ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #2941 from facebook/dev

Browse Source 
v1.5.1
This commit is contained in:
Yann Collet
2021-12-20 13:49:33 -08:00
committed by GitHub
parent a488ba114e 1219b7f3e3
commit f4a541b021
154 changed files with 14808 additions and 5804 deletions
Download Patch File Download Diff File Expand all files Collapse all files
.circleci/config.yml
+13 -32
View File
@@ -7,19 +7,21 @@ jobs:
# preinstalled to reduce installation time.
docker:
- image: fbopensource/zstd-circleci-primary:0.0.1
# TODO: Re-enable aarch64 build:
# make aarch64build && make clean
steps:
- checkout
- run:
name: Test
command: |
./tests/test-license.py
cc -v; CFLAGS="-O0 -Werror -pedantic" make all && make clean
make c99build ; make clean
make c11build ; make clean
make aarch64build ; make clean
cc -v
CFLAGS="-O0 -Werror -pedantic" make allmost; make clean
make c99build; make clean
make c11build; make clean
make -j regressiontest; make clean
make shortest ; make clean
make cxxtest ; make clean
make shortest; make clean
make cxxtest; make clean
# the second half of the jobs are in this test
short-tests-1:
docker:
@@ -84,31 +86,10 @@ workflows:
commit:
jobs:
# Run the tests in parallel
- short-tests-0:
filters:
tags:
only: /.*/
- short-tests-1:
filters:
tags:
only: /.*/
# Create a branch called regression and set it to dev to force a
# regression test run
- regression-test:
filters:
branches:
only:
- regression
# Only run on release tags.
- publish-github-release:
requires:
- short-tests-0
- short-tests-1
filters:
branches:
ignore: /.*/
tags:
only: /^v\d+\.\d+\.\d+$/
- short-tests-0
- short-tests-1
- regression-test
nightly:
triggers:
- schedule:
@@ -120,7 +101,7 @@ workflows:
- dev
- master
jobs:
# Run daily long regression tests
# Run daily regression tests
- regression-test
.github/workflows/dev-long-tests.yml
+240
View File
@@ -0,0 +1,240 @@
name: dev-long-tests
# Tests longer than 10mn
concurrency:
group: long-${{ github.ref }}
cancel-in-progress: true
on:
pull_request:
branches: [ dev, release, actionsTest ]
jobs:
make-all:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make all
run: make all
# lasts ~24mn
make-test:
runs-on: ubuntu-latest
env:
DEVNULLRIGHTS: 1
READFROMBLOCKDEVICE: 1
steps:
- uses: actions/checkout@v2
- name: make test
run: make test
# lasts ~26mn
make-test-osx:
runs-on: macos-latest
steps:
- uses: actions/checkout@v2
- name: OS-X test
run: make test # make -c lib all doesn't work because of the fact that it's not a tty
no-intrinsics-fuzztest:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: no intrinsics fuzztest
run: MOREFLAGS="-DZSTD_NO_INTRINSICS" make -C tests fuzztest
tsan-zstreamtest:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: thread sanitizer zstreamtest
run: CC=clang ZSTREAM_TESTTIME=-T3mn make tsan-test-zstream
# lasts ~15mn
tsan-fuzztest:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: thread sanitizer fuzztest
run: CC=clang make tsan-fuzztest
# lasts ~23mn
gcc-8-asan-ubsan-testzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-8 + ASan + UBSan + Test Zstd
run: |
sudo apt-get -qqq update
make gcc8install
CC=gcc-8 make -j uasan-test-zstd </dev/null V=1
gcc-asan-ubsan-testzstd-32bit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + Test Zstd, 32bit mode
run: |
make libc6install
make -j uasan-test-zstd32 V=1
# Note : external libraries must be turned off when using MSAN tests,
# because they are not msan-instrumented,
# so any data coming from these libraries is always considered "uninitialized"
gcc-8-asan-ubsan-fuzz:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-8 + ASan + UBSan + Fuzz Test
run: |
make gcc8install
CC=gcc-8 FUZZER_FLAGS="--long-tests" make clean uasan-fuzztest
gcc-asan-ubsan-fuzz32:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + Fuzz Test 32bit
run: |
make libc6install
CFLAGS="-O3 -m32" FUZZER_FLAGS="--long-tests" make uasan-fuzztest
asan-ubsan-regression:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + Regression Test
run: make -j uasanregressiontest
msan-regression:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: MSan + Regression Test
run: make -j msanregressiontest
clang-msan-fuzz:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: clang + MSan + Fuzz Test
run: |
sudo apt-get -qqq update
sudo apt-get install clang
CC=clang FUZZER_FLAGS="--long-tests" make clean msan-fuzztest
# lasts ~24mn
clang-msan-testzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: clang + MSan + Test Zstd
run: |
sudo apt-get update
sudo apt-get install clang
CC=clang make msan-test-zstd HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=0 V=1
armfuzz:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Qemu ARM emulation + Fuzz Test
run: |
sudo apt-get -qqq update
make arminstall
make armfuzz
valgrind-fuzz-test:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: valgrind + fuzz test stack mode # ~ 7mn
shell: 'script -q -e -c "bash {0}"'
run: |
make valgrindinstall
make -C tests valgrindTest
make clean
make -C tests test-fuzzer-stackmode
mingw-long-test:
runs-on: windows-latest
strategy:
fail-fast: false
matrix:
include: [
{ compiler: clang, platform: x64, action: build, script: "MOREFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion -Wno-unused-command-line-argument -Wno-implicit-int-float-conversion' make -j allzstd V=1"},
{ compiler: gcc, platform: x64, action: test, script: ""},
]
steps:
- uses: actions/checkout@v2
- name: Mingw long test
run: |
$env:PATH_ORIGINAL = $env:PATH
$env:PATH_MINGW32 = "C:\msys64\mingw32\bin"
$env:PATH_MINGW64 = "C:\msys64\mingw64\bin"
COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw32\bin\make.exe
COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw64\bin\make.exe
IF ("${{matrix.platform}}" -eq "x64")
{
$env:PATH = $env:PATH_MINGW64 + ";" + $env:PATH_ORIGINAL
}
ELSEIF ("${{matrix.platform}}" -eq "x86")
{
$env:PATH = $env:PATH_MINGW32 + ";" + $env:PATH_ORIGINAL
}
IF ("${{matrix.action}}" -eq "build")
{
make -v
sh -c "${{matrix.compiler}} -v"
ECHO "Building zlib to static link"
$env:CC = "${{matrix.compiler}}"
sh -c "cd .. && git clone --depth 1 --branch v1.2.11 https://github.com/madler/zlib"
sh -c "cd ../zlib && make -f win32/Makefile.gcc libz.a"
ECHO "Building zstd"
$env:CPPFLAGS = "-I../../zlib"
$env:LDFLAGS = "../../zlib/libz.a"
sh -c "${{matrix.script}}"
}
ELSEIF ("${{matrix.action}}" -eq "test")
{
ECHO "Testing ${{matrix.compiler}} ${{matrix.platform}}"
$env:CC = "gcc"
$env:CXX = "g++"
MKDIR build\cmake\build
CD build\cmake\build
$env:FUZZERTEST = "-T2mn"
$env:ZSTREAM_TESTTIME = "-T2mn"
cmake -G "Visual Studio 14 2015 Win64" ..
cd ..\..\..
make clean
}
# lasts ~20mn
oss-fuzz:
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
sanitizer: [address, undefined, memory]
steps:
- name: Build Fuzzers (${{ matrix.sanitizer }})
id: build
uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
with:
oss-fuzz-project-name: 'zstd'
dry-run: false
sanitizer: ${{ matrix.sanitizer }}
- name: Run Fuzzers (${{ matrix.sanitizer }})
uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
with:
oss-fuzz-project-name: 'zstd'
fuzz-seconds: 600
dry-run: false
sanitizer: ${{ matrix.sanitizer }}
- name: Upload Crash
uses: actions/upload-artifact@v1
if: failure() && steps.build.outcome == 'success'
with:
name: ${{ matrix.sanitizer }}-artifacts
path: ./out/artifacts
.github/workflows/dev-short-tests.yml
+427
View File
@@ -0,0 +1,427 @@
name: dev-short-tests
# Faster tests: mostly build tests, along with some other
# misc tests
concurrency:
group: fast-${{ github.ref }}
cancel-in-progress: true
on:
pull_request:
branches: [ dev, release, actionsTest ]
jobs:
linux-kernel:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: linux kernel, library + build + test
run: make -C contrib/linux-kernel test CFLAGS="-Werror -Wunused-const-variable -Wunused-but-set-variable"
benchmarking:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make benchmarking
run: make benchmarking
check-32bit: # designed to catch https://github.com/facebook/zstd/issues/2428
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make check on 32-bit
run: |
sudo apt update
APT_PACKAGES="gcc-multilib" make apt-install
CFLAGS="-m32 -O1 -fstack-protector" make check V=1
check-x32:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make check on x32 ABI # https://en.wikipedia.org/wiki/X32_ABI
env:
CHECK_CONSTRAINED_MEM: true
run: |
sudo apt update
APT_PACKAGES="gcc-multilib" make apt-install
CFLAGS="-mx32 -O1 -fstack-protector" make check V=1
gcc-7-libzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-7 + libzstdmt compilation
run: |
sudo apt-get -qqq update
make gcc7install
CC=gcc-7 CFLAGS=-Werror make -j all
make clean
LDFLAGS=-Wl,--no-undefined make -C lib libzstd-mt
# candidate test (to check) : underlink test
# LDFLAGS=-Wl,--no-undefined : will make the linker fail if dll is underlinked
cmake-build-and-test-check:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: cmake build and test check
run: |
FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
cp -r ./ "../zstd source"
cd "../zstd source"
FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
cpp-gnu90-c99-compatibility:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: C++, gnu90 and c99 compatibility
run: |
make cxxtest
make clean
make gnu90build
make clean
make c99build
make clean
make travis-install # just ensures `make install` works
mingw-cross-compilation:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: mingw cross-compilation
run: |
# sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix; (doesn't work)
sudo apt-get -qqq update
sudo apt-get install gcc-mingw-w64
CC=x86_64-w64-mingw32-gcc CXX=x86_64-w64-mingw32-g++ CFLAGS="-Werror -O1" make zstd
armbuild:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ARM Build Test
run: |
sudo apt-get -qqq update
make arminstall
make armbuild
bourne-shell:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Bourne shell compatibility (shellcheck)
run: |
wget https://github.com/koalaman/shellcheck/releases/download/v0.7.1/shellcheck-v0.7.1.linux.x86_64.tar.xz
tar -xf shellcheck-v0.7.1.linux.x86_64.tar.xz
shellcheck-v0.7.1/shellcheck --shell=sh --severity=warning --exclude=SC2010 tests/playTests.sh
zlib-wrapper:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: zlib wrapper test
run: |
sudo apt-get -qqq update
make valgrindinstall
make -C zlibWrapper test
make -C zlibWrapper valgrindTest
lz4-threadpool-libs:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: LZ4, thread pool, and libs build testslib wrapper test
run: |
make lz4install
make -C tests test-lz4
make check < /dev/null | tee # mess with lz4 console detection
make clean
make -C tests test-pool
make clean
bash tests/libzstd_builds.sh
gcc-make-tests-32bit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Make all, 32bit mode
run: |
sudo apt-get -qqq update
make libc6install
CFLAGS="-Werror -m32" make -j all32
gcc-8-make:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-8 build
run: |
sudo apt-get -qqq update
make gcc8install
CC=gcc-8 CFLAGS="-Werror" make -j all
implicit-fall-through:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: -Wimplicit-fallthrough build
run: |
make clean
CC=gcc MOREFLAGS="-Werror -Wimplicit-fallthrough=2 -O0" make -C lib -j libzstd.a ZSTD_LEGACY_SUPPORT=0
make clean
CC=clang MOREFLAGS="-Werror -Wimplicit-fallthrough -O0" make -C lib -j libzstd.a ZSTD_LEGACY_SUPPORT=0
cmake-visual-2019:
runs-on: windows-latest
strategy:
matrix:
include:
- generator: "Visual Studio 16 2019"
flags: "-A x64"
- generator: "Visual Studio 16 2019"
flags: "-A Win32"
- generator: "MinGW Makefiles"
steps:
- uses: actions/checkout@v2
- name: Add MSBuild to PATH
uses: microsoft/setup-msbuild@v1.0.2
- name: Build
working-directory: ${{env.GITHUB_WORKSPACE}}
run: |
cd build\cmake
mkdir build
cd build
cmake.exe -G "${{matrix.generator}}" ${{matrix.flags}} ..
cmake.exe --build .
visual-2019:
runs-on: windows-latest
strategy:
matrix:
platform: [x64, Win32]
configuration: [Debug, Release]
steps:
- uses: actions/checkout@v2
- name: Add MSBuild to PATH
uses: microsoft/setup-msbuild@v1.0.2
- name: Build
working-directory: ${{env.GITHUB_WORKSPACE}}
# See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
run: >
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v142
/t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}}
visual-2015:
# only GH actions windows-2016 contains VS 2015
runs-on: windows-2016
strategy:
matrix:
platform: [x64, Win32]
configuration: [Debug, Release]
steps:
- uses: actions/checkout@v2
- name: Add MSBuild to PATH
uses: microsoft/setup-msbuild@v1.0.2
- name: Build
working-directory: ${{env.GITHUB_WORKSPACE}}
run: >
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140
/t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}}
minimal-decompressor-macros:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: minimal decompressor macros
run: |
make clean && make -j all ZSTD_LIB_MINIFY=1 MOREFLAGS="-Werror"
make clean && make check ZSTD_LIB_MINIFY=1 MOREFLAGS="-Werror"
make clean && make -j all MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X1 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT"
make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X1 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT"
make clean && make -j all MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
make clean && make -j all MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
make clean && make check MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
dynamic-bmi2:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: dynamic bmi2 tests
run: |
make clean && make -j check MOREFLAGS="-O0 -Werror -mbmi2"
make clean && make -j check MOREFLAGS="-O0 -Werror -DDYNAMIC_BMI2=1"
make clean && make -j check MOREFLAGS="-O0 -Werror -DDYNAMIC_BMI2=1 -mbmi2"
make clean && make -j check MOREFLAGS="-O0 -Werror -DDYNAMIC_BMI2=0"
make clean && make -j check MOREFLAGS="-O0 -Werror -DDYNAMIC_BMI2=0 -mbmi2"
test-variants:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make all variants & validate
run: |
make -j -C programs allVariants MOREFLAGS=-O0
./tests/test-variants.sh
qemu-consistency:
name: QEMU ${{ matrix.name }}
runs-on: ubuntu-latest
strategy:
fail-fast: false # 'false' means Don't stop matrix workflows even if some matrix failed.
matrix:
include: [
{ name: ARM, xcc_pkg: gcc-arm-linux-gnueabi, xcc: arm-linux-gnueabi-gcc, xemu_pkg: qemu-system-arm, xemu: qemu-arm-static },
{ name: ARM64, xcc_pkg: gcc-aarch64-linux-gnu, xcc: aarch64-linux-gnu-gcc, xemu_pkg: qemu-system-arm, xemu: qemu-aarch64-static },
{ name: PPC, xcc_pkg: gcc-powerpc-linux-gnu, xcc: powerpc-linux-gnu-gcc, xemu_pkg: qemu-system-ppc, xemu: qemu-ppc-static },
{ name: PPC64LE, xcc_pkg: gcc-powerpc64le-linux-gnu, xcc: powerpc64le-linux-gnu-gcc, xemu_pkg: qemu-system-ppc, xemu: qemu-ppc64le-static },
{ name: S390X, xcc_pkg: gcc-s390x-linux-gnu, xcc: s390x-linux-gnu-gcc, xemu_pkg: qemu-system-s390x, xemu: qemu-s390x-static },
{ name: MIPS, xcc_pkg: gcc-mips-linux-gnu, xcc: mips-linux-gnu-gcc, xemu_pkg: qemu-system-mips, xemu: qemu-mips-static },
{ name: M68K, xcc_pkg: gcc-m68k-linux-gnu, xcc: m68k-linux-gnu-gcc, xemu_pkg: qemu-system-m68k, xemu: qemu-m68k-static },
]
env: # Set environment variables
XCC: ${{ matrix.xcc }}
XEMU: ${{ matrix.xemu }}
steps:
- uses: actions/checkout@v2 # https://github.com/actions/checkout
- name: apt update & install
run: |
sudo apt-get update
sudo apt-get install gcc-multilib g++-multilib qemu-utils qemu-user-static
sudo apt-get install ${{ matrix.xcc_pkg }} ${{ matrix.xemu_pkg }}
- name: Environment info
run: |
echo && which $XCC
echo && $XCC --version
echo && $XCC -v # Show built-in specs
echo && which $XEMU
echo && $XEMU --version
- name: ARM
if: ${{ matrix.name == 'ARM' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: ARM64
if: ${{ matrix.name == 'ARM64' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: PPC
if: ${{ matrix.name == 'PPC' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: PPC64LE
if: ${{ matrix.name == 'PPC64LE' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: S390X
if: ${{ matrix.name == 'S390X' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: MIPS
if: ${{ matrix.name == 'MIPS' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
- name: M68K
if: ${{ matrix.name == 'M68K' }}
run: |
LDFLAGS="-static" CC=$XCC QEMU_SYS=$XEMU make clean check
mingw-short-test:
runs-on: windows-latest
strategy:
fail-fast: false
matrix:
include: [
{ compiler: gcc, platform: x64, script: "CFLAGS=-Werror make -j allzstd DEBUGLEVEL=2"},
{ compiler: gcc, platform: x86, script: "CFLAGS=-Werror make -j allzstd"},
{ compiler: clang, platform: x64, script: "CFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion' make -j allzstd V=1"},
]
steps:
- uses: actions/checkout@v2
- name: Mingw short test
run: |
ECHO "Building ${{matrix.compiler}} ${{matrix.platform}}"
$env:PATH_ORIGINAL = $env:PATH
$env:PATH_MINGW32 = "C:\msys64\mingw32\bin"
$env:PATH_MINGW64 = "C:\msys64\mingw64\bin"
COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw32\bin\make.exe
COPY C:\msys64\usr\bin\make.exe C:\msys64\mingw64\bin\make.exe
IF ("${{matrix.platform}}" -eq "x64")
{
$env:PATH = $env:PATH_MINGW64 + ";" + $env:PATH_ORIGINAL
}
ELSEIF ("${{matrix.platform}}" -eq "x86")
{
$env:PATH = $env:PATH_MINGW32 + ";" + $env:PATH_ORIGINAL
}
make -v
sh -c "${{matrix.compiler}} -v"
$env:CC = "${{matrix.compiler}}"
sh -c "${{matrix.script}}"
ECHO "Testing ${{matrix.compiler}} ${{matrix.platform}}"
make clean
make check
visual-runtime-tests:
runs-on: windows-latest
strategy:
matrix:
platform: [x64, Win32]
configuration: [Release]
steps:
- uses: actions/checkout@v2
- name: Add MSBuild to PATH
uses: microsoft/setup-msbuild@v1.0.2
- name: Build and run tests
working-directory: ${{env.GITHUB_WORKSPACE}}
env:
ZSTD_BIN: ./zstd.exe
DATAGEN_BIN: ./datagen.exe
# See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
run: |
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v142 /t:Clean,Build /p:Platform=${{matrix.platform}} /p:Configuration=${{matrix.configuration}}
COPY build\VS2010\bin\${{matrix.platform}}_${{matrix.configuration}}\*.exe tests\
CD tests
sh -e playTests.sh
DIR
.\fuzzer.exe -T2m
# This test currently fails on Github Actions specifically.
# Possible reason : TTY emulation.
# Note that the same test works fine locally and on travisCI.
# This will have to be fixed before transferring the test to GA.
# versions-compatibility:
# runs-on: ubuntu-latest
# steps:
# - uses: actions/checkout@v2
# - name: Versions Compatibility Test
# run: |
# make -C tests versionsTest
# For reference : icc tests
# icc tests are currently failing on Github Actions, likely to issues during installation stage
# To be fixed later
#
# icc:
# name: icc-check
# runs-on: ubuntu-latest
# steps:
# - name: install icc
# run: |
# export DEBIAN_FRONTEND=noninteractive
# sudo apt-get -qqq update
# sudo apt-get install -y wget build-essential pkg-config cmake ca-certificates gnupg
# sudo wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
# sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
# sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
# sudo apt-get update
# sudo apt-get install -y intel-basekit intel-hpckit
# - uses: actions/checkout@v2
# - name: make check
# run: |
# make CC=/opt/intel/oneapi/compiler/latest/linux/bin/intel64/icc check
.github/workflows/generic-dev.yml
-225
View File
@@ -1,225 +0,0 @@
name: generic-dev
on:
pull_request:
branches: [ dev, release, actionsTest ]
jobs:
# Dev PR jobs that still have to be migrated from travis
#
# versionTag (only on release tags)
# valgrindTest (keeps failing for some reason. need investigation)
# staticAnalyze (need trusty so need self-hosted)
# pcc-fuzz: (need trusty so need self-hosted)
# min-decomp-macros (flakey)
#
# setting up self-hosted is pretty straightforward, but
# I need admins permissions to the repo for that it looks like
# So I'm tabling that for now
#
# The release branch exclusive jobs will be in a separate
# workflow file (the osx tests and meson build that is)
benchmarking:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make benchmarking
run: make benchmarking
test:
runs-on: ubuntu-latest
env:
DEVNULLRIGHTS: 1
READFROMBLOCKDEVICE: 1
steps:
- uses: actions/checkout@v2
- name: make test
run: make test
check-32bit: # designed to catch https://github.com/facebook/zstd/issues/2428
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: make check on 32-bit
run: |
sudo apt update
APT_PACKAGES="gcc-multilib" make apt-install
CFLAGS="-m32 -O1 -fstack-protector" make check V=1
gcc-7-libzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-7 + libzstdmt compilation
run: |
make gcc7install
CC=gcc-7 CFLAGS=-Werror make -j all
make clean
LDFLAGS=-Wl,--no-undefined make -C lib libzstd-mt
# candidate test (to check) : underlink test
# LDFLAGS=-Wl,--no-undefined : will make the linker fail if dll is underlinked
gcc-8-asan-ubsan-testzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-8 + ASan + UBSan + Test Zstd
run: |
make gcc8install
CC=gcc-8 CFLAGS="-Werror" make -j all
make clean
CC=gcc-8 make -j uasan-test-zstd </dev/null V=1
gcc-asan-ubsan-testzstd-32bit:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + Test Zstd, 32bit mode
run: |
make libc6install
CFLAGS="-Werror -m32" make -j all32
make clean
make -j uasan-test-zstd32 V=1
clang-msan-testzstd:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: clang + MSan + Test Zstd
run: |
sudo apt-get update
sudo apt-get install clang
CC=clang make msan-test-zstd HAVE_ZLIB=0 HAVE_LZ4=0 HAVE_LZMA=0 V=1
# Note : external libraries must be turned off when using MSAN tests,
# because they are not msan-instrumented,
# so any data coming from these libraries is always considered "uninitialized"
cmake-build-and-test-check:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: cmake build and test check
run: |
FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
cp -r ./ "../zstd source"
cd "../zstd source"
FUZZERTEST=-T1mn ZSTREAM_TESTTIME=-T1mn make cmakebuild
gcc-8-asan-ubsan-fuzz:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: gcc-8 + ASan + UBSan + Fuzz Test
run: |
make gcc8install
CC=gcc-8 FUZZER_FLAGS="--long-tests" make clean uasan-fuzztest
gcc-asan-ubsan-fuzz32:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + Fuzz Test 32bit
run: |
make libc6install
CFLAGS="-O2 -m32" FUZZER_FLAGS="--long-tests" make uasan-fuzztest
clang-msan-fuzz:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: clang + MSan + Fuzz Test
run: |
sudo apt-get update
sudo apt-get install clang
CC=clang FUZZER_FLAGS="--long-tests" make clean msan-fuzztest
asan-ubsan-msan-regression:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: ASan + UBSan + MSan + Regression Test
run: |
make -j uasanregressiontest
make clean
make -j msanregressiontest
cpp-gnu90-c99-compatibility:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: C++, gnu90 and c99 compatibility
run: |
make cxxtest
make clean
make gnu90build
make clean
make c99build
make clean
make travis-install # just ensures `make install` works
mingw-cross-compilation:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: mingw cross-compilation
run: |
# sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix; (doesn't work)
sudo apt-get install gcc-mingw-w64
CC=x86_64-w64-mingw32-gcc CXX=x86_64-w64-mingw32-g++ CFLAGS="-Werror -O1" make zstd
# TODO: Broken test - fix and uncomment
# armbuild:
# runs-on: ubuntu-16.04 # doesn't work on latest
# steps:
# - uses: actions/checkout@v2
# - name: ARM Build Test
# run: |
# make arminstall
# make armbuild
# TODO: Broken test - fix and uncomment
# armfuzz:
# runs-on: ubuntu-16.04 # doesn't work on latest
# steps:
# - uses: actions/checkout@v2
# - name: Qemu ARM emulation + Fuzz Test
# run: |
# make arminstall
# make armfuzz
bourne-shell:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Bourne shell compatibility (shellcheck)
run: |
wget https://github.com/koalaman/shellcheck/releases/download/v0.7.1/shellcheck-v0.7.1.linux.x86_64.tar.xz
tar -xf shellcheck-v0.7.1.linux.x86_64.tar.xz
shellcheck-v0.7.1/shellcheck --shell=sh --severity=warning --exclude=SC2010 tests/playTests.sh
# For reference : icc tests
# icc tests are currently failing on Github Actions, likely to issues during installation stage
# To be fixed later
#
# icc:
# name: icc-check
# runs-on: ubuntu-latest
# steps:
# - name: install icc
# run: |
# export DEBIAN_FRONTEND=noninteractive
# sudo apt-get -qqq update
# sudo apt-get install -y wget build-essential pkg-config cmake ca-certificates gnupg
# sudo wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
# sudo apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
# sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
# sudo apt-get update
# sudo apt-get install -y intel-basekit intel-hpckit
# - uses: actions/checkout@v2
# - name: make check
# run: |
# make CC=/opt/intel/oneapi/compiler/latest/linux/bin/intel64/icc check
.github/workflows/generic-release.yml
-59
View File
@@ -1,59 +0,0 @@
name: generic-release
on:
pull_request:
# This will eventually only be for pushes to release
# but for dogfooding purposes, I'm running it even
# on dev pushes
branches: [ dev, release, actionsTest ]
jobs:
# missing jobs
#
# ppc64le + fuzz test
# Qemu PPC64 + Fuzz test
# Qemu aarch64 + Fuzz Test (on Xenial)
# versions comp
# meson test
osx:
runs-on: macos-10.15
steps:
- uses: actions/checkout@v2
- name: OS-X
run: |
make test
# make -c lib all (need to fix. not working right now)
tsan:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: thread sanitizer
run: |
CC=clang make tsan-test-zstream
CC=clang make tsan-fuzztest
zlib-wrapper:
runs-on: ubuntu-16.04
steps:
- uses: actions/checkout@v2
- name: zlib wrapper test
run: |
make valgrindinstall
make -C zlibWrapper test
make -C zlibWrapper valgrindTest
lz4-threadpool-partial-libs:
runs-on: ubuntu-16.04
steps:
- uses: actions/checkout@v2
- name: LZ4, thread pool, and partial libs testslib wrapper test
run: |
make lz4install
make -C tests test-lz4
make check < /dev/null | tee # mess with lz4 console detection
make clean
make -C tests test-pool
make clean
bash tests/libzstd_partial_builds.sh
.github/workflows/linux-kernel.yml
-13
View File
@@ -1,13 +0,0 @@
name: linux-kernel
on:
pull_request:
branches: [ dev, release, actionsTest ]
jobs:
test:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Create linux kernel library + build + test
run: make -C contrib/linux-kernel test CFLAGS="-Werror -Wunused-const-variable -Wunused-but-set-variable"
.github/workflows/main.yml
-30
View File
@@ -1,30 +0,0 @@
name: CIFuzz
on: [pull_request]
jobs:
Fuzzing:
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
sanitizer: [address, undefined]
steps:
- name: Build Fuzzers (${{ matrix.sanitizer }})
id: build
uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
with:
oss-fuzz-project-name: 'zstd'
dry-run: false
sanitizer: ${{ matrix.sanitizer }}
- name: Run Fuzzers (${{ matrix.sanitizer }})
uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
with:
oss-fuzz-project-name: 'zstd'
fuzz-seconds: 600
dry-run: false
sanitizer: ${{ matrix.sanitizer }}
- name: Upload Crash
uses: actions/upload-artifact@v1
if: failure() && steps.build.outcome == 'success'
with:
name: ${{ matrix.sanitizer }}-artifacts
path: ./out/artifacts
.gitignore
+1
View File
@@ -29,6 +29,7 @@ dictionary
NUL
# Build artefacts
contrib/linux-kernel/linux/
projects/
bin/
.buckd/
.travis.yml
+38 -70
View File
@@ -1,5 +1,6 @@
# Medium Tests: Run on all commits/PRs to dev branch
# Travis CI is used to test platforms that github-actions currently doesn't support
# without either self-hosting or some finnicky work-around. Also, some tests
# are troublesome to migrate since GH Actions runs tests not in a tty.
language: c
git:
@@ -18,47 +19,48 @@ addons:
env:
global:
- FUZZERTEST=-T2mn
ZSTREAM_TESTTIME=-T2mn
- FUZZERTEST=-T1mn
ZSTREAM_TESTTIME=-T1mn
DECODECORPUS_TESTTIME=-T1mn
matrix:
fast_finish: true
include:
- name: S390X (big endian) + Fuzz test
dist: trusty
arch: s390x
script:
- FUZZER_FLAGS=--no-big-tests make -C tests fuzztest
- name: S390X (big endian) + Fuzz test + no intrinsics
dist: trusty
arch: s390x
script:
- MOREFLAGS="-DZSTD_NO_INTRINSICS" FUZZER_FLAGS=--no-big-tests make -C tests fuzztest
- name: arm64 # ~2.5 mn
os: linux
arch: arm64
script:
- make check
- name: Minimal Decompressor Macros # ~5mn
- name: arm64fuzz
os: linux
arch: arm64
script:
- make clean && make -j all ZSTD_LIB_MINIFY=1 MOREFLAGS="-Werror"
- make clean && make check ZSTD_LIB_MINIFY=1 MOREFLAGS="-Werror"
- make clean && make -j all MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X1 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT"
- make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X1 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT"
- make clean && make -j all MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
- make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
- make clean && make -j all MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
- make clean && make check MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
- make -C tests fuzztest
- name: static analyzer scanbuild # ~26mn
# TODO: migrate to GH Actions once newest clang staticanalyze warnings are fixed
- name: static analyzer scanbuild # ~8mn
dist: trusty # note : it's important to pin down a version of static analyzer, since different versions report different false positives
script:
- make staticAnalyze
- name: Valgrind + Fuzz Test Stack Mode # ~ 7mn
# GH actions can't run this command on OS-X, non-tty issues
- name: OS-X make all lib
os: osx
script:
- make valgrindinstall
- make -C tests clean valgrindTest
- make clean
- make -C tests test-fuzzer-stackmode
- name: Qemu ARM emulation + Fuzz Test # ~13.5mn
script:
- make arminstall
- make armfuzz
- make -C lib all
# Introduced to check compat with old toolchains, to prevent e.g. #1872
- name: ARM Build Test (on Trusty)
@@ -67,64 +69,30 @@ matrix:
- make arminstall
- make armbuild
- name: Qemu PPC + Fuzz Test # ~13mn
dist: trusty # it seems ppc cross-compilation fails on "current"
script:
- make ppcinstall
- make ppcfuzz
# check release number (release only)
# check release number (release/new tag only)
- name: Tag-Specific Test
if: tag =~ ^v[0-9]\.[0-9]
script:
- make -C tests checkTag
- tests/checkTag "$TRAVIS_BRANCH"
# tests for release branch and cron job only
- name: OS-X # ~13mn
if: branch = release
os: osx
- name: PPC64LE + Fuzz test # ~13mn
arch: ppc64le
env:
- FUZZER_FLAGS=--no-big-tests
- MOREFLAGS="-static"
script:
- make test
- make -C lib all
- cat /proc/cpuinfo
- make -C tests fuzztest
- name: Versions Compatibility Test # 11.5mn
if: branch = release
# This test currently fails on GA specifically, for no obvious reason
# (it works fine on travisCI, and on local test platforms).
- name: Versions Compatibility Test # ~6mn
script:
- make -C tests versionsTest
- name: thread sanitizer # ~29mn
if: branch = release
script:
- make clang38install
- CC=clang-3.8 make tsan-test-zstream
- CC=clang-3.8 make tsan-fuzztest
- name: PPC64LE + Fuzz test # ~13mn
if: branch = release
arch: ppc64le
script:
- cat /proc/cpuinfo
- make test
- name: Qemu PPC64 + Fuzz test # ~13mn, presumed Big-Endian (?)
dist: trusty # note : PPC64 cross-compilation for Qemu tests seems broken on Xenial
if: branch = release
script:
- make ppcinstall
- make ppc64fuzz
# note : we already have aarch64 tests on hardware
- name: Qemu aarch64 + Fuzz Test (on Xenial) # ~14mn
if: branch = release
dist: xenial
script:
- make arminstall
- make aarch64fuzz
# meson dedicated test
- name: Xenial (Meson + clang) # ~15mn
if: branch = release
dist: bionic
language: cpp
compiler: clang
CHANGELOG
+18
View File
@@ -1,3 +1,21 @@
v1.5.1 (Dec, 2021)
perf: rebalanced compression levels, to better match the intended speed/level curve, by @senhuang42
perf: faster huffman decoder, using x64 assembly, by @terrelln
perf: slightly faster high speed modes (strategies fast & dfast), by @felixhandte
perf: improved binary size and faster compilation times, by @terrelln
perf: new row64 mode, used notably in level 12, by @senhuang42
perf: faster mid-level compression speed in presence of highly repetitive patterns, by @senhuang42
perf: minor compression ratio improvements for small data at high levels, by @cyan4973
perf: reduced stack usage (mostly useful for Linux Kernel), by @terrelln
perf: faster compression speed on incompressible data, by @bindhvo
perf: on-demand reduced ZSTD_DCtx state size, using build macro ZSTD_DECODER_INTERNAL_BUFFER, at a small cost of performance, by @bindhvo
build: allows hiding static symbols in the dynamic library, using build macro, by @skitt
build: support for m68k (Motorola 68000's), by @cyan4973
build: improved AIX support, by @Helflym
build: improved meson unofficial build, by @eli-schwartz
cli : custom memory limit when training dictionary (#2925), by @embg
cli : report advanced parameters information when compressing in very verbose mode (``-vv`), by @Svetlitski-FB
v1.5.0 (May 11, 2021)
api: Various functions promoted from experimental to stable API: (#2579-2581, @senhuang42)
`ZSTD_defaultCLevel()`
CONTRIBUTING.md
+12 -12
View File
@@ -47,7 +47,7 @@ Our contribution process works in three main stages:
* Topic and development:
* Make a new branch on your fork about the topic you're developing for
```
# branch names should be consise but sufficiently informative
# branch names should be concise but sufficiently informative
git checkout -b <branch-name>
git push origin <branch-name>
```
@@ -104,7 +104,7 @@ Our contribution process works in three main stages:
issue at hand, then please indicate this by requesting that an issue be closed by commenting.
* Just because your changes have been merged does not mean the topic or larger issue is complete. Remember
that the change must make it to an official zstd release for it to be meaningful. We recommend
that contributers track the activity on their pull request and corresponding issue(s) page(s) until
that contributors track the activity on their pull request and corresponding issue(s) page(s) until
their change makes it to the next release of zstd. Users will often discover bugs in your code or
suggest ways to refine and improve your initial changes even after the pull request is merged.
@@ -270,15 +270,15 @@ for level 1 compression on Zstd. Typically this means, you have identified a sec
code that you think can be made to run faster.
The first thing you will want to do is make sure that the piece of code is actually taking up
a notable amount of time to run. It is usually not worth optimzing something which accounts for less than
a notable amount of time to run. It is usually not worth optimizing something which accounts for less than
0.0001% of the total running time. Luckily, there are tools to help with this.
Profilers will let you see how much time your code spends inside a particular function.
If your target code snippit is only part of a function, it might be worth trying to
isolate that snippit by moving it to its own function (this is usually not necessary but
If your target code snippet is only part of a function, it might be worth trying to
isolate that snippet by moving it to its own function (this is usually not necessary but
might be).
Most profilers (including the profilers dicusssed below) will generate a call graph of
functions for you. Your goal will be to find your function of interest in this call grapch
Most profilers (including the profilers discussed below) will generate a call graph of
functions for you. Your goal will be to find your function of interest in this call graph
and then inspect the time spent inside of it. You might also want to to look at the
annotated assembly which most profilers will provide you with.
@@ -301,16 +301,16 @@ $ zstd -b1 -i5 <my-data> # this will run for 5 seconds
5. Once you run your benchmarking script, switch back over to instruments and attach your
process to the time profiler. You can do this by:
* Clicking on the `All Processes` drop down in the top left of the toolbar.
* Selecting your process from the dropdown. In my case, it is just going to be labled
* Selecting your process from the dropdown. In my case, it is just going to be labeled
`zstd`
* Hitting the bright red record circle button on the top left of the toolbar
6. You profiler will now start collecting metrics from your bencharking script. Once
6. You profiler will now start collecting metrics from your benchmarking script. Once
you think you have collected enough samples (usually this is the case after 3 seconds of
recording), stop your profiler.
7. Make sure that in toolbar of the bottom window, `profile` is selected.
8. You should be able to see your call graph.
* If you don't see the call graph or an incomplete call graph, make sure you have compiled
zstd and your benchmarking scripg using debug flags. On mac and linux, this just means
zstd and your benchmarking script using debug flags. On mac and linux, this just means
you will have to supply the `-g` flag alone with your build script. You might also
have to provide the `-fno-omit-frame-pointer` flag
9. Dig down the graph to find your function call and then inspect it by double clicking
@@ -329,7 +329,7 @@ Some general notes on perf:
counter statistics. Perf uses a high resolution timer and this is likely one
of the first things your team will run when assessing your PR.
* Perf has a long list of hardware counters that can be viewed with `perf --list`.
When measuring optimizations, something worth trying is to make sure the handware
When measuring optimizations, something worth trying is to make sure the hardware
counters you expect to be impacted by your change are in fact being so. For example,
if you expect the L1 cache misses to decrease with your change, you can look at the
counter `L1-dcache-load-misses`
@@ -368,7 +368,7 @@ Follow these steps to link travis-ci with your github fork of zstd
TODO
### appveyor
Follow these steps to link circle-ci with your girhub fork of zstd
Follow these steps to link circle-ci with your github fork of zstd
1. Make sure you are logged into your github account
2. Go to https://www.appveyor.com/
Makefile
+29 -10
View File
@@ -29,6 +29,7 @@ VOID = /dev/null
# fail on other tested distros (ubuntu, debian) even
# without manually specifying the TARGET_SYSTEM.
TARGET_SYSTEM ?= $(OS)
CP ?= cp
ifneq (,$(filter Windows%,$(TARGET_SYSTEM)))
EXT =.exe
@@ -69,7 +70,7 @@ zstd zstd-release:
.PHONY: zstdmt
zstdmt:
$(Q)$(MAKE) -C $(PRGDIR) $@
$(Q)cp $(PRGDIR)/zstd$(EXT) ./zstdmt$(EXT)
$(Q)$(CP) $(PRGDIR)/zstd$(EXT) ./zstdmt$(EXT)
.PHONY: zlibwrapper
zlibwrapper: lib
@@ -148,10 +149,12 @@ clean:
#------------------------------------------------------------------------------
# make install is validated only for Linux, macOS, Hurd and some BSD targets
#------------------------------------------------------------------------------
ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD DragonFly NetBSD MSYS_NT Haiku))
ifneq (,$(filter $(shell uname),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD DragonFly NetBSD MSYS_NT Haiku AIX))
HOST_OS = POSIX
MKDIR ?= mkdir -p
HAVE_COLORNEVER = $(shell echo a | egrep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
EGREP_OPTIONS ?=
ifeq ($HAVE_COLORNEVER, 1)
@@ -217,7 +220,7 @@ armbuild: clean
CC=arm-linux-gnueabi-gcc CFLAGS="-Werror" $(MAKE) allzstd
aarch64build: clean
CC=aarch64-linux-gnu-gcc CFLAGS="-Werror" $(MAKE) allzstd
CC=aarch64-linux-gnu-gcc CFLAGS="-Werror -O0" $(MAKE) allzstd
ppcbuild: clean
CC=powerpc-linux-gnu-gcc CFLAGS="-m32 -Wno-attributes -Werror" $(MAKE) -j allzstd
@@ -284,6 +287,22 @@ uasanregressiontest:
msanregressiontest:
$(MAKE) -C $(FUZZDIR) regressiontest CC=clang CXX=clang++ CFLAGS="-O3 -fsanitize=memory" CXXFLAGS="-O3 -fsanitize=memory"
update_regressionResults : REGRESS_RESULTS_DIR := /tmp/regress_results_dir/
update_regressionResults:
$(MAKE) -C programs zstd
$(MAKE) -C tests/regression test
$(RM) -rf $(REGRESS_RESULTS_DIR)
$(MKDIR) $(REGRESS_RESULTS_DIR)
./tests/regression/test \
--cache tests/regression/cache \
--output $(REGRESS_RESULTS_DIR)/results.csv \
--zstd programs/zstd
echo "Showing results differences"
! diff tests/regression/results.csv $(REGRESS_RESULTS_DIR)/results.csv
echo "Updating results.csv"
$(CP) $(REGRESS_RESULTS_DIR)/results.csv tests/regression/results.csv
# run UBsan with -fsanitize-recover=pointer-overflow
# this only works with recent compilers such as gcc 8+
usan: clean
@@ -372,7 +391,7 @@ ifneq (,$(filter $(HOST_OS),MSYS POSIX))
cmakebuild:
cmake --version
$(RM) -r $(BUILDIR)/cmake/build
mkdir $(BUILDIR)/cmake/build
$(MKDIR) $(BUILDIR)/cmake/build
cd $(BUILDIR)/cmake/build; cmake -DCMAKE_INSTALL_PREFIX:PATH=~/install_test_dir $(CMAKE_PARAMS) ..
$(MAKE) -C $(BUILDIR)/cmake/build -j4;
$(MAKE) -C $(BUILDIR)/cmake/build install;
@@ -381,23 +400,23 @@ cmakebuild:
c89build: clean
$(CC) -v
CFLAGS="-std=c89 -Werror" $(MAKE) allmost # will fail, due to missing support for `long long`
CFLAGS="-std=c89 -Werror -O0" $(MAKE) allmost # will fail, due to missing support for `long long`
gnu90build: clean
$(CC) -v
CFLAGS="-std=gnu90 -Werror" $(MAKE) allmost
CFLAGS="-std=gnu90 -Werror -O0" $(MAKE) allmost
c99build: clean
$(CC) -v
CFLAGS="-std=c99 -Werror" $(MAKE) allmost
CFLAGS="-std=c99 -Werror -O0" $(MAKE) allmost
gnu99build: clean
$(CC) -v
CFLAGS="-std=gnu99 -Werror" $(MAKE) allmost
CFLAGS="-std=gnu99 -Werror -O0" $(MAKE) allmost
c11build: clean
$(CC) -v
CFLAGS="-std=c11 -Werror" $(MAKE) allmost
CFLAGS="-std=c11 -Werror -O0" $(MAKE) allmost
bmix64build: clean
$(CC) -v
@@ -416,5 +435,5 @@ bmi32build: clean
staticAnalyze: SCANBUILD ?= scan-build
staticAnalyze:
$(CC) -v
CC=$(CC) CPPFLAGS=-g $(SCANBUILD) --status-bugs -v $(MAKE) allzstd examples contrib
CC=$(CC) CPPFLAGS=-g $(SCANBUILD) --status-bugs -v $(MAKE) zstd
endif
Package.swift
+36
View File
@@ -0,0 +1,36 @@
// swift-tools-version:5.0
// The swift-tools-version declares the minimum version of Swift required to build this package.
import PackageDescription
let package = Package(
name: "zstd",
platforms: [
.macOS(.v10_10), .iOS(.v9), .tvOS(.v9)
],
products: [
// Products define the executables and libraries a package produces, and make them visible to other packages.
.library(
name: "libzstd",
targets: [ "libzstd" ])
],
dependencies: [
// Dependencies declare other packages that this package depends on.
// .package(url: /* package url */, from: "1.0.0"),
],
targets: [
// Targets are the basic building blocks of a package. A target can define a module or a test suite.
// Targets can depend on other targets in this package, and on products in packages this package depends on.
.target(
name: "libzstd",
path: "lib",
sources: [ "common", "compress", "decompress", "dictBuilder" ],
publicHeadersPath: "modulemap",
cSettings: [
.headerSearchPath(".")
])
],
swiftLanguageVersions: [.v5],
cLanguageStandard: .gnu11,
cxxLanguageStandard: .gnucxx14
)
README.md
+20 -20
View File
@@ -4,7 +4,8 @@ __Zstandard__, or `zstd` as short version, is a fast lossless compression algori
targeting real-time compression scenarios at zlib-level and better compression ratios.
It's backed by a very fast entropy stage, provided by [Huff0 and FSE library](https://github.com/Cyan4973/FiniteStateEntropy).
The project is provided as an open-source dual [BSD](LICENSE) and [GPLv2](COPYING) licensed **C** library,
Zstandard's format is stable and documented in [RFC8878](https://datatracker.ietf.org/doc/html/rfc8878). Multiple independent implementations are already available.
This repository represents the reference implementation, provided as an open-source dual [BSD](LICENSE) and [GPLv2](COPYING) licensed **C** library,
and a command line utility producing and decoding `.zst`, `.gz`, `.xz` and `.lz4` files.
Should your project require another programming language,
a list of known ports and bindings is provided on [Zstandard homepage](http://www.zstd.net/#other-languages).
@@ -17,8 +18,8 @@ a list of known ports and bindings is provided on [Zstandard homepage](http://ww
[![Build status][CirrusDevBadge]][CirrusLink]
[![Fuzzing Status][OSSFuzzBadge]][OSSFuzzLink]
[travisDevBadge]: https://travis-ci.org/facebook/zstd.svg?branch=dev "Continuous Integration test suite"
[travisLink]: https://travis-ci.org/facebook/zstd
[travisDevBadge]: https://api.travis-ci.com/facebook/zstd.svg?branch=dev "Continuous Integration test suite"
[travisLink]: https://travis-ci.com/facebook/zstd
[AppveyorDevBadge]: https://ci.appveyor.com/api/projects/status/xt38wbdxjk5mrbem/branch/dev?svg=true "Windows test suite"
[AppveyorLink]: https://ci.appveyor.com/project/YannCollet/zstd-p0yf0
[CircleDevBadge]: https://circleci.com/gh/facebook/zstd/tree/dev.svg?style=shield "Short test suite"
@@ -31,8 +32,8 @@ a list of known ports and bindings is provided on [Zstandard homepage](http://ww
## Benchmarks
For reference, several fast compression algorithms were tested and compared
on a server running Arch Linux (`Linux version 5.5.11-arch1-1`),
with a Core i9-9900K CPU @ 5.0GHz,
on a desktop running Ubuntu 20.04 (`Linux 5.11.0-41-generic`),
with a Core i7-9700K CPU @ 4.9GHz,
using [lzbench], an open-source in-memory benchmark by @inikep
compiled with [gcc] 9.3.0,
on the [Silesia compression corpus].
@@ -43,25 +44,24 @@ on the [Silesia compression corpus].
| Compressor name | Ratio | Compression| Decompress.|
| --------------- | ------| -----------| ---------- |
| **zstd 1.4.5 -1** | 2.884 | 500 MB/s | 1660 MB/s |
| zlib 1.2.11 -1 | 2.743 | 90 MB/s | 400 MB/s |
| brotli 1.0.7 -0 | 2.703 | 400 MB/s | 450 MB/s |
| **zstd 1.4.5 --fast=1** | 2.434 | 570 MB/s | 2200 MB/s |
| **zstd 1.4.5 --fast=3** | 2.312 | 640 MB/s | 2300 MB/s |
| quicklz 1.5.0 -1 | 2.238 | 560 MB/s | 710 MB/s |
| **zstd 1.4.5 --fast=5** | 2.178 | 700 MB/s | 2420 MB/s |
| lzo1x 2.10 -1 | 2.106 | 690 MB/s | 820 MB/s |
| lz4 1.9.2 | 2.101 | 740 MB/s | 4530 MB/s |
| **zstd 1.4.5 --fast=7** | 2.096 | 750 MB/s | 2480 MB/s |
| lzf 3.6 -1 | 2.077 | 410 MB/s | 860 MB/s |
| snappy 1.1.8 | 2.073 | 560 MB/s | 1790 MB/s |
| **zstd 1.5.1 -1** | 2.887 | 530 MB/s | 1700 MB/s |
| [zlib] 1.2.11 -1 | 2.743 | 95 MB/s | 400 MB/s |
| brotli 1.0.9 -0 | 2.702 | 395 MB/s | 450 MB/s |
| **zstd 1.5.1 --fast=1** | 2.437 | 600 MB/s | 2150 MB/s |
| **zstd 1.5.1 --fast=3** | 2.239 | 670 MB/s | 2250 MB/s |
| quicklz 1.5.0 -1 | 2.238 | 540 MB/s | 760 MB/s |
| **zstd 1.5.1 --fast=4** | 2.148 | 710 MB/s | 2300 MB/s |
| lzo1x 2.10 -1 | 2.106 | 660 MB/s | 845 MB/s |
| [lz4] 1.9.3 | 2.101 | 740 MB/s | 4500 MB/s |
| lzf 3.6 -1 | 2.077 | 410 MB/s | 830 MB/s |
| snappy 1.1.9 | 2.073 | 550 MB/s | 1750 MB/s |
[zlib]: http://www.zlib.net/
[LZ4]: http://www.lz4.org/
[lz4]: http://www.lz4.org/
The negative compression levels, specified with `--fast=#`,
offer faster compression and decompression speed in exchange for some loss in
compression ratio compared to level 1, as seen in the table above.
offer faster compression and decompression speed
at the cost of compression ratio (compared to level 1).
Zstd can also offer stronger compression ratios at the cost of compression speed.
Speed vs Compression trade-off is configurable by small increments.
appveyor.yml
+28 -150
View File
@@ -23,34 +23,6 @@
SCRIPT: "make allzstd MOREFLAGS=-static"
ARTIFACT: "true"
BUILD: "true"
- COMPILER: "clang"
HOST: "mingw"
PLATFORM: "x64"
SCRIPT: "MOREFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion' make -j allzstd V=1"
BUILD: "true"
- COMPILER: "gcc"
HOST: "mingw"
PLATFORM: "x64"
SCRIPT: ""
TEST: "cmake"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Release"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Release"
- COMPILER: "clang-cl"
HOST: "cmake-visual"
@@ -113,56 +85,6 @@
appveyor PushArtifact zstd-win-release-%PLATFORM%.zip
)
)
- if [%HOST%]==[visual] (
ECHO *** &&
ECHO *** Building Visual Studio 2008 %PLATFORM%\%CONFIGURATION% in %APPVEYOR_BUILD_FOLDER% &&
ECHO *** &&
msbuild "build\VS2008\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v90 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2008\bin\%PLATFORM%\%CONFIGURATION%\*.exe &&
MD5sum build/VS2008/bin/%PLATFORM%/%CONFIGURATION%/*.exe &&
COPY build\VS2008\bin\%PLATFORM%\%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2008_%PLATFORM%_%CONFIGURATION%.exe &&
ECHO *** &&
ECHO *** Building Visual Studio 2010 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" %ADDITIONALPARAM% /m /verbosity:minimal /property:PlatformToolset=v100 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
msbuild "build\VS2010\zstd.sln" %ADDITIONALPARAM% /m /verbosity:minimal /property:PlatformToolset=v100 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2010_%PLATFORM%_%CONFIGURATION%.exe &&
ECHO *** &&
ECHO *** Building Visual Studio 2012 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2012_%PLATFORM%_%CONFIGURATION%.exe &&
ECHO *** &&
ECHO *** Building Visual Studio 2013 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v120 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v120 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2013_%PLATFORM%_%CONFIGURATION%.exe &&
ECHO *** &&
ECHO *** Building Visual Studio 2015 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2015_%PLATFORM%_%CONFIGURATION%.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe tests\
)
- if [%HOST%]==[cmake-visual] (
ECHO *** &&
ECHO *** Building %CMAKE_GENERATOR% ^(%CMAKE_GENERATOR_TOOLSET%^) %PLATFORM%\%CONFIGURATION% &&
@@ -186,18 +108,6 @@
cd ..\..\.. &&
make clean
)
- SET "FUZZERTEST=-T30s"
- if [%HOST%]==[visual] if [%CONFIGURATION%]==[Release] (
CD tests &&
SET ZSTD_BIN=./zstd.exe&&
SET DATAGEN_BIN=./datagen.exe&&
sh -e playTests.sh --test-large-data &&
fullbench.exe -i1 &&
fullbench.exe -i1 -P0 &&
fuzzer_VS2012_%PLATFORM%_Release.exe %FUZZERTEST% &&
fuzzer_VS2013_%PLATFORM%_Release.exe %FUZZERTEST% &&
fuzzer_VS2015_%PLATFORM%_Release.exe %FUZZERTEST%
)
# The following tests are for regular pushes
@@ -208,38 +118,26 @@
version: 1.0.{build}
environment:
matrix:
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Release"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Release"
- COMPILER: "gcc"
HOST: "cygwin"
PLATFORM: "x64"
- COMPILER: "gcc"
HOST: "mingw"
PLATFORM: "x64"
SCRIPT: "CFLAGS=-Werror make -j allzstd DEBUGLEVEL=2"
- COMPILER: "gcc"
HOST: "mingw"
PLATFORM: "x86"
SCRIPT: "CFLAGS=-Werror make -j allzstd"
- COMPILER: "clang"
HOST: "mingw"
PLATFORM: "x64"
SCRIPT: "CFLAGS='--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion' make -j allzstd V=1"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Debug"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "x64"
CONFIGURATION: "Release"
- COMPILER: "visual"
HOST: "visual"
PLATFORM: "Win32"
CONFIGURATION: "Release"
- COMPILER: "clang-cl"
HOST: "cmake-visual"
@@ -260,12 +158,6 @@
cmake,^
make
)
- if [%HOST%]==[mingw] (
SET "PATH_MINGW32=C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin" &&
SET "PATH_MINGW64=C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin" &&
COPY C:\msys64\usr\bin\make.exe C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin\make.exe &&
COPY C:\msys64\usr\bin\make.exe C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin\make.exe
)
- IF [%HOST%]==[visual] IF [%PLATFORM%]==[x64] (
SET ADDITIONALPARAM=/p:LibraryPath="C:\Program Files\Microsoft SDKs\Windows\v7.1\lib\x64;c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;C:\Program Files (x86)\Microsoft Visual Studio 10.0\;C:\Program Files (x86)\Microsoft Visual Studio 10.0\lib\amd64;"
)
@@ -283,30 +175,6 @@
ctest -V -L Medium;
"
)
- if [%HOST%]==[mingw] (
( if [%PLATFORM%]==[x64] (
SET "PATH=%PATH_MINGW64%;%PATH_ORIGINAL%"
) else if [%PLATFORM%]==[x86] (
SET "PATH=%PATH_MINGW32%;%PATH_ORIGINAL%"
) ) &&
make -v &&
sh -c "%COMPILER% -v" &&
set "CC=%COMPILER%" &&
sh -c "%SCRIPT%"
)
- if [%HOST%]==[visual] (
ECHO *** &&
ECHO *** Building Visual Studio 2015 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v140 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
MD5sum build/VS2010/bin/%PLATFORM%_%CONFIGURATION%/*.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\fuzzer.exe tests\fuzzer_VS2015_%PLATFORM%_%CONFIGURATION%.exe &&
COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe tests\
)
- if [%HOST%]==[cmake-visual] (
ECHO *** &&
ECHO *** Building %CMAKE_GENERATOR% ^(%CMAKE_GENERATOR_TOOLSET%^) %PLATFORM%\%CONFIGURATION% &&
@@ -316,12 +184,22 @@
POPD &&
ECHO ***
)
- if [%HOST%]==[visual] (
ECHO *** &&
ECHO *** Building Visual Studio 2012 %PLATFORM%\%CONFIGURATION% &&
ECHO *** &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /p:ForceImportBeforeCppTargets=%APPVEYOR_BUILD_FOLDER%\build\VS2010\CompileAsCpp.props /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe &&
msbuild "build\VS2010\zstd.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
DIR build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe
)
test_script:
- ECHO Testing %COMPILER% %PLATFORM% %CONFIGURATION%
- SET "FUZZERTEST=-T10s"
- if [%HOST%]==[mingw] (
set "CC=%COMPILER%" &&
make clean &&
make check
)
)
build/VS_scripts/build.generic.cmd
+12 -2
View File
@@ -19,10 +19,10 @@ GOTO build
:display_help
echo Syntax: build.generic.cmd msbuild_version msbuild_platform msbuild_configuration msbuild_toolset
echo msbuild_version: VS installed version (VS2012, VS2013, VS2015, VS2017, ...)
echo msbuild_version: VS installed version (VS2012, VS2013, VS2015, VS2017, VS2019, ...)
echo msbuild_platform: Platform (x64 or Win32)
echo msbuild_configuration: VS configuration (Release or Debug)
echo msbuild_toolset: Platform Toolset (v100, v110, v120, v140, v141)
echo msbuild_toolset: Platform Toolset (v100, v110, v120, v140, v141, v142, ...)
EXIT /B 1
@@ -43,6 +43,16 @@ IF %msbuild_version% == VS2017 (
IF EXIST %msbuild_vs2017enterprise% SET msbuild=%msbuild_vs2017enterprise%
)
:: VS2019
SET msbuild_vs2019community="%programfiles(x86)%\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe"
SET msbuild_vs2019professional="%programfiles(x86)%\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\MSBuild.exe"
SET msbuild_vs2019enterprise="%programfiles(x86)%\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe"
IF %msbuild_version% == VS2019 (
IF EXIST %msbuild_vs2019community% SET msbuild=%msbuild_vs2019community%
IF EXIST %msbuild_vs2019professional% SET msbuild=%msbuild_vs2019professional%
IF EXIST %msbuild_vs2019enterprise% SET msbuild=%msbuild_vs2019enterprise%
)
SET project="%~p0\..\VS2010\zstd.sln"
SET msbuild_params=/verbosity:minimal /nologo /t:Clean,Build /p:Platform=%msbuild_platform% /p:Configuration=%msbuild_configuration%
build/cmake/CMakeLists.txt
+7 -1
View File
@@ -92,8 +92,14 @@ else ()
add_definitions(-DZSTD_LEGACY_SUPPORT=0)
endif ()
if (ANDROID)
set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT OFF)
else()
set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT ON)
endif()
# Multi-threading support
option(ZSTD_MULTITHREAD_SUPPORT "MULTITHREADING SUPPORT" ON)
option(ZSTD_MULTITHREAD_SUPPORT "MULTITHREADING SUPPORT" ${ZSTD_MULTITHREAD_SUPPORT_DEFAULT})
if (ZSTD_MULTITHREAD_SUPPORT)
message(STATUS "ZSTD_MULTITHREAD_SUPPORT is enabled")
build/cmake/contrib/pzstd/CMakeLists.txt
+7 -1
View File
@@ -21,10 +21,16 @@ add_executable(pzstd ${PROGRAMS_DIR}/util.c ${PZSTD_DIR}/main.cpp ${PZSTD_DIR}/O
set_property(TARGET pzstd APPEND PROPERTY COMPILE_DEFINITIONS "NDEBUG")
set_property(TARGET pzstd APPEND PROPERTY COMPILE_OPTIONS "-Wno-shadow")
if (ZSTD_BUILD_SHARED)
set(ZSTD_LIB libzstd_shared)
else()
set(ZSTD_LIB libzstd_static)
endif()
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
if (CMAKE_USE_PTHREADS_INIT)
target_link_libraries(pzstd libzstd_shared ${CMAKE_THREAD_LIBS_INIT})
target_link_libraries(pzstd ${ZSTD_LIB} ${CMAKE_THREAD_LIBS_INIT})
else()
message(SEND_ERROR "ZSTD currently does not support thread libraries other than pthreads")
endif()
build/cmake/lib/CMakeLists.txt
+4 -3
View File
@@ -7,7 +7,7 @@
# in the COPYING file in the root directory of this source tree).
# ################################################################
project(libzstd C)
project(libzstd C ASM)
set(CMAKE_INCLUDE_CURRENT_DIR TRUE)
option(ZSTD_BUILD_STATIC "BUILD STATIC LIBRARIES" ON)
@@ -22,7 +22,7 @@ include_directories(${LIBRARY_DIR} ${LIBRARY_DIR}/common)
file(GLOB CommonSources ${LIBRARY_DIR}/common/*.c)
file(GLOB CompressSources ${LIBRARY_DIR}/compress/*.c)
file(GLOB DecompressSources ${LIBRARY_DIR}/decompress/*.c)
file(GLOB DecompressSources ${LIBRARY_DIR}/decompress/*.c ${LIBRARY_DIR}/decompress/*.S)
file(GLOB DictBuilderSources ${LIBRARY_DIR}/dictBuilder/*.c)
set(Sources
@@ -106,7 +106,7 @@ if (MSVC)
endif ()
# With MSVC static library needs to be renamed to avoid conflict with import library
if (MSVC)
if (MSVC OR (WIN32 AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang"))
set(STATIC_LIBRARY_BASE_NAME zstd_static)
else ()
set(STATIC_LIBRARY_BASE_NAME zstd)
@@ -168,6 +168,7 @@ install(TARGETS ${library_targets}
ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
BUNDLE DESTINATION "${CMAKE_INSTALL_BINDIR}"
)
# uninstall target
build/cmake/programs/CMakeLists.txt
+3 -1
View File
@@ -37,7 +37,9 @@ target_link_libraries(zstd ${PROGRAMS_ZSTD_LINK_TARGET})
if (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
target_link_libraries(zstd rt)
endif ()
install(TARGETS zstd RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
install(TARGETS zstd
RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
BUNDLE DESTINATION "${CMAKE_INSTALL_BINDIR}")
if (UNIX)
add_custom_target(zstdcat ALL ${CMAKE_COMMAND} -E create_symlink zstd zstdcat DEPENDS zstd COMMENT "Creating zstdcat symlink")
build/meson/contrib/pzstd/meson.build
+1 -1
View File
@@ -18,7 +18,7 @@ pzstd_sources = [join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'contrib/pzstd/SkippableFrame.cpp')]
pzstd = executable('pzstd',
pzstd_sources,
cpp_args: [ '-DNDEBUG', '-Wno-shadow', '-pedantic', '-Wno-deprecated-declarations' ],
cpp_args: [ '-DNDEBUG', '-Wno-shadow', '-Wno-deprecated-declarations' ],
include_directories: pzstd_includes,
dependencies: [ libzstd_dep, thread_dep ],
install: true)
build/meson/lib/meson.build
+2
View File
@@ -37,6 +37,7 @@ libzstd_sources = [join_paths(zstd_rootdir, 'lib/common/entropy_common.c'),
join_paths(zstd_rootdir, 'lib/compress/zstd_opt.c'),
join_paths(zstd_rootdir, 'lib/compress/zstd_ldm.c'),
join_paths(zstd_rootdir, 'lib/decompress/huf_decompress.c'),
join_paths(zstd_rootdir, 'lib/decompress/huf_decompress_amd64.S'),
join_paths(zstd_rootdir, 'lib/decompress/zstd_decompress.c'),
join_paths(zstd_rootdir, 'lib/decompress/zstd_decompress_block.c'),
join_paths(zstd_rootdir, 'lib/decompress/zstd_ddict.c'),
@@ -108,6 +109,7 @@ libzstd = library('zstd',
libzstd_sources,
include_directories: libzstd_includes,
c_args: libzstd_c_args,
gnu_symbol_visibility: 'hidden',
dependencies: libzstd_deps,
install: true,
version: zstd_libversion)
build/meson/meson.build
+7 -5
View File
@@ -14,10 +14,14 @@ project('zstd',
default_options : [
'c_std=gnu99',
'cpp_std=c++11',
'buildtype=release'
'buildtype=release',
'warning_level=3',
# -Wdocumentation does not actually pass, nor do the test binaries,
# so this isn't safe
#'werror=true'
],
version: 'DUMMY',
meson_version: '>=0.47.0')
meson_version: '>=0.48.0')
cc = meson.get_compiler('c')
cxx = meson.get_compiler('cpp')
@@ -106,10 +110,8 @@ use_lz4 = lz4_dep.found()
add_project_arguments('-DXXH_NAMESPACE=ZSTD_', language: ['c'])
if [compiler_gcc, compiler_clang].contains(cc_id)
common_warning_flags = [ '-Wextra', '-Wundef', '-Wshadow', '-Wcast-align', '-Wcast-qual' ]
common_warning_flags = [ '-Wundef', '-Wshadow', '-Wcast-align', '-Wcast-qual' ]
if cc_id == compiler_clang
# Should use Meson's own --werror build option
#common_warning_flags += '-Werror'
common_warning_flags += ['-Wconversion', '-Wno-sign-conversion', '-Wdocumentation']
endif
cc_compile_flags = cc.get_supported_arguments(common_warning_flags + ['-Wstrict-prototypes'])
build/meson/meson_options.txt
+1 -1
View File
@@ -10,7 +10,7 @@
# Read guidelines from https://wiki.gnome.org/Initiatives/GnomeGoals/MesonPorting
option('legacy_level', type: 'integer', min: 0, max: 7, value: '5',
option('legacy_level', type: 'integer', min: 0, max: 7, value: 5,
description: 'Support any legacy format: 7 to 1 for v0.7+ to v0.1+')
option('debug_level', type: 'integer', min: 0, max: 9, value: 1,
description: 'Enable run-time debug. See lib/common/debug.h')
build/meson/programs/meson.build
+3 -1
View File
@@ -18,7 +18,9 @@ zstd_programs_sources = [join_paths(zstd_rootdir, 'programs/zstdcli.c'),
join_paths(zstd_rootdir, 'programs/benchzstd.c'),
join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/dibio.c'),
join_paths(zstd_rootdir, 'programs/zstdcli_trace.c')]
join_paths(zstd_rootdir, 'programs/zstdcli_trace.c'),
# needed due to use of private symbol + -fvisibility=hidden
join_paths(zstd_rootdir, 'lib/common/xxhash.c')]
zstd_c_args = libzstd_debug_cflags
if use_multi_thread
build/meson/tests/meson.build
+30 -40
View File
@@ -29,64 +29,62 @@ ZSTDRTTEST = ['--test-large-data']
test_includes = [ include_directories(join_paths(zstd_rootdir, 'programs')) ]
datagen_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'tests/datagencli.c')]
testcommon_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'programs/benchfn.c'),
join_paths(zstd_rootdir, 'programs/benchzstd.c')]
testcommon = static_library('testcommon',
testcommon_sources,
# needed due to use of private symbol + -fvisibility=hidden
objects: libzstd.extract_all_objects(recursive: false))
testcommon_dep = declare_dependency(link_with: testcommon,
dependencies: libzstd_deps,
include_directories: libzstd_includes)
datagen_sources = [join_paths(zstd_rootdir, 'tests/datagencli.c')]
datagen = executable('datagen',
datagen_sources,
c_args: [ '-DNDEBUG' ],
include_directories: test_includes,
dependencies: libzstd_dep,
dependencies: testcommon_dep,
install: false)
fullbench_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'programs/benchfn.c'),
join_paths(zstd_rootdir, 'programs/benchzstd.c'),
join_paths(zstd_rootdir, 'tests/fullbench.c')]
fullbench_sources = [join_paths(zstd_rootdir, 'tests/fullbench.c')]
fullbench = executable('fullbench',
fullbench_sources,
include_directories: test_includes,
dependencies: libzstd_dep,
dependencies: testcommon_dep,
install: false)
fuzzer_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'tests/fuzzer.c')]
fuzzer_sources = [join_paths(zstd_rootdir, 'tests/fuzzer.c')]
fuzzer = executable('fuzzer',
fuzzer_sources,
include_directories: test_includes,
dependencies: [ libzstd_dep, thread_dep ],
dependencies: [ testcommon_dep, thread_dep ],
install: false)
zstreamtest_sources = [join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'tests/seqgen.c'),
zstreamtest_sources = [join_paths(zstd_rootdir, 'tests/seqgen.c'),
join_paths(zstd_rootdir, 'tests/zstreamtest.c')]
zstreamtest = executable('zstreamtest',
zstreamtest_sources,
include_directories: test_includes,
dependencies: libzstd_dep,
dependencies: testcommon_dep,
install: false)
paramgrill_sources = [join_paths(zstd_rootdir, 'programs/benchfn.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'programs/benchzstd.c'),
join_paths(zstd_rootdir, 'programs/datagen.c'),
join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'tests/paramgrill.c')]
paramgrill_sources = [join_paths(zstd_rootdir, 'tests/paramgrill.c')]
paramgrill = executable('paramgrill',
paramgrill_sources,
include_directories: test_includes,
dependencies: [ libzstd_dep, libm_dep ],
dependencies: [ testcommon_dep, libm_dep ],
install: false)
roundTripCrash_sources = [join_paths(zstd_rootdir, 'tests/roundTripCrash.c')]
roundTripCrash = executable('roundTripCrash',
roundTripCrash_sources,
dependencies: [ libzstd_dep ],
dependencies: [ testcommon_dep ],
install: false)
longmatch_sources = [join_paths(zstd_rootdir, 'tests/longmatch.c')]
@@ -111,18 +109,14 @@ if 0 < legacy_level and legacy_level <= 4
install: false)
endif
decodecorpus_sources = [join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'tests/decodecorpus.c')]
decodecorpus_sources = [join_paths(zstd_rootdir, 'tests/decodecorpus.c')]
decodecorpus = executable('decodecorpus',
decodecorpus_sources,
include_directories: test_includes,
dependencies: [ libzstd_dep, libm_dep ],
dependencies: [ testcommon_dep, libm_dep ],
install: false)
poolTests_sources = [join_paths(zstd_rootdir, 'programs/util.c'),
join_paths(zstd_rootdir, 'programs/timefn.c'),
join_paths(zstd_rootdir, 'tests/poolTests.c'),
poolTests_sources = [join_paths(zstd_rootdir, 'tests/poolTests.c'),
join_paths(zstd_rootdir, 'lib/common/pool.c'),
join_paths(zstd_rootdir, 'lib/common/threading.c'),
join_paths(zstd_rootdir, 'lib/common/zstd_common.c'),
@@ -130,7 +124,7 @@ poolTests_sources = [join_paths(zstd_rootdir, 'programs/util.c'),
poolTests = executable('poolTests',
poolTests_sources,
include_directories: test_includes,
dependencies: [ libzstd_dep, thread_dep ],
dependencies: [ testcommon_dep, thread_dep ],
install: false)
checkTag_sources = [join_paths(zstd_rootdir, 'tests/checkTag.c')]
@@ -186,10 +180,6 @@ test('test-zstream-1',
zstreamtest,
args: ['-v', ZSTREAM_TESTTIME] + FUZZER_FLAGS,
timeout: 240)
test('test-zstream-2',
zstreamtest,
args: ['-mt', '-t1', ZSTREAM_TESTTIME] + FUZZER_FLAGS,
timeout: 120)
test('test-zstream-3',
zstreamtest,
args: ['--newapi', '-t1', ZSTREAM_TESTTIME] + FUZZER_FLAGS,
build/single_file_libs/zstd-in.c
+3 -1
View File
@@ -25,7 +25,7 @@
* Note: MEM_MODULE stops xxhash redefining BYTE, U16, etc., which are also
* defined in mem.h (breaking C99 compatibility).
*
* Note: the undefs for xxHash allow Zstd's implementation to coinside with with
* Note: the undefs for xxHash allow Zstd's implementation to coincide with with
* standalone xxHash usage (with global defines).
*
* Note: multithreading is enabled for all platforms apart from Emscripten.
@@ -43,6 +43,8 @@
#define ZSTD_MULTITHREAD
#endif
#define ZSTD_TRACE 0
/* TODO: Can't amalgamate ASM function */
#define ZSTD_DISABLE_ASM 1
/* Include zstd_deps.h first with all the options we need enabled. */
#define ZSTD_DEPS_NEED_MALLOC
build/single_file_libs/zstddeclib-in.c
+3 -1
View File
@@ -25,7 +25,7 @@
* Note: MEM_MODULE stops xxhash redefining BYTE, U16, etc., which are also
* defined in mem.h (breaking C99 compatibility).
*
* Note: the undefs for xxHash allow Zstd's implementation to coinside with with
* Note: the undefs for xxHash allow Zstd's implementation to coincide with with
* standalone xxHash usage (with global defines).
*/
#define DEBUGLEVEL 0
@@ -39,6 +39,8 @@
#define ZSTD_LEGACY_SUPPORT 0
#define ZSTD_STRIP_ERROR_STRINGS
#define ZSTD_TRACE 0
/* TODO: Can't amalgamate ASM function */
#define ZSTD_DISABLE_ASM 1
/* Include zstd_deps.h first with all the options we need enabled. */
#define ZSTD_DEPS_NEED_MALLOC
contrib/freestanding_lib/freestanding.py
+2 -2
View File
@@ -27,7 +27,6 @@ SKIPPED_FILES = [
"common/pool.h",
"common/threading.c",
"common/threading.h",
"common/zstd_trace.c",
"common/zstd_trace.h",
"compress/zstdmt_compress.h",
"compress/zstdmt_compress.c",
@@ -461,7 +460,8 @@ class Freestanding(object):
print(*args, **kwargs)
def _copy_file(self, lib_path):
if not (lib_path.endswith(".c") or lib_path.endswith(".h")):
suffixes = [".c", ".h", ".S"]
if not any((lib_path.endswith(suffix) for suffix in suffixes)):
return
if lib_path in SKIPPED_FILES:
self._log(f"\tSkipping file: {lib_path}")
contrib/linux-kernel/Makefile
+14 -4
View File
@@ -35,11 +35,12 @@ libzstd:
-DXXH_STATIC_LINKING_ONLY \
-DMEM_FORCE_MEMORY_ACCESS=0 \
-D__GNUC__ \
-D__linux__=1 \
-DSTATIC_BMI2=0 \
-DZSTD_ADDRESS_SANITIZER=0 \
-DZSTD_MEMORY_SANITIZER=0 \
-DZSTD_DATAFLOW_SANITIZER=0 \
-DZSTD_COMPRESS_HEAPMODE=1 \
-UZSTD_NO_INLINE \
-UNO_PREFETCH \
-U__cplusplus \
-UZSTD_DLL_EXPORT \
@@ -50,9 +51,11 @@ libzstd:
-U_WIN32 \
-RZSTDLIB_VISIBILITY= \
-RZSTDERRORLIB_VISIBILITY= \
-RZSTD_FALLTHROUGH=fallthrough \
-DZSTD_HAVE_WEAK_SYMBOLS=0 \
-DZSTD_TRACE=0 \
-DZSTD_NO_TRACE
-DZSTD_NO_TRACE \
-DZSTD_LINUX_KERNEL
mv linux/lib/zstd/zstd.h linux/include/linux/zstd_lib.h
mv linux/lib/zstd/zstd_errors.h linux/include/linux/
cp linux_zstd.h linux/include/linux/zstd.h
@@ -86,10 +89,17 @@ import-upstream:
rm $(LINUX)/lib/zstd/common/xxhash.*
rm $(LINUX)/lib/zstd/compress/zstdmt_*
DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef -Wpointer-arith \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls -Wmissing-prototypes -Wc++-compat \
-Wimplicit-fallthrough
.PHONY: test
test: libzstd
$(MAKE) -C test run-test CFLAGS="-O3 $(CFLAGS)" -j
$(MAKE) -C test run-test CFLAGS="-O3 $(CFLAGS) $(DEBUGFLAGS) -Werror" -j
.PHONY: clean
clean:
$(RM) -rf linux
$(RM) -rf linux test/test test/static_test
contrib/linux-kernel/decompress_sources.h
+7 -1
View File
@@ -1,4 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
@@ -16,6 +16,12 @@
* decompression.
*/
/*
* Disable the ASM Huffman implementation because we need to
* include all the sources.
*/
#define ZSTD_DISABLE_ASM 1
#include "common/debug.c"
#include "common/entropy_common.c"
#include "common/error_private.c"
contrib/linux-kernel/linux.mk
+3 -2
View File
@@ -1,4 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
# SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
# ################################################################
# Copyright (c) Facebook, Inc.
# All rights reserved.
@@ -11,7 +11,7 @@
obj-$(CONFIG_ZSTD_COMPRESS) += zstd_compress.o
obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd_decompress.o
ccflags-y += -O3
ccflags-y += -Wno-error=deprecated-declarations
zstd_compress-y := \
zstd_compress_module.o \
@@ -41,6 +41,7 @@ zstd_decompress-y := \
common/fse_decompress.o \
common/zstd_common.o \
decompress/huf_decompress.o \
decompress/huf_decompress_amd64.o \
decompress/zstd_ddict.o \
decompress/zstd_decompress.o \
decompress/zstd_decompress_block.o \
contrib/linux-kernel/linux_zstd.h
+1 -1
View File
@@ -1,4 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
/*
* Copyright (c) Yann Collet, Facebook, Inc.
* All rights reserved.
contrib/linux-kernel/mem.h
+3 -1
View File
@@ -1,4 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
/*
* Copyright (c) Yann Collet, Facebook, Inc.
* All rights reserved.
@@ -30,6 +30,8 @@
* Basic Types
*****************************************************************/
typedef uint8_t BYTE;
typedef uint8_t U8;
typedef int8_t S8;
typedef uint16_t U16;
typedef int16_t S16;
typedef uint32_t U32;
contrib/linux-kernel/test/Makefile
+6 -2
View File
@@ -18,9 +18,13 @@ CPPFLAGS += -DZSTD_ASAN_DONT_POISON_WORKSPACE
LINUX_ZSTD_MODULE := $(wildcard $(LINUX_ZSTDLIB)/*.c)
LINUX_ZSTD_COMMON := $(wildcard $(LINUX_ZSTDLIB)/common/*.c)
LINUX_ZSTD_COMPRESS := $(wildcard $(LINUX_ZSTDLIB)/compress/*.c)
LINUX_ZSTD_DECOMPRESS := $(wildcard $(LINUX_ZSTDLIB)/decompress/*.c)
LINUX_ZSTD_DECOMPRESS := $(wildcard $(LINUX_ZSTDLIB)/decompress/*.c $(LINUX_ZSTDLIB)/decompress/*.S)
LINUX_ZSTD_FILES := $(LINUX_ZSTD_MODULE) $(LINUX_ZSTD_COMMON) $(LINUX_ZSTD_COMPRESS) $(LINUX_ZSTD_DECOMPRESS)
LINUX_ZSTD_OBJECTS := $(LINUX_ZSTD_FILES:.c=.o)
LINUX_ZSTD_OBJECTS0 := $(LINUX_ZSTD_FILES:.c=.o)
LINUX_ZSTD_OBJECTS := $(LINUX_ZSTD_OBJECTS0:.S=.o)
%.o: %.S
$(CC) -c $(CPPFLAGS) $(CFLAGS) $^ -o $@
liblinuxzstd.a: $(LINUX_ZSTD_OBJECTS)
$(AR) $(ARFLAGS) $@ $^
contrib/linux-kernel/test/include/asm/unaligned.h
+1
View File
@@ -20,6 +20,7 @@ static unsigned _isLittleEndian(void)
{
const union { uint32_t u; uint8_t c[4]; } one = { 1 };
assert(_IS_LITTLE_ENDIAN == one.c[0]);
(void)one;
return _IS_LITTLE_ENDIAN;
}
contrib/linux-kernel/test/include/linux/compiler.h
+2
View File
@@ -18,4 +18,6 @@
#define noinline __attribute__((noinline))
#endif
#define fallthrough __attribute__((__fallthrough__))
#endif
contrib/linux-kernel/test/include/linux/xxhash.h
+4 -5
View File
@@ -124,11 +124,10 @@ XXH_API uint64_t xxh64(const void *input, size_t length, uint64_t seed);
static inline unsigned long xxhash(const void *input, size_t length,
uint64_t seed)
{
#if BITS_PER_LONG == 64
return xxh64(input, length, seed);
#else
return xxh32(input, length, seed);
#endif
if (sizeof(size_t) == 8)
return xxh64(input, length, seed);
else
return xxh32(input, length, seed);
}
/*-****************************
contrib/linux-kernel/test/macro-test.sh
+1 -1
View File
@@ -36,9 +36,9 @@ test_not_present "ZSTD_NO_INTRINSICS"
test_not_present "ZSTD_NO_UNUSED_FUNCTIONS"
test_not_present "ZSTD_LEGACY_SUPPORT"
test_not_present "STATIC_BMI2"
test_not_present "ZSTD_NO_INLINE"
test_not_present "ZSTD_DLL_EXPORT"
test_not_present "ZSTD_DLL_IMPORT"
test_not_present "__ICCARM__"
test_not_present "_MSC_VER"
test_not_present "_WIN32"
test_not_present "__linux__"
contrib/linux-kernel/test/static_test.c
+7 -5
View File
@@ -28,17 +28,19 @@ static const char kEmptyZstdFrame[] = {
0x28, 0xb5, 0x2f, 0xfd, 0x24, 0x00, 0x01, 0x00, 0x00, 0x99, 0xe9, 0xd8, 0x51
};
static void test_decompress_unzstd() {
static void test_decompress_unzstd(void) {
fprintf(stderr, "Testing decompress unzstd... ");
{
size_t const wkspSize = zstd_dctx_workspace_bound();
void* wksp = malloc(wkspSize);
CONTROL(wksp != NULL);
ZSTD_DCtx* dctx = zstd_init_dctx(wksp, wkspSize);
CONTROL(wksp != NULL);
CONTROL(dctx != NULL);
size_t const dSize = zstd_decompress_dctx(dctx, NULL, 0, kEmptyZstdFrame, sizeof(kEmptyZstdFrame));
CONTROL(!zstd_is_error(dSize));
CONTROL(dSize == 0);
{
size_t const dSize = zstd_decompress_dctx(dctx, NULL, 0, kEmptyZstdFrame, sizeof(kEmptyZstdFrame));
CONTROL(!zstd_is_error(dSize));
CONTROL(dSize == 0);
}
free(wksp);
}
fprintf(stderr, "Ok\n");
contrib/linux-kernel/test/test.c
+33 -27
View File
@@ -30,15 +30,15 @@ typedef struct {
size_t compSize;
} test_data_t;
test_data_t create_test_data(void) {
static test_data_t create_test_data(void) {
test_data_t data;
data.dataSize = 128 * 1024;
data.data = malloc(data.dataSize);
data.data = (char*)malloc(data.dataSize);
CONTROL(data.data != NULL);
data.data2 = malloc(data.dataSize);
data.data2 = (char*)malloc(data.dataSize);
CONTROL(data.data2 != NULL);
data.compSize = zstd_compress_bound(data.dataSize);
data.comp = malloc(data.compSize);
data.comp = (char*)malloc(data.compSize);
CONTROL(data.comp != NULL);
memset(data.data, 0, data.dataSize);
return data;
@@ -54,26 +54,27 @@ static void free_test_data(test_data_t const *data) {
#define MAX(a, b) ((a) > (b) ? (a) : (b))
static void test_btrfs(test_data_t const *data) {
fprintf(stderr, "testing btrfs use cases... ");
size_t const size = MIN(data->dataSize, 128 * 1024);
fprintf(stderr, "testing btrfs use cases... ");
for (int level = -1; level < 16; ++level) {
zstd_parameters params = zstd_get_params(level, size);
CONTROL(params.cParams.windowLog <= 17);
size_t const workspaceSize =
MAX(zstd_cstream_workspace_bound(&params.cParams),
zstd_dstream_workspace_bound(size));
void *workspace = malloc(workspaceSize);
CONTROL(workspace != NULL);
char const *ip = data->data;
char const *iend = ip + size;
char *op = data->comp;
char *oend = op + data->compSize;
CONTROL(params.cParams.windowLog <= 17);
CONTROL(workspace != NULL);
{
zstd_cstream *cctx = zstd_init_cstream(&params, size, workspace, workspaceSize);
CONTROL(cctx != NULL);
zstd_out_buffer out = {NULL, 0, 0};
zstd_in_buffer in = {NULL, 0, 0};
CONTROL(cctx != NULL);
for (;;) {
if (in.pos == in.size) {
in.src = ip;
@@ -108,9 +109,9 @@ static void test_btrfs(test_data_t const *data) {
oend = op + size;
{
zstd_dstream *dctx = zstd_init_dstream(1ULL << params.cParams.windowLog, workspace, workspaceSize);
CONTROL(dctx != NULL);
zstd_out_buffer out = {NULL, 0, 0};
zstd_in_buffer in = {NULL, 0, 0};
CONTROL(dctx != NULL);
for (;;) {
if (in.pos == in.size) {
in.src = ip;
@@ -125,15 +126,16 @@ static void test_btrfs(test_data_t const *data) {
out.pos = 0;
op += out.size;
}
size_t const ret = zstd_decompress_stream(dctx, &out, &in);
CONTROL(!zstd_is_error(ret));
if (ret == 0) {
break;
{
size_t const ret = zstd_decompress_stream(dctx, &out, &in);
CONTROL(!zstd_is_error(ret));
if (ret == 0) {
break;
}
}
}
}
CONTROL(op - data->data2 == data->dataSize);
CONTROL((size_t)(op - data->data2) == data->dataSize);
CONTROL(!memcmp(data->data, data->data2, data->dataSize));
free(workspace);
}
@@ -141,14 +143,14 @@ static void test_btrfs(test_data_t const *data) {
}
static void test_decompress_unzstd(test_data_t const *data) {
fprintf(stderr, "Testing decompress unzstd... ");
size_t cSize;
fprintf(stderr, "Testing decompress unzstd... ");
{
zstd_parameters params = zstd_get_params(19, 0);
size_t const wkspSize = zstd_cctx_workspace_bound(&params.cParams);
void* wksp = malloc(wkspSize);
CONTROL(wksp != NULL);
zstd_cctx* cctx = zstd_init_cctx(wksp, wkspSize);
CONTROL(wksp != NULL);
CONTROL(cctx != NULL);
cSize = zstd_compress_cctx(cctx, data->comp, data->compSize, data->data, data->dataSize, &params);
CONTROL(!zstd_is_error(cSize));
@@ -157,19 +159,21 @@ static void test_decompress_unzstd(test_data_t const *data) {
{
size_t const wkspSize = zstd_dctx_workspace_bound();
void* wksp = malloc(wkspSize);
CONTROL(wksp != NULL);
zstd_dctx* dctx = zstd_init_dctx(wksp, wkspSize);
CONTROL(wksp != NULL);
CONTROL(dctx != NULL);
size_t const dSize = zstd_decompress_dctx(dctx, data->data2, data->dataSize, data->comp, cSize);
CONTROL(!zstd_is_error(dSize));
CONTROL(dSize == data->dataSize);
{
size_t const dSize = zstd_decompress_dctx(dctx, data->data2, data->dataSize, data->comp, cSize);
CONTROL(!zstd_is_error(dSize));
CONTROL(dSize == data->dataSize);
}
CONTROL(!memcmp(data->data, data->data2, data->dataSize));
free(wksp);
}
fprintf(stderr, "Ok\n");
}
static void test_f2fs() {
static void test_f2fs(void) {
fprintf(stderr, "testing f2fs uses... ");
CONTROL(zstd_min_clevel() < 0);
CONTROL(zstd_max_clevel() == 22);
@@ -182,7 +186,7 @@ static void __attribute__((noinline)) use(void *x) {
asm volatile("" : "+r"(x));
}
static void __attribute__((noinline)) set_stack() {
static void __attribute__((noinline)) set_stack(void) {
char stack[8192];
g_stack = stack;
@@ -190,14 +194,16 @@ static void __attribute__((noinline)) set_stack() {
use(g_stack);
}
static void __attribute__((noinline)) check_stack() {
static void __attribute__((noinline)) check_stack(void) {
size_t cleanStack = 0;
while (cleanStack < 8192 && g_stack[cleanStack] == 0x33) {
++cleanStack;
}
size_t const stackSize = 8192 - cleanStack;
fprintf(stderr, "Maximum stack size: %zu\n", stackSize);
CONTROL(stackSize <= 2048 + 512);
{
size_t const stackSize = 8192 - cleanStack;
fprintf(stderr, "Maximum stack size: %zu\n", stackSize);
CONTROL(stackSize <= 2048 + 512);
}
}
static void test_stack_usage(test_data_t const *data) {
contrib/linux-kernel/zstd_compress_module.c
+41 -5
View File
@@ -1,4 +1,4 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
@@ -17,6 +17,43 @@
#include "common/zstd_deps.h"
#include "common/zstd_internal.h"
#define ZSTD_FORWARD_IF_ERR(ret) \
do { \
size_t const __ret = (ret); \
if (ZSTD_isError(__ret)) \
return __ret; \
} while (0)
static size_t zstd_cctx_init(zstd_cctx *cctx, const zstd_parameters *parameters,
unsigned long long pledged_src_size)
{
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_reset(
cctx, ZSTD_reset_session_and_parameters));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setPledgedSrcSize(
cctx, pledged_src_size));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_windowLog, parameters->cParams.windowLog));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_hashLog, parameters->cParams.hashLog));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_chainLog, parameters->cParams.chainLog));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_searchLog, parameters->cParams.searchLog));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_minMatch, parameters->cParams.minMatch));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_targetLength, parameters->cParams.targetLength));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_strategy, parameters->cParams.strategy));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_contentSizeFlag, parameters->fParams.contentSizeFlag));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_checksumFlag, parameters->fParams.checksumFlag));
ZSTD_FORWARD_IF_ERR(ZSTD_CCtx_setParameter(
cctx, ZSTD_c_dictIDFlag, !parameters->fParams.noDictIDFlag));
return 0;
}
int zstd_min_clevel(void)
{
return ZSTD_minCLevel();
@@ -59,7 +96,8 @@ EXPORT_SYMBOL(zstd_init_cctx);
size_t zstd_compress_cctx(zstd_cctx *cctx, void *dst, size_t dst_capacity,
const void *src, size_t src_size, const zstd_parameters *parameters)
{
return ZSTD_compress_advanced(cctx, dst, dst_capacity, src, src_size, NULL, 0, *parameters);
ZSTD_FORWARD_IF_ERR(zstd_cctx_init(cctx, parameters, src_size));
return ZSTD_compress2(cctx, dst, dst_capacity, src, src_size);
}
EXPORT_SYMBOL(zstd_compress_cctx);
@@ -73,7 +111,6 @@ zstd_cstream *zstd_init_cstream(const zstd_parameters *parameters,
unsigned long long pledged_src_size, void *workspace, size_t workspace_size)
{
zstd_cstream *cstream;
size_t ret;
if (workspace == NULL)
return NULL;
@@ -86,8 +123,7 @@ zstd_cstream *zstd_init_cstream(const zstd_parameters *parameters,
if (pledged_src_size == 0)
pledged_src_size = ZSTD_CONTENTSIZE_UNKNOWN;
ret = ZSTD_initCStream_advanced(cstream, NULL, 0, *parameters, pledged_src_size);
if (ZSTD_isError(ret))
if (ZSTD_isError(zstd_cctx_init(cstream, parameters, pledged_src_size)))
return NULL;
return cstream;
contrib/linux-kernel/zstd_decompress_module.c
+1 -1
View File
@@ -1,4 +1,4 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
contrib/linux-kernel/zstd_deps.h
+1 -1
View File
@@ -1,4 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
contrib/pzstd/Makefile
+2 -14
View File
@@ -57,19 +57,6 @@ LD_COMMAND = $(CXX) $^ $(ALL_LDFLAGS) $(LIBS) -pthread -o $@
CC_COMMAND = $(CC) $(DEPFLAGS) $(ALL_CFLAGS) -c $< -o $@
CXX_COMMAND = $(CXX) $(DEPFLAGS) $(ALL_CXXFLAGS) -c $< -o $@
# Get a list of all zstd files so we rebuild the static library when we need to
ZSTDCOMMON_FILES := $(wildcard $(ZSTDDIR)/common/*.c) \
$(wildcard $(ZSTDDIR)/common/*.h)
ZSTDCOMP_FILES := $(wildcard $(ZSTDDIR)/compress/*.c) \
$(wildcard $(ZSTDDIR)/compress/*.h)
ZSTDDECOMP_FILES := $(wildcard $(ZSTDDIR)/decompress/*.c) \
$(wildcard $(ZSTDDIR)/decompress/*.h)
ZSTDPROG_FILES := $(wildcard $(PROGDIR)/*.c) \
$(wildcard $(PROGDIR)/*.h)
ZSTD_FILES := $(wildcard $(ZSTDDIR)/*.h) \
$(ZSTDDECOMP_FILES) $(ZSTDCOMMON_FILES) $(ZSTDCOMP_FILES) \
$(ZSTDPROG_FILES)
# List all the pzstd source files so we can determine their dependencies
PZSTD_SRCS := $(wildcard *.cpp)
PZSTD_TESTS := $(wildcard test/*.cpp)
@@ -189,7 +176,8 @@ roundtrip: test/RoundTripTest$(EXT)
# Use the static library that zstd builds for simplicity and
# so we get the compiler options correct
$(ZSTDDIR)/libzstd.a: $(ZSTD_FILES)
.PHONY: $(ZSTDDIR)/libzstd.a
$(ZSTDDIR)/libzstd.a:
CFLAGS="$(ALL_CFLAGS)" LDFLAGS="$(ALL_LDFLAGS)" $(MAKE) -C $(ZSTDDIR) libzstd.a
# Rules to build the tests
contrib/pzstd/Options.cpp
+1 -1
View File
@@ -87,7 +87,7 @@ void usage() {
std::fprintf(stderr, " -V, --version : display version number and exit\n");
std::fprintf(stderr, " -v, --verbose : verbose mode; specify multiple times to increase log level (default:2)\n");
std::fprintf(stderr, " -q, --quiet : suppress warnings; specify twice to suppress errors too\n");
std::fprintf(stderr, " -c, --stdout : force write to standard output, even if it is the console\n");
std::fprintf(stderr, " -c, --stdout : write to standard output (even if it is the console)\n");
#ifdef UTIL_HAS_CREATEFILELIST
std::fprintf(stderr, " -r : operate recursively on directories\n");
#endif
contrib/pzstd/utils/Buffer.h
+1 -1
View File
@@ -45,7 +45,7 @@ class Buffer {
: buffer_(buffer), range_(data) {}
Buffer(Buffer&&) = default;
Buffer& operator=(Buffer&&) & = default;
Buffer& operator=(Buffer&&) = default;
/**
* Splits the data into two pieces: [begin, begin + n), [begin + n, end).
contrib/pzstd/utils/Range.h
+3 -3
View File
@@ -6,7 +6,7 @@
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
*/
/**
* A subset of `folly/Range.h`.
* All code copied verbatim modulo formatting
@@ -83,8 +83,8 @@ class Range {
Range(const Range&) = default;
Range(Range&&) = default;
Range& operator=(const Range&) & = default;
Range& operator=(Range&&) & = default;
Range& operator=(const Range&) = default;
Range& operator=(Range&&) = default;
constexpr size_type size() const {
return e_ - b_;
doc/educational_decoder/zstd_decompress.c
+1 -1
View File
@@ -2145,7 +2145,7 @@ static void FSE_init_dtable(FSE_dtable *const dtable,
// "All remaining symbols are sorted in their natural order. Starting from
// symbol 0 and table position 0, each symbol gets attributed as many cells
// as its probability. Cell allocation is spreaded, not linear."
// as its probability. Cell allocation is spread, not linear."
// Place the rest in the table
const u16 step = (size >> 1) + (size >> 3) + 3;
const u16 mask = size - 1;
doc/zstd_compression_format.md
+2 -2
View File
@@ -1124,7 +1124,7 @@ These symbols define a full state reset, reading `Accuracy_Log` bits.
Then, all remaining symbols, sorted in natural order, are allocated cells.
Starting from symbol `0` (if it exists), and table position `0`,
each symbol gets allocated as many cells as its probability.
Cell allocation is spreaded, not linear :
Cell allocation is spread, not linear :
each successor position follows this rule :
```
@@ -1669,7 +1669,7 @@ or at least provide a meaningful error code explaining for which reason it canno
Version changes
---------------
- 0.3.7 : clarifications for Repeat_Offsets
- 0.3.7 : clarifications for Repeat_Offsets, matching RFC8878
- 0.3.6 : clarifications for Dictionary_ID
- 0.3.5 : clarifications for Block_Maximum_Size
- 0.3.4 : clarifications for FSE decoding table
doc/zstd_manual.html
+47 -9
View File
@@ -1,10 +1,10 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>zstd 1.5.0 Manual</title>
<title>zstd 1.5.1 Manual</title>
</head>
<body>
<h1>zstd 1.5.0 Manual</h1>
<h1>zstd 1.5.1 Manual</h1>
<hr>
<a name="Contents"></a><h2>Contents</h2>
<ol>
@@ -357,7 +357,7 @@ size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx); </b>/* accept NULL pointer */<b>
* ZSTD_c_stableOutBuffer
* ZSTD_c_blockDelimiters
* ZSTD_c_validateSequences
* ZSTD_c_splitBlocks
* ZSTD_c_useBlockSplitter
* ZSTD_c_useRowMatchFinder
* Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
* note : never ever use experimentalParam? names directly;
@@ -803,7 +803,7 @@ size_t ZSTD_freeDStream(ZSTD_DStream* zds); </b>/* accept NULL pointer */<b>
<a name="Chapter13"></a><h2>Advanced dictionary and prefix API (Requires v1.4.0+)</h2><pre>
This API allows dictionaries to be used with ZSTD_compress2(),
ZSTD_compressStream2(), and ZSTD_decompress(). Dictionaries are sticky, and
ZSTD_compressStream2(), and ZSTD_decompressDCtx(). Dictionaries are sticky, and
only reset with the context is reset with ZSTD_reset_parameters or
ZSTD_reset_session_and_parameters. Prefixes are single-use.
<BR></pre>
@@ -1072,10 +1072,14 @@ size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
} ZSTD_literalCompressionMode_e;
</b></pre><BR>
<pre><b>typedef enum {
ZSTD_urm_auto = 0, </b>/* Automatically determine whether or not we use row matchfinder */<b>
ZSTD_urm_disableRowMatchFinder = 1, </b>/* Never use row matchfinder */<b>
ZSTD_urm_enableRowMatchFinder = 2 </b>/* Always use row matchfinder when applicable */<b>
} ZSTD_useRowMatchFinderMode_e;
</b>/* Note: This enum controls features which are conditionally beneficial. Zstd typically will make a final<b>
* decision on whether or not to enable the feature (ZSTD_ps_auto), but setting the switch to ZSTD_ps_enable
* or ZSTD_ps_disable allow for a force enable/disable the feature.
*/
ZSTD_ps_auto = 0, </b>/* Let the library automatically determine whether the feature shall be enabled */<b>
ZSTD_ps_enable = 1, </b>/* Force-enable the feature */<b>
ZSTD_ps_disable = 2 </b>/* Do not use the feature */<b>
} ZSTD_paramSwitch_e;
</b></pre><BR>
<a name="Chapter15"></a><h2>Frame size functions</h2><pre></pre>
@@ -1205,6 +1209,25 @@ size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
</p></pre><BR>
<pre><b>size_t ZSTD_readSkippableFrame(void* dst, size_t dstCapacity, unsigned* magicVariant,
const void* src, size_t srcSize);
</b><p> Retrieves a zstd skippable frame containing data given by src, and writes it to dst buffer.
The parameter magicVariant will receive the magicVariant that was supplied when the frame was written,
i.e. magicNumber - ZSTD_MAGIC_SKIPPABLE_START. This can be NULL if the caller is not interested
in the magicVariant.
Returns an error if destination buffer is not large enough, or if the frame is not skippable.
@return : number of bytes written or a ZSTD error.
</p></pre><BR>
<pre><b>unsigned ZSTD_isSkippableFrame(const void* buffer, size_t size);
</b><p> Tells if the content of `buffer` starts with a valid Frame Identifier for a skippable frame.
</p></pre><BR>
<a name="Chapter16"></a><h2>Memory management</h2><pre></pre>
<pre><b>size_t ZSTD_estimateCCtxSize(int compressionLevel);
@@ -1303,6 +1326,21 @@ ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL }; </b>/**< this con
</p></pre><BR>
<pre><b>typedef struct POOL_ctx_s ZSTD_threadPool;
ZSTD_threadPool* ZSTD_createThreadPool(size_t numThreads);
void ZSTD_freeThreadPool (ZSTD_threadPool* pool); </b>/* accept NULL pointer */<b>
size_t ZSTD_CCtx_refThreadPool(ZSTD_CCtx* cctx, ZSTD_threadPool* pool);
</b><p> These prototypes make it possible to share a thread pool among multiple compression contexts.
This can limit resources for applications with multiple threads where each one uses
a threaded compression mode (via ZSTD_c_nbWorkers parameter).
ZSTD_createThreadPool creates a new thread pool with a given number of threads.
Note that the lifetime of such pool must exist while being used.
ZSTD_CCtx_refThreadPool assigns a thread pool to a context (use NULL argument value
to use an internal thread pool).
ZSTD_freeThreadPool frees a thread pool, accepts NULL pointer.
</p></pre><BR>
<a name="Chapter17"></a><h2>Advanced compression functions</h2><pre></pre>
<pre><b>ZSTD_CDict* ZSTD_createCDict_byReference(const void* dictBuffer, size_t dictSize, int compressionLevel);
@@ -1594,7 +1632,7 @@ size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict);
</b><p> This function is DEPRECATED, and equivalent to:
ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
ZSTD_CCtx_refCDict(zcs, cdict);
note : cdict will just be referenced, and must outlive compression session
This prototype will generate compilation warnings.
examples/common.h
+1 -1
View File
@@ -57,7 +57,7 @@ typedef enum {
* Check the zstd error code and die if an error occurred after printing a
* message.
*/
#define CHECK_ZSTD(fn, ...) \
#define CHECK_ZSTD(fn) \
do { \
size_t const err = (fn); \
CHECK(!ZSTD_isError(err), "%s", ZSTD_getErrorName(err)); \
examples/streaming_compression.c
+23 -7
View File
@@ -15,9 +15,12 @@
#include <zstd.h> // presumes zstd library is installed
#include "common.h" // Helper functions, CHECK(), and CHECK_ZSTD()
static void compressFile_orDie(const char* fname, const char* outName, int cLevel)
static void compressFile_orDie(const char* fname, const char* outName, int cLevel,
int nbThreads)
{
fprintf (stderr, "Starting compression of %s with level %d, using %d threads\n",
fname, cLevel, nbThreads);
/* Open the input and output files. */
FILE* const fin = fopen_orDie(fname, "rb");
FILE* const fout = fopen_orDie(outName, "wb");
@@ -39,7 +42,7 @@ static void compressFile_orDie(const char* fname, const char* outName, int cLeve
*/
CHECK_ZSTD( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, cLevel) );
CHECK_ZSTD( ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1) );
ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 4);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads);
/* This loop read from the input file, compresses that entire chunk,
* and writes all output produced to the output file.
@@ -106,19 +109,32 @@ int main(int argc, const char** argv)
{
const char* const exeName = argv[0];
if (argc!=2) {
if (argc < 2) {
printf("wrong arguments\n");
printf("usage:\n");
printf("%s FILE\n", exeName);
printf("%s FILE [LEVEL] [THREADS]\n", exeName);
return 1;
}
int cLevel = 1;
int nbThreads = 4;
if (argc >= 3) {
cLevel = atoi (argv[2]);
CHECK(cLevel != 0, "can't parse LEVEL!");
}
if (argc >= 4) {
nbThreads = atoi (argv[3]);
CHECK(nbThreads != 0, "can't parse THREADS!");
}
const char* const inFilename = argv[1];
char* const outFilename = createOutFilename_orDie(inFilename);
compressFile_orDie(inFilename, outFilename, 1);
compressFile_orDie(inFilename, outFilename, cLevel, nbThreads);
free(outFilename); /* not strictly required, since program execution stops there,
* but some static analyzer main complain otherwise */
* but some static analyzer may complain otherwise */
return 0;
}
examples/streaming_compression_thread_pool.c
+4 -2
View File
@@ -28,8 +28,10 @@ typedef struct compress_args
static void *compressFile_orDie(void *data)
{
const int nbThreads = 16;
compress_args_t *args = (compress_args_t *)data;
fprintf (stderr, "Starting compression of %s with level %d\n", args->fname, args->cLevel);
fprintf (stderr, "Starting compression of %s with level %d, using %d threads\n", args->fname, args->cLevel, nbThreads);
/* Open the input and output files. */
FILE* const fin = fopen_orDie(args->fname, "rb");
FILE* const fout = fopen_orDie(args->outName, "wb");
@@ -56,7 +58,7 @@ static void *compressFile_orDie(void *data)
*/
CHECK_ZSTD( ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, args->cLevel) );
CHECK_ZSTD( ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1) );
ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 16);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, nbThreads);
/* This loop read from the input file, compresses that entire chunk,
* and writes all output produced to the output file.
lib/Makefile
+51 -176
View File
@@ -8,110 +8,13 @@
# You may select, at your option, one of the above-listed licenses.
# ################################################################
# Note: by default, the static library is built single-threaded and dynamic library is built
# multi-threaded. It is possible to force multi or single threaded builds by appending
# -mt or -nomt to the build target (like lib-mt for multi-threaded, lib-nomt for single-threaded).
.PHONY: default
default: lib-release
# define silent mode as default (verbose mode with V=1 or VERBOSE=1)
$(V)$(VERBOSE).SILENT:
# When cross-compiling from linux to windows,
# one might need to specify TARGET_SYSTEM as "Windows."
# Building from Fedora fails without it.
# (but Ubuntu and Debian don't need to set anything)
TARGET_SYSTEM ?= $(OS)
# Version numbers
LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./zstd.h`
LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
LIBVER := $(shell echo $(LIBVER_SCRIPT))
VERSION?= $(LIBVER)
CCVER := $(shell $(CC) --version)
# ZSTD_LIB_MINIFY is a helper variable that
# configures a bunch of other variables to space-optimized defaults.
ZSTD_LIB_MINIFY ?= 0
ifneq ($(ZSTD_LIB_MINIFY), 0)
HAVE_CC_OZ ?= $(shell echo "" | $(CC) -Oz -x c -c - -o /dev/null 2> /dev/null && echo 1 || echo 0)
ZSTD_LEGACY_SUPPORT ?= 0
ZSTD_LIB_DEPRECATED ?= 0
HUF_FORCE_DECOMPRESS_X1 ?= 1
ZSTD_FORCE_DECOMPRESS_SHORT ?= 1
ZSTD_NO_INLINE ?= 1
ZSTD_STRIP_ERROR_STRINGS ?= 1
ifneq ($(HAVE_CC_OZ), 0)
# Some compilers (clang) support an even more space-optimized setting.
CFLAGS += -Oz
else
CFLAGS += -Os
endif
CFLAGS += -fno-stack-protector -fomit-frame-pointer -fno-ident \
-DDYNAMIC_BMI2=0 -DNDEBUG
else
CFLAGS += -O3
endif
DEBUGLEVEL ?= 0
CPPFLAGS += -DXXH_NAMESPACE=ZSTD_ -DDEBUGLEVEL=$(DEBUGLEVEL)
ifeq ($(TARGET_SYSTEM),Windows_NT) # MinGW assumed
CPPFLAGS += -D__USE_MINGW_ANSI_STDIO # compatibility with %zu formatting
endif
DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef -Wpointer-arith \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls -Wmissing-prototypes -Wc++-compat
CFLAGS += $(DEBUGFLAGS) $(MOREFLAGS)
FLAGS = $(CPPFLAGS) $(CFLAGS)
CPPFLAGS_DYNLIB = -DZSTD_MULTITHREAD # dynamic library build defaults to multi-threaded
LDFLAGS_DYNLIB = -pthread
CPPFLAGS_STATLIB = # static library build defaults to single-threaded
HAVE_COLORNEVER = $(shell echo a | grep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
GREP_OPTIONS ?=
ifeq ($HAVE_COLORNEVER, 1)
GREP_OPTIONS += --color=never
endif
GREP = grep $(GREP_OPTIONS)
SED_ERE_OPT ?= -E
ZSTDCOMMON_FILES := $(sort $(wildcard common/*.c))
ZSTDCOMP_FILES := $(sort $(wildcard compress/*.c))
ZSTDDECOMP_FILES := $(sort $(wildcard decompress/*.c))
ZDICT_FILES := $(sort $(wildcard dictBuilder/*.c))
ZDEPR_FILES := $(sort $(wildcard deprecated/*.c))
ZSTD_FILES := $(ZSTDCOMMON_FILES)
ifeq ($(findstring GCC,$(CCVER)),GCC)
decompress/zstd_decompress_block.o : CFLAGS+=-fno-tree-vectorize
endif
# Modules
ZSTD_LIB_COMPRESSION ?= 1
ZSTD_LIB_DECOMPRESSION ?= 1
ZSTD_LIB_DICTBUILDER ?= 1
ZSTD_LIB_DEPRECATED ?= 0
# Legacy support
ZSTD_LEGACY_SUPPORT ?= 5
ZSTD_LEGACY_MULTITHREADED_API ?= 0
# Build size optimizations
HUF_FORCE_DECOMPRESS_X1 ?= 0
HUF_FORCE_DECOMPRESS_X2 ?= 0
ZSTD_FORCE_DECOMPRESS_SHORT ?= 0
ZSTD_FORCE_DECOMPRESS_LONG ?= 0
ZSTD_NO_INLINE ?= 0
ZSTD_STRIP_ERROR_STRINGS ?= 0
# Input variables for libzstd.mk
ifeq ($(ZSTD_LIB_COMPRESSION), 0)
ZSTD_LIB_DICTBUILDER = 0
ZSTD_LIB_DEPRECATED = 0
@@ -122,86 +25,46 @@ ifeq ($(ZSTD_LIB_DECOMPRESSION), 0)
ZSTD_LIB_DEPRECATED = 0
endif
include libzstd.mk
ZSTD_FILES := $(ZSTD_COMMON_FILES) $(ZSTD_LEGACY_FILES)
ifneq ($(ZSTD_LIB_COMPRESSION), 0)
ZSTD_FILES += $(ZSTDCOMP_FILES)
ZSTD_FILES += $(ZSTD_COMPRESS_FILES)
endif
ifneq ($(ZSTD_LIB_DECOMPRESSION), 0)
ZSTD_FILES += $(ZSTDDECOMP_FILES)
ZSTD_FILES += $(ZSTD_DECOMPRESS_FILES)
endif
ifneq ($(ZSTD_LIB_DEPRECATED), 0)
ZSTD_FILES += $(ZDEPR_FILES)
ZSTD_FILES += $(ZSTD_DEPRECATED_FILES)
endif
ifneq ($(ZSTD_LIB_DICTBUILDER), 0)
ZSTD_FILES += $(ZDICT_FILES)
ZSTD_FILES += $(ZSTD_DICTBUILDER_FILES)
endif
ifneq ($(HUF_FORCE_DECOMPRESS_X1), 0)
CFLAGS += -DHUF_FORCE_DECOMPRESS_X1
endif
ifneq ($(HUF_FORCE_DECOMPRESS_X2), 0)
CFLAGS += -DHUF_FORCE_DECOMPRESS_X2
endif
ifneq ($(ZSTD_FORCE_DECOMPRESS_SHORT), 0)
CFLAGS += -DZSTD_FORCE_DECOMPRESS_SHORT
endif
ifneq ($(ZSTD_FORCE_DECOMPRESS_LONG), 0)
CFLAGS += -DZSTD_FORCE_DECOMPRESS_LONG
endif
ifneq ($(ZSTD_NO_INLINE), 0)
CFLAGS += -DZSTD_NO_INLINE
endif
ifneq ($(ZSTD_STRIP_ERROR_STRINGS), 0)
CFLAGS += -DZSTD_STRIP_ERROR_STRINGS
endif
ifneq ($(ZSTD_LEGACY_MULTITHREADED_API), 0)
CFLAGS += -DZSTD_LEGACY_MULTITHREADED_API
endif
ifneq ($(ZSTD_LEGACY_SUPPORT), 0)
ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?), 0)
ZSTD_FILES += $(shell ls legacy/*.c | $(GREP) 'v0[$(ZSTD_LEGACY_SUPPORT)-7]')
endif
endif
CPPFLAGS += -DZSTD_LEGACY_SUPPORT=$(ZSTD_LEGACY_SUPPORT)
ZSTD_LOCAL_SRC := $(notdir $(ZSTD_FILES))
ZSTD_LOCAL_OBJ := $(ZSTD_LOCAL_SRC:.c=.o)
ZSTD_LOCAL_OBJ0 := $(ZSTD_LOCAL_SRC:.c=.o)
ZSTD_LOCAL_OBJ := $(ZSTD_LOCAL_OBJ0:.S=.o)
ZSTD_SUBDIR := common compress decompress dictBuilder legacy deprecated
vpath %.c $(ZSTD_SUBDIR)
VERSION := $(ZSTD_VERSION)
UNAME := $(shell uname)
# Note: by default, the static library is built single-threaded and dynamic library is built
# multi-threaded. It is possible to force multi or single threaded builds by appending
# -mt or -nomt to the build target (like lib-mt for multi-threaded, lib-nomt for single-threaded).
.PHONY: default
default: lib-release
ifndef BUILD_DIR
ifeq ($(UNAME), Darwin)
ifeq ($(shell md5 < /dev/null > /dev/null; echo $$?), 0)
HASH ?= md5
endif
else ifeq ($(UNAME), FreeBSD)
HASH ?= gmd5sum
else ifeq ($(UNAME), NetBSD)
HASH ?= md5 -n
else ifeq ($(UNAME), OpenBSD)
HASH ?= md5
CPPFLAGS_DYNLIB += -DZSTD_MULTITHREAD # dynamic library build defaults to multi-threaded
LDFLAGS_DYNLIB += -pthread
CPPFLAGS_STATLIB += # static library build defaults to single-threaded
ifeq ($(findstring GCC,$(CCVER)),GCC)
decompress/zstd_decompress_block.o : CFLAGS+=-fno-tree-vectorize
endif
HASH ?= md5sum
HASH_DIR = conf_$(shell echo $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(ZSTD_FILES) | $(HASH) | cut -f 1 -d " " )
HAVE_HASH :=$(shell echo 1 | $(HASH) > /dev/null && echo 1 || echo 0)
ifeq ($(HAVE_HASH),0)
$(info warning : could not find HASH ($(HASH)), needed to differentiate builds using different flags)
BUILD_DIR := obj/generic_noconf
endif
endif # BUILD_DIR
# macOS linker doesn't support -soname, and use different extension
@@ -212,19 +75,16 @@ ifeq ($(UNAME), Darwin)
SHARED_EXT_VER = $(LIBVER).$(SHARED_EXT)
SONAME_FLAGS = -install_name $(LIBDIR)/libzstd.$(SHARED_EXT_MAJOR) -compatibility_version $(LIBVER_MAJOR) -current_version $(LIBVER)
else
SONAME_FLAGS = -Wl,-soname=libzstd.$(SHARED_EXT).$(LIBVER_MAJOR)
ifeq ($(UNAME), AIX)
SONAME_FLAGS =
else
SONAME_FLAGS = -Wl,-soname=libzstd.$(SHARED_EXT).$(LIBVER_MAJOR)
endif
SHARED_EXT = so
SHARED_EXT_MAJOR = $(SHARED_EXT).$(LIBVER_MAJOR)
SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
endif
SET_CACHE_DIRECTORY = \
+$(MAKE) --no-print-directory $@ \
BUILD_DIR=obj/$(HASH_DIR) \
CPPFLAGS="$(CPPFLAGS)" \
CFLAGS="$(CFLAGS)" \
LDFLAGS="$(LDFLAGS)"
.PHONY: all
all: lib
@@ -233,6 +93,13 @@ all: lib
.PHONY: libzstd.a # must be run every time
libzstd.a: CPPFLAGS += $(CPPFLAGS_STATLIB)
SET_CACHE_DIRECTORY = \
+$(MAKE) --no-print-directory $@ \
BUILD_DIR=obj/$(HASH_DIR) \
CPPFLAGS="$(CPPFLAGS)" \
CFLAGS="$(CFLAGS)" \
LDFLAGS="$(LDFLAGS)"
ifndef BUILD_DIR
# determine BUILD_DIR from compilation flags
@@ -343,6 +210,14 @@ $(ZSTD_STATLIB_DIR)/%.o : %.c $(ZSTD_STATLIB_DIR)/%.d | $(ZSTD_STATLIB_DIR)
@echo CC $@
$(COMPILE.c) $(DEPFLAGS) $(ZSTD_STATLIB_DIR)/$*.d $(OUTPUT_OPTION) $<
$(ZSTD_DYNLIB_DIR)/%.o : %.S | $(ZSTD_DYNLIB_DIR)
@echo AS $@
$(COMPILE.c) $(OUTPUT_OPTION) $<
$(ZSTD_STATLIB_DIR)/%.o : %.S | $(ZSTD_STATLIB_DIR)
@echo AS $@
$(COMPILE.c) $(OUTPUT_OPTION) $<
MKDIR ?= mkdir
$(BUILD_DIR) $(ZSTD_DYNLIB_DIR) $(ZSTD_STATLIB_DIR):
$(MKDIR) -p $@
@@ -374,9 +249,9 @@ clean:
#-----------------------------------------------------------------------------
# make install is validated only for below listed environments
#-----------------------------------------------------------------------------
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku))
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku AIX))
all: libzstd.pc
lib: libzstd.pc
HAS_EXPLICIT_EXEC_PREFIX := $(if $(or $(EXEC_PREFIX),$(exec_prefix)),1,)
@@ -421,16 +296,16 @@ INSTALL_PROGRAM ?= $(INSTALL)
INSTALL_DATA ?= $(INSTALL) -m 644
libzstd.pc:
libzstd.pc: libzstd.pc.in
@echo creating pkgconfig
@sed $(SED_ERE_OPT) \
-e 's|@PREFIX@|$(PREFIX)|' \
-e 's|@EXEC_PREFIX@|$(PCEXEC_PREFIX)|' \
-e 's|@INCLUDEDIR@|$(PCINCPREFIX)$(PCINCDIR)|' \
-e 's|@LIBDIR@|$(PCLIBPREFIX)$(PCLIBDIR)|' \
-e 's|@VERSION@|$(VERSION)|' \
$< >$@
-e 's|@INCLUDEDIR@|$(PCINCPREFIX)$(PCINCDIR)|' \
-e 's|@LIBDIR@|$(PCLIBPREFIX)$(PCLIBDIR)|' \
-e 's|@VERSION@|$(VERSION)|' \
-e 's|@LIBS_PRIVATE@|$(LDFLAGS_DYNLIB)|' \
$< >$@
.PHONY: install
install: install-pc install-static install-shared install-includes
lib/README.md
+7 -1
View File
@@ -125,7 +125,7 @@ The file structure is designed to make this selection manually achievable for an
`ZSTD_getErrorName` (implied by `ZSTD_LIB_MINIFY`).
Finally, when integrating into your application, make sure you're doing link-
time optimation and unused symbol garbage collection (via some combination of,
time optimization and unused symbol garbage collection (via some combination of,
e.g., `-flto`, `-ffat-lto-objects`, `-fuse-linker-plugin`,
`-ffunction-sections`, `-fdata-sections`, `-fmerge-all-constants`,
`-Wl,--gc-sections`, `-Wl,-z,norelro`, and an archiver that understands
@@ -155,6 +155,12 @@ The file structure is designed to make this selection manually achievable for an
- The build macro `ZSTD_NO_INTRINSICS` can be defined to disable all explicit intrinsics.
Compiler builtins are still used.
- The build macro `ZSTD_DECODER_INTERNAL_BUFFER` can be set to control
the amount of extra memory used during decompression to store literals.
This defaults to 64kB. Reducing this value reduces the memory footprint of
`ZSTD_DCtx` decompression contexts,
but might also result in a small decompression speed cost.
#### Windows : using MinGW+MSYS to create DLL
lib/common/bitstream.h
+24 -9
View File
@@ -143,10 +143,16 @@ MEM_STATIC unsigned BIT_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
# if STATIC_BMI2 == 1
return _lzcnt_u32(val) ^ 31;
return _lzcnt_u32(val) ^ 31;
# else
unsigned long r = 0;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
if (val != 0) {
unsigned long r;
_BitScanReverse(&r, val);
return (unsigned)r;
} else {
/* Should not reach this code path */
__assume(0);
}
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
@@ -293,22 +299,22 @@ MEM_STATIC size_t BIT_initDStream(BIT_DStream_t* bitD, const void* srcBuffer, si
switch(srcSize)
{
case 7: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[6]) << (sizeof(bitD->bitContainer)*8 - 16);
/* fall-through */
ZSTD_FALLTHROUGH;
case 6: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[5]) << (sizeof(bitD->bitContainer)*8 - 24);
/* fall-through */
ZSTD_FALLTHROUGH;
case 5: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[4]) << (sizeof(bitD->bitContainer)*8 - 32);
/* fall-through */
ZSTD_FALLTHROUGH;
case 4: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[3]) << 24;
/* fall-through */
ZSTD_FALLTHROUGH;
case 3: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[2]) << 16;
/* fall-through */
ZSTD_FALLTHROUGH;
case 2: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[1]) << 8;
/* fall-through */
ZSTD_FALLTHROUGH;
default: break;
}
@@ -332,7 +338,16 @@ MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getMiddleBits(size_t bitContainer, U32 c
U32 const regMask = sizeof(bitContainer)*8 - 1;
/* if start > regMask, bitstream is corrupted, and result is undefined */
assert(nbBits < BIT_MASK_SIZE);
/* x86 transform & ((1 << nbBits) - 1) to bzhi instruction, it is better
* than accessing memory. When bmi2 instruction is not present, we consider
* such cpus old (pre-Haswell, 2013) and their performance is not of that
* importance.
*/
#if defined(__x86_64__) || defined(_M_X86)
return (bitContainer >> (start & regMask)) & ((((U64)1) << nbBits) - 1);
#else
return (bitContainer >> (start & regMask)) & BIT_mask[nbBits];
#endif
}
MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getLowerBits(size_t bitContainer, U32 const nbBits)
lib/common/compiler.h
+92 -46
View File
@@ -11,6 +11,8 @@
#ifndef ZSTD_COMPILER_H
#define ZSTD_COMPILER_H
#include "portability_macros.h"
/*-*******************************************************
* Compiler specifics
*********************************************************/
@@ -40,7 +42,7 @@
/**
On MSVC qsort requires that functions passed into it use the __cdecl calling conversion(CC).
This explictly marks such functions as __cdecl so that the code will still compile
This explicitly marks such functions as __cdecl so that the code will still compile
if a CC other than __cdecl has been made the default.
*/
#if defined(_MSC_VER)
@@ -92,29 +94,17 @@
/* target attribute */
#ifndef __has_attribute
#define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */
#endif
#if defined(__GNUC__) || defined(__ICCARM__)
# define TARGET_ATTRIBUTE(target) __attribute__((__target__(target)))
#else
# define TARGET_ATTRIBUTE(target)
#endif
/* Enable runtime BMI2 dispatch based on the CPU.
* Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default.
/* Target attribute for BMI2 dynamic dispatch.
* Enable lzcnt, bmi, and bmi2.
* We test for bmi1 & bmi2. lzcnt is included in bmi1.
*/
#ifndef DYNAMIC_BMI2
#if ((defined(__clang__) && __has_attribute(__target__)) \
|| (defined(__GNUC__) \
&& (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \
&& (defined(__x86_64__) || defined(_M_X86)) \
&& !defined(__BMI2__)
# define DYNAMIC_BMI2 1
#else
# define DYNAMIC_BMI2 0
#endif
#endif
#define BMI2_TARGET_ATTRIBUTE TARGET_ATTRIBUTE("lzcnt,bmi,bmi2")
/* prefetch
* can be disabled, by declaring NO_PREFETCH build macro */
@@ -150,8 +140,9 @@
}
/* vectorization
* older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax */
#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__)
* older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax,
* and some compilers, like Intel ICC and MCST LCC, do not support it at all. */
#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__) && !defined(__LCC__)
# if (__GNUC__ == 4 && __GNUC_MINOR__ > 3) || (__GNUC__ >= 5)
# define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize")))
# else
@@ -197,25 +188,91 @@
#define STATIC_BMI2 0
#endif
/* compat. with non-clang compilers */
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
/* compat. with non-clang compilers */
#ifndef __has_feature
# define __has_feature(x) 0
#endif
/* detects whether we are being compiled under msan */
#ifndef ZSTD_MEMORY_SANITIZER
# if __has_feature(memory_sanitizer)
# define ZSTD_MEMORY_SANITIZER 1
# else
# define ZSTD_MEMORY_SANITIZER 0
/* compile time determination of SIMD support */
#if !defined(ZSTD_NO_INTRINSICS)
# if defined(__SSE2__) || defined(_M_AMD64) || (defined (_M_IX86) && defined(_M_IX86_FP) && (_M_IX86_FP >= 2))
# define ZSTD_ARCH_X86_SSE2
# endif
# if defined(__ARM_NEON) || defined(_M_ARM64)
# define ZSTD_ARCH_ARM_NEON
# endif
#
# if defined(ZSTD_ARCH_X86_SSE2)
# include <emmintrin.h>
# elif defined(ZSTD_ARCH_ARM_NEON)
# include <arm_neon.h>
# endif
#endif
/* C-language Attributes are added in C23. */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ > 201710L) && defined(__has_c_attribute)
# define ZSTD_HAS_C_ATTRIBUTE(x) __has_c_attribute(x)
#else
# define ZSTD_HAS_C_ATTRIBUTE(x) 0
#endif
/* Only use C++ attributes in C++. Some compilers report support for C++
* attributes when compiling with C.
*/
#if defined(__cplusplus) && defined(__has_cpp_attribute)
# define ZSTD_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
#else
# define ZSTD_HAS_CPP_ATTRIBUTE(x) 0
#endif
/* Define ZSTD_FALLTHROUGH macro for annotating switch case with the 'fallthrough' attribute.
* - C23: https://en.cppreference.com/w/c/language/attributes/fallthrough
* - CPP17: https://en.cppreference.com/w/cpp/language/attributes/fallthrough
* - Else: __attribute__((__fallthrough__))
*/
#ifndef ZSTD_FALLTHROUGH
# if ZSTD_HAS_C_ATTRIBUTE(fallthrough)
# define ZSTD_FALLTHROUGH [[fallthrough]]
# elif ZSTD_HAS_CPP_ATTRIBUTE(fallthrough)
# define ZSTD_FALLTHROUGH [[fallthrough]]
# elif __has_attribute(__fallthrough__)
/* Leading semicolon is to satisfy gcc-11 with -pedantic. Without the semicolon
* gcc complains about: a label can only be part of a statement and a declaration is not a statement.
*/
# define ZSTD_FALLTHROUGH ; __attribute__((__fallthrough__))
# else
# define ZSTD_FALLTHROUGH
# endif
#endif
/*-**************************************************************
* Alignment check
*****************************************************************/
/* this test was initially positioned in mem.h,
* but this file is removed (or replaced) for linux kernel
* so it's now hosted in compiler.h,
* which remains valid for both user & kernel spaces.
*/
#ifndef ZSTD_ALIGNOF
# if defined(__GNUC__) || defined(_MSC_VER)
/* covers gcc, clang & MSVC */
/* note : this section must come first, before C11,
* due to a limitation in the kernel source generator */
# define ZSTD_ALIGNOF(T) __alignof(T)
# elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
/* C11 support */
# include <stdalign.h>
# define ZSTD_ALIGNOF(T) alignof(T)
# else
/* No known support for alignof() - imperfect backup */
# define ZSTD_ALIGNOF(T) (sizeof(void*) < sizeof(T) ? sizeof(void*) : sizeof(T))
# endif
#endif /* ZSTD_ALIGNOF */
/*-**************************************************************
* Sanitizer
*****************************************************************/
#if ZSTD_MEMORY_SANITIZER
/* Not all platforms that support msan provide sanitizers/msan_interface.h.
* We therefore declare the functions we need ourselves, rather than trying to
@@ -237,17 +294,6 @@ void __msan_poison(const volatile void *a, size_t size);
intptr_t __msan_test_shadow(const volatile void *x, size_t size);
#endif
/* detects whether we are being compiled under asan */
#ifndef ZSTD_ADDRESS_SANITIZER
# if __has_feature(address_sanitizer)
# define ZSTD_ADDRESS_SANITIZER 1
# elif defined(__SANITIZE_ADDRESS__)
# define ZSTD_ADDRESS_SANITIZER 1
# else
# define ZSTD_ADDRESS_SANITIZER 0
# endif
#endif
#if ZSTD_ADDRESS_SANITIZER
/* Not all platforms that support asan provide sanitizers/asan_interface.h.
* We therefore declare the functions we need ourselves, rather than trying to
lib/common/entropy_common.c
+11 -5
View File
@@ -43,8 +43,14 @@ static U32 FSE_ctz(U32 val)
assert(val != 0);
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
return _BitScanForward(&r, val) ? (unsigned)r : 0;
if (val != 0) {
unsigned long r;
_BitScanForward(&r, val);
return (unsigned)r;
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */
return __builtin_ctz(val);
# elif defined(__ICCARM__) /* IAR Intrinsic */
@@ -217,7 +223,7 @@ static size_t FSE_readNCount_body_default(
}
#if DYNAMIC_BMI2
TARGET_ATTRIBUTE("bmi2") static size_t FSE_readNCount_body_bmi2(
BMI2_TARGET_ATTRIBUTE static size_t FSE_readNCount_body_bmi2(
short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr,
const void* headerBuffer, size_t hbSize)
{
@@ -299,7 +305,7 @@ HUF_readStats_body(BYTE* huffWeight, size_t hwSize, U32* rankStats,
ZSTD_memset(rankStats, 0, (HUF_TABLELOG_MAX + 1) * sizeof(U32));
weightTotal = 0;
{ U32 n; for (n=0; n<oSize; n++) {
if (huffWeight[n] >= HUF_TABLELOG_MAX) return ERROR(corruption_detected);
if (huffWeight[n] > HUF_TABLELOG_MAX) return ERROR(corruption_detected);
rankStats[huffWeight[n]]++;
weightTotal += (1 << huffWeight[n]) >> 1;
} }
@@ -337,7 +343,7 @@ static size_t HUF_readStats_body_default(BYTE* huffWeight, size_t hwSize, U32* r
}
#if DYNAMIC_BMI2
static TARGET_ATTRIBUTE("bmi2") size_t HUF_readStats_body_bmi2(BYTE* huffWeight, size_t hwSize, U32* rankStats,
static BMI2_TARGET_ATTRIBUTE size_t HUF_readStats_body_bmi2(BYTE* huffWeight, size_t hwSize, U32* rankStats,
U32* nbSymbolsPtr, U32* tableLogPtr,
const void* src, size_t srcSize,
void* workSpace, size_t wkspSize)
lib/common/error_private.h
+79
View File
@@ -22,6 +22,8 @@ extern "C" {
* Dependencies
******************************************/
#include "../zstd_errors.h" /* enum list */
#include "compiler.h"
#include "debug.h"
#include "zstd_deps.h" /* size_t */
@@ -73,6 +75,83 @@ ERR_STATIC const char* ERR_getErrorName(size_t code)
return ERR_getErrorString(ERR_getErrorCode(code));
}
/**
* Ignore: this is an internal helper.
*
* This is a helper function to help force C99-correctness during compilation.
* Under strict compilation modes, variadic macro arguments can't be empty.
* However, variadic function arguments can be. Using a function therefore lets
* us statically check that at least one (string) argument was passed,
* independent of the compilation flags.
*/
static INLINE_KEYWORD UNUSED_ATTR
void _force_has_format_string(const char *format, ...) {
(void)format;
}
/**
* Ignore: this is an internal helper.
*
* We want to force this function invocation to be syntactically correct, but
* we don't want to force runtime evaluation of its arguments.
*/
#define _FORCE_HAS_FORMAT_STRING(...) \
if (0) { \
_force_has_format_string(__VA_ARGS__); \
}
#define ERR_QUOTE(str) #str
/**
* Return the specified error if the condition evaluates to true.
*
* In debug modes, prints additional information.
* In order to do that (particularly, printing the conditional that failed),
* this can't just wrap RETURN_ERROR().
*/
#define RETURN_ERROR_IF(cond, err, ...) \
if (cond) { \
RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(cond), ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
}
/**
* Unconditionally return the specified error.
*
* In debug modes, prints additional information.
*/
#define RETURN_ERROR(err, ...) \
do { \
RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \
__FILE__, __LINE__, ERR_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
} while(0);
/**
* If the provided expression evaluates to an error code, returns that error code.
*
* In debug modes, prints additional information.
*/
#define FORWARD_IF_ERROR(err, ...) \
do { \
size_t const err_code = (err); \
if (ERR_isError(err_code)) { \
RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \
__FILE__, __LINE__, ERR_QUOTE(err), ERR_getErrorName(err_code)); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return err_code; \
} \
} while(0);
#if defined (__cplusplus)
}
#endif
lib/common/fse.h
+2 -1
View File
@@ -336,8 +336,9 @@ size_t FSE_buildCTable_rle (FSE_CTable* ct, unsigned char symbolValue);
/* FSE_buildCTable_wksp() :
* Same as FSE_buildCTable(), but using an externally allocated scratch buffer (`workSpace`).
* `wkspSize` must be >= `FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)` of `unsigned`.
* See FSE_buildCTable_wksp() for breakdown of workspace usage.
*/
#define FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog) (maxSymbolValue + 2 + (1ull << (tableLog - 2)))
#define FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog) (((maxSymbolValue + 2) + (1ull << (tableLog)))/2 + sizeof(U64)/sizeof(U32) /* additional 8 bytes for potential table overwrite */)
#define FSE_BUILD_CTABLE_WORKSPACE_SIZE(maxSymbolValue, tableLog) (sizeof(unsigned) * FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog))
size_t FSE_buildCTable_wksp(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize);
lib/common/fse_decompress.c
+1 -1
View File
@@ -365,7 +365,7 @@ static size_t FSE_decompress_wksp_body_default(void* dst, size_t dstCapacity, co
}
#if DYNAMIC_BMI2
TARGET_ATTRIBUTE("bmi2") static size_t FSE_decompress_wksp_body_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize)
BMI2_TARGET_ATTRIBUTE static size_t FSE_decompress_wksp_body_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize)
{
return FSE_decompress_wksp_body(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, 1);
}
lib/common/huf.h
+24 -22
View File
@@ -89,9 +89,9 @@ HUF_PUBLIC_API size_t HUF_compress2 (void* dst, size_t dstCapacity,
/** HUF_compress4X_wksp() :
* Same as HUF_compress2(), but uses externally allocated `workSpace`.
* `workspace` must have minimum alignment of 4, and be at least as large as HUF_WORKSPACE_SIZE */
#define HUF_WORKSPACE_SIZE ((6 << 10) + 256)
#define HUF_WORKSPACE_SIZE_U32 (HUF_WORKSPACE_SIZE / sizeof(U32))
* `workspace` must be at least as large as HUF_WORKSPACE_SIZE */
#define HUF_WORKSPACE_SIZE ((8 << 10) + 512 /* sorting scratch space */)
#define HUF_WORKSPACE_SIZE_U64 (HUF_WORKSPACE_SIZE / sizeof(U64))
HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned tableLog,
@@ -116,11 +116,11 @@ HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity,
/* *** Constants *** */
#define HUF_TABLELOG_MAX 12 /* max runtime value of tableLog (due to static allocation); can be modified up to HUF_ABSOLUTEMAX_TABLELOG */
#define HUF_TABLELOG_MAX 12 /* max runtime value of tableLog (due to static allocation); can be modified up to HUF_TABLELOG_ABSOLUTEMAX */
#define HUF_TABLELOG_DEFAULT 11 /* default tableLog value when none specified */
#define HUF_SYMBOLVALUE_MAX 255
#define HUF_TABLELOG_ABSOLUTEMAX 15 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */
#define HUF_TABLELOG_ABSOLUTEMAX 12 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */
#if (HUF_TABLELOG_MAX > HUF_TABLELOG_ABSOLUTEMAX)
# error "HUF_TABLELOG_MAX is too large !"
#endif
@@ -136,15 +136,11 @@ HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity,
/* static allocation of HUF's Compression Table */
/* this is a private definition, just exposed for allocation and strict aliasing purpose. never EVER access its members directly */
struct HUF_CElt_s {
U16 val;
BYTE nbBits;
}; /* typedef'd to HUF_CElt */
typedef struct HUF_CElt_s HUF_CElt; /* consider it an incomplete type */
#define HUF_CTABLE_SIZE_U32(maxSymbolValue) ((maxSymbolValue)+1) /* Use tables of U32, for proper alignment */
#define HUF_CTABLE_SIZE(maxSymbolValue) (HUF_CTABLE_SIZE_U32(maxSymbolValue) * sizeof(U32))
typedef size_t HUF_CElt; /* consider it an incomplete type */
#define HUF_CTABLE_SIZE_ST(maxSymbolValue) ((maxSymbolValue)+2) /* Use tables of size_t, for proper alignment */
#define HUF_CTABLE_SIZE(maxSymbolValue) (HUF_CTABLE_SIZE_ST(maxSymbolValue) * sizeof(size_t))
#define HUF_CREATE_STATIC_CTABLE(name, maxSymbolValue) \
HUF_CElt name[HUF_CTABLE_SIZE_U32(maxSymbolValue)] /* no final ; */
HUF_CElt name[HUF_CTABLE_SIZE_ST(maxSymbolValue)] /* no final ; */
/* static allocation of HUF's DTable */
typedef U32 HUF_DTable;
@@ -194,6 +190,7 @@ size_t HUF_buildCTable (HUF_CElt* CTable, const unsigned* count, unsigned maxSym
size_t HUF_writeCTable (void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog);
size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog, void* workspace, size_t workspaceSize);
size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable);
size_t HUF_compress4X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2);
size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue);
int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue);
@@ -206,12 +203,13 @@ typedef enum {
* Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
* If it uses hufTable it does not modify hufTable or repeat.
* If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used.
* If preferRepeat then the old table will always be used if valid. */
* If preferRepeat then the old table will always be used if valid.
* If suspectUncompressible then some sampling checks will be run to potentially skip huffman coding */
size_t HUF_compress4X_repeat(void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned tableLog,
void* workSpace, size_t wkspSize, /**< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2);
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2, unsigned suspectUncompressible);
/** HUF_buildCTable_wksp() :
* Same as HUF_buildCTable(), but using externally allocated scratch buffer.
@@ -249,11 +247,10 @@ size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize,
* Loading a CTable saved with HUF_writeCTable() */
size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize, unsigned *hasZeroWeights);
/** HUF_getNbBits() :
/** HUF_getNbBitsFromCTable() :
* Read nbBits from CTable symbolTable, for symbol `symbolValue` presumed <= HUF_SYMBOLVALUE_MAX
* Note 1 : is not inlined, as HUF_CElt definition is private
* Note 2 : const void* used, so that it can provide a statically allocated table as argument (which uses type U32) */
U32 HUF_getNbBits(const void* symbolTable, U32 symbolValue);
* Note 1 : is not inlined, as HUF_CElt definition is private */
U32 HUF_getNbBitsFromCTable(const HUF_CElt* symbolTable, U32 symbolValue);
/*
* HUF_decompress() does the following:
@@ -305,18 +302,20 @@ size_t HUF_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* c
/* ====================== */
size_t HUF_compress1X (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog);
size_t HUF_compress1X_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */
size_t HUF_compress1X_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U64 U64 */
size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable);
size_t HUF_compress1X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2);
/** HUF_compress1X_repeat() :
* Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
* If it uses hufTable it does not modify hufTable or repeat.
* If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used.
* If preferRepeat then the old table will always be used if valid. */
* If preferRepeat then the old table will always be used if valid.
* If suspectUncompressible then some sampling checks will be run to potentially skip huffman coding */
size_t HUF_compress1X_repeat(void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned tableLog,
void* workSpace, size_t wkspSize, /**< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2);
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2, unsigned suspectUncompressible);
size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* single-symbol decoder */
#ifndef HUF_FORCE_DECOMPRESS_X1
@@ -354,6 +353,9 @@ size_t HUF_decompress4X_hufOnly_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t ds
#ifndef HUF_FORCE_DECOMPRESS_X2
size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2);
#endif
#ifndef HUF_FORCE_DECOMPRESS_X1
size_t HUF_readDTableX2_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2);
#endif
#endif /* HUF_STATIC_LINKING_ONLY */
lib/common/mem.h
+18
View File
@@ -51,6 +51,8 @@ extern "C" {
# include <stdint.h> /* intptr_t */
# endif
typedef uint8_t BYTE;
typedef uint8_t U8;
typedef int8_t S8;
typedef uint16_t U16;
typedef int16_t S16;
typedef uint32_t U32;
@@ -63,6 +65,8 @@ extern "C" {
# error "this implementation requires char to be exactly 8-bit type"
#endif
typedef unsigned char BYTE;
typedef unsigned char U8;
typedef signed char S8;
#if USHRT_MAX != 65535
# error "this implementation requires short to be exactly 16-bit type"
#endif
@@ -153,8 +157,22 @@ MEM_STATIC unsigned MEM_64bits(void) { return sizeof(size_t)==8; }
MEM_STATIC unsigned MEM_isLittleEndian(void)
{
#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
return 1;
#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
return 0;
#elif defined(__clang__) && __LITTLE_ENDIAN__
return 1;
#elif defined(__clang__) && __BIG_ENDIAN__
return 0;
#elif defined(_MSC_VER) && (_M_AMD64 || _M_IX86)
return 1;
#elif defined(__DMC__) && defined(_M_IX86)
return 1;
#else
const union { U32 u; BYTE c[4]; } one = { 1 }; /* don't use static : performance detrimental */
return one.c[0];
#endif
}
#if defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==2)
lib/common/portability_macros.h
+131
View File
@@ -0,0 +1,131 @@
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#ifndef ZSTD_PORTABILITY_MACROS_H
#define ZSTD_PORTABILITY_MACROS_H
/**
* This header file contains macro defintions to support portability.
* This header is shared between C and ASM code, so it MUST only
* contain macro definitions. It MUST not contain any C code.
*
* This header ONLY defines macros to detect platforms/feature support.
*
*/
/* compat. with non-clang compilers */
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
/* compat. with non-clang compilers */
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
/* compat. with non-clang compilers */
#ifndef __has_feature
# define __has_feature(x) 0
#endif
/* detects whether we are being compiled under msan */
#ifndef ZSTD_MEMORY_SANITIZER
# if __has_feature(memory_sanitizer)
# define ZSTD_MEMORY_SANITIZER 1
# else
# define ZSTD_MEMORY_SANITIZER 0
# endif
#endif
/* detects whether we are being compiled under asan */
#ifndef ZSTD_ADDRESS_SANITIZER
# if __has_feature(address_sanitizer)
# define ZSTD_ADDRESS_SANITIZER 1
# elif defined(__SANITIZE_ADDRESS__)
# define ZSTD_ADDRESS_SANITIZER 1
# else
# define ZSTD_ADDRESS_SANITIZER 0
# endif
#endif
/* detects whether we are being compiled under dfsan */
#ifndef ZSTD_DATAFLOW_SANITIZER
# if __has_feature(dataflow_sanitizer)
# define ZSTD_DATAFLOW_SANITIZER 1
# else
# define ZSTD_DATAFLOW_SANITIZER 0
# endif
#endif
/* Enable runtime BMI2 dispatch based on the CPU.
* Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default.
*/
#ifndef DYNAMIC_BMI2
#if ((defined(__clang__) && __has_attribute(__target__)) \
|| (defined(__GNUC__) \
&& (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \
&& (defined(__x86_64__) || defined(_M_X64)) \
&& !defined(__BMI2__)
# define DYNAMIC_BMI2 1
#else
# define DYNAMIC_BMI2 0
#endif
#endif
/**
* Only enable assembly for GNUC comptabile compilers,
* because other platforms may not support GAS assembly syntax.
*
* Only enable assembly for Linux / MacOS, other platforms may
* work, but they haven't been tested. This could likely be
* extended to BSD systems.
*
* Disable assembly when MSAN is enabled, because MSAN requires
* 100% of code to be instrumented to work.
*/
#if defined(__GNUC__)
# if defined(__linux__) || defined(__linux) || defined(__APPLE__)
# if ZSTD_MEMORY_SANITIZER
# define ZSTD_ASM_SUPPORTED 0
# elif ZSTD_DATAFLOW_SANITIZER
# define ZSTD_ASM_SUPPORTED 0
# else
# define ZSTD_ASM_SUPPORTED 1
# endif
# else
# define ZSTD_ASM_SUPPORTED 0
# endif
#else
# define ZSTD_ASM_SUPPORTED 0
#endif
/**
* Determines whether we should enable assembly for x86-64
* with BMI2.
*
* Enable if all of the following conditions hold:
* - ASM hasn't been explicitly disabled by defining ZSTD_DISABLE_ASM
* - Assembly is supported
* - We are compiling for x86-64 and either:
* - DYNAMIC_BMI2 is enabled
* - BMI2 is supported at compile time
*/
#if !defined(ZSTD_DISABLE_ASM) && \
ZSTD_ASM_SUPPORTED && \
defined(__x86_64__) && \
(DYNAMIC_BMI2 || defined(__BMI2__))
# define ZSTD_ENABLE_ASM_X86_64_BMI2 1
#else
# define ZSTD_ENABLE_ASM_X86_64_BMI2 0
#endif
#endif /* ZSTD_PORTABILITY_MACROS_H */
lib/common/xxhash.c
+6 -806
View File
@@ -5,7 +5,7 @@
* You can contact the author at :
* - xxHash homepage: http://www.xxhash.com
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
@@ -13,812 +13,12 @@
*/
/* *************************************
* Tuning parameters
***************************************/
/*!XXH_FORCE_MEMORY_ACCESS :
* By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable.
* Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal.
* The below switch allow to select different access method for improved performance.
* Method 0 (default) : use `memcpy()`. Safe and portable.
* Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable).
* This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`.
* Method 2 : direct access. This method doesn't depend on compiler but violate C standard.
* It can generate buggy code on targets which do not support unaligned memory accesses.
* But in some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6)
* See http://stackoverflow.com/a/32095106/646947 for details.
* Prefer these methods in priority order (0 > 1 > 2)
/*
* xxhash.c instantiates functions defined in xxhash.h
*/
#ifndef XXH_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) )) || \
defined(__ICCARM__)
# define XXH_FORCE_MEMORY_ACCESS 1
# endif
#endif
/*!XXH_ACCEPT_NULL_INPUT_POINTER :
* If the input pointer is a null pointer, xxHash default behavior is to trigger a memory access error, since it is a bad pointer.
* When this option is enabled, xxHash output for null input pointers will be the same as a null-length input.
* By default, this option is disabled. To enable it, uncomment below define :
*/
/* #define XXH_ACCEPT_NULL_INPUT_POINTER 1 */
#define XXH_STATIC_LINKING_ONLY /* access advanced declarations */
#define XXH_IMPLEMENTATION /* access definitions */
/*!XXH_FORCE_NATIVE_FORMAT :
* By default, xxHash library provides endian-independent Hash values, based on little-endian convention.
* Results are therefore identical for little-endian and big-endian CPU.
* This comes at a performance cost for big-endian CPU, since some swapping is required to emulate little-endian format.
* Should endian-independence be of no importance for your application, you may set the #define below to 1,
* to improve speed for Big-endian CPU.
* This option has no impact on Little_Endian CPU.
*/
#ifndef XXH_FORCE_NATIVE_FORMAT /* can be defined externally */
# define XXH_FORCE_NATIVE_FORMAT 0
#endif
/*!XXH_FORCE_ALIGN_CHECK :
* This is a minor performance trick, only useful with lots of very small keys.
* It means : check for aligned/unaligned input.
* The check costs one initial branch per hash; set to 0 when the input data
* is guaranteed to be aligned.
*/
#ifndef XXH_FORCE_ALIGN_CHECK /* can be defined externally */
# if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64)
# define XXH_FORCE_ALIGN_CHECK 0
# else
# define XXH_FORCE_ALIGN_CHECK 1
# endif
#endif
/* *************************************
* Includes & Memory related functions
***************************************/
/* Modify the local functions below should you wish to use some other memory routines */
/* for ZSTD_malloc(), ZSTD_free() */
#define ZSTD_DEPS_NEED_MALLOC
#include "zstd_deps.h" /* size_t, ZSTD_malloc, ZSTD_free, ZSTD_memcpy */
static void* XXH_malloc(size_t s) { return ZSTD_malloc(s); }
static void XXH_free (void* p) { ZSTD_free(p); }
static void* XXH_memcpy(void* dest, const void* src, size_t size) { return ZSTD_memcpy(dest,src,size); }
#ifndef XXH_STATIC_LINKING_ONLY
# define XXH_STATIC_LINKING_ONLY
#endif
#include "xxhash.h"
/* *************************************
* Compiler Specific Options
***************************************/
#include "compiler.h"
/* *************************************
* Basic Types
***************************************/
#include "mem.h" /* BYTE, U32, U64, size_t */
#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2))
/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */
static U32 XXH_read32(const void* memPtr) { return *(const U32*) memPtr; }
static U64 XXH_read64(const void* memPtr) { return *(const U64*) memPtr; }
#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1))
/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */
/* currently only defined for gcc and icc */
typedef union { U32 u32; U64 u64; } __attribute__((packed)) unalign;
static U32 XXH_read32(const void* ptr) { return ((const unalign*)ptr)->u32; }
static U64 XXH_read64(const void* ptr) { return ((const unalign*)ptr)->u64; }
#else
/* portable and safe solution. Generally efficient.
* see : http://stackoverflow.com/a/32095106/646947
*/
static U32 XXH_read32(const void* memPtr)
{
U32 val;
ZSTD_memcpy(&val, memPtr, sizeof(val));
return val;
}
static U64 XXH_read64(const void* memPtr)
{
U64 val;
ZSTD_memcpy(&val, memPtr, sizeof(val));
return val;
}
#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */
/* ****************************************
* Compiler-specific Functions and Macros
******************************************/
#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
/* Note : although _rotl exists for minGW (GCC under windows), performance seems poor */
#if defined(_MSC_VER)
# define XXH_rotl32(x,r) _rotl(x,r)
# define XXH_rotl64(x,r) _rotl64(x,r)
#else
#if defined(__ICCARM__)
# include <intrinsics.h>
# define XXH_rotl32(x,r) __ROR(x,(32 - r))
#else
# define XXH_rotl32(x,r) ((x << r) | (x >> (32 - r)))
#endif
# define XXH_rotl64(x,r) ((x << r) | (x >> (64 - r)))
#endif
#if defined(_MSC_VER) /* Visual Studio */
# define XXH_swap32 _byteswap_ulong
# define XXH_swap64 _byteswap_uint64
#elif GCC_VERSION >= 403
# define XXH_swap32 __builtin_bswap32
# define XXH_swap64 __builtin_bswap64
#else
static U32 XXH_swap32 (U32 x)
{
return ((x << 24) & 0xff000000 ) |
((x << 8) & 0x00ff0000 ) |
((x >> 8) & 0x0000ff00 ) |
((x >> 24) & 0x000000ff );
}
static U64 XXH_swap64 (U64 x)
{
return ((x << 56) & 0xff00000000000000ULL) |
((x << 40) & 0x00ff000000000000ULL) |
((x << 24) & 0x0000ff0000000000ULL) |
((x << 8) & 0x000000ff00000000ULL) |
((x >> 8) & 0x00000000ff000000ULL) |
((x >> 24) & 0x0000000000ff0000ULL) |
((x >> 40) & 0x000000000000ff00ULL) |
((x >> 56) & 0x00000000000000ffULL);
}
#endif
/* *************************************
* Architecture Macros
***************************************/
typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess;
/* XXH_CPU_LITTLE_ENDIAN can be defined externally, for example on the compiler command line */
#ifndef XXH_CPU_LITTLE_ENDIAN
static const int g_one = 1;
# define XXH_CPU_LITTLE_ENDIAN (*(const char*)(&g_one))
#endif
/* ***************************
* Memory reads
*****************************/
typedef enum { XXH_aligned, XXH_unaligned } XXH_alignment;
FORCE_INLINE_TEMPLATE U32 XXH_readLE32_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
{
if (align==XXH_unaligned)
return endian==XXH_littleEndian ? XXH_read32(ptr) : XXH_swap32(XXH_read32(ptr));
else
return endian==XXH_littleEndian ? *(const U32*)ptr : XXH_swap32(*(const U32*)ptr);
}
FORCE_INLINE_TEMPLATE U32 XXH_readLE32(const void* ptr, XXH_endianess endian)
{
return XXH_readLE32_align(ptr, endian, XXH_unaligned);
}
static U32 XXH_readBE32(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_swap32(XXH_read32(ptr)) : XXH_read32(ptr);
}
FORCE_INLINE_TEMPLATE U64 XXH_readLE64_align(const void* ptr, XXH_endianess endian, XXH_alignment align)
{
if (align==XXH_unaligned)
return endian==XXH_littleEndian ? XXH_read64(ptr) : XXH_swap64(XXH_read64(ptr));
else
return endian==XXH_littleEndian ? *(const U64*)ptr : XXH_swap64(*(const U64*)ptr);
}
FORCE_INLINE_TEMPLATE U64 XXH_readLE64(const void* ptr, XXH_endianess endian)
{
return XXH_readLE64_align(ptr, endian, XXH_unaligned);
}
static U64 XXH_readBE64(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_swap64(XXH_read64(ptr)) : XXH_read64(ptr);
}
/* *************************************
* Macros
***************************************/
#define XXH_STATIC_ASSERT(c) { enum { XXH_static_assert = 1/(int)(!!(c)) }; } /* use only *after* variable declarations */
/* *************************************
* Constants
***************************************/
static const U32 PRIME32_1 = 2654435761U;
static const U32 PRIME32_2 = 2246822519U;
static const U32 PRIME32_3 = 3266489917U;
static const U32 PRIME32_4 = 668265263U;
static const U32 PRIME32_5 = 374761393U;
static const U64 PRIME64_1 = 11400714785074694791ULL;
static const U64 PRIME64_2 = 14029467366897019727ULL;
static const U64 PRIME64_3 = 1609587929392839161ULL;
static const U64 PRIME64_4 = 9650029242287828579ULL;
static const U64 PRIME64_5 = 2870177450012600261ULL;
XXH_PUBLIC_API unsigned XXH_versionNumber (void) { return XXH_VERSION_NUMBER; }
/* **************************
* Utils
****************************/
XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* restrict dstState, const XXH32_state_t* restrict srcState)
{
ZSTD_memcpy(dstState, srcState, sizeof(*dstState));
}
XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* restrict dstState, const XXH64_state_t* restrict srcState)
{
ZSTD_memcpy(dstState, srcState, sizeof(*dstState));
}
/* ***************************
* Simple Hash Functions
*****************************/
static U32 XXH32_round(U32 seed, U32 input)
{
seed += input * PRIME32_2;
seed = XXH_rotl32(seed, 13);
seed *= PRIME32_1;
return seed;
}
FORCE_INLINE_TEMPLATE U32 XXH32_endian_align(const void* input, size_t len, U32 seed, XXH_endianess endian, XXH_alignment align)
{
const BYTE* p = (const BYTE*)input;
const BYTE* bEnd = p + len;
U32 h32;
#define XXH_get32bits(p) XXH_readLE32_align(p, endian, align)
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
if (p==NULL) {
len=0;
bEnd=p=(const BYTE*)(size_t)16;
}
#endif
if (len>=16) {
const BYTE* const limit = bEnd - 16;
U32 v1 = seed + PRIME32_1 + PRIME32_2;
U32 v2 = seed + PRIME32_2;
U32 v3 = seed + 0;
U32 v4 = seed - PRIME32_1;
do {
v1 = XXH32_round(v1, XXH_get32bits(p)); p+=4;
v2 = XXH32_round(v2, XXH_get32bits(p)); p+=4;
v3 = XXH32_round(v3, XXH_get32bits(p)); p+=4;
v4 = XXH32_round(v4, XXH_get32bits(p)); p+=4;
} while (p<=limit);
h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18);
} else {
h32 = seed + PRIME32_5;
}
h32 += (U32) len;
while (p+4<=bEnd) {
h32 += XXH_get32bits(p) * PRIME32_3;
h32 = XXH_rotl32(h32, 17) * PRIME32_4 ;
p+=4;
}
while (p<bEnd) {
h32 += (*p) * PRIME32_5;
h32 = XXH_rotl32(h32, 11) * PRIME32_1 ;
p++;
}
h32 ^= h32 >> 15;
h32 *= PRIME32_2;
h32 ^= h32 >> 13;
h32 *= PRIME32_3;
h32 ^= h32 >> 16;
return h32;
}
XXH_PUBLIC_API unsigned int XXH32 (const void* input, size_t len, unsigned int seed)
{
#if 0
/* Simple version, good for code maintenance, but unfortunately slow for small inputs */
XXH32_CREATESTATE_STATIC(state);
XXH32_reset(state, seed);
XXH32_update(state, input, len);
return XXH32_digest(state);
#else
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if (XXH_FORCE_ALIGN_CHECK) {
if ((((size_t)input) & 3) == 0) { /* Input is 4-bytes aligned, leverage the speed benefit */
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned);
else
return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned);
} }
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned);
else
return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned);
#endif
}
static U64 XXH64_round(U64 acc, U64 input)
{
acc += input * PRIME64_2;
acc = XXH_rotl64(acc, 31);
acc *= PRIME64_1;
return acc;
}
static U64 XXH64_mergeRound(U64 acc, U64 val)
{
val = XXH64_round(0, val);
acc ^= val;
acc = acc * PRIME64_1 + PRIME64_4;
return acc;
}
FORCE_INLINE_TEMPLATE U64 XXH64_endian_align(const void* input, size_t len, U64 seed, XXH_endianess endian, XXH_alignment align)
{
const BYTE* p = (const BYTE*)input;
const BYTE* const bEnd = p + len;
U64 h64;
#define XXH_get64bits(p) XXH_readLE64_align(p, endian, align)
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
if (p==NULL) {
len=0;
bEnd=p=(const BYTE*)(size_t)32;
}
#endif
if (len>=32) {
const BYTE* const limit = bEnd - 32;
U64 v1 = seed + PRIME64_1 + PRIME64_2;
U64 v2 = seed + PRIME64_2;
U64 v3 = seed + 0;
U64 v4 = seed - PRIME64_1;
do {
v1 = XXH64_round(v1, XXH_get64bits(p)); p+=8;
v2 = XXH64_round(v2, XXH_get64bits(p)); p+=8;
v3 = XXH64_round(v3, XXH_get64bits(p)); p+=8;
v4 = XXH64_round(v4, XXH_get64bits(p)); p+=8;
} while (p<=limit);
h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
h64 = XXH64_mergeRound(h64, v1);
h64 = XXH64_mergeRound(h64, v2);
h64 = XXH64_mergeRound(h64, v3);
h64 = XXH64_mergeRound(h64, v4);
} else {
h64 = seed + PRIME64_5;
}
h64 += (U64) len;
while (p+8<=bEnd) {
U64 const k1 = XXH64_round(0, XXH_get64bits(p));
h64 ^= k1;
h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
p+=8;
}
if (p+4<=bEnd) {
h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1;
h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
p+=4;
}
while (p<bEnd) {
h64 ^= (*p) * PRIME64_5;
h64 = XXH_rotl64(h64, 11) * PRIME64_1;
p++;
}
h64 ^= h64 >> 33;
h64 *= PRIME64_2;
h64 ^= h64 >> 29;
h64 *= PRIME64_3;
h64 ^= h64 >> 32;
return h64;
}
XXH_PUBLIC_API unsigned long long XXH64 (const void* input, size_t len, unsigned long long seed)
{
#if 0
/* Simple version, good for code maintenance, but unfortunately slow for small inputs */
XXH64_CREATESTATE_STATIC(state);
XXH64_reset(state, seed);
XXH64_update(state, input, len);
return XXH64_digest(state);
#else
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if (XXH_FORCE_ALIGN_CHECK) {
if ((((size_t)input) & 7)==0) { /* Input is aligned, let's leverage the speed advantage */
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned);
else
return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned);
} }
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned);
else
return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned);
#endif
}
/* **************************************************
* Advanced Hash Functions
****************************************************/
XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void)
{
return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t));
}
XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr)
{
XXH_free(statePtr);
return XXH_OK;
}
XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void)
{
return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t));
}
XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr)
{
XXH_free(statePtr);
return XXH_OK;
}
/*** Hash feed ***/
XXH_PUBLIC_API XXH_errorcode XXH32_reset(XXH32_state_t* statePtr, unsigned int seed)
{
XXH32_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */
ZSTD_memset(&state, 0, sizeof(state)-4); /* do not write into reserved, for future removal */
state.v1 = seed + PRIME32_1 + PRIME32_2;
state.v2 = seed + PRIME32_2;
state.v3 = seed + 0;
state.v4 = seed - PRIME32_1;
ZSTD_memcpy(statePtr, &state, sizeof(state));
return XXH_OK;
}
XXH_PUBLIC_API XXH_errorcode XXH64_reset(XXH64_state_t* statePtr, unsigned long long seed)
{
XXH64_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */
ZSTD_memset(&state, 0, sizeof(state)-8); /* do not write into reserved, for future removal */
state.v1 = seed + PRIME64_1 + PRIME64_2;
state.v2 = seed + PRIME64_2;
state.v3 = seed + 0;
state.v4 = seed - PRIME64_1;
ZSTD_memcpy(statePtr, &state, sizeof(state));
return XXH_OK;
}
FORCE_INLINE_TEMPLATE XXH_errorcode XXH32_update_endian (XXH32_state_t* state, const void* input, size_t len, XXH_endianess endian)
{
const BYTE* p = (const BYTE*)input;
const BYTE* const bEnd = p + len;
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
if (input==NULL) return XXH_ERROR;
#endif
state->total_len_32 += (unsigned)len;
state->large_len |= (len>=16) | (state->total_len_32>=16);
if (state->memsize + len < 16) { /* fill in tmp buffer */
XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, len);
state->memsize += (unsigned)len;
return XXH_OK;
}
if (state->memsize) { /* some data left from previous update */
XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, 16-state->memsize);
{ const U32* p32 = state->mem32;
state->v1 = XXH32_round(state->v1, XXH_readLE32(p32, endian)); p32++;
state->v2 = XXH32_round(state->v2, XXH_readLE32(p32, endian)); p32++;
state->v3 = XXH32_round(state->v3, XXH_readLE32(p32, endian)); p32++;
state->v4 = XXH32_round(state->v4, XXH_readLE32(p32, endian)); p32++;
}
p += 16-state->memsize;
state->memsize = 0;
}
if (p <= bEnd-16) {
const BYTE* const limit = bEnd - 16;
U32 v1 = state->v1;
U32 v2 = state->v2;
U32 v3 = state->v3;
U32 v4 = state->v4;
do {
v1 = XXH32_round(v1, XXH_readLE32(p, endian)); p+=4;
v2 = XXH32_round(v2, XXH_readLE32(p, endian)); p+=4;
v3 = XXH32_round(v3, XXH_readLE32(p, endian)); p+=4;
v4 = XXH32_round(v4, XXH_readLE32(p, endian)); p+=4;
} while (p<=limit);
state->v1 = v1;
state->v2 = v2;
state->v3 = v3;
state->v4 = v4;
}
if (p < bEnd) {
XXH_memcpy(state->mem32, p, (size_t)(bEnd-p));
state->memsize = (unsigned)(bEnd-p);
}
return XXH_OK;
}
XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* state_in, const void* input, size_t len)
{
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH32_update_endian(state_in, input, len, XXH_littleEndian);
else
return XXH32_update_endian(state_in, input, len, XXH_bigEndian);
}
FORCE_INLINE_TEMPLATE U32 XXH32_digest_endian (const XXH32_state_t* state, XXH_endianess endian)
{
const BYTE * p = (const BYTE*)state->mem32;
const BYTE* const bEnd = (const BYTE*)(state->mem32) + state->memsize;
U32 h32;
if (state->large_len) {
h32 = XXH_rotl32(state->v1, 1) + XXH_rotl32(state->v2, 7) + XXH_rotl32(state->v3, 12) + XXH_rotl32(state->v4, 18);
} else {
h32 = state->v3 /* == seed */ + PRIME32_5;
}
h32 += state->total_len_32;
while (p+4<=bEnd) {
h32 += XXH_readLE32(p, endian) * PRIME32_3;
h32 = XXH_rotl32(h32, 17) * PRIME32_4;
p+=4;
}
while (p<bEnd) {
h32 += (*p) * PRIME32_5;
h32 = XXH_rotl32(h32, 11) * PRIME32_1;
p++;
}
h32 ^= h32 >> 15;
h32 *= PRIME32_2;
h32 ^= h32 >> 13;
h32 *= PRIME32_3;
h32 ^= h32 >> 16;
return h32;
}
XXH_PUBLIC_API unsigned int XXH32_digest (const XXH32_state_t* state_in)
{
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH32_digest_endian(state_in, XXH_littleEndian);
else
return XXH32_digest_endian(state_in, XXH_bigEndian);
}
/* **** XXH64 **** */
FORCE_INLINE_TEMPLATE XXH_errorcode XXH64_update_endian (XXH64_state_t* state, const void* input, size_t len, XXH_endianess endian)
{
const BYTE* p = (const BYTE*)input;
const BYTE* const bEnd = p + len;
#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
if (input==NULL) return XXH_ERROR;
#endif
state->total_len += len;
if (state->memsize + len < 32) { /* fill in tmp buffer */
if (input != NULL) {
XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, len);
}
state->memsize += (U32)len;
return XXH_OK;
}
if (state->memsize) { /* tmp buffer is full */
XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, 32-state->memsize);
state->v1 = XXH64_round(state->v1, XXH_readLE64(state->mem64+0, endian));
state->v2 = XXH64_round(state->v2, XXH_readLE64(state->mem64+1, endian));
state->v3 = XXH64_round(state->v3, XXH_readLE64(state->mem64+2, endian));
state->v4 = XXH64_round(state->v4, XXH_readLE64(state->mem64+3, endian));
p += 32-state->memsize;
state->memsize = 0;
}
if (p+32 <= bEnd) {
const BYTE* const limit = bEnd - 32;
U64 v1 = state->v1;
U64 v2 = state->v2;
U64 v3 = state->v3;
U64 v4 = state->v4;
do {
v1 = XXH64_round(v1, XXH_readLE64(p, endian)); p+=8;
v2 = XXH64_round(v2, XXH_readLE64(p, endian)); p+=8;
v3 = XXH64_round(v3, XXH_readLE64(p, endian)); p+=8;
v4 = XXH64_round(v4, XXH_readLE64(p, endian)); p+=8;
} while (p<=limit);
state->v1 = v1;
state->v2 = v2;
state->v3 = v3;
state->v4 = v4;
}
if (p < bEnd) {
XXH_memcpy(state->mem64, p, (size_t)(bEnd-p));
state->memsize = (unsigned)(bEnd-p);
}
return XXH_OK;
}
XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* state_in, const void* input, size_t len)
{
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH64_update_endian(state_in, input, len, XXH_littleEndian);
else
return XXH64_update_endian(state_in, input, len, XXH_bigEndian);
}
FORCE_INLINE_TEMPLATE U64 XXH64_digest_endian (const XXH64_state_t* state, XXH_endianess endian)
{
const BYTE * p = (const BYTE*)state->mem64;
const BYTE* const bEnd = (const BYTE*)state->mem64 + state->memsize;
U64 h64;
if (state->total_len >= 32) {
U64 const v1 = state->v1;
U64 const v2 = state->v2;
U64 const v3 = state->v3;
U64 const v4 = state->v4;
h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
h64 = XXH64_mergeRound(h64, v1);
h64 = XXH64_mergeRound(h64, v2);
h64 = XXH64_mergeRound(h64, v3);
h64 = XXH64_mergeRound(h64, v4);
} else {
h64 = state->v3 + PRIME64_5;
}
h64 += (U64) state->total_len;
while (p+8<=bEnd) {
U64 const k1 = XXH64_round(0, XXH_readLE64(p, endian));
h64 ^= k1;
h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
p+=8;
}
if (p+4<=bEnd) {
h64 ^= (U64)(XXH_readLE32(p, endian)) * PRIME64_1;
h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
p+=4;
}
while (p<bEnd) {
h64 ^= (*p) * PRIME64_5;
h64 = XXH_rotl64(h64, 11) * PRIME64_1;
p++;
}
h64 ^= h64 >> 33;
h64 *= PRIME64_2;
h64 ^= h64 >> 29;
h64 *= PRIME64_3;
h64 ^= h64 >> 32;
return h64;
}
XXH_PUBLIC_API unsigned long long XXH64_digest (const XXH64_state_t* state_in)
{
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
return XXH64_digest_endian(state_in, XXH_littleEndian);
else
return XXH64_digest_endian(state_in, XXH_bigEndian);
}
/* **************************
* Canonical representation
****************************/
/*! Default XXH result types are basic unsigned 32 and 64 bits.
* The canonical representation follows human-readable write convention, aka big-endian (large digits first).
* These functions allow transformation of hash result into and from its canonical format.
* This way, hash values can be written into a file or buffer, and remain comparable across different systems and programs.
*/
XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash)
{
XXH_STATIC_ASSERT(sizeof(XXH32_canonical_t) == sizeof(XXH32_hash_t));
if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap32(hash);
ZSTD_memcpy(dst, &hash, sizeof(*dst));
}
XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash)
{
XXH_STATIC_ASSERT(sizeof(XXH64_canonical_t) == sizeof(XXH64_hash_t));
if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap64(hash);
ZSTD_memcpy(dst, &hash, sizeof(*dst));
}
XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src)
{
return XXH_readBE32(src);
}
XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src)
{
return XXH_readBE64(src);
}
lib/common/xxhash.h
+5573 -172
View File
@@ -1,20 +1,36 @@
/*
* xxHash - Extremely Fast Hash algorithm
* Header File
* Copyright (c) Yann Collet, Facebook, Inc.
* xxHash - Fast Hash algorithm
* Copyright (c) Yann Collet, Facebook, Inc.
*
* You can contact the author at :
* - xxHash homepage: http://www.xxhash.com
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*
* You can contact the author at :
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* Notice extracted from xxHash homepage :
xxHash is an extremely fast Hash algorithm, running at RAM speed limits.
#ifndef XXH_NO_XXH3
# define XXH_NO_XXH3
#endif
#ifndef XXH_NAMESPACE
# define XXH_NAMESPACE ZSTD_
#endif
/*!
* @mainpage xxHash
*
* @file xxhash.h
* xxHash prototypes and implementation
*/
/* TODO: update */
/* Notice extracted from xxHash homepage:
xxHash is an extremely fast hash algorithm, running at RAM speed limits.
It also successfully passes all tests from the SMHasher suite.
Comparison (single thread, Windows Seven 32 bits, using SMHasher on a Core 2 Duo @3GHz)
@@ -22,7 +38,7 @@ Comparison (single thread, Windows Seven 32 bits, using SMHasher on a Core 2 Duo
Name Speed Q.Score Author
xxHash 5.4 GB/s 10
CrapWow 3.2 GB/s 2 Andrew
MumurHash 3a 2.7 GB/s 10 Austin Appleby
MurmurHash 3a 2.7 GB/s 10 Austin Appleby
SpookyHash 2.0 GB/s 10 Bob Jenkins
SBox 1.4 GB/s 9 Bret Mulvey
Lookup3 1.2 GB/s 9 Bob Jenkins
@@ -37,8 +53,13 @@ Q.Score is a measure of quality of the hash function.
It depends on successfully passing SMHasher test set.
10 is a perfect score.
A 64-bits version, named XXH64, is available since r35.
It offers much better speed, but for 64-bits applications only.
Note: SMHasher's CRC32 implementation is not the fastest one.
Other speed-oriented implementations can be faster,
especially in combination with PCLMUL instruction:
https://fastcompression.blogspot.com/2019/03/presenting-xxh3.html?showComment=1552696407071#c3490092340461170735
A 64-bit version, named XXH64, is available since r35.
It offers much better speed, but for 64-bit applications only.
Name Speed on 64 bits Speed on 32 bits
XXH64 13.8 GB/s 1.9 GB/s
XXH32 6.8 GB/s 6.0 GB/s
@@ -48,33 +69,34 @@ XXH32 6.8 GB/s 6.0 GB/s
extern "C" {
#endif
#ifndef XXHASH_H_5627135585666179
#define XXHASH_H_5627135585666179 1
/* ****************************
* Definitions
******************************/
#include "zstd_deps.h"
typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode;
/* ****************************
* API modifier
******************************/
/** XXH_PRIVATE_API
* This is useful if you want to include xxhash functions in `static` mode
* in order to inline them, and remove their symbol from the public list.
* Methodology :
* #define XXH_PRIVATE_API
* #include "xxhash.h"
* `xxhash.c` is automatically included.
* It's not useful to compile and link it as a separate module anymore.
*/
#ifdef XXH_PRIVATE_API
# ifndef XXH_STATIC_LINKING_ONLY
# define XXH_STATIC_LINKING_ONLY
# endif
* INLINE mode
******************************/
/*!
* XXH_INLINE_ALL (and XXH_PRIVATE_API)
* Use these build macros to inline xxhash into the target unit.
* Inlining improves performance on small inputs, especially when the length is
* expressed as a compile-time constant:
*
* https://fastcompression.blogspot.com/2018/03/xxhash-for-small-keys-impressive-power.html
*
* It also keeps xxHash symbols private to the unit, so they are not exported.
*
* Usage:
* #define XXH_INLINE_ALL
* #include "xxhash.h"
*
* Do not compile and link xxhash.o as a separate object, as it is not useful.
*/
#if (defined(XXH_INLINE_ALL) || defined(XXH_PRIVATE_API)) \
&& !defined(XXH_INLINE_ALL_31684351384)
/* this section should be traversed only once */
# define XXH_INLINE_ALL_31684351384
/* give access to the advanced API, required to compile implementations */
# undef XXH_STATIC_LINKING_ONLY /* avoid macro redef */
# define XXH_STATIC_LINKING_ONLY
/* make all functions private */
# undef XXH_PUBLIC_API
# if defined(__GNUC__)
# define XXH_PUBLIC_API static __inline __attribute__((unused))
# elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
@@ -82,45 +104,205 @@ typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode;
# elif defined(_MSC_VER)
# define XXH_PUBLIC_API static __inline
# else
# define XXH_PUBLIC_API static /* this version may generate warnings for unused static functions; disable the relevant warning */
/* note: this version may generate warnings for unused static functions */
# define XXH_PUBLIC_API static
# endif
#else
# define XXH_PUBLIC_API /* do nothing */
#endif /* XXH_PRIVATE_API */
/*!XXH_NAMESPACE, aka Namespace Emulation :
/*
* This part deals with the special case where a unit wants to inline xxHash,
* but "xxhash.h" has previously been included without XXH_INLINE_ALL,
* such as part of some previously included *.h header file.
* Without further action, the new include would just be ignored,
* and functions would effectively _not_ be inlined (silent failure).
* The following macros solve this situation by prefixing all inlined names,
* avoiding naming collision with previous inclusions.
*/
/* Before that, we unconditionally #undef all symbols,
* in case they were already defined with XXH_NAMESPACE.
* They will then be redefined for XXH_INLINE_ALL
*/
# undef XXH_versionNumber
/* XXH32 */
# undef XXH32
# undef XXH32_createState
# undef XXH32_freeState
# undef XXH32_reset
# undef XXH32_update
# undef XXH32_digest
# undef XXH32_copyState
# undef XXH32_canonicalFromHash
# undef XXH32_hashFromCanonical
/* XXH64 */
# undef XXH64
# undef XXH64_createState
# undef XXH64_freeState
# undef XXH64_reset
# undef XXH64_update
# undef XXH64_digest
# undef XXH64_copyState
# undef XXH64_canonicalFromHash
# undef XXH64_hashFromCanonical
/* XXH3_64bits */
# undef XXH3_64bits
# undef XXH3_64bits_withSecret
# undef XXH3_64bits_withSeed
# undef XXH3_64bits_withSecretandSeed
# undef XXH3_createState
# undef XXH3_freeState
# undef XXH3_copyState
# undef XXH3_64bits_reset
# undef XXH3_64bits_reset_withSeed
# undef XXH3_64bits_reset_withSecret
# undef XXH3_64bits_update
# undef XXH3_64bits_digest
# undef XXH3_generateSecret
/* XXH3_128bits */
# undef XXH128
# undef XXH3_128bits
# undef XXH3_128bits_withSeed
# undef XXH3_128bits_withSecret
# undef XXH3_128bits_reset
# undef XXH3_128bits_reset_withSeed
# undef XXH3_128bits_reset_withSecret
# undef XXH3_128bits_reset_withSecretandSeed
# undef XXH3_128bits_update
# undef XXH3_128bits_digest
# undef XXH128_isEqual
# undef XXH128_cmp
# undef XXH128_canonicalFromHash
# undef XXH128_hashFromCanonical
/* Finally, free the namespace itself */
# undef XXH_NAMESPACE
If you want to include _and expose_ xxHash functions from within your own library,
but also want to avoid symbol collisions with another library which also includes xxHash,
/* employ the namespace for XXH_INLINE_ALL */
# define XXH_NAMESPACE XXH_INLINE_
/*
* Some identifiers (enums, type names) are not symbols,
* but they must nonetheless be renamed to avoid redeclaration.
* Alternative solution: do not redeclare them.
* However, this requires some #ifdefs, and has a more dispersed impact.
* Meanwhile, renaming can be achieved in a single place.
*/
# define XXH_IPREF(Id) XXH_NAMESPACE ## Id
# define XXH_OK XXH_IPREF(XXH_OK)
# define XXH_ERROR XXH_IPREF(XXH_ERROR)
# define XXH_errorcode XXH_IPREF(XXH_errorcode)
# define XXH32_canonical_t XXH_IPREF(XXH32_canonical_t)
# define XXH64_canonical_t XXH_IPREF(XXH64_canonical_t)
# define XXH128_canonical_t XXH_IPREF(XXH128_canonical_t)
# define XXH32_state_s XXH_IPREF(XXH32_state_s)
# define XXH32_state_t XXH_IPREF(XXH32_state_t)
# define XXH64_state_s XXH_IPREF(XXH64_state_s)
# define XXH64_state_t XXH_IPREF(XXH64_state_t)
# define XXH3_state_s XXH_IPREF(XXH3_state_s)
# define XXH3_state_t XXH_IPREF(XXH3_state_t)
# define XXH128_hash_t XXH_IPREF(XXH128_hash_t)
/* Ensure the header is parsed again, even if it was previously included */
# undef XXHASH_H_5627135585666179
# undef XXHASH_H_STATIC_13879238742
#endif /* XXH_INLINE_ALL || XXH_PRIVATE_API */
you can use XXH_NAMESPACE, to automatically prefix any public symbol from xxhash library
with the value of XXH_NAMESPACE (so avoid to keep it NULL and avoid numeric values).
Note that no change is required within the calling program as long as it includes `xxhash.h` :
regular symbol name will be automatically translated by this header.
*/
/* ****************************************************************
* Stable API
*****************************************************************/
#ifndef XXHASH_H_5627135585666179
#define XXHASH_H_5627135585666179 1
/*!
* @defgroup public Public API
* Contains details on the public xxHash functions.
* @{
*/
/* specific declaration modes for Windows */
#if !defined(XXH_INLINE_ALL) && !defined(XXH_PRIVATE_API)
# if defined(WIN32) && defined(_MSC_VER) && (defined(XXH_IMPORT) || defined(XXH_EXPORT))
# ifdef XXH_EXPORT
# define XXH_PUBLIC_API __declspec(dllexport)
# elif XXH_IMPORT
# define XXH_PUBLIC_API __declspec(dllimport)
# endif
# else
# define XXH_PUBLIC_API /* do nothing */
# endif
#endif
#ifdef XXH_DOXYGEN
/*!
* @brief Emulate a namespace by transparently prefixing all symbols.
*
* If you want to include _and expose_ xxHash functions from within your own
* library, but also want to avoid symbol collisions with other libraries which
* may also include xxHash, you can use XXH_NAMESPACE to automatically prefix
* any public symbol from xxhash library with the value of XXH_NAMESPACE
* (therefore, avoid empty or numeric values).
*
* Note that no change is required within the calling program as long as it
* includes `xxhash.h`: Regular symbol names will be automatically translated
* by this header.
*/
# define XXH_NAMESPACE /* YOUR NAME HERE */
# undef XXH_NAMESPACE
#endif
#ifdef XXH_NAMESPACE
# define XXH_CAT(A,B) A##B
# define XXH_NAME2(A,B) XXH_CAT(A,B)
# define XXH32 XXH_NAME2(XXH_NAMESPACE, XXH32)
# define XXH64 XXH_NAME2(XXH_NAMESPACE, XXH64)
# define XXH_versionNumber XXH_NAME2(XXH_NAMESPACE, XXH_versionNumber)
/* XXH32 */
# define XXH32 XXH_NAME2(XXH_NAMESPACE, XXH32)
# define XXH32_createState XXH_NAME2(XXH_NAMESPACE, XXH32_createState)
# define XXH64_createState XXH_NAME2(XXH_NAMESPACE, XXH64_createState)
# define XXH32_freeState XXH_NAME2(XXH_NAMESPACE, XXH32_freeState)
# define XXH64_freeState XXH_NAME2(XXH_NAMESPACE, XXH64_freeState)
# define XXH32_reset XXH_NAME2(XXH_NAMESPACE, XXH32_reset)
# define XXH64_reset XXH_NAME2(XXH_NAMESPACE, XXH64_reset)
# define XXH32_update XXH_NAME2(XXH_NAMESPACE, XXH32_update)
# define XXH64_update XXH_NAME2(XXH_NAMESPACE, XXH64_update)
# define XXH32_digest XXH_NAME2(XXH_NAMESPACE, XXH32_digest)
# define XXH64_digest XXH_NAME2(XXH_NAMESPACE, XXH64_digest)
# define XXH32_copyState XXH_NAME2(XXH_NAMESPACE, XXH32_copyState)
# define XXH64_copyState XXH_NAME2(XXH_NAMESPACE, XXH64_copyState)
# define XXH32_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH32_canonicalFromHash)
# define XXH64_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH64_canonicalFromHash)
# define XXH32_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH32_hashFromCanonical)
/* XXH64 */
# define XXH64 XXH_NAME2(XXH_NAMESPACE, XXH64)
# define XXH64_createState XXH_NAME2(XXH_NAMESPACE, XXH64_createState)
# define XXH64_freeState XXH_NAME2(XXH_NAMESPACE, XXH64_freeState)
# define XXH64_reset XXH_NAME2(XXH_NAMESPACE, XXH64_reset)
# define XXH64_update XXH_NAME2(XXH_NAMESPACE, XXH64_update)
# define XXH64_digest XXH_NAME2(XXH_NAMESPACE, XXH64_digest)
# define XXH64_copyState XXH_NAME2(XXH_NAMESPACE, XXH64_copyState)
# define XXH64_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH64_canonicalFromHash)
# define XXH64_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH64_hashFromCanonical)
/* XXH3_64bits */
# define XXH3_64bits XXH_NAME2(XXH_NAMESPACE, XXH3_64bits)
# define XXH3_64bits_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_withSecret)
# define XXH3_64bits_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_withSeed)
# define XXH3_64bits_withSecretandSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_withSecretandSeed)
# define XXH3_createState XXH_NAME2(XXH_NAMESPACE, XXH3_createState)
# define XXH3_freeState XXH_NAME2(XXH_NAMESPACE, XXH3_freeState)
# define XXH3_copyState XXH_NAME2(XXH_NAMESPACE, XXH3_copyState)
# define XXH3_64bits_reset XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset)
# define XXH3_64bits_reset_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset_withSeed)
# define XXH3_64bits_reset_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset_withSecret)
# define XXH3_64bits_reset_withSecretandSeed XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_reset_withSecretandSeed)
# define XXH3_64bits_update XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_update)
# define XXH3_64bits_digest XXH_NAME2(XXH_NAMESPACE, XXH3_64bits_digest)
# define XXH3_generateSecret XXH_NAME2(XXH_NAMESPACE, XXH3_generateSecret)
# define XXH3_generateSecret_fromSeed XXH_NAME2(XXH_NAMESPACE, XXH3_generateSecret_fromSeed)
/* XXH3_128bits */
# define XXH128 XXH_NAME2(XXH_NAMESPACE, XXH128)
# define XXH3_128bits XXH_NAME2(XXH_NAMESPACE, XXH3_128bits)
# define XXH3_128bits_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_withSeed)
# define XXH3_128bits_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_withSecret)
# define XXH3_128bits_withSecretandSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_withSecretandSeed)
# define XXH3_128bits_reset XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset)
# define XXH3_128bits_reset_withSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset_withSeed)
# define XXH3_128bits_reset_withSecret XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset_withSecret)
# define XXH3_128bits_reset_withSecretandSeed XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_reset_withSecretandSeed)
# define XXH3_128bits_update XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_update)
# define XXH3_128bits_digest XXH_NAME2(XXH_NAMESPACE, XXH3_128bits_digest)
# define XXH128_isEqual XXH_NAME2(XXH_NAMESPACE, XXH128_isEqual)
# define XXH128_cmp XXH_NAME2(XXH_NAMESPACE, XXH128_cmp)
# define XXH128_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH128_canonicalFromHash)
# define XXH128_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH128_hashFromCanonical)
#endif
@@ -128,156 +310,5375 @@ regular symbol name will be automatically translated by this header.
* Version
***************************************/
#define XXH_VERSION_MAJOR 0
#define XXH_VERSION_MINOR 6
#define XXH_VERSION_RELEASE 2
#define XXH_VERSION_MINOR 8
#define XXH_VERSION_RELEASE 1
#define XXH_VERSION_NUMBER (XXH_VERSION_MAJOR *100*100 + XXH_VERSION_MINOR *100 + XXH_VERSION_RELEASE)
/*!
* @brief Obtains the xxHash version.
*
* This is mostly useful when xxHash is compiled as a shared library,
* since the returned value comes from the library, as opposed to header file.
*
* @return `XXH_VERSION_NUMBER` of the invoked library.
*/
XXH_PUBLIC_API unsigned XXH_versionNumber (void);
/* ****************************
* Simple Hash Functions
* Common basic types
******************************/
typedef unsigned int XXH32_hash_t;
typedef unsigned long long XXH64_hash_t;
#include <stddef.h> /* size_t */
typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode;
XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t length, unsigned int seed);
XXH_PUBLIC_API XXH64_hash_t XXH64 (const void* input, size_t length, unsigned long long seed);
/*-**********************************************************************
* 32-bit hash
************************************************************************/
#if defined(XXH_DOXYGEN) /* Don't show <stdint.h> include */
/*!
* @brief An unsigned 32-bit integer.
*
* Not necessarily defined to `uint32_t` but functionally equivalent.
*/
typedef uint32_t XXH32_hash_t;
#elif !defined (__VMS) \
&& (defined (__cplusplus) \
|| (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
# include <stdint.h>
typedef uint32_t XXH32_hash_t;
#else
# include <limits.h>
# if UINT_MAX == 0xFFFFFFFFUL
typedef unsigned int XXH32_hash_t;
# else
# if ULONG_MAX == 0xFFFFFFFFUL
typedef unsigned long XXH32_hash_t;
# else
# error "unsupported platform: need a 32-bit type"
# endif
# endif
#endif
/*!
XXH32() :
Calculate the 32-bits hash of sequence "length" bytes stored at memory address "input".
The memory between input & input+length must be valid (allocated and read-accessible).
"seed" can be used to alter the result predictably.
Speed on Core 2 Duo @ 3 GHz (single thread, SMHasher benchmark) : 5.4 GB/s
XXH64() :
Calculate the 64-bits hash of sequence of length "len" stored at memory address "input".
"seed" can be used to alter the result predictably.
This function runs 2x faster on 64-bits systems, but slower on 32-bits systems (see benchmark).
*/
* @}
*
* @defgroup xxh32_family XXH32 family
* @ingroup public
* Contains functions used in the classic 32-bit xxHash algorithm.
*
* @note
* XXH32 is useful for older platforms, with no or poor 64-bit performance.
* Note that @ref xxh3_family provides competitive speed
* for both 32-bit and 64-bit systems, and offers true 64/128 bit hash results.
*
* @see @ref xxh64_family, @ref xxh3_family : Other xxHash families
* @see @ref xxh32_impl for implementation details
* @{
*/
/*!
* @brief Calculates the 32-bit hash of @p input using xxHash32.
*
* Speed on Core 2 Duo @ 3 GHz (single thread, SMHasher benchmark): 5.4 GB/s
*
* @param input The block of data to be hashed, at least @p length bytes in size.
* @param length The length of @p input, in bytes.
* @param seed The 32-bit seed to alter the hash's output predictably.
*
* @pre
* The memory between @p input and @p input + @p length must be valid,
* readable, contiguous memory. However, if @p length is `0`, @p input may be
* `NULL`. In C++, this also must be *TriviallyCopyable*.
*
* @return The calculated 32-bit hash value.
*
* @see
* XXH64(), XXH3_64bits_withSeed(), XXH3_128bits_withSeed(), XXH128():
* Direct equivalents for the other variants of xxHash.
* @see
* XXH32_createState(), XXH32_update(), XXH32_digest(): Streaming version.
*/
XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t length, XXH32_hash_t seed);
/* ****************************
* Streaming Hash Functions
******************************/
typedef struct XXH32_state_s XXH32_state_t; /* incomplete type */
typedef struct XXH64_state_s XXH64_state_t; /* incomplete type */
/*!
* Streaming functions generate the xxHash value from an incremental input.
* This method is slower than single-call functions, due to state management.
* For small inputs, prefer `XXH32()` and `XXH64()`, which are better optimized.
*
* An XXH state must first be allocated using `XXH*_createState()`.
*
* Start a new hash by initializing the state with a seed using `XXH*_reset()`.
*
* Then, feed the hash state by calling `XXH*_update()` as many times as necessary.
*
* The function returns an error code, with 0 meaning OK, and any other value
* meaning there is an error.
*
* Finally, a hash value can be produced anytime, by using `XXH*_digest()`.
* This function returns the nn-bits hash as an int or long long.
*
* It's still possible to continue inserting input into the hash state after a
* digest, and generate new hash values later on by invoking `XXH*_digest()`.
*
* When done, release the state using `XXH*_freeState()`.
*
* Example code for incrementally hashing a file:
* @code{.c}
* #include <stdio.h>
* #include <xxhash.h>
* #define BUFFER_SIZE 256
*
* // Note: XXH64 and XXH3 use the same interface.
* XXH32_hash_t
* hashFile(FILE* stream)
* {
* XXH32_state_t* state;
* unsigned char buf[BUFFER_SIZE];
* size_t amt;
* XXH32_hash_t hash;
*
* state = XXH32_createState(); // Create a state
* assert(state != NULL); // Error check here
* XXH32_reset(state, 0xbaad5eed); // Reset state with our seed
* while ((amt = fread(buf, 1, sizeof(buf), stream)) != 0) {
* XXH32_update(state, buf, amt); // Hash the file in chunks
* }
* hash = XXH32_digest(state); // Finalize the hash
* XXH32_freeState(state); // Clean up
* return hash;
* }
* @endcode
*/
/*! State allocation, compatible with dynamic libraries */
/*!
* @typedef struct XXH32_state_s XXH32_state_t
* @brief The opaque state struct for the XXH32 streaming API.
*
* @see XXH32_state_s for details.
*/
typedef struct XXH32_state_s XXH32_state_t;
/*!
* @brief Allocates an @ref XXH32_state_t.
*
* Must be freed with XXH32_freeState().
* @return An allocated XXH32_state_t on success, `NULL` on failure.
*/
XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void);
/*!
* @brief Frees an @ref XXH32_state_t.
*
* Must be allocated with XXH32_createState().
* @param statePtr A pointer to an @ref XXH32_state_t allocated with @ref XXH32_createState().
* @return XXH_OK.
*/
XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr);
/*!
* @brief Copies one @ref XXH32_state_t to another.
*
* @param dst_state The state to copy to.
* @param src_state The state to copy from.
* @pre
* @p dst_state and @p src_state must not be `NULL` and must not overlap.
*/
XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* dst_state, const XXH32_state_t* src_state);
XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void);
XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr);
/*!
* @brief Resets an @ref XXH32_state_t to begin a new hash.
*
* This function resets and seeds a state. Call it before @ref XXH32_update().
*
* @param statePtr The state struct to reset.
* @param seed The 32-bit seed to alter the hash result predictably.
*
* @pre
* @p statePtr must not be `NULL`.
*
* @return @ref XXH_OK on success, @ref XXH_ERROR on failure.
*/
XXH_PUBLIC_API XXH_errorcode XXH32_reset (XXH32_state_t* statePtr, XXH32_hash_t seed);
/* hash streaming */
XXH_PUBLIC_API XXH_errorcode XXH32_reset (XXH32_state_t* statePtr, unsigned int seed);
/*!
* @brief Consumes a block of @p input to an @ref XXH32_state_t.
*
* Call this to incrementally consume blocks of data.
*
* @param statePtr The state struct to update.
* @param input The block of data to be hashed, at least @p length bytes in size.
* @param length The length of @p input, in bytes.
*
* @pre
* @p statePtr must not be `NULL`.
* @pre
* The memory between @p input and @p input + @p length must be valid,
* readable, contiguous memory. However, if @p length is `0`, @p input may be
* `NULL`. In C++, this also must be *TriviallyCopyable*.
*
* @return @ref XXH_OK on success, @ref XXH_ERROR on failure.
*/
XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* statePtr, const void* input, size_t length);
/*!
* @brief Returns the calculated hash value from an @ref XXH32_state_t.
*
* @note
* Calling XXH32_digest() will not affect @p statePtr, so you can update,
* digest, and update again.
*
* @param statePtr The state struct to calculate the hash from.
*
* @pre
* @p statePtr must not be `NULL`.
*
* @return The calculated xxHash32 value from that state.
*/
XXH_PUBLIC_API XXH32_hash_t XXH32_digest (const XXH32_state_t* statePtr);
XXH_PUBLIC_API XXH_errorcode XXH64_reset (XXH64_state_t* statePtr, unsigned long long seed);
/******* Canonical representation *******/
/*
* The default return values from XXH functions are unsigned 32 and 64 bit
* integers.
* This the simplest and fastest format for further post-processing.
*
* However, this leaves open the question of what is the order on the byte level,
* since little and big endian conventions will store the same number differently.
*
* The canonical representation settles this issue by mandating big-endian
* convention, the same convention as human-readable numbers (large digits first).
*
* When writing hash values to storage, sending them over a network, or printing
* them, it's highly recommended to use the canonical representation to ensure
* portability across a wider range of systems, present and future.
*
* The following functions allow transformation of hash values to and from
* canonical format.
*/
/*!
* @brief Canonical (big endian) representation of @ref XXH32_hash_t.
*/
typedef struct {
unsigned char digest[4]; /*!< Hash bytes, big endian */
} XXH32_canonical_t;
/*!
* @brief Converts an @ref XXH32_hash_t to a big endian @ref XXH32_canonical_t.
*
* @param dst The @ref XXH32_canonical_t pointer to be stored to.
* @param hash The @ref XXH32_hash_t to be converted.
*
* @pre
* @p dst must not be `NULL`.
*/
XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash);
/*!
* @brief Converts an @ref XXH32_canonical_t to a native @ref XXH32_hash_t.
*
* @param src The @ref XXH32_canonical_t to convert.
*
* @pre
* @p src must not be `NULL`.
*
* @return The converted hash.
*/
XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src);
#ifdef __has_attribute
# define XXH_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
# define XXH_HAS_ATTRIBUTE(x) 0
#endif
/* C-language Attributes are added in C23. */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ > 201710L) && defined(__has_c_attribute)
# define XXH_HAS_C_ATTRIBUTE(x) __has_c_attribute(x)
#else
# define XXH_HAS_C_ATTRIBUTE(x) 0
#endif
#if defined(__cplusplus) && defined(__has_cpp_attribute)
# define XXH_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
#else
# define XXH_HAS_CPP_ATTRIBUTE(x) 0
#endif
/*
Define XXH_FALLTHROUGH macro for annotating switch case with the 'fallthrough' attribute
introduced in CPP17 and C23.
CPP17 : https://en.cppreference.com/w/cpp/language/attributes/fallthrough
C23 : https://en.cppreference.com/w/c/language/attributes/fallthrough
*/
#if XXH_HAS_C_ATTRIBUTE(x)
# define XXH_FALLTHROUGH [[fallthrough]]
#elif XXH_HAS_CPP_ATTRIBUTE(x)
# define XXH_FALLTHROUGH [[fallthrough]]
#elif XXH_HAS_ATTRIBUTE(__fallthrough__)
# define XXH_FALLTHROUGH __attribute__ ((fallthrough))
#else
# define XXH_FALLTHROUGH
#endif
/*!
* @}
* @ingroup public
* @{
*/
#ifndef XXH_NO_LONG_LONG
/*-**********************************************************************
* 64-bit hash
************************************************************************/
#if defined(XXH_DOXYGEN) /* don't include <stdint.h> */
/*!
* @brief An unsigned 64-bit integer.
*
* Not necessarily defined to `uint64_t` but functionally equivalent.
*/
typedef uint64_t XXH64_hash_t;
#elif !defined (__VMS) \
&& (defined (__cplusplus) \
|| (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
# include <stdint.h>
typedef uint64_t XXH64_hash_t;
#else
# include <limits.h>
# if defined(__LP64__) && ULONG_MAX == 0xFFFFFFFFFFFFFFFFULL
/* LP64 ABI says uint64_t is unsigned long */
typedef unsigned long XXH64_hash_t;
# else
/* the following type must have a width of 64-bit */
typedef unsigned long long XXH64_hash_t;
# endif
#endif
/*!
* @}
*
* @defgroup xxh64_family XXH64 family
* @ingroup public
* @{
* Contains functions used in the classic 64-bit xxHash algorithm.
*
* @note
* XXH3 provides competitive speed for both 32-bit and 64-bit systems,
* and offers true 64/128 bit hash results.
* It provides better speed for systems with vector processing capabilities.
*/
/*!
* @brief Calculates the 64-bit hash of @p input using xxHash64.
*
* This function usually runs faster on 64-bit systems, but slower on 32-bit
* systems (see benchmark).
*
* @param input The block of data to be hashed, at least @p length bytes in size.
* @param length The length of @p input, in bytes.
* @param seed The 64-bit seed to alter the hash's output predictably.
*
* @pre
* The memory between @p input and @p input + @p length must be valid,
* readable, contiguous memory. However, if @p length is `0`, @p input may be
* `NULL`. In C++, this also must be *TriviallyCopyable*.
*
* @return The calculated 64-bit hash.
*
* @see
* XXH32(), XXH3_64bits_withSeed(), XXH3_128bits_withSeed(), XXH128():
* Direct equivalents for the other variants of xxHash.
* @see
* XXH64_createState(), XXH64_update(), XXH64_digest(): Streaming version.
*/
XXH_PUBLIC_API XXH64_hash_t XXH64(const void* input, size_t length, XXH64_hash_t seed);
/******* Streaming *******/
/*!
* @brief The opaque state struct for the XXH64 streaming API.
*
* @see XXH64_state_s for details.
*/
typedef struct XXH64_state_s XXH64_state_t; /* incomplete type */
XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void);
XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr);
XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* dst_state, const XXH64_state_t* src_state);
XXH_PUBLIC_API XXH_errorcode XXH64_reset (XXH64_state_t* statePtr, XXH64_hash_t seed);
XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* statePtr, const void* input, size_t length);
XXH_PUBLIC_API XXH64_hash_t XXH64_digest (const XXH64_state_t* statePtr);
/*
These functions generate the xxHash of an input provided in multiple segments.
Note that, for small input, they are slower than single-call functions, due to state management.
For small input, prefer `XXH32()` and `XXH64()` .
XXH state must first be allocated, using XXH*_createState() .
Start a new hash by initializing state with a seed, using XXH*_reset().
Then, feed the hash state by calling XXH*_update() as many times as necessary.
Obviously, input must be allocated and read accessible.
The function returns an error code, with 0 meaning OK, and any other value meaning there is an error.
Finally, a hash value can be produced anytime, by using XXH*_digest().
This function returns the nn-bits hash as an int or long long.
It's still possible to continue inserting input into the hash state after a digest,
and generate some new hashes later on, by calling again XXH*_digest().
When done, free XXH state space if it was allocated dynamically.
*/
/* **************************
* Utils
****************************/
#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) /* ! C99 */
# define restrict /* disable restrict */
#endif
XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* restrict dst_state, const XXH32_state_t* restrict src_state);
XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* restrict dst_state, const XXH64_state_t* restrict src_state);
/* **************************
* Canonical representation
****************************/
/* Default result type for XXH functions are primitive unsigned 32 and 64 bits.
* The canonical representation uses human-readable write convention, aka big-endian (large digits first).
* These functions allow transformation of hash result into and from its canonical format.
* This way, hash values can be written into a file / memory, and remain comparable on different systems and programs.
*/
typedef struct { unsigned char digest[4]; } XXH32_canonical_t;
typedef struct { unsigned char digest[8]; } XXH64_canonical_t;
XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash);
/******* Canonical representation *******/
typedef struct { unsigned char digest[sizeof(XXH64_hash_t)]; } XXH64_canonical_t;
XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash);
XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src);
XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src);
#ifndef XXH_NO_XXH3
/*!
* @}
* ************************************************************************
* @defgroup xxh3_family XXH3 family
* @ingroup public
* @{
*
* XXH3 is a more recent hash algorithm featuring:
* - Improved speed for both small and large inputs
* - True 64-bit and 128-bit outputs
* - SIMD acceleration
* - Improved 32-bit viability
*
* Speed analysis methodology is explained here:
*
* https://fastcompression.blogspot.com/2019/03/presenting-xxh3.html
*
* Compared to XXH64, expect XXH3 to run approximately
* ~2x faster on large inputs and >3x faster on small ones,
* exact differences vary depending on platform.
*
* XXH3's speed benefits greatly from SIMD and 64-bit arithmetic,
* but does not require it.
* Any 32-bit and 64-bit targets that can run XXH32 smoothly
* can run XXH3 at competitive speeds, even without vector support.
* Further details are explained in the implementation.
*
* Optimized implementations are provided for AVX512, AVX2, SSE2, NEON, POWER8,
* ZVector and scalar targets. This can be controlled via the XXH_VECTOR macro.
*
* XXH3 implementation is portable:
* it has a generic C90 formulation that can be compiled on any platform,
* all implementations generage exactly the same hash value on all platforms.
* Starting from v0.8.0, it's also labelled "stable", meaning that
* any future version will also generate the same hash value.
*
* XXH3 offers 2 variants, _64bits and _128bits.
*
* When only 64 bits are needed, prefer invoking the _64bits variant, as it
* reduces the amount of mixing, resulting in faster speed on small inputs.
* It's also generally simpler to manipulate a scalar return type than a struct.
*
* The API supports one-shot hashing, streaming mode, and custom secrets.
*/
/*-**********************************************************************
* XXH3 64-bit variant
************************************************************************/
/* XXH3_64bits():
* default 64-bit variant, using default secret and default seed of 0.
* It's the fastest variant. */
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits(const void* data, size_t len);
/*
* XXH3_64bits_withSeed():
* This variant generates a custom secret on the fly
* based on default secret altered using the `seed` value.
* While this operation is decently fast, note that it's not completely free.
* Note: seed==0 produces the same results as XXH3_64bits().
*/
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_withSeed(const void* data, size_t len, XXH64_hash_t seed);
/*!
* The bare minimum size for a custom secret.
*
* @see
* XXH3_64bits_withSecret(), XXH3_64bits_reset_withSecret(),
* XXH3_128bits_withSecret(), XXH3_128bits_reset_withSecret().
*/
#define XXH3_SECRET_SIZE_MIN 136
/*
* XXH3_64bits_withSecret():
* It's possible to provide any blob of bytes as a "secret" to generate the hash.
* This makes it more difficult for an external actor to prepare an intentional collision.
* The main condition is that secretSize *must* be large enough (>= XXH3_SECRET_SIZE_MIN).
* However, the quality of the secret impacts the dispersion of the hash algorithm.
* Therefore, the secret _must_ look like a bunch of random bytes.
* Avoid "trivial" or structured data such as repeated sequences or a text document.
* Whenever in doubt about the "randomness" of the blob of bytes,
* consider employing "XXH3_generateSecret()" instead (see below).
* It will generate a proper high entropy secret derived from the blob of bytes.
* Another advantage of using XXH3_generateSecret() is that
* it guarantees that all bits within the initial blob of bytes
* will impact every bit of the output.
* This is not necessarily the case when using the blob of bytes directly
* because, when hashing _small_ inputs, only a portion of the secret is employed.
*/
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_withSecret(const void* data, size_t len, const void* secret, size_t secretSize);
/******* Streaming *******/
/*
* Streaming requires state maintenance.
* This operation costs memory and CPU.
* As a consequence, streaming is slower than one-shot hashing.
* For better performance, prefer one-shot functions whenever applicable.
*/
/*!
* @brief The state struct for the XXH3 streaming API.
*
* @see XXH3_state_s for details.
*/
typedef struct XXH3_state_s XXH3_state_t;
XXH_PUBLIC_API XXH3_state_t* XXH3_createState(void);
XXH_PUBLIC_API XXH_errorcode XXH3_freeState(XXH3_state_t* statePtr);
XXH_PUBLIC_API void XXH3_copyState(XXH3_state_t* dst_state, const XXH3_state_t* src_state);
/*
* XXH3_64bits_reset():
* Initialize with default parameters.
* digest will be equivalent to `XXH3_64bits()`.
*/
XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset(XXH3_state_t* statePtr);
/*
* XXH3_64bits_reset_withSeed():
* Generate a custom secret from `seed`, and store it into `statePtr`.
* digest will be equivalent to `XXH3_64bits_withSeed()`.
*/
XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed);
/*
* XXH3_64bits_reset_withSecret():
* `secret` is referenced, it _must outlive_ the hash streaming session.
* Similar to one-shot API, `secretSize` must be >= `XXH3_SECRET_SIZE_MIN`,
* and the quality of produced hash values depends on secret's entropy
* (secret's content should look like a bunch of random bytes).
* When in doubt about the randomness of a candidate `secret`,
* consider employing `XXH3_generateSecret()` instead (see below).
*/
XXH_PUBLIC_API XXH_errorcode XXH3_64bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize);
XXH_PUBLIC_API XXH_errorcode XXH3_64bits_update (XXH3_state_t* statePtr, const void* input, size_t length);
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_digest (const XXH3_state_t* statePtr);
/* note : canonical representation of XXH3 is the same as XXH64
* since they both produce XXH64_hash_t values */
/*-**********************************************************************
* XXH3 128-bit variant
************************************************************************/
/*!
* @brief The return value from 128-bit hashes.
*
* Stored in little endian order, although the fields themselves are in native
* endianness.
*/
typedef struct {
XXH64_hash_t low64; /*!< `value & 0xFFFFFFFFFFFFFFFF` */
XXH64_hash_t high64; /*!< `value >> 64` */
} XXH128_hash_t;
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits(const void* data, size_t len);
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_withSeed(const void* data, size_t len, XXH64_hash_t seed);
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_withSecret(const void* data, size_t len, const void* secret, size_t secretSize);
/******* Streaming *******/
/*
* Streaming requires state maintenance.
* This operation costs memory and CPU.
* As a consequence, streaming is slower than one-shot hashing.
* For better performance, prefer one-shot functions whenever applicable.
*
* XXH3_128bits uses the same XXH3_state_t as XXH3_64bits().
* Use already declared XXH3_createState() and XXH3_freeState().
*
* All reset and streaming functions have same meaning as their 64-bit counterpart.
*/
XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset(XXH3_state_t* statePtr);
XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed);
XXH_PUBLIC_API XXH_errorcode XXH3_128bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize);
XXH_PUBLIC_API XXH_errorcode XXH3_128bits_update (XXH3_state_t* statePtr, const void* input, size_t length);
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_digest (const XXH3_state_t* statePtr);
/* Following helper functions make it possible to compare XXH128_hast_t values.
* Since XXH128_hash_t is a structure, this capability is not offered by the language.
* Note: For better performance, these functions can be inlined using XXH_INLINE_ALL */
/*!
* XXH128_isEqual():
* Return: 1 if `h1` and `h2` are equal, 0 if they are not.
*/
XXH_PUBLIC_API int XXH128_isEqual(XXH128_hash_t h1, XXH128_hash_t h2);
/*!
* XXH128_cmp():
*
* This comparator is compatible with stdlib's `qsort()`/`bsearch()`.
*
* return: >0 if *h128_1 > *h128_2
* =0 if *h128_1 == *h128_2
* <0 if *h128_1 < *h128_2
*/
XXH_PUBLIC_API int XXH128_cmp(const void* h128_1, const void* h128_2);
/******* Canonical representation *******/
typedef struct { unsigned char digest[sizeof(XXH128_hash_t)]; } XXH128_canonical_t;
XXH_PUBLIC_API void XXH128_canonicalFromHash(XXH128_canonical_t* dst, XXH128_hash_t hash);
XXH_PUBLIC_API XXH128_hash_t XXH128_hashFromCanonical(const XXH128_canonical_t* src);
#endif /* !XXH_NO_XXH3 */
#endif /* XXH_NO_LONG_LONG */
/*!
* @}
*/
#endif /* XXHASH_H_5627135585666179 */
/* ================================================================================================
This section contains definitions which are not guaranteed to remain stable.
They may change in future versions, becoming incompatible with a different version of the library.
They shall only be used with static linking.
Never use these definitions in association with dynamic linking !
=================================================================================================== */
#if defined(XXH_STATIC_LINKING_ONLY) && !defined(XXH_STATIC_H_3543687687345)
#define XXH_STATIC_H_3543687687345
#if defined(XXH_STATIC_LINKING_ONLY) && !defined(XXHASH_H_STATIC_13879238742)
#define XXHASH_H_STATIC_13879238742
/* ****************************************************************************
* This section contains declarations which are not guaranteed to remain stable.
* They may change in future versions, becoming incompatible with a different
* version of the library.
* These declarations should only be used with static linking.
* Never use them in association with dynamic linking!
***************************************************************************** */
/* These definitions are only meant to allow allocation of XXH state
statically, on stack, or in a struct for example.
Do not use members directly. */
/*
* These definitions are only present to allow static allocation
* of XXH states, on stack or in a struct, for example.
* Never **ever** access their members directly.
*/
struct XXH32_state_s {
unsigned total_len_32;
unsigned large_len;
unsigned v1;
unsigned v2;
unsigned v3;
unsigned v4;
unsigned mem32[4]; /* buffer defined as U32 for alignment */
unsigned memsize;
unsigned reserved; /* never read nor write, will be removed in a future version */
}; /* typedef'd to XXH32_state_t */
struct XXH64_state_s {
unsigned long long total_len;
unsigned long long v1;
unsigned long long v2;
unsigned long long v3;
unsigned long long v4;
unsigned long long mem64[4]; /* buffer defined as U64 for alignment */
unsigned memsize;
unsigned reserved[2]; /* never read nor write, will be removed in a future version */
}; /* typedef'd to XXH64_state_t */
/*!
* @internal
* @brief Structure for XXH32 streaming API.
*
* @note This is only defined when @ref XXH_STATIC_LINKING_ONLY,
* @ref XXH_INLINE_ALL, or @ref XXH_IMPLEMENTATION is defined. Otherwise it is
* an opaque type. This allows fields to safely be changed.
*
* Typedef'd to @ref XXH32_state_t.
* Do not access the members of this struct directly.
* @see XXH64_state_s, XXH3_state_s
*/
struct XXH32_state_s {
XXH32_hash_t total_len_32; /*!< Total length hashed, modulo 2^32 */
XXH32_hash_t large_len; /*!< Whether the hash is >= 16 (handles @ref total_len_32 overflow) */
XXH32_hash_t v[4]; /*!< Accumulator lanes */
XXH32_hash_t mem32[4]; /*!< Internal buffer for partial reads. Treated as unsigned char[16]. */
XXH32_hash_t memsize; /*!< Amount of data in @ref mem32 */
XXH32_hash_t reserved; /*!< Reserved field. Do not read nor write to it. */
}; /* typedef'd to XXH32_state_t */
# ifdef XXH_PRIVATE_API
# include "xxhash.c" /* include xxhash functions as `static`, for inlining */
#ifndef XXH_NO_LONG_LONG /* defined when there is no 64-bit support */
/*!
* @internal
* @brief Structure for XXH64 streaming API.
*
* @note This is only defined when @ref XXH_STATIC_LINKING_ONLY,
* @ref XXH_INLINE_ALL, or @ref XXH_IMPLEMENTATION is defined. Otherwise it is
* an opaque type. This allows fields to safely be changed.
*
* Typedef'd to @ref XXH64_state_t.
* Do not access the members of this struct directly.
* @see XXH32_state_s, XXH3_state_s
*/
struct XXH64_state_s {
XXH64_hash_t total_len; /*!< Total length hashed. This is always 64-bit. */
XXH64_hash_t v[4]; /*!< Accumulator lanes */
XXH64_hash_t mem64[4]; /*!< Internal buffer for partial reads. Treated as unsigned char[32]. */
XXH32_hash_t memsize; /*!< Amount of data in @ref mem64 */
XXH32_hash_t reserved32; /*!< Reserved field, needed for padding anyways*/
XXH64_hash_t reserved64; /*!< Reserved field. Do not read or write to it. */
}; /* typedef'd to XXH64_state_t */
#ifndef XXH_NO_XXH3
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* >= C11 */
# include <stdalign.h>
# define XXH_ALIGN(n) alignas(n)
#elif defined(__cplusplus) && (__cplusplus >= 201103L) /* >= C++11 */
/* In C++ alignas() is a keyword */
# define XXH_ALIGN(n) alignas(n)
#elif defined(__GNUC__)
# define XXH_ALIGN(n) __attribute__ ((aligned(n)))
#elif defined(_MSC_VER)
# define XXH_ALIGN(n) __declspec(align(n))
#else
# define XXH_ALIGN(n) /* disabled */
#endif
/* Old GCC versions only accept the attribute after the type in structures. */
#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)) /* C11+ */ \
&& ! (defined(__cplusplus) && (__cplusplus >= 201103L)) /* >= C++11 */ \
&& defined(__GNUC__)
# define XXH_ALIGN_MEMBER(align, type) type XXH_ALIGN(align)
#else
# define XXH_ALIGN_MEMBER(align, type) XXH_ALIGN(align) type
#endif
/*!
* @brief The size of the internal XXH3 buffer.
*
* This is the optimal update size for incremental hashing.
*
* @see XXH3_64b_update(), XXH3_128b_update().
*/
#define XXH3_INTERNALBUFFER_SIZE 256
/*!
* @brief Default size of the secret buffer (and @ref XXH3_kSecret).
*
* This is the size used in @ref XXH3_kSecret and the seeded functions.
*
* Not to be confused with @ref XXH3_SECRET_SIZE_MIN.
*/
#define XXH3_SECRET_DEFAULT_SIZE 192
/*!
* @internal
* @brief Structure for XXH3 streaming API.
*
* @note This is only defined when @ref XXH_STATIC_LINKING_ONLY,
* @ref XXH_INLINE_ALL, or @ref XXH_IMPLEMENTATION is defined.
* Otherwise it is an opaque type.
* Never use this definition in combination with dynamic library.
* This allows fields to safely be changed in the future.
*
* @note ** This structure has a strict alignment requirement of 64 bytes!! **
* Do not allocate this with `malloc()` or `new`,
* it will not be sufficiently aligned.
* Use @ref XXH3_createState() and @ref XXH3_freeState(), or stack allocation.
*
* Typedef'd to @ref XXH3_state_t.
* Do never access the members of this struct directly.
*
* @see XXH3_INITSTATE() for stack initialization.
* @see XXH3_createState(), XXH3_freeState().
* @see XXH32_state_s, XXH64_state_s
*/
struct XXH3_state_s {
XXH_ALIGN_MEMBER(64, XXH64_hash_t acc[8]);
/*!< The 8 accumulators. Similar to `vN` in @ref XXH32_state_s::v1 and @ref XXH64_state_s */
XXH_ALIGN_MEMBER(64, unsigned char customSecret[XXH3_SECRET_DEFAULT_SIZE]);
/*!< Used to store a custom secret generated from a seed. */
XXH_ALIGN_MEMBER(64, unsigned char buffer[XXH3_INTERNALBUFFER_SIZE]);
/*!< The internal buffer. @see XXH32_state_s::mem32 */
XXH32_hash_t bufferedSize;
/*!< The amount of memory in @ref buffer, @see XXH32_state_s::memsize */
XXH32_hash_t useSeed;
/*!< Reserved field. Needed for padding on 64-bit. */
size_t nbStripesSoFar;
/*!< Number or stripes processed. */
XXH64_hash_t totalLen;
/*!< Total length hashed. 64-bit even on 32-bit targets. */
size_t nbStripesPerBlock;
/*!< Number of stripes per block. */
size_t secretLimit;
/*!< Size of @ref customSecret or @ref extSecret */
XXH64_hash_t seed;
/*!< Seed for _withSeed variants. Must be zero otherwise, @see XXH3_INITSTATE() */
XXH64_hash_t reserved64;
/*!< Reserved field. */
const unsigned char* extSecret;
/*!< Reference to an external secret for the _withSecret variants, NULL
* for other variants. */
/* note: there may be some padding at the end due to alignment on 64 bytes */
}; /* typedef'd to XXH3_state_t */
#undef XXH_ALIGN_MEMBER
/*!
* @brief Initializes a stack-allocated `XXH3_state_s`.
*
* When the @ref XXH3_state_t structure is merely emplaced on stack,
* it should be initialized with XXH3_INITSTATE() or a memset()
* in case its first reset uses XXH3_NNbits_reset_withSeed().
* This init can be omitted if the first reset uses default or _withSecret mode.
* This operation isn't necessary when the state is created with XXH3_createState().
* Note that this doesn't prepare the state for a streaming operation,
* it's still necessary to use XXH3_NNbits_reset*() afterwards.
*/
#define XXH3_INITSTATE(XXH3_state_ptr) { (XXH3_state_ptr)->seed = 0; }
/* XXH128() :
* simple alias to pre-selected XXH3_128bits variant
*/
XXH_PUBLIC_API XXH128_hash_t XXH128(const void* data, size_t len, XXH64_hash_t seed);
/* === Experimental API === */
/* Symbols defined below must be considered tied to a specific library version. */
/*
* XXH3_generateSecret():
*
* Derive a high-entropy secret from any user-defined content, named customSeed.
* The generated secret can be used in combination with `*_withSecret()` functions.
* The `_withSecret()` variants are useful to provide a higher level of protection than 64-bit seed,
* as it becomes much more difficult for an external actor to guess how to impact the calculation logic.
*
* The function accepts as input a custom seed of any length and any content,
* and derives from it a high-entropy secret of length @secretSize
* into an already allocated buffer @secretBuffer.
* @secretSize must be >= XXH3_SECRET_SIZE_MIN
*
* The generated secret can then be used with any `*_withSecret()` variant.
* Functions `XXH3_128bits_withSecret()`, `XXH3_64bits_withSecret()`,
* `XXH3_128bits_reset_withSecret()` and `XXH3_64bits_reset_withSecret()`
* are part of this list. They all accept a `secret` parameter
* which must be large enough for implementation reasons (>= XXH3_SECRET_SIZE_MIN)
* _and_ feature very high entropy (consist of random-looking bytes).
* These conditions can be a high bar to meet, so
* XXH3_generateSecret() can be employed to ensure proper quality.
*
* customSeed can be anything. It can have any size, even small ones,
* and its content can be anything, even "poor entropy" sources such as a bunch of zeroes.
* The resulting `secret` will nonetheless provide all required qualities.
*
* When customSeedSize > 0, supplying NULL as customSeed is undefined behavior.
*/
XXH_PUBLIC_API XXH_errorcode XXH3_generateSecret(void* secretBuffer, size_t secretSize, const void* customSeed, size_t customSeedSize);
/*
* XXH3_generateSecret_fromSeed():
*
* Generate the same secret as the _withSeed() variants.
*
* The resulting secret has a length of XXH3_SECRET_DEFAULT_SIZE (necessarily).
* @secretBuffer must be already allocated, of size at least XXH3_SECRET_DEFAULT_SIZE bytes.
*
* The generated secret can be used in combination with
*`*_withSecret()` and `_withSecretandSeed()` variants.
* This generator is notably useful in combination with `_withSecretandSeed()`,
* as a way to emulate a faster `_withSeed()` variant.
*/
XXH_PUBLIC_API void XXH3_generateSecret_fromSeed(void* secretBuffer, XXH64_hash_t seed);
/*
* *_withSecretandSeed() :
* These variants generate hash values using either
* @seed for "short" keys (< XXH3_MIDSIZE_MAX = 240 bytes)
* or @secret for "large" keys (>= XXH3_MIDSIZE_MAX).
*
* This generally benefits speed, compared to `_withSeed()` or `_withSecret()`.
* `_withSeed()` has to generate the secret on the fly for "large" keys.
* It's fast, but can be perceptible for "not so large" keys (< 1 KB).
* `_withSecret()` has to generate the masks on the fly for "small" keys,
* which requires more instructions than _withSeed() variants.
* Therefore, _withSecretandSeed variant combines the best of both worlds.
*
* When @secret has been generated by XXH3_generateSecret_fromSeed(),
* this variant produces *exactly* the same results as `_withSeed()` variant,
* hence offering only a pure speed benefit on "large" input,
* by skipping the need to regenerate the secret for every large input.
*
* Another usage scenario is to hash the secret to a 64-bit hash value,
* for example with XXH3_64bits(), which then becomes the seed,
* and then employ both the seed and the secret in _withSecretandSeed().
* On top of speed, an added benefit is that each bit in the secret
* has a 50% chance to swap each bit in the output,
* via its impact to the seed.
* This is not guaranteed when using the secret directly in "small data" scenarios,
* because only portions of the secret are employed for small data.
*/
XXH_PUBLIC_API XXH64_hash_t
XXH3_64bits_withSecretandSeed(const void* data, size_t len,
const void* secret, size_t secretSize,
XXH64_hash_t seed);
XXH_PUBLIC_API XXH128_hash_t
XXH3_128bits_withSecretandSeed(const void* data, size_t len,
const void* secret, size_t secretSize,
XXH64_hash_t seed64);
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_reset_withSecretandSeed(XXH3_state_t* statePtr,
const void* secret, size_t secretSize,
XXH64_hash_t seed64);
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_reset_withSecretandSeed(XXH3_state_t* statePtr,
const void* secret, size_t secretSize,
XXH64_hash_t seed64);
#endif /* XXH_NO_XXH3 */
#endif /* XXH_NO_LONG_LONG */
#if defined(XXH_INLINE_ALL) || defined(XXH_PRIVATE_API)
# define XXH_IMPLEMENTATION
#endif
#endif /* defined(XXH_STATIC_LINKING_ONLY) && !defined(XXHASH_H_STATIC_13879238742) */
/* ======================================================================== */
/* ======================================================================== */
/* ======================================================================== */
/*-**********************************************************************
* xxHash implementation
*-**********************************************************************
* xxHash's implementation used to be hosted inside xxhash.c.
*
* However, inlining requires implementation to be visible to the compiler,
* hence be included alongside the header.
* Previously, implementation was hosted inside xxhash.c,
* which was then #included when inlining was activated.
* This construction created issues with a few build and install systems,
* as it required xxhash.c to be stored in /include directory.
*
* xxHash implementation is now directly integrated within xxhash.h.
* As a consequence, xxhash.c is no longer needed in /include.
*
* xxhash.c is still available and is still useful.
* In a "normal" setup, when xxhash is not inlined,
* xxhash.h only exposes the prototypes and public symbols,
* while xxhash.c can be built into an object file xxhash.o
* which can then be linked into the final binary.
************************************************************************/
#if ( defined(XXH_INLINE_ALL) || defined(XXH_PRIVATE_API) \
|| defined(XXH_IMPLEMENTATION) ) && !defined(XXH_IMPLEM_13a8737387)
# define XXH_IMPLEM_13a8737387
/* *************************************
* Tuning parameters
***************************************/
/*!
* @defgroup tuning Tuning parameters
* @{
*
* Various macros to control xxHash's behavior.
*/
#ifdef XXH_DOXYGEN
/*!
* @brief Define this to disable 64-bit code.
*
* Useful if only using the @ref xxh32_family and you have a strict C90 compiler.
*/
# define XXH_NO_LONG_LONG
# undef XXH_NO_LONG_LONG /* don't actually */
/*!
* @brief Controls how unaligned memory is accessed.
*
* By default, access to unaligned memory is controlled by `memcpy()`, which is
* safe and portable.
*
* Unfortunately, on some target/compiler combinations, the generated assembly
* is sub-optimal.
*
* The below switch allow selection of a different access method
* in the search for improved performance.
*
* @par Possible options:
*
* - `XXH_FORCE_MEMORY_ACCESS=0` (default): `memcpy`
* @par
* Use `memcpy()`. Safe and portable. Note that most modern compilers will
* eliminate the function call and treat it as an unaligned access.
*
* - `XXH_FORCE_MEMORY_ACCESS=1`: `__attribute__((packed))`
* @par
* Depends on compiler extensions and is therefore not portable.
* This method is safe _if_ your compiler supports it,
* and *generally* as fast or faster than `memcpy`.
*
* - `XXH_FORCE_MEMORY_ACCESS=2`: Direct cast
* @par
* Casts directly and dereferences. This method doesn't depend on the
* compiler, but it violates the C standard as it directly dereferences an
* unaligned pointer. It can generate buggy code on targets which do not
* support unaligned memory accesses, but in some circumstances, it's the
* only known way to get the most performance.
*
* - `XXH_FORCE_MEMORY_ACCESS=3`: Byteshift
* @par
* Also portable. This can generate the best code on old compilers which don't
* inline small `memcpy()` calls, and it might also be faster on big-endian
* systems which lack a native byteswap instruction. However, some compilers
* will emit literal byteshifts even if the target supports unaligned access.
* .
*
* @warning
* Methods 1 and 2 rely on implementation-defined behavior. Use these with
* care, as what works on one compiler/platform/optimization level may cause
* another to read garbage data or even crash.
*
* See http://fastcompression.blogspot.com/2015/08/accessing-unaligned-memory.html for details.
*
* Prefer these methods in priority order (0 > 3 > 1 > 2)
*/
# define XXH_FORCE_MEMORY_ACCESS 0
/*!
* @def XXH_FORCE_ALIGN_CHECK
* @brief If defined to non-zero, adds a special path for aligned inputs (XXH32()
* and XXH64() only).
*
* This is an important performance trick for architectures without decent
* unaligned memory access performance.
*
* It checks for input alignment, and when conditions are met, uses a "fast
* path" employing direct 32-bit/64-bit reads, resulting in _dramatically
* faster_ read speed.
*
* The check costs one initial branch per hash, which is generally negligible,
* but not zero.
*
* Moreover, it's not useful to generate an additional code path if memory
* access uses the same instruction for both aligned and unaligned
* addresses (e.g. x86 and aarch64).
*
* In these cases, the alignment check can be removed by setting this macro to 0.
* Then the code will always use unaligned memory access.
* Align check is automatically disabled on x86, x64 & arm64,
* which are platforms known to offer good unaligned memory accesses performance.
*
* This option does not affect XXH3 (only XXH32 and XXH64).
*/
# define XXH_FORCE_ALIGN_CHECK 0
/*!
* @def XXH_NO_INLINE_HINTS
* @brief When non-zero, sets all functions to `static`.
*
* By default, xxHash tries to force the compiler to inline almost all internal
* functions.
*
* This can usually improve performance due to reduced jumping and improved
* constant folding, but significantly increases the size of the binary which
* might not be favorable.
*
* Additionally, sometimes the forced inlining can be detrimental to performance,
* depending on the architecture.
*
* XXH_NO_INLINE_HINTS marks all internal functions as static, giving the
* compiler full control on whether to inline or not.
*
* When not optimizing (-O0), optimizing for size (-Os, -Oz), or using
* -fno-inline with GCC or Clang, this will automatically be defined.
*/
# define XXH_NO_INLINE_HINTS 0
/*!
* @def XXH32_ENDJMP
* @brief Whether to use a jump for `XXH32_finalize`.
*
* For performance, `XXH32_finalize` uses multiple branches in the finalizer.
* This is generally preferable for performance,
* but depending on exact architecture, a jmp may be preferable.
*
* This setting is only possibly making a difference for very small inputs.
*/
# define XXH32_ENDJMP 0
/*!
* @internal
* @brief Redefines old internal names.
*
* For compatibility with code that uses xxHash's internals before the names
* were changed to improve namespacing. There is no other reason to use this.
*/
# define XXH_OLD_NAMES
# undef XXH_OLD_NAMES /* don't actually use, it is ugly. */
#endif /* XXH_DOXYGEN */
/*!
* @}
*/
#ifndef XXH_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
/* prefer __packed__ structures (method 1) for gcc on armv7+ and mips */
# if !defined(__clang__) && \
( \
(defined(__INTEL_COMPILER) && !defined(_WIN32)) || \
( \
defined(__GNUC__) && ( \
(defined(__ARM_ARCH) && __ARM_ARCH >= 7) || \
( \
defined(__mips__) && \
(__mips <= 5 || __mips_isa_rev < 6) && \
(!defined(__mips16) || defined(__mips_mips16e2)) \
) \
) \
) \
)
# define XXH_FORCE_MEMORY_ACCESS 1
# endif
#endif
#ifndef XXH_FORCE_ALIGN_CHECK /* can be defined externally */
# if defined(__i386) || defined(__x86_64__) || defined(__aarch64__) \
|| defined(_M_IX86) || defined(_M_X64) || defined(_M_ARM64) /* visual */
# define XXH_FORCE_ALIGN_CHECK 0
# else
# define XXH_FORCE_ALIGN_CHECK 1
# endif
#endif
#ifndef XXH_NO_INLINE_HINTS
# if defined(__OPTIMIZE_SIZE__) /* -Os, -Oz */ \
|| defined(__NO_INLINE__) /* -O0, -fno-inline */
# define XXH_NO_INLINE_HINTS 1
# else
# define XXH_NO_INLINE_HINTS 0
# endif
#endif
#ifndef XXH32_ENDJMP
/* generally preferable for performance */
# define XXH32_ENDJMP 0
#endif
/*!
* @defgroup impl Implementation
* @{
*/
/* *************************************
* Includes & Memory related functions
***************************************/
/* Modify the local functions below should you wish to use some other memory routines */
/* for ZSTD_malloc(), ZSTD_free() */
#define ZSTD_DEPS_NEED_MALLOC
#include "zstd_deps.h" /* size_t, ZSTD_malloc, ZSTD_free, ZSTD_memcpy */
static void* XXH_malloc(size_t s) { return ZSTD_malloc(s); }
static void XXH_free (void* p) { ZSTD_free(p); }
static void* XXH_memcpy(void* dest, const void* src, size_t size) { return ZSTD_memcpy(dest,src,size); }
/* *************************************
* Compiler Specific Options
***************************************/
#ifdef _MSC_VER /* Visual Studio warning fix */
# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
#endif
#if XXH_NO_INLINE_HINTS /* disable inlining hints */
# if defined(__GNUC__) || defined(__clang__)
# define XXH_FORCE_INLINE static __attribute__((unused))
# else
# define XXH_FORCE_INLINE static
# endif
# define XXH_NO_INLINE static
/* enable inlining hints */
#elif defined(__GNUC__) || defined(__clang__)
# define XXH_FORCE_INLINE static __inline__ __attribute__((always_inline, unused))
# define XXH_NO_INLINE static __attribute__((noinline))
#elif defined(_MSC_VER) /* Visual Studio */
# define XXH_FORCE_INLINE static __forceinline
# define XXH_NO_INLINE static __declspec(noinline)
#elif defined (__cplusplus) \
|| (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) /* C99 */
# define XXH_FORCE_INLINE static inline
# define XXH_NO_INLINE static
#else
# define XXH_FORCE_INLINE static
# define XXH_NO_INLINE static
#endif
/* *************************************
* Debug
***************************************/
/*!
* @ingroup tuning
* @def XXH_DEBUGLEVEL
* @brief Sets the debugging level.
*
* XXH_DEBUGLEVEL is expected to be defined externally, typically via the
* compiler's command line options. The value must be a number.
*/
#ifndef XXH_DEBUGLEVEL
# ifdef DEBUGLEVEL /* backwards compat */
# define XXH_DEBUGLEVEL DEBUGLEVEL
# else
# define XXH_DEBUGLEVEL 0
# endif
#endif
#if (XXH_DEBUGLEVEL>=1)
# include <assert.h> /* note: can still be disabled with NDEBUG */
# define XXH_ASSERT(c) assert(c)
#else
# define XXH_ASSERT(c) ((void)0)
#endif
/* note: use after variable declarations */
#ifndef XXH_STATIC_ASSERT
# if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */
# include <assert.h>
# define XXH_STATIC_ASSERT_WITH_MESSAGE(c,m) do { static_assert((c),m); } while(0)
# elif defined(__cplusplus) && (__cplusplus >= 201103L) /* C++11 */
# define XXH_STATIC_ASSERT_WITH_MESSAGE(c,m) do { static_assert((c),m); } while(0)
# else
# define XXH_STATIC_ASSERT_WITH_MESSAGE(c,m) do { struct xxh_sa { char x[(c) ? 1 : -1]; }; } while(0)
# endif
# define XXH_STATIC_ASSERT(c) XXH_STATIC_ASSERT_WITH_MESSAGE((c),#c)
#endif
/*!
* @internal
* @def XXH_COMPILER_GUARD(var)
* @brief Used to prevent unwanted optimizations for @p var.
*
* It uses an empty GCC inline assembly statement with a register constraint
* which forces @p var into a general purpose register (eg eax, ebx, ecx
* on x86) and marks it as modified.
*
* This is used in a few places to avoid unwanted autovectorization (e.g.
* XXH32_round()). All vectorization we want is explicit via intrinsics,
* and _usually_ isn't wanted elsewhere.
*
* We also use it to prevent unwanted constant folding for AArch64 in
* XXH3_initCustomSecret_scalar().
*/
#if defined(__GNUC__) || defined(__clang__)
# define XXH_COMPILER_GUARD(var) __asm__ __volatile__("" : "+r" (var))
#else
# define XXH_COMPILER_GUARD(var) ((void)0)
#endif
/* *************************************
* Basic Types
***************************************/
#if !defined (__VMS) \
&& (defined (__cplusplus) \
|| (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
# include <stdint.h>
typedef uint8_t xxh_u8;
#else
typedef unsigned char xxh_u8;
#endif
typedef XXH32_hash_t xxh_u32;
#ifdef XXH_OLD_NAMES
# define BYTE xxh_u8
# define U8 xxh_u8
# define U32 xxh_u32
#endif
/* *** Memory access *** */
/*!
* @internal
* @fn xxh_u32 XXH_read32(const void* ptr)
* @brief Reads an unaligned 32-bit integer from @p ptr in native endianness.
*
* Affected by @ref XXH_FORCE_MEMORY_ACCESS.
*
* @param ptr The pointer to read from.
* @return The 32-bit native endian integer from the bytes at @p ptr.
*/
/*!
* @internal
* @fn xxh_u32 XXH_readLE32(const void* ptr)
* @brief Reads an unaligned 32-bit little endian integer from @p ptr.
*
* Affected by @ref XXH_FORCE_MEMORY_ACCESS.
*
* @param ptr The pointer to read from.
* @return The 32-bit little endian integer from the bytes at @p ptr.
*/
/*!
* @internal
* @fn xxh_u32 XXH_readBE32(const void* ptr)
* @brief Reads an unaligned 32-bit big endian integer from @p ptr.
*
* Affected by @ref XXH_FORCE_MEMORY_ACCESS.
*
* @param ptr The pointer to read from.
* @return The 32-bit big endian integer from the bytes at @p ptr.
*/
/*!
* @internal
* @fn xxh_u32 XXH_readLE32_align(const void* ptr, XXH_alignment align)
* @brief Like @ref XXH_readLE32(), but has an option for aligned reads.
*
* Affected by @ref XXH_FORCE_MEMORY_ACCESS.
* Note that when @ref XXH_FORCE_ALIGN_CHECK == 0, the @p align parameter is
* always @ref XXH_alignment::XXH_unaligned.
*
* @param ptr The pointer to read from.
* @param align Whether @p ptr is aligned.
* @pre
* If @p align == @ref XXH_alignment::XXH_aligned, @p ptr must be 4 byte
* aligned.
* @return The 32-bit little endian integer from the bytes at @p ptr.
*/
#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==3))
/*
* Manual byteshift. Best for old compilers which don't inline memcpy.
* We actually directly use XXH_readLE32 and XXH_readBE32.
*/
#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2))
/*
* Force direct memory access. Only works on CPU which support unaligned memory
* access in hardware.
*/
static xxh_u32 XXH_read32(const void* memPtr) { return *(const xxh_u32*) memPtr; }
#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1))
/*
* __pack instructions are safer but compiler specific, hence potentially
* problematic for some compilers.
*
* Currently only defined for GCC and ICC.
*/
#ifdef XXH_OLD_NAMES
typedef union { xxh_u32 u32; } __attribute__((packed)) unalign;
#endif
static xxh_u32 XXH_read32(const void* ptr)
{
typedef union { xxh_u32 u32; } __attribute__((packed)) xxh_unalign;
return ((const xxh_unalign*)ptr)->u32;
}
#else
/*
* Portable and safe solution. Generally efficient.
* see: http://fastcompression.blogspot.com/2015/08/accessing-unaligned-memory.html
*/
static xxh_u32 XXH_read32(const void* memPtr)
{
xxh_u32 val;
XXH_memcpy(&val, memPtr, sizeof(val));
return val;
}
#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */
/* *** Endianness *** */
/*!
* @ingroup tuning
* @def XXH_CPU_LITTLE_ENDIAN
* @brief Whether the target is little endian.
*
* Defined to 1 if the target is little endian, or 0 if it is big endian.
* It can be defined externally, for example on the compiler command line.
*
* If it is not defined,
* a runtime check (which is usually constant folded) is used instead.
*
* @note
* This is not necessarily defined to an integer constant.
*
* @see XXH_isLittleEndian() for the runtime check.
*/
#ifndef XXH_CPU_LITTLE_ENDIAN
/*
* Try to detect endianness automatically, to avoid the nonstandard behavior
* in `XXH_isLittleEndian()`
*/
# if defined(_WIN32) /* Windows is always little endian */ \
|| defined(__LITTLE_ENDIAN__) \
|| (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
# define XXH_CPU_LITTLE_ENDIAN 1
# elif defined(__BIG_ENDIAN__) \
|| (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
# define XXH_CPU_LITTLE_ENDIAN 0
# else
/*!
* @internal
* @brief Runtime check for @ref XXH_CPU_LITTLE_ENDIAN.
*
* Most compilers will constant fold this.
*/
static int XXH_isLittleEndian(void)
{
/*
* Portable and well-defined behavior.
* Don't use static: it is detrimental to performance.
*/
const union { xxh_u32 u; xxh_u8 c[4]; } one = { 1 };
return one.c[0];
}
# define XXH_CPU_LITTLE_ENDIAN XXH_isLittleEndian()
# endif
#endif
/* ****************************************
* Compiler-specific Functions and Macros
******************************************/
#define XXH_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
#ifdef __has_builtin
# define XXH_HAS_BUILTIN(x) __has_builtin(x)
#else
# define XXH_HAS_BUILTIN(x) 0
#endif
/*!
* @internal
* @def XXH_rotl32(x,r)
* @brief 32-bit rotate left.
*
* @param x The 32-bit integer to be rotated.
* @param r The number of bits to rotate.
* @pre
* @p r > 0 && @p r < 32
* @note
* @p x and @p r may be evaluated multiple times.
* @return The rotated result.
*/
#if !defined(NO_CLANG_BUILTIN) && XXH_HAS_BUILTIN(__builtin_rotateleft32) \
&& XXH_HAS_BUILTIN(__builtin_rotateleft64)
# define XXH_rotl32 __builtin_rotateleft32
# define XXH_rotl64 __builtin_rotateleft64
/* Note: although _rotl exists for minGW (GCC under windows), performance seems poor */
#elif defined(_MSC_VER)
# define XXH_rotl32(x,r) _rotl(x,r)
# define XXH_rotl64(x,r) _rotl64(x,r)
#else
# define XXH_rotl32(x,r) (((x) << (r)) | ((x) >> (32 - (r))))
# define XXH_rotl64(x,r) (((x) << (r)) | ((x) >> (64 - (r))))
#endif
/*!
* @internal
* @fn xxh_u32 XXH_swap32(xxh_u32 x)
* @brief A 32-bit byteswap.
*
* @param x The 32-bit integer to byteswap.
* @return @p x, byteswapped.
*/
#if defined(_MSC_VER) /* Visual Studio */
# define XXH_swap32 _byteswap_ulong
#elif XXH_GCC_VERSION >= 403
# define XXH_swap32 __builtin_bswap32
#else
static xxh_u32 XXH_swap32 (xxh_u32 x)
{
return ((x << 24) & 0xff000000 ) |
((x << 8) & 0x00ff0000 ) |
((x >> 8) & 0x0000ff00 ) |
((x >> 24) & 0x000000ff );
}
#endif
/* ***************************
* Memory reads
*****************************/
/*!
* @internal
* @brief Enum to indicate whether a pointer is aligned.
*/
typedef enum {
XXH_aligned, /*!< Aligned */
XXH_unaligned /*!< Possibly unaligned */
} XXH_alignment;
/*
* XXH_FORCE_MEMORY_ACCESS==3 is an endian-independent byteshift load.
*
* This is ideal for older compilers which don't inline memcpy.
*/
#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==3))
XXH_FORCE_INLINE xxh_u32 XXH_readLE32(const void* memPtr)
{
const xxh_u8* bytePtr = (const xxh_u8 *)memPtr;
return bytePtr[0]
| ((xxh_u32)bytePtr[1] << 8)
| ((xxh_u32)bytePtr[2] << 16)
| ((xxh_u32)bytePtr[3] << 24);
}
XXH_FORCE_INLINE xxh_u32 XXH_readBE32(const void* memPtr)
{
const xxh_u8* bytePtr = (const xxh_u8 *)memPtr;
return bytePtr[3]
| ((xxh_u32)bytePtr[2] << 8)
| ((xxh_u32)bytePtr[1] << 16)
| ((xxh_u32)bytePtr[0] << 24);
}
#else
XXH_FORCE_INLINE xxh_u32 XXH_readLE32(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_read32(ptr) : XXH_swap32(XXH_read32(ptr));
}
static xxh_u32 XXH_readBE32(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_swap32(XXH_read32(ptr)) : XXH_read32(ptr);
}
#endif
XXH_FORCE_INLINE xxh_u32
XXH_readLE32_align(const void* ptr, XXH_alignment align)
{
if (align==XXH_unaligned) {
return XXH_readLE32(ptr);
} else {
return XXH_CPU_LITTLE_ENDIAN ? *(const xxh_u32*)ptr : XXH_swap32(*(const xxh_u32*)ptr);
}
}
/* *************************************
* Misc
***************************************/
/*! @ingroup public */
XXH_PUBLIC_API unsigned XXH_versionNumber (void) { return XXH_VERSION_NUMBER; }
/* *******************************************************************
* 32-bit hash functions
*********************************************************************/
/*!
* @}
* @defgroup xxh32_impl XXH32 implementation
* @ingroup impl
* @{
*/
/* #define instead of static const, to be used as initializers */
#define XXH_PRIME32_1 0x9E3779B1U /*!< 0b10011110001101110111100110110001 */
#define XXH_PRIME32_2 0x85EBCA77U /*!< 0b10000101111010111100101001110111 */
#define XXH_PRIME32_3 0xC2B2AE3DU /*!< 0b11000010101100101010111000111101 */
#define XXH_PRIME32_4 0x27D4EB2FU /*!< 0b00100111110101001110101100101111 */
#define XXH_PRIME32_5 0x165667B1U /*!< 0b00010110010101100110011110110001 */
#ifdef XXH_OLD_NAMES
# define PRIME32_1 XXH_PRIME32_1
# define PRIME32_2 XXH_PRIME32_2
# define PRIME32_3 XXH_PRIME32_3
# define PRIME32_4 XXH_PRIME32_4
# define PRIME32_5 XXH_PRIME32_5
#endif
/*!
* @internal
* @brief Normal stripe processing routine.
*
* This shuffles the bits so that any bit from @p input impacts several bits in
* @p acc.
*
* @param acc The accumulator lane.
* @param input The stripe of input to mix.
* @return The mixed accumulator lane.
*/
static xxh_u32 XXH32_round(xxh_u32 acc, xxh_u32 input)
{
acc += input * XXH_PRIME32_2;
acc = XXH_rotl32(acc, 13);
acc *= XXH_PRIME32_1;
#if (defined(__SSE4_1__) || defined(__aarch64__)) && !defined(XXH_ENABLE_AUTOVECTORIZE)
/*
* UGLY HACK:
* A compiler fence is the only thing that prevents GCC and Clang from
* autovectorizing the XXH32 loop (pragmas and attributes don't work for some
* reason) without globally disabling SSE4.1.
*
* The reason we want to avoid vectorization is because despite working on
* 4 integers at a time, there are multiple factors slowing XXH32 down on
* SSE4:
* - There's a ridiculous amount of lag from pmulld (10 cycles of latency on
* newer chips!) making it slightly slower to multiply four integers at
* once compared to four integers independently. Even when pmulld was
* fastest, Sandy/Ivy Bridge, it is still not worth it to go into SSE
* just to multiply unless doing a long operation.
*
* - Four instructions are required to rotate,
* movqda tmp, v // not required with VEX encoding
* pslld tmp, 13 // tmp <<= 13
* psrld v, 19 // x >>= 19
* por v, tmp // x |= tmp
* compared to one for scalar:
* roll v, 13 // reliably fast across the board
* shldl v, v, 13 // Sandy Bridge and later prefer this for some reason
*
* - Instruction level parallelism is actually more beneficial here because
* the SIMD actually serializes this operation: While v1 is rotating, v2
* can load data, while v3 can multiply. SSE forces them to operate
* together.
*
* This is also enabled on AArch64, as Clang autovectorizes it incorrectly
* and it is pointless writing a NEON implementation that is basically the
* same speed as scalar for XXH32.
*/
XXH_COMPILER_GUARD(acc);
#endif
return acc;
}
/*!
* @internal
* @brief Mixes all bits to finalize the hash.
*
* The final mix ensures that all input bits have a chance to impact any bit in
* the output digest, resulting in an unbiased distribution.
*
* @param h32 The hash to avalanche.
* @return The avalanched hash.
*/
static xxh_u32 XXH32_avalanche(xxh_u32 h32)
{
h32 ^= h32 >> 15;
h32 *= XXH_PRIME32_2;
h32 ^= h32 >> 13;
h32 *= XXH_PRIME32_3;
h32 ^= h32 >> 16;
return(h32);
}
#define XXH_get32bits(p) XXH_readLE32_align(p, align)
/*!
* @internal
* @brief Processes the last 0-15 bytes of @p ptr.
*
* There may be up to 15 bytes remaining to consume from the input.
* This final stage will digest them to ensure that all input bytes are present
* in the final mix.
*
* @param h32 The hash to finalize.
* @param ptr The pointer to the remaining input.
* @param len The remaining length, modulo 16.
* @param align Whether @p ptr is aligned.
* @return The finalized hash.
*/
static xxh_u32
XXH32_finalize(xxh_u32 h32, const xxh_u8* ptr, size_t len, XXH_alignment align)
{
#define XXH_PROCESS1 do { \
h32 += (*ptr++) * XXH_PRIME32_5; \
h32 = XXH_rotl32(h32, 11) * XXH_PRIME32_1; \
} while (0)
#define XXH_PROCESS4 do { \
h32 += XXH_get32bits(ptr) * XXH_PRIME32_3; \
ptr += 4; \
h32 = XXH_rotl32(h32, 17) * XXH_PRIME32_4; \
} while (0)
if (ptr==NULL) XXH_ASSERT(len == 0);
/* Compact rerolled version; generally faster */
if (!XXH32_ENDJMP) {
len &= 15;
while (len >= 4) {
XXH_PROCESS4;
len -= 4;
}
while (len > 0) {
XXH_PROCESS1;
--len;
}
return XXH32_avalanche(h32);
} else {
switch(len&15) /* or switch(bEnd - p) */ {
case 12: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 8: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 4: XXH_PROCESS4;
return XXH32_avalanche(h32);
case 13: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 9: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 5: XXH_PROCESS4;
XXH_PROCESS1;
return XXH32_avalanche(h32);
case 14: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 10: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 6: XXH_PROCESS4;
XXH_PROCESS1;
XXH_PROCESS1;
return XXH32_avalanche(h32);
case 15: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 11: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 7: XXH_PROCESS4;
XXH_FALLTHROUGH;
case 3: XXH_PROCESS1;
XXH_FALLTHROUGH;
case 2: XXH_PROCESS1;
XXH_FALLTHROUGH;
case 1: XXH_PROCESS1;
XXH_FALLTHROUGH;
case 0: return XXH32_avalanche(h32);
}
XXH_ASSERT(0);
return h32; /* reaching this point is deemed impossible */
}
}
#ifdef XXH_OLD_NAMES
# define PROCESS1 XXH_PROCESS1
# define PROCESS4 XXH_PROCESS4
#else
# undef XXH_PROCESS1
# undef XXH_PROCESS4
#endif
/*!
* @internal
* @brief The implementation for @ref XXH32().
*
* @param input , len , seed Directly passed from @ref XXH32().
* @param align Whether @p input is aligned.
* @return The calculated hash.
*/
XXH_FORCE_INLINE xxh_u32
XXH32_endian_align(const xxh_u8* input, size_t len, xxh_u32 seed, XXH_alignment align)
{
xxh_u32 h32;
if (input==NULL) XXH_ASSERT(len == 0);
if (len>=16) {
const xxh_u8* const bEnd = input + len;
const xxh_u8* const limit = bEnd - 15;
xxh_u32 v1 = seed + XXH_PRIME32_1 + XXH_PRIME32_2;
xxh_u32 v2 = seed + XXH_PRIME32_2;
xxh_u32 v3 = seed + 0;
xxh_u32 v4 = seed - XXH_PRIME32_1;
do {
v1 = XXH32_round(v1, XXH_get32bits(input)); input += 4;
v2 = XXH32_round(v2, XXH_get32bits(input)); input += 4;
v3 = XXH32_round(v3, XXH_get32bits(input)); input += 4;
v4 = XXH32_round(v4, XXH_get32bits(input)); input += 4;
} while (input < limit);
h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7)
+ XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18);
} else {
h32 = seed + XXH_PRIME32_5;
}
h32 += (xxh_u32)len;
return XXH32_finalize(h32, input, len&15, align);
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t len, XXH32_hash_t seed)
{
#if 0
/* Simple version, good for code maintenance, but unfortunately slow for small inputs */
XXH32_state_t state;
XXH32_reset(&state, seed);
XXH32_update(&state, (const xxh_u8*)input, len);
return XXH32_digest(&state);
#else
if (XXH_FORCE_ALIGN_CHECK) {
if ((((size_t)input) & 3) == 0) { /* Input is 4-bytes aligned, leverage the speed benefit */
return XXH32_endian_align((const xxh_u8*)input, len, seed, XXH_aligned);
} }
return XXH32_endian_align((const xxh_u8*)input, len, seed, XXH_unaligned);
#endif
}
/******* Hash streaming *******/
/*!
* @ingroup xxh32_family
*/
XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void)
{
return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t));
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr)
{
XXH_free(statePtr);
return XXH_OK;
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* dstState, const XXH32_state_t* srcState)
{
XXH_memcpy(dstState, srcState, sizeof(*dstState));
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH_errorcode XXH32_reset(XXH32_state_t* statePtr, XXH32_hash_t seed)
{
XXH_ASSERT(statePtr != NULL);
memset(statePtr, 0, sizeof(*statePtr));
statePtr->v[0] = seed + XXH_PRIME32_1 + XXH_PRIME32_2;
statePtr->v[1] = seed + XXH_PRIME32_2;
statePtr->v[2] = seed + 0;
statePtr->v[3] = seed - XXH_PRIME32_1;
return XXH_OK;
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH_errorcode
XXH32_update(XXH32_state_t* state, const void* input, size_t len)
{
if (input==NULL) {
XXH_ASSERT(len == 0);
return XXH_OK;
}
{ const xxh_u8* p = (const xxh_u8*)input;
const xxh_u8* const bEnd = p + len;
state->total_len_32 += (XXH32_hash_t)len;
state->large_len |= (XXH32_hash_t)((len>=16) | (state->total_len_32>=16));
if (state->memsize + len < 16) { /* fill in tmp buffer */
XXH_memcpy((xxh_u8*)(state->mem32) + state->memsize, input, len);
state->memsize += (XXH32_hash_t)len;
return XXH_OK;
}
if (state->memsize) { /* some data left from previous update */
XXH_memcpy((xxh_u8*)(state->mem32) + state->memsize, input, 16-state->memsize);
{ const xxh_u32* p32 = state->mem32;
state->v[0] = XXH32_round(state->v[0], XXH_readLE32(p32)); p32++;
state->v[1] = XXH32_round(state->v[1], XXH_readLE32(p32)); p32++;
state->v[2] = XXH32_round(state->v[2], XXH_readLE32(p32)); p32++;
state->v[3] = XXH32_round(state->v[3], XXH_readLE32(p32));
}
p += 16-state->memsize;
state->memsize = 0;
}
if (p <= bEnd-16) {
const xxh_u8* const limit = bEnd - 16;
do {
state->v[0] = XXH32_round(state->v[0], XXH_readLE32(p)); p+=4;
state->v[1] = XXH32_round(state->v[1], XXH_readLE32(p)); p+=4;
state->v[2] = XXH32_round(state->v[2], XXH_readLE32(p)); p+=4;
state->v[3] = XXH32_round(state->v[3], XXH_readLE32(p)); p+=4;
} while (p<=limit);
}
if (p < bEnd) {
XXH_memcpy(state->mem32, p, (size_t)(bEnd-p));
state->memsize = (unsigned)(bEnd-p);
}
}
return XXH_OK;
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH32_hash_t XXH32_digest(const XXH32_state_t* state)
{
xxh_u32 h32;
if (state->large_len) {
h32 = XXH_rotl32(state->v[0], 1)
+ XXH_rotl32(state->v[1], 7)
+ XXH_rotl32(state->v[2], 12)
+ XXH_rotl32(state->v[3], 18);
} else {
h32 = state->v[2] /* == seed */ + XXH_PRIME32_5;
}
h32 += state->total_len_32;
return XXH32_finalize(h32, (const xxh_u8*)state->mem32, state->memsize, XXH_aligned);
}
/******* Canonical representation *******/
/*!
* @ingroup xxh32_family
* The default return values from XXH functions are unsigned 32 and 64 bit
* integers.
*
* The canonical representation uses big endian convention, the same convention
* as human-readable numbers (large digits first).
*
* This way, hash values can be written into a file or buffer, remaining
* comparable across different systems.
*
* The following functions allow transformation of hash values to and from their
* canonical format.
*/
XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash)
{
/* XXH_STATIC_ASSERT(sizeof(XXH32_canonical_t) == sizeof(XXH32_hash_t)); */
if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap32(hash);
XXH_memcpy(dst, &hash, sizeof(*dst));
}
/*! @ingroup xxh32_family */
XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src)
{
return XXH_readBE32(src);
}
#ifndef XXH_NO_LONG_LONG
/* *******************************************************************
* 64-bit hash functions
*********************************************************************/
/*!
* @}
* @ingroup impl
* @{
*/
/******* Memory access *******/
typedef XXH64_hash_t xxh_u64;
#ifdef XXH_OLD_NAMES
# define U64 xxh_u64
#endif
#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==3))
/*
* Manual byteshift. Best for old compilers which don't inline memcpy.
* We actually directly use XXH_readLE64 and XXH_readBE64.
*/
#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2))
/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */
static xxh_u64 XXH_read64(const void* memPtr)
{
return *(const xxh_u64*) memPtr;
}
#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1))
/*
* __pack instructions are safer, but compiler specific, hence potentially
* problematic for some compilers.
*
* Currently only defined for GCC and ICC.
*/
#ifdef XXH_OLD_NAMES
typedef union { xxh_u32 u32; xxh_u64 u64; } __attribute__((packed)) unalign64;
#endif
static xxh_u64 XXH_read64(const void* ptr)
{
typedef union { xxh_u32 u32; xxh_u64 u64; } __attribute__((packed)) xxh_unalign64;
return ((const xxh_unalign64*)ptr)->u64;
}
#else
/*
* Portable and safe solution. Generally efficient.
* see: http://fastcompression.blogspot.com/2015/08/accessing-unaligned-memory.html
*/
static xxh_u64 XXH_read64(const void* memPtr)
{
xxh_u64 val;
XXH_memcpy(&val, memPtr, sizeof(val));
return val;
}
#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */
#if defined(_MSC_VER) /* Visual Studio */
# define XXH_swap64 _byteswap_uint64
#elif XXH_GCC_VERSION >= 403
# define XXH_swap64 __builtin_bswap64
#else
static xxh_u64 XXH_swap64(xxh_u64 x)
{
return ((x << 56) & 0xff00000000000000ULL) |
((x << 40) & 0x00ff000000000000ULL) |
((x << 24) & 0x0000ff0000000000ULL) |
((x << 8) & 0x000000ff00000000ULL) |
((x >> 8) & 0x00000000ff000000ULL) |
((x >> 24) & 0x0000000000ff0000ULL) |
((x >> 40) & 0x000000000000ff00ULL) |
((x >> 56) & 0x00000000000000ffULL);
}
#endif
/* XXH_FORCE_MEMORY_ACCESS==3 is an endian-independent byteshift load. */
#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==3))
XXH_FORCE_INLINE xxh_u64 XXH_readLE64(const void* memPtr)
{
const xxh_u8* bytePtr = (const xxh_u8 *)memPtr;
return bytePtr[0]
| ((xxh_u64)bytePtr[1] << 8)
| ((xxh_u64)bytePtr[2] << 16)
| ((xxh_u64)bytePtr[3] << 24)
| ((xxh_u64)bytePtr[4] << 32)
| ((xxh_u64)bytePtr[5] << 40)
| ((xxh_u64)bytePtr[6] << 48)
| ((xxh_u64)bytePtr[7] << 56);
}
XXH_FORCE_INLINE xxh_u64 XXH_readBE64(const void* memPtr)
{
const xxh_u8* bytePtr = (const xxh_u8 *)memPtr;
return bytePtr[7]
| ((xxh_u64)bytePtr[6] << 8)
| ((xxh_u64)bytePtr[5] << 16)
| ((xxh_u64)bytePtr[4] << 24)
| ((xxh_u64)bytePtr[3] << 32)
| ((xxh_u64)bytePtr[2] << 40)
| ((xxh_u64)bytePtr[1] << 48)
| ((xxh_u64)bytePtr[0] << 56);
}
#else
XXH_FORCE_INLINE xxh_u64 XXH_readLE64(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_read64(ptr) : XXH_swap64(XXH_read64(ptr));
}
static xxh_u64 XXH_readBE64(const void* ptr)
{
return XXH_CPU_LITTLE_ENDIAN ? XXH_swap64(XXH_read64(ptr)) : XXH_read64(ptr);
}
#endif
XXH_FORCE_INLINE xxh_u64
XXH_readLE64_align(const void* ptr, XXH_alignment align)
{
if (align==XXH_unaligned)
return XXH_readLE64(ptr);
else
return XXH_CPU_LITTLE_ENDIAN ? *(const xxh_u64*)ptr : XXH_swap64(*(const xxh_u64*)ptr);
}
/******* xxh64 *******/
/*!
* @}
* @defgroup xxh64_impl XXH64 implementation
* @ingroup impl
* @{
*/
/* #define rather that static const, to be used as initializers */
#define XXH_PRIME64_1 0x9E3779B185EBCA87ULL /*!< 0b1001111000110111011110011011000110000101111010111100101010000111 */
#define XXH_PRIME64_2 0xC2B2AE3D27D4EB4FULL /*!< 0b1100001010110010101011100011110100100111110101001110101101001111 */
#define XXH_PRIME64_3 0x165667B19E3779F9ULL /*!< 0b0001011001010110011001111011000110011110001101110111100111111001 */
#define XXH_PRIME64_4 0x85EBCA77C2B2AE63ULL /*!< 0b1000010111101011110010100111011111000010101100101010111001100011 */
#define XXH_PRIME64_5 0x27D4EB2F165667C5ULL /*!< 0b0010011111010100111010110010111100010110010101100110011111000101 */
#ifdef XXH_OLD_NAMES
# define PRIME64_1 XXH_PRIME64_1
# define PRIME64_2 XXH_PRIME64_2
# define PRIME64_3 XXH_PRIME64_3
# define PRIME64_4 XXH_PRIME64_4
# define PRIME64_5 XXH_PRIME64_5
#endif
static xxh_u64 XXH64_round(xxh_u64 acc, xxh_u64 input)
{
acc += input * XXH_PRIME64_2;
acc = XXH_rotl64(acc, 31);
acc *= XXH_PRIME64_1;
return acc;
}
static xxh_u64 XXH64_mergeRound(xxh_u64 acc, xxh_u64 val)
{
val = XXH64_round(0, val);
acc ^= val;
acc = acc * XXH_PRIME64_1 + XXH_PRIME64_4;
return acc;
}
static xxh_u64 XXH64_avalanche(xxh_u64 h64)
{
h64 ^= h64 >> 33;
h64 *= XXH_PRIME64_2;
h64 ^= h64 >> 29;
h64 *= XXH_PRIME64_3;
h64 ^= h64 >> 32;
return h64;
}
#define XXH_get64bits(p) XXH_readLE64_align(p, align)
static xxh_u64
XXH64_finalize(xxh_u64 h64, const xxh_u8* ptr, size_t len, XXH_alignment align)
{
if (ptr==NULL) XXH_ASSERT(len == 0);
len &= 31;
while (len >= 8) {
xxh_u64 const k1 = XXH64_round(0, XXH_get64bits(ptr));
ptr += 8;
h64 ^= k1;
h64 = XXH_rotl64(h64,27) * XXH_PRIME64_1 + XXH_PRIME64_4;
len -= 8;
}
if (len >= 4) {
h64 ^= (xxh_u64)(XXH_get32bits(ptr)) * XXH_PRIME64_1;
ptr += 4;
h64 = XXH_rotl64(h64, 23) * XXH_PRIME64_2 + XXH_PRIME64_3;
len -= 4;
}
while (len > 0) {
h64 ^= (*ptr++) * XXH_PRIME64_5;
h64 = XXH_rotl64(h64, 11) * XXH_PRIME64_1;
--len;
}
return XXH64_avalanche(h64);
}
#ifdef XXH_OLD_NAMES
# define PROCESS1_64 XXH_PROCESS1_64
# define PROCESS4_64 XXH_PROCESS4_64
# define PROCESS8_64 XXH_PROCESS8_64
#else
# undef XXH_PROCESS1_64
# undef XXH_PROCESS4_64
# undef XXH_PROCESS8_64
#endif
XXH_FORCE_INLINE xxh_u64
XXH64_endian_align(const xxh_u8* input, size_t len, xxh_u64 seed, XXH_alignment align)
{
xxh_u64 h64;
if (input==NULL) XXH_ASSERT(len == 0);
if (len>=32) {
const xxh_u8* const bEnd = input + len;
const xxh_u8* const limit = bEnd - 31;
xxh_u64 v1 = seed + XXH_PRIME64_1 + XXH_PRIME64_2;
xxh_u64 v2 = seed + XXH_PRIME64_2;
xxh_u64 v3 = seed + 0;
xxh_u64 v4 = seed - XXH_PRIME64_1;
do {
v1 = XXH64_round(v1, XXH_get64bits(input)); input+=8;
v2 = XXH64_round(v2, XXH_get64bits(input)); input+=8;
v3 = XXH64_round(v3, XXH_get64bits(input)); input+=8;
v4 = XXH64_round(v4, XXH_get64bits(input)); input+=8;
} while (input<limit);
h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
h64 = XXH64_mergeRound(h64, v1);
h64 = XXH64_mergeRound(h64, v2);
h64 = XXH64_mergeRound(h64, v3);
h64 = XXH64_mergeRound(h64, v4);
} else {
h64 = seed + XXH_PRIME64_5;
}
h64 += (xxh_u64) len;
return XXH64_finalize(h64, input, len, align);
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH64_hash_t XXH64 (const void* input, size_t len, XXH64_hash_t seed)
{
#if 0
/* Simple version, good for code maintenance, but unfortunately slow for small inputs */
XXH64_state_t state;
XXH64_reset(&state, seed);
XXH64_update(&state, (const xxh_u8*)input, len);
return XXH64_digest(&state);
#else
if (XXH_FORCE_ALIGN_CHECK) {
if ((((size_t)input) & 7)==0) { /* Input is aligned, let's leverage the speed advantage */
return XXH64_endian_align((const xxh_u8*)input, len, seed, XXH_aligned);
} }
return XXH64_endian_align((const xxh_u8*)input, len, seed, XXH_unaligned);
#endif
}
/******* Hash Streaming *******/
/*! @ingroup xxh64_family*/
XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void)
{
return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t));
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr)
{
XXH_free(statePtr);
return XXH_OK;
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* dstState, const XXH64_state_t* srcState)
{
XXH_memcpy(dstState, srcState, sizeof(*dstState));
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH_errorcode XXH64_reset(XXH64_state_t* statePtr, XXH64_hash_t seed)
{
XXH_ASSERT(statePtr != NULL);
memset(statePtr, 0, sizeof(*statePtr));
statePtr->v[0] = seed + XXH_PRIME64_1 + XXH_PRIME64_2;
statePtr->v[1] = seed + XXH_PRIME64_2;
statePtr->v[2] = seed + 0;
statePtr->v[3] = seed - XXH_PRIME64_1;
return XXH_OK;
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH_errorcode
XXH64_update (XXH64_state_t* state, const void* input, size_t len)
{
if (input==NULL) {
XXH_ASSERT(len == 0);
return XXH_OK;
}
{ const xxh_u8* p = (const xxh_u8*)input;
const xxh_u8* const bEnd = p + len;
state->total_len += len;
if (state->memsize + len < 32) { /* fill in tmp buffer */
XXH_memcpy(((xxh_u8*)state->mem64) + state->memsize, input, len);
state->memsize += (xxh_u32)len;
return XXH_OK;
}
if (state->memsize) { /* tmp buffer is full */
XXH_memcpy(((xxh_u8*)state->mem64) + state->memsize, input, 32-state->memsize);
state->v[0] = XXH64_round(state->v[0], XXH_readLE64(state->mem64+0));
state->v[1] = XXH64_round(state->v[1], XXH_readLE64(state->mem64+1));
state->v[2] = XXH64_round(state->v[2], XXH_readLE64(state->mem64+2));
state->v[3] = XXH64_round(state->v[3], XXH_readLE64(state->mem64+3));
p += 32 - state->memsize;
state->memsize = 0;
}
if (p+32 <= bEnd) {
const xxh_u8* const limit = bEnd - 32;
do {
state->v[0] = XXH64_round(state->v[0], XXH_readLE64(p)); p+=8;
state->v[1] = XXH64_round(state->v[1], XXH_readLE64(p)); p+=8;
state->v[2] = XXH64_round(state->v[2], XXH_readLE64(p)); p+=8;
state->v[3] = XXH64_round(state->v[3], XXH_readLE64(p)); p+=8;
} while (p<=limit);
}
if (p < bEnd) {
XXH_memcpy(state->mem64, p, (size_t)(bEnd-p));
state->memsize = (unsigned)(bEnd-p);
}
}
return XXH_OK;
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH64_hash_t XXH64_digest(const XXH64_state_t* state)
{
xxh_u64 h64;
if (state->total_len >= 32) {
h64 = XXH_rotl64(state->v[0], 1) + XXH_rotl64(state->v[1], 7) + XXH_rotl64(state->v[2], 12) + XXH_rotl64(state->v[3], 18);
h64 = XXH64_mergeRound(h64, state->v[0]);
h64 = XXH64_mergeRound(h64, state->v[1]);
h64 = XXH64_mergeRound(h64, state->v[2]);
h64 = XXH64_mergeRound(h64, state->v[3]);
} else {
h64 = state->v[2] /*seed*/ + XXH_PRIME64_5;
}
h64 += (xxh_u64) state->total_len;
return XXH64_finalize(h64, (const xxh_u8*)state->mem64, (size_t)state->total_len, XXH_aligned);
}
/******* Canonical representation *******/
/*! @ingroup xxh64_family */
XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash)
{
/* XXH_STATIC_ASSERT(sizeof(XXH64_canonical_t) == sizeof(XXH64_hash_t)); */
if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap64(hash);
XXH_memcpy(dst, &hash, sizeof(*dst));
}
/*! @ingroup xxh64_family */
XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src)
{
return XXH_readBE64(src);
}
#ifndef XXH_NO_XXH3
/* *********************************************************************
* XXH3
* New generation hash designed for speed on small keys and vectorization
************************************************************************ */
/*!
* @}
* @defgroup xxh3_impl XXH3 implementation
* @ingroup impl
* @{
*/
/* === Compiler specifics === */
#if ((defined(sun) || defined(__sun)) && __cplusplus) /* Solaris includes __STDC_VERSION__ with C++. Tested with GCC 5.5 */
# define XXH_RESTRICT /* disable */
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* >= C99 */
# define XXH_RESTRICT restrict
#else
/* Note: it might be useful to define __restrict or __restrict__ for some C++ compilers */
# define XXH_RESTRICT /* disable */
#endif
#if (defined(__GNUC__) && (__GNUC__ >= 3)) \
|| (defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 800)) \
|| defined(__clang__)
# define XXH_likely(x) __builtin_expect(x, 1)
# define XXH_unlikely(x) __builtin_expect(x, 0)
#else
# define XXH_likely(x) (x)
# define XXH_unlikely(x) (x)
#endif
#if defined(__GNUC__) || defined(__clang__)
# if defined(__ARM_NEON__) || defined(__ARM_NEON) \
|| defined(__aarch64__) || defined(_M_ARM) \
|| defined(_M_ARM64) || defined(_M_ARM64EC)
# define inline __inline__ /* circumvent a clang bug */
# include <arm_neon.h>
# undef inline
# elif defined(__AVX2__)
# include <immintrin.h>
# elif defined(__SSE2__)
# include <emmintrin.h>
# endif
#endif
#if defined(_MSC_VER)
# include <intrin.h>
#endif
/*
* One goal of XXH3 is to make it fast on both 32-bit and 64-bit, while
* remaining a true 64-bit/128-bit hash function.
*
* This is done by prioritizing a subset of 64-bit operations that can be
* emulated without too many steps on the average 32-bit machine.
*
* For example, these two lines seem similar, and run equally fast on 64-bit:
*
* xxh_u64 x;
* x ^= (x >> 47); // good
* x ^= (x >> 13); // bad
*
* However, to a 32-bit machine, there is a major difference.
*
* x ^= (x >> 47) looks like this:
*
* x.lo ^= (x.hi >> (47 - 32));
*
* while x ^= (x >> 13) looks like this:
*
* // note: funnel shifts are not usually cheap.
* x.lo ^= (x.lo >> 13) | (x.hi << (32 - 13));
* x.hi ^= (x.hi >> 13);
*
* The first one is significantly faster than the second, simply because the
* shift is larger than 32. This means:
* - All the bits we need are in the upper 32 bits, so we can ignore the lower
* 32 bits in the shift.
* - The shift result will always fit in the lower 32 bits, and therefore,
* we can ignore the upper 32 bits in the xor.
*
* Thanks to this optimization, XXH3 only requires these features to be efficient:
*
* - Usable unaligned access
* - A 32-bit or 64-bit ALU
* - If 32-bit, a decent ADC instruction
* - A 32 or 64-bit multiply with a 64-bit result
* - For the 128-bit variant, a decent byteswap helps short inputs.
*
* The first two are already required by XXH32, and almost all 32-bit and 64-bit
* platforms which can run XXH32 can run XXH3 efficiently.
*
* Thumb-1, the classic 16-bit only subset of ARM's instruction set, is one
* notable exception.
*
* First of all, Thumb-1 lacks support for the UMULL instruction which
* performs the important long multiply. This means numerous __aeabi_lmul
* calls.
*
* Second of all, the 8 functional registers are just not enough.
* Setup for __aeabi_lmul, byteshift loads, pointers, and all arithmetic need
* Lo registers, and this shuffling results in thousands more MOVs than A32.
*
* A32 and T32 don't have this limitation. They can access all 14 registers,
* do a 32->64 multiply with UMULL, and the flexible operand allowing free
* shifts is helpful, too.
*
* Therefore, we do a quick sanity check.
*
* If compiling Thumb-1 for a target which supports ARM instructions, we will
* emit a warning, as it is not a "sane" platform to compile for.
*
* Usually, if this happens, it is because of an accident and you probably need
* to specify -march, as you likely meant to compile for a newer architecture.
*
* Credit: large sections of the vectorial and asm source code paths
* have been contributed by @easyaspi314
*/
#if defined(__thumb__) && !defined(__thumb2__) && defined(__ARM_ARCH_ISA_ARM)
# warning "XXH3 is highly inefficient without ARM or Thumb-2."
#endif
/* ==========================================
* Vectorization detection
* ========================================== */
#ifdef XXH_DOXYGEN
/*!
* @ingroup tuning
* @brief Overrides the vectorization implementation chosen for XXH3.
*
* Can be defined to 0 to disable SIMD or any of the values mentioned in
* @ref XXH_VECTOR_TYPE.
*
* If this is not defined, it uses predefined macros to determine the best
* implementation.
*/
# define XXH_VECTOR XXH_SCALAR
/*!
* @ingroup tuning
* @brief Possible values for @ref XXH_VECTOR.
*
* Note that these are actually implemented as macros.
*
* If this is not defined, it is detected automatically.
* @ref XXH_X86DISPATCH overrides this.
*/
enum XXH_VECTOR_TYPE /* fake enum */ {
XXH_SCALAR = 0, /*!< Portable scalar version */
XXH_SSE2 = 1, /*!<
* SSE2 for Pentium 4, Opteron, all x86_64.
*
* @note SSE2 is also guaranteed on Windows 10, macOS, and
* Android x86.
*/
XXH_AVX2 = 2, /*!< AVX2 for Haswell and Bulldozer */
XXH_AVX512 = 3, /*!< AVX512 for Skylake and Icelake */
XXH_NEON = 4, /*!< NEON for most ARMv7-A and all AArch64 */
XXH_VSX = 5, /*!< VSX and ZVector for POWER8/z13 (64-bit) */
};
/*!
* @ingroup tuning
* @brief Selects the minimum alignment for XXH3's accumulators.
*
* When using SIMD, this should match the alignment reqired for said vector
* type, so, for example, 32 for AVX2.
*
* Default: Auto detected.
*/
# define XXH_ACC_ALIGN 8
#endif
/* Actual definition */
#ifndef XXH_DOXYGEN
# define XXH_SCALAR 0
# define XXH_SSE2 1
# define XXH_AVX2 2
# define XXH_AVX512 3
# define XXH_NEON 4
# define XXH_VSX 5
#endif
#ifndef XXH_VECTOR /* can be defined on command line */
# if ( \
defined(__ARM_NEON__) || defined(__ARM_NEON) /* gcc */ \
|| defined(_M_ARM) || defined(_M_ARM64) || defined(_M_ARM64EC) /* msvc */ \
) && ( \
defined(_WIN32) || defined(__LITTLE_ENDIAN__) /* little endian only */ \
|| (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
)
# define XXH_VECTOR XXH_NEON
# elif defined(__AVX512F__)
# define XXH_VECTOR XXH_AVX512
# elif defined(__AVX2__)
# define XXH_VECTOR XXH_AVX2
# elif defined(__SSE2__) || defined(_M_AMD64) || defined(_M_X64) || (defined(_M_IX86_FP) && (_M_IX86_FP == 2))
# define XXH_VECTOR XXH_SSE2
# elif (defined(__PPC64__) && defined(__POWER8_VECTOR__)) \
|| (defined(__s390x__) && defined(__VEC__)) \
&& defined(__GNUC__) /* TODO: IBM XL */
# define XXH_VECTOR XXH_VSX
# else
# define XXH_VECTOR XXH_SCALAR
# endif
#endif
/*
* Controls the alignment of the accumulator,
* for compatibility with aligned vector loads, which are usually faster.
*/
#ifndef XXH_ACC_ALIGN
# if defined(XXH_X86DISPATCH)
# define XXH_ACC_ALIGN 64 /* for compatibility with avx512 */
# elif XXH_VECTOR == XXH_SCALAR /* scalar */
# define XXH_ACC_ALIGN 8
# elif XXH_VECTOR == XXH_SSE2 /* sse2 */
# define XXH_ACC_ALIGN 16
# elif XXH_VECTOR == XXH_AVX2 /* avx2 */
# define XXH_ACC_ALIGN 32
# elif XXH_VECTOR == XXH_NEON /* neon */
# define XXH_ACC_ALIGN 16
# elif XXH_VECTOR == XXH_VSX /* vsx */
# define XXH_ACC_ALIGN 16
# elif XXH_VECTOR == XXH_AVX512 /* avx512 */
# define XXH_ACC_ALIGN 64
# endif
#endif
#if defined(XXH_X86DISPATCH) || XXH_VECTOR == XXH_SSE2 \
|| XXH_VECTOR == XXH_AVX2 || XXH_VECTOR == XXH_AVX512
# define XXH_SEC_ALIGN XXH_ACC_ALIGN
#else
# define XXH_SEC_ALIGN 8
#endif
/*
* UGLY HACK:
* GCC usually generates the best code with -O3 for xxHash.
*
* However, when targeting AVX2, it is overzealous in its unrolling resulting
* in code roughly 3/4 the speed of Clang.
*
* There are other issues, such as GCC splitting _mm256_loadu_si256 into
* _mm_loadu_si128 + _mm256_inserti128_si256. This is an optimization which
* only applies to Sandy and Ivy Bridge... which don't even support AVX2.
*
* That is why when compiling the AVX2 version, it is recommended to use either
* -O2 -mavx2 -march=haswell
* or
* -O2 -mavx2 -mno-avx256-split-unaligned-load
* for decent performance, or to use Clang instead.
*
* Fortunately, we can control the first one with a pragma that forces GCC into
* -O2, but the other one we can't control without "failed to inline always
* inline function due to target mismatch" warnings.
*/
#if XXH_VECTOR == XXH_AVX2 /* AVX2 */ \
&& defined(__GNUC__) && !defined(__clang__) /* GCC, not Clang */ \
&& defined(__OPTIMIZE__) && !defined(__OPTIMIZE_SIZE__) /* respect -O0 and -Os */
# pragma GCC push_options
# pragma GCC optimize("-O2")
#endif
#if XXH_VECTOR == XXH_NEON
/*
* NEON's setup for vmlal_u32 is a little more complicated than it is on
* SSE2, AVX2, and VSX.
*
* While PMULUDQ and VMULEUW both perform a mask, VMLAL.U32 performs an upcast.
*
* To do the same operation, the 128-bit 'Q' register needs to be split into
* two 64-bit 'D' registers, performing this operation::
*
* [ a | b ]
* | '---------. .--------' |
* | x |
* | .---------' '--------. |
* [ a & 0xFFFFFFFF | b & 0xFFFFFFFF ],[ a >> 32 | b >> 32 ]
*
* Due to significant changes in aarch64, the fastest method for aarch64 is
* completely different than the fastest method for ARMv7-A.
*
* ARMv7-A treats D registers as unions overlaying Q registers, so modifying
* D11 will modify the high half of Q5. This is similar to how modifying AH
* will only affect bits 8-15 of AX on x86.
*
* VZIP takes two registers, and puts even lanes in one register and odd lanes
* in the other.
*
* On ARMv7-A, this strangely modifies both parameters in place instead of
* taking the usual 3-operand form.
*
* Therefore, if we want to do this, we can simply use a D-form VZIP.32 on the
* lower and upper halves of the Q register to end up with the high and low
* halves where we want - all in one instruction.
*
* vzip.32 d10, d11 @ d10 = { d10[0], d11[0] }; d11 = { d10[1], d11[1] }
*
* Unfortunately we need inline assembly for this: Instructions modifying two
* registers at once is not possible in GCC or Clang's IR, and they have to
* create a copy.
*
* aarch64 requires a different approach.
*
* In order to make it easier to write a decent compiler for aarch64, many
* quirks were removed, such as conditional execution.
*
* NEON was also affected by this.
*
* aarch64 cannot access the high bits of a Q-form register, and writes to a
* D-form register zero the high bits, similar to how writes to W-form scalar
* registers (or DWORD registers on x86_64) work.
*
* The formerly free vget_high intrinsics now require a vext (with a few
* exceptions)
*
* Additionally, VZIP was replaced by ZIP1 and ZIP2, which are the equivalent
* of PUNPCKL* and PUNPCKH* in SSE, respectively, in order to only modify one
* operand.
*
* The equivalent of the VZIP.32 on the lower and upper halves would be this
* mess:
*
* ext v2.4s, v0.4s, v0.4s, #2 // v2 = { v0[2], v0[3], v0[0], v0[1] }
* zip1 v1.2s, v0.2s, v2.2s // v1 = { v0[0], v2[0] }
* zip2 v0.2s, v0.2s, v1.2s // v0 = { v0[1], v2[1] }
*
* Instead, we use a literal downcast, vmovn_u64 (XTN), and vshrn_n_u64 (SHRN):
*
* shrn v1.2s, v0.2d, #32 // v1 = (uint32x2_t)(v0 >> 32);
* xtn v0.2s, v0.2d // v0 = (uint32x2_t)(v0 & 0xFFFFFFFF);
*
* This is available on ARMv7-A, but is less efficient than a single VZIP.32.
*/
/*!
* Function-like macro:
* void XXH_SPLIT_IN_PLACE(uint64x2_t &in, uint32x2_t &outLo, uint32x2_t &outHi)
* {
* outLo = (uint32x2_t)(in & 0xFFFFFFFF);
* outHi = (uint32x2_t)(in >> 32);
* in = UNDEFINED;
* }
*/
# if !defined(XXH_NO_VZIP_HACK) /* define to disable */ \
&& (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__arm__) || defined(__thumb__) || defined(_M_ARM))
# define XXH_SPLIT_IN_PLACE(in, outLo, outHi) \
do { \
/* Undocumented GCC/Clang operand modifier: %e0 = lower D half, %f0 = upper D half */ \
/* https://github.com/gcc-mirror/gcc/blob/38cf91e5/gcc/config/arm/arm.c#L22486 */ \
/* https://github.com/llvm-mirror/llvm/blob/2c4ca683/lib/Target/ARM/ARMAsmPrinter.cpp#L399 */ \
__asm__("vzip.32 %e0, %f0" : "+w" (in)); \
(outLo) = vget_low_u32 (vreinterpretq_u32_u64(in)); \
(outHi) = vget_high_u32(vreinterpretq_u32_u64(in)); \
} while (0)
# else
# define XXH_SPLIT_IN_PLACE(in, outLo, outHi) \
do { \
(outLo) = vmovn_u64 (in); \
(outHi) = vshrn_n_u64 ((in), 32); \
} while (0)
# endif
/*!
* @ingroup tuning
* @brief Controls the NEON to scalar ratio for XXH3
*
* On AArch64 when not optimizing for size, XXH3 will run 6 lanes using NEON and
* 2 lanes on scalar by default.
*
* This can be set to 2, 4, 6, or 8. ARMv7 will default to all 8 NEON lanes, as the
* emulated 64-bit arithmetic is too slow.
*
* Modern ARM CPUs are _very_ sensitive to how their pipelines are used.
*
* For example, the Cortex-A73 can dispatch 3 micro-ops per cycle, but it can't
* have more than 2 NEON (F0/F1) micro-ops. If you are only using NEON instructions,
* you are only using 2/3 of the CPU bandwidth.
*
* This is even more noticable on the more advanced cores like the A76 which
* can dispatch 8 micro-ops per cycle, but still only 2 NEON micro-ops at once.
*
* Therefore, @ref XXH3_NEON_LANES lanes will be processed using NEON, and the
* remaining lanes will use scalar instructions. This improves the bandwidth
* and also gives the integer pipelines something to do besides twiddling loop
* counters and pointers.
*
* This change benefits CPUs with large micro-op buffers without negatively affecting
* other CPUs:
*
* | Chipset | Dispatch type | NEON only | 6:2 hybrid | Diff. |
* |:----------------------|:--------------------|----------:|-----------:|------:|
* | Snapdragon 730 (A76) | 2 NEON/8 micro-ops | 8.8 GB/s | 10.1 GB/s | ~16% |
* | Snapdragon 835 (A73) | 2 NEON/3 micro-ops | 5.1 GB/s | 5.3 GB/s | ~5% |
* | Marvell PXA1928 (A53) | In-order dual-issue | 1.9 GB/s | 1.9 GB/s | 0% |
*
* It also seems to fix some bad codegen on GCC, making it almost as fast as clang.
*
* @see XXH3_accumulate_512_neon()
*/
# ifndef XXH3_NEON_LANES
# if (defined(__aarch64__) || defined(__arm64__) || defined(_M_ARM64) || defined(_M_ARM64EC)) \
&& !defined(__OPTIMIZE_SIZE__)
# define XXH3_NEON_LANES 6
# else
# define XXH3_NEON_LANES XXH_ACC_NB
# endif
# endif
#endif /* XXH_VECTOR == XXH_NEON */
/*
* VSX and Z Vector helpers.
*
* This is very messy, and any pull requests to clean this up are welcome.
*
* There are a lot of problems with supporting VSX and s390x, due to
* inconsistent intrinsics, spotty coverage, and multiple endiannesses.
*/
#if XXH_VECTOR == XXH_VSX
# if defined(__s390x__)
# include <s390intrin.h>
# else
/* gcc's altivec.h can have the unwanted consequence to unconditionally
* #define bool, vector, and pixel keywords,
* with bad consequences for programs already using these keywords for other purposes.
* The paragraph defining these macros is skipped when __APPLE_ALTIVEC__ is defined.
* __APPLE_ALTIVEC__ is _generally_ defined automatically by the compiler,
* but it seems that, in some cases, it isn't.
* Force the build macro to be defined, so that keywords are not altered.
*/
# if defined(__GNUC__) && !defined(__APPLE_ALTIVEC__)
# define __APPLE_ALTIVEC__
# endif
# include <altivec.h>
# endif
#endif /* XXH_STATIC_LINKING_ONLY && XXH_STATIC_H_3543687687345 */
typedef __vector unsigned long long xxh_u64x2;
typedef __vector unsigned char xxh_u8x16;
typedef __vector unsigned xxh_u32x4;
# ifndef XXH_VSX_BE
# if defined(__BIG_ENDIAN__) \
|| (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
# define XXH_VSX_BE 1
# elif defined(__VEC_ELEMENT_REG_ORDER__) && __VEC_ELEMENT_REG_ORDER__ == __ORDER_BIG_ENDIAN__
# warning "-maltivec=be is not recommended. Please use native endianness."
# define XXH_VSX_BE 1
# else
# define XXH_VSX_BE 0
# endif
# endif /* !defined(XXH_VSX_BE) */
# if XXH_VSX_BE
# if defined(__POWER9_VECTOR__) || (defined(__clang__) && defined(__s390x__))
# define XXH_vec_revb vec_revb
# else
/*!
* A polyfill for POWER9's vec_revb().
*/
XXH_FORCE_INLINE xxh_u64x2 XXH_vec_revb(xxh_u64x2 val)
{
xxh_u8x16 const vByteSwap = { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, 0x09, 0x08 };
return vec_perm(val, val, vByteSwap);
}
# endif
# endif /* XXH_VSX_BE */
/*!
* Performs an unaligned vector load and byte swaps it on big endian.
*/
XXH_FORCE_INLINE xxh_u64x2 XXH_vec_loadu(const void *ptr)
{
xxh_u64x2 ret;
XXH_memcpy(&ret, ptr, sizeof(xxh_u64x2));
# if XXH_VSX_BE
ret = XXH_vec_revb(ret);
# endif
return ret;
}
/*
* vec_mulo and vec_mule are very problematic intrinsics on PowerPC
*
* These intrinsics weren't added until GCC 8, despite existing for a while,
* and they are endian dependent. Also, their meaning swap depending on version.
* */
# if defined(__s390x__)
/* s390x is always big endian, no issue on this platform */
# define XXH_vec_mulo vec_mulo
# define XXH_vec_mule vec_mule
# elif defined(__clang__) && XXH_HAS_BUILTIN(__builtin_altivec_vmuleuw)
/* Clang has a better way to control this, we can just use the builtin which doesn't swap. */
# define XXH_vec_mulo __builtin_altivec_vmulouw
# define XXH_vec_mule __builtin_altivec_vmuleuw
# else
/* gcc needs inline assembly */
/* Adapted from https://github.com/google/highwayhash/blob/master/highwayhash/hh_vsx.h. */
XXH_FORCE_INLINE xxh_u64x2 XXH_vec_mulo(xxh_u32x4 a, xxh_u32x4 b)
{
xxh_u64x2 result;
__asm__("vmulouw %0, %1, %2" : "=v" (result) : "v" (a), "v" (b));
return result;
}
XXH_FORCE_INLINE xxh_u64x2 XXH_vec_mule(xxh_u32x4 a, xxh_u32x4 b)
{
xxh_u64x2 result;
__asm__("vmuleuw %0, %1, %2" : "=v" (result) : "v" (a), "v" (b));
return result;
}
# endif /* XXH_vec_mulo, XXH_vec_mule */
#endif /* XXH_VECTOR == XXH_VSX */
/* prefetch
* can be disabled, by declaring XXH_NO_PREFETCH build macro */
#if defined(XXH_NO_PREFETCH)
# define XXH_PREFETCH(ptr) (void)(ptr) /* disabled */
#else
# if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86)) /* _mm_prefetch() not defined outside of x86/x64 */
# include <mmintrin.h> /* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */
# define XXH_PREFETCH(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T0)
# elif defined(__GNUC__) && ( (__GNUC__ >= 4) || ( (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1) ) )
# define XXH_PREFETCH(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */)
# else
# define XXH_PREFETCH(ptr) (void)(ptr) /* disabled */
# endif
#endif /* XXH_NO_PREFETCH */
/* ==========================================
* XXH3 default settings
* ========================================== */
#define XXH_SECRET_DEFAULT_SIZE 192 /* minimum XXH3_SECRET_SIZE_MIN */
#if (XXH_SECRET_DEFAULT_SIZE < XXH3_SECRET_SIZE_MIN)
# error "default keyset is not large enough"
#endif
/*! Pseudorandom secret taken directly from FARSH. */
XXH_ALIGN(64) static const xxh_u8 XXH3_kSecret[XXH_SECRET_DEFAULT_SIZE] = {
0xb8, 0xfe, 0x6c, 0x39, 0x23, 0xa4, 0x4b, 0xbe, 0x7c, 0x01, 0x81, 0x2c, 0xf7, 0x21, 0xad, 0x1c,
0xde, 0xd4, 0x6d, 0xe9, 0x83, 0x90, 0x97, 0xdb, 0x72, 0x40, 0xa4, 0xa4, 0xb7, 0xb3, 0x67, 0x1f,
0xcb, 0x79, 0xe6, 0x4e, 0xcc, 0xc0, 0xe5, 0x78, 0x82, 0x5a, 0xd0, 0x7d, 0xcc, 0xff, 0x72, 0x21,
0xb8, 0x08, 0x46, 0x74, 0xf7, 0x43, 0x24, 0x8e, 0xe0, 0x35, 0x90, 0xe6, 0x81, 0x3a, 0x26, 0x4c,
0x3c, 0x28, 0x52, 0xbb, 0x91, 0xc3, 0x00, 0xcb, 0x88, 0xd0, 0x65, 0x8b, 0x1b, 0x53, 0x2e, 0xa3,
0x71, 0x64, 0x48, 0x97, 0xa2, 0x0d, 0xf9, 0x4e, 0x38, 0x19, 0xef, 0x46, 0xa9, 0xde, 0xac, 0xd8,
0xa8, 0xfa, 0x76, 0x3f, 0xe3, 0x9c, 0x34, 0x3f, 0xf9, 0xdc, 0xbb, 0xc7, 0xc7, 0x0b, 0x4f, 0x1d,
0x8a, 0x51, 0xe0, 0x4b, 0xcd, 0xb4, 0x59, 0x31, 0xc8, 0x9f, 0x7e, 0xc9, 0xd9, 0x78, 0x73, 0x64,
0xea, 0xc5, 0xac, 0x83, 0x34, 0xd3, 0xeb, 0xc3, 0xc5, 0x81, 0xa0, 0xff, 0xfa, 0x13, 0x63, 0xeb,
0x17, 0x0d, 0xdd, 0x51, 0xb7, 0xf0, 0xda, 0x49, 0xd3, 0x16, 0x55, 0x26, 0x29, 0xd4, 0x68, 0x9e,
0x2b, 0x16, 0xbe, 0x58, 0x7d, 0x47, 0xa1, 0xfc, 0x8f, 0xf8, 0xb8, 0xd1, 0x7a, 0xd0, 0x31, 0xce,
0x45, 0xcb, 0x3a, 0x8f, 0x95, 0x16, 0x04, 0x28, 0xaf, 0xd7, 0xfb, 0xca, 0xbb, 0x4b, 0x40, 0x7e,
};
#ifdef XXH_OLD_NAMES
# define kSecret XXH3_kSecret
#endif
#ifdef XXH_DOXYGEN
/*!
* @brief Calculates a 32-bit to 64-bit long multiply.
*
* Implemented as a macro.
*
* Wraps `__emulu` on MSVC x86 because it tends to call `__allmul` when it doesn't
* need to (but it shouldn't need to anyways, it is about 7 instructions to do
* a 64x64 multiply...). Since we know that this will _always_ emit `MULL`, we
* use that instead of the normal method.
*
* If you are compiling for platforms like Thumb-1 and don't have a better option,
* you may also want to write your own long multiply routine here.
*
* @param x, y Numbers to be multiplied
* @return 64-bit product of the low 32 bits of @p x and @p y.
*/
XXH_FORCE_INLINE xxh_u64
XXH_mult32to64(xxh_u64 x, xxh_u64 y)
{
return (x & 0xFFFFFFFF) * (y & 0xFFFFFFFF);
}
#elif defined(_MSC_VER) && defined(_M_IX86)
# define XXH_mult32to64(x, y) __emulu((unsigned)(x), (unsigned)(y))
#else
/*
* Downcast + upcast is usually better than masking on older compilers like
* GCC 4.2 (especially 32-bit ones), all without affecting newer compilers.
*
* The other method, (x & 0xFFFFFFFF) * (y & 0xFFFFFFFF), will AND both operands
* and perform a full 64x64 multiply -- entirely redundant on 32-bit.
*/
# define XXH_mult32to64(x, y) ((xxh_u64)(xxh_u32)(x) * (xxh_u64)(xxh_u32)(y))
#endif
/*!
* @brief Calculates a 64->128-bit long multiply.
*
* Uses `__uint128_t` and `_umul128` if available, otherwise uses a scalar
* version.
*
* @param lhs , rhs The 64-bit integers to be multiplied
* @return The 128-bit result represented in an @ref XXH128_hash_t.
*/
static XXH128_hash_t
XXH_mult64to128(xxh_u64 lhs, xxh_u64 rhs)
{
/*
* GCC/Clang __uint128_t method.
*
* On most 64-bit targets, GCC and Clang define a __uint128_t type.
* This is usually the best way as it usually uses a native long 64-bit
* multiply, such as MULQ on x86_64 or MUL + UMULH on aarch64.
*
* Usually.
*
* Despite being a 32-bit platform, Clang (and emscripten) define this type
* despite not having the arithmetic for it. This results in a laggy
* compiler builtin call which calculates a full 128-bit multiply.
* In that case it is best to use the portable one.
* https://github.com/Cyan4973/xxHash/issues/211#issuecomment-515575677
*/
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__wasm__) \
&& defined(__SIZEOF_INT128__) \
|| (defined(_INTEGRAL_MAX_BITS) && _INTEGRAL_MAX_BITS >= 128)
__uint128_t const product = (__uint128_t)lhs * (__uint128_t)rhs;
XXH128_hash_t r128;
r128.low64 = (xxh_u64)(product);
r128.high64 = (xxh_u64)(product >> 64);
return r128;
/*
* MSVC for x64's _umul128 method.
*
* xxh_u64 _umul128(xxh_u64 Multiplier, xxh_u64 Multiplicand, xxh_u64 *HighProduct);
*
* This compiles to single operand MUL on x64.
*/
#elif (defined(_M_X64) || defined(_M_IA64)) && !defined(_M_ARM64EC)
#ifndef _MSC_VER
# pragma intrinsic(_umul128)
#endif
xxh_u64 product_high;
xxh_u64 const product_low = _umul128(lhs, rhs, &product_high);
XXH128_hash_t r128;
r128.low64 = product_low;
r128.high64 = product_high;
return r128;
/*
* MSVC for ARM64's __umulh method.
*
* This compiles to the same MUL + UMULH as GCC/Clang's __uint128_t method.
*/
#elif defined(_M_ARM64) || defined(_M_ARM64EC)
#ifndef _MSC_VER
# pragma intrinsic(__umulh)
#endif
XXH128_hash_t r128;
r128.low64 = lhs * rhs;
r128.high64 = __umulh(lhs, rhs);
return r128;
#else
/*
* Portable scalar method. Optimized for 32-bit and 64-bit ALUs.
*
* This is a fast and simple grade school multiply, which is shown below
* with base 10 arithmetic instead of base 0x100000000.
*
* 9 3 // D2 lhs = 93
* x 7 5 // D2 rhs = 75
* ----------
* 1 5 // D2 lo_lo = (93 % 10) * (75 % 10) = 15
* 4 5 | // D2 hi_lo = (93 / 10) * (75 % 10) = 45
* 2 1 | // D2 lo_hi = (93 % 10) * (75 / 10) = 21
* + 6 3 | | // D2 hi_hi = (93 / 10) * (75 / 10) = 63
* ---------
* 2 7 | // D2 cross = (15 / 10) + (45 % 10) + 21 = 27
* + 6 7 | | // D2 upper = (27 / 10) + (45 / 10) + 63 = 67
* ---------
* 6 9 7 5 // D4 res = (27 * 10) + (15 % 10) + (67 * 100) = 6975
*
* The reasons for adding the products like this are:
* 1. It avoids manual carry tracking. Just like how
* (9 * 9) + 9 + 9 = 99, the same applies with this for UINT64_MAX.
* This avoids a lot of complexity.
*
* 2. It hints for, and on Clang, compiles to, the powerful UMAAL
* instruction available in ARM's Digital Signal Processing extension
* in 32-bit ARMv6 and later, which is shown below:
*
* void UMAAL(xxh_u32 *RdLo, xxh_u32 *RdHi, xxh_u32 Rn, xxh_u32 Rm)
* {
* xxh_u64 product = (xxh_u64)*RdLo * (xxh_u64)*RdHi + Rn + Rm;
* *RdLo = (xxh_u32)(product & 0xFFFFFFFF);
* *RdHi = (xxh_u32)(product >> 32);
* }
*
* This instruction was designed for efficient long multiplication, and
* allows this to be calculated in only 4 instructions at speeds
* comparable to some 64-bit ALUs.
*
* 3. It isn't terrible on other platforms. Usually this will be a couple
* of 32-bit ADD/ADCs.
*/
/* First calculate all of the cross products. */
xxh_u64 const lo_lo = XXH_mult32to64(lhs & 0xFFFFFFFF, rhs & 0xFFFFFFFF);
xxh_u64 const hi_lo = XXH_mult32to64(lhs >> 32, rhs & 0xFFFFFFFF);
xxh_u64 const lo_hi = XXH_mult32to64(lhs & 0xFFFFFFFF, rhs >> 32);
xxh_u64 const hi_hi = XXH_mult32to64(lhs >> 32, rhs >> 32);
/* Now add the products together. These will never overflow. */
xxh_u64 const cross = (lo_lo >> 32) + (hi_lo & 0xFFFFFFFF) + lo_hi;
xxh_u64 const upper = (hi_lo >> 32) + (cross >> 32) + hi_hi;
xxh_u64 const lower = (cross << 32) | (lo_lo & 0xFFFFFFFF);
XXH128_hash_t r128;
r128.low64 = lower;
r128.high64 = upper;
return r128;
#endif
}
/*!
* @brief Calculates a 64-bit to 128-bit multiply, then XOR folds it.
*
* The reason for the separate function is to prevent passing too many structs
* around by value. This will hopefully inline the multiply, but we don't force it.
*
* @param lhs , rhs The 64-bit integers to multiply
* @return The low 64 bits of the product XOR'd by the high 64 bits.
* @see XXH_mult64to128()
*/
static xxh_u64
XXH3_mul128_fold64(xxh_u64 lhs, xxh_u64 rhs)
{
XXH128_hash_t product = XXH_mult64to128(lhs, rhs);
return product.low64 ^ product.high64;
}
/*! Seems to produce slightly better code on GCC for some reason. */
XXH_FORCE_INLINE xxh_u64 XXH_xorshift64(xxh_u64 v64, int shift)
{
XXH_ASSERT(0 <= shift && shift < 64);
return v64 ^ (v64 >> shift);
}
/*
* This is a fast avalanche stage,
* suitable when input bits are already partially mixed
*/
static XXH64_hash_t XXH3_avalanche(xxh_u64 h64)
{
h64 = XXH_xorshift64(h64, 37);
h64 *= 0x165667919E3779F9ULL;
h64 = XXH_xorshift64(h64, 32);
return h64;
}
/*
* This is a stronger avalanche,
* inspired by Pelle Evensen's rrmxmx
* preferable when input has not been previously mixed
*/
static XXH64_hash_t XXH3_rrmxmx(xxh_u64 h64, xxh_u64 len)
{
/* this mix is inspired by Pelle Evensen's rrmxmx */
h64 ^= XXH_rotl64(h64, 49) ^ XXH_rotl64(h64, 24);
h64 *= 0x9FB21C651E98DF25ULL;
h64 ^= (h64 >> 35) + len ;
h64 *= 0x9FB21C651E98DF25ULL;
return XXH_xorshift64(h64, 28);
}
/* ==========================================
* Short keys
* ==========================================
* One of the shortcomings of XXH32 and XXH64 was that their performance was
* sub-optimal on short lengths. It used an iterative algorithm which strongly
* favored lengths that were a multiple of 4 or 8.
*
* Instead of iterating over individual inputs, we use a set of single shot
* functions which piece together a range of lengths and operate in constant time.
*
* Additionally, the number of multiplies has been significantly reduced. This
* reduces latency, especially when emulating 64-bit multiplies on 32-bit.
*
* Depending on the platform, this may or may not be faster than XXH32, but it
* is almost guaranteed to be faster than XXH64.
*/
/*
* At very short lengths, there isn't enough input to fully hide secrets, or use
* the entire secret.
*
* There is also only a limited amount of mixing we can do before significantly
* impacting performance.
*
* Therefore, we use different sections of the secret and always mix two secret
* samples with an XOR. This should have no effect on performance on the
* seedless or withSeed variants because everything _should_ be constant folded
* by modern compilers.
*
* The XOR mixing hides individual parts of the secret and increases entropy.
*
* This adds an extra layer of strength for custom secrets.
*/
XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_1to3_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(input != NULL);
XXH_ASSERT(1 <= len && len <= 3);
XXH_ASSERT(secret != NULL);
/*
* len = 1: combined = { input[0], 0x01, input[0], input[0] }
* len = 2: combined = { input[1], 0x02, input[0], input[1] }
* len = 3: combined = { input[2], 0x03, input[0], input[1] }
*/
{ xxh_u8 const c1 = input[0];
xxh_u8 const c2 = input[len >> 1];
xxh_u8 const c3 = input[len - 1];
xxh_u32 const combined = ((xxh_u32)c1 << 16) | ((xxh_u32)c2 << 24)
| ((xxh_u32)c3 << 0) | ((xxh_u32)len << 8);
xxh_u64 const bitflip = (XXH_readLE32(secret) ^ XXH_readLE32(secret+4)) + seed;
xxh_u64 const keyed = (xxh_u64)combined ^ bitflip;
return XXH64_avalanche(keyed);
}
}
XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_4to8_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(input != NULL);
XXH_ASSERT(secret != NULL);
XXH_ASSERT(4 <= len && len <= 8);
seed ^= (xxh_u64)XXH_swap32((xxh_u32)seed) << 32;
{ xxh_u32 const input1 = XXH_readLE32(input);
xxh_u32 const input2 = XXH_readLE32(input + len - 4);
xxh_u64 const bitflip = (XXH_readLE64(secret+8) ^ XXH_readLE64(secret+16)) - seed;
xxh_u64 const input64 = input2 + (((xxh_u64)input1) << 32);
xxh_u64 const keyed = input64 ^ bitflip;
return XXH3_rrmxmx(keyed, len);
}
}
XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_9to16_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(input != NULL);
XXH_ASSERT(secret != NULL);
XXH_ASSERT(9 <= len && len <= 16);
{ xxh_u64 const bitflip1 = (XXH_readLE64(secret+24) ^ XXH_readLE64(secret+32)) + seed;
xxh_u64 const bitflip2 = (XXH_readLE64(secret+40) ^ XXH_readLE64(secret+48)) - seed;
xxh_u64 const input_lo = XXH_readLE64(input) ^ bitflip1;
xxh_u64 const input_hi = XXH_readLE64(input + len - 8) ^ bitflip2;
xxh_u64 const acc = len
+ XXH_swap64(input_lo) + input_hi
+ XXH3_mul128_fold64(input_lo, input_hi);
return XXH3_avalanche(acc);
}
}
XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_0to16_64b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(len <= 16);
{ if (XXH_likely(len > 8)) return XXH3_len_9to16_64b(input, len, secret, seed);
if (XXH_likely(len >= 4)) return XXH3_len_4to8_64b(input, len, secret, seed);
if (len) return XXH3_len_1to3_64b(input, len, secret, seed);
return XXH64_avalanche(seed ^ (XXH_readLE64(secret+56) ^ XXH_readLE64(secret+64)));
}
}
/*
* DISCLAIMER: There are known *seed-dependent* multicollisions here due to
* multiplication by zero, affecting hashes of lengths 17 to 240.
*
* However, they are very unlikely.
*
* Keep this in mind when using the unseeded XXH3_64bits() variant: As with all
* unseeded non-cryptographic hashes, it does not attempt to defend itself
* against specially crafted inputs, only random inputs.
*
* Compared to classic UMAC where a 1 in 2^31 chance of 4 consecutive bytes
* cancelling out the secret is taken an arbitrary number of times (addressed
* in XXH3_accumulate_512), this collision is very unlikely with random inputs
* and/or proper seeding:
*
* This only has a 1 in 2^63 chance of 8 consecutive bytes cancelling out, in a
* function that is only called up to 16 times per hash with up to 240 bytes of
* input.
*
* This is not too bad for a non-cryptographic hash function, especially with
* only 64 bit outputs.
*
* The 128-bit variant (which trades some speed for strength) is NOT affected
* by this, although it is always a good idea to use a proper seed if you care
* about strength.
*/
XXH_FORCE_INLINE xxh_u64 XXH3_mix16B(const xxh_u8* XXH_RESTRICT input,
const xxh_u8* XXH_RESTRICT secret, xxh_u64 seed64)
{
#if defined(__GNUC__) && !defined(__clang__) /* GCC, not Clang */ \
&& defined(__i386__) && defined(__SSE2__) /* x86 + SSE2 */ \
&& !defined(XXH_ENABLE_AUTOVECTORIZE) /* Define to disable like XXH32 hack */
/*
* UGLY HACK:
* GCC for x86 tends to autovectorize the 128-bit multiply, resulting in
* slower code.
*
* By forcing seed64 into a register, we disrupt the cost model and
* cause it to scalarize. See `XXH32_round()`
*
* FIXME: Clang's output is still _much_ faster -- On an AMD Ryzen 3600,
* XXH3_64bits @ len=240 runs at 4.6 GB/s with Clang 9, but 3.3 GB/s on
* GCC 9.2, despite both emitting scalar code.
*
* GCC generates much better scalar code than Clang for the rest of XXH3,
* which is why finding a more optimal codepath is an interest.
*/
XXH_COMPILER_GUARD(seed64);
#endif
{ xxh_u64 const input_lo = XXH_readLE64(input);
xxh_u64 const input_hi = XXH_readLE64(input+8);
return XXH3_mul128_fold64(
input_lo ^ (XXH_readLE64(secret) + seed64),
input_hi ^ (XXH_readLE64(secret+8) - seed64)
);
}
}
/* For mid range keys, XXH3 uses a Mum-hash variant. */
XXH_FORCE_INLINE XXH64_hash_t
XXH3_len_17to128_64b(const xxh_u8* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH64_hash_t seed)
{
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize;
XXH_ASSERT(16 < len && len <= 128);
{ xxh_u64 acc = len * XXH_PRIME64_1;
if (len > 32) {
if (len > 64) {
if (len > 96) {
acc += XXH3_mix16B(input+48, secret+96, seed);
acc += XXH3_mix16B(input+len-64, secret+112, seed);
}
acc += XXH3_mix16B(input+32, secret+64, seed);
acc += XXH3_mix16B(input+len-48, secret+80, seed);
}
acc += XXH3_mix16B(input+16, secret+32, seed);
acc += XXH3_mix16B(input+len-32, secret+48, seed);
}
acc += XXH3_mix16B(input+0, secret+0, seed);
acc += XXH3_mix16B(input+len-16, secret+16, seed);
return XXH3_avalanche(acc);
}
}
#define XXH3_MIDSIZE_MAX 240
XXH_NO_INLINE XXH64_hash_t
XXH3_len_129to240_64b(const xxh_u8* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH64_hash_t seed)
{
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize;
XXH_ASSERT(128 < len && len <= XXH3_MIDSIZE_MAX);
#define XXH3_MIDSIZE_STARTOFFSET 3
#define XXH3_MIDSIZE_LASTOFFSET 17
{ xxh_u64 acc = len * XXH_PRIME64_1;
int const nbRounds = (int)len / 16;
int i;
for (i=0; i<8; i++) {
acc += XXH3_mix16B(input+(16*i), secret+(16*i), seed);
}
acc = XXH3_avalanche(acc);
XXH_ASSERT(nbRounds >= 8);
#if defined(__clang__) /* Clang */ \
&& (defined(__ARM_NEON) || defined(__ARM_NEON__)) /* NEON */ \
&& !defined(XXH_ENABLE_AUTOVECTORIZE) /* Define to disable */
/*
* UGLY HACK:
* Clang for ARMv7-A tries to vectorize this loop, similar to GCC x86.
* In everywhere else, it uses scalar code.
*
* For 64->128-bit multiplies, even if the NEON was 100% optimal, it
* would still be slower than UMAAL (see XXH_mult64to128).
*
* Unfortunately, Clang doesn't handle the long multiplies properly and
* converts them to the nonexistent "vmulq_u64" intrinsic, which is then
* scalarized into an ugly mess of VMOV.32 instructions.
*
* This mess is difficult to avoid without turning autovectorization
* off completely, but they are usually relatively minor and/or not
* worth it to fix.
*
* This loop is the easiest to fix, as unlike XXH32, this pragma
* _actually works_ because it is a loop vectorization instead of an
* SLP vectorization.
*/
#pragma clang loop vectorize(disable)
#endif
for (i=8 ; i < nbRounds; i++) {
acc += XXH3_mix16B(input+(16*i), secret+(16*(i-8)) + XXH3_MIDSIZE_STARTOFFSET, seed);
}
/* last bytes */
acc += XXH3_mix16B(input + len - 16, secret + XXH3_SECRET_SIZE_MIN - XXH3_MIDSIZE_LASTOFFSET, seed);
return XXH3_avalanche(acc);
}
}
/* ======= Long Keys ======= */
#define XXH_STRIPE_LEN 64
#define XXH_SECRET_CONSUME_RATE 8 /* nb of secret bytes consumed at each accumulation */
#define XXH_ACC_NB (XXH_STRIPE_LEN / sizeof(xxh_u64))
#ifdef XXH_OLD_NAMES
# define STRIPE_LEN XXH_STRIPE_LEN
# define ACC_NB XXH_ACC_NB
#endif
XXH_FORCE_INLINE void XXH_writeLE64(void* dst, xxh_u64 v64)
{
if (!XXH_CPU_LITTLE_ENDIAN) v64 = XXH_swap64(v64);
XXH_memcpy(dst, &v64, sizeof(v64));
}
/* Several intrinsic functions below are supposed to accept __int64 as argument,
* as documented in https://software.intel.com/sites/landingpage/IntrinsicsGuide/ .
* However, several environments do not define __int64 type,
* requiring a workaround.
*/
#if !defined (__VMS) \
&& (defined (__cplusplus) \
|| (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
typedef int64_t xxh_i64;
#else
/* the following type must have a width of 64-bit */
typedef long long xxh_i64;
#endif
/*
* XXH3_accumulate_512 is the tightest loop for long inputs, and it is the most optimized.
*
* It is a hardened version of UMAC, based off of FARSH's implementation.
*
* This was chosen because it adapts quite well to 32-bit, 64-bit, and SIMD
* implementations, and it is ridiculously fast.
*
* We harden it by mixing the original input to the accumulators as well as the product.
*
* This means that in the (relatively likely) case of a multiply by zero, the
* original input is preserved.
*
* On 128-bit inputs, we swap 64-bit pairs when we add the input to improve
* cross-pollination, as otherwise the upper and lower halves would be
* essentially independent.
*
* This doesn't matter on 64-bit hashes since they all get merged together in
* the end, so we skip the extra step.
*
* Both XXH3_64bits and XXH3_128bits use this subroutine.
*/
#if (XXH_VECTOR == XXH_AVX512) \
|| (defined(XXH_DISPATCH_AVX512) && XXH_DISPATCH_AVX512 != 0)
#ifndef XXH_TARGET_AVX512
# define XXH_TARGET_AVX512 /* disable attribute target */
#endif
XXH_FORCE_INLINE XXH_TARGET_AVX512 void
XXH3_accumulate_512_avx512(void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
__m512i* const xacc = (__m512i *) acc;
XXH_ASSERT((((size_t)acc) & 63) == 0);
XXH_STATIC_ASSERT(XXH_STRIPE_LEN == sizeof(__m512i));
{
/* data_vec = input[0]; */
__m512i const data_vec = _mm512_loadu_si512 (input);
/* key_vec = secret[0]; */
__m512i const key_vec = _mm512_loadu_si512 (secret);
/* data_key = data_vec ^ key_vec; */
__m512i const data_key = _mm512_xor_si512 (data_vec, key_vec);
/* data_key_lo = data_key >> 32; */
__m512i const data_key_lo = _mm512_shuffle_epi32 (data_key, (_MM_PERM_ENUM)_MM_SHUFFLE(0, 3, 0, 1));
/* product = (data_key & 0xffffffff) * (data_key_lo & 0xffffffff); */
__m512i const product = _mm512_mul_epu32 (data_key, data_key_lo);
/* xacc[0] += swap(data_vec); */
__m512i const data_swap = _mm512_shuffle_epi32(data_vec, (_MM_PERM_ENUM)_MM_SHUFFLE(1, 0, 3, 2));
__m512i const sum = _mm512_add_epi64(*xacc, data_swap);
/* xacc[0] += product; */
*xacc = _mm512_add_epi64(product, sum);
}
}
/*
* XXH3_scrambleAcc: Scrambles the accumulators to improve mixing.
*
* Multiplication isn't perfect, as explained by Google in HighwayHash:
*
* // Multiplication mixes/scrambles bytes 0-7 of the 64-bit result to
* // varying degrees. In descending order of goodness, bytes
* // 3 4 2 5 1 6 0 7 have quality 228 224 164 160 100 96 36 32.
* // As expected, the upper and lower bytes are much worse.
*
* Source: https://github.com/google/highwayhash/blob/0aaf66b/highwayhash/hh_avx2.h#L291
*
* Since our algorithm uses a pseudorandom secret to add some variance into the
* mix, we don't need to (or want to) mix as often or as much as HighwayHash does.
*
* This isn't as tight as XXH3_accumulate, but still written in SIMD to avoid
* extraction.
*
* Both XXH3_64bits and XXH3_128bits use this subroutine.
*/
XXH_FORCE_INLINE XXH_TARGET_AVX512 void
XXH3_scrambleAcc_avx512(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 63) == 0);
XXH_STATIC_ASSERT(XXH_STRIPE_LEN == sizeof(__m512i));
{ __m512i* const xacc = (__m512i*) acc;
const __m512i prime32 = _mm512_set1_epi32((int)XXH_PRIME32_1);
/* xacc[0] ^= (xacc[0] >> 47) */
__m512i const acc_vec = *xacc;
__m512i const shifted = _mm512_srli_epi64 (acc_vec, 47);
__m512i const data_vec = _mm512_xor_si512 (acc_vec, shifted);
/* xacc[0] ^= secret; */
__m512i const key_vec = _mm512_loadu_si512 (secret);
__m512i const data_key = _mm512_xor_si512 (data_vec, key_vec);
/* xacc[0] *= XXH_PRIME32_1; */
__m512i const data_key_hi = _mm512_shuffle_epi32 (data_key, (_MM_PERM_ENUM)_MM_SHUFFLE(0, 3, 0, 1));
__m512i const prod_lo = _mm512_mul_epu32 (data_key, prime32);
__m512i const prod_hi = _mm512_mul_epu32 (data_key_hi, prime32);
*xacc = _mm512_add_epi64(prod_lo, _mm512_slli_epi64(prod_hi, 32));
}
}
XXH_FORCE_INLINE XXH_TARGET_AVX512 void
XXH3_initCustomSecret_avx512(void* XXH_RESTRICT customSecret, xxh_u64 seed64)
{
XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE & 63) == 0);
XXH_STATIC_ASSERT(XXH_SEC_ALIGN == 64);
XXH_ASSERT(((size_t)customSecret & 63) == 0);
(void)(&XXH_writeLE64);
{ int const nbRounds = XXH_SECRET_DEFAULT_SIZE / sizeof(__m512i);
__m512i const seed = _mm512_mask_set1_epi64(_mm512_set1_epi64((xxh_i64)seed64), 0xAA, (xxh_i64)(0U - seed64));
const __m512i* const src = (const __m512i*) ((const void*) XXH3_kSecret);
__m512i* const dest = ( __m512i*) customSecret;
int i;
XXH_ASSERT(((size_t)src & 63) == 0); /* control alignment */
XXH_ASSERT(((size_t)dest & 63) == 0);
for (i=0; i < nbRounds; ++i) {
/* GCC has a bug, _mm512_stream_load_si512 accepts 'void*', not 'void const*',
* this will warn "discards 'const' qualifier". */
union {
const __m512i* cp;
void* p;
} remote_const_void;
remote_const_void.cp = src + i;
dest[i] = _mm512_add_epi64(_mm512_stream_load_si512(remote_const_void.p), seed);
} }
}
#endif
#if (XXH_VECTOR == XXH_AVX2) \
|| (defined(XXH_DISPATCH_AVX2) && XXH_DISPATCH_AVX2 != 0)
#ifndef XXH_TARGET_AVX2
# define XXH_TARGET_AVX2 /* disable attribute target */
#endif
XXH_FORCE_INLINE XXH_TARGET_AVX2 void
XXH3_accumulate_512_avx2( void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 31) == 0);
{ __m256i* const xacc = (__m256i *) acc;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm256_loadu_si256 requires a const __m256i * pointer for some reason. */
const __m256i* const xinput = (const __m256i *) input;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm256_loadu_si256 requires a const __m256i * pointer for some reason. */
const __m256i* const xsecret = (const __m256i *) secret;
size_t i;
for (i=0; i < XXH_STRIPE_LEN/sizeof(__m256i); i++) {
/* data_vec = xinput[i]; */
__m256i const data_vec = _mm256_loadu_si256 (xinput+i);
/* key_vec = xsecret[i]; */
__m256i const key_vec = _mm256_loadu_si256 (xsecret+i);
/* data_key = data_vec ^ key_vec; */
__m256i const data_key = _mm256_xor_si256 (data_vec, key_vec);
/* data_key_lo = data_key >> 32; */
__m256i const data_key_lo = _mm256_shuffle_epi32 (data_key, _MM_SHUFFLE(0, 3, 0, 1));
/* product = (data_key & 0xffffffff) * (data_key_lo & 0xffffffff); */
__m256i const product = _mm256_mul_epu32 (data_key, data_key_lo);
/* xacc[i] += swap(data_vec); */
__m256i const data_swap = _mm256_shuffle_epi32(data_vec, _MM_SHUFFLE(1, 0, 3, 2));
__m256i const sum = _mm256_add_epi64(xacc[i], data_swap);
/* xacc[i] += product; */
xacc[i] = _mm256_add_epi64(product, sum);
} }
}
XXH_FORCE_INLINE XXH_TARGET_AVX2 void
XXH3_scrambleAcc_avx2(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 31) == 0);
{ __m256i* const xacc = (__m256i*) acc;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm256_loadu_si256 requires a const __m256i * pointer for some reason. */
const __m256i* const xsecret = (const __m256i *) secret;
const __m256i prime32 = _mm256_set1_epi32((int)XXH_PRIME32_1);
size_t i;
for (i=0; i < XXH_STRIPE_LEN/sizeof(__m256i); i++) {
/* xacc[i] ^= (xacc[i] >> 47) */
__m256i const acc_vec = xacc[i];
__m256i const shifted = _mm256_srli_epi64 (acc_vec, 47);
__m256i const data_vec = _mm256_xor_si256 (acc_vec, shifted);
/* xacc[i] ^= xsecret; */
__m256i const key_vec = _mm256_loadu_si256 (xsecret+i);
__m256i const data_key = _mm256_xor_si256 (data_vec, key_vec);
/* xacc[i] *= XXH_PRIME32_1; */
__m256i const data_key_hi = _mm256_shuffle_epi32 (data_key, _MM_SHUFFLE(0, 3, 0, 1));
__m256i const prod_lo = _mm256_mul_epu32 (data_key, prime32);
__m256i const prod_hi = _mm256_mul_epu32 (data_key_hi, prime32);
xacc[i] = _mm256_add_epi64(prod_lo, _mm256_slli_epi64(prod_hi, 32));
}
}
}
XXH_FORCE_INLINE XXH_TARGET_AVX2 void XXH3_initCustomSecret_avx2(void* XXH_RESTRICT customSecret, xxh_u64 seed64)
{
XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE & 31) == 0);
XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE / sizeof(__m256i)) == 6);
XXH_STATIC_ASSERT(XXH_SEC_ALIGN <= 64);
(void)(&XXH_writeLE64);
XXH_PREFETCH(customSecret);
{ __m256i const seed = _mm256_set_epi64x((xxh_i64)(0U - seed64), (xxh_i64)seed64, (xxh_i64)(0U - seed64), (xxh_i64)seed64);
const __m256i* const src = (const __m256i*) ((const void*) XXH3_kSecret);
__m256i* dest = ( __m256i*) customSecret;
# if defined(__GNUC__) || defined(__clang__)
/*
* On GCC & Clang, marking 'dest' as modified will cause the compiler:
* - do not extract the secret from sse registers in the internal loop
* - use less common registers, and avoid pushing these reg into stack
*/
XXH_COMPILER_GUARD(dest);
# endif
XXH_ASSERT(((size_t)src & 31) == 0); /* control alignment */
XXH_ASSERT(((size_t)dest & 31) == 0);
/* GCC -O2 need unroll loop manually */
dest[0] = _mm256_add_epi64(_mm256_stream_load_si256(src+0), seed);
dest[1] = _mm256_add_epi64(_mm256_stream_load_si256(src+1), seed);
dest[2] = _mm256_add_epi64(_mm256_stream_load_si256(src+2), seed);
dest[3] = _mm256_add_epi64(_mm256_stream_load_si256(src+3), seed);
dest[4] = _mm256_add_epi64(_mm256_stream_load_si256(src+4), seed);
dest[5] = _mm256_add_epi64(_mm256_stream_load_si256(src+5), seed);
}
}
#endif
/* x86dispatch always generates SSE2 */
#if (XXH_VECTOR == XXH_SSE2) || defined(XXH_X86DISPATCH)
#ifndef XXH_TARGET_SSE2
# define XXH_TARGET_SSE2 /* disable attribute target */
#endif
XXH_FORCE_INLINE XXH_TARGET_SSE2 void
XXH3_accumulate_512_sse2( void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
/* SSE2 is just a half-scale version of the AVX2 version. */
XXH_ASSERT((((size_t)acc) & 15) == 0);
{ __m128i* const xacc = (__m128i *) acc;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm_loadu_si128 requires a const __m128i * pointer for some reason. */
const __m128i* const xinput = (const __m128i *) input;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm_loadu_si128 requires a const __m128i * pointer for some reason. */
const __m128i* const xsecret = (const __m128i *) secret;
size_t i;
for (i=0; i < XXH_STRIPE_LEN/sizeof(__m128i); i++) {
/* data_vec = xinput[i]; */
__m128i const data_vec = _mm_loadu_si128 (xinput+i);
/* key_vec = xsecret[i]; */
__m128i const key_vec = _mm_loadu_si128 (xsecret+i);
/* data_key = data_vec ^ key_vec; */
__m128i const data_key = _mm_xor_si128 (data_vec, key_vec);
/* data_key_lo = data_key >> 32; */
__m128i const data_key_lo = _mm_shuffle_epi32 (data_key, _MM_SHUFFLE(0, 3, 0, 1));
/* product = (data_key & 0xffffffff) * (data_key_lo & 0xffffffff); */
__m128i const product = _mm_mul_epu32 (data_key, data_key_lo);
/* xacc[i] += swap(data_vec); */
__m128i const data_swap = _mm_shuffle_epi32(data_vec, _MM_SHUFFLE(1,0,3,2));
__m128i const sum = _mm_add_epi64(xacc[i], data_swap);
/* xacc[i] += product; */
xacc[i] = _mm_add_epi64(product, sum);
} }
}
XXH_FORCE_INLINE XXH_TARGET_SSE2 void
XXH3_scrambleAcc_sse2(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 15) == 0);
{ __m128i* const xacc = (__m128i*) acc;
/* Unaligned. This is mainly for pointer arithmetic, and because
* _mm_loadu_si128 requires a const __m128i * pointer for some reason. */
const __m128i* const xsecret = (const __m128i *) secret;
const __m128i prime32 = _mm_set1_epi32((int)XXH_PRIME32_1);
size_t i;
for (i=0; i < XXH_STRIPE_LEN/sizeof(__m128i); i++) {
/* xacc[i] ^= (xacc[i] >> 47) */
__m128i const acc_vec = xacc[i];
__m128i const shifted = _mm_srli_epi64 (acc_vec, 47);
__m128i const data_vec = _mm_xor_si128 (acc_vec, shifted);
/* xacc[i] ^= xsecret[i]; */
__m128i const key_vec = _mm_loadu_si128 (xsecret+i);
__m128i const data_key = _mm_xor_si128 (data_vec, key_vec);
/* xacc[i] *= XXH_PRIME32_1; */
__m128i const data_key_hi = _mm_shuffle_epi32 (data_key, _MM_SHUFFLE(0, 3, 0, 1));
__m128i const prod_lo = _mm_mul_epu32 (data_key, prime32);
__m128i const prod_hi = _mm_mul_epu32 (data_key_hi, prime32);
xacc[i] = _mm_add_epi64(prod_lo, _mm_slli_epi64(prod_hi, 32));
}
}
}
XXH_FORCE_INLINE XXH_TARGET_SSE2 void XXH3_initCustomSecret_sse2(void* XXH_RESTRICT customSecret, xxh_u64 seed64)
{
XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE & 15) == 0);
(void)(&XXH_writeLE64);
{ int const nbRounds = XXH_SECRET_DEFAULT_SIZE / sizeof(__m128i);
# if defined(_MSC_VER) && defined(_M_IX86) && _MSC_VER < 1900
/* MSVC 32bit mode does not support _mm_set_epi64x before 2015 */
XXH_ALIGN(16) const xxh_i64 seed64x2[2] = { (xxh_i64)seed64, (xxh_i64)(0U - seed64) };
__m128i const seed = _mm_load_si128((__m128i const*)seed64x2);
# else
__m128i const seed = _mm_set_epi64x((xxh_i64)(0U - seed64), (xxh_i64)seed64);
# endif
int i;
const void* const src16 = XXH3_kSecret;
__m128i* dst16 = (__m128i*) customSecret;
# if defined(__GNUC__) || defined(__clang__)
/*
* On GCC & Clang, marking 'dest' as modified will cause the compiler:
* - do not extract the secret from sse registers in the internal loop
* - use less common registers, and avoid pushing these reg into stack
*/
XXH_COMPILER_GUARD(dst16);
# endif
XXH_ASSERT(((size_t)src16 & 15) == 0); /* control alignment */
XXH_ASSERT(((size_t)dst16 & 15) == 0);
for (i=0; i < nbRounds; ++i) {
dst16[i] = _mm_add_epi64(_mm_load_si128((const __m128i *)src16+i), seed);
} }
}
#endif
#if (XXH_VECTOR == XXH_NEON)
/* forward declarations for the scalar routines */
XXH_FORCE_INLINE void
XXH3_scalarRound(void* XXH_RESTRICT acc, void const* XXH_RESTRICT input,
void const* XXH_RESTRICT secret, size_t lane);
XXH_FORCE_INLINE void
XXH3_scalarScrambleRound(void* XXH_RESTRICT acc,
void const* XXH_RESTRICT secret, size_t lane);
/*!
* @internal
* @brief The bulk processing loop for NEON.
*
* The NEON code path is actually partially scalar when running on AArch64. This
* is to optimize the pipelining and can have up to 15% speedup depending on the
* CPU, and it also mitigates some GCC codegen issues.
*
* @see XXH3_NEON_LANES for configuring this and details about this optimization.
*/
XXH_FORCE_INLINE void
XXH3_accumulate_512_neon( void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 15) == 0);
XXH_STATIC_ASSERT(XXH3_NEON_LANES > 0 && XXH3_NEON_LANES <= XXH_ACC_NB && XXH3_NEON_LANES % 2 == 0);
{
uint64x2_t* const xacc = (uint64x2_t *) acc;
/* We don't use a uint32x4_t pointer because it causes bus errors on ARMv7. */
uint8_t const* const xinput = (const uint8_t *) input;
uint8_t const* const xsecret = (const uint8_t *) secret;
size_t i;
/* NEON for the first few lanes (these loops are normally interleaved) */
for (i=0; i < XXH3_NEON_LANES / 2; i++) {
/* data_vec = xinput[i]; */
uint8x16_t data_vec = vld1q_u8(xinput + (i * 16));
/* key_vec = xsecret[i]; */
uint8x16_t key_vec = vld1q_u8(xsecret + (i * 16));
uint64x2_t data_key;
uint32x2_t data_key_lo, data_key_hi;
/* xacc[i] += swap(data_vec); */
uint64x2_t const data64 = vreinterpretq_u64_u8(data_vec);
uint64x2_t const swapped = vextq_u64(data64, data64, 1);
xacc[i] = vaddq_u64 (xacc[i], swapped);
/* data_key = data_vec ^ key_vec; */
data_key = vreinterpretq_u64_u8(veorq_u8(data_vec, key_vec));
/* data_key_lo = (uint32x2_t) (data_key & 0xFFFFFFFF);
* data_key_hi = (uint32x2_t) (data_key >> 32);
* data_key = UNDEFINED; */
XXH_SPLIT_IN_PLACE(data_key, data_key_lo, data_key_hi);
/* xacc[i] += (uint64x2_t) data_key_lo * (uint64x2_t) data_key_hi; */
xacc[i] = vmlal_u32 (xacc[i], data_key_lo, data_key_hi);
}
/* Scalar for the remainder. This may be a zero iteration loop. */
for (i = XXH3_NEON_LANES; i < XXH_ACC_NB; i++) {
XXH3_scalarRound(acc, input, secret, i);
}
}
}
XXH_FORCE_INLINE void
XXH3_scrambleAcc_neon(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 15) == 0);
{ uint64x2_t* xacc = (uint64x2_t*) acc;
uint8_t const* xsecret = (uint8_t const*) secret;
uint32x2_t prime = vdup_n_u32 (XXH_PRIME32_1);
size_t i;
/* NEON for the first few lanes (these loops are normally interleaved) */
for (i=0; i < XXH3_NEON_LANES / 2; i++) {
/* xacc[i] ^= (xacc[i] >> 47); */
uint64x2_t acc_vec = xacc[i];
uint64x2_t shifted = vshrq_n_u64 (acc_vec, 47);
uint64x2_t data_vec = veorq_u64 (acc_vec, shifted);
/* xacc[i] ^= xsecret[i]; */
uint8x16_t key_vec = vld1q_u8 (xsecret + (i * 16));
uint64x2_t data_key = veorq_u64 (data_vec, vreinterpretq_u64_u8(key_vec));
/* xacc[i] *= XXH_PRIME32_1 */
uint32x2_t data_key_lo, data_key_hi;
/* data_key_lo = (uint32x2_t) (xacc[i] & 0xFFFFFFFF);
* data_key_hi = (uint32x2_t) (xacc[i] >> 32);
* xacc[i] = UNDEFINED; */
XXH_SPLIT_IN_PLACE(data_key, data_key_lo, data_key_hi);
{ /*
* prod_hi = (data_key >> 32) * XXH_PRIME32_1;
*
* Avoid vmul_u32 + vshll_n_u32 since Clang 6 and 7 will
* incorrectly "optimize" this:
* tmp = vmul_u32(vmovn_u64(a), vmovn_u64(b));
* shifted = vshll_n_u32(tmp, 32);
* to this:
* tmp = "vmulq_u64"(a, b); // no such thing!
* shifted = vshlq_n_u64(tmp, 32);
*
* However, unlike SSE, Clang lacks a 64-bit multiply routine
* for NEON, and it scalarizes two 64-bit multiplies instead.
*
* vmull_u32 has the same timing as vmul_u32, and it avoids
* this bug completely.
* See https://bugs.llvm.org/show_bug.cgi?id=39967
*/
uint64x2_t prod_hi = vmull_u32 (data_key_hi, prime);
/* xacc[i] = prod_hi << 32; */
xacc[i] = vshlq_n_u64(prod_hi, 32);
/* xacc[i] += (prod_hi & 0xFFFFFFFF) * XXH_PRIME32_1; */
xacc[i] = vmlal_u32(xacc[i], data_key_lo, prime);
}
}
/* Scalar for the remainder. This may be a zero iteration loop. */
for (i = XXH3_NEON_LANES; i < XXH_ACC_NB; i++) {
XXH3_scalarScrambleRound(acc, secret, i);
}
}
}
#endif
#if (XXH_VECTOR == XXH_VSX)
XXH_FORCE_INLINE void
XXH3_accumulate_512_vsx( void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
/* presumed aligned */
unsigned int* const xacc = (unsigned int*) acc;
xxh_u64x2 const* const xinput = (xxh_u64x2 const*) input; /* no alignment restriction */
xxh_u64x2 const* const xsecret = (xxh_u64x2 const*) secret; /* no alignment restriction */
xxh_u64x2 const v32 = { 32, 32 };
size_t i;
for (i = 0; i < XXH_STRIPE_LEN / sizeof(xxh_u64x2); i++) {
/* data_vec = xinput[i]; */
xxh_u64x2 const data_vec = XXH_vec_loadu(xinput + i);
/* key_vec = xsecret[i]; */
xxh_u64x2 const key_vec = XXH_vec_loadu(xsecret + i);
xxh_u64x2 const data_key = data_vec ^ key_vec;
/* shuffled = (data_key << 32) | (data_key >> 32); */
xxh_u32x4 const shuffled = (xxh_u32x4)vec_rl(data_key, v32);
/* product = ((xxh_u64x2)data_key & 0xFFFFFFFF) * ((xxh_u64x2)shuffled & 0xFFFFFFFF); */
xxh_u64x2 const product = XXH_vec_mulo((xxh_u32x4)data_key, shuffled);
/* acc_vec = xacc[i]; */
xxh_u64x2 acc_vec = (xxh_u64x2)vec_xl(0, xacc + 4 * i);
acc_vec += product;
/* swap high and low halves */
#ifdef __s390x__
acc_vec += vec_permi(data_vec, data_vec, 2);
#else
acc_vec += vec_xxpermdi(data_vec, data_vec, 2);
#endif
/* xacc[i] = acc_vec; */
vec_xst((xxh_u32x4)acc_vec, 0, xacc + 4 * i);
}
}
XXH_FORCE_INLINE void
XXH3_scrambleAcc_vsx(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
XXH_ASSERT((((size_t)acc) & 15) == 0);
{ xxh_u64x2* const xacc = (xxh_u64x2*) acc;
const xxh_u64x2* const xsecret = (const xxh_u64x2*) secret;
/* constants */
xxh_u64x2 const v32 = { 32, 32 };
xxh_u64x2 const v47 = { 47, 47 };
xxh_u32x4 const prime = { XXH_PRIME32_1, XXH_PRIME32_1, XXH_PRIME32_1, XXH_PRIME32_1 };
size_t i;
for (i = 0; i < XXH_STRIPE_LEN / sizeof(xxh_u64x2); i++) {
/* xacc[i] ^= (xacc[i] >> 47); */
xxh_u64x2 const acc_vec = xacc[i];
xxh_u64x2 const data_vec = acc_vec ^ (acc_vec >> v47);
/* xacc[i] ^= xsecret[i]; */
xxh_u64x2 const key_vec = XXH_vec_loadu(xsecret + i);
xxh_u64x2 const data_key = data_vec ^ key_vec;
/* xacc[i] *= XXH_PRIME32_1 */
/* prod_lo = ((xxh_u64x2)data_key & 0xFFFFFFFF) * ((xxh_u64x2)prime & 0xFFFFFFFF); */
xxh_u64x2 const prod_even = XXH_vec_mule((xxh_u32x4)data_key, prime);
/* prod_hi = ((xxh_u64x2)data_key >> 32) * ((xxh_u64x2)prime >> 32); */
xxh_u64x2 const prod_odd = XXH_vec_mulo((xxh_u32x4)data_key, prime);
xacc[i] = prod_odd + (prod_even << v32);
} }
}
#endif
/* scalar variants - universal */
/*!
* @internal
* @brief Scalar round for @ref XXH3_accumulate_512_scalar().
*
* This is extracted to its own function because the NEON path uses a combination
* of NEON and scalar.
*/
XXH_FORCE_INLINE void
XXH3_scalarRound(void* XXH_RESTRICT acc,
void const* XXH_RESTRICT input,
void const* XXH_RESTRICT secret,
size_t lane)
{
xxh_u64* xacc = (xxh_u64*) acc;
xxh_u8 const* xinput = (xxh_u8 const*) input;
xxh_u8 const* xsecret = (xxh_u8 const*) secret;
XXH_ASSERT(lane < XXH_ACC_NB);
XXH_ASSERT(((size_t)acc & (XXH_ACC_ALIGN-1)) == 0);
{
xxh_u64 const data_val = XXH_readLE64(xinput + lane * 8);
xxh_u64 const data_key = data_val ^ XXH_readLE64(xsecret + lane * 8);
xacc[lane ^ 1] += data_val; /* swap adjacent lanes */
xacc[lane] += XXH_mult32to64(data_key & 0xFFFFFFFF, data_key >> 32);
}
}
/*!
* @internal
* @brief Processes a 64 byte block of data using the scalar path.
*/
XXH_FORCE_INLINE void
XXH3_accumulate_512_scalar(void* XXH_RESTRICT acc,
const void* XXH_RESTRICT input,
const void* XXH_RESTRICT secret)
{
size_t i;
for (i=0; i < XXH_ACC_NB; i++) {
XXH3_scalarRound(acc, input, secret, i);
}
}
/*!
* @internal
* @brief Scalar scramble step for @ref XXH3_scrambleAcc_scalar().
*
* This is extracted to its own function because the NEON path uses a combination
* of NEON and scalar.
*/
XXH_FORCE_INLINE void
XXH3_scalarScrambleRound(void* XXH_RESTRICT acc,
void const* XXH_RESTRICT secret,
size_t lane)
{
xxh_u64* const xacc = (xxh_u64*) acc; /* presumed aligned */
const xxh_u8* const xsecret = (const xxh_u8*) secret; /* no alignment restriction */
XXH_ASSERT((((size_t)acc) & (XXH_ACC_ALIGN-1)) == 0);
XXH_ASSERT(lane < XXH_ACC_NB);
{
xxh_u64 const key64 = XXH_readLE64(xsecret + lane * 8);
xxh_u64 acc64 = xacc[lane];
acc64 = XXH_xorshift64(acc64, 47);
acc64 ^= key64;
acc64 *= XXH_PRIME32_1;
xacc[lane] = acc64;
}
}
/*!
* @internal
* @brief Scrambles the accumulators after a large chunk has been read
*/
XXH_FORCE_INLINE void
XXH3_scrambleAcc_scalar(void* XXH_RESTRICT acc, const void* XXH_RESTRICT secret)
{
size_t i;
for (i=0; i < XXH_ACC_NB; i++) {
XXH3_scalarScrambleRound(acc, secret, i);
}
}
XXH_FORCE_INLINE void
XXH3_initCustomSecret_scalar(void* XXH_RESTRICT customSecret, xxh_u64 seed64)
{
/*
* We need a separate pointer for the hack below,
* which requires a non-const pointer.
* Any decent compiler will optimize this out otherwise.
*/
const xxh_u8* kSecretPtr = XXH3_kSecret;
XXH_STATIC_ASSERT((XXH_SECRET_DEFAULT_SIZE & 15) == 0);
#if defined(__clang__) && defined(__aarch64__)
/*
* UGLY HACK:
* Clang generates a bunch of MOV/MOVK pairs for aarch64, and they are
* placed sequentially, in order, at the top of the unrolled loop.
*
* While MOVK is great for generating constants (2 cycles for a 64-bit
* constant compared to 4 cycles for LDR), it fights for bandwidth with
* the arithmetic instructions.
*
* I L S
* MOVK
* MOVK
* MOVK
* MOVK
* ADD
* SUB STR
* STR
* By forcing loads from memory (as the asm line causes Clang to assume
* that XXH3_kSecretPtr has been changed), the pipelines are used more
* efficiently:
* I L S
* LDR
* ADD LDR
* SUB STR
* STR
*
* See XXH3_NEON_LANES for details on the pipsline.
*
* XXH3_64bits_withSeed, len == 256, Snapdragon 835
* without hack: 2654.4 MB/s
* with hack: 3202.9 MB/s
*/
XXH_COMPILER_GUARD(kSecretPtr);
#endif
/*
* Note: in debug mode, this overrides the asm optimization
* and Clang will emit MOVK chains again.
*/
XXH_ASSERT(kSecretPtr == XXH3_kSecret);
{ int const nbRounds = XXH_SECRET_DEFAULT_SIZE / 16;
int i;
for (i=0; i < nbRounds; i++) {
/*
* The asm hack causes Clang to assume that kSecretPtr aliases with
* customSecret, and on aarch64, this prevented LDP from merging two
* loads together for free. Putting the loads together before the stores
* properly generates LDP.
*/
xxh_u64 lo = XXH_readLE64(kSecretPtr + 16*i) + seed64;
xxh_u64 hi = XXH_readLE64(kSecretPtr + 16*i + 8) - seed64;
XXH_writeLE64((xxh_u8*)customSecret + 16*i, lo);
XXH_writeLE64((xxh_u8*)customSecret + 16*i + 8, hi);
} }
}
typedef void (*XXH3_f_accumulate_512)(void* XXH_RESTRICT, const void*, const void*);
typedef void (*XXH3_f_scrambleAcc)(void* XXH_RESTRICT, const void*);
typedef void (*XXH3_f_initCustomSecret)(void* XXH_RESTRICT, xxh_u64);
#if (XXH_VECTOR == XXH_AVX512)
#define XXH3_accumulate_512 XXH3_accumulate_512_avx512
#define XXH3_scrambleAcc XXH3_scrambleAcc_avx512
#define XXH3_initCustomSecret XXH3_initCustomSecret_avx512
#elif (XXH_VECTOR == XXH_AVX2)
#define XXH3_accumulate_512 XXH3_accumulate_512_avx2
#define XXH3_scrambleAcc XXH3_scrambleAcc_avx2
#define XXH3_initCustomSecret XXH3_initCustomSecret_avx2
#elif (XXH_VECTOR == XXH_SSE2)
#define XXH3_accumulate_512 XXH3_accumulate_512_sse2
#define XXH3_scrambleAcc XXH3_scrambleAcc_sse2
#define XXH3_initCustomSecret XXH3_initCustomSecret_sse2
#elif (XXH_VECTOR == XXH_NEON)
#define XXH3_accumulate_512 XXH3_accumulate_512_neon
#define XXH3_scrambleAcc XXH3_scrambleAcc_neon
#define XXH3_initCustomSecret XXH3_initCustomSecret_scalar
#elif (XXH_VECTOR == XXH_VSX)
#define XXH3_accumulate_512 XXH3_accumulate_512_vsx
#define XXH3_scrambleAcc XXH3_scrambleAcc_vsx
#define XXH3_initCustomSecret XXH3_initCustomSecret_scalar
#else /* scalar */
#define XXH3_accumulate_512 XXH3_accumulate_512_scalar
#define XXH3_scrambleAcc XXH3_scrambleAcc_scalar
#define XXH3_initCustomSecret XXH3_initCustomSecret_scalar
#endif
#ifndef XXH_PREFETCH_DIST
# ifdef __clang__
# define XXH_PREFETCH_DIST 320
# else
# if (XXH_VECTOR == XXH_AVX512)
# define XXH_PREFETCH_DIST 512
# else
# define XXH_PREFETCH_DIST 384
# endif
# endif /* __clang__ */
#endif /* XXH_PREFETCH_DIST */
/*
* XXH3_accumulate()
* Loops over XXH3_accumulate_512().
* Assumption: nbStripes will not overflow the secret size
*/
XXH_FORCE_INLINE void
XXH3_accumulate( xxh_u64* XXH_RESTRICT acc,
const xxh_u8* XXH_RESTRICT input,
const xxh_u8* XXH_RESTRICT secret,
size_t nbStripes,
XXH3_f_accumulate_512 f_acc512)
{
size_t n;
for (n = 0; n < nbStripes; n++ ) {
const xxh_u8* const in = input + n*XXH_STRIPE_LEN;
XXH_PREFETCH(in + XXH_PREFETCH_DIST);
f_acc512(acc,
in,
secret + n*XXH_SECRET_CONSUME_RATE);
}
}
XXH_FORCE_INLINE void
XXH3_hashLong_internal_loop(xxh_u64* XXH_RESTRICT acc,
const xxh_u8* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble)
{
size_t const nbStripesPerBlock = (secretSize - XXH_STRIPE_LEN) / XXH_SECRET_CONSUME_RATE;
size_t const block_len = XXH_STRIPE_LEN * nbStripesPerBlock;
size_t const nb_blocks = (len - 1) / block_len;
size_t n;
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN);
for (n = 0; n < nb_blocks; n++) {
XXH3_accumulate(acc, input + n*block_len, secret, nbStripesPerBlock, f_acc512);
f_scramble(acc, secret + secretSize - XXH_STRIPE_LEN);
}
/* last partial block */
XXH_ASSERT(len > XXH_STRIPE_LEN);
{ size_t const nbStripes = ((len - 1) - (block_len * nb_blocks)) / XXH_STRIPE_LEN;
XXH_ASSERT(nbStripes <= (secretSize / XXH_SECRET_CONSUME_RATE));
XXH3_accumulate(acc, input + nb_blocks*block_len, secret, nbStripes, f_acc512);
/* last stripe */
{ const xxh_u8* const p = input + len - XXH_STRIPE_LEN;
#define XXH_SECRET_LASTACC_START 7 /* not aligned on 8, last secret is different from acc & scrambler */
f_acc512(acc, p, secret + secretSize - XXH_STRIPE_LEN - XXH_SECRET_LASTACC_START);
} }
}
XXH_FORCE_INLINE xxh_u64
XXH3_mix2Accs(const xxh_u64* XXH_RESTRICT acc, const xxh_u8* XXH_RESTRICT secret)
{
return XXH3_mul128_fold64(
acc[0] ^ XXH_readLE64(secret),
acc[1] ^ XXH_readLE64(secret+8) );
}
static XXH64_hash_t
XXH3_mergeAccs(const xxh_u64* XXH_RESTRICT acc, const xxh_u8* XXH_RESTRICT secret, xxh_u64 start)
{
xxh_u64 result64 = start;
size_t i = 0;
for (i = 0; i < 4; i++) {
result64 += XXH3_mix2Accs(acc+2*i, secret + 16*i);
#if defined(__clang__) /* Clang */ \
&& (defined(__arm__) || defined(__thumb__)) /* ARMv7 */ \
&& (defined(__ARM_NEON) || defined(__ARM_NEON__)) /* NEON */ \
&& !defined(XXH_ENABLE_AUTOVECTORIZE) /* Define to disable */
/*
* UGLY HACK:
* Prevent autovectorization on Clang ARMv7-a. Exact same problem as
* the one in XXH3_len_129to240_64b. Speeds up shorter keys > 240b.
* XXH3_64bits, len == 256, Snapdragon 835:
* without hack: 2063.7 MB/s
* with hack: 2560.7 MB/s
*/
XXH_COMPILER_GUARD(result64);
#endif
}
return XXH3_avalanche(result64);
}
#define XXH3_INIT_ACC { XXH_PRIME32_3, XXH_PRIME64_1, XXH_PRIME64_2, XXH_PRIME64_3, \
XXH_PRIME64_4, XXH_PRIME32_2, XXH_PRIME64_5, XXH_PRIME32_1 }
XXH_FORCE_INLINE XXH64_hash_t
XXH3_hashLong_64b_internal(const void* XXH_RESTRICT input, size_t len,
const void* XXH_RESTRICT secret, size_t secretSize,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble)
{
XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64 acc[XXH_ACC_NB] = XXH3_INIT_ACC;
XXH3_hashLong_internal_loop(acc, (const xxh_u8*)input, len, (const xxh_u8*)secret, secretSize, f_acc512, f_scramble);
/* converge into final hash */
XXH_STATIC_ASSERT(sizeof(acc) == 64);
/* do not align on 8, so that the secret is different from the accumulator */
#define XXH_SECRET_MERGEACCS_START 11
XXH_ASSERT(secretSize >= sizeof(acc) + XXH_SECRET_MERGEACCS_START);
return XXH3_mergeAccs(acc, (const xxh_u8*)secret + XXH_SECRET_MERGEACCS_START, (xxh_u64)len * XXH_PRIME64_1);
}
/*
* It's important for performance to transmit secret's size (when it's static)
* so that the compiler can properly optimize the vectorized loop.
* This makes a big performance difference for "medium" keys (<1 KB) when using AVX instruction set.
*/
XXH_FORCE_INLINE XXH64_hash_t
XXH3_hashLong_64b_withSecret(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64, const xxh_u8* XXH_RESTRICT secret, size_t secretLen)
{
(void)seed64;
return XXH3_hashLong_64b_internal(input, len, secret, secretLen, XXH3_accumulate_512, XXH3_scrambleAcc);
}
/*
* It's preferable for performance that XXH3_hashLong is not inlined,
* as it results in a smaller function for small data, easier to the instruction cache.
* Note that inside this no_inline function, we do inline the internal loop,
* and provide a statically defined secret size to allow optimization of vector loop.
*/
XXH_NO_INLINE XXH64_hash_t
XXH3_hashLong_64b_default(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64, const xxh_u8* XXH_RESTRICT secret, size_t secretLen)
{
(void)seed64; (void)secret; (void)secretLen;
return XXH3_hashLong_64b_internal(input, len, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_accumulate_512, XXH3_scrambleAcc);
}
/*
* XXH3_hashLong_64b_withSeed():
* Generate a custom key based on alteration of default XXH3_kSecret with the seed,
* and then use this key for long mode hashing.
*
* This operation is decently fast but nonetheless costs a little bit of time.
* Try to avoid it whenever possible (typically when seed==0).
*
* It's important for performance that XXH3_hashLong is not inlined. Not sure
* why (uop cache maybe?), but the difference is large and easily measurable.
*/
XXH_FORCE_INLINE XXH64_hash_t
XXH3_hashLong_64b_withSeed_internal(const void* input, size_t len,
XXH64_hash_t seed,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble,
XXH3_f_initCustomSecret f_initSec)
{
if (seed == 0)
return XXH3_hashLong_64b_internal(input, len,
XXH3_kSecret, sizeof(XXH3_kSecret),
f_acc512, f_scramble);
{ XXH_ALIGN(XXH_SEC_ALIGN) xxh_u8 secret[XXH_SECRET_DEFAULT_SIZE];
f_initSec(secret, seed);
return XXH3_hashLong_64b_internal(input, len, secret, sizeof(secret),
f_acc512, f_scramble);
}
}
/*
* It's important for performance that XXH3_hashLong is not inlined.
*/
XXH_NO_INLINE XXH64_hash_t
XXH3_hashLong_64b_withSeed(const void* input, size_t len,
XXH64_hash_t seed, const xxh_u8* secret, size_t secretLen)
{
(void)secret; (void)secretLen;
return XXH3_hashLong_64b_withSeed_internal(input, len, seed,
XXH3_accumulate_512, XXH3_scrambleAcc, XXH3_initCustomSecret);
}
typedef XXH64_hash_t (*XXH3_hashLong64_f)(const void* XXH_RESTRICT, size_t,
XXH64_hash_t, const xxh_u8* XXH_RESTRICT, size_t);
XXH_FORCE_INLINE XXH64_hash_t
XXH3_64bits_internal(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64, const void* XXH_RESTRICT secret, size_t secretLen,
XXH3_hashLong64_f f_hashLong)
{
XXH_ASSERT(secretLen >= XXH3_SECRET_SIZE_MIN);
/*
* If an action is to be taken if `secretLen` condition is not respected,
* it should be done here.
* For now, it's a contract pre-condition.
* Adding a check and a branch here would cost performance at every hash.
* Also, note that function signature doesn't offer room to return an error.
*/
if (len <= 16)
return XXH3_len_0to16_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, seed64);
if (len <= 128)
return XXH3_len_17to128_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretLen, seed64);
if (len <= XXH3_MIDSIZE_MAX)
return XXH3_len_129to240_64b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretLen, seed64);
return f_hashLong(input, len, seed64, (const xxh_u8*)secret, secretLen);
}
/* === Public entry point === */
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits(const void* input, size_t len)
{
return XXH3_64bits_internal(input, len, 0, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_64b_default);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH64_hash_t
XXH3_64bits_withSecret(const void* input, size_t len, const void* secret, size_t secretSize)
{
return XXH3_64bits_internal(input, len, 0, secret, secretSize, XXH3_hashLong_64b_withSecret);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH64_hash_t
XXH3_64bits_withSeed(const void* input, size_t len, XXH64_hash_t seed)
{
return XXH3_64bits_internal(input, len, seed, XXH3_kSecret, sizeof(XXH3_kSecret), XXH3_hashLong_64b_withSeed);
}
XXH_PUBLIC_API XXH64_hash_t
XXH3_64bits_withSecretandSeed(const void* input, size_t len, const void* secret, size_t secretSize, XXH64_hash_t seed)
{
if (len <= XXH3_MIDSIZE_MAX)
return XXH3_64bits_internal(input, len, seed, XXH3_kSecret, sizeof(XXH3_kSecret), NULL);
return XXH3_hashLong_64b_withSecret(input, len, seed, (const xxh_u8*)secret, secretSize);
}
/* === XXH3 streaming === */
/*
* Malloc's a pointer that is always aligned to align.
*
* This must be freed with `XXH_alignedFree()`.
*
* malloc typically guarantees 16 byte alignment on 64-bit systems and 8 byte
* alignment on 32-bit. This isn't enough for the 32 byte aligned loads in AVX2
* or on 32-bit, the 16 byte aligned loads in SSE2 and NEON.
*
* This underalignment previously caused a rather obvious crash which went
* completely unnoticed due to XXH3_createState() not actually being tested.
* Credit to RedSpah for noticing this bug.
*
* The alignment is done manually: Functions like posix_memalign or _mm_malloc
* are avoided: To maintain portability, we would have to write a fallback
* like this anyways, and besides, testing for the existence of library
* functions without relying on external build tools is impossible.
*
* The method is simple: Overallocate, manually align, and store the offset
* to the original behind the returned pointer.
*
* Align must be a power of 2 and 8 <= align <= 128.
*/
static void* XXH_alignedMalloc(size_t s, size_t align)
{
XXH_ASSERT(align <= 128 && align >= 8); /* range check */
XXH_ASSERT((align & (align-1)) == 0); /* power of 2 */
XXH_ASSERT(s != 0 && s < (s + align)); /* empty/overflow */
{ /* Overallocate to make room for manual realignment and an offset byte */
xxh_u8* base = (xxh_u8*)XXH_malloc(s + align);
if (base != NULL) {
/*
* Get the offset needed to align this pointer.
*
* Even if the returned pointer is aligned, there will always be
* at least one byte to store the offset to the original pointer.
*/
size_t offset = align - ((size_t)base & (align - 1)); /* base % align */
/* Add the offset for the now-aligned pointer */
xxh_u8* ptr = base + offset;
XXH_ASSERT((size_t)ptr % align == 0);
/* Store the offset immediately before the returned pointer. */
ptr[-1] = (xxh_u8)offset;
return ptr;
}
return NULL;
}
}
/*
* Frees an aligned pointer allocated by XXH_alignedMalloc(). Don't pass
* normal malloc'd pointers, XXH_alignedMalloc has a specific data layout.
*/
static void XXH_alignedFree(void* p)
{
if (p != NULL) {
xxh_u8* ptr = (xxh_u8*)p;
/* Get the offset byte we added in XXH_malloc. */
xxh_u8 offset = ptr[-1];
/* Free the original malloc'd pointer */
xxh_u8* base = ptr - offset;
XXH_free(base);
}
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH3_state_t* XXH3_createState(void)
{
XXH3_state_t* const state = (XXH3_state_t*)XXH_alignedMalloc(sizeof(XXH3_state_t), 64);
if (state==NULL) return NULL;
XXH3_INITSTATE(state);
return state;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode XXH3_freeState(XXH3_state_t* statePtr)
{
XXH_alignedFree(statePtr);
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API void
XXH3_copyState(XXH3_state_t* dst_state, const XXH3_state_t* src_state)
{
XXH_memcpy(dst_state, src_state, sizeof(*dst_state));
}
static void
XXH3_reset_internal(XXH3_state_t* statePtr,
XXH64_hash_t seed,
const void* secret, size_t secretSize)
{
size_t const initStart = offsetof(XXH3_state_t, bufferedSize);
size_t const initLength = offsetof(XXH3_state_t, nbStripesPerBlock) - initStart;
XXH_ASSERT(offsetof(XXH3_state_t, nbStripesPerBlock) > initStart);
XXH_ASSERT(statePtr != NULL);
/* set members from bufferedSize to nbStripesPerBlock (excluded) to 0 */
memset((char*)statePtr + initStart, 0, initLength);
statePtr->acc[0] = XXH_PRIME32_3;
statePtr->acc[1] = XXH_PRIME64_1;
statePtr->acc[2] = XXH_PRIME64_2;
statePtr->acc[3] = XXH_PRIME64_3;
statePtr->acc[4] = XXH_PRIME64_4;
statePtr->acc[5] = XXH_PRIME32_2;
statePtr->acc[6] = XXH_PRIME64_5;
statePtr->acc[7] = XXH_PRIME32_1;
statePtr->seed = seed;
statePtr->useSeed = (seed != 0);
statePtr->extSecret = (const unsigned char*)secret;
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN);
statePtr->secretLimit = secretSize - XXH_STRIPE_LEN;
statePtr->nbStripesPerBlock = statePtr->secretLimit / XXH_SECRET_CONSUME_RATE;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_reset(XXH3_state_t* statePtr)
{
if (statePtr == NULL) return XXH_ERROR;
XXH3_reset_internal(statePtr, 0, XXH3_kSecret, XXH_SECRET_DEFAULT_SIZE);
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize)
{
if (statePtr == NULL) return XXH_ERROR;
XXH3_reset_internal(statePtr, 0, secret, secretSize);
if (secret == NULL) return XXH_ERROR;
if (secretSize < XXH3_SECRET_SIZE_MIN) return XXH_ERROR;
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed)
{
if (statePtr == NULL) return XXH_ERROR;
if (seed==0) return XXH3_64bits_reset(statePtr);
if ((seed != statePtr->seed) || (statePtr->extSecret != NULL))
XXH3_initCustomSecret(statePtr->customSecret, seed);
XXH3_reset_internal(statePtr, seed, NULL, XXH_SECRET_DEFAULT_SIZE);
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_reset_withSecretandSeed(XXH3_state_t* statePtr, const void* secret, size_t secretSize, XXH64_hash_t seed64)
{
if (statePtr == NULL) return XXH_ERROR;
if (secret == NULL) return XXH_ERROR;
if (secretSize < XXH3_SECRET_SIZE_MIN) return XXH_ERROR;
XXH3_reset_internal(statePtr, seed64, secret, secretSize);
statePtr->useSeed = 1; /* always, even if seed64==0 */
return XXH_OK;
}
/* Note : when XXH3_consumeStripes() is invoked,
* there must be a guarantee that at least one more byte must be consumed from input
* so that the function can blindly consume all stripes using the "normal" secret segment */
XXH_FORCE_INLINE void
XXH3_consumeStripes(xxh_u64* XXH_RESTRICT acc,
size_t* XXH_RESTRICT nbStripesSoFarPtr, size_t nbStripesPerBlock,
const xxh_u8* XXH_RESTRICT input, size_t nbStripes,
const xxh_u8* XXH_RESTRICT secret, size_t secretLimit,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble)
{
XXH_ASSERT(nbStripes <= nbStripesPerBlock); /* can handle max 1 scramble per invocation */
XXH_ASSERT(*nbStripesSoFarPtr < nbStripesPerBlock);
if (nbStripesPerBlock - *nbStripesSoFarPtr <= nbStripes) {
/* need a scrambling operation */
size_t const nbStripesToEndofBlock = nbStripesPerBlock - *nbStripesSoFarPtr;
size_t const nbStripesAfterBlock = nbStripes - nbStripesToEndofBlock;
XXH3_accumulate(acc, input, secret + nbStripesSoFarPtr[0] * XXH_SECRET_CONSUME_RATE, nbStripesToEndofBlock, f_acc512);
f_scramble(acc, secret + secretLimit);
XXH3_accumulate(acc, input + nbStripesToEndofBlock * XXH_STRIPE_LEN, secret, nbStripesAfterBlock, f_acc512);
*nbStripesSoFarPtr = nbStripesAfterBlock;
} else {
XXH3_accumulate(acc, input, secret + nbStripesSoFarPtr[0] * XXH_SECRET_CONSUME_RATE, nbStripes, f_acc512);
*nbStripesSoFarPtr += nbStripes;
}
}
#ifndef XXH3_STREAM_USE_STACK
# ifndef __clang__ /* clang doesn't need additional stack space */
# define XXH3_STREAM_USE_STACK 1
# endif
#endif
/*
* Both XXH3_64bits_update and XXH3_128bits_update use this routine.
*/
XXH_FORCE_INLINE XXH_errorcode
XXH3_update(XXH3_state_t* XXH_RESTRICT const state,
const xxh_u8* XXH_RESTRICT input, size_t len,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble)
{
if (input==NULL) {
XXH_ASSERT(len == 0);
return XXH_OK;
}
XXH_ASSERT(state != NULL);
{ const xxh_u8* const bEnd = input + len;
const unsigned char* const secret = (state->extSecret == NULL) ? state->customSecret : state->extSecret;
#if defined(XXH3_STREAM_USE_STACK) && XXH3_STREAM_USE_STACK >= 1
/* For some reason, gcc and MSVC seem to suffer greatly
* when operating accumulators directly into state.
* Operating into stack space seems to enable proper optimization.
* clang, on the other hand, doesn't seem to need this trick */
XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64 acc[8]; memcpy(acc, state->acc, sizeof(acc));
#else
xxh_u64* XXH_RESTRICT const acc = state->acc;
#endif
state->totalLen += len;
XXH_ASSERT(state->bufferedSize <= XXH3_INTERNALBUFFER_SIZE);
/* small input : just fill in tmp buffer */
if (state->bufferedSize + len <= XXH3_INTERNALBUFFER_SIZE) {
XXH_memcpy(state->buffer + state->bufferedSize, input, len);
state->bufferedSize += (XXH32_hash_t)len;
return XXH_OK;
}
/* total input is now > XXH3_INTERNALBUFFER_SIZE */
#define XXH3_INTERNALBUFFER_STRIPES (XXH3_INTERNALBUFFER_SIZE / XXH_STRIPE_LEN)
XXH_STATIC_ASSERT(XXH3_INTERNALBUFFER_SIZE % XXH_STRIPE_LEN == 0); /* clean multiple */
/*
* Internal buffer is partially filled (always, except at beginning)
* Complete it, then consume it.
*/
if (state->bufferedSize) {
size_t const loadSize = XXH3_INTERNALBUFFER_SIZE - state->bufferedSize;
XXH_memcpy(state->buffer + state->bufferedSize, input, loadSize);
input += loadSize;
XXH3_consumeStripes(acc,
&state->nbStripesSoFar, state->nbStripesPerBlock,
state->buffer, XXH3_INTERNALBUFFER_STRIPES,
secret, state->secretLimit,
f_acc512, f_scramble);
state->bufferedSize = 0;
}
XXH_ASSERT(input < bEnd);
/* large input to consume : ingest per full block */
if ((size_t)(bEnd - input) > state->nbStripesPerBlock * XXH_STRIPE_LEN) {
size_t nbStripes = (size_t)(bEnd - 1 - input) / XXH_STRIPE_LEN;
XXH_ASSERT(state->nbStripesPerBlock >= state->nbStripesSoFar);
/* join to current block's end */
{ size_t const nbStripesToEnd = state->nbStripesPerBlock - state->nbStripesSoFar;
XXH_ASSERT(nbStripesToEnd <= nbStripes);
XXH3_accumulate(acc, input, secret + state->nbStripesSoFar * XXH_SECRET_CONSUME_RATE, nbStripesToEnd, f_acc512);
f_scramble(acc, secret + state->secretLimit);
state->nbStripesSoFar = 0;
input += nbStripesToEnd * XXH_STRIPE_LEN;
nbStripes -= nbStripesToEnd;
}
/* consume per entire blocks */
while(nbStripes >= state->nbStripesPerBlock) {
XXH3_accumulate(acc, input, secret, state->nbStripesPerBlock, f_acc512);
f_scramble(acc, secret + state->secretLimit);
input += state->nbStripesPerBlock * XXH_STRIPE_LEN;
nbStripes -= state->nbStripesPerBlock;
}
/* consume last partial block */
XXH3_accumulate(acc, input, secret, nbStripes, f_acc512);
input += nbStripes * XXH_STRIPE_LEN;
XXH_ASSERT(input < bEnd); /* at least some bytes left */
state->nbStripesSoFar = nbStripes;
/* buffer predecessor of last partial stripe */
XXH_memcpy(state->buffer + sizeof(state->buffer) - XXH_STRIPE_LEN, input - XXH_STRIPE_LEN, XXH_STRIPE_LEN);
XXH_ASSERT(bEnd - input <= XXH_STRIPE_LEN);
} else {
/* content to consume <= block size */
/* Consume input by a multiple of internal buffer size */
if (bEnd - input > XXH3_INTERNALBUFFER_SIZE) {
const xxh_u8* const limit = bEnd - XXH3_INTERNALBUFFER_SIZE;
do {
XXH3_consumeStripes(acc,
&state->nbStripesSoFar, state->nbStripesPerBlock,
input, XXH3_INTERNALBUFFER_STRIPES,
secret, state->secretLimit,
f_acc512, f_scramble);
input += XXH3_INTERNALBUFFER_SIZE;
} while (input<limit);
/* buffer predecessor of last partial stripe */
XXH_memcpy(state->buffer + sizeof(state->buffer) - XXH_STRIPE_LEN, input - XXH_STRIPE_LEN, XXH_STRIPE_LEN);
}
}
/* Some remaining input (always) : buffer it */
XXH_ASSERT(input < bEnd);
XXH_ASSERT(bEnd - input <= XXH3_INTERNALBUFFER_SIZE);
XXH_ASSERT(state->bufferedSize == 0);
XXH_memcpy(state->buffer, input, (size_t)(bEnd-input));
state->bufferedSize = (XXH32_hash_t)(bEnd-input);
#if defined(XXH3_STREAM_USE_STACK) && XXH3_STREAM_USE_STACK >= 1
/* save stack accumulators into state */
memcpy(state->acc, acc, sizeof(acc));
#endif
}
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_64bits_update(XXH3_state_t* state, const void* input, size_t len)
{
return XXH3_update(state, (const xxh_u8*)input, len,
XXH3_accumulate_512, XXH3_scrambleAcc);
}
XXH_FORCE_INLINE void
XXH3_digest_long (XXH64_hash_t* acc,
const XXH3_state_t* state,
const unsigned char* secret)
{
/*
* Digest on a local copy. This way, the state remains unaltered, and it can
* continue ingesting more input afterwards.
*/
XXH_memcpy(acc, state->acc, sizeof(state->acc));
if (state->bufferedSize >= XXH_STRIPE_LEN) {
size_t const nbStripes = (state->bufferedSize - 1) / XXH_STRIPE_LEN;
size_t nbStripesSoFar = state->nbStripesSoFar;
XXH3_consumeStripes(acc,
&nbStripesSoFar, state->nbStripesPerBlock,
state->buffer, nbStripes,
secret, state->secretLimit,
XXH3_accumulate_512, XXH3_scrambleAcc);
/* last stripe */
XXH3_accumulate_512(acc,
state->buffer + state->bufferedSize - XXH_STRIPE_LEN,
secret + state->secretLimit - XXH_SECRET_LASTACC_START);
} else { /* bufferedSize < XXH_STRIPE_LEN */
xxh_u8 lastStripe[XXH_STRIPE_LEN];
size_t const catchupSize = XXH_STRIPE_LEN - state->bufferedSize;
XXH_ASSERT(state->bufferedSize > 0); /* there is always some input buffered */
XXH_memcpy(lastStripe, state->buffer + sizeof(state->buffer) - catchupSize, catchupSize);
XXH_memcpy(lastStripe + catchupSize, state->buffer, state->bufferedSize);
XXH3_accumulate_512(acc,
lastStripe,
secret + state->secretLimit - XXH_SECRET_LASTACC_START);
}
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH64_hash_t XXH3_64bits_digest (const XXH3_state_t* state)
{
const unsigned char* const secret = (state->extSecret == NULL) ? state->customSecret : state->extSecret;
if (state->totalLen > XXH3_MIDSIZE_MAX) {
XXH_ALIGN(XXH_ACC_ALIGN) XXH64_hash_t acc[XXH_ACC_NB];
XXH3_digest_long(acc, state, secret);
return XXH3_mergeAccs(acc,
secret + XXH_SECRET_MERGEACCS_START,
(xxh_u64)state->totalLen * XXH_PRIME64_1);
}
/* totalLen <= XXH3_MIDSIZE_MAX: digesting a short input */
if (state->useSeed)
return XXH3_64bits_withSeed(state->buffer, (size_t)state->totalLen, state->seed);
return XXH3_64bits_withSecret(state->buffer, (size_t)(state->totalLen),
secret, state->secretLimit + XXH_STRIPE_LEN);
}
/* ==========================================
* XXH3 128 bits (a.k.a XXH128)
* ==========================================
* XXH3's 128-bit variant has better mixing and strength than the 64-bit variant,
* even without counting the significantly larger output size.
*
* For example, extra steps are taken to avoid the seed-dependent collisions
* in 17-240 byte inputs (See XXH3_mix16B and XXH128_mix32B).
*
* This strength naturally comes at the cost of some speed, especially on short
* lengths. Note that longer hashes are about as fast as the 64-bit version
* due to it using only a slight modification of the 64-bit loop.
*
* XXH128 is also more oriented towards 64-bit machines. It is still extremely
* fast for a _128-bit_ hash on 32-bit (it usually clears XXH64).
*/
XXH_FORCE_INLINE XXH128_hash_t
XXH3_len_1to3_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
/* A doubled version of 1to3_64b with different constants. */
XXH_ASSERT(input != NULL);
XXH_ASSERT(1 <= len && len <= 3);
XXH_ASSERT(secret != NULL);
/*
* len = 1: combinedl = { input[0], 0x01, input[0], input[0] }
* len = 2: combinedl = { input[1], 0x02, input[0], input[1] }
* len = 3: combinedl = { input[2], 0x03, input[0], input[1] }
*/
{ xxh_u8 const c1 = input[0];
xxh_u8 const c2 = input[len >> 1];
xxh_u8 const c3 = input[len - 1];
xxh_u32 const combinedl = ((xxh_u32)c1 <<16) | ((xxh_u32)c2 << 24)
| ((xxh_u32)c3 << 0) | ((xxh_u32)len << 8);
xxh_u32 const combinedh = XXH_rotl32(XXH_swap32(combinedl), 13);
xxh_u64 const bitflipl = (XXH_readLE32(secret) ^ XXH_readLE32(secret+4)) + seed;
xxh_u64 const bitfliph = (XXH_readLE32(secret+8) ^ XXH_readLE32(secret+12)) - seed;
xxh_u64 const keyed_lo = (xxh_u64)combinedl ^ bitflipl;
xxh_u64 const keyed_hi = (xxh_u64)combinedh ^ bitfliph;
XXH128_hash_t h128;
h128.low64 = XXH64_avalanche(keyed_lo);
h128.high64 = XXH64_avalanche(keyed_hi);
return h128;
}
}
XXH_FORCE_INLINE XXH128_hash_t
XXH3_len_4to8_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(input != NULL);
XXH_ASSERT(secret != NULL);
XXH_ASSERT(4 <= len && len <= 8);
seed ^= (xxh_u64)XXH_swap32((xxh_u32)seed) << 32;
{ xxh_u32 const input_lo = XXH_readLE32(input);
xxh_u32 const input_hi = XXH_readLE32(input + len - 4);
xxh_u64 const input_64 = input_lo + ((xxh_u64)input_hi << 32);
xxh_u64 const bitflip = (XXH_readLE64(secret+16) ^ XXH_readLE64(secret+24)) + seed;
xxh_u64 const keyed = input_64 ^ bitflip;
/* Shift len to the left to ensure it is even, this avoids even multiplies. */
XXH128_hash_t m128 = XXH_mult64to128(keyed, XXH_PRIME64_1 + (len << 2));
m128.high64 += (m128.low64 << 1);
m128.low64 ^= (m128.high64 >> 3);
m128.low64 = XXH_xorshift64(m128.low64, 35);
m128.low64 *= 0x9FB21C651E98DF25ULL;
m128.low64 = XXH_xorshift64(m128.low64, 28);
m128.high64 = XXH3_avalanche(m128.high64);
return m128;
}
}
XXH_FORCE_INLINE XXH128_hash_t
XXH3_len_9to16_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(input != NULL);
XXH_ASSERT(secret != NULL);
XXH_ASSERT(9 <= len && len <= 16);
{ xxh_u64 const bitflipl = (XXH_readLE64(secret+32) ^ XXH_readLE64(secret+40)) - seed;
xxh_u64 const bitfliph = (XXH_readLE64(secret+48) ^ XXH_readLE64(secret+56)) + seed;
xxh_u64 const input_lo = XXH_readLE64(input);
xxh_u64 input_hi = XXH_readLE64(input + len - 8);
XXH128_hash_t m128 = XXH_mult64to128(input_lo ^ input_hi ^ bitflipl, XXH_PRIME64_1);
/*
* Put len in the middle of m128 to ensure that the length gets mixed to
* both the low and high bits in the 128x64 multiply below.
*/
m128.low64 += (xxh_u64)(len - 1) << 54;
input_hi ^= bitfliph;
/*
* Add the high 32 bits of input_hi to the high 32 bits of m128, then
* add the long product of the low 32 bits of input_hi and XXH_PRIME32_2 to
* the high 64 bits of m128.
*
* The best approach to this operation is different on 32-bit and 64-bit.
*/
if (sizeof(void *) < sizeof(xxh_u64)) { /* 32-bit */
/*
* 32-bit optimized version, which is more readable.
*
* On 32-bit, it removes an ADC and delays a dependency between the two
* halves of m128.high64, but it generates an extra mask on 64-bit.
*/
m128.high64 += (input_hi & 0xFFFFFFFF00000000ULL) + XXH_mult32to64((xxh_u32)input_hi, XXH_PRIME32_2);
} else {
/*
* 64-bit optimized (albeit more confusing) version.
*
* Uses some properties of addition and multiplication to remove the mask:
*
* Let:
* a = input_hi.lo = (input_hi & 0x00000000FFFFFFFF)
* b = input_hi.hi = (input_hi & 0xFFFFFFFF00000000)
* c = XXH_PRIME32_2
*
* a + (b * c)
* Inverse Property: x + y - x == y
* a + (b * (1 + c - 1))
* Distributive Property: x * (y + z) == (x * y) + (x * z)
* a + (b * 1) + (b * (c - 1))
* Identity Property: x * 1 == x
* a + b + (b * (c - 1))
*
* Substitute a, b, and c:
* input_hi.hi + input_hi.lo + ((xxh_u64)input_hi.lo * (XXH_PRIME32_2 - 1))
*
* Since input_hi.hi + input_hi.lo == input_hi, we get this:
* input_hi + ((xxh_u64)input_hi.lo * (XXH_PRIME32_2 - 1))
*/
m128.high64 += input_hi + XXH_mult32to64((xxh_u32)input_hi, XXH_PRIME32_2 - 1);
}
/* m128 ^= XXH_swap64(m128 >> 64); */
m128.low64 ^= XXH_swap64(m128.high64);
{ /* 128x64 multiply: h128 = m128 * XXH_PRIME64_2; */
XXH128_hash_t h128 = XXH_mult64to128(m128.low64, XXH_PRIME64_2);
h128.high64 += m128.high64 * XXH_PRIME64_2;
h128.low64 = XXH3_avalanche(h128.low64);
h128.high64 = XXH3_avalanche(h128.high64);
return h128;
} }
}
/*
* Assumption: `secret` size is >= XXH3_SECRET_SIZE_MIN
*/
XXH_FORCE_INLINE XXH128_hash_t
XXH3_len_0to16_128b(const xxh_u8* input, size_t len, const xxh_u8* secret, XXH64_hash_t seed)
{
XXH_ASSERT(len <= 16);
{ if (len > 8) return XXH3_len_9to16_128b(input, len, secret, seed);
if (len >= 4) return XXH3_len_4to8_128b(input, len, secret, seed);
if (len) return XXH3_len_1to3_128b(input, len, secret, seed);
{ XXH128_hash_t h128;
xxh_u64 const bitflipl = XXH_readLE64(secret+64) ^ XXH_readLE64(secret+72);
xxh_u64 const bitfliph = XXH_readLE64(secret+80) ^ XXH_readLE64(secret+88);
h128.low64 = XXH64_avalanche(seed ^ bitflipl);
h128.high64 = XXH64_avalanche( seed ^ bitfliph);
return h128;
} }
}
/*
* A bit slower than XXH3_mix16B, but handles multiply by zero better.
*/
XXH_FORCE_INLINE XXH128_hash_t
XXH128_mix32B(XXH128_hash_t acc, const xxh_u8* input_1, const xxh_u8* input_2,
const xxh_u8* secret, XXH64_hash_t seed)
{
acc.low64 += XXH3_mix16B (input_1, secret+0, seed);
acc.low64 ^= XXH_readLE64(input_2) + XXH_readLE64(input_2 + 8);
acc.high64 += XXH3_mix16B (input_2, secret+16, seed);
acc.high64 ^= XXH_readLE64(input_1) + XXH_readLE64(input_1 + 8);
return acc;
}
XXH_FORCE_INLINE XXH128_hash_t
XXH3_len_17to128_128b(const xxh_u8* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH64_hash_t seed)
{
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize;
XXH_ASSERT(16 < len && len <= 128);
{ XXH128_hash_t acc;
acc.low64 = len * XXH_PRIME64_1;
acc.high64 = 0;
if (len > 32) {
if (len > 64) {
if (len > 96) {
acc = XXH128_mix32B(acc, input+48, input+len-64, secret+96, seed);
}
acc = XXH128_mix32B(acc, input+32, input+len-48, secret+64, seed);
}
acc = XXH128_mix32B(acc, input+16, input+len-32, secret+32, seed);
}
acc = XXH128_mix32B(acc, input, input+len-16, secret, seed);
{ XXH128_hash_t h128;
h128.low64 = acc.low64 + acc.high64;
h128.high64 = (acc.low64 * XXH_PRIME64_1)
+ (acc.high64 * XXH_PRIME64_4)
+ ((len - seed) * XXH_PRIME64_2);
h128.low64 = XXH3_avalanche(h128.low64);
h128.high64 = (XXH64_hash_t)0 - XXH3_avalanche(h128.high64);
return h128;
}
}
}
XXH_NO_INLINE XXH128_hash_t
XXH3_len_129to240_128b(const xxh_u8* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH64_hash_t seed)
{
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN); (void)secretSize;
XXH_ASSERT(128 < len && len <= XXH3_MIDSIZE_MAX);
{ XXH128_hash_t acc;
int const nbRounds = (int)len / 32;
int i;
acc.low64 = len * XXH_PRIME64_1;
acc.high64 = 0;
for (i=0; i<4; i++) {
acc = XXH128_mix32B(acc,
input + (32 * i),
input + (32 * i) + 16,
secret + (32 * i),
seed);
}
acc.low64 = XXH3_avalanche(acc.low64);
acc.high64 = XXH3_avalanche(acc.high64);
XXH_ASSERT(nbRounds >= 4);
for (i=4 ; i < nbRounds; i++) {
acc = XXH128_mix32B(acc,
input + (32 * i),
input + (32 * i) + 16,
secret + XXH3_MIDSIZE_STARTOFFSET + (32 * (i - 4)),
seed);
}
/* last bytes */
acc = XXH128_mix32B(acc,
input + len - 16,
input + len - 32,
secret + XXH3_SECRET_SIZE_MIN - XXH3_MIDSIZE_LASTOFFSET - 16,
0ULL - seed);
{ XXH128_hash_t h128;
h128.low64 = acc.low64 + acc.high64;
h128.high64 = (acc.low64 * XXH_PRIME64_1)
+ (acc.high64 * XXH_PRIME64_4)
+ ((len - seed) * XXH_PRIME64_2);
h128.low64 = XXH3_avalanche(h128.low64);
h128.high64 = (XXH64_hash_t)0 - XXH3_avalanche(h128.high64);
return h128;
}
}
}
XXH_FORCE_INLINE XXH128_hash_t
XXH3_hashLong_128b_internal(const void* XXH_RESTRICT input, size_t len,
const xxh_u8* XXH_RESTRICT secret, size_t secretSize,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble)
{
XXH_ALIGN(XXH_ACC_ALIGN) xxh_u64 acc[XXH_ACC_NB] = XXH3_INIT_ACC;
XXH3_hashLong_internal_loop(acc, (const xxh_u8*)input, len, secret, secretSize, f_acc512, f_scramble);
/* converge into final hash */
XXH_STATIC_ASSERT(sizeof(acc) == 64);
XXH_ASSERT(secretSize >= sizeof(acc) + XXH_SECRET_MERGEACCS_START);
{ XXH128_hash_t h128;
h128.low64 = XXH3_mergeAccs(acc,
secret + XXH_SECRET_MERGEACCS_START,
(xxh_u64)len * XXH_PRIME64_1);
h128.high64 = XXH3_mergeAccs(acc,
secret + secretSize
- sizeof(acc) - XXH_SECRET_MERGEACCS_START,
~((xxh_u64)len * XXH_PRIME64_2));
return h128;
}
}
/*
* It's important for performance that XXH3_hashLong is not inlined.
*/
XXH_NO_INLINE XXH128_hash_t
XXH3_hashLong_128b_default(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64,
const void* XXH_RESTRICT secret, size_t secretLen)
{
(void)seed64; (void)secret; (void)secretLen;
return XXH3_hashLong_128b_internal(input, len, XXH3_kSecret, sizeof(XXH3_kSecret),
XXH3_accumulate_512, XXH3_scrambleAcc);
}
/*
* It's important for performance to pass @secretLen (when it's static)
* to the compiler, so that it can properly optimize the vectorized loop.
*/
XXH_FORCE_INLINE XXH128_hash_t
XXH3_hashLong_128b_withSecret(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64,
const void* XXH_RESTRICT secret, size_t secretLen)
{
(void)seed64;
return XXH3_hashLong_128b_internal(input, len, (const xxh_u8*)secret, secretLen,
XXH3_accumulate_512, XXH3_scrambleAcc);
}
XXH_FORCE_INLINE XXH128_hash_t
XXH3_hashLong_128b_withSeed_internal(const void* XXH_RESTRICT input, size_t len,
XXH64_hash_t seed64,
XXH3_f_accumulate_512 f_acc512,
XXH3_f_scrambleAcc f_scramble,
XXH3_f_initCustomSecret f_initSec)
{
if (seed64 == 0)
return XXH3_hashLong_128b_internal(input, len,
XXH3_kSecret, sizeof(XXH3_kSecret),
f_acc512, f_scramble);
{ XXH_ALIGN(XXH_SEC_ALIGN) xxh_u8 secret[XXH_SECRET_DEFAULT_SIZE];
f_initSec(secret, seed64);
return XXH3_hashLong_128b_internal(input, len, (const xxh_u8*)secret, sizeof(secret),
f_acc512, f_scramble);
}
}
/*
* It's important for performance that XXH3_hashLong is not inlined.
*/
XXH_NO_INLINE XXH128_hash_t
XXH3_hashLong_128b_withSeed(const void* input, size_t len,
XXH64_hash_t seed64, const void* XXH_RESTRICT secret, size_t secretLen)
{
(void)secret; (void)secretLen;
return XXH3_hashLong_128b_withSeed_internal(input, len, seed64,
XXH3_accumulate_512, XXH3_scrambleAcc, XXH3_initCustomSecret);
}
typedef XXH128_hash_t (*XXH3_hashLong128_f)(const void* XXH_RESTRICT, size_t,
XXH64_hash_t, const void* XXH_RESTRICT, size_t);
XXH_FORCE_INLINE XXH128_hash_t
XXH3_128bits_internal(const void* input, size_t len,
XXH64_hash_t seed64, const void* XXH_RESTRICT secret, size_t secretLen,
XXH3_hashLong128_f f_hl128)
{
XXH_ASSERT(secretLen >= XXH3_SECRET_SIZE_MIN);
/*
* If an action is to be taken if `secret` conditions are not respected,
* it should be done here.
* For now, it's a contract pre-condition.
* Adding a check and a branch here would cost performance at every hash.
*/
if (len <= 16)
return XXH3_len_0to16_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, seed64);
if (len <= 128)
return XXH3_len_17to128_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretLen, seed64);
if (len <= XXH3_MIDSIZE_MAX)
return XXH3_len_129to240_128b((const xxh_u8*)input, len, (const xxh_u8*)secret, secretLen, seed64);
return f_hl128(input, len, seed64, secret, secretLen);
}
/* === Public XXH128 API === */
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits(const void* input, size_t len)
{
return XXH3_128bits_internal(input, len, 0,
XXH3_kSecret, sizeof(XXH3_kSecret),
XXH3_hashLong_128b_default);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t
XXH3_128bits_withSecret(const void* input, size_t len, const void* secret, size_t secretSize)
{
return XXH3_128bits_internal(input, len, 0,
(const xxh_u8*)secret, secretSize,
XXH3_hashLong_128b_withSecret);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t
XXH3_128bits_withSeed(const void* input, size_t len, XXH64_hash_t seed)
{
return XXH3_128bits_internal(input, len, seed,
XXH3_kSecret, sizeof(XXH3_kSecret),
XXH3_hashLong_128b_withSeed);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t
XXH3_128bits_withSecretandSeed(const void* input, size_t len, const void* secret, size_t secretSize, XXH64_hash_t seed)
{
if (len <= XXH3_MIDSIZE_MAX)
return XXH3_128bits_internal(input, len, seed, XXH3_kSecret, sizeof(XXH3_kSecret), NULL);
return XXH3_hashLong_128b_withSecret(input, len, seed, secret, secretSize);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t
XXH128(const void* input, size_t len, XXH64_hash_t seed)
{
return XXH3_128bits_withSeed(input, len, seed);
}
/* === XXH3 128-bit streaming === */
/*
* All initialization and update functions are identical to 64-bit streaming variant.
* The only difference is the finalization routine.
*/
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_reset(XXH3_state_t* statePtr)
{
return XXH3_64bits_reset(statePtr);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_reset_withSecret(XXH3_state_t* statePtr, const void* secret, size_t secretSize)
{
return XXH3_64bits_reset_withSecret(statePtr, secret, secretSize);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_reset_withSeed(XXH3_state_t* statePtr, XXH64_hash_t seed)
{
return XXH3_64bits_reset_withSeed(statePtr, seed);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_reset_withSecretandSeed(XXH3_state_t* statePtr, const void* secret, size_t secretSize, XXH64_hash_t seed)
{
return XXH3_64bits_reset_withSecretandSeed(statePtr, secret, secretSize, seed);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_128bits_update(XXH3_state_t* state, const void* input, size_t len)
{
return XXH3_update(state, (const xxh_u8*)input, len,
XXH3_accumulate_512, XXH3_scrambleAcc);
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t XXH3_128bits_digest (const XXH3_state_t* state)
{
const unsigned char* const secret = (state->extSecret == NULL) ? state->customSecret : state->extSecret;
if (state->totalLen > XXH3_MIDSIZE_MAX) {
XXH_ALIGN(XXH_ACC_ALIGN) XXH64_hash_t acc[XXH_ACC_NB];
XXH3_digest_long(acc, state, secret);
XXH_ASSERT(state->secretLimit + XXH_STRIPE_LEN >= sizeof(acc) + XXH_SECRET_MERGEACCS_START);
{ XXH128_hash_t h128;
h128.low64 = XXH3_mergeAccs(acc,
secret + XXH_SECRET_MERGEACCS_START,
(xxh_u64)state->totalLen * XXH_PRIME64_1);
h128.high64 = XXH3_mergeAccs(acc,
secret + state->secretLimit + XXH_STRIPE_LEN
- sizeof(acc) - XXH_SECRET_MERGEACCS_START,
~((xxh_u64)state->totalLen * XXH_PRIME64_2));
return h128;
}
}
/* len <= XXH3_MIDSIZE_MAX : short code */
if (state->seed)
return XXH3_128bits_withSeed(state->buffer, (size_t)state->totalLen, state->seed);
return XXH3_128bits_withSecret(state->buffer, (size_t)(state->totalLen),
secret, state->secretLimit + XXH_STRIPE_LEN);
}
/* 128-bit utility functions */
#include <string.h> /* memcmp, memcpy */
/* return : 1 is equal, 0 if different */
/*! @ingroup xxh3_family */
XXH_PUBLIC_API int XXH128_isEqual(XXH128_hash_t h1, XXH128_hash_t h2)
{
/* note : XXH128_hash_t is compact, it has no padding byte */
return !(memcmp(&h1, &h2, sizeof(h1)));
}
/* This prototype is compatible with stdlib's qsort().
* return : >0 if *h128_1 > *h128_2
* <0 if *h128_1 < *h128_2
* =0 if *h128_1 == *h128_2 */
/*! @ingroup xxh3_family */
XXH_PUBLIC_API int XXH128_cmp(const void* h128_1, const void* h128_2)
{
XXH128_hash_t const h1 = *(const XXH128_hash_t*)h128_1;
XXH128_hash_t const h2 = *(const XXH128_hash_t*)h128_2;
int const hcmp = (h1.high64 > h2.high64) - (h2.high64 > h1.high64);
/* note : bets that, in most cases, hash values are different */
if (hcmp) return hcmp;
return (h1.low64 > h2.low64) - (h2.low64 > h1.low64);
}
/*====== Canonical representation ======*/
/*! @ingroup xxh3_family */
XXH_PUBLIC_API void
XXH128_canonicalFromHash(XXH128_canonical_t* dst, XXH128_hash_t hash)
{
XXH_STATIC_ASSERT(sizeof(XXH128_canonical_t) == sizeof(XXH128_hash_t));
if (XXH_CPU_LITTLE_ENDIAN) {
hash.high64 = XXH_swap64(hash.high64);
hash.low64 = XXH_swap64(hash.low64);
}
XXH_memcpy(dst, &hash.high64, sizeof(hash.high64));
XXH_memcpy((char*)dst + sizeof(hash.high64), &hash.low64, sizeof(hash.low64));
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH128_hash_t
XXH128_hashFromCanonical(const XXH128_canonical_t* src)
{
XXH128_hash_t h;
h.high64 = XXH_readBE64(src);
h.low64 = XXH_readBE64(src->digest + 8);
return h;
}
/* ==========================================
* Secret generators
* ==========================================
*/
#define XXH_MIN(x, y) (((x) > (y)) ? (y) : (x))
XXH_FORCE_INLINE void XXH3_combine16(void* dst, XXH128_hash_t h128)
{
XXH_writeLE64( dst, XXH_readLE64(dst) ^ h128.low64 );
XXH_writeLE64( (char*)dst+8, XXH_readLE64((char*)dst+8) ^ h128.high64 );
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API XXH_errorcode
XXH3_generateSecret(void* secretBuffer, size_t secretSize, const void* customSeed, size_t customSeedSize)
{
#if (XXH_DEBUGLEVEL >= 1)
XXH_ASSERT(secretBuffer != NULL);
XXH_ASSERT(secretSize >= XXH3_SECRET_SIZE_MIN);
#else
/* production mode, assert() are disabled */
if (secretBuffer == NULL) return XXH_ERROR;
if (secretSize < XXH3_SECRET_SIZE_MIN) return XXH_ERROR;
#endif
if (customSeedSize == 0) {
customSeed = XXH3_kSecret;
customSeedSize = XXH_SECRET_DEFAULT_SIZE;
}
#if (XXH_DEBUGLEVEL >= 1)
XXH_ASSERT(customSeed != NULL);
#else
if (customSeed == NULL) return XXH_ERROR;
#endif
/* Fill secretBuffer with a copy of customSeed - repeat as needed */
{ size_t pos = 0;
while (pos < secretSize) {
size_t const toCopy = XXH_MIN((secretSize - pos), customSeedSize);
memcpy((char*)secretBuffer + pos, customSeed, toCopy);
pos += toCopy;
} }
{ size_t const nbSeg16 = secretSize / 16;
size_t n;
XXH128_canonical_t scrambler;
XXH128_canonicalFromHash(&scrambler, XXH128(customSeed, customSeedSize, 0));
for (n=0; n<nbSeg16; n++) {
XXH128_hash_t const h128 = XXH128(&scrambler, sizeof(scrambler), n);
XXH3_combine16((char*)secretBuffer + n*16, h128);
}
/* last segment */
XXH3_combine16((char*)secretBuffer + secretSize - 16, XXH128_hashFromCanonical(&scrambler));
}
return XXH_OK;
}
/*! @ingroup xxh3_family */
XXH_PUBLIC_API void
XXH3_generateSecret_fromSeed(void* secretBuffer, XXH64_hash_t seed)
{
XXH_ALIGN(XXH_SEC_ALIGN) xxh_u8 secret[XXH_SECRET_DEFAULT_SIZE];
XXH3_initCustomSecret(secret, seed);
XXH_ASSERT(secretBuffer != NULL);
memcpy(secretBuffer, secret, XXH_SECRET_DEFAULT_SIZE);
}
/* Pop our optimization override from above */
#if XXH_VECTOR == XXH_AVX2 /* AVX2 */ \
&& defined(__GNUC__) && !defined(__clang__) /* GCC, not Clang */ \
&& defined(__OPTIMIZE__) && !defined(__OPTIMIZE_SIZE__) /* respect -O0 and -Os */
# pragma GCC pop_options
#endif
#endif /* XXH_NO_LONG_LONG */
#endif /* XXH_NO_XXH3 */
/*!
* @}
*/
#endif /* XXH_IMPLEMENTATION */
#if defined (__cplusplus)
lib/common/zstd_internal.h
+92 -88
View File
@@ -19,10 +19,8 @@
/*-*************************************
* Dependencies
***************************************/
#if !defined(ZSTD_NO_INTRINSICS) && defined(__ARM_NEON)
#include <arm_neon.h>
#endif
#include "compiler.h"
#include "cpu.h"
#include "mem.h"
#include "debug.h" /* assert, DEBUGLOG, RAWLOG, g_debuglevel */
#include "error_private.h"
@@ -60,81 +58,7 @@ extern "C" {
#undef MAX
#define MIN(a,b) ((a)<(b) ? (a) : (b))
#define MAX(a,b) ((a)>(b) ? (a) : (b))
/**
* Ignore: this is an internal helper.
*
* This is a helper function to help force C99-correctness during compilation.
* Under strict compilation modes, variadic macro arguments can't be empty.
* However, variadic function arguments can be. Using a function therefore lets
* us statically check that at least one (string) argument was passed,
* independent of the compilation flags.
*/
static INLINE_KEYWORD UNUSED_ATTR
void _force_has_format_string(const char *format, ...) {
(void)format;
}
/**
* Ignore: this is an internal helper.
*
* We want to force this function invocation to be syntactically correct, but
* we don't want to force runtime evaluation of its arguments.
*/
#define _FORCE_HAS_FORMAT_STRING(...) \
if (0) { \
_force_has_format_string(__VA_ARGS__); \
}
/**
* Return the specified error if the condition evaluates to true.
*
* In debug modes, prints additional information.
* In order to do that (particularly, printing the conditional that failed),
* this can't just wrap RETURN_ERROR().
*/
#define RETURN_ERROR_IF(cond, err, ...) \
if (cond) { \
RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \
__FILE__, __LINE__, ZSTD_QUOTE(cond), ZSTD_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
}
/**
* Unconditionally return the specified error.
*
* In debug modes, prints additional information.
*/
#define RETURN_ERROR(err, ...) \
do { \
RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \
__FILE__, __LINE__, ZSTD_QUOTE(ERROR(err))); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return ERROR(err); \
} while(0);
/**
* If the provided expression evaluates to an error code, returns that error code.
*
* In debug modes, prints additional information.
*/
#define FORWARD_IF_ERROR(err, ...) \
do { \
size_t const err_code = (err); \
if (ERR_isError(err_code)) { \
RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \
__FILE__, __LINE__, ZSTD_QUOTE(err), ERR_getErrorName(err_code)); \
_FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \
RAWLOG(3, ": " __VA_ARGS__); \
RAWLOG(3, "\n"); \
return err_code; \
} \
} while(0);
#define BOUNDED(min,val,max) (MAX(min,MIN(val,max)))
/*-*************************************
@@ -195,7 +119,7 @@ typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingTy
/* Each table cannot take more than #symbols * FSELog bits */
#define ZSTD_MAX_FSE_HEADERS_SIZE (((MaxML + 1) * MLFSELog + (MaxLL + 1) * LLFSELog + (MaxOff + 1) * OffFSELog + 7) / 8)
static UNUSED_ATTR const U32 LL_bits[MaxLL+1] = {
static UNUSED_ATTR const U8 LL_bits[MaxLL+1] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 2, 2, 3, 3,
@@ -212,7 +136,7 @@ static UNUSED_ATTR const S16 LL_defaultNorm[MaxLL+1] = {
#define LL_DEFAULTNORMLOG 6 /* for static allocation */
static UNUSED_ATTR const U32 LL_defaultNormLog = LL_DEFAULTNORMLOG;
static UNUSED_ATTR const U32 ML_bits[MaxML+1] = {
static UNUSED_ATTR const U8 ML_bits[MaxML+1] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
@@ -247,19 +171,30 @@ static UNUSED_ATTR const U32 OF_defaultNormLog = OF_DEFAULTNORMLOG;
* Shared functions to include for inlining
*********************************************/
static void ZSTD_copy8(void* dst, const void* src) {
#if !defined(ZSTD_NO_INTRINSICS) && defined(__ARM_NEON)
#if defined(ZSTD_ARCH_ARM_NEON)
vst1_u8((uint8_t*)dst, vld1_u8((const uint8_t*)src));
#else
ZSTD_memcpy(dst, src, 8);
#endif
}
#define COPY8(d,s) { ZSTD_copy8(d,s); d+=8; s+=8; }
/* Need to use memmove here since the literal buffer can now be located within
the dst buffer. In circumstances where the op "catches up" to where the
literal buffer is, there can be partial overlaps in this call on the final
copy if the literal is being shifted by less than 16 bytes. */
static void ZSTD_copy16(void* dst, const void* src) {
#if !defined(ZSTD_NO_INTRINSICS) && defined(__ARM_NEON)
#if defined(ZSTD_ARCH_ARM_NEON)
vst1q_u8((uint8_t*)dst, vld1q_u8((const uint8_t*)src));
#elif defined(ZSTD_ARCH_X86_SSE2)
_mm_storeu_si128((__m128i*)dst, _mm_loadu_si128((const __m128i*)src));
#elif defined(__clang__)
ZSTD_memmove(dst, src, 16);
#else
ZSTD_memcpy(dst, src, 16);
/* ZSTD_memmove is not inlined properly by gcc */
BYTE copy16_buf[16];
ZSTD_memcpy(copy16_buf, src, 16);
ZSTD_memcpy(dst, copy16_buf, 16);
#endif
}
#define COPY16(d,s) { ZSTD_copy16(d,s); d+=16; s+=16; }
@@ -288,8 +223,6 @@ void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e
BYTE* op = (BYTE*)dst;
BYTE* const oend = op + length;
assert(diff >= 8 || (ovtype == ZSTD_no_overlap && diff <= -WILDCOPY_VECLEN));
if (ovtype == ZSTD_overlap_src_before_dst && diff < WILDCOPY_VECLEN) {
/* Handle short offset copies. */
do {
@@ -436,8 +369,14 @@ MEM_STATIC U32 ZSTD_highbit32(U32 val) /* compress, dictBuilder, decodeCorpus
# if STATIC_BMI2 == 1
return _lzcnt_u32(val)^31;
# else
unsigned long r=0;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
if (val != 0) {
unsigned long r;
_BitScanReverse(&r, val);
return (unsigned)r;
} else {
/* Should not reach this code path */
__assume(0);
}
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */
return __builtin_clz (val) ^ 31;
@@ -456,6 +395,63 @@ MEM_STATIC U32 ZSTD_highbit32(U32 val) /* compress, dictBuilder, decodeCorpus
}
}
/**
* Counts the number of trailing zeros of a `size_t`.
* Most compilers should support CTZ as a builtin. A backup
* implementation is provided if the builtin isn't supported, but
* it may not be terribly efficient.
*/
MEM_STATIC unsigned ZSTD_countTrailingZeros(size_t val)
{
if (MEM_64bits()) {
# if defined(_MSC_VER) && defined(_WIN64)
# if STATIC_BMI2
return _tzcnt_u64(val);
# else
if (val != 0) {
unsigned long r;
_BitScanForward64(&r, (U64)val);
return (unsigned)r;
} else {
/* Should not reach this code path */
__assume(0);
}
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return __builtin_ctzll((U64)val);
# else
static const int DeBruijnBytePos[64] = { 0, 1, 2, 7, 3, 13, 8, 19,
4, 25, 14, 28, 9, 34, 20, 56,
5, 17, 26, 54, 15, 41, 29, 43,
10, 31, 38, 35, 21, 45, 49, 57,
63, 6, 12, 18, 24, 27, 33, 55,
16, 53, 40, 42, 30, 37, 44, 48,
62, 11, 23, 32, 52, 39, 36, 47,
61, 22, 51, 46, 60, 50, 59, 58 };
return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
# endif
} else { /* 32 bits */
# if defined(_MSC_VER)
if (val != 0) {
unsigned long r;
_BitScanForward(&r, (U32)val);
return (unsigned)r;
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return __builtin_ctz((U32)val);
# else
static const int DeBruijnBytePos[32] = { 0, 1, 28, 2, 29, 14, 24, 3,
30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7,
26, 12, 18, 6, 11, 5, 10, 9 };
return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
# endif
}
}
/* ZSTD_invalidateRepCodes() :
* ensures next compression will not use repcodes from previous block.
@@ -482,6 +478,14 @@ size_t ZSTD_getcBlockSize(const void* src, size_t srcSize,
size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr,
const void* src, size_t srcSize);
/**
* @returns true iff the CPU supports dynamic BMI2 dispatch.
*/
MEM_STATIC int ZSTD_cpuSupportsBmi2(void)
{
ZSTD_cpuid_t cpuid = ZSTD_cpuid();
return ZSTD_cpuid_bmi1(cpuid) && ZSTD_cpuid_bmi2(cpuid);
}
#if defined (__cplusplus)
}
lib/common/zstd_trace.h
+12 -3
View File
@@ -17,10 +17,19 @@ extern "C" {
#include <stddef.h>
/* weak symbol support */
#if !defined(ZSTD_HAVE_WEAK_SYMBOLS) && defined(__GNUC__) && \
/* weak symbol support
* For now, enable conservatively:
* - Only GNUC
* - Only ELF
* - Only x86-64 and i386
* Also, explicitly disable on platforms known not to work so they aren't
* forgotten in the future.
*/
#if !defined(ZSTD_HAVE_WEAK_SYMBOLS) && \
defined(__GNUC__) && defined(__ELF__) && \
(defined(__x86_64__) || defined(_M_X64) || defined(__i386__) || defined(_M_IX86)) && \
!defined(__APPLE__) && !defined(_WIN32) && !defined(__MINGW32__) && \
!defined(__CYGWIN__)
!defined(__CYGWIN__) && !defined(_AIX)
# define ZSTD_HAVE_WEAK_SYMBOLS 1
#else
# define ZSTD_HAVE_WEAK_SYMBOLS 0
lib/compress/clevels.h
+134
View File
@@ -0,0 +1,134 @@
/*
* Copyright (c) Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#ifndef ZSTD_CLEVELS_H
#define ZSTD_CLEVELS_H
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_compressionParameters */
#include "../zstd.h"
/*-===== Pre-defined compression levels =====-*/
#define ZSTD_MAX_CLEVEL 22
#ifdef __GNUC__
__attribute__((__unused__))
#endif
static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ /* "default" - for any srcSize > 256 KB */
/* W, C, H, S, L, TL, strat */
{ 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */
{ 19, 13, 14, 1, 7, 0, ZSTD_fast }, /* level 1 */
{ 20, 15, 16, 1, 6, 0, ZSTD_fast }, /* level 2 */
{ 21, 16, 17, 1, 5, 0, ZSTD_dfast }, /* level 3 */
{ 21, 18, 18, 1, 5, 0, ZSTD_dfast }, /* level 4 */
{ 21, 18, 19, 3, 5, 2, ZSTD_greedy }, /* level 5 */
{ 21, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6 */
{ 21, 19, 20, 4, 5, 8, ZSTD_lazy }, /* level 7 */
{ 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 8 */
{ 22, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */
{ 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 22, 21, 22, 6, 5, 16, ZSTD_lazy2 }, /* level 11 */
{ 22, 22, 23, 6, 5, 32, ZSTD_lazy2 }, /* level 12 */
{ 22, 22, 22, 4, 5, 32, ZSTD_btlazy2 }, /* level 13 */
{ 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */
{ 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */
{ 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */
{ 23, 23, 22, 5, 4, 64, ZSTD_btopt }, /* level 17 */
{ 23, 23, 22, 6, 3, 64, ZSTD_btultra }, /* level 18 */
{ 23, 24, 22, 7, 3,256, ZSTD_btultra2}, /* level 19 */
{ 25, 25, 23, 7, 3,256, ZSTD_btultra2}, /* level 20 */
{ 26, 26, 24, 7, 3,512, ZSTD_btultra2}, /* level 21 */
{ 27, 27, 25, 9, 3,999, ZSTD_btultra2}, /* level 22 */
},
{ /* for srcSize <= 256 KB */
/* W, C, H, S, L, T, strat */
{ 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 18, 13, 14, 1, 6, 0, ZSTD_fast }, /* level 1 */
{ 18, 14, 14, 1, 5, 0, ZSTD_dfast }, /* level 2 */
{ 18, 16, 16, 1, 4, 0, ZSTD_dfast }, /* level 3 */
{ 18, 16, 17, 3, 5, 2, ZSTD_greedy }, /* level 4.*/
{ 18, 17, 18, 5, 5, 2, ZSTD_greedy }, /* level 5.*/
{ 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/
{ 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */
{ 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 18, 18, 19, 5, 4, 12, ZSTD_btlazy2 }, /* level 11.*/
{ 18, 19, 19, 7, 4, 12, ZSTD_btlazy2 }, /* level 12.*/
{ 18, 18, 19, 4, 4, 16, ZSTD_btopt }, /* level 13 */
{ 18, 18, 19, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
{ 18, 18, 19, 6, 3,128, ZSTD_btopt }, /* level 15.*/
{ 18, 19, 19, 6, 3,128, ZSTD_btultra }, /* level 16.*/
{ 18, 19, 19, 8, 3,256, ZSTD_btultra }, /* level 17.*/
{ 18, 19, 19, 6, 3,128, ZSTD_btultra2}, /* level 18.*/
{ 18, 19, 19, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 18, 19, 19, 10, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 18, 19, 19, 12, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 18, 19, 19, 13, 3,999, ZSTD_btultra2}, /* level 22.*/
},
{ /* for srcSize <= 128 KB */
/* W, C, H, S, L, T, strat */
{ 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 17, 12, 13, 1, 6, 0, ZSTD_fast }, /* level 1 */
{ 17, 13, 15, 1, 5, 0, ZSTD_fast }, /* level 2 */
{ 17, 15, 16, 2, 5, 0, ZSTD_dfast }, /* level 3 */
{ 17, 17, 17, 2, 4, 0, ZSTD_dfast }, /* level 4 */
{ 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */
{ 17, 16, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */
{ 17, 16, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 17, 16, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 17, 16, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 17, 16, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 17, 17, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 11 */
{ 17, 18, 17, 7, 4, 12, ZSTD_btlazy2 }, /* level 12 */
{ 17, 18, 17, 3, 4, 12, ZSTD_btopt }, /* level 13.*/
{ 17, 18, 17, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
{ 17, 18, 17, 6, 3,256, ZSTD_btopt }, /* level 15.*/
{ 17, 18, 17, 6, 3,128, ZSTD_btultra }, /* level 16.*/
{ 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 17.*/
{ 17, 18, 17, 10, 3,512, ZSTD_btultra }, /* level 18.*/
{ 17, 18, 17, 5, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 17, 18, 17, 7, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 17, 18, 17, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 17, 18, 17, 11, 3,999, ZSTD_btultra2}, /* level 22.*/
},
{ /* for srcSize <= 16 KB */
/* W, C, H, S, L, T, strat */
{ 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 14, 14, 15, 1, 5, 0, ZSTD_fast }, /* level 1 */
{ 14, 14, 15, 1, 4, 0, ZSTD_fast }, /* level 2 */
{ 14, 14, 15, 2, 4, 0, ZSTD_dfast }, /* level 3 */
{ 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4 */
{ 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/
{ 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */
{ 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/
{ 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/
{ 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/
{ 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/
{ 14, 15, 14, 4, 3, 24, ZSTD_btopt }, /* level 12.*/
{ 14, 15, 14, 5, 3, 32, ZSTD_btultra }, /* level 13.*/
{ 14, 15, 15, 6, 3, 64, ZSTD_btultra }, /* level 14.*/
{ 14, 15, 15, 7, 3,256, ZSTD_btultra }, /* level 15.*/
{ 14, 15, 15, 5, 3, 48, ZSTD_btultra2}, /* level 16.*/
{ 14, 15, 15, 6, 3,128, ZSTD_btultra2}, /* level 17.*/
{ 14, 15, 15, 7, 3,256, ZSTD_btultra2}, /* level 18.*/
{ 14, 15, 15, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 14, 15, 15, 8, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 14, 15, 15, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 14, 15, 15, 10, 3,999, ZSTD_btultra2}, /* level 22.*/
},
};
#endif /* ZSTD_CLEVELS_H */
lib/compress/fse_compress.c
+63 -27
View File
@@ -75,13 +75,14 @@ size_t FSE_buildCTable_wksp(FSE_CTable* ct,
void* const FSCT = ((U32*)ptr) + 1 /* header */ + (tableLog ? tableSize>>1 : 1) ;
FSE_symbolCompressionTransform* const symbolTT = (FSE_symbolCompressionTransform*) (FSCT);
U32 const step = FSE_TABLESTEP(tableSize);
U32 const maxSV1 = maxSymbolValue+1;
U32* cumul = (U32*)workSpace;
FSE_FUNCTION_TYPE* tableSymbol = (FSE_FUNCTION_TYPE*)(cumul + (maxSymbolValue + 2));
U16* cumul = (U16*)workSpace; /* size = maxSV1 */
FSE_FUNCTION_TYPE* const tableSymbol = (FSE_FUNCTION_TYPE*)(cumul + (maxSV1+1)); /* size = tableSize */
U32 highThreshold = tableSize-1;
if ((size_t)workSpace & 3) return ERROR(GENERIC); /* Must be 4 byte aligned */
assert(((size_t)workSpace & 1) == 0); /* Must be 2 bytes-aligned */
if (FSE_BUILD_CTABLE_WORKSPACE_SIZE(maxSymbolValue, tableLog) > wkspSize) return ERROR(tableLog_tooLarge);
/* CTable header */
tableU16[-2] = (U16) tableLog;
@@ -98,20 +99,61 @@ size_t FSE_buildCTable_wksp(FSE_CTable* ct,
/* symbol start positions */
{ U32 u;
cumul[0] = 0;
for (u=1; u <= maxSymbolValue+1; u++) {
for (u=1; u <= maxSV1; u++) {
if (normalizedCounter[u-1]==-1) { /* Low proba symbol */
cumul[u] = cumul[u-1] + 1;
tableSymbol[highThreshold--] = (FSE_FUNCTION_TYPE)(u-1);
} else {
cumul[u] = cumul[u-1] + normalizedCounter[u-1];
assert(normalizedCounter[u-1] >= 0);
cumul[u] = cumul[u-1] + (U16)normalizedCounter[u-1];
assert(cumul[u] >= cumul[u-1]); /* no overflow */
} }
cumul[maxSymbolValue+1] = tableSize+1;
cumul[maxSV1] = (U16)(tableSize+1);
}
/* Spread symbols */
{ U32 position = 0;
if (highThreshold == tableSize - 1) {
/* Case for no low prob count symbols. Lay down 8 bytes at a time
* to reduce branch misses since we are operating on a small block
*/
BYTE* const spread = tableSymbol + tableSize; /* size = tableSize + 8 (may write beyond tableSize) */
{ U64 const add = 0x0101010101010101ull;
size_t pos = 0;
U64 sv = 0;
U32 s;
for (s=0; s<maxSV1; ++s, sv += add) {
int i;
int const n = normalizedCounter[s];
MEM_write64(spread + pos, sv);
for (i = 8; i < n; i += 8) {
MEM_write64(spread + pos + i, sv);
}
assert(n>=0);
pos += (size_t)n;
}
}
/* Spread symbols across the table. Lack of lowprob symbols means that
* we don't need variable sized inner loop, so we can unroll the loop and
* reduce branch misses.
*/
{ size_t position = 0;
size_t s;
size_t const unroll = 2; /* Experimentally determined optimal unroll */
assert(tableSize % unroll == 0); /* FSE_MIN_TABLELOG is 5 */
for (s = 0; s < (size_t)tableSize; s += unroll) {
size_t u;
for (u = 0; u < unroll; ++u) {
size_t const uPosition = (position + (u * step)) & tableMask;
tableSymbol[uPosition] = spread[s + u];
}
position = (position + (unroll * step)) & tableMask;
}
assert(position == 0); /* Must have initialized all positions */
}
} else {
U32 position = 0;
U32 symbol;
for (symbol=0; symbol<=maxSymbolValue; symbol++) {
for (symbol=0; symbol<maxSV1; symbol++) {
int nbOccurrences;
int const freq = normalizedCounter[symbol];
for (nbOccurrences=0; nbOccurrences<freq; nbOccurrences++) {
@@ -120,7 +162,6 @@ size_t FSE_buildCTable_wksp(FSE_CTable* ct,
while (position > highThreshold)
position = (position + step) & tableMask; /* Low proba area */
} }
assert(position==0); /* Must have initialized all positions */
}
@@ -144,16 +185,17 @@ size_t FSE_buildCTable_wksp(FSE_CTable* ct,
case -1:
case 1:
symbolTT[s].deltaNbBits = (tableLog << 16) - (1<<tableLog);
symbolTT[s].deltaFindState = total - 1;
assert(total <= INT_MAX);
symbolTT[s].deltaFindState = (int)(total - 1);
total ++;
break;
default :
{
U32 const maxBitsOut = tableLog - BIT_highbit32 (normalizedCounter[s]-1);
U32 const minStatePlus = normalizedCounter[s] << maxBitsOut;
assert(normalizedCounter[s] > 1);
{ U32 const maxBitsOut = tableLog - BIT_highbit32 ((U32)normalizedCounter[s]-1);
U32 const minStatePlus = (U32)normalizedCounter[s] << maxBitsOut;
symbolTT[s].deltaNbBits = (maxBitsOut << 16) - minStatePlus;
symbolTT[s].deltaFindState = total - normalizedCounter[s];
total += normalizedCounter[s];
symbolTT[s].deltaFindState = (int)(total - (unsigned)normalizedCounter[s]);
total += (unsigned)normalizedCounter[s];
} } } }
#if 0 /* debug : symbol costs */
@@ -164,32 +206,26 @@ size_t FSE_buildCTable_wksp(FSE_CTable* ct,
symbol, normalizedCounter[symbol],
FSE_getMaxNbBits(symbolTT, symbol),
(double)FSE_bitCost(symbolTT, tableLog, symbol, 8) / 256);
}
}
} }
#endif
return 0;
}
#ifndef ZSTD_NO_UNUSED_FUNCTIONS
size_t FSE_buildCTable(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog)
{
FSE_FUNCTION_TYPE tableSymbol[FSE_MAX_TABLESIZE]; /* memset() is not necessary, even if static analyzer complain about it */
return FSE_buildCTable_wksp(ct, normalizedCounter, maxSymbolValue, tableLog, tableSymbol, sizeof(tableSymbol));
}
#endif
#ifndef FSE_COMMONDEFS_ONLY
/*-**************************************************************
* FSE NCount encoding
****************************************************************/
size_t FSE_NCountWriteBound(unsigned maxSymbolValue, unsigned tableLog)
{
size_t const maxHeaderSize = (((maxSymbolValue+1) * tableLog) >> 3) + 3;
size_t const maxHeaderSize = (((maxSymbolValue+1) * tableLog
+ 4 /* bitCount initialized at 4 */
+ 2 /* first two symbols may use one additional bit each */) / 8)
+ 1 /* round up to whole nb bytes */
+ 2 /* additional two bytes for bitstream flush */;
return maxSymbolValue ? maxHeaderSize : FSE_NCOUNTBOUND; /* maxSymbolValue==0 ? use default */
}
lib/compress/huf_compress.c
+538 -105
View File
@@ -53,6 +53,28 @@ unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxS
/* *******************************************************
* HUF : Huffman block compression
*********************************************************/
#define HUF_WORKSPACE_MAX_ALIGNMENT 8
static void* HUF_alignUpWorkspace(void* workspace, size_t* workspaceSizePtr, size_t align)
{
size_t const mask = align - 1;
size_t const rem = (size_t)workspace & mask;
size_t const add = (align - rem) & mask;
BYTE* const aligned = (BYTE*)workspace + add;
assert((align & (align - 1)) == 0); /* pow 2 */
assert(align <= HUF_WORKSPACE_MAX_ALIGNMENT);
if (*workspaceSizePtr >= add) {
assert(add < align);
assert(((size_t)aligned & mask) == 0);
*workspaceSizePtr -= add;
return aligned;
} else {
*workspaceSizePtr = 0;
return NULL;
}
}
/* HUF_compressWeights() :
* Same as FSE_compress(), but dedicated to huff0's weights compression.
* The use case needs much less stack memory.
@@ -75,7 +97,7 @@ static size_t HUF_compressWeights(void* dst, size_t dstSize, const void* weightT
unsigned maxSymbolValue = HUF_TABLELOG_MAX;
U32 tableLog = MAX_FSE_TABLELOG_FOR_HUFF_HEADER;
HUF_CompressWeightsWksp* wksp = (HUF_CompressWeightsWksp*)workspace;
HUF_CompressWeightsWksp* wksp = (HUF_CompressWeightsWksp*)HUF_alignUpWorkspace(workspace, &workspaceSize, ZSTD_ALIGNOF(U32));
if (workspaceSize < sizeof(HUF_CompressWeightsWksp)) return ERROR(GENERIC);
@@ -106,6 +128,40 @@ static size_t HUF_compressWeights(void* dst, size_t dstSize, const void* weightT
return (size_t)(op-ostart);
}
static size_t HUF_getNbBits(HUF_CElt elt)
{
return elt & 0xFF;
}
static size_t HUF_getNbBitsFast(HUF_CElt elt)
{
return elt;
}
static size_t HUF_getValue(HUF_CElt elt)
{
return elt & ~0xFF;
}
static size_t HUF_getValueFast(HUF_CElt elt)
{
return elt;
}
static void HUF_setNbBits(HUF_CElt* elt, size_t nbBits)
{
assert(nbBits <= HUF_TABLELOG_ABSOLUTEMAX);
*elt = nbBits;
}
static void HUF_setValue(HUF_CElt* elt, size_t value)
{
size_t const nbBits = HUF_getNbBits(*elt);
if (nbBits > 0) {
assert((value >> nbBits) == 0);
*elt |= value << (sizeof(HUF_CElt) * 8 - nbBits);
}
}
typedef struct {
HUF_CompressWeightsWksp wksp;
@@ -117,9 +173,10 @@ size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize,
const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog,
void* workspace, size_t workspaceSize)
{
HUF_CElt const* const ct = CTable + 1;
BYTE* op = (BYTE*)dst;
U32 n;
HUF_WriteCTableWksp* wksp = (HUF_WriteCTableWksp*)workspace;
HUF_WriteCTableWksp* wksp = (HUF_WriteCTableWksp*)HUF_alignUpWorkspace(workspace, &workspaceSize, ZSTD_ALIGNOF(U32));
/* check conditions */
if (workspaceSize < sizeof(HUF_WriteCTableWksp)) return ERROR(GENERIC);
@@ -130,9 +187,10 @@ size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize,
for (n=1; n<huffLog+1; n++)
wksp->bitsToWeight[n] = (BYTE)(huffLog + 1 - n);
for (n=0; n<maxSymbolValue; n++)
wksp->huffWeight[n] = wksp->bitsToWeight[CTable[n].nbBits];
wksp->huffWeight[n] = wksp->bitsToWeight[HUF_getNbBits(ct[n])];
/* attempt weights compression by FSE */
if (maxDstSize < 1) return ERROR(dstSize_tooSmall);
{ CHECK_V_F(hSize, HUF_compressWeights(op+1, maxDstSize-1, wksp->huffWeight, maxSymbolValue, &wksp->wksp, sizeof(wksp->wksp)) );
if ((hSize>1) & (hSize < maxSymbolValue/2)) { /* FSE compressed */
op[0] = (BYTE)hSize;
@@ -166,6 +224,7 @@ size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void
U32 rankVal[HUF_TABLELOG_ABSOLUTEMAX + 1]; /* large enough for values from 0 to 16 */
U32 tableLog = 0;
U32 nbSymbols = 0;
HUF_CElt* const ct = CTable + 1;
/* get symbol weights */
CHECK_V_F(readSize, HUF_readStats(huffWeight, HUF_SYMBOLVALUE_MAX+1, rankVal, &nbSymbols, &tableLog, src, srcSize));
@@ -175,6 +234,8 @@ size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void
if (tableLog > HUF_TABLELOG_MAX) return ERROR(tableLog_tooLarge);
if (nbSymbols > *maxSymbolValuePtr+1) return ERROR(maxSymbolValue_tooSmall);
CTable[0] = tableLog;
/* Prepare base value per rank */
{ U32 n, nextRankStart = 0;
for (n=1; n<=tableLog; n++) {
@@ -186,13 +247,13 @@ size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void
/* fill nbBits */
{ U32 n; for (n=0; n<nbSymbols; n++) {
const U32 w = huffWeight[n];
CTable[n].nbBits = (BYTE)(tableLog + 1 - w) & -(w != 0);
HUF_setNbBits(ct + n, (BYTE)(tableLog + 1 - w) & -(w != 0));
} }
/* fill val */
{ U16 nbPerRank[HUF_TABLELOG_MAX+2] = {0}; /* support w=0=>n=tableLog+1 */
U16 valPerRank[HUF_TABLELOG_MAX+2] = {0};
{ U32 n; for (n=0; n<nbSymbols; n++) nbPerRank[CTable[n].nbBits]++; }
{ U32 n; for (n=0; n<nbSymbols; n++) nbPerRank[HUF_getNbBits(ct[n])]++; }
/* determine stating value per rank */
valPerRank[tableLog+1] = 0; /* for w==0 */
{ U16 min = 0;
@@ -202,18 +263,18 @@ size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void
min >>= 1;
} }
/* assign value within rank, symbol order */
{ U32 n; for (n=0; n<nbSymbols; n++) CTable[n].val = valPerRank[CTable[n].nbBits]++; }
{ U32 n; for (n=0; n<nbSymbols; n++) HUF_setValue(ct + n, valPerRank[HUF_getNbBits(ct[n])]++); }
}
*maxSymbolValuePtr = nbSymbols - 1;
return readSize;
}
U32 HUF_getNbBits(const void* symbolTable, U32 symbolValue)
U32 HUF_getNbBitsFromCTable(HUF_CElt const* CTable, U32 symbolValue)
{
const HUF_CElt* table = (const HUF_CElt*)symbolTable;
const HUF_CElt* ct = CTable + 1;
assert(symbolValue <= HUF_SYMBOLVALUE_MAX);
return table[symbolValue].nbBits;
return (U32)HUF_getNbBits(ct[symbolValue]);
}
@@ -367,22 +428,118 @@ static U32 HUF_setMaxHeight(nodeElt* huffNode, U32 lastNonNull, U32 maxNbBits)
}
typedef struct {
U32 base;
U32 curr;
U16 base;
U16 curr;
} rankPos;
typedef nodeElt huffNodeTable[HUF_CTABLE_WORKSPACE_SIZE_U32];
#define RANK_POSITION_TABLE_SIZE 32
/* Number of buckets available for HUF_sort() */
#define RANK_POSITION_TABLE_SIZE 192
typedef struct {
huffNodeTable huffNodeTbl;
rankPos rankPosition[RANK_POSITION_TABLE_SIZE];
} HUF_buildCTable_wksp_tables;
/* RANK_POSITION_DISTINCT_COUNT_CUTOFF == Cutoff point in HUF_sort() buckets for which we use log2 bucketing.
* Strategy is to use as many buckets as possible for representing distinct
* counts while using the remainder to represent all "large" counts.
*
* To satisfy this requirement for 192 buckets, we can do the following:
* Let buckets 0-166 represent distinct counts of [0, 166]
* Let buckets 166 to 192 represent all remaining counts up to RANK_POSITION_MAX_COUNT_LOG using log2 bucketing.
*/
#define RANK_POSITION_MAX_COUNT_LOG 32
#define RANK_POSITION_LOG_BUCKETS_BEGIN (RANK_POSITION_TABLE_SIZE - 1) - RANK_POSITION_MAX_COUNT_LOG - 1 /* == 158 */
#define RANK_POSITION_DISTINCT_COUNT_CUTOFF RANK_POSITION_LOG_BUCKETS_BEGIN + BIT_highbit32(RANK_POSITION_LOG_BUCKETS_BEGIN) /* == 166 */
/* Return the appropriate bucket index for a given count. See definition of
* RANK_POSITION_DISTINCT_COUNT_CUTOFF for explanation of bucketing strategy.
*/
static U32 HUF_getIndex(U32 const count) {
return (count < RANK_POSITION_DISTINCT_COUNT_CUTOFF)
? count
: BIT_highbit32(count) + RANK_POSITION_LOG_BUCKETS_BEGIN;
}
/* Helper swap function for HUF_quickSortPartition() */
static void HUF_swapNodes(nodeElt* a, nodeElt* b) {
nodeElt tmp = *a;
*a = *b;
*b = tmp;
}
/* Returns 0 if the huffNode array is not sorted by descending count */
MEM_STATIC int HUF_isSorted(nodeElt huffNode[], U32 const maxSymbolValue1) {
U32 i;
for (i = 1; i < maxSymbolValue1; ++i) {
if (huffNode[i].count > huffNode[i-1].count) {
return 0;
}
}
return 1;
}
/* Insertion sort by descending order */
HINT_INLINE void HUF_insertionSort(nodeElt huffNode[], int const low, int const high) {
int i;
int const size = high-low+1;
huffNode += low;
for (i = 1; i < size; ++i) {
nodeElt const key = huffNode[i];
int j = i - 1;
while (j >= 0 && huffNode[j].count < key.count) {
huffNode[j + 1] = huffNode[j];
j--;
}
huffNode[j + 1] = key;
}
}
/* Pivot helper function for quicksort. */
static int HUF_quickSortPartition(nodeElt arr[], int const low, int const high) {
/* Simply select rightmost element as pivot. "Better" selectors like
* median-of-three don't experimentally appear to have any benefit.
*/
U32 const pivot = arr[high].count;
int i = low - 1;
int j = low;
for ( ; j < high; j++) {
if (arr[j].count > pivot) {
i++;
HUF_swapNodes(&arr[i], &arr[j]);
}
}
HUF_swapNodes(&arr[i + 1], &arr[high]);
return i + 1;
}
/* Classic quicksort by descending with partially iterative calls
* to reduce worst case callstack size.
*/
static void HUF_simpleQuickSort(nodeElt arr[], int low, int high) {
int const kInsertionSortThreshold = 8;
if (high - low < kInsertionSortThreshold) {
HUF_insertionSort(arr, low, high);
return;
}
while (low < high) {
int const idx = HUF_quickSortPartition(arr, low, high);
if (idx - low < high - idx) {
HUF_simpleQuickSort(arr, low, idx - 1);
low = idx + 1;
} else {
HUF_simpleQuickSort(arr, idx + 1, high);
high = idx - 1;
}
}
}
/**
* HUF_sort():
* Sorts the symbols [0, maxSymbolValue] by count[symbol] in decreasing order.
* This is a typical bucket sorting strategy that uses either quicksort or insertion sort to sort each bucket.
*
* @param[out] huffNode Sorted symbols by decreasing count. Only members `.count` and `.byte` are filled.
* Must have (maxSymbolValue + 1) entries.
@@ -390,44 +547,52 @@ typedef struct {
* @param[in] maxSymbolValue Maximum symbol value.
* @param rankPosition This is a scratch workspace. Must have RANK_POSITION_TABLE_SIZE entries.
*/
static void HUF_sort(nodeElt* huffNode, const unsigned* count, U32 maxSymbolValue, rankPos* rankPosition)
{
int n;
int const maxSymbolValue1 = (int)maxSymbolValue + 1;
static void HUF_sort(nodeElt huffNode[], const unsigned count[], U32 const maxSymbolValue, rankPos rankPosition[]) {
U32 n;
U32 const maxSymbolValue1 = maxSymbolValue+1;
/* Compute base and set curr to base.
* For symbol s let lowerRank = BIT_highbit32(count[n]+1) and rank = lowerRank + 1.
* Then 2^lowerRank <= count[n]+1 <= 2^rank.
* For symbol s let lowerRank = HUF_getIndex(count[n]) and rank = lowerRank + 1.
* See HUF_getIndex to see bucketing strategy.
* We attribute each symbol to lowerRank's base value, because we want to know where
* each rank begins in the output, so for rank R we want to count ranks R+1 and above.
*/
ZSTD_memset(rankPosition, 0, sizeof(*rankPosition) * RANK_POSITION_TABLE_SIZE);
for (n = 0; n < maxSymbolValue1; ++n) {
U32 lowerRank = BIT_highbit32(count[n] + 1);
U32 lowerRank = HUF_getIndex(count[n]);
assert(lowerRank < RANK_POSITION_TABLE_SIZE - 1);
rankPosition[lowerRank].base++;
}
assert(rankPosition[RANK_POSITION_TABLE_SIZE - 1].base == 0);
/* Set up the rankPosition table */
for (n = RANK_POSITION_TABLE_SIZE - 1; n > 0; --n) {
rankPosition[n-1].base += rankPosition[n].base;
rankPosition[n-1].curr = rankPosition[n-1].base;
}
/* Sort */
/* Insert each symbol into their appropriate bucket, setting up rankPosition table. */
for (n = 0; n < maxSymbolValue1; ++n) {
U32 const c = count[n];
U32 const r = BIT_highbit32(c+1) + 1;
U32 pos = rankPosition[r].curr++;
/* Insert into the correct position in the rank.
* We have at most 256 symbols, so this insertion should be fine.
*/
while ((pos > rankPosition[r].base) && (c > huffNode[pos-1].count)) {
huffNode[pos] = huffNode[pos-1];
pos--;
}
U32 const r = HUF_getIndex(c) + 1;
U32 const pos = rankPosition[r].curr++;
assert(pos < maxSymbolValue1);
huffNode[pos].count = c;
huffNode[pos].byte = (BYTE)n;
}
}
/* Sort each bucket. */
for (n = RANK_POSITION_DISTINCT_COUNT_CUTOFF; n < RANK_POSITION_TABLE_SIZE - 1; ++n) {
U32 const bucketSize = rankPosition[n].curr-rankPosition[n].base;
U32 const bucketStartIdx = rankPosition[n].base;
if (bucketSize > 1) {
assert(bucketStartIdx < maxSymbolValue1);
HUF_simpleQuickSort(huffNode + bucketStartIdx, 0, bucketSize-1);
}
}
assert(HUF_isSorted(huffNode, maxSymbolValue1));
}
/** HUF_buildCTable_wksp() :
* Same as HUF_buildCTable(), but using externally allocated scratch buffer.
@@ -490,6 +655,7 @@ static int HUF_buildTree(nodeElt* huffNode, U32 maxSymbolValue)
*/
static void HUF_buildCTableFromTree(HUF_CElt* CTable, nodeElt const* huffNode, int nonNullRank, U32 maxSymbolValue, U32 maxNbBits)
{
HUF_CElt* const ct = CTable + 1;
/* fill result into ctable (val, nbBits) */
int n;
U16 nbPerRank[HUF_TABLELOG_MAX+1] = {0};
@@ -505,20 +671,20 @@ static void HUF_buildCTableFromTree(HUF_CElt* CTable, nodeElt const* huffNode, i
min >>= 1;
} }
for (n=0; n<alphabetSize; n++)
CTable[huffNode[n].byte].nbBits = huffNode[n].nbBits; /* push nbBits per symbol, symbol order */
HUF_setNbBits(ct + huffNode[n].byte, huffNode[n].nbBits); /* push nbBits per symbol, symbol order */
for (n=0; n<alphabetSize; n++)
CTable[n].val = valPerRank[CTable[n].nbBits]++; /* assign value within rank, symbol order */
HUF_setValue(ct + n, valPerRank[HUF_getNbBits(ct[n])]++); /* assign value within rank, symbol order */
CTable[0] = maxNbBits;
}
size_t HUF_buildCTable_wksp (HUF_CElt* tree, const unsigned* count, U32 maxSymbolValue, U32 maxNbBits, void* workSpace, size_t wkspSize)
size_t HUF_buildCTable_wksp (HUF_CElt* CTable, const unsigned* count, U32 maxSymbolValue, U32 maxNbBits, void* workSpace, size_t wkspSize)
{
HUF_buildCTable_wksp_tables* const wksp_tables = (HUF_buildCTable_wksp_tables*)workSpace;
HUF_buildCTable_wksp_tables* const wksp_tables = (HUF_buildCTable_wksp_tables*)HUF_alignUpWorkspace(workSpace, &wkspSize, ZSTD_ALIGNOF(U32));
nodeElt* const huffNode0 = wksp_tables->huffNodeTbl;
nodeElt* const huffNode = huffNode0+1;
int nonNullRank;
/* safety checks */
if (((size_t)workSpace & 3) != 0) return ERROR(GENERIC); /* must be aligned on 4-bytes boundaries */
if (wkspSize < sizeof(HUF_buildCTable_wksp_tables))
return ERROR(workSpace_tooSmall);
if (maxNbBits == 0) maxNbBits = HUF_TABLELOG_DEFAULT;
@@ -536,96 +702,334 @@ size_t HUF_buildCTable_wksp (HUF_CElt* tree, const unsigned* count, U32 maxSymbo
maxNbBits = HUF_setMaxHeight(huffNode, (U32)nonNullRank, maxNbBits);
if (maxNbBits > HUF_TABLELOG_MAX) return ERROR(GENERIC); /* check fit into table */
HUF_buildCTableFromTree(tree, huffNode, nonNullRank, maxSymbolValue, maxNbBits);
HUF_buildCTableFromTree(CTable, huffNode, nonNullRank, maxSymbolValue, maxNbBits);
return maxNbBits;
}
size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue)
{
HUF_CElt const* ct = CTable + 1;
size_t nbBits = 0;
int s;
for (s = 0; s <= (int)maxSymbolValue; ++s) {
nbBits += CTable[s].nbBits * count[s];
nbBits += HUF_getNbBits(ct[s]) * count[s];
}
return nbBits >> 3;
}
int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue) {
HUF_CElt const* ct = CTable + 1;
int bad = 0;
int s;
for (s = 0; s <= (int)maxSymbolValue; ++s) {
bad |= (count[s] != 0) & (CTable[s].nbBits == 0);
bad |= (count[s] != 0) & (HUF_getNbBits(ct[s]) == 0);
}
return !bad;
}
size_t HUF_compressBound(size_t size) { return HUF_COMPRESSBOUND(size); }
FORCE_INLINE_TEMPLATE void
HUF_encodeSymbol(BIT_CStream_t* bitCPtr, U32 symbol, const HUF_CElt* CTable)
/** HUF_CStream_t:
* Huffman uses its own BIT_CStream_t implementation.
* There are three major differences from BIT_CStream_t:
* 1. HUF_addBits() takes a HUF_CElt (size_t) which is
* the pair (nbBits, value) in the format:
* format:
* - Bits [0, 4) = nbBits
* - Bits [4, 64 - nbBits) = 0
* - Bits [64 - nbBits, 64) = value
* 2. The bitContainer is built from the upper bits and
* right shifted. E.g. to add a new value of N bits
* you right shift the bitContainer by N, then or in
* the new value into the N upper bits.
* 3. The bitstream has two bit containers. You can add
* bits to the second container and merge them into
* the first container.
*/
#define HUF_BITS_IN_CONTAINER (sizeof(size_t) * 8)
typedef struct {
size_t bitContainer[2];
size_t bitPos[2];
BYTE* startPtr;
BYTE* ptr;
BYTE* endPtr;
} HUF_CStream_t;
/**! HUF_initCStream():
* Initializes the bitstream.
* @returns 0 or an error code.
*/
static size_t HUF_initCStream(HUF_CStream_t* bitC,
void* startPtr, size_t dstCapacity)
{
BIT_addBitsFast(bitCPtr, CTable[symbol].val, CTable[symbol].nbBits);
ZSTD_memset(bitC, 0, sizeof(*bitC));
bitC->startPtr = (BYTE*)startPtr;
bitC->ptr = bitC->startPtr;
bitC->endPtr = bitC->startPtr + dstCapacity - sizeof(bitC->bitContainer[0]);
if (dstCapacity <= sizeof(bitC->bitContainer[0])) return ERROR(dstSize_tooSmall);
return 0;
}
#define HUF_FLUSHBITS(s) BIT_flushBits(s)
/*! HUF_addBits():
* Adds the symbol stored in HUF_CElt elt to the bitstream.
*
* @param elt The element we're adding. This is a (nbBits, value) pair.
* See the HUF_CStream_t docs for the format.
* @param idx Insert into the bitstream at this idx.
* @param kFast This is a template parameter. If the bitstream is guaranteed
* to have at least 4 unused bits after this call it may be 1,
* otherwise it must be 0. HUF_addBits() is faster when fast is set.
*/
FORCE_INLINE_TEMPLATE void HUF_addBits(HUF_CStream_t* bitC, HUF_CElt elt, int idx, int kFast)
{
assert(idx <= 1);
assert(HUF_getNbBits(elt) <= HUF_TABLELOG_ABSOLUTEMAX);
/* This is efficient on x86-64 with BMI2 because shrx
* only reads the low 6 bits of the register. The compiler
* knows this and elides the mask. When fast is set,
* every operation can use the same value loaded from elt.
*/
bitC->bitContainer[idx] >>= HUF_getNbBits(elt);
bitC->bitContainer[idx] |= kFast ? HUF_getValueFast(elt) : HUF_getValue(elt);
/* We only read the low 8 bits of bitC->bitPos[idx] so it
* doesn't matter that the high bits have noise from the value.
*/
bitC->bitPos[idx] += HUF_getNbBitsFast(elt);
assert((bitC->bitPos[idx] & 0xFF) <= HUF_BITS_IN_CONTAINER);
/* The last 4-bits of elt are dirty if fast is set,
* so we must not be overwriting bits that have already been
* inserted into the bit container.
*/
#if DEBUGLEVEL >= 1
{
size_t const nbBits = HUF_getNbBits(elt);
size_t const dirtyBits = nbBits == 0 ? 0 : BIT_highbit32((U32)nbBits) + 1;
(void)dirtyBits;
/* Middle bits are 0. */
assert(((elt >> dirtyBits) << (dirtyBits + nbBits)) == 0);
/* We didn't overwrite any bits in the bit container. */
assert(!kFast || (bitC->bitPos[idx] & 0xFF) <= HUF_BITS_IN_CONTAINER);
(void)dirtyBits;
}
#endif
}
#define HUF_FLUSHBITS_1(stream) \
if (sizeof((stream)->bitContainer)*8 < HUF_TABLELOG_MAX*2+7) HUF_FLUSHBITS(stream)
FORCE_INLINE_TEMPLATE void HUF_zeroIndex1(HUF_CStream_t* bitC)
{
bitC->bitContainer[1] = 0;
bitC->bitPos[1] = 0;
}
/*! HUF_mergeIndex1() :
* Merges the bit container @ index 1 into the bit container @ index 0
* and zeros the bit container @ index 1.
*/
FORCE_INLINE_TEMPLATE void HUF_mergeIndex1(HUF_CStream_t* bitC)
{
assert((bitC->bitPos[1] & 0xFF) < HUF_BITS_IN_CONTAINER);
bitC->bitContainer[0] >>= (bitC->bitPos[1] & 0xFF);
bitC->bitContainer[0] |= bitC->bitContainer[1];
bitC->bitPos[0] += bitC->bitPos[1];
assert((bitC->bitPos[0] & 0xFF) <= HUF_BITS_IN_CONTAINER);
}
/*! HUF_flushBits() :
* Flushes the bits in the bit container @ index 0.
*
* @post bitPos will be < 8.
* @param kFast If kFast is set then we must know a-priori that
* the bit container will not overflow.
*/
FORCE_INLINE_TEMPLATE void HUF_flushBits(HUF_CStream_t* bitC, int kFast)
{
/* The upper bits of bitPos are noisy, so we must mask by 0xFF. */
size_t const nbBits = bitC->bitPos[0] & 0xFF;
size_t const nbBytes = nbBits >> 3;
/* The top nbBits bits of bitContainer are the ones we need. */
size_t const bitContainer = bitC->bitContainer[0] >> (HUF_BITS_IN_CONTAINER - nbBits);
/* Mask bitPos to account for the bytes we consumed. */
bitC->bitPos[0] &= 7;
assert(nbBits > 0);
assert(nbBits <= sizeof(bitC->bitContainer[0]) * 8);
assert(bitC->ptr <= bitC->endPtr);
MEM_writeLEST(bitC->ptr, bitContainer);
bitC->ptr += nbBytes;
assert(!kFast || bitC->ptr <= bitC->endPtr);
if (!kFast && bitC->ptr > bitC->endPtr) bitC->ptr = bitC->endPtr;
/* bitContainer doesn't need to be modified because the leftover
* bits are already the top bitPos bits. And we don't care about
* noise in the lower values.
*/
}
/*! HUF_endMark()
* @returns The Huffman stream end mark: A 1-bit value = 1.
*/
static HUF_CElt HUF_endMark(void)
{
HUF_CElt endMark;
HUF_setNbBits(&endMark, 1);
HUF_setValue(&endMark, 1);
return endMark;
}
/*! HUF_closeCStream() :
* @return Size of CStream, in bytes,
* or 0 if it could not fit into dstBuffer */
static size_t HUF_closeCStream(HUF_CStream_t* bitC)
{
HUF_addBits(bitC, HUF_endMark(), /* idx */ 0, /* kFast */ 0);
HUF_flushBits(bitC, /* kFast */ 0);
{
size_t const nbBits = bitC->bitPos[0] & 0xFF;
if (bitC->ptr >= bitC->endPtr) return 0; /* overflow detected */
return (bitC->ptr - bitC->startPtr) + (nbBits > 0);
}
}
FORCE_INLINE_TEMPLATE void
HUF_encodeSymbol(HUF_CStream_t* bitCPtr, U32 symbol, const HUF_CElt* CTable, int idx, int fast)
{
HUF_addBits(bitCPtr, CTable[symbol], idx, fast);
}
FORCE_INLINE_TEMPLATE void
HUF_compress1X_usingCTable_internal_body_loop(HUF_CStream_t* bitC,
const BYTE* ip, size_t srcSize,
const HUF_CElt* ct,
int kUnroll, int kFastFlush, int kLastFast)
{
/* Join to kUnroll */
int n = (int)srcSize;
int rem = n % kUnroll;
if (rem > 0) {
for (; rem > 0; --rem) {
HUF_encodeSymbol(bitC, ip[--n], ct, 0, /* fast */ 0);
}
HUF_flushBits(bitC, kFastFlush);
}
assert(n % kUnroll == 0);
/* Join to 2 * kUnroll */
if (n % (2 * kUnroll)) {
int u;
for (u = 1; u < kUnroll; ++u) {
HUF_encodeSymbol(bitC, ip[n - u], ct, 0, 1);
}
HUF_encodeSymbol(bitC, ip[n - kUnroll], ct, 0, kLastFast);
HUF_flushBits(bitC, kFastFlush);
n -= kUnroll;
}
assert(n % (2 * kUnroll) == 0);
for (; n>0; n-= 2 * kUnroll) {
/* Encode kUnroll symbols into the bitstream @ index 0. */
int u;
for (u = 1; u < kUnroll; ++u) {
HUF_encodeSymbol(bitC, ip[n - u], ct, /* idx */ 0, /* fast */ 1);
}
HUF_encodeSymbol(bitC, ip[n - kUnroll], ct, /* idx */ 0, /* fast */ kLastFast);
HUF_flushBits(bitC, kFastFlush);
/* Encode kUnroll symbols into the bitstream @ index 1.
* This allows us to start filling the bit container
* without any data dependencies.
*/
HUF_zeroIndex1(bitC);
for (u = 1; u < kUnroll; ++u) {
HUF_encodeSymbol(bitC, ip[n - kUnroll - u], ct, /* idx */ 1, /* fast */ 1);
}
HUF_encodeSymbol(bitC, ip[n - kUnroll - kUnroll], ct, /* idx */ 1, /* fast */ kLastFast);
/* Merge bitstream @ index 1 into the bitstream @ index 0 */
HUF_mergeIndex1(bitC);
HUF_flushBits(bitC, kFastFlush);
}
assert(n == 0);
}
/**
* Returns a tight upper bound on the output space needed by Huffman
* with 8 bytes buffer to handle over-writes. If the output is at least
* this large we don't need to do bounds checks during Huffman encoding.
*/
static size_t HUF_tightCompressBound(size_t srcSize, size_t tableLog)
{
return ((srcSize * tableLog) >> 3) + 8;
}
#define HUF_FLUSHBITS_2(stream) \
if (sizeof((stream)->bitContainer)*8 < HUF_TABLELOG_MAX*4+7) HUF_FLUSHBITS(stream)
FORCE_INLINE_TEMPLATE size_t
HUF_compress1X_usingCTable_internal_body(void* dst, size_t dstSize,
const void* src, size_t srcSize,
const HUF_CElt* CTable)
{
U32 const tableLog = (U32)CTable[0];
HUF_CElt const* ct = CTable + 1;
const BYTE* ip = (const BYTE*) src;
BYTE* const ostart = (BYTE*)dst;
BYTE* const oend = ostart + dstSize;
BYTE* op = ostart;
size_t n;
BIT_CStream_t bitC;
HUF_CStream_t bitC;
/* init */
if (dstSize < 8) return 0; /* not enough space to compress */
{ size_t const initErr = BIT_initCStream(&bitC, op, (size_t)(oend-op));
{ size_t const initErr = HUF_initCStream(&bitC, op, (size_t)(oend-op));
if (HUF_isError(initErr)) return 0; }
n = srcSize & ~3; /* join to mod 4 */
switch (srcSize & 3)
{
case 3 : HUF_encodeSymbol(&bitC, ip[n+ 2], CTable);
HUF_FLUSHBITS_2(&bitC);
/* fall-through */
case 2 : HUF_encodeSymbol(&bitC, ip[n+ 1], CTable);
HUF_FLUSHBITS_1(&bitC);
/* fall-through */
case 1 : HUF_encodeSymbol(&bitC, ip[n+ 0], CTable);
HUF_FLUSHBITS(&bitC);
/* fall-through */
case 0 : /* fall-through */
default: break;
if (dstSize < HUF_tightCompressBound(srcSize, (size_t)tableLog) || tableLog > 11)
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ MEM_32bits() ? 2 : 4, /* kFast */ 0, /* kLastFast */ 0);
else {
if (MEM_32bits()) {
switch (tableLog) {
case 11:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 2, /* kFastFlush */ 1, /* kLastFast */ 0);
break;
case 10: ZSTD_FALLTHROUGH;
case 9: ZSTD_FALLTHROUGH;
case 8:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 2, /* kFastFlush */ 1, /* kLastFast */ 1);
break;
case 7: ZSTD_FALLTHROUGH;
default:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 3, /* kFastFlush */ 1, /* kLastFast */ 1);
break;
}
} else {
switch (tableLog) {
case 11:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 5, /* kFastFlush */ 1, /* kLastFast */ 0);
break;
case 10:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 5, /* kFastFlush */ 1, /* kLastFast */ 1);
break;
case 9:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 6, /* kFastFlush */ 1, /* kLastFast */ 0);
break;
case 8:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 7, /* kFastFlush */ 1, /* kLastFast */ 0);
break;
case 7:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 8, /* kFastFlush */ 1, /* kLastFast */ 0);
break;
case 6: ZSTD_FALLTHROUGH;
default:
HUF_compress1X_usingCTable_internal_body_loop(&bitC, ip, srcSize, ct, /* kUnroll */ 9, /* kFastFlush */ 1, /* kLastFast */ 1);
break;
}
}
}
assert(bitC.ptr <= bitC.endPtr);
for (; n>0; n-=4) { /* note : n&3==0 at this stage */
HUF_encodeSymbol(&bitC, ip[n- 1], CTable);
HUF_FLUSHBITS_1(&bitC);
HUF_encodeSymbol(&bitC, ip[n- 2], CTable);
HUF_FLUSHBITS_2(&bitC);
HUF_encodeSymbol(&bitC, ip[n- 3], CTable);
HUF_FLUSHBITS_1(&bitC);
HUF_encodeSymbol(&bitC, ip[n- 4], CTable);
HUF_FLUSHBITS(&bitC);
}
return BIT_closeCStream(&bitC);
return HUF_closeCStream(&bitC);
}
#if DYNAMIC_BMI2
static TARGET_ATTRIBUTE("bmi2") size_t
static BMI2_TARGET_ATTRIBUTE size_t
HUF_compress1X_usingCTable_internal_bmi2(void* dst, size_t dstSize,
const void* src, size_t srcSize,
const HUF_CElt* CTable)
@@ -667,9 +1071,13 @@ HUF_compress1X_usingCTable_internal(void* dst, size_t dstSize,
size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable)
{
return HUF_compress1X_usingCTable_internal(dst, dstSize, src, srcSize, CTable, /* bmi2 */ 0);
return HUF_compress1X_usingCTable_bmi2(dst, dstSize, src, srcSize, CTable, /* bmi2 */ 0);
}
size_t HUF_compress1X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2)
{
return HUF_compress1X_usingCTable_internal(dst, dstSize, src, srcSize, CTable, bmi2);
}
static size_t
HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
@@ -689,8 +1097,7 @@ HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
assert(op <= oend);
{ CHECK_V_F(cSize, HUF_compress1X_usingCTable_internal(op, (size_t)(oend-op), ip, segmentSize, CTable, bmi2) );
if (cSize==0) return 0;
assert(cSize <= 65535);
if (cSize == 0 || cSize > 65535) return 0;
MEM_writeLE16(ostart, (U16)cSize);
op += cSize;
}
@@ -698,8 +1105,7 @@ HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
ip += segmentSize;
assert(op <= oend);
{ CHECK_V_F(cSize, HUF_compress1X_usingCTable_internal(op, (size_t)(oend-op), ip, segmentSize, CTable, bmi2) );
if (cSize==0) return 0;
assert(cSize <= 65535);
if (cSize == 0 || cSize > 65535) return 0;
MEM_writeLE16(ostart+2, (U16)cSize);
op += cSize;
}
@@ -707,8 +1113,7 @@ HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
ip += segmentSize;
assert(op <= oend);
{ CHECK_V_F(cSize, HUF_compress1X_usingCTable_internal(op, (size_t)(oend-op), ip, segmentSize, CTable, bmi2) );
if (cSize==0) return 0;
assert(cSize <= 65535);
if (cSize == 0 || cSize > 65535) return 0;
MEM_writeLE16(ostart+4, (U16)cSize);
op += cSize;
}
@@ -717,7 +1122,7 @@ HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
assert(op <= oend);
assert(ip <= iend);
{ CHECK_V_F(cSize, HUF_compress1X_usingCTable_internal(op, (size_t)(oend-op), ip, (size_t)(iend-ip), CTable, bmi2) );
if (cSize==0) return 0;
if (cSize == 0 || cSize > 65535) return 0;
op += cSize;
}
@@ -726,7 +1131,12 @@ HUF_compress4X_usingCTable_internal(void* dst, size_t dstSize,
size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable)
{
return HUF_compress4X_usingCTable_internal(dst, dstSize, src, srcSize, CTable, /* bmi2 */ 0);
return HUF_compress4X_usingCTable_bmi2(dst, dstSize, src, srcSize, CTable, /* bmi2 */ 0);
}
size_t HUF_compress4X_usingCTable_bmi2(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable, int bmi2)
{
return HUF_compress4X_usingCTable_internal(dst, dstSize, src, srcSize, CTable, bmi2);
}
typedef enum { HUF_singleStream, HUF_fourStreams } HUF_nbStreams_e;
@@ -750,35 +1160,38 @@ static size_t HUF_compressCTable_internal(
typedef struct {
unsigned count[HUF_SYMBOLVALUE_MAX + 1];
HUF_CElt CTable[HUF_SYMBOLVALUE_MAX + 1];
HUF_CElt CTable[HUF_CTABLE_SIZE_ST(HUF_SYMBOLVALUE_MAX)];
union {
HUF_buildCTable_wksp_tables buildCTable_wksp;
HUF_WriteCTableWksp writeCTable_wksp;
U32 hist_wksp[HIST_WKSP_SIZE_U32];
} wksps;
} HUF_compress_tables_t;
#define SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE 4096
#define SUSPECT_INCOMPRESSIBLE_SAMPLE_RATIO 10 /* Must be >= 2 */
/* HUF_compress_internal() :
* `workSpace_align4` must be aligned on 4-bytes boundaries,
* and occupies the same space as a table of HUF_WORKSPACE_SIZE_U32 unsigned */
* and occupies the same space as a table of HUF_WORKSPACE_SIZE_U64 unsigned */
static size_t
HUF_compress_internal (void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned huffLog,
HUF_nbStreams_e nbStreams,
void* workSpace_align4, size_t wkspSize,
void* workSpace, size_t wkspSize,
HUF_CElt* oldHufTable, HUF_repeat* repeat, int preferRepeat,
const int bmi2)
const int bmi2, unsigned suspectUncompressible)
{
HUF_compress_tables_t* const table = (HUF_compress_tables_t*)workSpace_align4;
HUF_compress_tables_t* const table = (HUF_compress_tables_t*)HUF_alignUpWorkspace(workSpace, &wkspSize, ZSTD_ALIGNOF(size_t));
BYTE* const ostart = (BYTE*)dst;
BYTE* const oend = ostart + dstSize;
BYTE* op = ostart;
HUF_STATIC_ASSERT(sizeof(*table) <= HUF_WORKSPACE_SIZE);
assert(((size_t)workSpace_align4 & 3) == 0); /* must be aligned on 4-bytes boundaries */
HUF_STATIC_ASSERT(sizeof(*table) + HUF_WORKSPACE_MAX_ALIGNMENT <= HUF_WORKSPACE_SIZE);
/* checks & inits */
if (wkspSize < HUF_WORKSPACE_SIZE) return ERROR(workSpace_tooSmall);
if (wkspSize < sizeof(*table)) return ERROR(workSpace_tooSmall);
if (!srcSize) return 0; /* Uncompressed */
if (!dstSize) return 0; /* cannot fit anything within dst budget */
if (srcSize > HUF_BLOCKSIZE_MAX) return ERROR(srcSize_wrong); /* current block size limit */
@@ -794,8 +1207,23 @@ HUF_compress_internal (void* dst, size_t dstSize,
nbStreams, oldHufTable, bmi2);
}
/* If uncompressible data is suspected, do a smaller sampling first */
DEBUG_STATIC_ASSERT(SUSPECT_INCOMPRESSIBLE_SAMPLE_RATIO >= 2);
if (suspectUncompressible && srcSize >= (SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE * SUSPECT_INCOMPRESSIBLE_SAMPLE_RATIO)) {
size_t largestTotal = 0;
{ unsigned maxSymbolValueBegin = maxSymbolValue;
CHECK_V_F(largestBegin, HIST_count_simple (table->count, &maxSymbolValueBegin, (const BYTE*)src, SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE) );
largestTotal += largestBegin;
}
{ unsigned maxSymbolValueEnd = maxSymbolValue;
CHECK_V_F(largestEnd, HIST_count_simple (table->count, &maxSymbolValueEnd, (const BYTE*)src + srcSize - SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE, SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE) );
largestTotal += largestEnd;
}
if (largestTotal <= ((2 * SUSPECT_INCOMPRESSIBLE_SAMPLE_SIZE) >> 7)+4) return 0; /* heuristic : probably not compressible enough */
}
/* Scan input and build symbol stats */
{ CHECK_V_F(largest, HIST_count_wksp (table->count, &maxSymbolValue, (const BYTE*)src, srcSize, workSpace_align4, wkspSize) );
{ CHECK_V_F(largest, HIST_count_wksp (table->count, &maxSymbolValue, (const BYTE*)src, srcSize, table->wksps.hist_wksp, sizeof(table->wksps.hist_wksp)) );
if (largest == srcSize) { *ostart = ((const BYTE*)src)[0]; return 1; } /* single symbol, rle */
if (largest <= (srcSize >> 7)+4) return 0; /* heuristic : probably not compressible enough */
}
@@ -820,9 +1248,12 @@ HUF_compress_internal (void* dst, size_t dstSize,
&table->wksps.buildCTable_wksp, sizeof(table->wksps.buildCTable_wksp));
CHECK_F(maxBits);
huffLog = (U32)maxBits;
/* Zero unused symbols in CTable, so we can check it for validity */
ZSTD_memset(table->CTable + (maxSymbolValue + 1), 0,
sizeof(table->CTable) - ((maxSymbolValue + 1) * sizeof(HUF_CElt)));
}
/* Zero unused symbols in CTable, so we can check it for validity */
{
size_t const ctableSize = HUF_CTABLE_SIZE_ST(maxSymbolValue);
size_t const unusedSize = sizeof(table->CTable) - ctableSize * sizeof(HUF_CElt);
ZSTD_memset(table->CTable + ctableSize, 0, unusedSize);
}
/* Write table description header */
@@ -859,19 +1290,20 @@ size_t HUF_compress1X_wksp (void* dst, size_t dstSize,
return HUF_compress_internal(dst, dstSize, src, srcSize,
maxSymbolValue, huffLog, HUF_singleStream,
workSpace, wkspSize,
NULL, NULL, 0, 0 /*bmi2*/);
NULL, NULL, 0, 0 /*bmi2*/, 0);
}
size_t HUF_compress1X_repeat (void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned huffLog,
void* workSpace, size_t wkspSize,
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2)
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat,
int bmi2, unsigned suspectUncompressible)
{
return HUF_compress_internal(dst, dstSize, src, srcSize,
maxSymbolValue, huffLog, HUF_singleStream,
workSpace, wkspSize, hufTable,
repeat, preferRepeat, bmi2);
repeat, preferRepeat, bmi2, suspectUncompressible);
}
/* HUF_compress4X_repeat():
@@ -885,22 +1317,23 @@ size_t HUF_compress4X_wksp (void* dst, size_t dstSize,
return HUF_compress_internal(dst, dstSize, src, srcSize,
maxSymbolValue, huffLog, HUF_fourStreams,
workSpace, wkspSize,
NULL, NULL, 0, 0 /*bmi2*/);
NULL, NULL, 0, 0 /*bmi2*/, 0);
}
/* HUF_compress4X_repeat():
* compress input using 4 streams.
* consider skipping quickly
* re-use an existing huffman compression table */
size_t HUF_compress4X_repeat (void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned huffLog,
void* workSpace, size_t wkspSize,
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2)
HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2, unsigned suspectUncompressible)
{
return HUF_compress_internal(dst, dstSize, src, srcSize,
maxSymbolValue, huffLog, HUF_fourStreams,
workSpace, wkspSize,
hufTable, repeat, preferRepeat, bmi2);
hufTable, repeat, preferRepeat, bmi2, suspectUncompressible);
}
#ifndef ZSTD_NO_UNUSED_FUNCTIONS
@@ -918,7 +1351,7 @@ size_t HUF_compress1X (void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned huffLog)
{
unsigned workSpace[HUF_WORKSPACE_SIZE_U32];
U64 workSpace[HUF_WORKSPACE_SIZE_U64];
return HUF_compress1X_wksp(dst, dstSize, src, srcSize, maxSymbolValue, huffLog, workSpace, sizeof(workSpace));
}
@@ -926,7 +1359,7 @@ size_t HUF_compress2 (void* dst, size_t dstSize,
const void* src, size_t srcSize,
unsigned maxSymbolValue, unsigned huffLog)
{
unsigned workSpace[HUF_WORKSPACE_SIZE_U32];
U64 workSpace[HUF_WORKSPACE_SIZE_U64];
return HUF_compress4X_wksp(dst, dstSize, src, srcSize, maxSymbolValue, huffLog, workSpace, sizeof(workSpace));
}
lib/compress/zstd_compress.c
+194 -278
View File
@@ -12,7 +12,6 @@
* Dependencies
***************************************/
#include "../common/zstd_deps.h" /* INT_MAX, ZSTD_memset, ZSTD_memcpy */
#include "../common/cpu.h"
#include "../common/mem.h"
#include "hist.h" /* HIST_countFast_wksp */
#define FSE_STATIC_LINKING_ONLY /* FSE_encodeSymbol */
@@ -42,6 +41,18 @@
# define ZSTD_COMPRESS_HEAPMODE 0
#endif
/*!
* ZSTD_HASHLOG3_MAX :
* Maximum size of the hash table dedicated to find 3-bytes matches,
* in log format, aka 17 => 1 << 17 == 128Ki positions.
* This structure is only used in zstd_opt.
* Since allocation is centralized for all strategies, it has to be known here.
* The actual (selected) size of the hash table is then stored in ZSTD_matchState_t.hashLog3,
* so that zstd_opt.c doesn't need to know about this constant.
*/
#ifndef ZSTD_HASHLOG3_MAX
# define ZSTD_HASHLOG3_MAX 17
#endif
/*-*************************************
* Helper functions
@@ -72,10 +83,10 @@ struct ZSTD_CDict_s {
ZSTD_customMem customMem;
U32 dictID;
int compressionLevel; /* 0 indicates that advanced API was used to select CDict params */
ZSTD_useRowMatchFinderMode_e useRowMatchFinder; /* Indicates whether the CDict was created with params that would use
* row-based matchfinder. Unless the cdict is reloaded, we will use
* the same greedy/lazy matchfinder at compression time.
*/
ZSTD_paramSwitch_e useRowMatchFinder; /* Indicates whether the CDict was created with params that would use
* row-based matchfinder. Unless the cdict is reloaded, we will use
* the same greedy/lazy matchfinder at compression time.
*/
}; /* typedef'd to ZSTD_CDict within "zstd.h" */
ZSTD_CCtx* ZSTD_createCCtx(void)
@@ -88,7 +99,7 @@ static void ZSTD_initCCtx(ZSTD_CCtx* cctx, ZSTD_customMem memManager)
assert(cctx != NULL);
ZSTD_memset(cctx, 0, sizeof(*cctx));
cctx->customMem = memManager;
cctx->bmi2 = ZSTD_cpuid_bmi2(ZSTD_cpuid());
cctx->bmi2 = ZSTD_cpuSupportsBmi2();
{ size_t const err = ZSTD_CCtx_reset(cctx, ZSTD_reset_parameters);
assert(!ZSTD_isError(err));
(void)err;
@@ -214,35 +225,42 @@ static int ZSTD_rowMatchFinderSupported(const ZSTD_strategy strategy) {
/* Returns true if the strategy and useRowMatchFinder mode indicate that we will use the row based matchfinder
* for this compression.
*/
static int ZSTD_rowMatchFinderUsed(const ZSTD_strategy strategy, const ZSTD_useRowMatchFinderMode_e mode) {
assert(mode != ZSTD_urm_auto);
return ZSTD_rowMatchFinderSupported(strategy) && (mode == ZSTD_urm_enableRowMatchFinder);
static int ZSTD_rowMatchFinderUsed(const ZSTD_strategy strategy, const ZSTD_paramSwitch_e mode) {
assert(mode != ZSTD_ps_auto);
return ZSTD_rowMatchFinderSupported(strategy) && (mode == ZSTD_ps_enable);
}
/* Returns row matchfinder usage enum given an initial mode and cParams */
static ZSTD_useRowMatchFinderMode_e ZSTD_resolveRowMatchFinderMode(ZSTD_useRowMatchFinderMode_e mode,
const ZSTD_compressionParameters* const cParams) {
#if !defined(ZSTD_NO_INTRINSICS) && (defined(__SSE2__) || defined(__ARM_NEON))
/* Returns row matchfinder usage given an initial mode and cParams */
static ZSTD_paramSwitch_e ZSTD_resolveRowMatchFinderMode(ZSTD_paramSwitch_e mode,
const ZSTD_compressionParameters* const cParams) {
#if defined(ZSTD_ARCH_X86_SSE2) || defined(ZSTD_ARCH_ARM_NEON)
int const kHasSIMD128 = 1;
#else
int const kHasSIMD128 = 0;
#endif
if (mode != ZSTD_urm_auto) return mode; /* if requested enabled, but no SIMD, we still will use row matchfinder */
mode = ZSTD_urm_disableRowMatchFinder;
if (mode != ZSTD_ps_auto) return mode; /* if requested enabled, but no SIMD, we still will use row matchfinder */
mode = ZSTD_ps_disable;
if (!ZSTD_rowMatchFinderSupported(cParams->strategy)) return mode;
if (kHasSIMD128) {
if (cParams->windowLog > 14) mode = ZSTD_urm_enableRowMatchFinder;
if (cParams->windowLog > 14) mode = ZSTD_ps_enable;
} else {
if (cParams->windowLog > 17) mode = ZSTD_urm_enableRowMatchFinder;
if (cParams->windowLog > 17) mode = ZSTD_ps_enable;
}
return mode;
}
/* Returns block splitter usage (generally speaking, when using slower/stronger compression modes) */
static ZSTD_paramSwitch_e ZSTD_resolveBlockSplitterMode(ZSTD_paramSwitch_e mode,
const ZSTD_compressionParameters* const cParams) {
if (mode != ZSTD_ps_auto) return mode;
return (cParams->strategy >= ZSTD_btopt && cParams->windowLog >= 17) ? ZSTD_ps_enable : ZSTD_ps_disable;
}
/* Returns 1 if the arguments indicate that we should allocate a chainTable, 0 otherwise */
static int ZSTD_allocateChainTable(const ZSTD_strategy strategy,
const ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
const ZSTD_paramSwitch_e useRowMatchFinder,
const U32 forDDSDict) {
assert(useRowMatchFinder != ZSTD_urm_auto);
assert(useRowMatchFinder != ZSTD_ps_auto);
/* We always should allocate a chaintable if we are allocating a matchstate for a DDS dictionary matchstate.
* We do not allocate a chaintable if we are using ZSTD_fast, or are using the row-based matchfinder.
*/
@@ -253,16 +271,10 @@ static int ZSTD_allocateChainTable(const ZSTD_strategy strategy,
* enable long distance matching (wlog >= 27, strategy >= btopt).
* Returns 0 otherwise.
*/
static U32 ZSTD_CParams_shouldEnableLdm(const ZSTD_compressionParameters* const cParams) {
return cParams->strategy >= ZSTD_btopt && cParams->windowLog >= 27;
}
/* Returns 1 if compression parameters are such that we should
* enable blockSplitter (wlog >= 17, strategy >= btopt).
* Returns 0 otherwise.
*/
static U32 ZSTD_CParams_useBlockSplitter(const ZSTD_compressionParameters* const cParams) {
return cParams->strategy >= ZSTD_btopt && cParams->windowLog >= 17;
static ZSTD_paramSwitch_e ZSTD_resolveEnableLdm(ZSTD_paramSwitch_e mode,
const ZSTD_compressionParameters* const cParams) {
if (mode != ZSTD_ps_auto) return mode;
return (cParams->strategy >= ZSTD_btopt && cParams->windowLog >= 27) ? ZSTD_ps_enable : ZSTD_ps_disable;
}
static ZSTD_CCtx_params ZSTD_makeCCtxParamsFromCParams(
@@ -274,20 +286,13 @@ static ZSTD_CCtx_params ZSTD_makeCCtxParamsFromCParams(
cctxParams.cParams = cParams;
/* Adjust advanced params according to cParams */
if (ZSTD_CParams_shouldEnableLdm(&cParams)) {
DEBUGLOG(4, "ZSTD_makeCCtxParamsFromCParams(): Including LDM into cctx params");
cctxParams.ldmParams.enableLdm = 1;
/* LDM is enabled by default for optimal parser and window size >= 128MB */
cctxParams.ldmParams.enableLdm = ZSTD_resolveEnableLdm(cctxParams.ldmParams.enableLdm, &cParams);
if (cctxParams.ldmParams.enableLdm == ZSTD_ps_enable) {
ZSTD_ldm_adjustParameters(&cctxParams.ldmParams, &cParams);
assert(cctxParams.ldmParams.hashLog >= cctxParams.ldmParams.bucketSizeLog);
assert(cctxParams.ldmParams.hashRateLog < 32);
}
if (ZSTD_CParams_useBlockSplitter(&cParams)) {
DEBUGLOG(4, "ZSTD_makeCCtxParamsFromCParams(): Including block splitting into cctx params");
cctxParams.splitBlocks = 1;
}
cctxParams.useBlockSplitter = ZSTD_resolveBlockSplitterMode(cctxParams.useBlockSplitter, &cParams);
cctxParams.useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(cctxParams.useRowMatchFinder, &cParams);
assert(!ZSTD_checkCParams(cParams));
return cctxParams;
@@ -348,7 +353,10 @@ static void ZSTD_CCtxParams_init_internal(ZSTD_CCtx_params* cctxParams, ZSTD_par
*/
cctxParams->compressionLevel = compressionLevel;
cctxParams->useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(cctxParams->useRowMatchFinder, &params->cParams);
DEBUGLOG(4, "ZSTD_CCtxParams_init_internal: useRowMatchFinder=%d", cctxParams->useRowMatchFinder);
cctxParams->useBlockSplitter = ZSTD_resolveBlockSplitterMode(cctxParams->useBlockSplitter, &params->cParams);
cctxParams->ldmParams.enableLdm = ZSTD_resolveEnableLdm(cctxParams->ldmParams.enableLdm, &params->cParams);
DEBUGLOG(4, "ZSTD_CCtxParams_init_internal: useRowMatchFinder=%d, useBlockSplitter=%d ldm=%d",
cctxParams->useRowMatchFinder, cctxParams->useBlockSplitter, cctxParams->ldmParams.enableLdm);
}
size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params)
@@ -518,9 +526,9 @@ ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter param)
return bounds;
case ZSTD_c_literalCompressionMode:
ZSTD_STATIC_ASSERT(ZSTD_lcm_auto < ZSTD_lcm_huffman && ZSTD_lcm_huffman < ZSTD_lcm_uncompressed);
bounds.lowerBound = ZSTD_lcm_auto;
bounds.upperBound = ZSTD_lcm_uncompressed;
ZSTD_STATIC_ASSERT(ZSTD_ps_auto < ZSTD_ps_enable && ZSTD_ps_enable < ZSTD_ps_disable);
bounds.lowerBound = (int)ZSTD_ps_auto;
bounds.upperBound = (int)ZSTD_ps_disable;
return bounds;
case ZSTD_c_targetCBlockSize:
@@ -549,14 +557,14 @@ ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter param)
bounds.upperBound = 1;
return bounds;
case ZSTD_c_splitBlocks:
bounds.lowerBound = 0;
bounds.upperBound = 1;
case ZSTD_c_useBlockSplitter:
bounds.lowerBound = (int)ZSTD_ps_auto;
bounds.upperBound = (int)ZSTD_ps_disable;
return bounds;
case ZSTD_c_useRowMatchFinder:
bounds.lowerBound = (int)ZSTD_urm_auto;
bounds.upperBound = (int)ZSTD_urm_enableRowMatchFinder;
bounds.lowerBound = (int)ZSTD_ps_auto;
bounds.upperBound = (int)ZSTD_ps_disable;
return bounds;
case ZSTD_c_deterministicRefPrefix:
@@ -625,7 +633,7 @@ static int ZSTD_isUpdateAuthorized(ZSTD_cParameter param)
case ZSTD_c_stableOutBuffer:
case ZSTD_c_blockDelimiters:
case ZSTD_c_validateSequences:
case ZSTD_c_splitBlocks:
case ZSTD_c_useBlockSplitter:
case ZSTD_c_useRowMatchFinder:
case ZSTD_c_deterministicRefPrefix:
default:
@@ -680,7 +688,7 @@ size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, int value)
case ZSTD_c_stableOutBuffer:
case ZSTD_c_blockDelimiters:
case ZSTD_c_validateSequences:
case ZSTD_c_splitBlocks:
case ZSTD_c_useBlockSplitter:
case ZSTD_c_useRowMatchFinder:
case ZSTD_c_deterministicRefPrefix:
break;
@@ -780,7 +788,7 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
}
case ZSTD_c_literalCompressionMode : {
const ZSTD_literalCompressionMode_e lcm = (ZSTD_literalCompressionMode_e)value;
const ZSTD_paramSwitch_e lcm = (ZSTD_paramSwitch_e)value;
BOUNDCHECK(ZSTD_c_literalCompressionMode, lcm);
CCtxParams->literalCompressionMode = lcm;
return CCtxParams->literalCompressionMode;
@@ -835,7 +843,7 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
return CCtxParams->enableDedicatedDictSearch;
case ZSTD_c_enableLongDistanceMatching :
CCtxParams->ldmParams.enableLdm = (value!=0);
CCtxParams->ldmParams.enableLdm = (ZSTD_paramSwitch_e)value;
return CCtxParams->ldmParams.enableLdm;
case ZSTD_c_ldmHashLog :
@@ -857,8 +865,8 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
return CCtxParams->ldmParams.bucketSizeLog;
case ZSTD_c_ldmHashRateLog :
RETURN_ERROR_IF(value > ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN,
parameter_outOfBound, "Param out of bounds!");
if (value!=0) /* 0 ==> default */
BOUNDCHECK(ZSTD_c_ldmHashRateLog, value);
CCtxParams->ldmParams.hashRateLog = value;
return CCtxParams->ldmParams.hashRateLog;
@@ -894,14 +902,14 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
CCtxParams->validateSequences = value;
return CCtxParams->validateSequences;
case ZSTD_c_splitBlocks:
BOUNDCHECK(ZSTD_c_splitBlocks, value);
CCtxParams->splitBlocks = value;
return CCtxParams->splitBlocks;
case ZSTD_c_useBlockSplitter:
BOUNDCHECK(ZSTD_c_useBlockSplitter, value);
CCtxParams->useBlockSplitter = (ZSTD_paramSwitch_e)value;
return CCtxParams->useBlockSplitter;
case ZSTD_c_useRowMatchFinder:
BOUNDCHECK(ZSTD_c_useRowMatchFinder, value);
CCtxParams->useRowMatchFinder = (ZSTD_useRowMatchFinderMode_e)value;
CCtxParams->useRowMatchFinder = (ZSTD_paramSwitch_e)value;
return CCtxParams->useRowMatchFinder;
case ZSTD_c_deterministicRefPrefix:
@@ -1032,8 +1040,8 @@ size_t ZSTD_CCtxParams_getParameter(
case ZSTD_c_validateSequences :
*value = (int)CCtxParams->validateSequences;
break;
case ZSTD_c_splitBlocks :
*value = (int)CCtxParams->splitBlocks;
case ZSTD_c_useBlockSplitter :
*value = (int)CCtxParams->useBlockSplitter;
break;
case ZSTD_c_useRowMatchFinder :
*value = (int)CCtxParams->useRowMatchFinder;
@@ -1067,7 +1075,7 @@ size_t ZSTD_CCtx_setParametersUsingCCtxParams(
return 0;
}
ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long long pledgedSrcSize)
size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long long pledgedSrcSize)
{
DEBUGLOG(4, "ZSTD_CCtx_setPledgedSrcSize to %u bytes", (U32)pledgedSrcSize);
RETURN_ERROR_IF(cctx->streamStage != zcss_init, stage_wrong,
@@ -1147,14 +1155,14 @@ size_t ZSTD_CCtx_loadDictionary_advanced(
return 0;
}
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_byReference(
size_t ZSTD_CCtx_loadDictionary_byReference(
ZSTD_CCtx* cctx, const void* dict, size_t dictSize)
{
return ZSTD_CCtx_loadDictionary_advanced(
cctx, dict, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto);
}
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize)
size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize)
{
return ZSTD_CCtx_loadDictionary_advanced(
cctx, dict, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto);
@@ -1324,7 +1332,7 @@ ZSTD_adjustCParams_internal(ZSTD_compressionParameters cPar,
break;
case ZSTD_cpm_createCDict:
/* Assume a small source size when creating a dictionary
* with an unkown source size.
* with an unknown source size.
*/
if (dictSize && srcSize == ZSTD_CONTENTSIZE_UNKNOWN)
srcSize = minSrcSize;
@@ -1398,7 +1406,7 @@ ZSTD_compressionParameters ZSTD_getCParamsFromCCtxParams(
srcSizeHint = CCtxParams->srcSizeHint;
}
cParams = ZSTD_getCParams_internal(CCtxParams->compressionLevel, srcSizeHint, dictSize, mode);
if (CCtxParams->ldmParams.enableLdm) cParams.windowLog = ZSTD_LDM_DEFAULT_WINDOW_LOG;
if (CCtxParams->ldmParams.enableLdm == ZSTD_ps_enable) cParams.windowLog = ZSTD_LDM_DEFAULT_WINDOW_LOG;
ZSTD_overrideCParams(&cParams, &CCtxParams->cParams);
assert(!ZSTD_checkCParams(cParams));
/* srcSizeHint == 0 means 0 */
@@ -1407,7 +1415,7 @@ ZSTD_compressionParameters ZSTD_getCParamsFromCCtxParams(
static size_t
ZSTD_sizeof_matchState(const ZSTD_compressionParameters* const cParams,
const ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
const ZSTD_paramSwitch_e useRowMatchFinder,
const U32 enableDedicatedDictSearch,
const U32 forCCtx)
{
@@ -1440,7 +1448,7 @@ ZSTD_sizeof_matchState(const ZSTD_compressionParameters* const cParams,
/* tables are guaranteed to be sized in multiples of 64 bytes (or 16 uint32_t) */
ZSTD_STATIC_ASSERT(ZSTD_HASHLOG_MIN >= 4 && ZSTD_WINDOWLOG_MIN >= 4 && ZSTD_CHAINLOG_MIN >= 4);
assert(useRowMatchFinder != ZSTD_urm_auto);
assert(useRowMatchFinder != ZSTD_ps_auto);
DEBUGLOG(4, "chainSize: %u - hSize: %u - h3Size: %u",
(U32)chainSize, (U32)hSize, (U32)h3Size);
@@ -1451,12 +1459,12 @@ static size_t ZSTD_estimateCCtxSize_usingCCtxParams_internal(
const ZSTD_compressionParameters* cParams,
const ldmParams_t* ldmParams,
const int isStatic,
const ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
const ZSTD_paramSwitch_e useRowMatchFinder,
const size_t buffInSize,
const size_t buffOutSize,
const U64 pledgedSrcSize)
{
size_t const windowSize = MAX(1, (size_t)MIN(((U64)1 << cParams->windowLog), pledgedSrcSize));
size_t const windowSize = (size_t) BOUNDED(1ULL, 1ULL << cParams->windowLog, pledgedSrcSize);
size_t const blockSize = MIN(ZSTD_BLOCKSIZE_MAX, windowSize);
U32 const divider = (cParams->minMatch==3) ? 3 : 4;
size_t const maxNbSeq = blockSize / divider;
@@ -1469,7 +1477,7 @@ static size_t ZSTD_estimateCCtxSize_usingCCtxParams_internal(
size_t const ldmSpace = ZSTD_ldm_getTableSize(*ldmParams);
size_t const maxNbLdmSeq = ZSTD_ldm_getMaxNbSeq(*ldmParams, blockSize);
size_t const ldmSeqSpace = ldmParams->enableLdm ?
size_t const ldmSeqSpace = ldmParams->enableLdm == ZSTD_ps_enable ?
ZSTD_cwksp_aligned_alloc_size(maxNbLdmSeq * sizeof(rawSeq)) : 0;
@@ -1496,8 +1504,8 @@ size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params)
{
ZSTD_compressionParameters const cParams =
ZSTD_getCParamsFromCCtxParams(params, ZSTD_CONTENTSIZE_UNKNOWN, 0, ZSTD_cpm_noAttachDict);
ZSTD_useRowMatchFinderMode_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(params->useRowMatchFinder,
&cParams);
ZSTD_paramSwitch_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(params->useRowMatchFinder,
&cParams);
RETURN_ERROR_IF(params->nbWorkers > 0, GENERIC, "Estimate CCtx size is supported for single-threaded compression only.");
/* estimateCCtxSize is for one-shot compression. So no buffers should
@@ -1514,9 +1522,9 @@ size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams)
/* Pick bigger of not using and using row-based matchfinder for greedy and lazy strategies */
size_t noRowCCtxSize;
size_t rowCCtxSize;
initialParams.useRowMatchFinder = ZSTD_urm_disableRowMatchFinder;
initialParams.useRowMatchFinder = ZSTD_ps_disable;
noRowCCtxSize = ZSTD_estimateCCtxSize_usingCCtxParams(&initialParams);
initialParams.useRowMatchFinder = ZSTD_urm_enableRowMatchFinder;
initialParams.useRowMatchFinder = ZSTD_ps_enable;
rowCCtxSize = ZSTD_estimateCCtxSize_usingCCtxParams(&initialParams);
return MAX(noRowCCtxSize, rowCCtxSize);
} else {
@@ -1561,7 +1569,7 @@ size_t ZSTD_estimateCStreamSize_usingCCtxParams(const ZSTD_CCtx_params* params)
size_t const outBuffSize = (params->outBufferMode == ZSTD_bm_buffered)
? ZSTD_compressBound(blockSize) + 1
: 0;
ZSTD_useRowMatchFinderMode_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(params->useRowMatchFinder, &params->cParams);
ZSTD_paramSwitch_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(params->useRowMatchFinder, &params->cParams);
return ZSTD_estimateCCtxSize_usingCCtxParams_internal(
&cParams, &params->ldmParams, 1, useRowMatchFinder, inBuffSize, outBuffSize,
@@ -1576,9 +1584,9 @@ size_t ZSTD_estimateCStreamSize_usingCParams(ZSTD_compressionParameters cParams)
/* Pick bigger of not using and using row-based matchfinder for greedy and lazy strategies */
size_t noRowCCtxSize;
size_t rowCCtxSize;
initialParams.useRowMatchFinder = ZSTD_urm_disableRowMatchFinder;
initialParams.useRowMatchFinder = ZSTD_ps_disable;
noRowCCtxSize = ZSTD_estimateCStreamSize_usingCCtxParams(&initialParams);
initialParams.useRowMatchFinder = ZSTD_urm_enableRowMatchFinder;
initialParams.useRowMatchFinder = ZSTD_ps_enable;
rowCCtxSize = ZSTD_estimateCStreamSize_usingCCtxParams(&initialParams);
return MAX(noRowCCtxSize, rowCCtxSize);
} else {
@@ -1713,7 +1721,7 @@ static size_t
ZSTD_reset_matchState(ZSTD_matchState_t* ms,
ZSTD_cwksp* ws,
const ZSTD_compressionParameters* cParams,
const ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
const ZSTD_paramSwitch_e useRowMatchFinder,
const ZSTD_compResetPolicy_e crp,
const ZSTD_indexResetPolicy_e forceResetIndex,
const ZSTD_resetTarget_e forWho)
@@ -1728,7 +1736,7 @@ ZSTD_reset_matchState(ZSTD_matchState_t* ms,
size_t const h3Size = hashLog3 ? ((size_t)1) << hashLog3 : 0;
DEBUGLOG(4, "reset indices : %u", forceResetIndex == ZSTDirp_reset);
assert(useRowMatchFinder != ZSTD_urm_auto);
assert(useRowMatchFinder != ZSTD_ps_auto);
if (forceResetIndex == ZSTDirp_reset) {
ZSTD_window_init(&ms->window);
ZSTD_cwksp_mark_tables_dirty(ws);
@@ -1774,8 +1782,8 @@ ZSTD_reset_matchState(ZSTD_matchState_t* ms,
if (ms->tagTable) ZSTD_memset(ms->tagTable, 0, tagTableSize);
}
{ /* Switch to 32-entry rows if searchLog is 5 (or more) */
U32 const rowLog = cParams->searchLog < 5 ? 4 : 5;
assert(cParams->hashLog > rowLog);
U32 const rowLog = BOUNDED(4, cParams->searchLog, 6);
assert(cParams->hashLog >= rowLog);
ms->rowHashLog = cParams->hashLog - rowLog;
}
}
@@ -1824,8 +1832,8 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
ZSTD_buffered_policy_e const zbuff)
{
ZSTD_cwksp* const ws = &zc->workspace;
DEBUGLOG(4, "ZSTD_resetCCtx_internal: pledgedSrcSize=%u, wlog=%u, useRowMatchFinder=%d",
(U32)pledgedSrcSize, params->cParams.windowLog, (int)params->useRowMatchFinder);
DEBUGLOG(4, "ZSTD_resetCCtx_internal: pledgedSrcSize=%u, wlog=%u, useRowMatchFinder=%d useBlockSplitter=%d",
(U32)pledgedSrcSize, params->cParams.windowLog, (int)params->useRowMatchFinder, (int)params->useBlockSplitter);
assert(!ZSTD_isError(ZSTD_checkCParams(params->cParams)));
zc->isFirstBlock = 1;
@@ -1836,8 +1844,10 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
zc->appliedParams = *params;
params = &zc->appliedParams;
assert(params->useRowMatchFinder != ZSTD_urm_auto);
if (params->ldmParams.enableLdm) {
assert(params->useRowMatchFinder != ZSTD_ps_auto);
assert(params->useBlockSplitter != ZSTD_ps_auto);
assert(params->ldmParams.enableLdm != ZSTD_ps_auto);
if (params->ldmParams.enableLdm == ZSTD_ps_enable) {
/* Adjust long distance matching parameters */
ZSTD_ldm_adjustParameters(&zc->appliedParams.ldmParams, &params->cParams);
assert(params->ldmParams.hashLog >= params->ldmParams.bucketSizeLog);
@@ -1900,7 +1910,7 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
zc->blockState.nextCBlock = (ZSTD_compressedBlockState_t*) ZSTD_cwksp_reserve_object(ws, sizeof(ZSTD_compressedBlockState_t));
RETURN_ERROR_IF(zc->blockState.nextCBlock == NULL, memory_allocation, "couldn't allocate nextCBlock");
zc->entropyWorkspace = (U32*) ZSTD_cwksp_reserve_object(ws, ENTROPY_WORKSPACE_SIZE);
RETURN_ERROR_IF(zc->blockState.nextCBlock == NULL, memory_allocation, "couldn't allocate entropyWorkspace");
RETURN_ERROR_IF(zc->entropyWorkspace == NULL, memory_allocation, "couldn't allocate entropyWorkspace");
} }
ZSTD_cwksp_clear(ws);
@@ -1937,7 +1947,7 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
zc->outBuff = (char*)ZSTD_cwksp_reserve_buffer(ws, buffOutSize);
/* ldm bucketOffsets table */
if (params->ldmParams.enableLdm) {
if (params->ldmParams.enableLdm == ZSTD_ps_enable) {
/* TODO: avoid memset? */
size_t const numBuckets =
((size_t)1) << (params->ldmParams.hashLog -
@@ -1964,7 +1974,7 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
ZSTD_resetTarget_CCtx), "");
/* ldm hash table */
if (params->ldmParams.enableLdm) {
if (params->ldmParams.enableLdm == ZSTD_ps_enable) {
/* TODO: avoid memset? */
size_t const ldmHSize = ((size_t)1) << params->ldmParams.hashLog;
zc->ldmState.hashTable = (ldmEntry_t*)ZSTD_cwksp_reserve_aligned(ws, ldmHSize * sizeof(ldmEntry_t));
@@ -1976,8 +1986,8 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
zc->ldmState.loadedDictEnd = 0;
}
assert(ZSTD_cwksp_estimated_space_within_bounds(ws, neededSpace, resizeWorkspace));
DEBUGLOG(3, "wksp: finished allocating, %zd bytes remain available", ZSTD_cwksp_available_space(ws));
assert(ZSTD_cwksp_estimated_space_within_bounds(ws, neededSpace, resizeWorkspace));
zc->initialized = 1;
@@ -2115,7 +2125,7 @@ static size_t ZSTD_resetCCtx_byCopyingCDict(ZSTD_CCtx* cctx,
}
ZSTD_cwksp_mark_tables_dirty(&cctx->workspace);
assert(params.useRowMatchFinder != ZSTD_urm_auto);
assert(params.useRowMatchFinder != ZSTD_ps_auto);
/* copy tables */
{ size_t const chainSize = ZSTD_allocateChainTable(cdict_cParams->strategy, cdict->useRowMatchFinder, 0 /* DDS guaranteed disabled */)
@@ -2209,8 +2219,12 @@ static size_t ZSTD_copyCCtx_internal(ZSTD_CCtx* dstCCtx,
{ ZSTD_CCtx_params params = dstCCtx->requestedParams;
/* Copy only compression parameters related to tables. */
params.cParams = srcCCtx->appliedParams.cParams;
assert(srcCCtx->appliedParams.useRowMatchFinder != ZSTD_urm_auto);
assert(srcCCtx->appliedParams.useRowMatchFinder != ZSTD_ps_auto);
assert(srcCCtx->appliedParams.useBlockSplitter != ZSTD_ps_auto);
assert(srcCCtx->appliedParams.ldmParams.enableLdm != ZSTD_ps_auto);
params.useRowMatchFinder = srcCCtx->appliedParams.useRowMatchFinder;
params.useBlockSplitter = srcCCtx->appliedParams.useBlockSplitter;
params.ldmParams = srcCCtx->appliedParams.ldmParams;
params.fParams = fParams;
ZSTD_resetCCtx_internal(dstCCtx, &params, pledgedSrcSize,
/* loadedDictSize */ 0,
@@ -2296,6 +2310,8 @@ ZSTD_reduceTable_internal (U32* const table, U32 const size, U32 const reducerVa
int const nbRows = (int)size / ZSTD_ROWSIZE;
int cellNb = 0;
int rowNb;
/* Protect special index values < ZSTD_WINDOW_START_INDEX. */
U32 const reducerThreshold = reducerValue + ZSTD_WINDOW_START_INDEX;
assert((size & (ZSTD_ROWSIZE-1)) == 0); /* multiple of ZSTD_ROWSIZE */
assert(size < (1U<<31)); /* can be casted to int */
@@ -2315,12 +2331,17 @@ ZSTD_reduceTable_internal (U32* const table, U32 const size, U32 const reducerVa
for (rowNb=0 ; rowNb < nbRows ; rowNb++) {
int column;
for (column=0; column<ZSTD_ROWSIZE; column++) {
if (preserveMark) {
U32 const adder = (table[cellNb] == ZSTD_DUBT_UNSORTED_MARK) ? reducerValue : 0;
table[cellNb] += adder;
U32 newVal;
if (preserveMark && table[cellNb] == ZSTD_DUBT_UNSORTED_MARK) {
/* This write is pointless, but is required(?) for the compiler
* to auto-vectorize the loop. */
newVal = ZSTD_DUBT_UNSORTED_MARK;
} else if (table[cellNb] < reducerThreshold) {
newVal = 0;
} else {
newVal = table[cellNb] - reducerValue;
}
if (table[cellNb] < reducerValue) table[cellNb] = 0;
else table[cellNb] -= reducerValue;
table[cellNb] = newVal;
cellNb++;
} }
}
@@ -2399,11 +2420,13 @@ static int ZSTD_useTargetCBlockSize(const ZSTD_CCtx_params* cctxParams)
/* ZSTD_blockSplitterEnabled():
* Returns if block splitting param is being used
* If used, compression will do best effort to split a block in order to improve compression ratio.
* At the time this function is called, the parameter must be finalized.
* Returns 1 if true, 0 otherwise. */
static int ZSTD_blockSplitterEnabled(ZSTD_CCtx_params* cctxParams)
{
DEBUGLOG(5, "ZSTD_blockSplitterEnabled(splitBlocks=%d)", cctxParams->splitBlocks);
return (cctxParams->splitBlocks != 0);
DEBUGLOG(5, "ZSTD_blockSplitterEnabled (useBlockSplitter=%d)", cctxParams->useBlockSplitter);
assert(cctxParams->useBlockSplitter != ZSTD_ps_auto);
return (cctxParams->useBlockSplitter == ZSTD_ps_enable);
}
/* Type returned by ZSTD_buildSequencesStatistics containing finalized symbol encoding types
@@ -2546,6 +2569,7 @@ ZSTD_buildSequencesStatistics(seqStore_t* seqStorePtr, size_t nbSeq,
* compresses both literals and sequences
* Returns compressed size of block, or a zstd error.
*/
#define SUSPECT_UNCOMPRESSIBLE_LITERAL_RATIO 20
MEM_STATIC size_t
ZSTD_entropyCompressSeqStore_internal(seqStore_t* seqStorePtr,
const ZSTD_entropyCTables_t* prevEntropy,
@@ -2580,15 +2604,19 @@ ZSTD_entropyCompressSeqStore_internal(seqStore_t* seqStorePtr,
/* Compress literals */
{ const BYTE* const literals = seqStorePtr->litStart;
size_t const numSequences = seqStorePtr->sequences - seqStorePtr->sequencesStart;
size_t const numLiterals = seqStorePtr->lit - seqStorePtr->litStart;
/* Base suspicion of uncompressibility on ratio of literals to sequences */
unsigned const suspectUncompressible = (numSequences == 0) || (numLiterals / numSequences >= SUSPECT_UNCOMPRESSIBLE_LITERAL_RATIO);
size_t const litSize = (size_t)(seqStorePtr->lit - literals);
size_t const cSize = ZSTD_compressLiterals(
&prevEntropy->huf, &nextEntropy->huf,
cctxParams->cParams.strategy,
ZSTD_disableLiteralsCompression(cctxParams),
ZSTD_literalsCompressionIsDisabled(cctxParams),
op, dstCapacity,
literals, litSize,
entropyWorkspace, entropyWkspSize,
bmi2);
bmi2, suspectUncompressible);
FORWARD_IF_ERROR(cSize, "ZSTD_compressLiterals failed");
assert(cSize <= dstCapacity);
op += cSize;
@@ -2693,7 +2721,7 @@ ZSTD_entropyCompressSeqStore(seqStore_t* seqStorePtr,
/* ZSTD_selectBlockCompressor() :
* Not static, but internal use only (used by long distance matcher)
* assumption : strat is a valid strategy */
ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, ZSTD_useRowMatchFinderMode_e useRowMatchFinder, ZSTD_dictMode_e dictMode)
ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, ZSTD_paramSwitch_e useRowMatchFinder, ZSTD_dictMode_e dictMode)
{
static const ZSTD_blockCompressor blockCompressor[4][ZSTD_STRATEGY_MAX+1] = {
{ ZSTD_compressBlock_fast /* default for 0 */,
@@ -2758,7 +2786,7 @@ ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, ZSTD_useRow
ZSTD_compressBlock_lazy2_dedicatedDictSearch_row }
};
DEBUGLOG(4, "Selecting a row-based matchfinder");
assert(useRowMatchFinder != ZSTD_urm_auto);
assert(useRowMatchFinder != ZSTD_ps_auto);
selectedCompressor = rowBasedBlockCompressors[(int)dictMode][(int)strat - (int)ZSTD_greedy];
} else {
selectedCompressor = blockCompressor[(int)dictMode][(int)strat];
@@ -2825,7 +2853,7 @@ static size_t ZSTD_buildSeqStore(ZSTD_CCtx* zc, const void* src, size_t srcSize)
zc->blockState.nextCBlock->rep[i] = zc->blockState.prevCBlock->rep[i];
}
if (zc->externSeqStore.pos < zc->externSeqStore.size) {
assert(!zc->appliedParams.ldmParams.enableLdm);
assert(zc->appliedParams.ldmParams.enableLdm == ZSTD_ps_disable);
/* Updates ldmSeqStore.pos */
lastLLSize =
ZSTD_ldm_blockCompress(&zc->externSeqStore,
@@ -2834,7 +2862,7 @@ static size_t ZSTD_buildSeqStore(ZSTD_CCtx* zc, const void* src, size_t srcSize)
zc->appliedParams.useRowMatchFinder,
src, srcSize);
assert(zc->externSeqStore.pos <= zc->externSeqStore.size);
} else if (zc->appliedParams.ldmParams.enableLdm) {
} else if (zc->appliedParams.ldmParams.enableLdm == ZSTD_ps_enable) {
rawSeqStore_t ldmSeqStore = kNullRawSeqStore;
ldmSeqStore.seq = zc->ldmSequences;
@@ -3027,7 +3055,7 @@ static size_t ZSTD_buildBlockEntropyStats_literals(void* const src, size_t srcSi
const ZSTD_hufCTables_t* prevHuf,
ZSTD_hufCTables_t* nextHuf,
ZSTD_hufCTablesMetadata_t* hufMetadata,
const int disableLiteralsCompression,
const int literalsCompressionIsDisabled,
void* workspace, size_t wkspSize)
{
BYTE* const wkspStart = (BYTE*)workspace;
@@ -3045,7 +3073,7 @@ static size_t ZSTD_buildBlockEntropyStats_literals(void* const src, size_t srcSi
/* Prepare nextEntropy assuming reusing the existing table */
ZSTD_memcpy(nextHuf, prevHuf, sizeof(*prevHuf));
if (disableLiteralsCompression) {
if (literalsCompressionIsDisabled) {
DEBUGLOG(5, "set_basic - disabled");
hufMetadata->hType = set_basic;
return 0;
@@ -3192,7 +3220,7 @@ size_t ZSTD_buildBlockEntropyStats(seqStore_t* seqStorePtr,
ZSTD_buildBlockEntropyStats_literals(seqStorePtr->litStart, litSize,
&prevEntropy->huf, &nextEntropy->huf,
&entropyMetadata->hufMetadata,
ZSTD_disableLiteralsCompression(cctxParams),
ZSTD_literalsCompressionIsDisabled(cctxParams),
workspace, wkspSize);
FORWARD_IF_ERROR(entropyMetadata->hufMetadata.hufDesSize, "ZSTD_buildBlockEntropyStats_literals failed");
entropyMetadata->fseMetadata.fseTablesSize =
@@ -3235,7 +3263,7 @@ static size_t ZSTD_estimateBlockSize_literal(const BYTE* literals, size_t litSiz
static size_t ZSTD_estimateBlockSize_symbolType(symbolEncodingType_e type,
const BYTE* codeTable, size_t nbSeq, unsigned maxCode,
const FSE_CTable* fseCTable,
const U32* additionalBits,
const U8* additionalBits,
short const* defaultNorm, U32 defaultNormLog, U32 defaultMax,
void* workspace, size_t wkspSize)
{
@@ -3319,19 +3347,20 @@ static size_t ZSTD_estimateBlockSize(const BYTE* literals, size_t litSize,
*
* Returns the estimated compressed size of the seqStore, or a zstd error.
*/
static size_t ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(seqStore_t* seqStore, const ZSTD_CCtx* zc) {
ZSTD_entropyCTablesMetadata_t entropyMetadata;
static size_t ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(seqStore_t* seqStore, ZSTD_CCtx* zc) {
ZSTD_entropyCTablesMetadata_t* entropyMetadata = &zc->blockSplitCtx.entropyMetadata;
DEBUGLOG(6, "ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize()");
FORWARD_IF_ERROR(ZSTD_buildBlockEntropyStats(seqStore,
&zc->blockState.prevCBlock->entropy,
&zc->blockState.nextCBlock->entropy,
&zc->appliedParams,
&entropyMetadata,
entropyMetadata,
zc->entropyWorkspace, ENTROPY_WORKSPACE_SIZE /* statically allocated in resetCCtx */), "");
return ZSTD_estimateBlockSize(seqStore->litStart, (size_t)(seqStore->lit - seqStore->litStart),
seqStore->ofCode, seqStore->llCode, seqStore->mlCode,
(size_t)(seqStore->sequences - seqStore->sequencesStart),
&zc->blockState.nextCBlock->entropy, &entropyMetadata, zc->entropyWorkspace, ENTROPY_WORKSPACE_SIZE,
(int)(entropyMetadata.hufMetadata.hType == set_compressed), 1);
&zc->blockState.nextCBlock->entropy, entropyMetadata, zc->entropyWorkspace, ENTROPY_WORKSPACE_SIZE,
(int)(entropyMetadata->hufMetadata.hType == set_compressed), 1);
}
/* Returns literals bytes represented in a seqStore */
@@ -3474,6 +3503,7 @@ static size_t ZSTD_compressSeqStore_singleBlock(ZSTD_CCtx* zc, seqStore_t* const
if (isPartition)
ZSTD_seqStore_resolveOffCodes(dRep, cRep, seqStore, (U32)(seqStore->sequences - seqStore->sequencesStart));
RETURN_ERROR_IF(dstCapacity < ZSTD_blockHeaderSize, dstSize_tooSmall, "Block header doesn't fit");
cSeqsSize = ZSTD_entropyCompressSeqStore(seqStore,
&zc->blockState.prevCBlock->entropy, &zc->blockState.nextCBlock->entropy,
&zc->appliedParams,
@@ -3499,9 +3529,6 @@ static size_t ZSTD_compressSeqStore_singleBlock(ZSTD_CCtx* zc, seqStore_t* const
return 0;
}
if (zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat_valid)
zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat_check;
if (cSeqsSize == 0) {
cSize = ZSTD_noCompressBlock(op, dstCapacity, ip, srcSize, lastBlock);
FORWARD_IF_ERROR(cSize, "Nocompress block failed");
@@ -3518,6 +3545,10 @@ static size_t ZSTD_compressSeqStore_singleBlock(ZSTD_CCtx* zc, seqStore_t* const
cSize = ZSTD_blockHeaderSize + cSeqsSize;
DEBUGLOG(4, "Writing out compressed block, size: %zu", cSize);
}
if (zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode == FSE_repeat_valid)
zc->blockState.prevCBlock->entropy.fse.offcode_repeatMode = FSE_repeat_check;
return cSize;
}
@@ -3528,7 +3559,6 @@ typedef struct {
} seqStoreSplits;
#define MIN_SEQUENCES_BLOCK_SPLITTING 300
#define MAX_NB_SPLITS 196
/* Helper function to perform the recursive search for block splits.
* Estimates the cost of seqStore prior to split, and estimates the cost of splitting the sequences in half.
@@ -3539,29 +3569,31 @@ typedef struct {
* In theory, this means the absolute largest recursion depth is 10 == log2(maxNbSeqInBlock/MIN_SEQUENCES_BLOCK_SPLITTING).
* In practice, recursion depth usually doesn't go beyond 4.
*
* Furthermore, the number of splits is capped by MAX_NB_SPLITS. At MAX_NB_SPLITS == 196 with the current existing blockSize
* Furthermore, the number of splits is capped by ZSTD_MAX_NB_BLOCK_SPLITS. At ZSTD_MAX_NB_BLOCK_SPLITS == 196 with the current existing blockSize
* maximum of 128 KB, this value is actually impossible to reach.
*/
static void ZSTD_deriveBlockSplitsHelper(seqStoreSplits* splits, size_t startIdx, size_t endIdx,
const ZSTD_CCtx* zc, const seqStore_t* origSeqStore) {
seqStore_t fullSeqStoreChunk;
seqStore_t firstHalfSeqStore;
seqStore_t secondHalfSeqStore;
ZSTD_CCtx* zc, const seqStore_t* origSeqStore) {
seqStore_t* fullSeqStoreChunk = &zc->blockSplitCtx.fullSeqStoreChunk;
seqStore_t* firstHalfSeqStore = &zc->blockSplitCtx.firstHalfSeqStore;
seqStore_t* secondHalfSeqStore = &zc->blockSplitCtx.secondHalfSeqStore;
size_t estimatedOriginalSize;
size_t estimatedFirstHalfSize;
size_t estimatedSecondHalfSize;
size_t midIdx = (startIdx + endIdx)/2;
if (endIdx - startIdx < MIN_SEQUENCES_BLOCK_SPLITTING || splits->idx >= MAX_NB_SPLITS) {
if (endIdx - startIdx < MIN_SEQUENCES_BLOCK_SPLITTING || splits->idx >= ZSTD_MAX_NB_BLOCK_SPLITS) {
DEBUGLOG(6, "ZSTD_deriveBlockSplitsHelper: Too few sequences");
return;
}
ZSTD_deriveSeqStoreChunk(&fullSeqStoreChunk, origSeqStore, startIdx, endIdx);
ZSTD_deriveSeqStoreChunk(&firstHalfSeqStore, origSeqStore, startIdx, midIdx);
ZSTD_deriveSeqStoreChunk(&secondHalfSeqStore, origSeqStore, midIdx, endIdx);
estimatedOriginalSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(&fullSeqStoreChunk, zc);
estimatedFirstHalfSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(&firstHalfSeqStore, zc);
estimatedSecondHalfSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(&secondHalfSeqStore, zc);
DEBUGLOG(5, "Estimated original block size: %zu -- First half split: %zu -- Second half split: %zu",
DEBUGLOG(4, "ZSTD_deriveBlockSplitsHelper: startIdx=%zu endIdx=%zu", startIdx, endIdx);
ZSTD_deriveSeqStoreChunk(fullSeqStoreChunk, origSeqStore, startIdx, endIdx);
ZSTD_deriveSeqStoreChunk(firstHalfSeqStore, origSeqStore, startIdx, midIdx);
ZSTD_deriveSeqStoreChunk(secondHalfSeqStore, origSeqStore, midIdx, endIdx);
estimatedOriginalSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(fullSeqStoreChunk, zc);
estimatedFirstHalfSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(firstHalfSeqStore, zc);
estimatedSecondHalfSize = ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(secondHalfSeqStore, zc);
DEBUGLOG(4, "Estimated original block size: %zu -- First half split: %zu -- Second half split: %zu",
estimatedOriginalSize, estimatedFirstHalfSize, estimatedSecondHalfSize);
if (ZSTD_isError(estimatedOriginalSize) || ZSTD_isError(estimatedFirstHalfSize) || ZSTD_isError(estimatedSecondHalfSize)) {
return;
@@ -3601,12 +3633,12 @@ static size_t ZSTD_compressBlock_splitBlock_internal(ZSTD_CCtx* zc, void* dst, s
size_t cSize = 0;
const BYTE* ip = (const BYTE*)src;
BYTE* op = (BYTE*)dst;
U32 partitions[MAX_NB_SPLITS];
size_t i = 0;
size_t srcBytesTotal = 0;
U32* partitions = zc->blockSplitCtx.partitions; /* size == ZSTD_MAX_NB_BLOCK_SPLITS */
seqStore_t* nextSeqStore = &zc->blockSplitCtx.nextSeqStore;
seqStore_t* currSeqStore = &zc->blockSplitCtx.currSeqStore;
size_t numSplits = ZSTD_deriveBlockSplits(zc, partitions, nbSeq);
seqStore_t nextSeqStore;
seqStore_t currSeqStore;
/* If a block is split and some partitions are emitted as RLE/uncompressed, then repcode history
* may become invalid. In order to reconcile potentially invalid repcodes, we keep track of two
@@ -3626,6 +3658,7 @@ static size_t ZSTD_compressBlock_splitBlock_internal(ZSTD_CCtx* zc, void* dst, s
repcodes_t cRep;
ZSTD_memcpy(dRep.rep, zc->blockState.prevCBlock->rep, sizeof(repcodes_t));
ZSTD_memcpy(cRep.rep, zc->blockState.prevCBlock->rep, sizeof(repcodes_t));
ZSTD_memset(nextSeqStore, 0, sizeof(seqStore_t));
DEBUGLOG(4, "ZSTD_compressBlock_splitBlock_internal (dstCapacity=%u, dictLimit=%u, nextToUpdate=%u)",
(unsigned)dstCapacity, (unsigned)zc->blockState.matchState.window.dictLimit,
@@ -3643,36 +3676,36 @@ static size_t ZSTD_compressBlock_splitBlock_internal(ZSTD_CCtx* zc, void* dst, s
return cSizeSingleBlock;
}
ZSTD_deriveSeqStoreChunk(&currSeqStore, &zc->seqStore, 0, partitions[0]);
ZSTD_deriveSeqStoreChunk(currSeqStore, &zc->seqStore, 0, partitions[0]);
for (i = 0; i <= numSplits; ++i) {
size_t srcBytes;
size_t cSizeChunk;
U32 const lastPartition = (i == numSplits);
U32 lastBlockEntireSrc = 0;
srcBytes = ZSTD_countSeqStoreLiteralsBytes(&currSeqStore) + ZSTD_countSeqStoreMatchBytes(&currSeqStore);
srcBytes = ZSTD_countSeqStoreLiteralsBytes(currSeqStore) + ZSTD_countSeqStoreMatchBytes(currSeqStore);
srcBytesTotal += srcBytes;
if (lastPartition) {
/* This is the final partition, need to account for possible last literals */
srcBytes += blockSize - srcBytesTotal;
lastBlockEntireSrc = lastBlock;
} else {
ZSTD_deriveSeqStoreChunk(&nextSeqStore, &zc->seqStore, partitions[i], partitions[i+1]);
ZSTD_deriveSeqStoreChunk(nextSeqStore, &zc->seqStore, partitions[i], partitions[i+1]);
}
cSizeChunk = ZSTD_compressSeqStore_singleBlock(zc, &currSeqStore,
cSizeChunk = ZSTD_compressSeqStore_singleBlock(zc, currSeqStore,
&dRep, &cRep,
op, dstCapacity,
ip, srcBytes,
lastBlockEntireSrc, 1 /* isPartition */);
DEBUGLOG(5, "Estimated size: %zu actual size: %zu", ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(&currSeqStore, zc), cSizeChunk);
DEBUGLOG(5, "Estimated size: %zu actual size: %zu", ZSTD_buildEntropyStatisticsAndEstimateSubBlockSize(currSeqStore, zc), cSizeChunk);
FORWARD_IF_ERROR(cSizeChunk, "Compressing chunk failed!");
ip += srcBytes;
op += cSizeChunk;
dstCapacity -= cSizeChunk;
cSize += cSizeChunk;
currSeqStore = nextSeqStore;
*currSeqStore = *nextSeqStore;
assert(cSizeChunk <= ZSTD_BLOCKSIZE_MAX + ZSTD_blockHeaderSize);
}
/* cRep and dRep may have diverged during the compression. If so, we use the dRep repcodes
@@ -3690,6 +3723,7 @@ static size_t ZSTD_compressBlock_splitBlock(ZSTD_CCtx* zc,
U32 nbSeq;
size_t cSize;
DEBUGLOG(4, "ZSTD_compressBlock_splitBlock");
assert(zc->appliedParams.useBlockSplitter == ZSTD_ps_enable);
{ const size_t bss = ZSTD_buildSeqStore(zc, src, srcSize);
FORWARD_IF_ERROR(bss, "ZSTD_buildSeqStore failed");
@@ -3704,7 +3738,6 @@ static size_t ZSTD_compressBlock_splitBlock(ZSTD_CCtx* zc,
nbSeq = (U32)(zc->seqStore.sequences - zc->seqStore.sequencesStart);
}
assert(zc->appliedParams.splitBlocks == 1);
cSize = ZSTD_compressBlock_splitBlock_internal(zc, dst, dstCapacity, src, srcSize, lastBlock, nbSeq);
FORWARD_IF_ERROR(cSize, "Splitting blocks failed!");
return cSize;
@@ -3746,12 +3779,6 @@ static size_t ZSTD_compressBlock_internal(ZSTD_CCtx* zc,
zc->entropyWorkspace, ENTROPY_WORKSPACE_SIZE /* statically allocated in resetCCtx */,
zc->bmi2);
if (zc->seqCollector.collectSequences) {
ZSTD_copyBlockSequences(zc);
return 0;
}
if (frame &&
/* We don't want to emit our first block as a RLE even if it qualifies because
* doing so will cause the decoder (cli only) to throw a "should consume all input error."
@@ -3915,6 +3942,7 @@ static size_t ZSTD_compress_frameChunk(ZSTD_CCtx* cctx,
ZSTD_overflowCorrectIfNeeded(
ms, &cctx->workspace, &cctx->appliedParams, ip, ip + blockSize);
ZSTD_checkDictValidity(&ms->window, ip + blockSize, maxDist, &ms->loadedDictEnd, &ms->dictMatchState);
ZSTD_window_enforceMaxDist(&ms->window, ip, maxDist, &ms->loadedDictEnd, &ms->dictMatchState);
/* Ensure hash/chain table insertion resumes no sooner than lowlimit */
if (ms->nextToUpdate < ms->window.lowLimit) ms->nextToUpdate = ms->window.lowLimit;
@@ -3991,7 +4019,9 @@ static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
if (!singleSegment) op[pos++] = windowLogByte;
switch(dictIDSizeCode)
{
default: assert(0); /* impossible */
default:
assert(0); /* impossible */
ZSTD_FALLTHROUGH;
case 0 : break;
case 1 : op[pos] = (BYTE)(dictID); pos++; break;
case 2 : MEM_writeLE16(op+pos, (U16)dictID); pos+=2; break;
@@ -3999,7 +4029,9 @@ static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
}
switch(fcsCode)
{
default: assert(0); /* impossible */
default:
assert(0); /* impossible */
ZSTD_FALLTHROUGH;
case 0 : if (singleSegment) op[pos++] = (BYTE)(pledgedSrcSize); break;
case 1 : MEM_writeLE16(op+pos, (U16)(pledgedSrcSize-256)); pos+=2; break;
case 2 : MEM_writeLE32(op+pos, (U32)(pledgedSrcSize)); pos+=4; break;
@@ -4047,7 +4079,7 @@ size_t ZSTD_referenceExternalSequences(ZSTD_CCtx* cctx, rawSeq* seq, size_t nbSe
{
RETURN_ERROR_IF(cctx->stage != ZSTDcs_init, stage_wrong,
"wrong cctx stage");
RETURN_ERROR_IF(cctx->appliedParams.ldmParams.enableLdm,
RETURN_ERROR_IF(cctx->appliedParams.ldmParams.enableLdm == ZSTD_ps_enable,
parameter_unsupported,
"incompatible with ldm");
cctx->externSeqStore.seq = seq;
@@ -4088,7 +4120,7 @@ static size_t ZSTD_compressContinue_internal (ZSTD_CCtx* cctx,
ms->forceNonContiguous = 0;
ms->nextToUpdate = ms->window.dictLimit;
}
if (cctx->appliedParams.ldmParams.enableLdm) {
if (cctx->appliedParams.ldmParams.enableLdm == ZSTD_ps_enable) {
ZSTD_window_update(&cctx->ldmState.window, src, srcSize, /* forceNonContiguous */ 0);
}
@@ -4157,7 +4189,7 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_matchState_t* ms,
{
const BYTE* ip = (const BYTE*) src;
const BYTE* const iend = ip + srcSize;
int const loadLdmDict = params->ldmParams.enableLdm && ls != NULL;
int const loadLdmDict = params->ldmParams.enableLdm == ZSTD_ps_enable && ls != NULL;
/* Assert that we the ms params match the params we're being given */
ZSTD_assertEqualCParams(params->cParams, ms->cParams);
@@ -4214,8 +4246,8 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_matchState_t* ms,
assert(ms->chainTable != NULL);
ZSTD_dedicatedDictSearch_lazy_loadDictionary(ms, iend-HASH_READ_SIZE);
} else {
assert(params->useRowMatchFinder != ZSTD_urm_auto);
if (params->useRowMatchFinder == ZSTD_urm_enableRowMatchFinder) {
assert(params->useRowMatchFinder != ZSTD_ps_auto);
if (params->useRowMatchFinder == ZSTD_ps_enable) {
size_t const tagTableSize = ((size_t)1 << params->cParams.hashLog) * sizeof(U16);
ZSTD_memset(ms->tagTable, 0, tagTableSize);
ZSTD_row_update(ms, iend-HASH_READ_SIZE);
@@ -4715,7 +4747,7 @@ size_t ZSTD_estimateCDictSize_advanced(
+ ZSTD_cwksp_alloc_size(HUF_WORKSPACE_SIZE)
/* enableDedicatedDictSearch == 1 ensures that CDict estimation will not be too small
* in case we are using DDS with row-hash. */
+ ZSTD_sizeof_matchState(&cParams, ZSTD_resolveRowMatchFinderMode(ZSTD_urm_auto, &cParams),
+ ZSTD_sizeof_matchState(&cParams, ZSTD_resolveRowMatchFinderMode(ZSTD_ps_auto, &cParams),
/* enableDedicatedDictSearch */ 1, /* forCCtx */ 0)
+ (dictLoadMethod == ZSTD_dlm_byRef ? 0
: ZSTD_cwksp_alloc_size(ZSTD_cwksp_align(dictSize, sizeof(void *))));
@@ -4792,7 +4824,7 @@ static size_t ZSTD_initCDict_internal(
static ZSTD_CDict* ZSTD_createCDict_advanced_internal(size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_compressionParameters cParams,
ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
ZSTD_paramSwitch_e useRowMatchFinder,
U32 enableDedicatedDictSearch,
ZSTD_customMem customMem)
{
@@ -4842,7 +4874,7 @@ ZSTD_CDict* ZSTD_createCDict_advanced(const void* dictBuffer, size_t dictSize,
&cctxParams, customMem);
}
ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced2(
ZSTD_CDict* ZSTD_createCDict_advanced2(
const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_dictContentType_e dictContentType,
@@ -4947,7 +4979,7 @@ const ZSTD_CDict* ZSTD_initStaticCDict(
ZSTD_dictContentType_e dictContentType,
ZSTD_compressionParameters cParams)
{
ZSTD_useRowMatchFinderMode_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(ZSTD_urm_auto, &cParams);
ZSTD_paramSwitch_e const useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(ZSTD_ps_auto, &cParams);
/* enableDedicatedDictSearch == 1 ensures matchstate is not too small in case this CDict will be used for DDS + row hash */
size_t const matchStateSize = ZSTD_sizeof_matchState(&cParams, useRowMatchFinder, /* enableDedicatedDictSearch */ 1, /* forCCtx */ 0);
size_t const neededSize = ZSTD_cwksp_alloc_size(sizeof(ZSTD_CDict))
@@ -5403,7 +5435,7 @@ static size_t ZSTD_compressStream_generic(ZSTD_CStream* zcs,
zcs->outBuffFlushedSize = 0;
zcs->streamStage = zcss_flush; /* pass-through to flush stage */
}
/* fall-through */
ZSTD_FALLTHROUGH;
case zcss_flush:
DEBUGLOG(5, "flush stage");
assert(zcs->appliedParams.outBufferMode == ZSTD_bm_buffered);
@@ -5524,17 +5556,8 @@ static size_t ZSTD_CCtx_init_compressStream2(ZSTD_CCtx* cctx,
dictSize, mode);
}
if (ZSTD_CParams_shouldEnableLdm(&params.cParams)) {
/* Enable LDM by default for optimal parser and window size >= 128MB */
DEBUGLOG(4, "LDM enabled by default (window size >= 128MB, strategy >= btopt)");
params.ldmParams.enableLdm = 1;
}
if (ZSTD_CParams_useBlockSplitter(&params.cParams)) {
DEBUGLOG(4, "Block splitter enabled by default (window size >= 128K, strategy >= btopt)");
params.splitBlocks = 1;
}
params.useBlockSplitter = ZSTD_resolveBlockSplitterMode(params.useBlockSplitter, &params.cParams);
params.ldmParams.enableLdm = ZSTD_resolveEnableLdm(params.ldmParams.enableLdm, &params.cParams);
params.useRowMatchFinder = ZSTD_resolveRowMatchFinderMode(params.useRowMatchFinder, &params.cParams);
#ifdef ZSTD_MULTITHREAD
@@ -6140,119 +6163,12 @@ size_t ZSTD_endStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output)
/*-===== Pre-defined compression levels =====-*/
#include "clevels.h"
#define ZSTD_MAX_CLEVEL 22
int ZSTD_maxCLevel(void) { return ZSTD_MAX_CLEVEL; }
int ZSTD_minCLevel(void) { return (int)-ZSTD_TARGETLENGTH_MAX; }
int ZSTD_defaultCLevel(void) { return ZSTD_CLEVEL_DEFAULT; }
static const ZSTD_compressionParameters ZSTD_defaultCParameters[4][ZSTD_MAX_CLEVEL+1] = {
{ /* "default" - for any srcSize > 256 KB */
/* W, C, H, S, L, TL, strat */
{ 19, 12, 13, 1, 6, 1, ZSTD_fast }, /* base for negative levels */
{ 19, 13, 14, 1, 7, 0, ZSTD_fast }, /* level 1 */
{ 20, 15, 16, 1, 6, 0, ZSTD_fast }, /* level 2 */
{ 21, 16, 17, 1, 5, 0, ZSTD_dfast }, /* level 3 */
{ 21, 18, 18, 1, 5, 0, ZSTD_dfast }, /* level 4 */
{ 21, 18, 19, 2, 5, 2, ZSTD_greedy }, /* level 5 */
{ 21, 19, 19, 3, 5, 4, ZSTD_greedy }, /* level 6 */
{ 21, 19, 19, 3, 5, 8, ZSTD_lazy }, /* level 7 */
{ 21, 19, 19, 3, 5, 16, ZSTD_lazy2 }, /* level 8 */
{ 21, 19, 20, 4, 5, 16, ZSTD_lazy2 }, /* level 9 */
{ 22, 20, 21, 4, 5, 16, ZSTD_lazy2 }, /* level 10 */
{ 22, 21, 22, 4, 5, 16, ZSTD_lazy2 }, /* level 11 */
{ 22, 21, 22, 5, 5, 16, ZSTD_lazy2 }, /* level 12 */
{ 22, 21, 22, 5, 5, 32, ZSTD_btlazy2 }, /* level 13 */
{ 22, 22, 23, 5, 5, 32, ZSTD_btlazy2 }, /* level 14 */
{ 22, 23, 23, 6, 5, 32, ZSTD_btlazy2 }, /* level 15 */
{ 22, 22, 22, 5, 5, 48, ZSTD_btopt }, /* level 16 */
{ 23, 23, 22, 5, 4, 64, ZSTD_btopt }, /* level 17 */
{ 23, 23, 22, 6, 3, 64, ZSTD_btultra }, /* level 18 */
{ 23, 24, 22, 7, 3,256, ZSTD_btultra2}, /* level 19 */
{ 25, 25, 23, 7, 3,256, ZSTD_btultra2}, /* level 20 */
{ 26, 26, 24, 7, 3,512, ZSTD_btultra2}, /* level 21 */
{ 27, 27, 25, 9, 3,999, ZSTD_btultra2}, /* level 22 */
},
{ /* for srcSize <= 256 KB */
/* W, C, H, S, L, T, strat */
{ 18, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 18, 13, 14, 1, 6, 0, ZSTD_fast }, /* level 1 */
{ 18, 14, 14, 1, 5, 0, ZSTD_dfast }, /* level 2 */
{ 18, 16, 16, 1, 4, 0, ZSTD_dfast }, /* level 3 */
{ 18, 16, 17, 2, 5, 2, ZSTD_greedy }, /* level 4.*/
{ 18, 18, 18, 3, 5, 2, ZSTD_greedy }, /* level 5.*/
{ 18, 18, 19, 3, 5, 4, ZSTD_lazy }, /* level 6.*/
{ 18, 18, 19, 4, 4, 4, ZSTD_lazy }, /* level 7 */
{ 18, 18, 19, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 18, 18, 19, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 18, 18, 19, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 18, 18, 19, 5, 4, 12, ZSTD_btlazy2 }, /* level 11.*/
{ 18, 19, 19, 7, 4, 12, ZSTD_btlazy2 }, /* level 12.*/
{ 18, 18, 19, 4, 4, 16, ZSTD_btopt }, /* level 13 */
{ 18, 18, 19, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
{ 18, 18, 19, 6, 3,128, ZSTD_btopt }, /* level 15.*/
{ 18, 19, 19, 6, 3,128, ZSTD_btultra }, /* level 16.*/
{ 18, 19, 19, 8, 3,256, ZSTD_btultra }, /* level 17.*/
{ 18, 19, 19, 6, 3,128, ZSTD_btultra2}, /* level 18.*/
{ 18, 19, 19, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 18, 19, 19, 10, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 18, 19, 19, 12, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 18, 19, 19, 13, 3,999, ZSTD_btultra2}, /* level 22.*/
},
{ /* for srcSize <= 128 KB */
/* W, C, H, S, L, T, strat */
{ 17, 12, 12, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 17, 12, 13, 1, 6, 0, ZSTD_fast }, /* level 1 */
{ 17, 13, 15, 1, 5, 0, ZSTD_fast }, /* level 2 */
{ 17, 15, 16, 2, 5, 0, ZSTD_dfast }, /* level 3 */
{ 17, 17, 17, 2, 4, 0, ZSTD_dfast }, /* level 4 */
{ 17, 16, 17, 3, 4, 2, ZSTD_greedy }, /* level 5 */
{ 17, 17, 17, 3, 4, 4, ZSTD_lazy }, /* level 6 */
{ 17, 17, 17, 3, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 17, 17, 17, 4, 4, 8, ZSTD_lazy2 }, /* level 8 */
{ 17, 17, 17, 5, 4, 8, ZSTD_lazy2 }, /* level 9 */
{ 17, 17, 17, 6, 4, 8, ZSTD_lazy2 }, /* level 10 */
{ 17, 17, 17, 5, 4, 8, ZSTD_btlazy2 }, /* level 11 */
{ 17, 18, 17, 7, 4, 12, ZSTD_btlazy2 }, /* level 12 */
{ 17, 18, 17, 3, 4, 12, ZSTD_btopt }, /* level 13.*/
{ 17, 18, 17, 4, 3, 32, ZSTD_btopt }, /* level 14.*/
{ 17, 18, 17, 6, 3,256, ZSTD_btopt }, /* level 15.*/
{ 17, 18, 17, 6, 3,128, ZSTD_btultra }, /* level 16.*/
{ 17, 18, 17, 8, 3,256, ZSTD_btultra }, /* level 17.*/
{ 17, 18, 17, 10, 3,512, ZSTD_btultra }, /* level 18.*/
{ 17, 18, 17, 5, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 17, 18, 17, 7, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 17, 18, 17, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 17, 18, 17, 11, 3,999, ZSTD_btultra2}, /* level 22.*/
},
{ /* for srcSize <= 16 KB */
/* W, C, H, S, L, T, strat */
{ 14, 12, 13, 1, 5, 1, ZSTD_fast }, /* base for negative levels */
{ 14, 14, 15, 1, 5, 0, ZSTD_fast }, /* level 1 */
{ 14, 14, 15, 1, 4, 0, ZSTD_fast }, /* level 2 */
{ 14, 14, 15, 2, 4, 0, ZSTD_dfast }, /* level 3 */
{ 14, 14, 14, 4, 4, 2, ZSTD_greedy }, /* level 4 */
{ 14, 14, 14, 3, 4, 4, ZSTD_lazy }, /* level 5.*/
{ 14, 14, 14, 4, 4, 8, ZSTD_lazy2 }, /* level 6 */
{ 14, 14, 14, 6, 4, 8, ZSTD_lazy2 }, /* level 7 */
{ 14, 14, 14, 8, 4, 8, ZSTD_lazy2 }, /* level 8.*/
{ 14, 15, 14, 5, 4, 8, ZSTD_btlazy2 }, /* level 9.*/
{ 14, 15, 14, 9, 4, 8, ZSTD_btlazy2 }, /* level 10.*/
{ 14, 15, 14, 3, 4, 12, ZSTD_btopt }, /* level 11.*/
{ 14, 15, 14, 4, 3, 24, ZSTD_btopt }, /* level 12.*/
{ 14, 15, 14, 5, 3, 32, ZSTD_btultra }, /* level 13.*/
{ 14, 15, 15, 6, 3, 64, ZSTD_btultra }, /* level 14.*/
{ 14, 15, 15, 7, 3,256, ZSTD_btultra }, /* level 15.*/
{ 14, 15, 15, 5, 3, 48, ZSTD_btultra2}, /* level 16.*/
{ 14, 15, 15, 6, 3,128, ZSTD_btultra2}, /* level 17.*/
{ 14, 15, 15, 7, 3,256, ZSTD_btultra2}, /* level 18.*/
{ 14, 15, 15, 8, 3,256, ZSTD_btultra2}, /* level 19.*/
{ 14, 15, 15, 8, 3,512, ZSTD_btultra2}, /* level 20.*/
{ 14, 15, 15, 9, 3,512, ZSTD_btultra2}, /* level 21.*/
{ 14, 15, 15, 10, 3,999, ZSTD_btultra2}, /* level 22.*/
},
};
static ZSTD_compressionParameters ZSTD_dedicatedDictSearch_getCParams(int const compressionLevel, size_t const dictSize)
{
ZSTD_compressionParameters cParams = ZSTD_getCParams_internal(compressionLevel, 0, dictSize, ZSTD_cpm_createCDict);
lib/compress/zstd_compress_internal.h
+102 -44
View File
@@ -63,7 +63,7 @@ typedef struct {
} ZSTD_localDict;
typedef struct {
HUF_CElt CTable[HUF_CTABLE_SIZE_U32(255)];
HUF_CElt CTable[HUF_CTABLE_SIZE_ST(255)];
HUF_repeat repeatMode;
} ZSTD_hufCTables_t;
@@ -179,7 +179,7 @@ typedef struct {
U32 offCodeSumBasePrice; /* to compare to log2(offreq) */
ZSTD_OptPrice_e priceType; /* prices can be determined dynamically, or follow a pre-defined cost structure */
const ZSTD_entropyCTables_t* symbolCosts; /* pre-calculated dictionary statistics */
ZSTD_literalCompressionMode_e literalCompressionMode;
ZSTD_paramSwitch_e literalCompressionMode;
} optState_t;
typedef struct {
@@ -199,6 +199,8 @@ typedef struct {
*/
} ZSTD_window_t;
#define ZSTD_WINDOW_START_INDEX 2
typedef struct ZSTD_matchState_t ZSTD_matchState_t;
#define ZSTD_ROW_HASH_CACHE_SIZE 8 /* Size of prefetching hash cache for row-based matchfinder */
@@ -264,7 +266,7 @@ typedef struct {
} ldmState_t;
typedef struct {
U32 enableLdm; /* 1 if enable long distance matching */
ZSTD_paramSwitch_e enableLdm; /* ZSTD_ps_enable to enable LDM. ZSTD_ps_auto by default */
U32 hashLog; /* Log size of hashTable */
U32 bucketSizeLog; /* Log bucket size for collision resolution, at most 8 */
U32 minMatchLength; /* Minimum match length */
@@ -295,7 +297,7 @@ struct ZSTD_CCtx_params_s {
* There is no guarantee that hint is close to actual source size */
ZSTD_dictAttachPref_e attachDictPref;
ZSTD_literalCompressionMode_e literalCompressionMode;
ZSTD_paramSwitch_e literalCompressionMode;
/* Multithreading: used to pass parameters to mtctx */
int nbWorkers;
@@ -318,10 +320,10 @@ struct ZSTD_CCtx_params_s {
int validateSequences;
/* Block splitting */
int splitBlocks;
ZSTD_paramSwitch_e useBlockSplitter;
/* Param for deciding whether to use row-based matchfinder */
ZSTD_useRowMatchFinderMode_e useRowMatchFinder;
ZSTD_paramSwitch_e useRowMatchFinder;
/* Always load a dictionary in ext-dict mode (not prefix mode)? */
int deterministicRefPrefix;
@@ -343,6 +345,22 @@ typedef enum {
ZSTDb_buffered
} ZSTD_buffered_policy_e;
/**
* Struct that contains all elements of block splitter that should be allocated
* in a wksp.
*/
#define ZSTD_MAX_NB_BLOCK_SPLITS 196
typedef struct {
seqStore_t fullSeqStoreChunk;
seqStore_t firstHalfSeqStore;
seqStore_t secondHalfSeqStore;
seqStore_t currSeqStore;
seqStore_t nextSeqStore;
U32 partitions[ZSTD_MAX_NB_BLOCK_SPLITS];
ZSTD_entropyCTablesMetadata_t entropyMetadata;
} ZSTD_blockSplitCtx;
struct ZSTD_CCtx_s {
ZSTD_compressionStage_e stage;
int cParamsChanged; /* == 1 if cParams(except wlog) or compression level are changed in requestedParams. Triggers transmission of new params to ZSTDMT (if available) then reset to 0. */
@@ -374,7 +392,7 @@ struct ZSTD_CCtx_s {
ZSTD_blockState_t blockState;
U32* entropyWorkspace; /* entropy workspace of ENTROPY_WORKSPACE_SIZE bytes */
/* Wether we are streaming or not */
/* Whether we are streaming or not */
ZSTD_buffered_policy_e bufferedPolicy;
/* streaming */
@@ -408,6 +426,9 @@ struct ZSTD_CCtx_s {
#if ZSTD_TRACE
ZSTD_TraceCtx traceCtx;
#endif
/* Workspace for block splitter */
ZSTD_blockSplitCtx blockSplitCtx;
};
typedef enum { ZSTD_dtlm_fast, ZSTD_dtlm_full } ZSTD_dictTableLoadMethod_e;
@@ -442,7 +463,7 @@ typedef enum {
typedef size_t (*ZSTD_blockCompressor) (
ZSTD_matchState_t* bs, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize);
ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, ZSTD_useRowMatchFinderMode_e rowMatchfinderMode, ZSTD_dictMode_e dictMode);
ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, ZSTD_paramSwitch_e rowMatchfinderMode, ZSTD_dictMode_e dictMode);
MEM_STATIC U32 ZSTD_LLcode(U32 litLength)
@@ -549,17 +570,17 @@ MEM_STATIC size_t ZSTD_minGain(size_t srcSize, ZSTD_strategy strat)
return (srcSize >> minlog) + 2;
}
MEM_STATIC int ZSTD_disableLiteralsCompression(const ZSTD_CCtx_params* cctxParams)
MEM_STATIC int ZSTD_literalsCompressionIsDisabled(const ZSTD_CCtx_params* cctxParams)
{
switch (cctxParams->literalCompressionMode) {
case ZSTD_lcm_huffman:
case ZSTD_ps_enable:
return 0;
case ZSTD_lcm_uncompressed:
case ZSTD_ps_disable:
return 1;
default:
assert(0 /* impossible: pre-validated */);
/* fall-through */
case ZSTD_lcm_auto:
ZSTD_FALLTHROUGH;
case ZSTD_ps_auto:
return (cctxParams->cParams.strategy == ZSTD_fast) && (cctxParams->cParams.targetLength > 0);
}
}
@@ -651,8 +672,14 @@ static unsigned ZSTD_NbCommonBytes (size_t val)
# if STATIC_BMI2
return _tzcnt_u64(val) >> 3;
# else
unsigned long r = 0;
return _BitScanForward64( &r, (U64)val ) ? (unsigned)(r >> 3) : 0;
if (val != 0) {
unsigned long r;
_BitScanForward64(&r, (U64)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return (__builtin_ctzll((U64)val) >> 3);
@@ -669,8 +696,14 @@ static unsigned ZSTD_NbCommonBytes (size_t val)
# endif
} else { /* 32 bits */
# if defined(_MSC_VER)
unsigned long r=0;
return _BitScanForward( &r, (U32)val ) ? (unsigned)(r >> 3) : 0;
if (val != 0) {
unsigned long r;
_BitScanForward(&r, (U32)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_ctz((U32)val) >> 3);
# else
@@ -687,8 +720,14 @@ static unsigned ZSTD_NbCommonBytes (size_t val)
# if STATIC_BMI2
return _lzcnt_u64(val) >> 3;
# else
unsigned long r = 0;
return _BitScanReverse64(&r, (U64)val) ? (unsigned)(r >> 3) : 0;
if (val != 0) {
unsigned long r;
_BitScanReverse64(&r, (U64)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# endif
# elif defined(__GNUC__) && (__GNUC__ >= 4)
return (__builtin_clzll(val) >> 3);
@@ -702,8 +741,14 @@ static unsigned ZSTD_NbCommonBytes (size_t val)
# endif
} else { /* 32 bits */
# if defined(_MSC_VER)
unsigned long r = 0;
return _BitScanReverse( &r, (unsigned long)val ) ? (unsigned)(r >> 3) : 0;
if (val != 0) {
unsigned long r;
_BitScanReverse(&r, (unsigned long)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_clz((U32)val) >> 3);
# else
@@ -884,9 +929,9 @@ MEM_STATIC void ZSTD_window_clear(ZSTD_window_t* window)
MEM_STATIC U32 ZSTD_window_isEmpty(ZSTD_window_t const window)
{
return window.dictLimit == 1 &&
window.lowLimit == 1 &&
(window.nextSrc - window.base) == 1;
return window.dictLimit == ZSTD_WINDOW_START_INDEX &&
window.lowLimit == ZSTD_WINDOW_START_INDEX &&
(window.nextSrc - window.base) == ZSTD_WINDOW_START_INDEX;
}
/**
@@ -937,7 +982,9 @@ MEM_STATIC U32 ZSTD_window_canOverflowCorrect(ZSTD_window_t const window,
{
U32 const cycleSize = 1u << cycleLog;
U32 const curr = (U32)((BYTE const*)src - window.base);
U32 const minIndexToOverflowCorrect = cycleSize + MAX(maxDist, cycleSize);
U32 const minIndexToOverflowCorrect = cycleSize
+ MAX(maxDist, cycleSize)
+ ZSTD_WINDOW_START_INDEX;
/* Adjust the min index to backoff the overflow correction frequency,
* so we don't waste too much CPU in overflow correction. If this
@@ -1012,10 +1059,14 @@ MEM_STATIC U32 ZSTD_window_correctOverflow(ZSTD_window_t* window, U32 cycleLog,
U32 const cycleSize = 1u << cycleLog;
U32 const cycleMask = cycleSize - 1;
U32 const curr = (U32)((BYTE const*)src - window->base);
U32 const currentCycle0 = curr & cycleMask;
/* Exclude zero so that newCurrent - maxDist >= 1. */
U32 const currentCycle1 = currentCycle0 == 0 ? cycleSize : currentCycle0;
U32 const newCurrent = currentCycle1 + MAX(maxDist, cycleSize);
U32 const currentCycle = curr & cycleMask;
/* Ensure newCurrent - maxDist >= ZSTD_WINDOW_START_INDEX. */
U32 const currentCycleCorrection = currentCycle < ZSTD_WINDOW_START_INDEX
? MAX(cycleSize, ZSTD_WINDOW_START_INDEX)
: 0;
U32 const newCurrent = currentCycle
+ currentCycleCorrection
+ MAX(maxDist, cycleSize);
U32 const correction = curr - newCurrent;
/* maxDist must be a power of two so that:
* (newCurrent & cycleMask) == (curr & cycleMask)
@@ -1031,14 +1082,20 @@ MEM_STATIC U32 ZSTD_window_correctOverflow(ZSTD_window_t* window, U32 cycleLog,
window->base += correction;
window->dictBase += correction;
if (window->lowLimit <= correction) window->lowLimit = 1;
else window->lowLimit -= correction;
if (window->dictLimit <= correction) window->dictLimit = 1;
else window->dictLimit -= correction;
if (window->lowLimit < correction + ZSTD_WINDOW_START_INDEX) {
window->lowLimit = ZSTD_WINDOW_START_INDEX;
} else {
window->lowLimit -= correction;
}
if (window->dictLimit < correction + ZSTD_WINDOW_START_INDEX) {
window->dictLimit = ZSTD_WINDOW_START_INDEX;
} else {
window->dictLimit -= correction;
}
/* Ensure we can still reference the full window. */
assert(newCurrent >= maxDist);
assert(newCurrent - maxDist >= 1);
assert(newCurrent - maxDist >= ZSTD_WINDOW_START_INDEX);
/* Ensure that lowLimit and dictLimit didn't underflow. */
assert(window->lowLimit <= newCurrent);
assert(window->dictLimit <= newCurrent);
@@ -1149,11 +1206,12 @@ ZSTD_checkDictValidity(const ZSTD_window_t* window,
MEM_STATIC void ZSTD_window_init(ZSTD_window_t* window) {
ZSTD_memset(window, 0, sizeof(*window));
window->base = (BYTE const*)"";
window->dictBase = (BYTE const*)"";
window->dictLimit = 1; /* start from 1, so that 1st position is valid */
window->lowLimit = 1; /* it ensures first and later CCtx usages compress the same */
window->nextSrc = window->base + 1; /* see issue #1241 */
window->base = (BYTE const*)" ";
window->dictBase = (BYTE const*)" ";
ZSTD_STATIC_ASSERT(ZSTD_DUBT_UNSORTED_MARK < ZSTD_WINDOW_START_INDEX); /* Start above ZSTD_DUBT_UNSORTED_MARK */
window->dictLimit = ZSTD_WINDOW_START_INDEX; /* start from >0, so that 1st position is valid */
window->lowLimit = ZSTD_WINDOW_START_INDEX; /* it ensures first and later CCtx usages compress the same */
window->nextSrc = window->base + ZSTD_WINDOW_START_INDEX; /* see issue #1241 */
window->nbOverflowCorrections = 0;
}
@@ -1206,15 +1264,15 @@ MEM_STATIC U32 ZSTD_window_update(ZSTD_window_t* window,
*/
MEM_STATIC U32 ZSTD_getLowestMatchIndex(const ZSTD_matchState_t* ms, U32 curr, unsigned windowLog)
{
U32 const maxDistance = 1U << windowLog;
U32 const lowestValid = ms->window.lowLimit;
U32 const withinWindow = (curr - lowestValid > maxDistance) ? curr - maxDistance : lowestValid;
U32 const isDictionary = (ms->loadedDictEnd != 0);
U32 const maxDistance = 1U << windowLog;
U32 const lowestValid = ms->window.lowLimit;
U32 const withinWindow = (curr - lowestValid > maxDistance) ? curr - maxDistance : lowestValid;
U32 const isDictionary = (ms->loadedDictEnd != 0);
/* When using a dictionary the entire dictionary is valid if a single byte of the dictionary
* is within the window. We invalidate the dictionary (and set loadedDictEnd to 0) when it isn't
* valid for the entire block. So this check is sufficient to find the lowest valid match index.
*/
U32 const matchLowest = isDictionary ? lowestValid : withinWindow;
U32 const matchLowest = isDictionary ? lowestValid : withinWindow;
return matchLowest;
}
lib/compress/zstd_compress_literals.c
+4 -3
View File
@@ -73,7 +73,8 @@ size_t ZSTD_compressLiterals (ZSTD_hufCTables_t const* prevHuf,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
void* entropyWorkspace, size_t entropyWorkspaceSize,
const int bmi2)
const int bmi2,
unsigned suspectUncompressible)
{
size_t const minGain = ZSTD_minGain(srcSize, strategy);
size_t const lhSize = 3 + (srcSize >= 1 KB) + (srcSize >= 16 KB);
@@ -105,11 +106,11 @@ size_t ZSTD_compressLiterals (ZSTD_hufCTables_t const* prevHuf,
HUF_compress1X_repeat(
ostart+lhSize, dstCapacity-lhSize, src, srcSize,
HUF_SYMBOLVALUE_MAX, HUF_TABLELOG_DEFAULT, entropyWorkspace, entropyWorkspaceSize,
(HUF_CElt*)nextHuf->CTable, &repeat, preferRepeat, bmi2) :
(HUF_CElt*)nextHuf->CTable, &repeat, preferRepeat, bmi2, suspectUncompressible) :
HUF_compress4X_repeat(
ostart+lhSize, dstCapacity-lhSize, src, srcSize,
HUF_SYMBOLVALUE_MAX, HUF_TABLELOG_DEFAULT, entropyWorkspace, entropyWorkspaceSize,
(HUF_CElt*)nextHuf->CTable, &repeat, preferRepeat, bmi2);
(HUF_CElt*)nextHuf->CTable, &repeat, preferRepeat, bmi2, suspectUncompressible);
if (repeat != HUF_repeat_none) {
/* reused the existing table */
DEBUGLOG(5, "Reusing previous huffman table");
lib/compress/zstd_compress_literals.h
+3 -1
View File
@@ -18,12 +18,14 @@ size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src,
size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize);
/* If suspectUncompressible then some sampling checks will be run to potentially skip huffman coding */
size_t ZSTD_compressLiterals (ZSTD_hufCTables_t const* prevHuf,
ZSTD_hufCTables_t* nextHuf,
ZSTD_strategy strategy, int disableLiteralCompression,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize,
void* entropyWorkspace, size_t entropyWorkspaceSize,
const int bmi2);
const int bmi2,
unsigned suspectUncompressible);
#endif /* ZSTD_COMPRESS_LITERALS_H */
lib/compress/zstd_compress_sequences.c
+5 -4
View File
@@ -275,10 +275,11 @@ ZSTD_buildCTable(void* dst, size_t dstCapacity,
assert(nbSeq_1 > 1);
assert(entropyWorkspaceSize >= sizeof(ZSTD_BuildCTableWksp));
(void)entropyWorkspaceSize;
FORWARD_IF_ERROR(FSE_normalizeCount(wksp->norm, tableLog, count, nbSeq_1, max, ZSTD_useLowProbCount(nbSeq_1)), "");
{ size_t const NCountSize = FSE_writeNCount(op, oend - op, wksp->norm, max, tableLog); /* overflow protected */
FORWARD_IF_ERROR(FSE_normalizeCount(wksp->norm, tableLog, count, nbSeq_1, max, ZSTD_useLowProbCount(nbSeq_1)), "FSE_normalizeCount failed");
assert(oend >= op);
{ size_t const NCountSize = FSE_writeNCount(op, (size_t)(oend - op), wksp->norm, max, tableLog); /* overflow protected */
FORWARD_IF_ERROR(NCountSize, "FSE_writeNCount failed");
FORWARD_IF_ERROR(FSE_buildCTable_wksp(nextCTable, wksp->norm, max, tableLog, wksp->wksp, sizeof(wksp->wksp)), "");
FORWARD_IF_ERROR(FSE_buildCTable_wksp(nextCTable, wksp->norm, max, tableLog, wksp->wksp, sizeof(wksp->wksp)), "FSE_buildCTable_wksp failed");
return NCountSize;
}
}
@@ -398,7 +399,7 @@ ZSTD_encodeSequences_default(
#if DYNAMIC_BMI2
static TARGET_ATTRIBUTE("bmi2") size_t
static BMI2_TARGET_ATTRIBUTE size_t
ZSTD_encodeSequences_bmi2(
void* dst, size_t dstCapacity,
FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
lib/compress/zstd_compress_superblock.c
+3 -2
View File
@@ -132,6 +132,7 @@ static size_t ZSTD_seqDecompressedSize(seqStore_t const* seqStore, const seqDef*
const seqDef* sp = sstart;
size_t matchLengthSum = 0;
size_t litLengthSum = 0;
(void)(litLengthSum); /* suppress unused variable warning on some environments */
while (send-sp > 0) {
ZSTD_sequenceLength const seqLen = ZSTD_getSequenceLength(seqStore, sp);
litLengthSum += seqLen.litLength;
@@ -324,7 +325,7 @@ static size_t ZSTD_estimateSubBlockSize_literal(const BYTE* literals, size_t lit
static size_t ZSTD_estimateSubBlockSize_symbolType(symbolEncodingType_e type,
const BYTE* codeTable, unsigned maxCode,
size_t nbSeq, const FSE_CTable* fseCTable,
const U32* additionalBits,
const U8* additionalBits,
short const* defaultNorm, U32 defaultNormLog, U32 defaultMax,
void* workspace, size_t wkspSize)
{
@@ -474,7 +475,7 @@ static size_t ZSTD_compressSubBlock_multi(const seqStore_t* seqStorePtr,
/* I think there is an optimization opportunity here.
* Calling ZSTD_estimateSubBlockSize for every sequence can be wasteful
* since it recalculates estimate from scratch.
* For example, it would recount literal distribution and symbol codes everytime.
* For example, it would recount literal distribution and symbol codes every time.
*/
cBlockSizeEstimate = ZSTD_estimateSubBlockSize(lp, litSize, ofCodePtr, llCodePtr, mlCodePtr, seqCount,
&nextCBlock->entropy, entropyMetadata,
lib/compress/zstd_cwksp.h
+3 -3
View File
@@ -219,7 +219,7 @@ MEM_STATIC size_t ZSTD_cwksp_aligned_alloc_size(size_t size) {
MEM_STATIC size_t ZSTD_cwksp_slack_space_required(void) {
/* For alignment, the wksp will always allocate an additional n_1=[1, 64] bytes
* to align the beginning of tables section, as well as another n_2=[0, 63] bytes
* to align the beginning of the aligned secion.
* to align the beginning of the aligned section.
*
* n_1 + n_2 == 64 bytes if the cwksp is freshly allocated, due to tables and
* aligneds being sized in multiples of 64 bytes.
@@ -422,8 +422,8 @@ MEM_STATIC void* ZSTD_cwksp_reserve_object(ZSTD_cwksp* ws, size_t bytes) {
DEBUGLOG(5,
"cwksp: reserving %p object %zd bytes (rounded to %zd), %zd bytes remaining",
alloc, bytes, roundedBytes, ZSTD_cwksp_available_space(ws) - roundedBytes);
assert(((size_t)alloc & (sizeof(void*)-1)) == 0);
assert((bytes & (sizeof(void*)-1)) == 0);
assert((size_t)alloc % ZSTD_ALIGNOF(void*) == 0);
assert(bytes % ZSTD_ALIGNOF(void*) == 0);
ZSTD_cwksp_assert_internal_consistency(ws);
/* we must be in the first phase, no advance is possible */
if (ws->phase != ZSTD_cwksp_alloc_objects || end > ws->workspaceEnd) {
lib/compress/zstd_double_fast.c
+289 -114
View File
@@ -48,10 +48,216 @@ void ZSTD_fillDoubleHashTable(ZSTD_matchState_t* ms,
FORCE_INLINE_TEMPLATE
size_t ZSTD_compressBlock_doubleFast_generic(
size_t ZSTD_compressBlock_doubleFast_noDict_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize, U32 const mls /* template */)
{
ZSTD_compressionParameters const* cParams = &ms->cParams;
U32* const hashLong = ms->hashTable;
const U32 hBitsL = cParams->hashLog;
U32* const hashSmall = ms->chainTable;
const U32 hBitsS = cParams->chainLog;
const BYTE* const base = ms->window.base;
const BYTE* const istart = (const BYTE*)src;
const BYTE* anchor = istart;
const U32 endIndex = (U32)((size_t)(istart - base) + srcSize);
/* presumes that, if there is a dictionary, it must be using Attach mode */
const U32 prefixLowestIndex = ZSTD_getLowestPrefixIndex(ms, endIndex, cParams->windowLog);
const BYTE* const prefixLowest = base + prefixLowestIndex;
const BYTE* const iend = istart + srcSize;
const BYTE* const ilimit = iend - HASH_READ_SIZE;
U32 offset_1=rep[0], offset_2=rep[1];
U32 offsetSaved = 0;
size_t mLength;
U32 offset;
U32 curr;
/* how many positions to search before increasing step size */
const size_t kStepIncr = 1 << kSearchStrength;
/* the position at which to increment the step size if no match is found */
const BYTE* nextStep;
size_t step; /* the current step size */
size_t hl0; /* the long hash at ip */
size_t hl1; /* the long hash at ip1 */
U32 idxl0; /* the long match index for ip */
U32 idxl1; /* the long match index for ip1 */
const BYTE* matchl0; /* the long match for ip */
const BYTE* matchs0; /* the short match for ip */
const BYTE* matchl1; /* the long match for ip1 */
const BYTE* ip = istart; /* the current position */
const BYTE* ip1; /* the next position */
DEBUGLOG(5, "ZSTD_compressBlock_doubleFast_noDict_generic");
/* init */
ip += ((ip - prefixLowest) == 0);
{
U32 const current = (U32)(ip - base);
U32 const windowLow = ZSTD_getLowestPrefixIndex(ms, current, cParams->windowLog);
U32 const maxRep = current - windowLow;
if (offset_2 > maxRep) offsetSaved = offset_2, offset_2 = 0;
if (offset_1 > maxRep) offsetSaved = offset_1, offset_1 = 0;
}
/* Outer Loop: one iteration per match found and stored */
while (1) {
step = 1;
nextStep = ip + kStepIncr;
ip1 = ip + step;
if (ip1 > ilimit) {
goto _cleanup;
}
hl0 = ZSTD_hashPtr(ip, hBitsL, 8);
idxl0 = hashLong[hl0];
matchl0 = base + idxl0;
/* Inner Loop: one iteration per search / position */
do {
const size_t hs0 = ZSTD_hashPtr(ip, hBitsS, mls);
const U32 idxs0 = hashSmall[hs0];
curr = (U32)(ip-base);
matchs0 = base + idxs0;
hashLong[hl0] = hashSmall[hs0] = curr; /* update hash tables */
/* check noDict repcode */
if ((offset_1 > 0) & (MEM_read32(ip+1-offset_1) == MEM_read32(ip+1))) {
mLength = ZSTD_count(ip+1+4, ip+1+4-offset_1, iend) + 4;
ip++;
ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, 0, mLength-MINMATCH);
goto _match_stored;
}
hl1 = ZSTD_hashPtr(ip1, hBitsL, 8);
if (idxl0 > prefixLowestIndex) {
/* check prefix long match */
if (MEM_read64(matchl0) == MEM_read64(ip)) {
mLength = ZSTD_count(ip+8, matchl0+8, iend) + 8;
offset = (U32)(ip-matchl0);
while (((ip>anchor) & (matchl0>prefixLowest)) && (ip[-1] == matchl0[-1])) { ip--; matchl0--; mLength++; } /* catch up */
goto _match_found;
}
}
idxl1 = hashLong[hl1];
matchl1 = base + idxl1;
if (idxs0 > prefixLowestIndex) {
/* check prefix short match */
if (MEM_read32(matchs0) == MEM_read32(ip)) {
goto _search_next_long;
}
}
if (ip1 >= nextStep) {
PREFETCH_L1(ip1 + 64);
PREFETCH_L1(ip1 + 128);
step++;
nextStep += kStepIncr;
}
ip = ip1;
ip1 += step;
hl0 = hl1;
idxl0 = idxl1;
matchl0 = matchl1;
#if defined(__aarch64__)
PREFETCH_L1(ip+256);
#endif
} while (ip1 <= ilimit);
_cleanup:
/* save reps for next block */
rep[0] = offset_1 ? offset_1 : offsetSaved;
rep[1] = offset_2 ? offset_2 : offsetSaved;
/* Return the last literals size */
return (size_t)(iend - anchor);
_search_next_long:
/* check prefix long +1 match */
if (idxl1 > prefixLowestIndex) {
if (MEM_read64(matchl1) == MEM_read64(ip1)) {
ip = ip1;
mLength = ZSTD_count(ip+8, matchl1+8, iend) + 8;
offset = (U32)(ip-matchl1);
while (((ip>anchor) & (matchl1>prefixLowest)) && (ip[-1] == matchl1[-1])) { ip--; matchl1--; mLength++; } /* catch up */
goto _match_found;
}
}
/* if no long +1 match, explore the short match we found */
mLength = ZSTD_count(ip+4, matchs0+4, iend) + 4;
offset = (U32)(ip - matchs0);
while (((ip>anchor) & (matchs0>prefixLowest)) && (ip[-1] == matchs0[-1])) { ip--; matchs0--; mLength++; } /* catch up */
/* fall-through */
_match_found: /* requires ip, offset, mLength */
offset_2 = offset_1;
offset_1 = offset;
if (step < 4) {
/* It is unsafe to write this value back to the hashtable when ip1 is
* greater than or equal to the new ip we will have after we're done
* processing this match. Rather than perform that test directly
* (ip1 >= ip + mLength), which costs speed in practice, we do a simpler
* more predictable test. The minmatch even if we take a short match is
* 4 bytes, so as long as step, the distance between ip and ip1
* (initially) is less than 4, we know ip1 < new ip. */
hashLong[hl1] = (U32)(ip1 - base);
}
ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, offset + ZSTD_REP_MOVE, mLength-MINMATCH);
_match_stored:
/* match found */
ip += mLength;
anchor = ip;
if (ip <= ilimit) {
/* Complementary insertion */
/* done after iLimit test, as candidates could be > iend-8 */
{ U32 const indexToInsert = curr+2;
hashLong[ZSTD_hashPtr(base+indexToInsert, hBitsL, 8)] = indexToInsert;
hashLong[ZSTD_hashPtr(ip-2, hBitsL, 8)] = (U32)(ip-2-base);
hashSmall[ZSTD_hashPtr(base+indexToInsert, hBitsS, mls)] = indexToInsert;
hashSmall[ZSTD_hashPtr(ip-1, hBitsS, mls)] = (U32)(ip-1-base);
}
/* check immediate repcode */
while ( (ip <= ilimit)
&& ( (offset_2>0)
& (MEM_read32(ip) == MEM_read32(ip - offset_2)) )) {
/* store sequence */
size_t const rLength = ZSTD_count(ip+4, ip+4-offset_2, iend) + 4;
U32 const tmpOff = offset_2; offset_2 = offset_1; offset_1 = tmpOff; /* swap offset_2 <=> offset_1 */
hashSmall[ZSTD_hashPtr(ip, hBitsS, mls)] = (U32)(ip-base);
hashLong[ZSTD_hashPtr(ip, hBitsL, 8)] = (U32)(ip-base);
ZSTD_storeSeq(seqStore, 0, anchor, iend, 0, rLength-MINMATCH);
ip += rLength;
anchor = ip;
continue; /* faster when present ... (?) */
}
}
}
}
FORCE_INLINE_TEMPLATE
size_t ZSTD_compressBlock_doubleFast_dictMatchState_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize,
U32 const mls /* template */, ZSTD_dictMode_e const dictMode)
U32 const mls /* template */)
{
ZSTD_compressionParameters const* cParams = &ms->cParams;
U32* const hashLong = ms->hashTable;
@@ -72,54 +278,30 @@ size_t ZSTD_compressBlock_doubleFast_generic(
U32 offsetSaved = 0;
const ZSTD_matchState_t* const dms = ms->dictMatchState;
const ZSTD_compressionParameters* const dictCParams =
dictMode == ZSTD_dictMatchState ?
&dms->cParams : NULL;
const U32* const dictHashLong = dictMode == ZSTD_dictMatchState ?
dms->hashTable : NULL;
const U32* const dictHashSmall = dictMode == ZSTD_dictMatchState ?
dms->chainTable : NULL;
const U32 dictStartIndex = dictMode == ZSTD_dictMatchState ?
dms->window.dictLimit : 0;
const BYTE* const dictBase = dictMode == ZSTD_dictMatchState ?
dms->window.base : NULL;
const BYTE* const dictStart = dictMode == ZSTD_dictMatchState ?
dictBase + dictStartIndex : NULL;
const BYTE* const dictEnd = dictMode == ZSTD_dictMatchState ?
dms->window.nextSrc : NULL;
const U32 dictIndexDelta = dictMode == ZSTD_dictMatchState ?
prefixLowestIndex - (U32)(dictEnd - dictBase) :
0;
const U32 dictHBitsL = dictMode == ZSTD_dictMatchState ?
dictCParams->hashLog : hBitsL;
const U32 dictHBitsS = dictMode == ZSTD_dictMatchState ?
dictCParams->chainLog : hBitsS;
const ZSTD_compressionParameters* const dictCParams = &dms->cParams;
const U32* const dictHashLong = dms->hashTable;
const U32* const dictHashSmall = dms->chainTable;
const U32 dictStartIndex = dms->window.dictLimit;
const BYTE* const dictBase = dms->window.base;
const BYTE* const dictStart = dictBase + dictStartIndex;
const BYTE* const dictEnd = dms->window.nextSrc;
const U32 dictIndexDelta = prefixLowestIndex - (U32)(dictEnd - dictBase);
const U32 dictHBitsL = dictCParams->hashLog;
const U32 dictHBitsS = dictCParams->chainLog;
const U32 dictAndPrefixLength = (U32)((ip - prefixLowest) + (dictEnd - dictStart));
DEBUGLOG(5, "ZSTD_compressBlock_doubleFast_generic");
assert(dictMode == ZSTD_noDict || dictMode == ZSTD_dictMatchState);
DEBUGLOG(5, "ZSTD_compressBlock_doubleFast_dictMatchState_generic");
/* if a dictionary is attached, it must be within window range */
if (dictMode == ZSTD_dictMatchState) {
assert(ms->window.dictLimit + (1U << cParams->windowLog) >= endIndex);
}
assert(ms->window.dictLimit + (1U << cParams->windowLog) >= endIndex);
/* init */
ip += (dictAndPrefixLength == 0);
if (dictMode == ZSTD_noDict) {
U32 const curr = (U32)(ip - base);
U32 const windowLow = ZSTD_getLowestPrefixIndex(ms, curr, cParams->windowLog);
U32 const maxRep = curr - windowLow;
if (offset_2 > maxRep) offsetSaved = offset_2, offset_2 = 0;
if (offset_1 > maxRep) offsetSaved = offset_1, offset_1 = 0;
}
if (dictMode == ZSTD_dictMatchState) {
/* dictMatchState repCode checks don't currently handle repCode == 0
* disabling. */
assert(offset_1 <= dictAndPrefixLength);
assert(offset_2 <= dictAndPrefixLength);
}
/* dictMatchState repCode checks don't currently handle repCode == 0
* disabling. */
assert(offset_1 <= dictAndPrefixLength);
assert(offset_2 <= dictAndPrefixLength);
/* Main Search Loop */
while (ip < ilimit) { /* < instead of <=, because repcode check at (ip+1) */
@@ -135,15 +317,13 @@ size_t ZSTD_compressBlock_doubleFast_generic(
const BYTE* matchLong = base + matchIndexL;
const BYTE* match = base + matchIndexS;
const U32 repIndex = curr + 1 - offset_1;
const BYTE* repMatch = (dictMode == ZSTD_dictMatchState
&& repIndex < prefixLowestIndex) ?
const BYTE* repMatch = (repIndex < prefixLowestIndex) ?
dictBase + (repIndex - dictIndexDelta) :
base + repIndex;
hashLong[h2] = hashSmall[h] = curr; /* update hash tables */
/* check dictMatchState repcode */
if (dictMode == ZSTD_dictMatchState
&& ((U32)((prefixLowestIndex-1) - repIndex) >= 3 /* intentional underflow */)
/* check repcode */
if (((U32)((prefixLowestIndex-1) - repIndex) >= 3 /* intentional underflow */)
&& (MEM_read32(repMatch) == MEM_read32(ip+1)) ) {
const BYTE* repMatchEnd = repIndex < prefixLowestIndex ? dictEnd : iend;
mLength = ZSTD_count_2segments(ip+1+4, repMatch+4, iend, repMatchEnd, prefixLowest) + 4;
@@ -152,15 +332,6 @@ size_t ZSTD_compressBlock_doubleFast_generic(
goto _match_stored;
}
/* check noDict repcode */
if ( dictMode == ZSTD_noDict
&& ((offset_1 > 0) & (MEM_read32(ip+1-offset_1) == MEM_read32(ip+1)))) {
mLength = ZSTD_count(ip+1+4, ip+1+4-offset_1, iend) + 4;
ip++;
ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, 0, mLength-MINMATCH);
goto _match_stored;
}
if (matchIndexL > prefixLowestIndex) {
/* check prefix long match */
if (MEM_read64(matchLong) == MEM_read64(ip)) {
@@ -169,7 +340,7 @@ size_t ZSTD_compressBlock_doubleFast_generic(
while (((ip>anchor) & (matchLong>prefixLowest)) && (ip[-1] == matchLong[-1])) { ip--; matchLong--; mLength++; } /* catch up */
goto _match_found;
}
} else if (dictMode == ZSTD_dictMatchState) {
} else {
/* check dictMatchState long match */
U32 const dictMatchIndexL = dictHashLong[dictHL];
const BYTE* dictMatchL = dictBase + dictMatchIndexL;
@@ -187,7 +358,7 @@ size_t ZSTD_compressBlock_doubleFast_generic(
if (MEM_read32(match) == MEM_read32(ip)) {
goto _search_next_long;
}
} else if (dictMode == ZSTD_dictMatchState) {
} else {
/* check dictMatchState short match */
U32 const dictMatchIndexS = dictHashSmall[dictHS];
match = dictBase + dictMatchIndexS;
@@ -220,7 +391,7 @@ _search_next_long:
while (((ip>anchor) & (matchL3>prefixLowest)) && (ip[-1] == matchL3[-1])) { ip--; matchL3--; mLength++; } /* catch up */
goto _match_found;
}
} else if (dictMode == ZSTD_dictMatchState) {
} else {
/* check dict long +1 match */
U32 const dictMatchIndexL3 = dictHashLong[dictHLNext];
const BYTE* dictMatchL3 = dictBase + dictMatchIndexL3;
@@ -234,7 +405,7 @@ _search_next_long:
} } }
/* if no long +1 match, explore the short match we found */
if (dictMode == ZSTD_dictMatchState && matchIndexS < prefixLowestIndex) {
if (matchIndexS < prefixLowestIndex) {
mLength = ZSTD_count_2segments(ip+4, match+4, iend, dictEnd, prefixLowest) + 4;
offset = (U32)(curr - matchIndexS);
while (((ip>anchor) & (match>dictStart)) && (ip[-1] == match[-1])) { ip--; match--; mLength++; } /* catch up */
@@ -244,8 +415,6 @@ _search_next_long:
while (((ip>anchor) & (match>prefixLowest)) && (ip[-1] == match[-1])) { ip--; match--; mLength++; } /* catch up */
}
/* fall-through */
_match_found:
offset_2 = offset_1;
offset_1 = offset;
@@ -268,43 +437,27 @@ _match_stored:
}
/* check immediate repcode */
if (dictMode == ZSTD_dictMatchState) {
while (ip <= ilimit) {
U32 const current2 = (U32)(ip-base);
U32 const repIndex2 = current2 - offset_2;
const BYTE* repMatch2 = dictMode == ZSTD_dictMatchState
&& repIndex2 < prefixLowestIndex ?
dictBase + repIndex2 - dictIndexDelta :
base + repIndex2;
if ( ((U32)((prefixLowestIndex-1) - (U32)repIndex2) >= 3 /* intentional overflow */)
&& (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
const BYTE* const repEnd2 = repIndex2 < prefixLowestIndex ? dictEnd : iend;
size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixLowest) + 4;
U32 tmpOffset = offset_2; offset_2 = offset_1; offset_1 = tmpOffset; /* swap offset_2 <=> offset_1 */
ZSTD_storeSeq(seqStore, 0, anchor, iend, 0, repLength2-MINMATCH);
hashSmall[ZSTD_hashPtr(ip, hBitsS, mls)] = current2;
hashLong[ZSTD_hashPtr(ip, hBitsL, 8)] = current2;
ip += repLength2;
anchor = ip;
continue;
}
break;
} }
if (dictMode == ZSTD_noDict) {
while ( (ip <= ilimit)
&& ( (offset_2>0)
& (MEM_read32(ip) == MEM_read32(ip - offset_2)) )) {
/* store sequence */
size_t const rLength = ZSTD_count(ip+4, ip+4-offset_2, iend) + 4;
U32 const tmpOff = offset_2; offset_2 = offset_1; offset_1 = tmpOff; /* swap offset_2 <=> offset_1 */
hashSmall[ZSTD_hashPtr(ip, hBitsS, mls)] = (U32)(ip-base);
hashLong[ZSTD_hashPtr(ip, hBitsL, 8)] = (U32)(ip-base);
ZSTD_storeSeq(seqStore, 0, anchor, iend, 0, rLength-MINMATCH);
ip += rLength;
while (ip <= ilimit) {
U32 const current2 = (U32)(ip-base);
U32 const repIndex2 = current2 - offset_2;
const BYTE* repMatch2 = repIndex2 < prefixLowestIndex ?
dictBase + repIndex2 - dictIndexDelta :
base + repIndex2;
if ( ((U32)((prefixLowestIndex-1) - (U32)repIndex2) >= 3 /* intentional overflow */)
&& (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
const BYTE* const repEnd2 = repIndex2 < prefixLowestIndex ? dictEnd : iend;
size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixLowest) + 4;
U32 tmpOffset = offset_2; offset_2 = offset_1; offset_1 = tmpOffset; /* swap offset_2 <=> offset_1 */
ZSTD_storeSeq(seqStore, 0, anchor, iend, 0, repLength2-MINMATCH);
hashSmall[ZSTD_hashPtr(ip, hBitsS, mls)] = current2;
hashLong[ZSTD_hashPtr(ip, hBitsL, 8)] = current2;
ip += repLength2;
anchor = ip;
continue; /* faster when present ... (?) */
} } }
continue;
}
break;
}
}
} /* while (ip < ilimit) */
/* save reps for next block */
@@ -315,6 +468,24 @@ _match_stored:
return (size_t)(iend - anchor);
}
#define ZSTD_GEN_DFAST_FN(dictMode, mls) \
static size_t ZSTD_compressBlock_doubleFast_##dictMode##_##mls( \
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM], \
void const* src, size_t srcSize) \
{ \
return ZSTD_compressBlock_doubleFast_##dictMode##_generic(ms, seqStore, rep, src, srcSize, mls); \
}
ZSTD_GEN_DFAST_FN(noDict, 4)
ZSTD_GEN_DFAST_FN(noDict, 5)
ZSTD_GEN_DFAST_FN(noDict, 6)
ZSTD_GEN_DFAST_FN(noDict, 7)
ZSTD_GEN_DFAST_FN(dictMatchState, 4)
ZSTD_GEN_DFAST_FN(dictMatchState, 5)
ZSTD_GEN_DFAST_FN(dictMatchState, 6)
ZSTD_GEN_DFAST_FN(dictMatchState, 7)
size_t ZSTD_compressBlock_doubleFast(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
@@ -325,13 +496,13 @@ size_t ZSTD_compressBlock_doubleFast(
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 4, ZSTD_noDict);
return ZSTD_compressBlock_doubleFast_noDict_4(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 5, ZSTD_noDict);
return ZSTD_compressBlock_doubleFast_noDict_5(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 6, ZSTD_noDict);
return ZSTD_compressBlock_doubleFast_noDict_6(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 7, ZSTD_noDict);
return ZSTD_compressBlock_doubleFast_noDict_7(ms, seqStore, rep, src, srcSize);
}
}
@@ -345,13 +516,13 @@ size_t ZSTD_compressBlock_doubleFast_dictMatchState(
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 4, ZSTD_dictMatchState);
return ZSTD_compressBlock_doubleFast_dictMatchState_4(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 5, ZSTD_dictMatchState);
return ZSTD_compressBlock_doubleFast_dictMatchState_5(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 6, ZSTD_dictMatchState);
return ZSTD_compressBlock_doubleFast_dictMatchState_6(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, 7, ZSTD_dictMatchState);
return ZSTD_compressBlock_doubleFast_dictMatchState_7(ms, seqStore, rep, src, srcSize);
}
}
@@ -387,7 +558,7 @@ static size_t ZSTD_compressBlock_doubleFast_extDict_generic(
/* if extDict is invalidated due to maxDistance, switch to "regular" variant */
if (prefixStartIndex == dictStartIndex)
return ZSTD_compressBlock_doubleFast_generic(ms, seqStore, rep, src, srcSize, mls, ZSTD_noDict);
return ZSTD_compressBlock_doubleFast(ms, seqStore, rep, src, srcSize);
/* Search Loop */
while (ip < ilimit) { /* < instead of <=, because (ip+1) */
@@ -409,7 +580,7 @@ static size_t ZSTD_compressBlock_doubleFast_extDict_generic(
hashSmall[hSmall] = hashLong[hLong] = curr; /* update hash table */
if ((((U32)((prefixStartIndex-1) - repIndex) >= 3) /* intentional underflow : ensure repIndex doesn't overlap dict + prefix */
& (offset_1 < curr+1 - dictStartIndex)) /* note: we are searching at curr+1 */
& (offset_1 <= curr+1 - dictStartIndex)) /* note: we are searching at curr+1 */
&& (MEM_read32(repMatch) == MEM_read32(ip+1)) ) {
const BYTE* repMatchEnd = repIndex < prefixStartIndex ? dictEnd : iend;
mLength = ZSTD_count_2segments(ip+1+4, repMatch+4, iend, repMatchEnd, prefixStart) + 4;
@@ -477,7 +648,7 @@ static size_t ZSTD_compressBlock_doubleFast_extDict_generic(
U32 const repIndex2 = current2 - offset_2;
const BYTE* repMatch2 = repIndex2 < prefixStartIndex ? dictBase + repIndex2 : base + repIndex2;
if ( (((U32)((prefixStartIndex-1) - repIndex2) >= 3) /* intentional overflow : ensure repIndex2 doesn't overlap dict + prefix */
& (offset_2 < current2 - dictStartIndex))
& (offset_2 <= current2 - dictStartIndex))
&& (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
const BYTE* const repEnd2 = repIndex2 < prefixStartIndex ? dictEnd : iend;
size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixStart) + 4;
@@ -500,6 +671,10 @@ static size_t ZSTD_compressBlock_doubleFast_extDict_generic(
return (size_t)(iend - anchor);
}
ZSTD_GEN_DFAST_FN(extDict, 4)
ZSTD_GEN_DFAST_FN(extDict, 5)
ZSTD_GEN_DFAST_FN(extDict, 6)
ZSTD_GEN_DFAST_FN(extDict, 7)
size_t ZSTD_compressBlock_doubleFast_extDict(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
@@ -510,12 +685,12 @@ size_t ZSTD_compressBlock_doubleFast_extDict(
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_doubleFast_extDict_generic(ms, seqStore, rep, src, srcSize, 4);
return ZSTD_compressBlock_doubleFast_extDict_4(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_doubleFast_extDict_generic(ms, seqStore, rep, src, srcSize, 5);
return ZSTD_compressBlock_doubleFast_extDict_5(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_doubleFast_extDict_generic(ms, seqStore, rep, src, srcSize, 6);
return ZSTD_compressBlock_doubleFast_extDict_6(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_doubleFast_extDict_generic(ms, seqStore, rep, src, srcSize, 7);
return ZSTD_compressBlock_doubleFast_extDict_7(ms, seqStore, rep, src, srcSize);
}
}
lib/compress/zstd_fast.c
+298 -119
View File
@@ -43,145 +43,294 @@ void ZSTD_fillHashTable(ZSTD_matchState_t* ms,
}
/**
* If you squint hard enough (and ignore repcodes), the search operation at any
* given position is broken into 4 stages:
*
* 1. Hash (map position to hash value via input read)
* 2. Lookup (map hash val to index via hashtable read)
* 3. Load (map index to value at that position via input read)
* 4. Compare
*
* Each of these steps involves a memory read at an address which is computed
* from the previous step. This means these steps must be sequenced and their
* latencies are cumulative.
*
* Rather than do 1->2->3->4 sequentially for a single position before moving
* onto the next, this implementation interleaves these operations across the
* next few positions:
*
* R = Repcode Read & Compare
* H = Hash
* T = Table Lookup
* M = Match Read & Compare
*
* Pos | Time -->
* ----+-------------------
* N | ... M
* N+1 | ... TM
* N+2 | R H T M
* N+3 | H TM
* N+4 | R H T M
* N+5 | H ...
* N+6 | R ...
*
* This is very much analogous to the pipelining of execution in a CPU. And just
* like a CPU, we have to dump the pipeline when we find a match (i.e., take a
* branch).
*
* When this happens, we throw away our current state, and do the following prep
* to re-enter the loop:
*
* Pos | Time -->
* ----+-------------------
* N | H T
* N+1 | H
*
* This is also the work we do at the beginning to enter the loop initially.
*/
FORCE_INLINE_TEMPLATE size_t
ZSTD_compressBlock_fast_generic(
ZSTD_compressBlock_fast_noDict_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize,
U32 const mls)
U32 const mls, U32 const hasStep)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
U32* const hashTable = ms->hashTable;
U32 const hlog = cParams->hashLog;
/* support stepSize of 0 */
size_t const stepSize = cParams->targetLength + !(cParams->targetLength) + 1;
size_t const stepSize = hasStep ? (cParams->targetLength + !(cParams->targetLength) + 1) : 2;
const BYTE* const base = ms->window.base;
const BYTE* const istart = (const BYTE*)src;
/* We check ip0 (ip + 0) and ip1 (ip + 1) each loop */
const BYTE* ip0 = istart;
const BYTE* ip1;
const BYTE* anchor = istart;
const U32 endIndex = (U32)((size_t)(istart - base) + srcSize);
const U32 prefixStartIndex = ZSTD_getLowestPrefixIndex(ms, endIndex, cParams->windowLog);
const BYTE* const prefixStart = base + prefixStartIndex;
const BYTE* const iend = istart + srcSize;
const BYTE* const ilimit = iend - HASH_READ_SIZE;
U32 offset_1=rep[0], offset_2=rep[1];
const BYTE* anchor = istart;
const BYTE* ip0 = istart;
const BYTE* ip1;
const BYTE* ip2;
const BYTE* ip3;
U32 current0;
U32 rep_offset1 = rep[0];
U32 rep_offset2 = rep[1];
U32 offsetSaved = 0;
/* init */
size_t hash0; /* hash for ip0 */
size_t hash1; /* hash for ip1 */
U32 idx; /* match idx for ip0 */
U32 mval; /* src value at match idx */
U32 offcode;
const BYTE* match0;
size_t mLength;
/* ip0 and ip1 are always adjacent. The targetLength skipping and
* uncompressibility acceleration is applied to every other position,
* matching the behavior of #1562. step therefore represents the gap
* between pairs of positions, from ip0 to ip2 or ip1 to ip3. */
size_t step;
const BYTE* nextStep;
const size_t kStepIncr = (1 << (kSearchStrength - 1));
DEBUGLOG(5, "ZSTD_compressBlock_fast_generic");
ip0 += (ip0 == prefixStart);
ip1 = ip0 + 1;
{ U32 const curr = (U32)(ip0 - base);
U32 const windowLow = ZSTD_getLowestPrefixIndex(ms, curr, cParams->windowLog);
U32 const maxRep = curr - windowLow;
if (offset_2 > maxRep) offsetSaved = offset_2, offset_2 = 0;
if (offset_1 > maxRep) offsetSaved = offset_1, offset_1 = 0;
if (rep_offset2 > maxRep) offsetSaved = rep_offset2, rep_offset2 = 0;
if (rep_offset1 > maxRep) offsetSaved = rep_offset1, rep_offset1 = 0;
}
/* Main Search Loop */
#ifdef __INTEL_COMPILER
/* From intel 'The vector pragma indicates that the loop should be
* vectorized if it is legal to do so'. Can be used together with
* #pragma ivdep (but have opted to exclude that because intel
* warns against using it).*/
#pragma vector always
#endif
while (ip1 < ilimit) { /* < instead of <=, because check at ip0+2 */
size_t mLength;
BYTE const* ip2 = ip0 + 2;
size_t const h0 = ZSTD_hashPtr(ip0, hlog, mls);
U32 const val0 = MEM_read32(ip0);
size_t const h1 = ZSTD_hashPtr(ip1, hlog, mls);
U32 const val1 = MEM_read32(ip1);
U32 const current0 = (U32)(ip0-base);
U32 const current1 = (U32)(ip1-base);
U32 const matchIndex0 = hashTable[h0];
U32 const matchIndex1 = hashTable[h1];
BYTE const* repMatch = ip2 - offset_1;
const BYTE* match0 = base + matchIndex0;
const BYTE* match1 = base + matchIndex1;
U32 offcode;
/* start each op */
_start: /* Requires: ip0 */
#if defined(__aarch64__)
PREFETCH_L1(ip0+256);
#endif
step = stepSize;
nextStep = ip0 + kStepIncr;
hashTable[h0] = current0; /* update hash table */
hashTable[h1] = current1; /* update hash table */
/* calculate positions, ip0 - anchor == 0, so we skip step calc */
ip1 = ip0 + 1;
ip2 = ip0 + step;
ip3 = ip2 + 1;
assert(ip0 + 1 == ip1);
if (ip3 >= ilimit) {
goto _cleanup;
}
if ((offset_1 > 0) & (MEM_read32(repMatch) == MEM_read32(ip2))) {
mLength = (ip2[-1] == repMatch[-1]) ? 1 : 0;
ip0 = ip2 - mLength;
match0 = repMatch - mLength;
mLength += 4;
hash0 = ZSTD_hashPtr(ip0, hlog, mls);
hash1 = ZSTD_hashPtr(ip1, hlog, mls);
idx = hashTable[hash0];
do {
/* load repcode match for ip[2]*/
const U32 rval = MEM_read32(ip2 - rep_offset1);
/* write back hash table entry */
current0 = (U32)(ip0 - base);
hashTable[hash0] = current0;
/* check repcode at ip[2] */
if ((MEM_read32(ip2) == rval) & (rep_offset1 > 0)) {
ip0 = ip2;
match0 = ip0 - rep_offset1;
mLength = ip0[-1] == match0[-1];
ip0 -= mLength;
match0 -= mLength;
offcode = 0;
mLength += 4;
goto _match;
}
if ((matchIndex0 > prefixStartIndex) && MEM_read32(match0) == val0) {
/* found a regular match */
/* load match for ip[0] */
if (idx >= prefixStartIndex) {
mval = MEM_read32(base + idx);
} else {
mval = MEM_read32(ip0) ^ 1; /* guaranteed to not match. */
}
/* check match at ip[0] */
if (MEM_read32(ip0) == mval) {
/* found a match! */
goto _offset;
}
if ((matchIndex1 > prefixStartIndex) && MEM_read32(match1) == val1) {
/* found a regular match after one literal */
ip0 = ip1;
match0 = match1;
/* lookup ip[1] */
idx = hashTable[hash1];
/* hash ip[2] */
hash0 = hash1;
hash1 = ZSTD_hashPtr(ip2, hlog, mls);
/* advance to next positions */
ip0 = ip1;
ip1 = ip2;
ip2 = ip3;
/* write back hash table entry */
current0 = (U32)(ip0 - base);
hashTable[hash0] = current0;
/* load match for ip[0] */
if (idx >= prefixStartIndex) {
mval = MEM_read32(base + idx);
} else {
mval = MEM_read32(ip0) ^ 1; /* guaranteed to not match. */
}
/* check match at ip[0] */
if (MEM_read32(ip0) == mval) {
/* found a match! */
goto _offset;
}
{ size_t const step = ((size_t)(ip0-anchor) >> (kSearchStrength - 1)) + stepSize;
assert(step >= 2);
ip0 += step;
ip1 += step;
continue;
/* lookup ip[1] */
idx = hashTable[hash1];
/* hash ip[2] */
hash0 = hash1;
hash1 = ZSTD_hashPtr(ip2, hlog, mls);
/* advance to next positions */
ip0 = ip1;
ip1 = ip2;
ip2 = ip0 + step;
ip3 = ip1 + step;
/* calculate step */
if (ip2 >= nextStep) {
step++;
PREFETCH_L1(ip1 + 64);
PREFETCH_L1(ip1 + 128);
nextStep += kStepIncr;
}
_offset: /* Requires: ip0, match0 */
/* Compute the offset code */
offset_2 = offset_1;
offset_1 = (U32)(ip0-match0);
offcode = offset_1 + ZSTD_REP_MOVE;
mLength = 4;
/* Count the backwards match length */
while (((ip0>anchor) & (match0>prefixStart))
&& (ip0[-1] == match0[-1])) { ip0--; match0--; mLength++; } /* catch up */
} while (ip3 < ilimit);
_match: /* Requires: ip0, match0, offcode */
/* Count the forward length */
mLength += ZSTD_count(ip0+mLength, match0+mLength, iend);
ZSTD_storeSeq(seqStore, (size_t)(ip0-anchor), anchor, iend, offcode, mLength-MINMATCH);
/* match found */
ip0 += mLength;
anchor = ip0;
if (ip0 <= ilimit) {
/* Fill Table */
assert(base+current0+2 > istart); /* check base overflow */
hashTable[ZSTD_hashPtr(base+current0+2, hlog, mls)] = current0+2; /* here because current+2 could be > iend-8 */
hashTable[ZSTD_hashPtr(ip0-2, hlog, mls)] = (U32)(ip0-2-base);
if (offset_2 > 0) { /* offset_2==0 means offset_2 is invalidated */
while ( (ip0 <= ilimit) && (MEM_read32(ip0) == MEM_read32(ip0 - offset_2)) ) {
/* store sequence */
size_t const rLength = ZSTD_count(ip0+4, ip0+4-offset_2, iend) + 4;
{ U32 const tmpOff = offset_2; offset_2 = offset_1; offset_1 = tmpOff; } /* swap offset_2 <=> offset_1 */
hashTable[ZSTD_hashPtr(ip0, hlog, mls)] = (U32)(ip0-base);
ip0 += rLength;
ZSTD_storeSeq(seqStore, 0 /*litLen*/, anchor, iend, 0 /*offCode*/, rLength-MINMATCH);
anchor = ip0;
continue; /* faster when present (confirmed on gcc-8) ... (?) */
} } }
ip1 = ip0 + 1;
}
_cleanup:
/* Note that there are probably still a couple positions we could search.
* However, it seems to be a meaningful performance hit to try to search
* them. So let's not. */
/* save reps for next block */
rep[0] = offset_1 ? offset_1 : offsetSaved;
rep[1] = offset_2 ? offset_2 : offsetSaved;
rep[0] = rep_offset1 ? rep_offset1 : offsetSaved;
rep[1] = rep_offset2 ? rep_offset2 : offsetSaved;
/* Return the last literals size */
return (size_t)(iend - anchor);
_offset: /* Requires: ip0, idx */
/* Compute the offset code. */
match0 = base + idx;
rep_offset2 = rep_offset1;
rep_offset1 = (U32)(ip0-match0);
offcode = rep_offset1 + ZSTD_REP_MOVE;
mLength = 4;
/* Count the backwards match length. */
while (((ip0>anchor) & (match0>prefixStart)) && (ip0[-1] == match0[-1])) {
ip0--;
match0--;
mLength++;
}
_match: /* Requires: ip0, match0, offcode */
/* Count the forward length. */
mLength += ZSTD_count(ip0 + mLength, match0 + mLength, iend);
ZSTD_storeSeq(seqStore, (size_t)(ip0 - anchor), anchor, iend, offcode, mLength - MINMATCH);
ip0 += mLength;
anchor = ip0;
/* write next hash table entry */
if (ip1 < ip0) {
hashTable[hash1] = (U32)(ip1 - base);
}
/* Fill table and check for immediate repcode. */
if (ip0 <= ilimit) {
/* Fill Table */
assert(base+current0+2 > istart); /* check base overflow */
hashTable[ZSTD_hashPtr(base+current0+2, hlog, mls)] = current0+2; /* here because current+2 could be > iend-8 */
hashTable[ZSTD_hashPtr(ip0-2, hlog, mls)] = (U32)(ip0-2-base);
if (rep_offset2 > 0) { /* rep_offset2==0 means rep_offset2 is invalidated */
while ( (ip0 <= ilimit) && (MEM_read32(ip0) == MEM_read32(ip0 - rep_offset2)) ) {
/* store sequence */
size_t const rLength = ZSTD_count(ip0+4, ip0+4-rep_offset2, iend) + 4;
{ U32 const tmpOff = rep_offset2; rep_offset2 = rep_offset1; rep_offset1 = tmpOff; } /* swap rep_offset2 <=> rep_offset1 */
hashTable[ZSTD_hashPtr(ip0, hlog, mls)] = (U32)(ip0-base);
ip0 += rLength;
ZSTD_storeSeq(seqStore, 0 /*litLen*/, anchor, iend, 0 /*offCode*/, rLength-MINMATCH);
anchor = ip0;
continue; /* faster when present (confirmed on gcc-8) ... (?) */
} } }
goto _start;
}
#define ZSTD_GEN_FAST_FN(dictMode, mls, step) \
static size_t ZSTD_compressBlock_fast_##dictMode##_##mls##_##step( \
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM], \
void const* src, size_t srcSize) \
{ \
return ZSTD_compressBlock_fast_##dictMode##_generic(ms, seqStore, rep, src, srcSize, mls, step); \
}
ZSTD_GEN_FAST_FN(noDict, 4, 1)
ZSTD_GEN_FAST_FN(noDict, 5, 1)
ZSTD_GEN_FAST_FN(noDict, 6, 1)
ZSTD_GEN_FAST_FN(noDict, 7, 1)
ZSTD_GEN_FAST_FN(noDict, 4, 0)
ZSTD_GEN_FAST_FN(noDict, 5, 0)
ZSTD_GEN_FAST_FN(noDict, 6, 0)
ZSTD_GEN_FAST_FN(noDict, 7, 0)
size_t ZSTD_compressBlock_fast(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
@@ -189,24 +338,40 @@ size_t ZSTD_compressBlock_fast(
{
U32 const mls = ms->cParams.minMatch;
assert(ms->dictMatchState == NULL);
switch(mls)
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 4);
case 5 :
return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 5);
case 6 :
return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 6);
case 7 :
return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 7);
if (ms->cParams.targetLength > 1) {
switch(mls)
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_fast_noDict_4_1(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_fast_noDict_5_1(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_fast_noDict_6_1(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_fast_noDict_7_1(ms, seqStore, rep, src, srcSize);
}
} else {
switch(mls)
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_fast_noDict_4_0(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_fast_noDict_5_0(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_fast_noDict_6_0(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_fast_noDict_7_0(ms, seqStore, rep, src, srcSize);
}
}
}
FORCE_INLINE_TEMPLATE
size_t ZSTD_compressBlock_fast_dictMatchState_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize, U32 const mls)
void const* src, size_t srcSize, U32 const mls, U32 const hasStep)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
U32* const hashTable = ms->hashTable;
@@ -242,6 +407,8 @@ size_t ZSTD_compressBlock_fast_dictMatchState_generic(
assert(endIndex - prefixStartIndex <= maxDistance);
(void)maxDistance; (void)endIndex; /* these variables are not used when assert() is disabled */
(void)hasStep; /* not currently specialized on whether it's accelerated */
/* ensure there will be no underflow
* when translating a dict index into a local index */
assert(prefixStartIndex >= (U32)(dictEnd - dictBase));
@@ -351,6 +518,12 @@ size_t ZSTD_compressBlock_fast_dictMatchState_generic(
return (size_t)(iend - anchor);
}
ZSTD_GEN_FAST_FN(dictMatchState, 4, 0)
ZSTD_GEN_FAST_FN(dictMatchState, 5, 0)
ZSTD_GEN_FAST_FN(dictMatchState, 6, 0)
ZSTD_GEN_FAST_FN(dictMatchState, 7, 0)
size_t ZSTD_compressBlock_fast_dictMatchState(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize)
@@ -361,20 +534,20 @@ size_t ZSTD_compressBlock_fast_dictMatchState(
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 4);
return ZSTD_compressBlock_fast_dictMatchState_4_0(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 5);
return ZSTD_compressBlock_fast_dictMatchState_5_0(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 6);
return ZSTD_compressBlock_fast_dictMatchState_6_0(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 7);
return ZSTD_compressBlock_fast_dictMatchState_7_0(ms, seqStore, rep, src, srcSize);
}
}
static size_t ZSTD_compressBlock_fast_extDict_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
void const* src, size_t srcSize, U32 const mls)
void const* src, size_t srcSize, U32 const mls, U32 const hasStep)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
U32* const hashTable = ms->hashTable;
@@ -398,11 +571,13 @@ static size_t ZSTD_compressBlock_fast_extDict_generic(
const BYTE* const ilimit = iend - 8;
U32 offset_1=rep[0], offset_2=rep[1];
(void)hasStep; /* not currently specialized on whether it's accelerated */
DEBUGLOG(5, "ZSTD_compressBlock_fast_extDict_generic (offset_1=%u)", offset_1);
/* switch to "regular" variant if extDict is invalidated due to maxDistance */
if (prefixStartIndex == dictStartIndex)
return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, mls);
return ZSTD_compressBlock_fast(ms, seqStore, rep, src, srcSize);
/* Search Loop */
while (ip < ilimit) { /* < instead of <=, because (ip+1) */
@@ -418,7 +593,7 @@ static size_t ZSTD_compressBlock_fast_extDict_generic(
DEBUGLOG(7, "offset_1 = %u , curr = %u", offset_1, curr);
if ( ( ((U32)((prefixStartIndex-1) - repIndex) >= 3) /* intentional underflow */
& (offset_1 < curr+1 - dictStartIndex) ) /* note: we are searching at curr+1 */
& (offset_1 <= curr+1 - dictStartIndex) ) /* note: we are searching at curr+1 */
&& (MEM_read32(repMatch) == MEM_read32(ip+1)) ) {
const BYTE* const repMatchEnd = repIndex < prefixStartIndex ? dictEnd : iend;
size_t const rLength = ZSTD_count_2segments(ip+1 +4, repMatch +4, iend, repMatchEnd, prefixStart) + 4;
@@ -453,7 +628,7 @@ static size_t ZSTD_compressBlock_fast_extDict_generic(
U32 const current2 = (U32)(ip-base);
U32 const repIndex2 = current2 - offset_2;
const BYTE* const repMatch2 = repIndex2 < prefixStartIndex ? dictBase + repIndex2 : base + repIndex2;
if ( (((U32)((prefixStartIndex-1) - repIndex2) >= 3) & (offset_2 < curr - dictStartIndex)) /* intentional overflow */
if ( (((U32)((prefixStartIndex-1) - repIndex2) >= 3) & (offset_2 <= curr - dictStartIndex)) /* intentional overflow */
&& (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
const BYTE* const repEnd2 = repIndex2 < prefixStartIndex ? dictEnd : iend;
size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixStart) + 4;
@@ -475,6 +650,10 @@ static size_t ZSTD_compressBlock_fast_extDict_generic(
return (size_t)(iend - anchor);
}
ZSTD_GEN_FAST_FN(extDict, 4, 0)
ZSTD_GEN_FAST_FN(extDict, 5, 0)
ZSTD_GEN_FAST_FN(extDict, 6, 0)
ZSTD_GEN_FAST_FN(extDict, 7, 0)
size_t ZSTD_compressBlock_fast_extDict(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
@@ -485,12 +664,12 @@ size_t ZSTD_compressBlock_fast_extDict(
{
default: /* includes case 3 */
case 4 :
return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 4);
return ZSTD_compressBlock_fast_extDict_4_0(ms, seqStore, rep, src, srcSize);
case 5 :
return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 5);
return ZSTD_compressBlock_fast_extDict_5_0(ms, seqStore, rep, src, srcSize);
case 6 :
return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 6);
return ZSTD_compressBlock_fast_extDict_6_0(ms, seqStore, rep, src, srcSize);
case 7 :
return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 7);
return ZSTD_compressBlock_fast_extDict_7_0(ms, seqStore, rep, src, srcSize);
}
}
lib/compress/zstd_lazy.c
+422 -506
View File
@@ -61,7 +61,7 @@ ZSTD_updateDUBT(ZSTD_matchState_t* ms,
* assumption : curr >= btlow == (curr - btmask)
* doesn't fail */
static void
ZSTD_insertDUBT1(ZSTD_matchState_t* ms,
ZSTD_insertDUBT1(const ZSTD_matchState_t* ms,
U32 curr, const BYTE* inputEnd,
U32 nbCompares, U32 btLow,
const ZSTD_dictMode_e dictMode)
@@ -93,7 +93,7 @@ ZSTD_insertDUBT1(ZSTD_matchState_t* ms,
assert(curr >= btLow);
assert(ip < iend); /* condition for ZSTD_count */
while (nbCompares-- && (matchIndex > windowLow)) {
for (; nbCompares && (matchIndex > windowLow); --nbCompares) {
U32* const nextPtr = bt + 2*(matchIndex & btMask);
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
assert(matchIndex < curr);
@@ -151,7 +151,7 @@ ZSTD_insertDUBT1(ZSTD_matchState_t* ms,
static size_t
ZSTD_DUBT_findBetterDictMatch (
ZSTD_matchState_t* ms,
const ZSTD_matchState_t* ms,
const BYTE* const ip, const BYTE* const iend,
size_t* offsetPtr,
size_t bestLength,
@@ -185,7 +185,7 @@ ZSTD_DUBT_findBetterDictMatch (
(void)dictMode;
assert(dictMode == ZSTD_dictMatchState);
while (nbCompares-- && (dictMatchIndex > dictLowLimit)) {
for (; nbCompares && (dictMatchIndex > dictLowLimit); --nbCompares) {
U32* const nextPtr = dictBt + 2*(dictMatchIndex & btMask);
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
const BYTE* match = dictBase + dictMatchIndex;
@@ -309,7 +309,7 @@ ZSTD_DUBT_findBestMatch(ZSTD_matchState_t* ms,
matchIndex = hashTable[h];
hashTable[h] = curr; /* Update Hash Table */
while (nbCompares-- && (matchIndex > windowLow)) {
for (; nbCompares && (matchIndex > windowLow); --nbCompares) {
U32* const nextPtr = bt + 2*(matchIndex & btMask);
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
const BYTE* match;
@@ -357,6 +357,7 @@ ZSTD_DUBT_findBestMatch(ZSTD_matchState_t* ms,
*smallerPtr = *largerPtr = 0;
assert(nbCompares <= (1U << ZSTD_SEARCHLOG_MAX)); /* Check we haven't underflowed. */
if (dictMode == ZSTD_dictMatchState && nbCompares) {
bestLength = ZSTD_DUBT_findBetterDictMatch(
ms, ip, iend,
@@ -390,54 +391,6 @@ ZSTD_BtFindBestMatch( ZSTD_matchState_t* ms,
return ZSTD_DUBT_findBestMatch(ms, ip, iLimit, offsetPtr, mls, dictMode);
}
static size_t
ZSTD_BtFindBestMatch_selectMLS ( ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 4, ZSTD_noDict);
case 5 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 5, ZSTD_noDict);
case 7 :
case 6 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 6, ZSTD_noDict);
}
}
static size_t ZSTD_BtFindBestMatch_dictMatchState_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 4, ZSTD_dictMatchState);
case 5 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 5, ZSTD_dictMatchState);
case 7 :
case 6 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 6, ZSTD_dictMatchState);
}
}
static size_t ZSTD_BtFindBestMatch_extDict_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 4, ZSTD_extDict);
case 5 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 5, ZSTD_extDict);
case 7 :
case 6 : return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, 6, ZSTD_extDict);
}
}
/***********************************
* Dedicated dict search
***********************************/
@@ -450,7 +403,7 @@ void ZSTD_dedicatedDictSearch_lazy_loadDictionary(ZSTD_matchState_t* ms, const B
U32* const chainTable = ms->chainTable;
U32 const chainSize = 1 << ms->cParams.chainLog;
U32 idx = ms->nextToUpdate;
U32 const minChain = chainSize < target ? target - chainSize : idx;
U32 const minChain = chainSize < target - idx ? target - chainSize : idx;
U32 const bucketSize = 1 << ZSTD_LAZY_DDSS_BUCKET_LOG;
U32 const cacheSize = bucketSize - 1;
U32 const chainAttempts = (1 << ms->cParams.searchLog) - cacheSize;
@@ -464,7 +417,7 @@ void ZSTD_dedicatedDictSearch_lazy_loadDictionary(ZSTD_matchState_t* ms, const B
U32 const hashLog = ms->cParams.hashLog - ZSTD_LAZY_DDSS_BUCKET_LOG;
U32* const tmpHashTable = hashTable;
U32* const tmpChainTable = hashTable + ((size_t)1 << hashLog);
U32 const tmpChainSize = ((1 << ZSTD_LAZY_DDSS_BUCKET_LOG) - 1) << hashLog;
U32 const tmpChainSize = (U32)((1 << ZSTD_LAZY_DDSS_BUCKET_LOG) - 1) << hashLog;
U32 const tmpMinChain = tmpChainSize < target ? target - tmpChainSize : idx;
U32 hashIdx;
@@ -692,7 +645,7 @@ U32 ZSTD_insertAndFindFirstIndex(ZSTD_matchState_t* ms, const BYTE* ip) {
/* inlining is important to hardwire a hot branch (template emulation) */
FORCE_INLINE_TEMPLATE
size_t ZSTD_HcFindBestMatch_generic (
size_t ZSTD_HcFindBestMatch(
ZSTD_matchState_t* ms,
const BYTE* const ip, const BYTE* const iLimit,
size_t* offsetPtr,
@@ -758,6 +711,7 @@ size_t ZSTD_HcFindBestMatch_generic (
matchIndex = NEXT_IN_CHAIN(matchIndex, chainMask);
}
assert(nbAttempts <= (1U << ZSTD_SEARCHLOG_MAX)); /* Check we haven't underflowed. */
if (dictMode == ZSTD_dedicatedDictSearch) {
ml = ZSTD_dedicatedDictSearch_lazy_search(offsetPtr, ml, nbAttempts, dms,
ip, iLimit, prefixStart, curr, dictLimit, ddsIdx);
@@ -797,310 +751,80 @@ size_t ZSTD_HcFindBestMatch_generic (
return ml;
}
FORCE_INLINE_TEMPLATE size_t ZSTD_HcFindBestMatch_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 4, ZSTD_noDict);
case 5 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 5, ZSTD_noDict);
case 7 :
case 6 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 6, ZSTD_noDict);
}
}
static size_t ZSTD_HcFindBestMatch_dictMatchState_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 4, ZSTD_dictMatchState);
case 5 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 5, ZSTD_dictMatchState);
case 7 :
case 6 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 6, ZSTD_dictMatchState);
}
}
static size_t ZSTD_HcFindBestMatch_dedicatedDictSearch_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 4, ZSTD_dedicatedDictSearch);
case 5 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 5, ZSTD_dedicatedDictSearch);
case 7 :
case 6 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 6, ZSTD_dedicatedDictSearch);
}
}
FORCE_INLINE_TEMPLATE size_t ZSTD_HcFindBestMatch_extDict_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 4, ZSTD_extDict);
case 5 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 5, ZSTD_extDict);
case 7 :
case 6 : return ZSTD_HcFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 6, ZSTD_extDict);
}
}
/* *********************************
* (SIMD) Row-based matchfinder
***********************************/
/* Constants for row-based hash */
#define ZSTD_ROW_HASH_TAG_OFFSET 1 /* byte offset of hashes in the match state's tagTable from the beginning of a row */
#define ZSTD_ROW_HASH_TAG_BITS 8 /* nb bits to use for the tag */
#define ZSTD_ROW_HASH_TAG_OFFSET 16 /* byte offset of hashes in the match state's tagTable from the beginning of a row */
#define ZSTD_ROW_HASH_TAG_BITS 8 /* nb bits to use for the tag */
#define ZSTD_ROW_HASH_TAG_MASK ((1u << ZSTD_ROW_HASH_TAG_BITS) - 1)
#define ZSTD_ROW_HASH_MAX_ENTRIES 64 /* absolute maximum number of entries per row, for all configurations */
#define ZSTD_ROW_HASH_CACHE_MASK (ZSTD_ROW_HASH_CACHE_SIZE - 1)
typedef U32 ZSTD_VecMask; /* Clarifies when we are interacting with a U32 representing a mask of matches */
#if !defined(ZSTD_NO_INTRINSICS) && defined(__SSE2__) /* SIMD SSE version */
#include <emmintrin.h>
typedef __m128i ZSTD_Vec128;
/* Returns a 128-bit container with 128-bits from src */
static ZSTD_Vec128 ZSTD_Vec128_read(const void* const src) {
return _mm_loadu_si128((ZSTD_Vec128 const*)src);
}
/* Returns a ZSTD_Vec128 with the byte "val" packed 16 times */
static ZSTD_Vec128 ZSTD_Vec128_set8(BYTE val) {
return _mm_set1_epi8((char)val);
}
/* Do byte-by-byte comparison result of x and y. Then collapse 128-bit resultant mask
* into a 32-bit mask that is the MSB of each byte.
* */
static ZSTD_VecMask ZSTD_Vec128_cmpMask8(ZSTD_Vec128 x, ZSTD_Vec128 y) {
return (ZSTD_VecMask)_mm_movemask_epi8(_mm_cmpeq_epi8(x, y));
}
typedef struct {
__m128i fst;
__m128i snd;
} ZSTD_Vec256;
static ZSTD_Vec256 ZSTD_Vec256_read(const void* const ptr) {
ZSTD_Vec256 v;
v.fst = ZSTD_Vec128_read(ptr);
v.snd = ZSTD_Vec128_read((ZSTD_Vec128 const*)ptr + 1);
return v;
}
static ZSTD_Vec256 ZSTD_Vec256_set8(BYTE val) {
ZSTD_Vec256 v;
v.fst = ZSTD_Vec128_set8(val);
v.snd = ZSTD_Vec128_set8(val);
return v;
}
static ZSTD_VecMask ZSTD_Vec256_cmpMask8(ZSTD_Vec256 x, ZSTD_Vec256 y) {
ZSTD_VecMask fstMask;
ZSTD_VecMask sndMask;
fstMask = ZSTD_Vec128_cmpMask8(x.fst, y.fst);
sndMask = ZSTD_Vec128_cmpMask8(x.snd, y.snd);
return fstMask | (sndMask << 16);
}
#elif !defined(ZSTD_NO_INTRINSICS) && defined(__ARM_NEON) /* SIMD ARM NEON Version */
#include <arm_neon.h>
typedef uint8x16_t ZSTD_Vec128;
static ZSTD_Vec128 ZSTD_Vec128_read(const void* const src) {
return vld1q_u8((const BYTE* const)src);
}
static ZSTD_Vec128 ZSTD_Vec128_set8(BYTE val) {
return vdupq_n_u8(val);
}
/* Mimics '_mm_movemask_epi8()' from SSE */
static U32 ZSTD_vmovmaskq_u8(ZSTD_Vec128 val) {
/* Shift out everything but the MSB bits in each byte */
uint16x8_t highBits = vreinterpretq_u16_u8(vshrq_n_u8(val, 7));
/* Merge the even lanes together with vsra (right shift and add) */
uint32x4_t paired16 = vreinterpretq_u32_u16(vsraq_n_u16(highBits, highBits, 7));
uint64x2_t paired32 = vreinterpretq_u64_u32(vsraq_n_u32(paired16, paired16, 14));
uint8x16_t paired64 = vreinterpretq_u8_u64(vsraq_n_u64(paired32, paired32, 28));
/* Extract the low 8 bits from each lane, merge */
return vgetq_lane_u8(paired64, 0) | ((U32)vgetq_lane_u8(paired64, 8) << 8);
}
static ZSTD_VecMask ZSTD_Vec128_cmpMask8(ZSTD_Vec128 x, ZSTD_Vec128 y) {
return (ZSTD_VecMask)ZSTD_vmovmaskq_u8(vceqq_u8(x, y));
}
typedef struct {
uint8x16_t fst;
uint8x16_t snd;
} ZSTD_Vec256;
static ZSTD_Vec256 ZSTD_Vec256_read(const void* const ptr) {
ZSTD_Vec256 v;
v.fst = ZSTD_Vec128_read(ptr);
v.snd = ZSTD_Vec128_read((ZSTD_Vec128 const*)ptr + 1);
return v;
}
static ZSTD_Vec256 ZSTD_Vec256_set8(BYTE val) {
ZSTD_Vec256 v;
v.fst = ZSTD_Vec128_set8(val);
v.snd = ZSTD_Vec128_set8(val);
return v;
}
static ZSTD_VecMask ZSTD_Vec256_cmpMask8(ZSTD_Vec256 x, ZSTD_Vec256 y) {
ZSTD_VecMask fstMask;
ZSTD_VecMask sndMask;
fstMask = ZSTD_Vec128_cmpMask8(x.fst, y.fst);
sndMask = ZSTD_Vec128_cmpMask8(x.snd, y.snd);
return fstMask | (sndMask << 16);
}
#else /* Scalar fallback version */
#define VEC128_NB_SIZE_T (16 / sizeof(size_t))
typedef struct {
size_t vec[VEC128_NB_SIZE_T];
} ZSTD_Vec128;
static ZSTD_Vec128 ZSTD_Vec128_read(const void* const src) {
ZSTD_Vec128 ret;
ZSTD_memcpy(ret.vec, src, VEC128_NB_SIZE_T*sizeof(size_t));
return ret;
}
static ZSTD_Vec128 ZSTD_Vec128_set8(BYTE val) {
ZSTD_Vec128 ret = { {0} };
int startBit = sizeof(size_t) * 8 - 8;
for (;startBit >= 0; startBit -= 8) {
unsigned j = 0;
for (;j < VEC128_NB_SIZE_T; ++j) {
ret.vec[j] |= ((size_t)val << startBit);
}
}
return ret;
}
/* Compare x to y, byte by byte, generating a "matches" bitfield */
static ZSTD_VecMask ZSTD_Vec128_cmpMask8(ZSTD_Vec128 x, ZSTD_Vec128 y) {
ZSTD_VecMask res = 0;
unsigned i = 0;
unsigned l = 0;
for (; i < VEC128_NB_SIZE_T; ++i) {
const size_t cmp1 = x.vec[i];
const size_t cmp2 = y.vec[i];
unsigned j = 0;
for (; j < sizeof(size_t); ++j, ++l) {
if (((cmp1 >> j*8) & 0xFF) == ((cmp2 >> j*8) & 0xFF)) {
res |= ((U32)1 << (j+i*sizeof(size_t)));
}
}
}
return res;
}
#define VEC256_NB_SIZE_T 2*VEC128_NB_SIZE_T
typedef struct {
size_t vec[VEC256_NB_SIZE_T];
} ZSTD_Vec256;
static ZSTD_Vec256 ZSTD_Vec256_read(const void* const src) {
ZSTD_Vec256 ret;
ZSTD_memcpy(ret.vec, src, VEC256_NB_SIZE_T*sizeof(size_t));
return ret;
}
static ZSTD_Vec256 ZSTD_Vec256_set8(BYTE val) {
ZSTD_Vec256 ret = { {0} };
int startBit = sizeof(size_t) * 8 - 8;
for (;startBit >= 0; startBit -= 8) {
unsigned j = 0;
for (;j < VEC256_NB_SIZE_T; ++j) {
ret.vec[j] |= ((size_t)val << startBit);
}
}
return ret;
}
/* Compare x to y, byte by byte, generating a "matches" bitfield */
static ZSTD_VecMask ZSTD_Vec256_cmpMask8(ZSTD_Vec256 x, ZSTD_Vec256 y) {
ZSTD_VecMask res = 0;
unsigned i = 0;
unsigned l = 0;
for (; i < VEC256_NB_SIZE_T; ++i) {
const size_t cmp1 = x.vec[i];
const size_t cmp2 = y.vec[i];
unsigned j = 0;
for (; j < sizeof(size_t); ++j, ++l) {
if (((cmp1 >> j*8) & 0xFF) == ((cmp2 >> j*8) & 0xFF)) {
res |= ((U32)1 << (j+i*sizeof(size_t)));
}
}
}
return res;
}
#endif /* !defined(ZSTD_NO_INTRINSICS) && defined(__SSE2__) */
typedef U64 ZSTD_VecMask; /* Clarifies when we are interacting with a U64 representing a mask of matches */
/* ZSTD_VecMask_next():
* Starting from the LSB, returns the idx of the next non-zero bit.
* Basically counting the nb of trailing zeroes.
*/
static U32 ZSTD_VecMask_next(ZSTD_VecMask val) {
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
return _BitScanForward(&r, val) ? (U32)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (U32)__builtin_ctz(val);
assert(val != 0);
# if defined(_MSC_VER) && defined(_WIN64)
if (val != 0) {
unsigned long r;
_BitScanForward64(&r, val);
return (U32)(r);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif (defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 4))))
if (sizeof(size_t) == 4) {
U32 mostSignificantWord = (U32)(val >> 32);
U32 leastSignificantWord = (U32)val;
if (leastSignificantWord == 0) {
return 32 + (U32)__builtin_ctz(mostSignificantWord);
} else {
return (U32)__builtin_ctz(leastSignificantWord);
}
} else {
return (U32)__builtin_ctzll(val);
}
# else
/* Software ctz version: http://graphics.stanford.edu/~seander/bithacks.html#ZerosOnRightMultLookup */
static const U32 multiplyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
return multiplyDeBruijnBitPosition[((U32)((v & -(int)v) * 0x077CB531U)) >> 27];
/* Software ctz version: http://aggregate.org/MAGIC/#Trailing%20Zero%20Count
* and: https://stackoverflow.com/questions/2709430/count-number-of-bits-in-a-64-bit-long-big-integer
*/
val = ~val & (val - 1ULL); /* Lowest set bit mask */
val = val - ((val >> 1) & 0x5555555555555555);
val = (val & 0x3333333333333333ULL) + ((val >> 2) & 0x3333333333333333ULL);
return (U32)((((val + (val >> 4)) & 0xF0F0F0F0F0F0F0FULL) * 0x101010101010101ULL) >> 56);
# endif
}
/* ZSTD_VecMask_rotateRight():
* Rotates a bitfield to the right by "rotation" bits.
* If the rotation is greater than totalBits, the returned mask is 0.
/* ZSTD_rotateRight_*():
* Rotates a bitfield to the right by "count" bits.
* https://en.wikipedia.org/w/index.php?title=Circular_shift&oldid=991635599#Implementing_circular_shifts
*/
FORCE_INLINE_TEMPLATE ZSTD_VecMask
ZSTD_VecMask_rotateRight(ZSTD_VecMask mask, U32 const rotation, U32 const totalBits) {
if (rotation == 0)
return mask;
switch (totalBits) {
default:
assert(0);
case 16:
return (mask >> rotation) | (U16)(mask << (16 - rotation));
case 32:
return (mask >> rotation) | (U32)(mask << (32 - rotation));
}
FORCE_INLINE_TEMPLATE
U64 ZSTD_rotateRight_U64(U64 const value, U32 count) {
assert(count < 64);
count &= 0x3F; /* for fickle pattern recognition */
return (value >> count) | (U64)(value << ((0U - count) & 0x3F));
}
FORCE_INLINE_TEMPLATE
U32 ZSTD_rotateRight_U32(U32 const value, U32 count) {
assert(count < 32);
count &= 0x1F; /* for fickle pattern recognition */
return (value >> count) | (U32)(value << ((0U - count) & 0x1F));
}
FORCE_INLINE_TEMPLATE
U16 ZSTD_rotateRight_U16(U16 const value, U32 count) {
assert(count < 16);
count &= 0x0F; /* for fickle pattern recognition */
return (value >> count) | (U16)(value << ((0U - count) & 0x0F));
}
/* ZSTD_row_nextIndex():
@@ -1126,20 +850,24 @@ MEM_STATIC int ZSTD_isAligned(void const* ptr, size_t align) {
*/
FORCE_INLINE_TEMPLATE void ZSTD_row_prefetch(U32 const* hashTable, U16 const* tagTable, U32 const relRow, U32 const rowLog) {
PREFETCH_L1(hashTable + relRow);
if (rowLog == 5) {
if (rowLog >= 5) {
PREFETCH_L1(hashTable + relRow + 16);
/* Note: prefetching more of the hash table does not appear to be beneficial for 128-entry rows */
}
PREFETCH_L1(tagTable + relRow);
assert(rowLog == 4 || rowLog == 5);
if (rowLog == 6) {
PREFETCH_L1(tagTable + relRow + 32);
}
assert(rowLog == 4 || rowLog == 5 || rowLog == 6);
assert(ZSTD_isAligned(hashTable + relRow, 64)); /* prefetched hash row always 64-byte aligned */
assert(ZSTD_isAligned(tagTable + relRow, (size_t)1 << rowLog)); /* prefetched tagRow sits on a multiple of 32 or 64 bytes */
assert(ZSTD_isAligned(tagTable + relRow, (size_t)1 << rowLog)); /* prefetched tagRow sits on correct multiple of bytes (32,64,128) */
}
/* ZSTD_row_fillHashCache():
* Fill up the hash cache starting at idx, prefetching up to ZSTD_ROW_HASH_CACHE_SIZE entries,
* but not beyond iLimit.
*/
static void ZSTD_row_fillHashCache(ZSTD_matchState_t* ms, const BYTE* base,
FORCE_INLINE_TEMPLATE void ZSTD_row_fillHashCache(ZSTD_matchState_t* ms, const BYTE* base,
U32 const rowLog, U32 const mls,
U32 idx, const BYTE* const iLimit)
{
@@ -1179,35 +907,65 @@ FORCE_INLINE_TEMPLATE U32 ZSTD_row_nextCachedHash(U32* cache, U32 const* hashTab
}
}
/* ZSTD_row_update_internal():
* Inserts the byte at ip into the appropriate position in the hash table.
* Determines the relative row, and the position within the {16, 32} entry row to insert at.
/* ZSTD_row_update_internalImpl():
* Updates the hash table with positions starting from updateStartIdx until updateEndIdx.
*/
FORCE_INLINE_TEMPLATE void ZSTD_row_update_internal(ZSTD_matchState_t* ms, const BYTE* ip,
U32 const mls, U32 const rowLog,
U32 const rowMask, U32 const useCache)
FORCE_INLINE_TEMPLATE void ZSTD_row_update_internalImpl(ZSTD_matchState_t* ms,
U32 updateStartIdx, U32 const updateEndIdx,
U32 const mls, U32 const rowLog,
U32 const rowMask, U32 const useCache)
{
U32* const hashTable = ms->hashTable;
U16* const tagTable = ms->tagTable;
U32 const hashLog = ms->rowHashLog;
const BYTE* const base = ms->window.base;
const U32 target = (U32)(ip - base);
U32 idx = ms->nextToUpdate;
DEBUGLOG(6, "ZSTD_row_update_internal(): nextToUpdate=%u, current=%u", idx, target);
for (; idx < target; ++idx) {
U32 const hash = useCache ? ZSTD_row_nextCachedHash(ms->hashCache, hashTable, tagTable, base, idx, hashLog, rowLog, mls)
: (U32)ZSTD_hashPtr(base + idx, hashLog + ZSTD_ROW_HASH_TAG_BITS, mls);
DEBUGLOG(6, "ZSTD_row_update_internalImpl(): updateStartIdx=%u, updateEndIdx=%u", updateStartIdx, updateEndIdx);
for (; updateStartIdx < updateEndIdx; ++updateStartIdx) {
U32 const hash = useCache ? ZSTD_row_nextCachedHash(ms->hashCache, hashTable, tagTable, base, updateStartIdx, hashLog, rowLog, mls)
: (U32)ZSTD_hashPtr(base + updateStartIdx, hashLog + ZSTD_ROW_HASH_TAG_BITS, mls);
U32 const relRow = (hash >> ZSTD_ROW_HASH_TAG_BITS) << rowLog;
U32* const row = hashTable + relRow;
BYTE* tagRow = (BYTE*)(tagTable + relRow); /* Though tagTable is laid out as a table of U16, each tag is only 1 byte.
Explicit cast allows us to get exact desired position within each row */
U32 const pos = ZSTD_row_nextIndex(tagRow, rowMask);
assert(hash == ZSTD_hashPtr(base + idx, hashLog + ZSTD_ROW_HASH_TAG_BITS, mls));
assert(hash == ZSTD_hashPtr(base + updateStartIdx, hashLog + ZSTD_ROW_HASH_TAG_BITS, mls));
((BYTE*)tagRow)[pos + ZSTD_ROW_HASH_TAG_OFFSET] = hash & ZSTD_ROW_HASH_TAG_MASK;
row[pos] = idx;
row[pos] = updateStartIdx;
}
}
/* ZSTD_row_update_internal():
* Inserts the byte at ip into the appropriate position in the hash table, and updates ms->nextToUpdate.
* Skips sections of long matches as is necessary.
*/
FORCE_INLINE_TEMPLATE void ZSTD_row_update_internal(ZSTD_matchState_t* ms, const BYTE* ip,
U32 const mls, U32 const rowLog,
U32 const rowMask, U32 const useCache)
{
U32 idx = ms->nextToUpdate;
const BYTE* const base = ms->window.base;
const U32 target = (U32)(ip - base);
const U32 kSkipThreshold = 384;
const U32 kMaxMatchStartPositionsToUpdate = 96;
const U32 kMaxMatchEndPositionsToUpdate = 32;
if (useCache) {
/* Only skip positions when using hash cache, i.e.
* if we are loading a dict, don't skip anything.
* If we decide to skip, then we only update a set number
* of positions at the beginning and end of the match.
*/
if (UNLIKELY(target - idx > kSkipThreshold)) {
U32 const bound = idx + kMaxMatchStartPositionsToUpdate;
ZSTD_row_update_internalImpl(ms, idx, bound, mls, rowLog, rowMask, useCache);
idx = target - kMaxMatchEndPositionsToUpdate;
ZSTD_row_fillHashCache(ms, base, rowLog, mls, idx, ip+1);
}
}
assert(target >= idx);
ZSTD_row_update_internalImpl(ms, idx, target, mls, rowLog, rowMask, useCache);
ms->nextToUpdate = target;
}
@@ -1216,7 +974,7 @@ FORCE_INLINE_TEMPLATE void ZSTD_row_update_internal(ZSTD_matchState_t* ms, const
* processing.
*/
void ZSTD_row_update(ZSTD_matchState_t* const ms, const BYTE* ip) {
const U32 rowLog = ms->cParams.searchLog < 5 ? 4 : 5;
const U32 rowLog = BOUNDED(4, ms->cParams.searchLog, 6);
const U32 rowMask = (1u << rowLog) - 1;
const U32 mls = MIN(ms->cParams.minMatch, 6 /* mls caps out at 6 */);
@@ -1224,26 +982,131 @@ void ZSTD_row_update(ZSTD_matchState_t* const ms, const BYTE* ip) {
ZSTD_row_update_internal(ms, ip, mls, rowLog, rowMask, 0 /* dont use cache */);
}
#if defined(ZSTD_ARCH_X86_SSE2)
FORCE_INLINE_TEMPLATE ZSTD_VecMask
ZSTD_row_getSSEMask(int nbChunks, const BYTE* const src, const BYTE tag, const U32 head)
{
const __m128i comparisonMask = _mm_set1_epi8((char)tag);
int matches[4] = {0};
int i;
assert(nbChunks == 1 || nbChunks == 2 || nbChunks == 4);
for (i=0; i<nbChunks; i++) {
const __m128i chunk = _mm_loadu_si128((const __m128i*)(const void*)(src + 16*i));
const __m128i equalMask = _mm_cmpeq_epi8(chunk, comparisonMask);
matches[i] = _mm_movemask_epi8(equalMask);
}
if (nbChunks == 1) return ZSTD_rotateRight_U16((U16)matches[0], head);
if (nbChunks == 2) return ZSTD_rotateRight_U32((U32)matches[1] << 16 | (U32)matches[0], head);
assert(nbChunks == 4);
return ZSTD_rotateRight_U64((U64)matches[3] << 48 | (U64)matches[2] << 32 | (U64)matches[1] << 16 | (U64)matches[0], head);
}
#endif
/* Returns a ZSTD_VecMask (U32) that has the nth bit set to 1 if the newly-computed "tag" matches
* the hash at the nth position in a row of the tagTable.
*/
FORCE_INLINE_TEMPLATE
ZSTD_VecMask ZSTD_row_getMatchMask(const BYTE* const tagRow, const BYTE tag, const U32 head, const U32 rowEntries) {
ZSTD_VecMask matches = 0;
if (rowEntries == 16) {
ZSTD_Vec128 hashes = ZSTD_Vec128_read(tagRow + ZSTD_ROW_HASH_TAG_OFFSET);
ZSTD_Vec128 expandedTags = ZSTD_Vec128_set8(tag);
matches = ZSTD_Vec128_cmpMask8(hashes, expandedTags);
} else if (rowEntries == 32) {
ZSTD_Vec256 hashes = ZSTD_Vec256_read(tagRow + ZSTD_ROW_HASH_TAG_OFFSET);
ZSTD_Vec256 expandedTags = ZSTD_Vec256_set8(tag);
matches = ZSTD_Vec256_cmpMask8(hashes, expandedTags);
} else {
assert(0);
* Each row is a circular buffer beginning at the value of "head". So we must rotate the "matches" bitfield
* to match up with the actual layout of the entries within the hashTable */
FORCE_INLINE_TEMPLATE ZSTD_VecMask
ZSTD_row_getMatchMask(const BYTE* const tagRow, const BYTE tag, const U32 head, const U32 rowEntries)
{
const BYTE* const src = tagRow + ZSTD_ROW_HASH_TAG_OFFSET;
assert((rowEntries == 16) || (rowEntries == 32) || rowEntries == 64);
assert(rowEntries <= ZSTD_ROW_HASH_MAX_ENTRIES);
#if defined(ZSTD_ARCH_X86_SSE2)
return ZSTD_row_getSSEMask(rowEntries / 16, src, tag, head);
#else /* SW or NEON-LE */
# if defined(ZSTD_ARCH_ARM_NEON)
/* This NEON path only works for little endian - otherwise use SWAR below */
if (MEM_isLittleEndian()) {
if (rowEntries == 16) {
const uint8x16_t chunk = vld1q_u8(src);
const uint16x8_t equalMask = vreinterpretq_u16_u8(vceqq_u8(chunk, vdupq_n_u8(tag)));
const uint16x8_t t0 = vshlq_n_u16(equalMask, 7);
const uint32x4_t t1 = vreinterpretq_u32_u16(vsriq_n_u16(t0, t0, 14));
const uint64x2_t t2 = vreinterpretq_u64_u32(vshrq_n_u32(t1, 14));
const uint8x16_t t3 = vreinterpretq_u8_u64(vsraq_n_u64(t2, t2, 28));
const U16 hi = (U16)vgetq_lane_u8(t3, 8);
const U16 lo = (U16)vgetq_lane_u8(t3, 0);
return ZSTD_rotateRight_U16((hi << 8) | lo, head);
} else if (rowEntries == 32) {
const uint16x8x2_t chunk = vld2q_u16((const U16*)(const void*)src);
const uint8x16_t chunk0 = vreinterpretq_u8_u16(chunk.val[0]);
const uint8x16_t chunk1 = vreinterpretq_u8_u16(chunk.val[1]);
const uint8x16_t equalMask0 = vceqq_u8(chunk0, vdupq_n_u8(tag));
const uint8x16_t equalMask1 = vceqq_u8(chunk1, vdupq_n_u8(tag));
const int8x8_t pack0 = vqmovn_s16(vreinterpretq_s16_u8(equalMask0));
const int8x8_t pack1 = vqmovn_s16(vreinterpretq_s16_u8(equalMask1));
const uint8x8_t t0 = vreinterpret_u8_s8(pack0);
const uint8x8_t t1 = vreinterpret_u8_s8(pack1);
const uint8x8_t t2 = vsri_n_u8(t1, t0, 2);
const uint8x8x2_t t3 = vuzp_u8(t2, t0);
const uint8x8_t t4 = vsri_n_u8(t3.val[1], t3.val[0], 4);
const U32 matches = vget_lane_u32(vreinterpret_u32_u8(t4), 0);
return ZSTD_rotateRight_U32(matches, head);
} else { /* rowEntries == 64 */
const uint8x16x4_t chunk = vld4q_u8(src);
const uint8x16_t dup = vdupq_n_u8(tag);
const uint8x16_t cmp0 = vceqq_u8(chunk.val[0], dup);
const uint8x16_t cmp1 = vceqq_u8(chunk.val[1], dup);
const uint8x16_t cmp2 = vceqq_u8(chunk.val[2], dup);
const uint8x16_t cmp3 = vceqq_u8(chunk.val[3], dup);
const uint8x16_t t0 = vsriq_n_u8(cmp1, cmp0, 1);
const uint8x16_t t1 = vsriq_n_u8(cmp3, cmp2, 1);
const uint8x16_t t2 = vsriq_n_u8(t1, t0, 2);
const uint8x16_t t3 = vsriq_n_u8(t2, t2, 4);
const uint8x8_t t4 = vshrn_n_u16(vreinterpretq_u16_u8(t3), 4);
const U64 matches = vget_lane_u64(vreinterpret_u64_u8(t4), 0);
return ZSTD_rotateRight_U64(matches, head);
}
}
/* Each row is a circular buffer beginning at the value of "head". So we must rotate the "matches" bitfield
to match up with the actual layout of the entries within the hashTable */
return ZSTD_VecMask_rotateRight(matches, head, rowEntries);
# endif /* ZSTD_ARCH_ARM_NEON */
/* SWAR */
{ const size_t chunkSize = sizeof(size_t);
const size_t shiftAmount = ((chunkSize * 8) - chunkSize);
const size_t xFF = ~((size_t)0);
const size_t x01 = xFF / 0xFF;
const size_t x80 = x01 << 7;
const size_t splatChar = tag * x01;
ZSTD_VecMask matches = 0;
int i = rowEntries - chunkSize;
assert((sizeof(size_t) == 4) || (sizeof(size_t) == 8));
if (MEM_isLittleEndian()) { /* runtime check so have two loops */
const size_t extractMagic = (xFF / 0x7F) >> chunkSize;
do {
size_t chunk = MEM_readST(&src[i]);
chunk ^= splatChar;
chunk = (((chunk | x80) - x01) | chunk) & x80;
matches <<= chunkSize;
matches |= (chunk * extractMagic) >> shiftAmount;
i -= chunkSize;
} while (i >= 0);
} else { /* big endian: reverse bits during extraction */
const size_t msb = xFF ^ (xFF >> 1);
const size_t extractMagic = (msb / 0x1FF) | msb;
do {
size_t chunk = MEM_readST(&src[i]);
chunk ^= splatChar;
chunk = (((chunk | x80) - x01) | chunk) & x80;
matches <<= chunkSize;
matches |= ((chunk >> 7) * extractMagic) >> shiftAmount;
i -= chunkSize;
} while (i >= 0);
}
matches = ~matches;
if (rowEntries == 16) {
return ZSTD_rotateRight_U16((U16)matches, head);
} else if (rowEntries == 32) {
return ZSTD_rotateRight_U32((U32)matches, head);
} else {
return ZSTD_rotateRight_U64((U64)matches, head);
}
}
#endif
}
/* The high-level approach of the SIMD row based match finder is as follows:
@@ -1262,7 +1125,7 @@ ZSTD_VecMask ZSTD_row_getMatchMask(const BYTE* const tagRow, const BYTE tag, con
* - Pick the longest match.
*/
FORCE_INLINE_TEMPLATE
size_t ZSTD_RowFindBestMatch_generic (
size_t ZSTD_RowFindBestMatch(
ZSTD_matchState_t* ms,
const BYTE* const ip, const BYTE* const iLimit,
size_t* offsetPtr,
@@ -1293,11 +1156,13 @@ size_t ZSTD_RowFindBestMatch_generic (
/* DMS/DDS variables that may be referenced laster */
const ZSTD_matchState_t* const dms = ms->dictMatchState;
size_t ddsIdx;
U32 ddsExtraAttempts; /* cctx hash tables are limited in searches, but allow extra searches into DDS */
U32 dmsTag;
U32* dmsRow;
BYTE* dmsTagRow;
/* Initialize the following variables to satisfy static analyzer */
size_t ddsIdx = 0;
U32 ddsExtraAttempts = 0; /* cctx hash tables are limited in searches, but allow extra searches into DDS */
U32 dmsTag = 0;
U32* dmsRow = NULL;
BYTE* dmsTagRow = NULL;
if (dictMode == ZSTD_dedicatedDictSearch) {
const U32 ddsHashLog = dms->cParams.hashLog - ZSTD_LAZY_DDSS_BUCKET_LOG;
@@ -1329,7 +1194,7 @@ size_t ZSTD_RowFindBestMatch_generic (
U32* const row = hashTable + relRow;
BYTE* tagRow = (BYTE*)(tagTable + relRow);
U32 const head = *tagRow & rowMask;
U32 matchBuffer[32 /* maximum nb entries per row */];
U32 matchBuffer[ZSTD_ROW_HASH_MAX_ENTRIES];
size_t numMatches = 0;
size_t currMatch = 0;
ZSTD_VecMask matches = ZSTD_row_getMatchMask(tagRow, (BYTE)tag, head, rowEntries);
@@ -1385,6 +1250,7 @@ size_t ZSTD_RowFindBestMatch_generic (
}
}
assert(nbAttempts <= (1U << ZSTD_SEARCHLOG_MAX)); /* Check we haven't underflowed. */
if (dictMode == ZSTD_dedicatedDictSearch) {
ml = ZSTD_dedicatedDictSearch_lazy_search(offsetPtr, ml, nbAttempts + ddsExtraAttempts, dms,
ip, iLimit, prefixStart, curr, dictLimit, ddsIdx);
@@ -1397,7 +1263,7 @@ size_t ZSTD_RowFindBestMatch_generic (
const U32 dmsIndexDelta = dictLimit - dmsSize;
{ U32 const head = *dmsTagRow & rowMask;
U32 matchBuffer[32 /* maximum nb row entries */];
U32 matchBuffer[ZSTD_ROW_HASH_MAX_ENTRIES];
size_t numMatches = 0;
size_t currMatch = 0;
ZSTD_VecMask matches = ZSTD_row_getMatchMask(dmsTagRow, (BYTE)dmsTag, head, rowEntries);
@@ -1435,84 +1301,175 @@ size_t ZSTD_RowFindBestMatch_generic (
return ml;
}
/* Inlining is important to hardwire a hot branch (template emulation) */
FORCE_INLINE_TEMPLATE size_t ZSTD_RowFindBestMatch_selectMLS (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
const ZSTD_dictMode_e dictMode, size_t* offsetPtr, const U32 rowLog)
{
switch(ms->cParams.minMatch)
{
default : /* includes case 3 */
case 4 : return ZSTD_RowFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 4, dictMode, rowLog);
case 5 : return ZSTD_RowFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 5, dictMode, rowLog);
case 7 :
case 6 : return ZSTD_RowFindBestMatch_generic(ms, ip, iLimit, offsetPtr, 6, dictMode, rowLog);
}
}
FORCE_INLINE_TEMPLATE size_t ZSTD_RowFindBestMatch_selectRowLog (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
const U32 cappedSearchLog = MIN(ms->cParams.searchLog, 5);
switch(cappedSearchLog)
{
default :
case 4 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_noDict, offsetPtr, 4);
case 5 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_noDict, offsetPtr, 5);
}
}
typedef size_t (*searchMax_f)(
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* iLimit, size_t* offsetPtr);
FORCE_INLINE_TEMPLATE size_t ZSTD_RowFindBestMatch_dictMatchState_selectRowLog(
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
const U32 cappedSearchLog = MIN(ms->cParams.searchLog, 5);
switch(cappedSearchLog)
{
default :
case 4 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_dictMatchState, offsetPtr, 4);
case 5 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_dictMatchState, offsetPtr, 5);
}
}
/**
* This struct contains the functions necessary for lazy to search.
* Currently, that is only searchMax. However, it is still valuable to have the
* VTable because this makes it easier to add more functions to the VTable later.
*
* TODO: The start of the search function involves loading and calculating a
* bunch of constants from the ZSTD_matchState_t. These computations could be
* done in an initialization function, and saved somewhere in the match state.
* Then we could pass a pointer to the saved state instead of the match state,
* and avoid duplicate computations.
*
* TODO: Move the match re-winding into searchMax. This improves compression
* ratio, and unlocks further simplifications with the next TODO.
*
* TODO: Try moving the repcode search into searchMax. After the re-winding
* and repcode search are in searchMax, there is no more logic in the match
* finder loop that requires knowledge about the dictMode. So we should be
* able to avoid force inlining it, and we can join the extDict loop with
* the single segment loop. It should go in searchMax instead of its own
* function to avoid having multiple virtual function calls per search.
*/
typedef struct {
searchMax_f searchMax;
} ZSTD_LazyVTable;
FORCE_INLINE_TEMPLATE size_t ZSTD_RowFindBestMatch_dedicatedDictSearch_selectRowLog(
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
const U32 cappedSearchLog = MIN(ms->cParams.searchLog, 5);
switch(cappedSearchLog)
{
default :
case 4 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_dedicatedDictSearch, offsetPtr, 4);
case 5 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_dedicatedDictSearch, offsetPtr, 5);
}
}
#define GEN_ZSTD_BT_VTABLE(dictMode, mls) \
static size_t ZSTD_BtFindBestMatch_##dictMode##_##mls( \
ZSTD_matchState_t* ms, \
const BYTE* ip, const BYTE* const iLimit, \
size_t* offsetPtr) \
{ \
assert(MAX(4, MIN(6, ms->cParams.minMatch)) == mls); \
return ZSTD_BtFindBestMatch(ms, ip, iLimit, offsetPtr, mls, ZSTD_##dictMode); \
} \
static const ZSTD_LazyVTable ZSTD_BtVTable_##dictMode##_##mls = { \
ZSTD_BtFindBestMatch_##dictMode##_##mls \
};
FORCE_INLINE_TEMPLATE size_t ZSTD_RowFindBestMatch_extDict_selectRowLog (
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* const iLimit,
size_t* offsetPtr)
{
const U32 cappedSearchLog = MIN(ms->cParams.searchLog, 5);
switch(cappedSearchLog)
{
default :
case 4 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_extDict, offsetPtr, 4);
case 5 : return ZSTD_RowFindBestMatch_selectMLS(ms, ip, iLimit, ZSTD_extDict, offsetPtr, 5);
}
}
#define GEN_ZSTD_HC_VTABLE(dictMode, mls) \
static size_t ZSTD_HcFindBestMatch_##dictMode##_##mls( \
ZSTD_matchState_t* ms, \
const BYTE* ip, const BYTE* const iLimit, \
size_t* offsetPtr) \
{ \
assert(MAX(4, MIN(6, ms->cParams.minMatch)) == mls); \
return ZSTD_HcFindBestMatch(ms, ip, iLimit, offsetPtr, mls, ZSTD_##dictMode); \
} \
static const ZSTD_LazyVTable ZSTD_HcVTable_##dictMode##_##mls = { \
ZSTD_HcFindBestMatch_##dictMode##_##mls \
};
#define GEN_ZSTD_ROW_VTABLE(dictMode, mls, rowLog) \
static size_t ZSTD_RowFindBestMatch_##dictMode##_##mls##_##rowLog( \
ZSTD_matchState_t* ms, \
const BYTE* ip, const BYTE* const iLimit, \
size_t* offsetPtr) \
{ \
assert(MAX(4, MIN(6, ms->cParams.minMatch)) == mls); \
assert(MAX(4, MIN(6, ms->cParams.searchLog)) == rowLog); \
return ZSTD_RowFindBestMatch(ms, ip, iLimit, offsetPtr, mls, ZSTD_##dictMode, rowLog); \
} \
static const ZSTD_LazyVTable ZSTD_RowVTable_##dictMode##_##mls##_##rowLog = { \
ZSTD_RowFindBestMatch_##dictMode##_##mls##_##rowLog \
};
#define ZSTD_FOR_EACH_ROWLOG(X, dictMode, mls) \
X(dictMode, mls, 4) \
X(dictMode, mls, 5) \
X(dictMode, mls, 6)
#define ZSTD_FOR_EACH_MLS_ROWLOG(X, dictMode) \
ZSTD_FOR_EACH_ROWLOG(X, dictMode, 4) \
ZSTD_FOR_EACH_ROWLOG(X, dictMode, 5) \
ZSTD_FOR_EACH_ROWLOG(X, dictMode, 6)
#define ZSTD_FOR_EACH_MLS(X, dictMode) \
X(dictMode, 4) \
X(dictMode, 5) \
X(dictMode, 6)
#define ZSTD_FOR_EACH_DICT_MODE(X, ...) \
X(__VA_ARGS__, noDict) \
X(__VA_ARGS__, extDict) \
X(__VA_ARGS__, dictMatchState) \
X(__VA_ARGS__, dedicatedDictSearch)
/* Generate Row VTables for each combination of (dictMode, mls, rowLog) */
ZSTD_FOR_EACH_DICT_MODE(ZSTD_FOR_EACH_MLS_ROWLOG, GEN_ZSTD_ROW_VTABLE)
/* Generate Binary Tree VTables for each combination of (dictMode, mls) */
ZSTD_FOR_EACH_DICT_MODE(ZSTD_FOR_EACH_MLS, GEN_ZSTD_BT_VTABLE)
/* Generate Hash Chain VTables for each combination of (dictMode, mls) */
ZSTD_FOR_EACH_DICT_MODE(ZSTD_FOR_EACH_MLS, GEN_ZSTD_HC_VTABLE)
#define GEN_ZSTD_BT_VTABLE_ARRAY(dictMode) \
{ \
&ZSTD_BtVTable_##dictMode##_4, \
&ZSTD_BtVTable_##dictMode##_5, \
&ZSTD_BtVTable_##dictMode##_6 \
}
#define GEN_ZSTD_HC_VTABLE_ARRAY(dictMode) \
{ \
&ZSTD_HcVTable_##dictMode##_4, \
&ZSTD_HcVTable_##dictMode##_5, \
&ZSTD_HcVTable_##dictMode##_6 \
}
#define GEN_ZSTD_ROW_VTABLE_ARRAY_(dictMode, mls) \
{ \
&ZSTD_RowVTable_##dictMode##_##mls##_4, \
&ZSTD_RowVTable_##dictMode##_##mls##_5, \
&ZSTD_RowVTable_##dictMode##_##mls##_6 \
}
#define GEN_ZSTD_ROW_VTABLE_ARRAY(dictMode) \
{ \
GEN_ZSTD_ROW_VTABLE_ARRAY_(dictMode, 4), \
GEN_ZSTD_ROW_VTABLE_ARRAY_(dictMode, 5), \
GEN_ZSTD_ROW_VTABLE_ARRAY_(dictMode, 6) \
}
#define GEN_ZSTD_VTABLE_ARRAY(X) \
{ \
X(noDict), \
X(extDict), \
X(dictMatchState), \
X(dedicatedDictSearch) \
}
/* *******************************
* Common parser - lazy strategy
*********************************/
typedef enum { search_hashChain=0, search_binaryTree=1, search_rowHash=2 } searchMethod_e;
/**
* This table is indexed first by the four ZSTD_dictMode_e values, and then
* by the two searchMethod_e values. NULLs are placed for configurations
* that should never occur (extDict modes go to the other implementation
* below and there is no DDSS for binary tree search yet).
*/
static ZSTD_LazyVTable const*
ZSTD_selectLazyVTable(ZSTD_matchState_t const* ms, searchMethod_e searchMethod, ZSTD_dictMode_e dictMode)
{
/* Fill the Hc/Bt VTable arrays with the right functions for the (dictMode, mls) combination. */
ZSTD_LazyVTable const* const hcVTables[4][3] = GEN_ZSTD_VTABLE_ARRAY(GEN_ZSTD_HC_VTABLE_ARRAY);
ZSTD_LazyVTable const* const btVTables[4][3] = GEN_ZSTD_VTABLE_ARRAY(GEN_ZSTD_BT_VTABLE_ARRAY);
/* Fill the Row VTable array with the right functions for the (dictMode, mls, rowLog) combination. */
ZSTD_LazyVTable const* const rowVTables[4][3][3] = GEN_ZSTD_VTABLE_ARRAY(GEN_ZSTD_ROW_VTABLE_ARRAY);
U32 const mls = MAX(4, MIN(6, ms->cParams.minMatch));
U32 const rowLog = MAX(4, MIN(6, ms->cParams.searchLog));
switch (searchMethod) {
case search_hashChain:
return hcVTables[dictMode][mls - 4];
case search_binaryTree:
return btVTables[dictMode][mls - 4];
case search_rowHash:
return rowVTables[dictMode][mls - 4][rowLog - 4];
default:
return NULL;
}
}
FORCE_INLINE_TEMPLATE size_t
ZSTD_compressBlock_lazy_generic(
ZSTD_matchState_t* ms, seqStore_t* seqStore,
@@ -1525,46 +1482,12 @@ ZSTD_compressBlock_lazy_generic(
const BYTE* ip = istart;
const BYTE* anchor = istart;
const BYTE* const iend = istart + srcSize;
const BYTE* const ilimit = searchMethod == search_rowHash ? iend - 8 - ZSTD_ROW_HASH_CACHE_SIZE : iend - 8;
const BYTE* const ilimit = (searchMethod == search_rowHash) ? iend - 8 - ZSTD_ROW_HASH_CACHE_SIZE : iend - 8;
const BYTE* const base = ms->window.base;
const U32 prefixLowestIndex = ms->window.dictLimit;
const BYTE* const prefixLowest = base + prefixLowestIndex;
const U32 rowLog = ms->cParams.searchLog < 5 ? 4 : 5;
typedef size_t (*searchMax_f)(
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* iLimit, size_t* offsetPtr);
/**
* This table is indexed first by the four ZSTD_dictMode_e values, and then
* by the two searchMethod_e values. NULLs are placed for configurations
* that should never occur (extDict modes go to the other implementation
* below and there is no DDSS for binary tree search yet).
*/
const searchMax_f searchFuncs[4][3] = {
{
ZSTD_HcFindBestMatch_selectMLS,
ZSTD_BtFindBestMatch_selectMLS,
ZSTD_RowFindBestMatch_selectRowLog
},
{
NULL,
NULL,
NULL
},
{
ZSTD_HcFindBestMatch_dictMatchState_selectMLS,
ZSTD_BtFindBestMatch_dictMatchState_selectMLS,
ZSTD_RowFindBestMatch_dictMatchState_selectRowLog
},
{
ZSTD_HcFindBestMatch_dedicatedDictSearch_selectMLS,
NULL,
ZSTD_RowFindBestMatch_dedicatedDictSearch_selectRowLog
}
};
searchMax_f const searchMax = searchFuncs[dictMode][(int)searchMethod];
searchMax_f const searchMax = ZSTD_selectLazyVTable(ms, searchMethod, dictMode)->searchMax;
U32 offset_1 = rep[0], offset_2 = rep[1], savedOffset=0;
const int isDMS = dictMode == ZSTD_dictMatchState;
@@ -1599,6 +1522,7 @@ ZSTD_compressBlock_lazy_generic(
}
if (searchMethod == search_rowHash) {
const U32 rowLog = MAX(4, MIN(6, ms->cParams.searchLog));
ZSTD_row_fillHashCache(ms, base, rowLog,
MIN(ms->cParams.minMatch, 6 /* mls caps out at 6 */),
ms->nextToUpdate, ilimit);
@@ -1734,7 +1658,7 @@ ZSTD_compressBlock_lazy_generic(
{ start--; matchLength++; }
}
if (isDxS) {
U32 const matchIndex = (U32)((start-base) - (offset - ZSTD_REP_MOVE));
U32 const matchIndex = (U32)((size_t)(start-base) - (offset - ZSTD_REP_MOVE));
const BYTE* match = (matchIndex < prefixLowestIndex) ? dictBase + matchIndex - dictIndexDelta : base + matchIndex;
const BYTE* const mStart = (matchIndex < prefixLowestIndex) ? dictLowest : prefixLowest;
while ((start>anchor) && (match>mStart) && (start[-1] == match[-1])) { start--; match--; matchLength++; } /* catch up */
@@ -1743,7 +1667,7 @@ ZSTD_compressBlock_lazy_generic(
}
/* store sequence */
_storeSequence:
{ size_t const litLength = start - anchor;
{ size_t const litLength = (size_t)(start - anchor);
ZSTD_storeSeq(seqStore, litLength, anchor, iend, (U32)offset, matchLength-MINMATCH);
anchor = ip = start + matchLength;
}
@@ -1955,15 +1879,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
const U32 windowLog = ms->cParams.windowLog;
const U32 rowLog = ms->cParams.searchLog < 5 ? 4 : 5;
typedef size_t (*searchMax_f)(
ZSTD_matchState_t* ms,
const BYTE* ip, const BYTE* iLimit, size_t* offsetPtr);
const searchMax_f searchFuncs[3] = {
ZSTD_HcFindBestMatch_extDict_selectMLS,
ZSTD_BtFindBestMatch_extDict_selectMLS,
ZSTD_RowFindBestMatch_extDict_selectRowLog
};
searchMax_f searchMax = searchFuncs[(int)searchMethod];
searchMax_f const searchMax = ZSTD_selectLazyVTable(ms, searchMethod, ZSTD_extDict)->searchMax;
U32 offset_1 = rep[0], offset_2 = rep[1];
DEBUGLOG(5, "ZSTD_compressBlock_lazy_extDict_generic (searchFunc=%u)", (U32)searchMethod);
@@ -1995,7 +1911,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
const BYTE* const repMatch = repBase + repIndex;
if ( ((U32)((dictLimit-1) - repIndex) >= 3) /* intentional overflow */
& (offset_1 < curr+1 - windowLow) ) /* note: we are searching at curr+1 */
& (offset_1 <= curr+1 - windowLow) ) /* note: we are searching at curr+1 */
if (MEM_read32(ip+1) == MEM_read32(repMatch)) {
/* repcode detected we should take it */
const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
@@ -2010,7 +1926,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
matchLength = ml2, start = ip, offset=offsetFound;
}
if (matchLength < 4) {
if (matchLength < 4) {
ip += ((ip-anchor) >> kSearchStrength) + 1; /* jump faster over incompressible sections */
continue;
}
@@ -2027,7 +1943,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
const BYTE* const repMatch = repBase + repIndex;
if ( ((U32)((dictLimit-1) - repIndex) >= 3) /* intentional overflow : do not test positions overlapping 2 memory segments */
& (offset_1 < curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
& (offset_1 <= curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
if (MEM_read32(ip) == MEM_read32(repMatch)) {
/* repcode detected */
const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
@@ -2059,7 +1975,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
const BYTE* const repMatch = repBase + repIndex;
if ( ((U32)((dictLimit-1) - repIndex) >= 3) /* intentional overflow : do not test positions overlapping 2 memory segments */
& (offset_1 < curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
& (offset_1 <= curr - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
if (MEM_read32(ip) == MEM_read32(repMatch)) {
/* repcode detected */
const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
@@ -2084,7 +2000,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
/* catch up */
if (offset) {
U32 const matchIndex = (U32)((start-base) - (offset - ZSTD_REP_MOVE));
U32 const matchIndex = (U32)((size_t)(start-base) - (offset - ZSTD_REP_MOVE));
const BYTE* match = (matchIndex < dictLimit) ? dictBase + matchIndex : base + matchIndex;
const BYTE* const mStart = (matchIndex < dictLimit) ? dictStart : prefixStart;
while ((start>anchor) && (match>mStart) && (start[-1] == match[-1])) { start--; match--; matchLength++; } /* catch up */
@@ -2093,7 +2009,7 @@ size_t ZSTD_compressBlock_lazy_extDict_generic(
/* store sequence */
_storeSequence:
{ size_t const litLength = start - anchor;
{ size_t const litLength = (size_t)(start - anchor);
ZSTD_storeSeq(seqStore, litLength, anchor, iend, (U32)offset, matchLength-MINMATCH);
anchor = ip = start + matchLength;
}
@@ -2106,7 +2022,7 @@ _storeSequence:
const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
const BYTE* const repMatch = repBase + repIndex;
if ( ((U32)((dictLimit-1) - repIndex) >= 3) /* intentional overflow : do not test positions overlapping 2 memory segments */
& (offset_2 < repCurrent - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
& (offset_2 <= repCurrent - windowLow) ) /* equivalent to `curr > repIndex >= windowLow` */
if (MEM_read32(ip) == MEM_read32(repMatch)) {
/* repcode detected we should take it */
const BYTE* const repEnd = repIndex < dictLimit ? dictEnd : iend;
lib/compress/zstd_ldm.c
+4 -4
View File
@@ -159,12 +159,12 @@ size_t ZSTD_ldm_getTableSize(ldmParams_t params)
size_t const ldmBucketSize = ((size_t)1) << (params.hashLog - ldmBucketSizeLog);
size_t const totalSize = ZSTD_cwksp_alloc_size(ldmBucketSize)
+ ZSTD_cwksp_alloc_size(ldmHSize * sizeof(ldmEntry_t));
return params.enableLdm ? totalSize : 0;
return params.enableLdm == ZSTD_ps_enable ? totalSize : 0;
}
size_t ZSTD_ldm_getMaxNbSeq(ldmParams_t params, size_t maxChunkSize)
{
return params.enableLdm ? (maxChunkSize / params.minMatchLength) : 0;
return params.enableLdm == ZSTD_ps_enable ? (maxChunkSize / params.minMatchLength) : 0;
}
/** ZSTD_ldm_getBucket() :
@@ -478,7 +478,7 @@ static size_t ZSTD_ldm_generateSequences_internal(
*/
if (anchor > ip + hashed) {
ZSTD_ldm_gear_reset(&hashState, anchor - minMatchLength, minMatchLength);
/* Continue the outter loop at anchor (ip + hashed == anchor). */
/* Continue the outer loop at anchor (ip + hashed == anchor). */
ip = anchor - hashed;
break;
}
@@ -657,7 +657,7 @@ void ZSTD_ldm_skipRawSeqStoreBytes(rawSeqStore_t* rawSeqStore, size_t nbBytes) {
size_t ZSTD_ldm_blockCompress(rawSeqStore_t* rawSeqStore,
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
ZSTD_paramSwitch_e useRowMatchFinder,
void const* src, size_t srcSize)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
lib/compress/zstd_ldm.h
+1 -1
View File
@@ -66,7 +66,7 @@ size_t ZSTD_ldm_generateSequences(
*/
size_t ZSTD_ldm_blockCompress(rawSeqStore_t* rawSeqStore,
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
ZSTD_useRowMatchFinderMode_e useRowMatchFinder,
ZSTD_paramSwitch_e useRowMatchFinder,
void const* src, size_t srcSize);
/**
lib/compress/zstd_ldm_geartab.h
+4 -1
View File
@@ -11,7 +11,10 @@
#ifndef ZSTD_LDM_GEARTAB_H
#define ZSTD_LDM_GEARTAB_H
static U64 ZSTD_ldm_gearTab[256] = {
#include "../common/compiler.h" /* UNUSED_ATTR */
#include "../common/mem.h" /* U64 */
static UNUSED_ATTR const U64 ZSTD_ldm_gearTab[256] = {
0xf5b8f72c5f77775c, 0x84935f266b7ac412, 0xb647ada9ca730ccc,
0xb065bb4b114fb1de, 0x34584e7e8c3a9fd0, 0x4e97e17c6ae26b05,
0x3a03d743bc99a604, 0xcecd042422c4044f, 0x76de76c58524259e,
lib/compress/zstd_opt.c
+185 -107
View File
@@ -14,7 +14,6 @@
#define ZSTD_LITFREQ_ADD 2 /* scaling factor for litFreq, so that frequencies adapt faster to new stats */
#define ZSTD_FREQ_DIV 4 /* log factor when using previous stats to init next stats */
#define ZSTD_MAX_PRICE (1<<30)
#define ZSTD_PREDEF_THRESHOLD 1024 /* if srcSize < ZSTD_PREDEF_THRESHOLD, symbols' cost is assumed static, directly determined by pre-defined distributions */
@@ -24,11 +23,11 @@
* Price functions for optimal parser
***************************************/
#if 0 /* approximation at bit level */
#if 0 /* approximation at bit level (for tests) */
# define BITCOST_ACCURACY 0
# define BITCOST_MULTIPLIER (1 << BITCOST_ACCURACY)
# define WEIGHT(stat) ((void)opt, ZSTD_bitWeight(stat))
#elif 0 /* fractional bit accuracy */
# define WEIGHT(stat, opt) ((void)opt, ZSTD_bitWeight(stat))
#elif 0 /* fractional bit accuracy (for tests) */
# define BITCOST_ACCURACY 8
# define BITCOST_MULTIPLIER (1 << BITCOST_ACCURACY)
# define WEIGHT(stat,opt) ((void)opt, ZSTD_fracWeight(stat))
@@ -66,7 +65,7 @@ MEM_STATIC double ZSTD_fCost(U32 price)
static int ZSTD_compressedLiterals(optState_t const* const optPtr)
{
return optPtr->literalCompressionMode != ZSTD_lcm_uncompressed;
return optPtr->literalCompressionMode != ZSTD_ps_disable;
}
static void ZSTD_setBasePrices(optState_t* optPtr, int optLevel)
@@ -79,25 +78,46 @@ static void ZSTD_setBasePrices(optState_t* optPtr, int optLevel)
}
/* ZSTD_downscaleStat() :
* reduce all elements in table by a factor 2^(ZSTD_FREQ_DIV+malus)
* return the resulting sum of elements */
static U32 ZSTD_downscaleStat(unsigned* table, U32 lastEltIndex, int malus)
static U32 sum_u32(const unsigned table[], size_t nbElts)
{
size_t n;
U32 total = 0;
for (n=0; n<nbElts; n++) {
total += table[n];
}
return total;
}
static U32 ZSTD_downscaleStats(unsigned* table, U32 lastEltIndex, U32 shift)
{
U32 s, sum=0;
DEBUGLOG(5, "ZSTD_downscaleStat (nbElts=%u)", (unsigned)lastEltIndex+1);
assert(ZSTD_FREQ_DIV+malus > 0 && ZSTD_FREQ_DIV+malus < 31);
DEBUGLOG(5, "ZSTD_downscaleStats (nbElts=%u, shift=%u)", (unsigned)lastEltIndex+1, (unsigned)shift);
assert(shift < 30);
for (s=0; s<lastEltIndex+1; s++) {
table[s] = 1 + (table[s] >> (ZSTD_FREQ_DIV+malus));
table[s] = 1 + (table[s] >> shift);
sum += table[s];
}
return sum;
}
/* ZSTD_scaleStats() :
* reduce all elements in table is sum too large
* return the resulting sum of elements */
static U32 ZSTD_scaleStats(unsigned* table, U32 lastEltIndex, U32 logTarget)
{
U32 const prevsum = sum_u32(table, lastEltIndex+1);
U32 const factor = prevsum >> logTarget;
DEBUGLOG(5, "ZSTD_scaleStats (nbElts=%u, target=%u)", (unsigned)lastEltIndex+1, (unsigned)logTarget);
assert(logTarget < 30);
if (factor <= 1) return prevsum;
return ZSTD_downscaleStats(table, lastEltIndex, ZSTD_highbit32(factor));
}
/* ZSTD_rescaleFreqs() :
* if first block (detected by optPtr->litLengthSum == 0) : init statistics
* take hints from dictionary if there is one
* or init from zero, using src for literals stats, or flat 1 for match symbols
* and init from zero if there is none,
* using src for literals stats, and baseline stats for sequence symbols
* otherwise downscale existing stats, to be used as seed for next block.
*/
static void
@@ -126,7 +146,7 @@ ZSTD_rescaleFreqs(optState_t* const optPtr,
optPtr->litSum = 0;
for (lit=0; lit<=MaxLit; lit++) {
U32 const scaleLog = 11; /* scale to 2K */
U32 const bitCost = HUF_getNbBits(optPtr->symbolCosts->huf.CTable, lit);
U32 const bitCost = HUF_getNbBitsFromCTable(optPtr->symbolCosts->huf.CTable, lit);
assert(bitCost <= scaleLog);
optPtr->litFreq[lit] = bitCost ? 1 << (scaleLog-bitCost) : 1 /*minimum to calculate cost*/;
optPtr->litSum += optPtr->litFreq[lit];
@@ -174,14 +194,18 @@ ZSTD_rescaleFreqs(optState_t* const optPtr,
if (compressedLiterals) {
unsigned lit = MaxLit;
HIST_count_simple(optPtr->litFreq, &lit, src, srcSize); /* use raw first block to init statistics */
optPtr->litSum = ZSTD_downscaleStat(optPtr->litFreq, MaxLit, 1);
optPtr->litSum = ZSTD_downscaleStats(optPtr->litFreq, MaxLit, 8);
}
{ unsigned ll;
for (ll=0; ll<=MaxLL; ll++)
optPtr->litLengthFreq[ll] = 1;
{ unsigned const baseLLfreqs[MaxLL+1] = {
4, 2, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1
};
ZSTD_memcpy(optPtr->litLengthFreq, baseLLfreqs, sizeof(baseLLfreqs)); optPtr->litLengthSum = sum_u32(baseLLfreqs, MaxLL+1);
}
optPtr->litLengthSum = MaxLL+1;
{ unsigned ml;
for (ml=0; ml<=MaxML; ml++)
@@ -189,21 +213,25 @@ ZSTD_rescaleFreqs(optState_t* const optPtr,
}
optPtr->matchLengthSum = MaxML+1;
{ unsigned of;
for (of=0; of<=MaxOff; of++)
optPtr->offCodeFreq[of] = 1;
{ unsigned const baseOFCfreqs[MaxOff+1] = {
6, 2, 1, 1, 2, 3, 4, 4,
4, 3, 2, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1
};
ZSTD_memcpy(optPtr->offCodeFreq, baseOFCfreqs, sizeof(baseOFCfreqs)); optPtr->offCodeSum = sum_u32(baseOFCfreqs, MaxOff+1);
}
optPtr->offCodeSum = MaxOff+1;
}
} else { /* new block : re-use previous statistics, scaled down */
if (compressedLiterals)
optPtr->litSum = ZSTD_downscaleStat(optPtr->litFreq, MaxLit, 1);
optPtr->litLengthSum = ZSTD_downscaleStat(optPtr->litLengthFreq, MaxLL, 0);
optPtr->matchLengthSum = ZSTD_downscaleStat(optPtr->matchLengthFreq, MaxML, 0);
optPtr->offCodeSum = ZSTD_downscaleStat(optPtr->offCodeFreq, MaxOff, 0);
optPtr->litSum = ZSTD_scaleStats(optPtr->litFreq, MaxLit, 12);
optPtr->litLengthSum = ZSTD_scaleStats(optPtr->litLengthFreq, MaxLL, 11);
optPtr->matchLengthSum = ZSTD_scaleStats(optPtr->matchLengthFreq, MaxML, 11);
optPtr->offCodeSum = ZSTD_scaleStats(optPtr->offCodeFreq, MaxOff, 11);
}
ZSTD_setBasePrices(optPtr, optLevel);
@@ -338,7 +366,7 @@ MEM_STATIC U32 ZSTD_readMINMATCH(const void* memPtr, U32 length)
/* Update hashTable3 up to ip (excluded)
Assumption : always within prefix (i.e. not within extDict) */
static U32 ZSTD_insertAndFindFirstIndexHash3 (ZSTD_matchState_t* ms,
static U32 ZSTD_insertAndFindFirstIndexHash3 (const ZSTD_matchState_t* ms,
U32* nextToUpdate3,
const BYTE* const ip)
{
@@ -364,11 +392,13 @@ static U32 ZSTD_insertAndFindFirstIndexHash3 (ZSTD_matchState_t* ms,
* Binary Tree search
***************************************/
/** ZSTD_insertBt1() : add one or multiple positions to tree.
* ip : assumed <= iend-8 .
* @param ip assumed <= iend-8 .
* @param target The target of ZSTD_updateTree_internal() - we are filling to this position
* @return : nb of positions added */
static U32 ZSTD_insertBt1(
ZSTD_matchState_t* ms,
const ZSTD_matchState_t* ms,
const BYTE* const ip, const BYTE* const iend,
U32 const target,
U32 const mls, const int extDict)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
@@ -391,7 +421,10 @@ static U32 ZSTD_insertBt1(
U32* smallerPtr = bt + 2*(curr&btMask);
U32* largerPtr = smallerPtr + 1;
U32 dummy32; /* to be nullified at the end */
U32 const windowLow = ms->window.lowLimit;
/* windowLow is based on target because
* we only need positions that will be in the window at the end of the tree update.
*/
U32 const windowLow = ZSTD_getLowestMatchIndex(ms, target, cParams->windowLog);
U32 matchEndIdx = curr+8+1;
size_t bestLength = 8;
U32 nbCompares = 1U << cParams->searchLog;
@@ -404,11 +437,12 @@ static U32 ZSTD_insertBt1(
DEBUGLOG(8, "ZSTD_insertBt1 (%u)", curr);
assert(curr <= target);
assert(ip <= iend-8); /* required for h calculation */
hashTable[h] = curr; /* Update Hash Table */
assert(windowLow > 0);
while (nbCompares-- && (matchIndex >= windowLow)) {
for (; nbCompares && (matchIndex >= windowLow); --nbCompares) {
U32* const nextPtr = bt + 2*(matchIndex & btMask);
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
assert(matchIndex < curr);
@@ -492,7 +526,7 @@ void ZSTD_updateTree_internal(
idx, target, dictMode);
while(idx < target) {
U32 const forward = ZSTD_insertBt1(ms, base+idx, iend, mls, dictMode == ZSTD_extDict);
U32 const forward = ZSTD_insertBt1(ms, base+idx, iend, target, mls, dictMode == ZSTD_extDict);
assert(idx < (U32)(idx + forward));
idx += forward;
}
@@ -635,11 +669,11 @@ U32 ZSTD_insertBtAndGetAllMatches (
return 1;
} } }
/* no dictMatchState lookup: dicts don't have a populated HC3 table */
}
} /* if (mls == 3) */
hashTable[h] = curr; /* Update Hash Table */
while (nbCompares-- && (matchIndex >= matchLow)) {
for (; nbCompares && (matchIndex >= matchLow); --nbCompares) {
U32* const nextPtr = bt + 2*(matchIndex & btMask);
const BYTE* match;
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
@@ -672,8 +706,7 @@ U32 ZSTD_insertBtAndGetAllMatches (
| (ip+matchLength == iLimit) /* equal : no way to know if inf or sup */) {
if (dictMode == ZSTD_dictMatchState) nbCompares = 0; /* break should also skip searching dms */
break; /* drop, to preserve bt consistency (miss a little bit of compression) */
}
}
} }
if (match[matchLength] < ip[matchLength]) {
/* match smaller than current */
@@ -692,12 +725,13 @@ U32 ZSTD_insertBtAndGetAllMatches (
*smallerPtr = *largerPtr = 0;
assert(nbCompares <= (1U << ZSTD_SEARCHLOG_MAX)); /* Check we haven't underflowed. */
if (dictMode == ZSTD_dictMatchState && nbCompares) {
size_t const dmsH = ZSTD_hashPtr(ip, dmsHashLog, mls);
U32 dictMatchIndex = dms->hashTable[dmsH];
const U32* const dmsBt = dms->chainTable;
commonLengthSmaller = commonLengthLarger = 0;
while (nbCompares-- && (dictMatchIndex > dmsLowLimit)) {
for (; nbCompares && (dictMatchIndex > dmsLowLimit); --nbCompares) {
const U32* const nextPtr = dmsBt + 2*(dictMatchIndex & dmsBtMask);
size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
const BYTE* match = dmsBase + dictMatchIndex;
@@ -718,8 +752,7 @@ U32 ZSTD_insertBtAndGetAllMatches (
if ( (matchLength > ZSTD_OPT_NUM)
| (ip+matchLength == iLimit) /* equal : no way to know if inf or sup */) {
break; /* drop, to guarantee consistency (miss a little bit of compression) */
}
}
} }
if (dictMatchIndex <= dmsBtLow) { break; } /* beyond tree size, stop the search */
if (match[matchLength] < ip[matchLength]) {
@@ -729,39 +762,90 @@ U32 ZSTD_insertBtAndGetAllMatches (
/* match is larger than current */
commonLengthLarger = matchLength;
dictMatchIndex = nextPtr[0];
}
}
}
} } } /* if (dictMode == ZSTD_dictMatchState) */
assert(matchEndIdx > curr+8);
ms->nextToUpdate = matchEndIdx - 8; /* skip repetitive patterns */
return mnum;
}
typedef U32 (*ZSTD_getAllMatchesFn)(
ZSTD_match_t*,
ZSTD_matchState_t*,
U32*,
const BYTE*,
const BYTE*,
const U32 rep[ZSTD_REP_NUM],
U32 const ll0,
U32 const lengthToBeat);
FORCE_INLINE_TEMPLATE U32 ZSTD_BtGetAllMatches (
ZSTD_match_t* matches, /* store result (match found, increasing size) in this table */
ZSTD_matchState_t* ms,
U32* nextToUpdate3,
const BYTE* ip, const BYTE* const iHighLimit, const ZSTD_dictMode_e dictMode,
const U32 rep[ZSTD_REP_NUM],
U32 const ll0,
U32 const lengthToBeat)
FORCE_INLINE_TEMPLATE U32 ZSTD_btGetAllMatches_internal(
ZSTD_match_t* matches,
ZSTD_matchState_t* ms,
U32* nextToUpdate3,
const BYTE* ip,
const BYTE* const iHighLimit,
const U32 rep[ZSTD_REP_NUM],
U32 const ll0,
U32 const lengthToBeat,
const ZSTD_dictMode_e dictMode,
const U32 mls)
{
const ZSTD_compressionParameters* const cParams = &ms->cParams;
U32 const matchLengthSearch = cParams->minMatch;
DEBUGLOG(8, "ZSTD_BtGetAllMatches");
if (ip < ms->window.base + ms->nextToUpdate) return 0; /* skipped area */
ZSTD_updateTree_internal(ms, ip, iHighLimit, matchLengthSearch, dictMode);
switch(matchLengthSearch)
{
case 3 : return ZSTD_insertBtAndGetAllMatches(matches, ms, nextToUpdate3, ip, iHighLimit, dictMode, rep, ll0, lengthToBeat, 3);
default :
case 4 : return ZSTD_insertBtAndGetAllMatches(matches, ms, nextToUpdate3, ip, iHighLimit, dictMode, rep, ll0, lengthToBeat, 4);
case 5 : return ZSTD_insertBtAndGetAllMatches(matches, ms, nextToUpdate3, ip, iHighLimit, dictMode, rep, ll0, lengthToBeat, 5);
case 7 :
case 6 : return ZSTD_insertBtAndGetAllMatches(matches, ms, nextToUpdate3, ip, iHighLimit, dictMode, rep, ll0, lengthToBeat, 6);
assert(BOUNDED(3, ms->cParams.minMatch, 6) == mls);
DEBUGLOG(8, "ZSTD_BtGetAllMatches(dictMode=%d, mls=%u)", (int)dictMode, mls);
if (ip < ms->window.base + ms->nextToUpdate)
return 0; /* skipped area */
ZSTD_updateTree_internal(ms, ip, iHighLimit, mls, dictMode);
return ZSTD_insertBtAndGetAllMatches(matches, ms, nextToUpdate3, ip, iHighLimit, dictMode, rep, ll0, lengthToBeat, mls);
}
#define ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, mls) ZSTD_btGetAllMatches_##dictMode##_##mls
#define GEN_ZSTD_BT_GET_ALL_MATCHES_(dictMode, mls) \
static U32 ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, mls)( \
ZSTD_match_t* matches, \
ZSTD_matchState_t* ms, \
U32* nextToUpdate3, \
const BYTE* ip, \
const BYTE* const iHighLimit, \
const U32 rep[ZSTD_REP_NUM], \
U32 const ll0, \
U32 const lengthToBeat) \
{ \
return ZSTD_btGetAllMatches_internal( \
matches, ms, nextToUpdate3, ip, iHighLimit, \
rep, ll0, lengthToBeat, ZSTD_##dictMode, mls); \
}
#define GEN_ZSTD_BT_GET_ALL_MATCHES(dictMode) \
GEN_ZSTD_BT_GET_ALL_MATCHES_(dictMode, 3) \
GEN_ZSTD_BT_GET_ALL_MATCHES_(dictMode, 4) \
GEN_ZSTD_BT_GET_ALL_MATCHES_(dictMode, 5) \
GEN_ZSTD_BT_GET_ALL_MATCHES_(dictMode, 6)
GEN_ZSTD_BT_GET_ALL_MATCHES(noDict)
GEN_ZSTD_BT_GET_ALL_MATCHES(extDict)
GEN_ZSTD_BT_GET_ALL_MATCHES(dictMatchState)
#define ZSTD_BT_GET_ALL_MATCHES_ARRAY(dictMode) \
{ \
ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, 3), \
ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, 4), \
ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, 5), \
ZSTD_BT_GET_ALL_MATCHES_FN(dictMode, 6) \
}
static ZSTD_getAllMatchesFn ZSTD_selectBtGetAllMatches(ZSTD_matchState_t const* ms, ZSTD_dictMode_e const dictMode)
{
ZSTD_getAllMatchesFn const getAllMatchesFns[3][4] = {
ZSTD_BT_GET_ALL_MATCHES_ARRAY(noDict),
ZSTD_BT_GET_ALL_MATCHES_ARRAY(extDict),
ZSTD_BT_GET_ALL_MATCHES_ARRAY(dictMatchState)
};
U32 const mls = BOUNDED(3, ms->cParams.minMatch, 6);
assert((U32)dictMode < 3);
assert(mls - 3 < 4);
return getAllMatchesFns[(int)dictMode][mls - 3];
}
/*************************
@@ -893,17 +977,17 @@ static void ZSTD_optLdm_processMatchCandidate(ZSTD_optLdm_t* optLdm, ZSTD_match_
*/
U32 posOvershoot = currPosInBlock - optLdm->endPosInBlock;
ZSTD_optLdm_skipRawSeqStoreBytes(&optLdm->seqStore, posOvershoot);
}
}
ZSTD_opt_getNextMatchAndUpdateSeqStore(optLdm, currPosInBlock, remainingBytes);
}
ZSTD_optLdm_maybeAddMatch(matches, nbMatches, optLdm, currPosInBlock);
}
/*-*******************************
* Optimal parser
*********************************/
static U32 ZSTD_totalLen(ZSTD_optimal_t sol)
{
return sol.litlen + sol.mlen;
@@ -944,6 +1028,8 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
const BYTE* const prefixStart = base + ms->window.dictLimit;
const ZSTD_compressionParameters* const cParams = &ms->cParams;
ZSTD_getAllMatchesFn getAllMatches = ZSTD_selectBtGetAllMatches(ms, dictMode);
U32 const sufficient_len = MIN(cParams->targetLength, ZSTD_OPT_NUM -1);
U32 const minMatch = (cParams->minMatch == 3) ? 3 : 4;
U32 nextToUpdate3 = ms->nextToUpdate;
@@ -971,7 +1057,7 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
/* find first match */
{ U32 const litlen = (U32)(ip - anchor);
U32 const ll0 = !litlen;
U32 nbMatches = ZSTD_BtGetAllMatches(matches, ms, &nextToUpdate3, ip, iend, dictMode, rep, ll0, minMatch);
U32 nbMatches = getAllMatches(matches, ms, &nextToUpdate3, ip, iend, rep, ll0, minMatch);
ZSTD_optLdm_processMatchCandidate(&optLdm, matches, &nbMatches,
(U32)(ip-istart), (U32)(iend - ip));
if (!nbMatches) { ip++; continue; }
@@ -985,7 +1071,7 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
* in every price. We include the literal length to avoid negative
* prices when we subtract the previous literal length.
*/
opt[0].price = ZSTD_litLengthPrice(litlen, optStatePtr, optLevel);
opt[0].price = (int)ZSTD_litLengthPrice(litlen, optStatePtr, optLevel);
/* large match -> immediate encoding */
{ U32 const maxML = matches[nbMatches-1].len;
@@ -1005,7 +1091,8 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
} }
/* set prices for first matches starting position == 0 */
{ U32 const literalsPrice = opt[0].price + ZSTD_litLengthPrice(0, optStatePtr, optLevel);
assert(opt[0].price >= 0);
{ U32 const literalsPrice = (U32)opt[0].price + ZSTD_litLengthPrice(0, optStatePtr, optLevel);
U32 pos;
U32 matchNb;
for (pos = 1; pos < minMatch; pos++) {
@@ -1022,7 +1109,7 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
opt[pos].mlen = pos;
opt[pos].off = offset;
opt[pos].litlen = litlen;
opt[pos].price = sequencePrice;
opt[pos].price = (int)sequencePrice;
} }
last_pos = pos-1;
}
@@ -1037,9 +1124,9 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
/* Fix current position with one literal if cheaper */
{ U32 const litlen = (opt[cur-1].mlen == 0) ? opt[cur-1].litlen + 1 : 1;
int const price = opt[cur-1].price
+ ZSTD_rawLiteralsCost(ip+cur-1, 1, optStatePtr, optLevel)
+ ZSTD_litLengthPrice(litlen, optStatePtr, optLevel)
- ZSTD_litLengthPrice(litlen-1, optStatePtr, optLevel);
+ (int)ZSTD_rawLiteralsCost(ip+cur-1, 1, optStatePtr, optLevel)
+ (int)ZSTD_litLengthPrice(litlen, optStatePtr, optLevel)
- (int)ZSTD_litLengthPrice(litlen-1, optStatePtr, optLevel);
assert(price < 1000000000); /* overflow check */
if (price <= opt[cur].price) {
DEBUGLOG(7, "cPos:%zi==rPos:%u : better price (%.2f<=%.2f) using literal (ll==%u) (hist:%u,%u,%u)",
@@ -1082,11 +1169,12 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
continue; /* skip unpromising positions; about ~+6% speed, -0.01 ratio */
}
assert(opt[cur].price >= 0);
{ U32 const ll0 = (opt[cur].mlen != 0);
U32 const litlen = (opt[cur].mlen == 0) ? opt[cur].litlen : 0;
U32 const previousPrice = opt[cur].price;
U32 const previousPrice = (U32)opt[cur].price;
U32 const basePrice = previousPrice + ZSTD_litLengthPrice(0, optStatePtr, optLevel);
U32 nbMatches = ZSTD_BtGetAllMatches(matches, ms, &nextToUpdate3, inr, iend, dictMode, opt[cur].rep, ll0, minMatch);
U32 nbMatches = getAllMatches(matches, ms, &nextToUpdate3, inr, iend, opt[cur].rep, ll0, minMatch);
U32 matchNb;
ZSTD_optLdm_processMatchCandidate(&optLdm, matches, &nbMatches,
@@ -1124,7 +1212,7 @@ ZSTD_compressBlock_opt_generic(ZSTD_matchState_t* ms,
for (mlen = lastML; mlen >= startML; mlen--) { /* scan downward */
U32 const pos = cur + mlen;
int const price = basePrice + ZSTD_getMatchPrice(offset, mlen, optStatePtr, optLevel);
int const price = (int)basePrice + (int)ZSTD_getMatchPrice(offset, mlen, optStatePtr, optLevel);
if ((pos > last_pos) || (price < opt[pos].price)) {
DEBUGLOG(7, "rPos:%u (ml=%2u) => new better price (%.2f<%.2f)",
@@ -1210,38 +1298,30 @@ _shortestPath: /* cur, last_pos, best_mlen, best_off have to be set */
return (size_t)(iend - anchor);
}
static size_t ZSTD_compressBlock_opt0(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize, const ZSTD_dictMode_e dictMode)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 0 /* optLevel */, dictMode);
}
static size_t ZSTD_compressBlock_opt2(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize, const ZSTD_dictMode_e dictMode)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /* optLevel */, dictMode);
}
size_t ZSTD_compressBlock_btopt(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize)
{
DEBUGLOG(5, "ZSTD_compressBlock_btopt");
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 0 /*optLevel*/, ZSTD_noDict);
return ZSTD_compressBlock_opt0(ms, seqStore, rep, src, srcSize, ZSTD_noDict);
}
/* used in 2-pass strategy */
static U32 ZSTD_upscaleStat(unsigned* table, U32 lastEltIndex, int bonus)
{
U32 s, sum=0;
assert(ZSTD_FREQ_DIV+bonus >= 0);
for (s=0; s<lastEltIndex+1; s++) {
table[s] <<= ZSTD_FREQ_DIV+bonus;
table[s]--;
sum += table[s];
}
return sum;
}
/* used in 2-pass strategy */
MEM_STATIC void ZSTD_upscaleStats(optState_t* optPtr)
{
if (ZSTD_compressedLiterals(optPtr))
optPtr->litSum = ZSTD_upscaleStat(optPtr->litFreq, MaxLit, 0);
optPtr->litLengthSum = ZSTD_upscaleStat(optPtr->litLengthFreq, MaxLL, 0);
optPtr->matchLengthSum = ZSTD_upscaleStat(optPtr->matchLengthFreq, MaxML, 0);
optPtr->offCodeSum = ZSTD_upscaleStat(optPtr->offCodeFreq, MaxOff, 0);
}
/* ZSTD_initStats_ultra():
* make a first compression pass, just to seed stats with more accurate starting values.
@@ -1263,7 +1343,7 @@ ZSTD_initStats_ultra(ZSTD_matchState_t* ms,
assert(ms->window.dictLimit == ms->window.lowLimit); /* no dictionary */
assert(ms->window.dictLimit - ms->nextToUpdate <= 1); /* no prefix (note: intentional overflow, defined as 2-complement) */
ZSTD_compressBlock_opt_generic(ms, seqStore, tmpRep, src, srcSize, 2 /*optLevel*/, ZSTD_noDict); /* generate stats into ms->opt*/
ZSTD_compressBlock_opt2(ms, seqStore, tmpRep, src, srcSize, ZSTD_noDict); /* generate stats into ms->opt*/
/* invalidate first scan from history */
ZSTD_resetSeqStore(seqStore);
@@ -1272,8 +1352,6 @@ ZSTD_initStats_ultra(ZSTD_matchState_t* ms,
ms->window.lowLimit = ms->window.dictLimit;
ms->nextToUpdate = ms->window.dictLimit;
/* re-inforce weight of collected statistics */
ZSTD_upscaleStats(&ms->opt);
}
size_t ZSTD_compressBlock_btultra(
@@ -1281,7 +1359,7 @@ size_t ZSTD_compressBlock_btultra(
const void* src, size_t srcSize)
{
DEBUGLOG(5, "ZSTD_compressBlock_btultra (srcSize=%zu)", srcSize);
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /*optLevel*/, ZSTD_noDict);
return ZSTD_compressBlock_opt2(ms, seqStore, rep, src, srcSize, ZSTD_noDict);
}
size_t ZSTD_compressBlock_btultra2(
@@ -1309,35 +1387,35 @@ size_t ZSTD_compressBlock_btultra2(
ZSTD_initStats_ultra(ms, seqStore, rep, src, srcSize);
}
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /*optLevel*/, ZSTD_noDict);
return ZSTD_compressBlock_opt2(ms, seqStore, rep, src, srcSize, ZSTD_noDict);
}
size_t ZSTD_compressBlock_btopt_dictMatchState(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 0 /*optLevel*/, ZSTD_dictMatchState);
return ZSTD_compressBlock_opt0(ms, seqStore, rep, src, srcSize, ZSTD_dictMatchState);
}
size_t ZSTD_compressBlock_btultra_dictMatchState(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /*optLevel*/, ZSTD_dictMatchState);
return ZSTD_compressBlock_opt2(ms, seqStore, rep, src, srcSize, ZSTD_dictMatchState);
}
size_t ZSTD_compressBlock_btopt_extDict(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 0 /*optLevel*/, ZSTD_extDict);
return ZSTD_compressBlock_opt0(ms, seqStore, rep, src, srcSize, ZSTD_extDict);
}
size_t ZSTD_compressBlock_btultra_extDict(
ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
const void* src, size_t srcSize)
{
return ZSTD_compressBlock_opt_generic(ms, seqStore, rep, src, srcSize, 2 /*optLevel*/, ZSTD_extDict);
return ZSTD_compressBlock_opt2(ms, seqStore, rep, src, srcSize, ZSTD_extDict);
}
/* note : no btultra2 variant for extDict nor dictMatchState,
lib/compress/zstdmt_compress.c
+59 -29
View File
@@ -467,7 +467,7 @@ ZSTDMT_serialState_reset(serialState_t* serialState,
ZSTD_dictContentType_e dictContentType)
{
/* Adjust parameters */
if (params.ldmParams.enableLdm) {
if (params.ldmParams.enableLdm == ZSTD_ps_enable) {
DEBUGLOG(4, "LDM window size = %u KB", (1U << params.cParams.windowLog) >> 10);
ZSTD_ldm_adjustParameters(&params.ldmParams, &params.cParams);
assert(params.ldmParams.hashLog >= params.ldmParams.bucketSizeLog);
@@ -478,7 +478,7 @@ ZSTDMT_serialState_reset(serialState_t* serialState,
serialState->nextJobID = 0;
if (params.fParams.checksumFlag)
XXH64_reset(&serialState->xxhState, 0);
if (params.ldmParams.enableLdm) {
if (params.ldmParams.enableLdm == ZSTD_ps_enable) {
ZSTD_customMem cMem = params.customMem;
unsigned const hashLog = params.ldmParams.hashLog;
size_t const hashSize = ((size_t)1 << hashLog) * sizeof(ldmEntry_t);
@@ -564,7 +564,7 @@ static void ZSTDMT_serialState_update(serialState_t* serialState,
/* A future job may error and skip our job */
if (serialState->nextJobID == jobID) {
/* It is now our turn, do any processing necessary */
if (serialState->params.ldmParams.enableLdm) {
if (serialState->params.ldmParams.enableLdm == ZSTD_ps_enable) {
size_t error;
assert(seqStore.seq != NULL && seqStore.pos == 0 &&
seqStore.size == 0 && seqStore.capacity > 0);
@@ -594,7 +594,7 @@ static void ZSTDMT_serialState_update(serialState_t* serialState,
if (seqStore.size > 0) {
size_t const err = ZSTD_referenceExternalSequences(
jobCCtx, seqStore.seq, seqStore.size);
assert(serialState->params.ldmParams.enableLdm);
assert(serialState->params.ldmParams.enableLdm == ZSTD_ps_enable);
assert(!ZSTD_isError(err));
(void)err;
}
@@ -672,7 +672,7 @@ static void ZSTDMT_compressionJob(void* jobDescription)
if (dstBuff.start==NULL) JOB_ERROR(ERROR(memory_allocation));
job->dstBuff = dstBuff; /* this value can be read in ZSTDMT_flush, when it copies the whole job */
}
if (jobParams.ldmParams.enableLdm && rawSeqStore.seq == NULL)
if (jobParams.ldmParams.enableLdm == ZSTD_ps_enable && rawSeqStore.seq == NULL)
JOB_ERROR(ERROR(memory_allocation));
/* Don't compute the checksum for chunks, since we compute it externally,
@@ -680,7 +680,7 @@ static void ZSTDMT_compressionJob(void* jobDescription)
*/
if (job->jobID != 0) jobParams.fParams.checksumFlag = 0;
/* Don't run LDM for the chunks, since we handle it externally */
jobParams.ldmParams.enableLdm = 0;
jobParams.ldmParams.enableLdm = ZSTD_ps_disable;
/* Correct nbWorkers to 0. */
jobParams.nbWorkers = 0;
@@ -807,6 +807,15 @@ typedef struct {
static const roundBuff_t kNullRoundBuff = {NULL, 0, 0};
#define RSYNC_LENGTH 32
/* Don't create chunks smaller than the zstd block size.
* This stops us from regressing compression ratio too much,
* and ensures our output fits in ZSTD_compressBound().
*
* If this is shrunk < ZSTD_BLOCKSIZELOG_MIN then
* ZSTD_COMPRESSBOUND() will need to be updated.
*/
#define RSYNC_MIN_BLOCK_LOG ZSTD_BLOCKSIZELOG_MAX
#define RSYNC_MIN_BLOCK_SIZE (1<<RSYNC_MIN_BLOCK_LOG)
typedef struct {
U64 hash;
@@ -1135,7 +1144,7 @@ size_t ZSTDMT_toFlushNow(ZSTDMT_CCtx* mtctx)
static unsigned ZSTDMT_computeTargetJobLog(const ZSTD_CCtx_params* params)
{
unsigned jobLog;
if (params->ldmParams.enableLdm) {
if (params->ldmParams.enableLdm == ZSTD_ps_enable) {
/* In Long Range Mode, the windowLog is typically oversized.
* In which case, it's preferable to determine the jobSize
* based on cycleLog instead. */
@@ -1179,7 +1188,7 @@ static size_t ZSTDMT_computeOverlapSize(const ZSTD_CCtx_params* params)
int const overlapRLog = 9 - ZSTDMT_overlapLog(params->overlapLog, params->cParams.strategy);
int ovLog = (overlapRLog >= 8) ? 0 : (params->cParams.windowLog - overlapRLog);
assert(0 <= overlapRLog && overlapRLog <= 8);
if (params->ldmParams.enableLdm) {
if (params->ldmParams.enableLdm == ZSTD_ps_enable) {
/* In Long Range Mode, the windowLog is typically oversized.
* In which case, it's preferable to determine the jobSize
* based on chainLog instead.
@@ -1252,6 +1261,9 @@ size_t ZSTDMT_initCStream_internal(
/* Aim for the targetsectionSize as the average job size. */
U32 const jobSizeKB = (U32)(mtctx->targetSectionSize >> 10);
U32 const rsyncBits = (assert(jobSizeKB >= 1), ZSTD_highbit32(jobSizeKB) + 10);
/* We refuse to create jobs < RSYNC_MIN_BLOCK_SIZE bytes, so make sure our
* expected job size is at least 4x larger. */
assert(rsyncBits >= RSYNC_MIN_BLOCK_LOG + 2);
DEBUGLOG(4, "rsyncLog = %u", rsyncBits);
mtctx->rsync.hash = 0;
mtctx->rsync.hitMask = (1ULL << rsyncBits) - 1;
@@ -1263,7 +1275,7 @@ size_t ZSTDMT_initCStream_internal(
ZSTDMT_setBufferSize(mtctx->bufPool, ZSTD_compressBound(mtctx->targetSectionSize));
{
/* If ldm is enabled we need windowSize space. */
size_t const windowSize = mtctx->params.ldmParams.enableLdm ? (1U << mtctx->params.cParams.windowLog) : 0;
size_t const windowSize = mtctx->params.ldmParams.enableLdm == ZSTD_ps_enable ? (1U << mtctx->params.cParams.windowLog) : 0;
/* Two buffers of slack, plus extra space for the overlap
* This is the minimum slack that LDM works with. One extra because
* flush might waste up to targetSectionSize-1 bytes. Another extra
@@ -1538,17 +1550,21 @@ static range_t ZSTDMT_getInputDataInUse(ZSTDMT_CCtx* mtctx)
static int ZSTDMT_isOverlapped(buffer_t buffer, range_t range)
{
BYTE const* const bufferStart = (BYTE const*)buffer.start;
BYTE const* const bufferEnd = bufferStart + buffer.capacity;
BYTE const* const rangeStart = (BYTE const*)range.start;
BYTE const* const rangeEnd = range.size != 0 ? rangeStart + range.size : rangeStart;
if (rangeStart == NULL || bufferStart == NULL)
return 0;
/* Empty ranges cannot overlap */
if (bufferStart == bufferEnd || rangeStart == rangeEnd)
return 0;
return bufferStart < rangeEnd && rangeStart < bufferEnd;
{
BYTE const* const bufferEnd = bufferStart + buffer.capacity;
BYTE const* const rangeEnd = rangeStart + range.size;
/* Empty ranges cannot overlap */
if (bufferStart == bufferEnd || rangeStart == rangeEnd)
return 0;
return bufferStart < rangeEnd && rangeStart < bufferEnd;
}
}
static int ZSTDMT_doesOverlapWindow(buffer_t buffer, ZSTD_window_t window)
@@ -1575,7 +1591,7 @@ static int ZSTDMT_doesOverlapWindow(buffer_t buffer, ZSTD_window_t window)
static void ZSTDMT_waitForLdmComplete(ZSTDMT_CCtx* mtctx, buffer_t buffer)
{
if (mtctx->params.ldmParams.enableLdm) {
if (mtctx->params.ldmParams.enableLdm == ZSTD_ps_enable) {
ZSTD_pthread_mutex_t* mutex = &mtctx->serial.ldmWindowMutex;
DEBUGLOG(5, "ZSTDMT_waitForLdmComplete");
DEBUGLOG(5, "source [0x%zx, 0x%zx)",
@@ -1678,6 +1694,11 @@ findSynchronizationPoint(ZSTDMT_CCtx const* mtctx, ZSTD_inBuffer const input)
if (!mtctx->params.rsyncable)
/* Rsync is disabled. */
return syncPoint;
if (mtctx->inBuff.filled + input.size - input.pos < RSYNC_MIN_BLOCK_SIZE)
/* We don't emit synchronization points if it would produce too small blocks.
* We don't have enough input to find a synchronization point, so don't look.
*/
return syncPoint;
if (mtctx->inBuff.filled + syncPoint.toLoad < RSYNC_LENGTH)
/* Not enough to compute the hash.
* We will miss any synchronization points in this RSYNC_LENGTH byte
@@ -1688,10 +1709,28 @@ findSynchronizationPoint(ZSTDMT_CCtx const* mtctx, ZSTD_inBuffer const input)
*/
return syncPoint;
/* Initialize the loop variables. */
if (mtctx->inBuff.filled >= RSYNC_LENGTH) {
/* We have enough bytes buffered to initialize the hash.
if (mtctx->inBuff.filled < RSYNC_MIN_BLOCK_SIZE) {
/* We don't need to scan the first RSYNC_MIN_BLOCK_SIZE positions
* because they can't possibly be a sync point. So we can start
* part way through the input buffer.
*/
pos = RSYNC_MIN_BLOCK_SIZE - mtctx->inBuff.filled;
if (pos >= RSYNC_LENGTH) {
prev = istart + pos - RSYNC_LENGTH;
hash = ZSTD_rollingHash_compute(prev, RSYNC_LENGTH);
} else {
assert(mtctx->inBuff.filled >= RSYNC_LENGTH);
prev = (BYTE const*)mtctx->inBuff.buffer.start + mtctx->inBuff.filled - RSYNC_LENGTH;
hash = ZSTD_rollingHash_compute(prev + pos, (RSYNC_LENGTH - pos));
hash = ZSTD_rollingHash_append(hash, istart, pos);
}
} else {
/* We have enough bytes buffered to initialize the hash,
* and are have processed enough bytes to find a sync point.
* Start scanning at the beginning of the input.
*/
assert(mtctx->inBuff.filled >= RSYNC_MIN_BLOCK_SIZE);
assert(RSYNC_MIN_BLOCK_SIZE >= RSYNC_LENGTH);
pos = 0;
prev = (BYTE const*)mtctx->inBuff.buffer.start + mtctx->inBuff.filled - RSYNC_LENGTH;
hash = ZSTD_rollingHash_compute(prev, RSYNC_LENGTH);
@@ -1705,16 +1744,6 @@ findSynchronizationPoint(ZSTDMT_CCtx const* mtctx, ZSTD_inBuffer const input)
syncPoint.flush = 1;
return syncPoint;
}
} else {
/* We don't have enough bytes buffered to initialize the hash, but
* we know we have at least RSYNC_LENGTH bytes total.
* Start scanning after the first RSYNC_LENGTH bytes less the bytes
* already buffered.
*/
pos = RSYNC_LENGTH - mtctx->inBuff.filled;
prev = (BYTE const*)mtctx->inBuff.buffer.start - pos;
hash = ZSTD_rollingHash_compute(mtctx->inBuff.buffer.start, mtctx->inBuff.filled);
hash = ZSTD_rollingHash_append(hash, istart, pos);
}
/* Starting with the hash of the previous RSYNC_LENGTH bytes, roll
* through the input. If we hit a synchronization point, then cut the
@@ -1726,8 +1755,9 @@ findSynchronizationPoint(ZSTDMT_CCtx const* mtctx, ZSTD_inBuffer const input)
*/
for (; pos < syncPoint.toLoad; ++pos) {
BYTE const toRemove = pos < RSYNC_LENGTH ? prev[pos] : istart[pos - RSYNC_LENGTH];
/* if (pos >= RSYNC_LENGTH) assert(ZSTD_rollingHash_compute(istart + pos - RSYNC_LENGTH, RSYNC_LENGTH) == hash); */
assert(pos < RSYNC_LENGTH || ZSTD_rollingHash_compute(istart + pos - RSYNC_LENGTH, RSYNC_LENGTH) == hash);
hash = ZSTD_rollingHash_rotate(hash, toRemove, istart[pos], primePower);
assert(mtctx->inBuff.filled + pos >= RSYNC_MIN_BLOCK_SIZE);
if ((hash & hitMask) == hitMask) {
syncPoint.toLoad = pos + 1;
syncPoint.flush = 1;
lib/decompress/huf_decompress.c
+726 -188
View File
@@ -22,6 +22,13 @@
#define HUF_STATIC_LINKING_ONLY
#include "../common/huf.h"
#include "../common/error_private.h"
#include "../common/zstd_internal.h"
/* **************************************************************
* Constants
****************************************************************/
#define HUF_DECODER_FAST_TABLELOG 11
/* **************************************************************
* Macros
@@ -36,6 +43,30 @@
#error "Cannot force the use of the X1 and X2 decoders at the same time!"
#endif
#if ZSTD_ENABLE_ASM_X86_64_BMI2 && DYNAMIC_BMI2
# define HUF_ASM_X86_64_BMI2_ATTRS BMI2_TARGET_ATTRIBUTE
#else
# define HUF_ASM_X86_64_BMI2_ATTRS
#endif
#ifdef __cplusplus
# define HUF_EXTERN_C extern "C"
#else
# define HUF_EXTERN_C
#endif
#define HUF_ASM_DECL HUF_EXTERN_C
#if DYNAMIC_BMI2 || (ZSTD_ENABLE_ASM_X86_64_BMI2 && defined(__BMI2__))
# define HUF_NEED_BMI2_FUNCTION 1
#else
# define HUF_NEED_BMI2_FUNCTION 0
#endif
#if !(ZSTD_ENABLE_ASM_X86_64_BMI2 && defined(__BMI2__))
# define HUF_NEED_DEFAULT_FUNCTION 1
#else
# define HUF_NEED_DEFAULT_FUNCTION 0
#endif
/* **************************************************************
* Error Management
@@ -65,7 +96,7 @@
return fn##_body(dst, dstSize, cSrc, cSrcSize, DTable); \
} \
\
static TARGET_ATTRIBUTE("bmi2") size_t fn##_bmi2( \
static BMI2_TARGET_ATTRIBUTE size_t fn##_bmi2( \
void* dst, size_t dstSize, \
const void* cSrc, size_t cSrcSize, \
const HUF_DTable* DTable) \
@@ -107,13 +138,147 @@ static DTableDesc HUF_getDTableDesc(const HUF_DTable* table)
return dtd;
}
#if ZSTD_ENABLE_ASM_X86_64_BMI2
static size_t HUF_initDStream(BYTE const* ip) {
BYTE const lastByte = ip[7];
size_t const bitsConsumed = lastByte ? 8 - BIT_highbit32(lastByte) : 0;
size_t const value = MEM_readLEST(ip) | 1;
assert(bitsConsumed <= 8);
return value << bitsConsumed;
}
typedef struct {
BYTE const* ip[4];
BYTE* op[4];
U64 bits[4];
void const* dt;
BYTE const* ilimit;
BYTE* oend;
BYTE const* iend[4];
} HUF_DecompressAsmArgs;
/**
* Initializes args for the asm decoding loop.
* @returns 0 on success
* 1 if the fallback implementation should be used.
* Or an error code on failure.
*/
static size_t HUF_DecompressAsmArgs_init(HUF_DecompressAsmArgs* args, void* dst, size_t dstSize, void const* src, size_t srcSize, const HUF_DTable* DTable)
{
void const* dt = DTable + 1;
U32 const dtLog = HUF_getDTableDesc(DTable).tableLog;
const BYTE* const ilimit = (const BYTE*)src + 6 + 8;
BYTE* const oend = (BYTE*)dst + dstSize;
/* The following condition is false on x32 platform,
* but HUF_asm is not compatible with this ABI */
if (!(MEM_isLittleEndian() && !MEM_32bits())) return 1;
/* strict minimum : jump table + 1 byte per stream */
if (srcSize < 10)
return ERROR(corruption_detected);
/* Must have at least 8 bytes per stream because we don't handle initializing smaller bit containers.
* If table log is not correct at this point, fallback to the old decoder.
* On small inputs we don't have enough data to trigger the fast loop, so use the old decoder.
*/
if (dtLog != HUF_DECODER_FAST_TABLELOG)
return 1;
/* Read the jump table. */
{
const BYTE* const istart = (const BYTE*)src;
size_t const length1 = MEM_readLE16(istart);
size_t const length2 = MEM_readLE16(istart+2);
size_t const length3 = MEM_readLE16(istart+4);
size_t const length4 = srcSize - (length1 + length2 + length3 + 6);
args->iend[0] = istart + 6; /* jumpTable */
args->iend[1] = args->iend[0] + length1;
args->iend[2] = args->iend[1] + length2;
args->iend[3] = args->iend[2] + length3;
/* HUF_initDStream() requires this, and this small of an input
* won't benefit from the ASM loop anyways.
* length1 must be >= 16 so that ip[0] >= ilimit before the loop
* starts.
*/
if (length1 < 16 || length2 < 8 || length3 < 8 || length4 < 8)
return 1;
if (length4 > srcSize) return ERROR(corruption_detected); /* overflow */
}
/* ip[] contains the position that is currently loaded into bits[]. */
args->ip[0] = args->iend[1] - sizeof(U64);
args->ip[1] = args->iend[2] - sizeof(U64);
args->ip[2] = args->iend[3] - sizeof(U64);
args->ip[3] = (BYTE const*)src + srcSize - sizeof(U64);
/* op[] contains the output pointers. */
args->op[0] = (BYTE*)dst;
args->op[1] = args->op[0] + (dstSize+3)/4;
args->op[2] = args->op[1] + (dstSize+3)/4;
args->op[3] = args->op[2] + (dstSize+3)/4;
/* No point to call the ASM loop for tiny outputs. */
if (args->op[3] >= oend)
return 1;
/* bits[] is the bit container.
* It is read from the MSB down to the LSB.
* It is shifted left as it is read, and zeros are
* shifted in. After the lowest valid bit a 1 is
* set, so that CountTrailingZeros(bits[]) can be used
* to count how many bits we've consumed.
*/
args->bits[0] = HUF_initDStream(args->ip[0]);
args->bits[1] = HUF_initDStream(args->ip[1]);
args->bits[2] = HUF_initDStream(args->ip[2]);
args->bits[3] = HUF_initDStream(args->ip[3]);
/* If ip[] >= ilimit, it is guaranteed to be safe to
* reload bits[]. It may be beyond its section, but is
* guaranteed to be valid (>= istart).
*/
args->ilimit = ilimit;
args->oend = oend;
args->dt = dt;
return 0;
}
static size_t HUF_initRemainingDStream(BIT_DStream_t* bit, HUF_DecompressAsmArgs const* args, int stream, BYTE* segmentEnd)
{
/* Validate that we haven't overwritten. */
if (args->op[stream] > segmentEnd)
return ERROR(corruption_detected);
/* Validate that we haven't read beyond iend[].
* Note that ip[] may be < iend[] because the MSB is
* the next bit to read, and we may have consumed 100%
* of the stream, so down to iend[i] - 8 is valid.
*/
if (args->ip[stream] < args->iend[stream] - 8)
return ERROR(corruption_detected);
/* Construct the BIT_DStream_t. */
bit->bitContainer = MEM_readLE64(args->ip[stream]);
bit->bitsConsumed = ZSTD_countTrailingZeros((size_t)args->bits[stream]);
bit->start = (const char*)args->iend[0];
bit->limitPtr = bit->start + sizeof(size_t);
bit->ptr = (const char*)args->ip[stream];
return 0;
}
#endif
#ifndef HUF_FORCE_DECOMPRESS_X2
/*-***************************/
/* single-symbol decoding */
/*-***************************/
typedef struct { BYTE byte; BYTE nbBits; } HUF_DEltX1; /* single-symbol decoding */
typedef struct { BYTE nbBits; BYTE byte; } HUF_DEltX1; /* single-symbol decoding */
/**
* Packs 4 HUF_DEltX1 structs into a U64. This is used to lay down 4 entries at
@@ -122,14 +287,44 @@ typedef struct { BYTE byte; BYTE nbBits; } HUF_DEltX1; /* single-symbol decodi
static U64 HUF_DEltX1_set4(BYTE symbol, BYTE nbBits) {
U64 D4;
if (MEM_isLittleEndian()) {
D4 = symbol + (nbBits << 8);
} else {
D4 = (symbol << 8) + nbBits;
} else {
D4 = symbol + (nbBits << 8);
}
D4 *= 0x0001000100010001ULL;
return D4;
}
/**
* Increase the tableLog to targetTableLog and rescales the stats.
* If tableLog > targetTableLog this is a no-op.
* @returns New tableLog
*/
static U32 HUF_rescaleStats(BYTE* huffWeight, U32* rankVal, U32 nbSymbols, U32 tableLog, U32 targetTableLog)
{
if (tableLog > targetTableLog)
return tableLog;
if (tableLog < targetTableLog) {
U32 const scale = targetTableLog - tableLog;
U32 s;
/* Increase the weight for all non-zero probability symbols by scale. */
for (s = 0; s < nbSymbols; ++s) {
huffWeight[s] += (BYTE)((huffWeight[s] == 0) ? 0 : scale);
}
/* Update rankVal to reflect the new weights.
* All weights except 0 get moved to weight + scale.
* Weights [1, scale] are empty.
*/
for (s = targetTableLog; s > scale; --s) {
rankVal[s] = rankVal[s - scale];
}
for (s = scale; s > 0; --s) {
rankVal[s] = 0;
}
}
return targetTableLog;
}
typedef struct {
U32 rankVal[HUF_TABLELOG_ABSOLUTEMAX + 1];
U32 rankStart[HUF_TABLELOG_ABSOLUTEMAX + 1];
@@ -162,8 +357,12 @@ size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t sr
iSize = HUF_readStats_wksp(wksp->huffWeight, HUF_SYMBOLVALUE_MAX + 1, wksp->rankVal, &nbSymbols, &tableLog, src, srcSize, wksp->statsWksp, sizeof(wksp->statsWksp), bmi2);
if (HUF_isError(iSize)) return iSize;
/* Table header */
{ DTableDesc dtd = HUF_getDTableDesc(DTable);
U32 const maxTableLog = dtd.maxTableLog + 1;
U32 const targetTableLog = MIN(maxTableLog, HUF_DECODER_FAST_TABLELOG);
tableLog = HUF_rescaleStats(wksp->huffWeight, wksp->rankVal, nbSymbols, tableLog, targetTableLog);
if (tableLog > (U32)(dtd.maxTableLog+1)) return ERROR(tableLog_tooLarge); /* DTable too small, Huffman tree cannot fit in */
dtd.tableType = 0;
dtd.tableLog = (BYTE)tableLog;
@@ -207,7 +406,7 @@ size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t sr
/* fill DTable
* We fill all entries of each weight in order.
* That way length is a constant for each iteration of the outter loop.
* That way length is a constant for each iteration of the outer loop.
* We can switch based on the length to a different inner loop which is
* optimized for that particular case.
*/
@@ -304,11 +503,15 @@ HUF_decodeStreamX1(BYTE* p, BIT_DStream_t* const bitDPtr, BYTE* const pEnd, cons
BYTE* const pStart = p;
/* up to 4 symbols at a time */
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-3)) {
HUF_DECODE_SYMBOLX1_2(p, bitDPtr);
HUF_DECODE_SYMBOLX1_1(p, bitDPtr);
HUF_DECODE_SYMBOLX1_2(p, bitDPtr);
HUF_DECODE_SYMBOLX1_0(p, bitDPtr);
if ((pEnd - p) > 3) {
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-3)) {
HUF_DECODE_SYMBOLX1_2(p, bitDPtr);
HUF_DECODE_SYMBOLX1_1(p, bitDPtr);
HUF_DECODE_SYMBOLX1_2(p, bitDPtr);
HUF_DECODE_SYMBOLX1_0(p, bitDPtr);
}
} else {
BIT_reloadDStream(bitDPtr);
}
/* [0-3] symbols remaining */
@@ -388,33 +591,36 @@ HUF_decompress4X1_usingDTable_internal_body(
U32 endSignal = 1;
if (length4 > cSrcSize) return ERROR(corruption_detected); /* overflow */
if (opStart4 > oend) return ERROR(corruption_detected); /* overflow */
CHECK_F( BIT_initDStream(&bitD1, istart1, length1) );
CHECK_F( BIT_initDStream(&bitD2, istart2, length2) );
CHECK_F( BIT_initDStream(&bitD3, istart3, length3) );
CHECK_F( BIT_initDStream(&bitD4, istart4, length4) );
/* up to 16 symbols per loop (4 symbols per stream) in 64-bit mode */
for ( ; (endSignal) & (op4 < olimit) ; ) {
HUF_DECODE_SYMBOLX1_2(op1, &bitD1);
HUF_DECODE_SYMBOLX1_2(op2, &bitD2);
HUF_DECODE_SYMBOLX1_2(op3, &bitD3);
HUF_DECODE_SYMBOLX1_2(op4, &bitD4);
HUF_DECODE_SYMBOLX1_1(op1, &bitD1);
HUF_DECODE_SYMBOLX1_1(op2, &bitD2);
HUF_DECODE_SYMBOLX1_1(op3, &bitD3);
HUF_DECODE_SYMBOLX1_1(op4, &bitD4);
HUF_DECODE_SYMBOLX1_2(op1, &bitD1);
HUF_DECODE_SYMBOLX1_2(op2, &bitD2);
HUF_DECODE_SYMBOLX1_2(op3, &bitD3);
HUF_DECODE_SYMBOLX1_2(op4, &bitD4);
HUF_DECODE_SYMBOLX1_0(op1, &bitD1);
HUF_DECODE_SYMBOLX1_0(op2, &bitD2);
HUF_DECODE_SYMBOLX1_0(op3, &bitD3);
HUF_DECODE_SYMBOLX1_0(op4, &bitD4);
endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished;
if ((size_t)(oend - op4) >= sizeof(size_t)) {
for ( ; (endSignal) & (op4 < olimit) ; ) {
HUF_DECODE_SYMBOLX1_2(op1, &bitD1);
HUF_DECODE_SYMBOLX1_2(op2, &bitD2);
HUF_DECODE_SYMBOLX1_2(op3, &bitD3);
HUF_DECODE_SYMBOLX1_2(op4, &bitD4);
HUF_DECODE_SYMBOLX1_1(op1, &bitD1);
HUF_DECODE_SYMBOLX1_1(op2, &bitD2);
HUF_DECODE_SYMBOLX1_1(op3, &bitD3);
HUF_DECODE_SYMBOLX1_1(op4, &bitD4);
HUF_DECODE_SYMBOLX1_2(op1, &bitD1);
HUF_DECODE_SYMBOLX1_2(op2, &bitD2);
HUF_DECODE_SYMBOLX1_2(op3, &bitD3);
HUF_DECODE_SYMBOLX1_2(op4, &bitD4);
HUF_DECODE_SYMBOLX1_0(op1, &bitD1);
HUF_DECODE_SYMBOLX1_0(op2, &bitD2);
HUF_DECODE_SYMBOLX1_0(op3, &bitD3);
HUF_DECODE_SYMBOLX1_0(op4, &bitD4);
endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished;
}
}
/* check corruption */
@@ -440,6 +646,79 @@ HUF_decompress4X1_usingDTable_internal_body(
}
}
#if HUF_NEED_BMI2_FUNCTION
static BMI2_TARGET_ATTRIBUTE
size_t HUF_decompress4X1_usingDTable_internal_bmi2(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X1_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);
}
#endif
#if HUF_NEED_DEFAULT_FUNCTION
static
size_t HUF_decompress4X1_usingDTable_internal_default(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X1_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);
}
#endif
#if ZSTD_ENABLE_ASM_X86_64_BMI2
HUF_ASM_DECL void HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop(HUF_DecompressAsmArgs* args);
static HUF_ASM_X86_64_BMI2_ATTRS
size_t
HUF_decompress4X1_usingDTable_internal_bmi2_asm(
void* dst, size_t dstSize,
const void* cSrc, size_t cSrcSize,
const HUF_DTable* DTable)
{
void const* dt = DTable + 1;
const BYTE* const iend = (const BYTE*)cSrc + 6;
BYTE* const oend = (BYTE*)dst + dstSize;
HUF_DecompressAsmArgs args;
{
size_t const ret = HUF_DecompressAsmArgs_init(&args, dst, dstSize, cSrc, cSrcSize, DTable);
FORWARD_IF_ERROR(ret, "Failed to init asm args");
if (ret != 0)
return HUF_decompress4X1_usingDTable_internal_bmi2(dst, dstSize, cSrc, cSrcSize, DTable);
}
assert(args.ip[0] >= args.ilimit);
HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop(&args);
/* Our loop guarantees that ip[] >= ilimit and that we haven't
* overwritten any op[].
*/
assert(args.ip[0] >= iend);
assert(args.ip[1] >= iend);
assert(args.ip[2] >= iend);
assert(args.ip[3] >= iend);
assert(args.op[3] <= oend);
(void)iend;
/* finish bit streams one by one. */
{
size_t const segmentSize = (dstSize+3) / 4;
BYTE* segmentEnd = (BYTE*)dst;
int i;
for (i = 0; i < 4; ++i) {
BIT_DStream_t bit;
if (segmentSize <= (size_t)(oend - segmentEnd))
segmentEnd += segmentSize;
else
segmentEnd = oend;
FORWARD_IF_ERROR(HUF_initRemainingDStream(&bit, &args, i, segmentEnd), "corruption");
/* Decompress and validate that we've produced exactly the expected length. */
args.op[i] += HUF_decodeStreamX1(args.op[i], &bit, segmentEnd, (HUF_DEltX1 const*)dt, HUF_DECODER_FAST_TABLELOG);
if (args.op[i] != segmentEnd) return ERROR(corruption_detected);
}
}
/* decoded size */
return dstSize;
}
#endif /* ZSTD_ENABLE_ASM_X86_64_BMI2 */
typedef size_t (*HUF_decompress_usingDTable_t)(void *dst, size_t dstSize,
const void *cSrc,
@@ -447,8 +726,28 @@ typedef size_t (*HUF_decompress_usingDTable_t)(void *dst, size_t dstSize,
const HUF_DTable *DTable);
HUF_DGEN(HUF_decompress1X1_usingDTable_internal)
HUF_DGEN(HUF_decompress4X1_usingDTable_internal)
static size_t HUF_decompress4X1_usingDTable_internal(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable, int bmi2)
{
#if DYNAMIC_BMI2
if (bmi2) {
# if ZSTD_ENABLE_ASM_X86_64_BMI2
return HUF_decompress4X1_usingDTable_internal_bmi2_asm(dst, dstSize, cSrc, cSrcSize, DTable);
# else
return HUF_decompress4X1_usingDTable_internal_bmi2(dst, dstSize, cSrc, cSrcSize, DTable);
# endif
}
#else
(void)bmi2;
#endif
#if ZSTD_ENABLE_ASM_X86_64_BMI2 && defined(__BMI2__)
return HUF_decompress4X1_usingDTable_internal_bmi2_asm(dst, dstSize, cSrc, cSrcSize, DTable);
#else
return HUF_decompress4X1_usingDTable_internal_default(dst, dstSize, cSrc, cSrcSize, DTable);
#endif
}
size_t HUF_decompress1X1_usingDTable(
@@ -518,106 +817,226 @@ size_t HUF_decompress4X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize,
/* *************************/
typedef struct { U16 sequence; BYTE nbBits; BYTE length; } HUF_DEltX2; /* double-symbols decoding */
typedef struct { BYTE symbol; BYTE weight; } sortedSymbol_t;
typedef struct { BYTE symbol; } sortedSymbol_t;
typedef U32 rankValCol_t[HUF_TABLELOG_MAX + 1];
typedef rankValCol_t rankVal_t[HUF_TABLELOG_MAX];
/**
* Constructs a HUF_DEltX2 in a U32.
*/
static U32 HUF_buildDEltX2U32(U32 symbol, U32 nbBits, U32 baseSeq, int level)
{
U32 seq;
DEBUG_STATIC_ASSERT(offsetof(HUF_DEltX2, sequence) == 0);
DEBUG_STATIC_ASSERT(offsetof(HUF_DEltX2, nbBits) == 2);
DEBUG_STATIC_ASSERT(offsetof(HUF_DEltX2, length) == 3);
DEBUG_STATIC_ASSERT(sizeof(HUF_DEltX2) == sizeof(U32));
if (MEM_isLittleEndian()) {
seq = level == 1 ? symbol : (baseSeq + (symbol << 8));
return seq + (nbBits << 16) + ((U32)level << 24);
} else {
seq = level == 1 ? (symbol << 8) : ((baseSeq << 8) + symbol);
return (seq << 16) + (nbBits << 8) + (U32)level;
}
}
/**
* Constructs a HUF_DEltX2.
*/
static HUF_DEltX2 HUF_buildDEltX2(U32 symbol, U32 nbBits, U32 baseSeq, int level)
{
HUF_DEltX2 DElt;
U32 const val = HUF_buildDEltX2U32(symbol, nbBits, baseSeq, level);
DEBUG_STATIC_ASSERT(sizeof(DElt) == sizeof(val));
ZSTD_memcpy(&DElt, &val, sizeof(val));
return DElt;
}
/**
* Constructs 2 HUF_DEltX2s and packs them into a U64.
*/
static U64 HUF_buildDEltX2U64(U32 symbol, U32 nbBits, U16 baseSeq, int level)
{
U32 DElt = HUF_buildDEltX2U32(symbol, nbBits, baseSeq, level);
return (U64)DElt + ((U64)DElt << 32);
}
/**
* Fills the DTable rank with all the symbols from [begin, end) that are each
* nbBits long.
*
* @param DTableRank The start of the rank in the DTable.
* @param begin The first symbol to fill (inclusive).
* @param end The last symbol to fill (exclusive).
* @param nbBits Each symbol is nbBits long.
* @param tableLog The table log.
* @param baseSeq If level == 1 { 0 } else { the first level symbol }
* @param level The level in the table. Must be 1 or 2.
*/
static void HUF_fillDTableX2ForWeight(
HUF_DEltX2* DTableRank,
sortedSymbol_t const* begin, sortedSymbol_t const* end,
U32 nbBits, U32 tableLog,
U16 baseSeq, int const level)
{
U32 const length = 1U << ((tableLog - nbBits) & 0x1F /* quiet static-analyzer */);
const sortedSymbol_t* ptr;
assert(level >= 1 && level <= 2);
switch (length) {
case 1:
for (ptr = begin; ptr != end; ++ptr) {
HUF_DEltX2 const DElt = HUF_buildDEltX2(ptr->symbol, nbBits, baseSeq, level);
*DTableRank++ = DElt;
}
break;
case 2:
for (ptr = begin; ptr != end; ++ptr) {
HUF_DEltX2 const DElt = HUF_buildDEltX2(ptr->symbol, nbBits, baseSeq, level);
DTableRank[0] = DElt;
DTableRank[1] = DElt;
DTableRank += 2;
}
break;
case 4:
for (ptr = begin; ptr != end; ++ptr) {
U64 const DEltX2 = HUF_buildDEltX2U64(ptr->symbol, nbBits, baseSeq, level);
ZSTD_memcpy(DTableRank + 0, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 2, &DEltX2, sizeof(DEltX2));
DTableRank += 4;
}
break;
case 8:
for (ptr = begin; ptr != end; ++ptr) {
U64 const DEltX2 = HUF_buildDEltX2U64(ptr->symbol, nbBits, baseSeq, level);
ZSTD_memcpy(DTableRank + 0, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 2, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 4, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 6, &DEltX2, sizeof(DEltX2));
DTableRank += 8;
}
break;
default:
for (ptr = begin; ptr != end; ++ptr) {
U64 const DEltX2 = HUF_buildDEltX2U64(ptr->symbol, nbBits, baseSeq, level);
HUF_DEltX2* const DTableRankEnd = DTableRank + length;
for (; DTableRank != DTableRankEnd; DTableRank += 8) {
ZSTD_memcpy(DTableRank + 0, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 2, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 4, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTableRank + 6, &DEltX2, sizeof(DEltX2));
}
}
break;
}
}
/* HUF_fillDTableX2Level2() :
* `rankValOrigin` must be a table of at least (HUF_TABLELOG_MAX + 1) U32 */
static void HUF_fillDTableX2Level2(HUF_DEltX2* DTable, U32 sizeLog, const U32 consumed,
const U32* rankValOrigin, const int minWeight,
const sortedSymbol_t* sortedSymbols, const U32 sortedListSize,
U32 nbBitsBaseline, U16 baseSeq, U32* wksp, size_t wkspSize)
static void HUF_fillDTableX2Level2(HUF_DEltX2* DTable, U32 targetLog, const U32 consumedBits,
const U32* rankVal, const int minWeight, const int maxWeight1,
const sortedSymbol_t* sortedSymbols, U32 const* rankStart,
U32 nbBitsBaseline, U16 baseSeq)
{
HUF_DEltX2 DElt;
U32* rankVal = wksp;
assert(wkspSize >= HUF_TABLELOG_MAX + 1);
(void)wkspSize;
/* get pre-calculated rankVal */
ZSTD_memcpy(rankVal, rankValOrigin, sizeof(U32) * (HUF_TABLELOG_MAX + 1));
/* fill skipped values */
/* Fill skipped values (all positions up to rankVal[minWeight]).
* These are positions only get a single symbol because the combined weight
* is too large.
*/
if (minWeight>1) {
U32 i, skipSize = rankVal[minWeight];
MEM_writeLE16(&(DElt.sequence), baseSeq);
DElt.nbBits = (BYTE)(consumed);
DElt.length = 1;
for (i = 0; i < skipSize; i++)
DTable[i] = DElt;
U32 const length = 1U << ((targetLog - consumedBits) & 0x1F /* quiet static-analyzer */);
U64 const DEltX2 = HUF_buildDEltX2U64(baseSeq, consumedBits, /* baseSeq */ 0, /* level */ 1);
int const skipSize = rankVal[minWeight];
assert(length > 1);
assert((U32)skipSize < length);
switch (length) {
case 2:
assert(skipSize == 1);
ZSTD_memcpy(DTable, &DEltX2, sizeof(DEltX2));
break;
case 4:
assert(skipSize <= 4);
ZSTD_memcpy(DTable + 0, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTable + 2, &DEltX2, sizeof(DEltX2));
break;
default:
{
int i;
for (i = 0; i < skipSize; i += 8) {
ZSTD_memcpy(DTable + i + 0, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTable + i + 2, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTable + i + 4, &DEltX2, sizeof(DEltX2));
ZSTD_memcpy(DTable + i + 6, &DEltX2, sizeof(DEltX2));
}
}
}
}
/* fill DTable */
{ U32 s; for (s=0; s<sortedListSize; s++) { /* note : sortedSymbols already skipped */
const U32 symbol = sortedSymbols[s].symbol;
const U32 weight = sortedSymbols[s].weight;
const U32 nbBits = nbBitsBaseline - weight;
const U32 length = 1 << (sizeLog-nbBits);
const U32 start = rankVal[weight];
U32 i = start;
const U32 end = start + length;
MEM_writeLE16(&(DElt.sequence), (U16)(baseSeq + (symbol << 8)));
DElt.nbBits = (BYTE)(nbBits + consumed);
DElt.length = 2;
do { DTable[i++] = DElt; } while (i<end); /* since length >= 1 */
rankVal[weight] += length;
} }
/* Fill each of the second level symbols by weight. */
{
int w;
for (w = minWeight; w < maxWeight1; ++w) {
int const begin = rankStart[w];
int const end = rankStart[w+1];
U32 const nbBits = nbBitsBaseline - w;
U32 const totalBits = nbBits + consumedBits;
HUF_fillDTableX2ForWeight(
DTable + rankVal[w],
sortedSymbols + begin, sortedSymbols + end,
totalBits, targetLog,
baseSeq, /* level */ 2);
}
}
}
static void HUF_fillDTableX2(HUF_DEltX2* DTable, const U32 targetLog,
const sortedSymbol_t* sortedList, const U32 sortedListSize,
const sortedSymbol_t* sortedList,
const U32* rankStart, rankVal_t rankValOrigin, const U32 maxWeight,
const U32 nbBitsBaseline, U32* wksp, size_t wkspSize)
const U32 nbBitsBaseline)
{
U32* rankVal = wksp;
U32* const rankVal = rankValOrigin[0];
const int scaleLog = nbBitsBaseline - targetLog; /* note : targetLog >= srcLog, hence scaleLog <= 1 */
const U32 minBits = nbBitsBaseline - maxWeight;
U32 s;
int w;
int const wEnd = (int)maxWeight + 1;
assert(wkspSize >= HUF_TABLELOG_MAX + 1);
wksp += HUF_TABLELOG_MAX + 1;
wkspSize -= HUF_TABLELOG_MAX + 1;
/* Fill DTable in order of weight. */
for (w = 1; w < wEnd; ++w) {
int const begin = (int)rankStart[w];
int const end = (int)rankStart[w+1];
U32 const nbBits = nbBitsBaseline - w;
ZSTD_memcpy(rankVal, rankValOrigin, sizeof(U32) * (HUF_TABLELOG_MAX + 1));
/* fill DTable */
for (s=0; s<sortedListSize; s++) {
const U16 symbol = sortedList[s].symbol;
const U32 weight = sortedList[s].weight;
const U32 nbBits = nbBitsBaseline - weight;
const U32 start = rankVal[weight];
const U32 length = 1 << (targetLog-nbBits);
if (targetLog-nbBits >= minBits) { /* enough room for a second symbol */
U32 sortedRank;
if (targetLog-nbBits >= minBits) {
/* Enough room for a second symbol. */
int start = rankVal[w];
U32 const length = 1U << ((targetLog - nbBits) & 0x1F /* quiet static-analyzer */);
int minWeight = nbBits + scaleLog;
int s;
if (minWeight < 1) minWeight = 1;
sortedRank = rankStart[minWeight];
HUF_fillDTableX2Level2(DTable+start, targetLog-nbBits, nbBits,
rankValOrigin[nbBits], minWeight,
sortedList+sortedRank, sortedListSize-sortedRank,
nbBitsBaseline, symbol, wksp, wkspSize);
/* Fill the DTable for every symbol of weight w.
* These symbols get at least 1 second symbol.
*/
for (s = begin; s != end; ++s) {
HUF_fillDTableX2Level2(
DTable + start, targetLog, nbBits,
rankValOrigin[nbBits], minWeight, wEnd,
sortedList, rankStart,
nbBitsBaseline, sortedList[s].symbol);
start += length;
}
} else {
HUF_DEltX2 DElt;
MEM_writeLE16(&(DElt.sequence), symbol);
DElt.nbBits = (BYTE)(nbBits);
DElt.length = 1;
{ U32 const end = start + length;
U32 u;
for (u = start; u < end; u++) DTable[u] = DElt;
} }
rankVal[weight] += length;
/* Only a single symbol. */
HUF_fillDTableX2ForWeight(
DTable + rankVal[w],
sortedList + begin, sortedList + end,
nbBits, targetLog,
/* baseSeq */ 0, /* level */ 1);
}
}
}
typedef struct {
rankValCol_t rankVal[HUF_TABLELOG_MAX];
U32 rankStats[HUF_TABLELOG_MAX + 1];
U32 rankStart0[HUF_TABLELOG_MAX + 2];
U32 rankStart0[HUF_TABLELOG_MAX + 3];
sortedSymbol_t sortedSymbol[HUF_SYMBOLVALUE_MAX + 1];
BYTE weightList[HUF_SYMBOLVALUE_MAX + 1];
U32 calleeWksp[HUF_READ_STATS_WORKSPACE_SIZE_U32];
@@ -627,9 +1046,16 @@ size_t HUF_readDTableX2_wksp(HUF_DTable* DTable,
const void* src, size_t srcSize,
void* workSpace, size_t wkspSize)
{
U32 tableLog, maxW, sizeOfSort, nbSymbols;
return HUF_readDTableX2_wksp_bmi2(DTable, src, srcSize, workSpace, wkspSize, /* bmi2 */ 0);
}
size_t HUF_readDTableX2_wksp_bmi2(HUF_DTable* DTable,
const void* src, size_t srcSize,
void* workSpace, size_t wkspSize, int bmi2)
{
U32 tableLog, maxW, nbSymbols;
DTableDesc dtd = HUF_getDTableDesc(DTable);
U32 const maxTableLog = dtd.maxTableLog;
U32 maxTableLog = dtd.maxTableLog;
size_t iSize;
void* dtPtr = DTable+1; /* force compiler to avoid strict-aliasing */
HUF_DEltX2* const dt = (HUF_DEltX2*)dtPtr;
@@ -647,11 +1073,12 @@ size_t HUF_readDTableX2_wksp(HUF_DTable* DTable,
if (maxTableLog > HUF_TABLELOG_MAX) return ERROR(tableLog_tooLarge);
/* ZSTD_memset(weightList, 0, sizeof(weightList)); */ /* is not necessary, even though some analyzer complain ... */
iSize = HUF_readStats_wksp(wksp->weightList, HUF_SYMBOLVALUE_MAX + 1, wksp->rankStats, &nbSymbols, &tableLog, src, srcSize, wksp->calleeWksp, sizeof(wksp->calleeWksp), /* bmi2 */ 0);
iSize = HUF_readStats_wksp(wksp->weightList, HUF_SYMBOLVALUE_MAX + 1, wksp->rankStats, &nbSymbols, &tableLog, src, srcSize, wksp->calleeWksp, sizeof(wksp->calleeWksp), bmi2);
if (HUF_isError(iSize)) return iSize;
/* check result */
if (tableLog > maxTableLog) return ERROR(tableLog_tooLarge); /* DTable can't fit code depth */
if (tableLog <= HUF_DECODER_FAST_TABLELOG && maxTableLog > HUF_DECODER_FAST_TABLELOG) maxTableLog = HUF_DECODER_FAST_TABLELOG;
/* find maxWeight */
for (maxW = tableLog; wksp->rankStats[maxW]==0; maxW--) {} /* necessarily finds a solution before 0 */
@@ -664,7 +1091,7 @@ size_t HUF_readDTableX2_wksp(HUF_DTable* DTable,
rankStart[w] = curr;
}
rankStart[0] = nextRankStart; /* put all 0w symbols at the end of sorted list*/
sizeOfSort = nextRankStart;
rankStart[maxW+1] = nextRankStart;
}
/* sort symbols by weight */
@@ -673,7 +1100,6 @@ size_t HUF_readDTableX2_wksp(HUF_DTable* DTable,
U32 const w = wksp->weightList[s];
U32 const r = rankStart[w]++;
wksp->sortedSymbol[r].symbol = (BYTE)s;
wksp->sortedSymbol[r].weight = (BYTE)w;
}
rankStart[0] = 0; /* forget 0w symbols; this is beginning of weight(1) */
}
@@ -698,10 +1124,9 @@ size_t HUF_readDTableX2_wksp(HUF_DTable* DTable,
} } } }
HUF_fillDTableX2(dt, maxTableLog,
wksp->sortedSymbol, sizeOfSort,
wksp->sortedSymbol,
wksp->rankStart0, wksp->rankVal, maxW,
tableLog+1,
wksp->calleeWksp, sizeof(wksp->calleeWksp) / sizeof(U32));
tableLog+1);
dtd.tableLog = (BYTE)maxTableLog;
dtd.tableType = 1;
@@ -714,7 +1139,7 @@ FORCE_INLINE_TEMPLATE U32
HUF_decodeSymbolX2(void* op, BIT_DStream_t* DStream, const HUF_DEltX2* dt, const U32 dtLog)
{
size_t const val = BIT_lookBitsFast(DStream, dtLog); /* note : dtLog >= 1 */
ZSTD_memcpy(op, dt+val, 2);
ZSTD_memcpy(op, &dt[val].sequence, 2);
BIT_skipBits(DStream, dt[val].nbBits);
return dt[val].length;
}
@@ -723,15 +1148,17 @@ FORCE_INLINE_TEMPLATE U32
HUF_decodeLastSymbolX2(void* op, BIT_DStream_t* DStream, const HUF_DEltX2* dt, const U32 dtLog)
{
size_t const val = BIT_lookBitsFast(DStream, dtLog); /* note : dtLog >= 1 */
ZSTD_memcpy(op, dt+val, 1);
if (dt[val].length==1) BIT_skipBits(DStream, dt[val].nbBits);
else {
ZSTD_memcpy(op, &dt[val].sequence, 1);
if (dt[val].length==1) {
BIT_skipBits(DStream, dt[val].nbBits);
} else {
if (DStream->bitsConsumed < (sizeof(DStream->bitContainer)*8)) {
BIT_skipBits(DStream, dt[val].nbBits);
if (DStream->bitsConsumed > (sizeof(DStream->bitContainer)*8))
/* ugly hack; works only because it's the last symbol. Note : can't easily extract nbBits from just this symbol */
DStream->bitsConsumed = (sizeof(DStream->bitContainer)*8);
} }
}
}
return 1;
}
@@ -753,19 +1180,37 @@ HUF_decodeStreamX2(BYTE* p, BIT_DStream_t* bitDPtr, BYTE* const pEnd,
BYTE* const pStart = p;
/* up to 8 symbols at a time */
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-(sizeof(bitDPtr->bitContainer)-1))) {
HUF_DECODE_SYMBOLX2_2(p, bitDPtr);
HUF_DECODE_SYMBOLX2_1(p, bitDPtr);
HUF_DECODE_SYMBOLX2_2(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
if ((size_t)(pEnd - p) >= sizeof(bitDPtr->bitContainer)) {
if (dtLog <= 11 && MEM_64bits()) {
/* up to 10 symbols at a time */
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-9)) {
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
}
} else {
/* up to 8 symbols at a time */
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-(sizeof(bitDPtr->bitContainer)-1))) {
HUF_DECODE_SYMBOLX2_2(p, bitDPtr);
HUF_DECODE_SYMBOLX2_1(p, bitDPtr);
HUF_DECODE_SYMBOLX2_2(p, bitDPtr);
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
}
}
} else {
BIT_reloadDStream(bitDPtr);
}
/* closer to end : up to 2 symbols at a time */
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p <= pEnd-2))
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
if ((size_t)(pEnd - p) >= 2) {
while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p <= pEnd-2))
HUF_DECODE_SYMBOLX2_0(p, bitDPtr);
while (p <= pEnd-2)
HUF_DECODE_SYMBOLX2_0(p, bitDPtr); /* no need to reload : reached the end of DStream */
while (p <= pEnd-2)
HUF_DECODE_SYMBOLX2_0(p, bitDPtr); /* no need to reload : reached the end of DStream */
}
if (p < pEnd)
p += HUF_decodeLastSymbolX2(p, bitDPtr, dt, dtLog);
@@ -799,7 +1244,6 @@ HUF_decompress1X2_usingDTable_internal_body(
/* decoded size */
return dstSize;
}
FORCE_INLINE_TEMPLATE size_t
HUF_decompress4X2_usingDTable_internal_body(
void* dst, size_t dstSize,
@@ -841,57 +1285,60 @@ HUF_decompress4X2_usingDTable_internal_body(
U32 const dtLog = dtd.tableLog;
if (length4 > cSrcSize) return ERROR(corruption_detected); /* overflow */
if (opStart4 > oend) return ERROR(corruption_detected); /* overflow */
CHECK_F( BIT_initDStream(&bitD1, istart1, length1) );
CHECK_F( BIT_initDStream(&bitD2, istart2, length2) );
CHECK_F( BIT_initDStream(&bitD3, istart3, length3) );
CHECK_F( BIT_initDStream(&bitD4, istart4, length4) );
/* 16-32 symbols per loop (4-8 symbols per stream) */
for ( ; (endSignal) & (op4 < olimit); ) {
if ((size_t)(oend - op4) >= sizeof(size_t)) {
for ( ; (endSignal) & (op4 < olimit); ) {
#if defined(__clang__) && (defined(__x86_64__) || defined(__i386__))
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_1(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_0(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_1(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_0(op2, &bitD2);
endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished;
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_1(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_0(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_1(op4, &bitD4);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_0(op4, &bitD4);
endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished;
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_1(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_0(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_1(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_0(op2, &bitD2);
endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished;
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_1(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_0(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_1(op4, &bitD4);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_0(op4, &bitD4);
endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished;
endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished;
#else
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_1(op1, &bitD1);
HUF_DECODE_SYMBOLX2_1(op2, &bitD2);
HUF_DECODE_SYMBOLX2_1(op3, &bitD3);
HUF_DECODE_SYMBOLX2_1(op4, &bitD4);
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_0(op1, &bitD1);
HUF_DECODE_SYMBOLX2_0(op2, &bitD2);
HUF_DECODE_SYMBOLX2_0(op3, &bitD3);
HUF_DECODE_SYMBOLX2_0(op4, &bitD4);
endSignal = (U32)LIKELY(
(BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished));
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_1(op1, &bitD1);
HUF_DECODE_SYMBOLX2_1(op2, &bitD2);
HUF_DECODE_SYMBOLX2_1(op3, &bitD3);
HUF_DECODE_SYMBOLX2_1(op4, &bitD4);
HUF_DECODE_SYMBOLX2_2(op1, &bitD1);
HUF_DECODE_SYMBOLX2_2(op2, &bitD2);
HUF_DECODE_SYMBOLX2_2(op3, &bitD3);
HUF_DECODE_SYMBOLX2_2(op4, &bitD4);
HUF_DECODE_SYMBOLX2_0(op1, &bitD1);
HUF_DECODE_SYMBOLX2_0(op2, &bitD2);
HUF_DECODE_SYMBOLX2_0(op3, &bitD3);
HUF_DECODE_SYMBOLX2_0(op4, &bitD4);
endSignal = (U32)LIKELY((U32)
(BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished)
& (BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished));
#endif
}
}
/* check corruption */
@@ -915,8 +1362,99 @@ HUF_decompress4X2_usingDTable_internal_body(
}
}
#if HUF_NEED_BMI2_FUNCTION
static BMI2_TARGET_ATTRIBUTE
size_t HUF_decompress4X2_usingDTable_internal_bmi2(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X2_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);
}
#endif
#if HUF_NEED_DEFAULT_FUNCTION
static
size_t HUF_decompress4X2_usingDTable_internal_default(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable) {
return HUF_decompress4X2_usingDTable_internal_body(dst, dstSize, cSrc, cSrcSize, DTable);
}
#endif
#if ZSTD_ENABLE_ASM_X86_64_BMI2
HUF_ASM_DECL void HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop(HUF_DecompressAsmArgs* args);
static HUF_ASM_X86_64_BMI2_ATTRS size_t
HUF_decompress4X2_usingDTable_internal_bmi2_asm(
void* dst, size_t dstSize,
const void* cSrc, size_t cSrcSize,
const HUF_DTable* DTable) {
void const* dt = DTable + 1;
const BYTE* const iend = (const BYTE*)cSrc + 6;
BYTE* const oend = (BYTE*)dst + dstSize;
HUF_DecompressAsmArgs args;
{
size_t const ret = HUF_DecompressAsmArgs_init(&args, dst, dstSize, cSrc, cSrcSize, DTable);
FORWARD_IF_ERROR(ret, "Failed to init asm args");
if (ret != 0)
return HUF_decompress4X2_usingDTable_internal_bmi2(dst, dstSize, cSrc, cSrcSize, DTable);
}
assert(args.ip[0] >= args.ilimit);
HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop(&args);
/* note : op4 already verified within main loop */
assert(args.ip[0] >= iend);
assert(args.ip[1] >= iend);
assert(args.ip[2] >= iend);
assert(args.ip[3] >= iend);
assert(args.op[3] <= oend);
(void)iend;
/* finish bitStreams one by one */
{
size_t const segmentSize = (dstSize+3) / 4;
BYTE* segmentEnd = (BYTE*)dst;
int i;
for (i = 0; i < 4; ++i) {
BIT_DStream_t bit;
if (segmentSize <= (size_t)(oend - segmentEnd))
segmentEnd += segmentSize;
else
segmentEnd = oend;
FORWARD_IF_ERROR(HUF_initRemainingDStream(&bit, &args, i, segmentEnd), "corruption");
args.op[i] += HUF_decodeStreamX2(args.op[i], &bit, segmentEnd, (HUF_DEltX2 const*)dt, HUF_DECODER_FAST_TABLELOG);
if (args.op[i] != segmentEnd)
return ERROR(corruption_detected);
}
}
/* decoded size */
return dstSize;
}
#endif /* ZSTD_ENABLE_ASM_X86_64_BMI2 */
static size_t HUF_decompress4X2_usingDTable_internal(void* dst, size_t dstSize, void const* cSrc,
size_t cSrcSize, HUF_DTable const* DTable, int bmi2)
{
#if DYNAMIC_BMI2
if (bmi2) {
# if ZSTD_ENABLE_ASM_X86_64_BMI2
return HUF_decompress4X2_usingDTable_internal_bmi2_asm(dst, dstSize, cSrc, cSrcSize, DTable);
# else
return HUF_decompress4X2_usingDTable_internal_bmi2(dst, dstSize, cSrc, cSrcSize, DTable);
# endif
}
#else
(void)bmi2;
#endif
#if ZSTD_ENABLE_ASM_X86_64_BMI2 && defined(__BMI2__)
return HUF_decompress4X2_usingDTable_internal_bmi2_asm(dst, dstSize, cSrc, cSrcSize, DTable);
#else
return HUF_decompress4X2_usingDTable_internal_default(dst, dstSize, cSrc, cSrcSize, DTable);
#endif
}
HUF_DGEN(HUF_decompress1X2_usingDTable_internal)
HUF_DGEN(HUF_decompress4X2_usingDTable_internal)
size_t HUF_decompress1X2_usingDTable(
void* dst, size_t dstSize,
@@ -1025,25 +1563,25 @@ size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize,
#if !defined(HUF_FORCE_DECOMPRESS_X1) && !defined(HUF_FORCE_DECOMPRESS_X2)
typedef struct { U32 tableTime; U32 decode256Time; } algo_time_t;
static const algo_time_t algoTime[16 /* Quantization */][3 /* single, double, quad */] =
static const algo_time_t algoTime[16 /* Quantization */][2 /* single, double */] =
{
/* single, double, quad */
{{0,0}, {1,1}, {2,2}}, /* Q==0 : impossible */
{{0,0}, {1,1}, {2,2}}, /* Q==1 : impossible */
{{ 38,130}, {1313, 74}, {2151, 38}}, /* Q == 2 : 12-18% */
{{ 448,128}, {1353, 74}, {2238, 41}}, /* Q == 3 : 18-25% */
{{ 556,128}, {1353, 74}, {2238, 47}}, /* Q == 4 : 25-32% */
{{ 714,128}, {1418, 74}, {2436, 53}}, /* Q == 5 : 32-38% */
{{ 883,128}, {1437, 74}, {2464, 61}}, /* Q == 6 : 38-44% */
{{ 897,128}, {1515, 75}, {2622, 68}}, /* Q == 7 : 44-50% */
{{ 926,128}, {1613, 75}, {2730, 75}}, /* Q == 8 : 50-56% */
{{ 947,128}, {1729, 77}, {3359, 77}}, /* Q == 9 : 56-62% */
{{1107,128}, {2083, 81}, {4006, 84}}, /* Q ==10 : 62-69% */
{{1177,128}, {2379, 87}, {4785, 88}}, /* Q ==11 : 69-75% */
{{1242,128}, {2415, 93}, {5155, 84}}, /* Q ==12 : 75-81% */
{{1349,128}, {2644,106}, {5260,106}}, /* Q ==13 : 81-87% */
{{1455,128}, {2422,124}, {4174,124}}, /* Q ==14 : 87-93% */
{{ 722,128}, {1891,145}, {1936,146}}, /* Q ==15 : 93-99% */
{{0,0}, {1,1}}, /* Q==0 : impossible */
{{0,0}, {1,1}}, /* Q==1 : impossible */
{{ 150,216}, { 381,119}}, /* Q == 2 : 12-18% */
{{ 170,205}, { 514,112}}, /* Q == 3 : 18-25% */
{{ 177,199}, { 539,110}}, /* Q == 4 : 25-32% */
{{ 197,194}, { 644,107}}, /* Q == 5 : 32-38% */
{{ 221,192}, { 735,107}}, /* Q == 6 : 38-44% */
{{ 256,189}, { 881,106}}, /* Q == 7 : 44-50% */
{{ 359,188}, {1167,109}}, /* Q == 8 : 50-56% */
{{ 582,187}, {1570,114}}, /* Q == 9 : 56-62% */
{{ 688,187}, {1712,122}}, /* Q ==10 : 62-69% */
{{ 825,186}, {1965,136}}, /* Q ==11 : 69-75% */
{{ 976,185}, {2131,150}}, /* Q ==12 : 75-81% */
{{1180,186}, {2070,175}}, /* Q ==13 : 81-87% */
{{1377,185}, {1731,202}}, /* Q ==14 : 87-93% */
{{1412,185}, {1695,202}}, /* Q ==15 : 93-99% */
};
#endif
@@ -1070,7 +1608,7 @@ U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize)
U32 const D256 = (U32)(dstSize >> 8);
U32 const DTime0 = algoTime[Q][0].tableTime + (algoTime[Q][0].decode256Time * D256);
U32 DTime1 = algoTime[Q][1].tableTime + (algoTime[Q][1].decode256Time * D256);
DTime1 += DTime1 >> 3; /* advantage to algorithm using less memory, to reduce cache eviction */
DTime1 += DTime1 >> 5; /* small advantage to algorithm using less memory, to reduce cache eviction */
return DTime1 < DTime0;
}
#endif
lib/decompress/huf_decompress_amd64.S
+571
View File
@@ -0,0 +1,571 @@
#include "../common/portability_macros.h"
#if ZSTD_ENABLE_ASM_X86_64_BMI2
/* Stack marking
* ref: https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart
*/
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack,"",%progbits
#endif
/* Calling convention:
*
* %rdi contains the first argument: HUF_DecompressAsmArgs*.
* %rbp isn't maintained (no frame pointer).
* %rsp contains the stack pointer that grows down.
* No red-zone is assumed, only addresses >= %rsp are used.
* All register contents are preserved.
*
* TODO: Support Windows calling convention.
*/
.global HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop
.global HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop
.global _HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop
.global _HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop
.text
/* Sets up register mappings for clarity.
* op[], bits[], dtable & ip[0] each get their own register.
* ip[1,2,3] & olimit alias var[].
* %rax is a scratch register.
*/
#define op0 rsi
#define op1 rbx
#define op2 rcx
#define op3 rdi
#define ip0 r8
#define ip1 r9
#define ip2 r10
#define ip3 r11
#define bits0 rbp
#define bits1 rdx
#define bits2 r12
#define bits3 r13
#define dtable r14
#define olimit r15
/* var[] aliases ip[1,2,3] & olimit
* ip[1,2,3] are saved every iteration.
* olimit is only used in compute_olimit.
*/
#define var0 r15
#define var1 r9
#define var2 r10
#define var3 r11
/* 32-bit var registers */
#define vard0 r15d
#define vard1 r9d
#define vard2 r10d
#define vard3 r11d
/* Calls X(N) for each stream 0, 1, 2, 3. */
#define FOR_EACH_STREAM(X) \
X(0); \
X(1); \
X(2); \
X(3)
/* Calls X(N, idx) for each stream 0, 1, 2, 3. */
#define FOR_EACH_STREAM_WITH_INDEX(X, idx) \
X(0, idx); \
X(1, idx); \
X(2, idx); \
X(3, idx)
/* Define both _HUF_* & HUF_* symbols because MacOS
* C symbols are prefixed with '_' & Linux symbols aren't.
*/
_HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop:
HUF_decompress4X1_usingDTable_internal_bmi2_asm_loop:
/* Save all registers - even if they are callee saved for simplicity. */
push %rax
push %rbx
push %rcx
push %rdx
push %rbp
push %rsi
push %rdi
push %r8
push %r9
push %r10
push %r11
push %r12
push %r13
push %r14
push %r15
/* Read HUF_DecompressAsmArgs* args from %rax */
movq %rdi, %rax
movq 0(%rax), %ip0
movq 8(%rax), %ip1
movq 16(%rax), %ip2
movq 24(%rax), %ip3
movq 32(%rax), %op0
movq 40(%rax), %op1
movq 48(%rax), %op2
movq 56(%rax), %op3
movq 64(%rax), %bits0
movq 72(%rax), %bits1
movq 80(%rax), %bits2
movq 88(%rax), %bits3
movq 96(%rax), %dtable
push %rax /* argument */
push 104(%rax) /* ilimit */
push 112(%rax) /* oend */
push %olimit /* olimit space */
subq $24, %rsp
.L_4X1_compute_olimit:
/* Computes how many iterations we can do safely
* %r15, %rax may be clobbered
* rbx, rdx must be saved
* op3 & ip0 mustn't be clobbered
*/
movq %rbx, 0(%rsp)
movq %rdx, 8(%rsp)
movq 32(%rsp), %rax /* rax = oend */
subq %op3, %rax /* rax = oend - op3 */
/* r15 = (oend - op3) / 5 */
movabsq $-3689348814741910323, %rdx
mulq %rdx
movq %rdx, %r15
shrq $2, %r15
movq %ip0, %rax /* rax = ip0 */
movq 40(%rsp), %rdx /* rdx = ilimit */
subq %rdx, %rax /* rax = ip0 - ilimit */
movq %rax, %rbx /* rbx = ip0 - ilimit */
/* rdx = (ip0 - ilimit) / 7 */
movabsq $2635249153387078803, %rdx
mulq %rdx
subq %rdx, %rbx
shrq %rbx
addq %rbx, %rdx
shrq $2, %rdx
/* r15 = min(%rdx, %r15) */
cmpq %rdx, %r15
cmova %rdx, %r15
/* r15 = r15 * 5 */
leaq (%r15, %r15, 4), %r15
/* olimit = op3 + r15 */
addq %op3, %olimit
movq 8(%rsp), %rdx
movq 0(%rsp), %rbx
/* If (op3 + 20 > olimit) */
movq %op3, %rax /* rax = op3 */
addq $20, %rax /* rax = op3 + 20 */
cmpq %rax, %olimit /* op3 + 20 > olimit */
jb .L_4X1_exit
/* If (ip1 < ip0) go to exit */
cmpq %ip0, %ip1
jb .L_4X1_exit
/* If (ip2 < ip1) go to exit */
cmpq %ip1, %ip2
jb .L_4X1_exit
/* If (ip3 < ip2) go to exit */
cmpq %ip2, %ip3
jb .L_4X1_exit
/* Reads top 11 bits from bits[n]
* Loads dt[bits[n]] into var[n]
*/
#define GET_NEXT_DELT(n) \
movq $53, %var##n; \
shrxq %var##n, %bits##n, %var##n; \
movzwl (%dtable,%var##n,2),%vard##n
/* var[n] must contain the DTable entry computed with GET_NEXT_DELT
* Moves var[n] to %rax
* bits[n] <<= var[n] & 63
* op[n][idx] = %rax >> 8
* %ah is a way to access bits [8, 16) of %rax
*/
#define DECODE_FROM_DELT(n, idx) \
movq %var##n, %rax; \
shlxq %var##n, %bits##n, %bits##n; \
movb %ah, idx(%op##n)
/* Assumes GET_NEXT_DELT has been called.
* Calls DECODE_FROM_DELT then GET_NEXT_DELT
*/
#define DECODE_AND_GET_NEXT(n, idx) \
DECODE_FROM_DELT(n, idx); \
GET_NEXT_DELT(n) \
/* // ctz & nbBytes is stored in bits[n]
* // nbBits is stored in %rax
* ctz = CTZ[bits[n]]
* nbBits = ctz & 7
* nbBytes = ctz >> 3
* op[n] += 5
* ip[n] -= nbBytes
* // Note: x86-64 is little-endian ==> no bswap
* bits[n] = MEM_readST(ip[n]) | 1
* bits[n] <<= nbBits
*/
#define RELOAD_BITS(n) \
bsfq %bits##n, %bits##n; \
movq %bits##n, %rax; \
andq $7, %rax; \
shrq $3, %bits##n; \
leaq 5(%op##n), %op##n; \
subq %bits##n, %ip##n; \
movq (%ip##n), %bits##n; \
orq $1, %bits##n; \
shlx %rax, %bits##n, %bits##n
/* Store clobbered variables on the stack */
movq %olimit, 24(%rsp)
movq %ip1, 0(%rsp)
movq %ip2, 8(%rsp)
movq %ip3, 16(%rsp)
/* Call GET_NEXT_DELT for each stream */
FOR_EACH_STREAM(GET_NEXT_DELT)
.p2align 6
.L_4X1_loop_body:
/* Decode 5 symbols in each of the 4 streams (20 total)
* Must have called GET_NEXT_DELT for each stream
*/
FOR_EACH_STREAM_WITH_INDEX(DECODE_AND_GET_NEXT, 0)
FOR_EACH_STREAM_WITH_INDEX(DECODE_AND_GET_NEXT, 1)
FOR_EACH_STREAM_WITH_INDEX(DECODE_AND_GET_NEXT, 2)
FOR_EACH_STREAM_WITH_INDEX(DECODE_AND_GET_NEXT, 3)
FOR_EACH_STREAM_WITH_INDEX(DECODE_FROM_DELT, 4)
/* Load ip[1,2,3] from stack (var[] aliases them)
* ip[] is needed for RELOAD_BITS
* Each will be stored back to the stack after RELOAD
*/
movq 0(%rsp), %ip1
movq 8(%rsp), %ip2
movq 16(%rsp), %ip3
/* Reload each stream & fetch the next table entry
* to prepare for the next iteration
*/
RELOAD_BITS(0)
GET_NEXT_DELT(0)
RELOAD_BITS(1)
movq %ip1, 0(%rsp)
GET_NEXT_DELT(1)
RELOAD_BITS(2)
movq %ip2, 8(%rsp)
GET_NEXT_DELT(2)
RELOAD_BITS(3)
movq %ip3, 16(%rsp)
GET_NEXT_DELT(3)
/* If op3 < olimit: continue the loop */
cmp %op3, 24(%rsp)
ja .L_4X1_loop_body
/* Reload ip[1,2,3] from stack */
movq 0(%rsp), %ip1
movq 8(%rsp), %ip2
movq 16(%rsp), %ip3
/* Re-compute olimit */
jmp .L_4X1_compute_olimit
#undef GET_NEXT_DELT
#undef DECODE_FROM_DELT
#undef DECODE
#undef RELOAD_BITS
.L_4X1_exit:
addq $24, %rsp
/* Restore stack (oend & olimit) */
pop %rax /* olimit */
pop %rax /* oend */
pop %rax /* ilimit */
pop %rax /* arg */
/* Save ip / op / bits */
movq %ip0, 0(%rax)
movq %ip1, 8(%rax)
movq %ip2, 16(%rax)
movq %ip3, 24(%rax)
movq %op0, 32(%rax)
movq %op1, 40(%rax)
movq %op2, 48(%rax)
movq %op3, 56(%rax)
movq %bits0, 64(%rax)
movq %bits1, 72(%rax)
movq %bits2, 80(%rax)
movq %bits3, 88(%rax)
/* Restore registers */
pop %r15
pop %r14
pop %r13
pop %r12
pop %r11
pop %r10
pop %r9
pop %r8
pop %rdi
pop %rsi
pop %rbp
pop %rdx
pop %rcx
pop %rbx
pop %rax
ret
_HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop:
HUF_decompress4X2_usingDTable_internal_bmi2_asm_loop:
/* Save all registers - even if they are callee saved for simplicity. */
push %rax
push %rbx
push %rcx
push %rdx
push %rbp
push %rsi
push %rdi
push %r8
push %r9
push %r10
push %r11
push %r12
push %r13
push %r14
push %r15
movq %rdi, %rax
movq 0(%rax), %ip0
movq 8(%rax), %ip1
movq 16(%rax), %ip2
movq 24(%rax), %ip3
movq 32(%rax), %op0
movq 40(%rax), %op1
movq 48(%rax), %op2
movq 56(%rax), %op3
movq 64(%rax), %bits0
movq 72(%rax), %bits1
movq 80(%rax), %bits2
movq 88(%rax), %bits3
movq 96(%rax), %dtable
push %rax /* argument */
push %rax /* olimit */
push 104(%rax) /* ilimit */
movq 112(%rax), %rax
push %rax /* oend3 */
movq %op3, %rax
push %rax /* oend2 */
movq %op2, %rax
push %rax /* oend1 */
movq %op1, %rax
push %rax /* oend0 */
/* Scratch space */
subq $8, %rsp
.L_4X2_compute_olimit:
/* Computes how many iterations we can do safely
* %r15, %rax may be clobbered
* rdx must be saved
* op[1,2,3,4] & ip0 mustn't be clobbered
*/
movq %rdx, 0(%rsp)
/* We can consume up to 7 input bytes each iteration. */
movq %ip0, %rax /* rax = ip0 */
movq 40(%rsp), %rdx /* rdx = ilimit */
subq %rdx, %rax /* rax = ip0 - ilimit */
movq %rax, %r15 /* r15 = ip0 - ilimit */
/* rdx = rax / 7 */
movabsq $2635249153387078803, %rdx
mulq %rdx
subq %rdx, %r15
shrq %r15
addq %r15, %rdx
shrq $2, %rdx
/* r15 = (ip0 - ilimit) / 7 */
movq %rdx, %r15
movabsq $-3689348814741910323, %rdx
movq 8(%rsp), %rax /* rax = oend0 */
subq %op0, %rax /* rax = oend0 - op0 */
mulq %rdx
shrq $3, %rdx /* rdx = rax / 10 */
/* r15 = min(%rdx, %r15) */
cmpq %rdx, %r15
cmova %rdx, %r15
movabsq $-3689348814741910323, %rdx
movq 16(%rsp), %rax /* rax = oend1 */
subq %op1, %rax /* rax = oend1 - op1 */
mulq %rdx
shrq $3, %rdx /* rdx = rax / 10 */
/* r15 = min(%rdx, %r15) */
cmpq %rdx, %r15
cmova %rdx, %r15
movabsq $-3689348814741910323, %rdx
movq 24(%rsp), %rax /* rax = oend2 */
subq %op2, %rax /* rax = oend2 - op2 */
mulq %rdx
shrq $3, %rdx /* rdx = rax / 10 */
/* r15 = min(%rdx, %r15) */
cmpq %rdx, %r15
cmova %rdx, %r15
movabsq $-3689348814741910323, %rdx
movq 32(%rsp), %rax /* rax = oend3 */
subq %op3, %rax /* rax = oend3 - op3 */
mulq %rdx
shrq $3, %rdx /* rdx = rax / 10 */
/* r15 = min(%rdx, %r15) */
cmpq %rdx, %r15
cmova %rdx, %r15
/* olimit = op3 + 5 * r15 */
movq %r15, %rax
leaq (%op3, %rax, 4), %olimit
addq %rax, %olimit
movq 0(%rsp), %rdx
/* If (op3 + 10 > olimit) */
movq %op3, %rax /* rax = op3 */
addq $10, %rax /* rax = op3 + 10 */
cmpq %rax, %olimit /* op3 + 10 > olimit */
jb .L_4X2_exit
/* If (ip1 < ip0) go to exit */
cmpq %ip0, %ip1
jb .L_4X2_exit
/* If (ip2 < ip1) go to exit */
cmpq %ip1, %ip2
jb .L_4X2_exit
/* If (ip3 < ip2) go to exit */
cmpq %ip2, %ip3
jb .L_4X2_exit
#define DECODE(n, idx) \
movq %bits##n, %rax; \
shrq $53, %rax; \
movzwl 0(%dtable,%rax,4),%r8d; \
movzbl 2(%dtable,%rax,4),%r15d; \
movzbl 3(%dtable,%rax,4),%eax; \
movw %r8w, (%op##n); \
shlxq %r15, %bits##n, %bits##n; \
addq %rax, %op##n
#define RELOAD_BITS(n) \
bsfq %bits##n, %bits##n; \
movq %bits##n, %rax; \
shrq $3, %bits##n; \
andq $7, %rax; \
subq %bits##n, %ip##n; \
movq (%ip##n), %bits##n; \
orq $1, %bits##n; \
shlxq %rax, %bits##n, %bits##n
movq %olimit, 48(%rsp)
.p2align 6
.L_4X2_loop_body:
/* We clobber r8, so store it on the stack */
movq %r8, 0(%rsp)
/* Decode 5 symbols from each of the 4 streams (20 symbols total). */
FOR_EACH_STREAM_WITH_INDEX(DECODE, 0)
FOR_EACH_STREAM_WITH_INDEX(DECODE, 1)
FOR_EACH_STREAM_WITH_INDEX(DECODE, 2)
FOR_EACH_STREAM_WITH_INDEX(DECODE, 3)
FOR_EACH_STREAM_WITH_INDEX(DECODE, 4)
/* Reload r8 */
movq 0(%rsp), %r8
FOR_EACH_STREAM(RELOAD_BITS)
cmp %op3, 48(%rsp)
ja .L_4X2_loop_body
jmp .L_4X2_compute_olimit
#undef DECODE
#undef RELOAD_BITS
.L_4X2_exit:
addq $8, %rsp
/* Restore stack (oend & olimit) */
pop %rax /* oend0 */
pop %rax /* oend1 */
pop %rax /* oend2 */
pop %rax /* oend3 */
pop %rax /* ilimit */
pop %rax /* olimit */
pop %rax /* arg */
/* Save ip / op / bits */
movq %ip0, 0(%rax)
movq %ip1, 8(%rax)
movq %ip2, 16(%rax)
movq %ip3, 24(%rax)
movq %op0, 32(%rax)
movq %op1, 40(%rax)
movq %op2, 48(%rax)
movq %op3, 56(%rax)
movq %bits0, 64(%rax)
movq %bits1, 72(%rax)
movq %bits2, 80(%rax)
movq %bits3, 88(%rax)
/* Restore registers */
pop %r15
pop %r14
pop %r13
pop %r12
pop %r11
pop %r10
pop %r9
pop %r8
pop %rdi
pop %rsi
pop %rbp
pop %rdx
pop %rcx
pop %rbx
pop %rax
ret
#endif
lib/decompress/zstd_decompress.c
+85 -22
View File
@@ -56,7 +56,6 @@
* Dependencies
*********************************************************/
#include "../common/zstd_deps.h" /* ZSTD_memcpy, ZSTD_memmove, ZSTD_memset */
#include "../common/cpu.h" /* bmi2 */
#include "../common/mem.h" /* low level memory routines */
#define FSE_STATIC_LINKING_ONLY
#include "../common/fse.h"
@@ -177,12 +176,15 @@ static const ZSTD_DDict* ZSTD_DDictHashSet_getDDict(ZSTD_DDictHashSet* hashSet,
static ZSTD_DDictHashSet* ZSTD_createDDictHashSet(ZSTD_customMem customMem) {
ZSTD_DDictHashSet* ret = (ZSTD_DDictHashSet*)ZSTD_customMalloc(sizeof(ZSTD_DDictHashSet), customMem);
DEBUGLOG(4, "Allocating new hash set");
if (!ret)
return NULL;
ret->ddictPtrTable = (const ZSTD_DDict**)ZSTD_customCalloc(DDICT_HASHSET_TABLE_BASE_SIZE * sizeof(ZSTD_DDict*), customMem);
ret->ddictPtrTableSize = DDICT_HASHSET_TABLE_BASE_SIZE;
ret->ddictPtrCount = 0;
if (!ret || !ret->ddictPtrTable) {
if (!ret->ddictPtrTable) {
ZSTD_customFree(ret, customMem);
return NULL;
}
ret->ddictPtrTableSize = DDICT_HASHSET_TABLE_BASE_SIZE;
ret->ddictPtrCount = 0;
return ret;
}
@@ -255,11 +257,15 @@ static void ZSTD_initDCtx_internal(ZSTD_DCtx* dctx)
dctx->inBuffSize = 0;
dctx->outBuffSize = 0;
dctx->streamStage = zdss_init;
#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1)
dctx->legacyContext = NULL;
dctx->previousLegacyVersion = 0;
#endif
dctx->noForwardProgress = 0;
dctx->oversizedDuration = 0;
dctx->bmi2 = ZSTD_cpuid_bmi2(ZSTD_cpuid());
#if DYNAMIC_BMI2
dctx->bmi2 = ZSTD_cpuSupportsBmi2();
#endif
dctx->ddictSet = NULL;
ZSTD_DCtx_resetParameters(dctx);
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
@@ -280,8 +286,7 @@ ZSTD_DCtx* ZSTD_initStaticDCtx(void *workspace, size_t workspaceSize)
return dctx;
}
ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
{
static ZSTD_DCtx* ZSTD_createDCtx_internal(ZSTD_customMem customMem) {
if ((!customMem.customAlloc) ^ (!customMem.customFree)) return NULL;
{ ZSTD_DCtx* const dctx = (ZSTD_DCtx*)ZSTD_customMalloc(sizeof(*dctx), customMem);
@@ -292,10 +297,15 @@ ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
}
}
ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
{
return ZSTD_createDCtx_internal(customMem);
}
ZSTD_DCtx* ZSTD_createDCtx(void)
{
DEBUGLOG(3, "ZSTD_createDCtx");
return ZSTD_createDCtx_advanced(ZSTD_defaultCMem);
return ZSTD_createDCtx_internal(ZSTD_defaultCMem);
}
static void ZSTD_clearDict(ZSTD_DCtx* dctx)
@@ -380,6 +390,19 @@ unsigned ZSTD_isFrame(const void* buffer, size_t size)
return 0;
}
/*! ZSTD_isSkippableFrame() :
* Tells if the content of `buffer` starts with a valid Frame Identifier for a skippable frame.
* Note : Frame Identifier is 4 bytes. If `size < 4`, @return will always be 0.
*/
unsigned ZSTD_isSkippableFrame(const void* buffer, size_t size)
{
if (size < ZSTD_FRAMEIDSIZE) return 0;
{ U32 const magic = MEM_readLE32(buffer);
if ((magic & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) return 1;
}
return 0;
}
/** ZSTD_frameHeaderSize_internal() :
* srcSize must be large enough to reach header size fields.
* note : only works for formats ZSTD_f_zstd1 and ZSTD_f_zstd1_magicless.
@@ -466,7 +489,9 @@ size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, s
}
switch(dictIDSizeCode)
{
default: assert(0); /* impossible */
default:
assert(0); /* impossible */
ZSTD_FALLTHROUGH;
case 0 : break;
case 1 : dictID = ip[pos]; pos++; break;
case 2 : dictID = MEM_readLE16(ip+pos); pos+=2; break;
@@ -474,7 +499,9 @@ size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, s
}
switch(fcsID)
{
default: assert(0); /* impossible */
default:
assert(0); /* impossible */
ZSTD_FALLTHROUGH;
case 0 : if (singleSegment) frameContentSize = ip[pos]; break;
case 1 : frameContentSize = MEM_readLE16(ip+pos)+256; break;
case 2 : frameContentSize = MEM_readLE32(ip+pos); break;
@@ -503,7 +530,6 @@ size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t src
return ZSTD_getFrameHeader_advanced(zfhPtr, src, srcSize, ZSTD_f_zstd1);
}
/** ZSTD_getFrameContentSize() :
* compatible with legacy mode
* @return : decompressed size of the single frame pointed to be `src` if known, otherwise
@@ -544,6 +570,37 @@ static size_t readSkippableFrameSize(void const* src, size_t srcSize)
}
}
/*! ZSTD_readSkippableFrame() :
* Retrieves a zstd skippable frame containing data given by src, and writes it to dst buffer.
*
* The parameter magicVariant will receive the magicVariant that was supplied when the frame was written,
* i.e. magicNumber - ZSTD_MAGIC_SKIPPABLE_START. This can be NULL if the caller is not interested
* in the magicVariant.
*
* Returns an error if destination buffer is not large enough, or if the frame is not skippable.
*
* @return : number of bytes written or a ZSTD error.
*/
ZSTDLIB_API size_t ZSTD_readSkippableFrame(void* dst, size_t dstCapacity, unsigned* magicVariant,
const void* src, size_t srcSize)
{
U32 const magicNumber = MEM_readLE32(src);
size_t skippableFrameSize = readSkippableFrameSize(src, srcSize);
size_t skippableContentSize = skippableFrameSize - ZSTD_SKIPPABLEHEADERSIZE;
/* check input validity */
RETURN_ERROR_IF(!ZSTD_isSkippableFrame(src, srcSize), frameParameter_unsupported, "");
RETURN_ERROR_IF(skippableFrameSize < ZSTD_SKIPPABLEHEADERSIZE || skippableFrameSize > srcSize, srcSize_wrong, "");
RETURN_ERROR_IF(skippableContentSize > dstCapacity, dstSize_tooSmall, "");
/* deliver payload */
if (skippableContentSize > 0 && dst != NULL)
ZSTD_memcpy(dst, (const BYTE *)src + ZSTD_SKIPPABLEHEADERSIZE, skippableContentSize);
if (magicVariant != NULL)
*magicVariant = magicNumber - ZSTD_MAGIC_SKIPPABLE_START;
return skippableContentSize;
}
/** ZSTD_findDecompressedSize() :
* compatible with legacy mode
* `srcSize` must be the exact length of some number of ZSTD compressed and/or
@@ -858,7 +915,7 @@ static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx,
switch(blockProperties.blockType)
{
case bt_compressed:
decodedSize = ZSTD_decompressBlock_internal(dctx, op, (size_t)(oend-op), ip, cBlockSize, /* frame */ 1);
decodedSize = ZSTD_decompressBlock_internal(dctx, op, (size_t)(oend-op), ip, cBlockSize, /* frame */ 1, not_streaming);
break;
case bt_raw :
decodedSize = ZSTD_copyRawBlock(op, (size_t)(oend-op), ip, cBlockSize);
@@ -1009,7 +1066,7 @@ static ZSTD_DDict const* ZSTD_getDDict(ZSTD_DCtx* dctx)
switch (dctx->dictUses) {
default:
assert(0 /* Impossible */);
/* fall-through */
ZSTD_FALLTHROUGH;
case ZSTD_dont_use:
ZSTD_clearDict(dctx);
return NULL;
@@ -1031,7 +1088,7 @@ size_t ZSTD_decompress(void* dst, size_t dstCapacity, const void* src, size_t sr
{
#if defined(ZSTD_HEAPMODE) && (ZSTD_HEAPMODE>=1)
size_t regenSize;
ZSTD_DCtx* const dctx = ZSTD_createDCtx();
ZSTD_DCtx* const dctx = ZSTD_createDCtx_internal(ZSTD_defaultCMem);
RETURN_ERROR_IF(dctx==NULL, memory_allocation, "NULL pointer!");
regenSize = ZSTD_decompressDCtx(dctx, dst, dstCapacity, src, srcSize);
ZSTD_freeDCtx(dctx);
@@ -1065,7 +1122,7 @@ static size_t ZSTD_nextSrcSizeToDecompressWithInputSize(ZSTD_DCtx* dctx, size_t
return dctx->expected;
if (dctx->bType != bt_raw)
return dctx->expected;
return MIN(MAX(inputSize, 1), dctx->expected);
return BOUNDED(1, inputSize, dctx->expected);
}
ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx) {
@@ -1073,7 +1130,9 @@ ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx) {
{
default: /* should not happen */
assert(0);
ZSTD_FALLTHROUGH;
case ZSTDds_getFrameHeaderSize:
ZSTD_FALLTHROUGH;
case ZSTDds_decodeFrameHeader:
return ZSTDnit_frameHeader;
case ZSTDds_decodeBlockHeader:
@@ -1085,6 +1144,7 @@ ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx) {
case ZSTDds_checkChecksum:
return ZSTDnit_checksum;
case ZSTDds_decodeSkippableHeader:
ZSTD_FALLTHROUGH;
case ZSTDds_skipFrame:
return ZSTDnit_skippableFrame;
}
@@ -1168,7 +1228,7 @@ size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, c
{
case bt_compressed:
DEBUGLOG(5, "ZSTD_decompressContinue: case bt_compressed");
rSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 1);
rSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 1, is_streaming);
dctx->expected = 0; /* Streaming not supported */
break;
case bt_raw :
@@ -1493,7 +1553,7 @@ size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
ZSTD_DStream* ZSTD_createDStream(void)
{
DEBUGLOG(3, "ZSTD_createDStream");
return ZSTD_createDStream_advanced(ZSTD_defaultCMem);
return ZSTD_createDCtx_internal(ZSTD_defaultCMem);
}
ZSTD_DStream* ZSTD_initStaticDStream(void *workspace, size_t workspaceSize)
@@ -1503,7 +1563,7 @@ ZSTD_DStream* ZSTD_initStaticDStream(void *workspace, size_t workspaceSize)
ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem)
{
return ZSTD_createDCtx_advanced(customMem);
return ZSTD_createDCtx_internal(customMem);
}
size_t ZSTD_freeDStream(ZSTD_DStream* zds)
@@ -1763,7 +1823,8 @@ size_t ZSTD_sizeof_DStream(const ZSTD_DStream* dctx)
size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize)
{
size_t const blockSize = (size_t) MIN(windowSize, ZSTD_BLOCKSIZE_MAX);
unsigned long long const neededRBSize = windowSize + blockSize + (WILDCOPY_OVERLENGTH * 2);
/* space is needed to store the litbuffer after the output of a given block without stomping the extDict of a previous run, as well as to cover both windows against wildcopy*/
unsigned long long const neededRBSize = windowSize + blockSize + ZSTD_BLOCKSIZE_MAX + (WILDCOPY_OVERLENGTH * 2);
unsigned long long const neededSize = MIN(frameContentSize, neededRBSize);
size_t const minRBSize = (size_t) neededSize;
RETURN_ERROR_IF((unsigned long long)minRBSize != neededSize,
@@ -1897,10 +1958,12 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
DEBUGLOG(5, "stage zdss_init => transparent reset ");
zds->streamStage = zdss_loadHeader;
zds->lhSize = zds->inPos = zds->outStart = zds->outEnd = 0;
#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1)
zds->legacyVersion = 0;
#endif
zds->hostageByte = 0;
zds->expectedOutBuffer = *output;
/* fall-through */
ZSTD_FALLTHROUGH;
case zdss_loadHeader :
DEBUGLOG(5, "stage zdss_loadHeader (srcSize : %u)", (U32)(iend - ip));
@@ -2038,7 +2101,7 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
zds->outBuffSize = neededOutBuffSize;
} } }
zds->streamStage = zdss_read;
/* fall-through */
ZSTD_FALLTHROUGH;
case zdss_read:
DEBUGLOG(5, "stage zdss_read");
@@ -2057,7 +2120,7 @@ size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inB
} }
if (ip==iend) { someMoreWork = 0; break; } /* no more input */
zds->streamStage = zdss_load;
/* fall-through */
ZSTD_FALLTHROUGH;
case zdss_load:
{ size_t const neededInSize = ZSTD_nextSrcSizeToDecompress(zds);
lib/decompress/zstd_decompress_block.c
+746 -222
View File
@@ -69,15 +69,56 @@ size_t ZSTD_getcBlockSize(const void* src, size_t srcSize,
}
}
/* Allocate buffer for literals, either overlapping current dst, or split between dst and litExtraBuffer, or stored entirely within litExtraBuffer */
static void ZSTD_allocateLiteralsBuffer(ZSTD_DCtx* dctx, void* const dst, const size_t dstCapacity, const size_t litSize,
const streaming_operation streaming, const size_t expectedWriteSize, const unsigned splitImmediately)
{
if (streaming == not_streaming && dstCapacity > ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH + litSize + WILDCOPY_OVERLENGTH)
{
/* room for litbuffer to fit without read faulting */
dctx->litBuffer = (BYTE*)dst + ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH;
dctx->litBufferEnd = dctx->litBuffer + litSize;
dctx->litBufferLocation = ZSTD_in_dst;
}
else if (litSize > ZSTD_LITBUFFEREXTRASIZE)
{
/* won't fit in litExtraBuffer, so it will be split between end of dst and extra buffer */
if (splitImmediately) {
/* won't fit in litExtraBuffer, so it will be split between end of dst and extra buffer */
dctx->litBuffer = (BYTE*)dst + expectedWriteSize - litSize + ZSTD_LITBUFFEREXTRASIZE - WILDCOPY_OVERLENGTH;
dctx->litBufferEnd = dctx->litBuffer + litSize - ZSTD_LITBUFFEREXTRASIZE;
}
else {
/* initially this will be stored entirely in dst during huffman decoding, it will partially shifted to litExtraBuffer after */
dctx->litBuffer = (BYTE*)dst + expectedWriteSize - litSize;
dctx->litBufferEnd = (BYTE*)dst + expectedWriteSize;
}
dctx->litBufferLocation = ZSTD_split;
}
else
{
/* fits entirely within litExtraBuffer, so no split is necessary */
dctx->litBuffer = dctx->litExtraBuffer;
dctx->litBufferEnd = dctx->litBuffer + litSize;
dctx->litBufferLocation = ZSTD_not_in_dst;
}
}
/* Hidden declaration for fullbench */
size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
const void* src, size_t srcSize);
const void* src, size_t srcSize,
void* dst, size_t dstCapacity, const streaming_operation streaming);
/*! ZSTD_decodeLiteralsBlock() :
* Where it is possible to do so without being stomped by the output during decompression, the literals block will be stored
* in the dstBuffer. If there is room to do so, it will be stored in full in the excess dst space after where the current
* block will be output. Otherwise it will be stored at the end of the current dst blockspace, with a small portion being
* stored in dctx->litExtraBuffer to help keep it "ahead" of the current output write.
*
* @return : nb of bytes read from src (< srcSize )
* note : symbol not declared but exposed for fullbench */
size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
const void* src, size_t srcSize) /* note : srcSize < BLOCKSIZE */
const void* src, size_t srcSize, /* note : srcSize < BLOCKSIZE */
void* dst, size_t dstCapacity, const streaming_operation streaming)
{
DEBUGLOG(5, "ZSTD_decodeLiteralsBlock");
RETURN_ERROR_IF(srcSize < MIN_CBLOCK_SIZE, corruption_detected, "");
@@ -90,7 +131,7 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
case set_repeat:
DEBUGLOG(5, "set_repeat flag : re-using stats from previous compressed literals block");
RETURN_ERROR_IF(dctx->litEntropy==0, dictionary_corrupted, "");
/* fall-through */
ZSTD_FALLTHROUGH;
case set_compressed:
RETURN_ERROR_IF(srcSize < 5, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for case 3");
@@ -99,6 +140,7 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
U32 const lhlCode = (istart[0] >> 2) & 3;
U32 const lhc = MEM_readLE32(istart);
size_t hufSuccess;
size_t expectedWriteSize = MIN(ZSTD_BLOCKSIZE_MAX, dstCapacity);
switch(lhlCode)
{
case 0: case 1: default: /* note : default is impossible, since lhlCode into [0..3] */
@@ -121,8 +163,11 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
litCSize = (lhc >> 22) + ((size_t)istart[4] << 10);
break;
}
RETURN_ERROR_IF(litSize > 0 && dst == NULL, dstSize_tooSmall, "NULL not handled");
RETURN_ERROR_IF(litSize > ZSTD_BLOCKSIZE_MAX, corruption_detected, "");
RETURN_ERROR_IF(litCSize + lhSize > srcSize, corruption_detected, "");
RETURN_ERROR_IF(expectedWriteSize < litSize , dstSize_tooSmall, "");
ZSTD_allocateLiteralsBuffer(dctx, dst, dstCapacity, litSize, streaming, expectedWriteSize, 0);
/* prefetch huffman table if cold */
if (dctx->ddictIsCold && (litSize > 768 /* heuristic */)) {
@@ -133,11 +178,11 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
if (singleStream) {
hufSuccess = HUF_decompress1X_usingDTable_bmi2(
dctx->litBuffer, litSize, istart+lhSize, litCSize,
dctx->HUFptr, dctx->bmi2);
dctx->HUFptr, ZSTD_DCtx_get_bmi2(dctx));
} else {
hufSuccess = HUF_decompress4X_usingDTable_bmi2(
dctx->litBuffer, litSize, istart+lhSize, litCSize,
dctx->HUFptr, dctx->bmi2);
dctx->HUFptr, ZSTD_DCtx_get_bmi2(dctx));
}
} else {
if (singleStream) {
@@ -150,15 +195,22 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
hufSuccess = HUF_decompress1X1_DCtx_wksp_bmi2(
dctx->entropy.hufTable, dctx->litBuffer, litSize,
istart+lhSize, litCSize, dctx->workspace,
sizeof(dctx->workspace), dctx->bmi2);
sizeof(dctx->workspace), ZSTD_DCtx_get_bmi2(dctx));
#endif
} else {
hufSuccess = HUF_decompress4X_hufOnly_wksp_bmi2(
dctx->entropy.hufTable, dctx->litBuffer, litSize,
istart+lhSize, litCSize, dctx->workspace,
sizeof(dctx->workspace), dctx->bmi2);
sizeof(dctx->workspace), ZSTD_DCtx_get_bmi2(dctx));
}
}
if (dctx->litBufferLocation == ZSTD_split)
{
ZSTD_memcpy(dctx->litExtraBuffer, dctx->litBufferEnd - ZSTD_LITBUFFEREXTRASIZE, ZSTD_LITBUFFEREXTRASIZE);
ZSTD_memmove(dctx->litBuffer + ZSTD_LITBUFFEREXTRASIZE - WILDCOPY_OVERLENGTH, dctx->litBuffer, litSize - ZSTD_LITBUFFEREXTRASIZE);
dctx->litBuffer += ZSTD_LITBUFFEREXTRASIZE - WILDCOPY_OVERLENGTH;
dctx->litBufferEnd -= WILDCOPY_OVERLENGTH;
}
RETURN_ERROR_IF(HUF_isError(hufSuccess), corruption_detected, "");
@@ -166,13 +218,13 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
dctx->litSize = litSize;
dctx->litEntropy = 1;
if (litEncType==set_compressed) dctx->HUFptr = dctx->entropy.hufTable;
ZSTD_memset(dctx->litBuffer + dctx->litSize, 0, WILDCOPY_OVERLENGTH);
return litCSize + lhSize;
}
case set_basic:
{ size_t litSize, lhSize;
U32 const lhlCode = ((istart[0]) >> 2) & 3;
size_t expectedWriteSize = MIN(ZSTD_BLOCKSIZE_MAX, dstCapacity);
switch(lhlCode)
{
case 0: case 2: default: /* note : default is impossible, since lhlCode into [0..3] */
@@ -189,23 +241,36 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
break;
}
RETURN_ERROR_IF(litSize > 0 && dst == NULL, dstSize_tooSmall, "NULL not handled");
RETURN_ERROR_IF(expectedWriteSize < litSize, dstSize_tooSmall, "");
ZSTD_allocateLiteralsBuffer(dctx, dst, dstCapacity, litSize, streaming, expectedWriteSize, 1);
if (lhSize+litSize+WILDCOPY_OVERLENGTH > srcSize) { /* risk reading beyond src buffer with wildcopy */
RETURN_ERROR_IF(litSize+lhSize > srcSize, corruption_detected, "");
ZSTD_memcpy(dctx->litBuffer, istart+lhSize, litSize);
if (dctx->litBufferLocation == ZSTD_split)
{
ZSTD_memcpy(dctx->litBuffer, istart + lhSize, litSize - ZSTD_LITBUFFEREXTRASIZE);
ZSTD_memcpy(dctx->litExtraBuffer, istart + lhSize + litSize - ZSTD_LITBUFFEREXTRASIZE, ZSTD_LITBUFFEREXTRASIZE);
}
else
{
ZSTD_memcpy(dctx->litBuffer, istart + lhSize, litSize);
}
dctx->litPtr = dctx->litBuffer;
dctx->litSize = litSize;
ZSTD_memset(dctx->litBuffer + dctx->litSize, 0, WILDCOPY_OVERLENGTH);
return lhSize+litSize;
}
/* direct reference into compressed stream */
dctx->litPtr = istart+lhSize;
dctx->litSize = litSize;
dctx->litBufferEnd = dctx->litPtr + litSize;
dctx->litBufferLocation = ZSTD_not_in_dst;
return lhSize+litSize;
}
case set_rle:
{ U32 const lhlCode = ((istart[0]) >> 2) & 3;
size_t litSize, lhSize;
size_t expectedWriteSize = MIN(ZSTD_BLOCKSIZE_MAX, dstCapacity);
switch(lhlCode)
{
case 0: case 2: default: /* note : default is impossible, since lhlCode into [0..3] */
@@ -222,8 +287,19 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx,
RETURN_ERROR_IF(srcSize<4, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 3; here we need lhSize+1 = 4");
break;
}
RETURN_ERROR_IF(litSize > 0 && dst == NULL, dstSize_tooSmall, "NULL not handled");
RETURN_ERROR_IF(litSize > ZSTD_BLOCKSIZE_MAX, corruption_detected, "");
ZSTD_memset(dctx->litBuffer, istart[lhSize], litSize + WILDCOPY_OVERLENGTH);
RETURN_ERROR_IF(expectedWriteSize < litSize, dstSize_tooSmall, "");
ZSTD_allocateLiteralsBuffer(dctx, dst, dstCapacity, litSize, streaming, expectedWriteSize, 1);
if (dctx->litBufferLocation == ZSTD_split)
{
ZSTD_memset(dctx->litBuffer, istart[lhSize], litSize - ZSTD_LITBUFFEREXTRASIZE);
ZSTD_memset(dctx->litExtraBuffer, istart[lhSize], ZSTD_LITBUFFEREXTRASIZE);
}
else
{
ZSTD_memset(dctx->litBuffer, istart[lhSize], litSize);
}
dctx->litPtr = dctx->litBuffer;
dctx->litSize = litSize;
return lhSize+1;
@@ -343,7 +419,7 @@ static const ZSTD_seqSymbol ML_defaultDTable[(1<<ML_DEFAULTNORMLOG)+1] = {
}; /* ML_defaultDTable */
static void ZSTD_buildSeqTable_rle(ZSTD_seqSymbol* dt, U32 baseValue, U32 nbAddBits)
static void ZSTD_buildSeqTable_rle(ZSTD_seqSymbol* dt, U32 baseValue, U8 nbAddBits)
{
void* ptr = dt;
ZSTD_seqSymbol_header* const DTableH = (ZSTD_seqSymbol_header*)ptr;
@@ -355,7 +431,7 @@ static void ZSTD_buildSeqTable_rle(ZSTD_seqSymbol* dt, U32 baseValue, U32 nbAddB
cell->nbBits = 0;
cell->nextState = 0;
assert(nbAddBits < 255);
cell->nbAdditionalBits = (BYTE)nbAddBits;
cell->nbAdditionalBits = nbAddBits;
cell->baseValue = baseValue;
}
@@ -367,7 +443,7 @@ static void ZSTD_buildSeqTable_rle(ZSTD_seqSymbol* dt, U32 baseValue, U32 nbAddB
FORCE_INLINE_TEMPLATE
void ZSTD_buildFSETable_body(ZSTD_seqSymbol* dt,
const short* normalizedCounter, unsigned maxSymbolValue,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
unsigned tableLog, void* wksp, size_t wkspSize)
{
ZSTD_seqSymbol* const tableDecode = dt+1;
@@ -478,7 +554,7 @@ void ZSTD_buildFSETable_body(ZSTD_seqSymbol* dt,
tableDecode[u].nbBits = (BYTE) (tableLog - BIT_highbit32(nextState) );
tableDecode[u].nextState = (U16) ( (nextState << tableDecode[u].nbBits) - tableSize);
assert(nbAdditionalBits[symbol] < 255);
tableDecode[u].nbAdditionalBits = (BYTE)nbAdditionalBits[symbol];
tableDecode[u].nbAdditionalBits = nbAdditionalBits[symbol];
tableDecode[u].baseValue = baseValue[symbol];
}
}
@@ -487,7 +563,7 @@ void ZSTD_buildFSETable_body(ZSTD_seqSymbol* dt,
/* Avoids the FORCE_INLINE of the _body() function. */
static void ZSTD_buildFSETable_body_default(ZSTD_seqSymbol* dt,
const short* normalizedCounter, unsigned maxSymbolValue,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
unsigned tableLog, void* wksp, size_t wkspSize)
{
ZSTD_buildFSETable_body(dt, normalizedCounter, maxSymbolValue,
@@ -495,9 +571,9 @@ static void ZSTD_buildFSETable_body_default(ZSTD_seqSymbol* dt,
}
#if DYNAMIC_BMI2
TARGET_ATTRIBUTE("bmi2") static void ZSTD_buildFSETable_body_bmi2(ZSTD_seqSymbol* dt,
BMI2_TARGET_ATTRIBUTE static void ZSTD_buildFSETable_body_bmi2(ZSTD_seqSymbol* dt,
const short* normalizedCounter, unsigned maxSymbolValue,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
unsigned tableLog, void* wksp, size_t wkspSize)
{
ZSTD_buildFSETable_body(dt, normalizedCounter, maxSymbolValue,
@@ -507,7 +583,7 @@ TARGET_ATTRIBUTE("bmi2") static void ZSTD_buildFSETable_body_bmi2(ZSTD_seqSymbol
void ZSTD_buildFSETable(ZSTD_seqSymbol* dt,
const short* normalizedCounter, unsigned maxSymbolValue,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
unsigned tableLog, void* wksp, size_t wkspSize, int bmi2)
{
#if DYNAMIC_BMI2
@@ -529,7 +605,7 @@ void ZSTD_buildFSETable(ZSTD_seqSymbol* dt,
static size_t ZSTD_buildSeqTable(ZSTD_seqSymbol* DTableSpace, const ZSTD_seqSymbol** DTablePtr,
symbolEncodingType_e type, unsigned max, U32 maxLog,
const void* src, size_t srcSize,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
const ZSTD_seqSymbol* defaultTable, U32 flagRepeatTable,
int ddictIsCold, int nbSeq, U32* wksp, size_t wkspSize,
int bmi2)
@@ -541,7 +617,7 @@ static size_t ZSTD_buildSeqTable(ZSTD_seqSymbol* DTableSpace, const ZSTD_seqSymb
RETURN_ERROR_IF((*(const BYTE*)src) > max, corruption_detected, "");
{ U32 const symbol = *(const BYTE*)src;
U32 const baseline = baseValue[symbol];
U32 const nbBits = nbAdditionalBits[symbol];
U8 const nbBits = nbAdditionalBits[symbol];
ZSTD_buildSeqTable_rle(DTableSpace, baseline, nbBits);
}
*DTablePtr = DTableSpace;
@@ -620,7 +696,7 @@ size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr,
LL_defaultDTable, dctx->fseEntropy,
dctx->ddictIsCold, nbSeq,
dctx->workspace, sizeof(dctx->workspace),
dctx->bmi2);
ZSTD_DCtx_get_bmi2(dctx));
RETURN_ERROR_IF(ZSTD_isError(llhSize), corruption_detected, "ZSTD_buildSeqTable failed");
ip += llhSize;
}
@@ -632,7 +708,7 @@ size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr,
OF_defaultDTable, dctx->fseEntropy,
dctx->ddictIsCold, nbSeq,
dctx->workspace, sizeof(dctx->workspace),
dctx->bmi2);
ZSTD_DCtx_get_bmi2(dctx));
RETURN_ERROR_IF(ZSTD_isError(ofhSize), corruption_detected, "ZSTD_buildSeqTable failed");
ip += ofhSize;
}
@@ -644,7 +720,7 @@ size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr,
ML_defaultDTable, dctx->fseEntropy,
dctx->ddictIsCold, nbSeq,
dctx->workspace, sizeof(dctx->workspace),
dctx->bmi2);
ZSTD_DCtx_get_bmi2(dctx));
RETURN_ERROR_IF(ZSTD_isError(mlhSize), corruption_detected, "ZSTD_buildSeqTable failed");
ip += mlhSize;
}
@@ -713,7 +789,7 @@ HINT_INLINE void ZSTD_overlapCopy8(BYTE** op, BYTE const** ip, size_t offset) {
* - ZSTD_overlap_src_before_dst: The src and dst may overlap and may be any distance apart.
* The src buffer must be before the dst buffer.
*/
static void ZSTD_safecopy(BYTE* op, BYTE* const oend_w, BYTE const* ip, ptrdiff_t length, ZSTD_overlap_e ovtype) {
static void ZSTD_safecopy(BYTE* op, const BYTE* const oend_w, BYTE const* ip, ptrdiff_t length, ZSTD_overlap_e ovtype) {
ptrdiff_t const diff = op - ip;
BYTE* const oend = op + length;
@@ -729,6 +805,7 @@ static void ZSTD_safecopy(BYTE* op, BYTE* const oend_w, BYTE const* ip, ptrdiff_
/* Copy 8 bytes and ensure the offset >= 8 when there can be overlap. */
assert(length >= 8);
ZSTD_overlapCopy8(&op, &ip, diff);
length -= 8;
assert(op - ip >= 8);
assert(op <= oend);
}
@@ -743,12 +820,35 @@ static void ZSTD_safecopy(BYTE* op, BYTE* const oend_w, BYTE const* ip, ptrdiff_
assert(oend > oend_w);
ZSTD_wildcopy(op, ip, oend_w - op, ovtype);
ip += oend_w - op;
op = oend_w;
op += oend_w - op;
}
/* Handle the leftovers. */
while (op < oend) *op++ = *ip++;
}
/* ZSTD_safecopyDstBeforeSrc():
* This version allows overlap with dst before src, or handles the non-overlap case with dst after src
* Kept separate from more common ZSTD_safecopy case to avoid performance impact to the safecopy common case */
static void ZSTD_safecopyDstBeforeSrc(BYTE* op, BYTE const* ip, ptrdiff_t length) {
ptrdiff_t const diff = op - ip;
BYTE* const oend = op + length;
if (length < 8 || diff > -8) {
/* Handle short lengths, close overlaps, and dst not before src. */
while (op < oend) *op++ = *ip++;
return;
}
if (op <= oend - WILDCOPY_OVERLENGTH && diff < -WILDCOPY_VECLEN) {
ZSTD_wildcopy(op, ip, oend - WILDCOPY_OVERLENGTH - op, ZSTD_no_overlap);
ip += oend - WILDCOPY_OVERLENGTH - op;
op += oend - WILDCOPY_OVERLENGTH - op;
}
/* Handle the leftovers. */
while (op < oend) *op++ = *ip++;
}
/* ZSTD_execSequenceEnd():
* This version handles cases that are near the end of the output buffer. It requires
* more careful checks to make sure there is no overflow. By separating out these hard
@@ -759,9 +859,9 @@ static void ZSTD_safecopy(BYTE* op, BYTE* const oend_w, BYTE const* ip, ptrdiff_
*/
FORCE_NOINLINE
size_t ZSTD_execSequenceEnd(BYTE* op,
BYTE* const oend, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
BYTE* const oend, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
{
BYTE* const oLitEnd = op + sequence.litLength;
size_t const sequenceLength = sequence.litLength + sequence.matchLength;
@@ -784,27 +884,76 @@ size_t ZSTD_execSequenceEnd(BYTE* op,
if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
/* offset beyond prefix */
RETURN_ERROR_IF(sequence.offset > (size_t)(oLitEnd - virtualStart), corruption_detected, "");
match = dictEnd - (prefixStart-match);
match = dictEnd - (prefixStart - match);
if (match + sequence.matchLength <= dictEnd) {
ZSTD_memmove(oLitEnd, match, sequence.matchLength);
return sequenceLength;
}
/* span extDict & currentPrefixSegment */
{ size_t const length1 = dictEnd - match;
ZSTD_memmove(oLitEnd, match, length1);
op = oLitEnd + length1;
sequence.matchLength -= length1;
match = prefixStart;
} }
ZSTD_memmove(oLitEnd, match, length1);
op = oLitEnd + length1;
sequence.matchLength -= length1;
match = prefixStart;
}
}
ZSTD_safecopy(op, oend_w, match, sequence.matchLength, ZSTD_overlap_src_before_dst);
return sequenceLength;
}
/* ZSTD_execSequenceEndSplitLitBuffer():
* This version is intended to be used during instances where the litBuffer is still split. It is kept separate to avoid performance impact for the good case.
*/
FORCE_NOINLINE
size_t ZSTD_execSequenceEndSplitLitBuffer(BYTE* op,
BYTE* const oend, const BYTE* const oend_w, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
{
BYTE* const oLitEnd = op + sequence.litLength;
size_t const sequenceLength = sequence.litLength + sequence.matchLength;
const BYTE* const iLitEnd = *litPtr + sequence.litLength;
const BYTE* match = oLitEnd - sequence.offset;
/* bounds checks : careful of address space overflow in 32-bit mode */
RETURN_ERROR_IF(sequenceLength > (size_t)(oend - op), dstSize_tooSmall, "last match must fit within dstBuffer");
RETURN_ERROR_IF(sequence.litLength > (size_t)(litLimit - *litPtr), corruption_detected, "try to read beyond literal buffer");
assert(op < op + sequenceLength);
assert(oLitEnd < op + sequenceLength);
/* copy literals */
RETURN_ERROR_IF(op > *litPtr && op < *litPtr + sequence.litLength, dstSize_tooSmall, "output should not catch up to and overwrite literal buffer");
ZSTD_safecopyDstBeforeSrc(op, *litPtr, sequence.litLength);
op = oLitEnd;
*litPtr = iLitEnd;
/* copy Match */
if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
/* offset beyond prefix */
RETURN_ERROR_IF(sequence.offset > (size_t)(oLitEnd - virtualStart), corruption_detected, "");
match = dictEnd - (prefixStart - match);
if (match + sequence.matchLength <= dictEnd) {
ZSTD_memmove(oLitEnd, match, sequence.matchLength);
return sequenceLength;
}
/* span extDict & currentPrefixSegment */
{ size_t const length1 = dictEnd - match;
ZSTD_memmove(oLitEnd, match, length1);
op = oLitEnd + length1;
sequence.matchLength -= length1;
match = prefixStart;
}
}
ZSTD_safecopy(op, oend_w, match, sequence.matchLength, ZSTD_overlap_src_before_dst);
return sequenceLength;
}
HINT_INLINE
size_t ZSTD_execSequence(BYTE* op,
BYTE* const oend, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
BYTE* const oend, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
{
BYTE* const oLitEnd = op + sequence.litLength;
size_t const sequenceLength = sequence.litLength + sequence.matchLength;
@@ -813,6 +962,98 @@ size_t ZSTD_execSequence(BYTE* op,
const BYTE* const iLitEnd = *litPtr + sequence.litLength;
const BYTE* match = oLitEnd - sequence.offset;
assert(op != NULL /* Precondition */);
assert(oend_w < oend /* No underflow */);
/* Handle edge cases in a slow path:
* - Read beyond end of literals
* - Match end is within WILDCOPY_OVERLIMIT of oend
* - 32-bit mode and the match length overflows
*/
if (UNLIKELY(
iLitEnd > litLimit ||
oMatchEnd > oend_w ||
(MEM_32bits() && (size_t)(oend - op) < sequenceLength + WILDCOPY_OVERLENGTH)))
return ZSTD_execSequenceEnd(op, oend, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd);
/* Assumptions (everything else goes into ZSTD_execSequenceEnd()) */
assert(op <= oLitEnd /* No overflow */);
assert(oLitEnd < oMatchEnd /* Non-zero match & no overflow */);
assert(oMatchEnd <= oend /* No underflow */);
assert(iLitEnd <= litLimit /* Literal length is in bounds */);
assert(oLitEnd <= oend_w /* Can wildcopy literals */);
assert(oMatchEnd <= oend_w /* Can wildcopy matches */);
/* Copy Literals:
* Split out litLength <= 16 since it is nearly always true. +1.6% on gcc-9.
* We likely don't need the full 32-byte wildcopy.
*/
assert(WILDCOPY_OVERLENGTH >= 16);
ZSTD_copy16(op, (*litPtr));
if (UNLIKELY(sequence.litLength > 16)) {
ZSTD_wildcopy(op + 16, (*litPtr) + 16, sequence.litLength - 16, ZSTD_no_overlap);
}
op = oLitEnd;
*litPtr = iLitEnd; /* update for next sequence */
/* Copy Match */
if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
/* offset beyond prefix -> go into extDict */
RETURN_ERROR_IF(UNLIKELY(sequence.offset > (size_t)(oLitEnd - virtualStart)), corruption_detected, "");
match = dictEnd + (match - prefixStart);
if (match + sequence.matchLength <= dictEnd) {
ZSTD_memmove(oLitEnd, match, sequence.matchLength);
return sequenceLength;
}
/* span extDict & currentPrefixSegment */
{ size_t const length1 = dictEnd - match;
ZSTD_memmove(oLitEnd, match, length1);
op = oLitEnd + length1;
sequence.matchLength -= length1;
match = prefixStart;
}
}
/* Match within prefix of 1 or more bytes */
assert(op <= oMatchEnd);
assert(oMatchEnd <= oend_w);
assert(match >= prefixStart);
assert(sequence.matchLength >= 1);
/* Nearly all offsets are >= WILDCOPY_VECLEN bytes, which means we can use wildcopy
* without overlap checking.
*/
if (LIKELY(sequence.offset >= WILDCOPY_VECLEN)) {
/* We bet on a full wildcopy for matches, since we expect matches to be
* longer than literals (in general). In silesia, ~10% of matches are longer
* than 16 bytes.
*/
ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength, ZSTD_no_overlap);
return sequenceLength;
}
assert(sequence.offset < WILDCOPY_VECLEN);
/* Copy 8 bytes and spread the offset to be >= 8. */
ZSTD_overlapCopy8(&op, &match, sequence.offset);
/* If the match length is > 8 bytes, then continue with the wildcopy. */
if (sequence.matchLength > 8) {
assert(op < oMatchEnd);
ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength - 8, ZSTD_overlap_src_before_dst);
}
return sequenceLength;
}
HINT_INLINE
size_t ZSTD_execSequenceSplitLitBuffer(BYTE* op,
BYTE* const oend, const BYTE* const oend_w, seq_t sequence,
const BYTE** litPtr, const BYTE* const litLimit,
const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
{
BYTE* const oLitEnd = op + sequence.litLength;
size_t const sequenceLength = sequence.litLength + sequence.matchLength;
BYTE* const oMatchEnd = op + sequenceLength; /* risk : address space overflow (32-bits) */
const BYTE* const iLitEnd = *litPtr + sequence.litLength;
const BYTE* match = oLitEnd - sequence.offset;
assert(op != NULL /* Precondition */);
assert(oend_w < oend /* No underflow */);
/* Handle edge cases in a slow path:
@@ -824,7 +1065,7 @@ size_t ZSTD_execSequence(BYTE* op,
iLitEnd > litLimit ||
oMatchEnd > oend_w ||
(MEM_32bits() && (size_t)(oend - op) < sequenceLength + WILDCOPY_OVERLENGTH)))
return ZSTD_execSequenceEnd(op, oend, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd);
return ZSTD_execSequenceEndSplitLitBuffer(op, oend, oend_w, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd);
/* Assumptions (everything else goes into ZSTD_execSequenceEnd()) */
assert(op <= oLitEnd /* No overflow */);
@@ -892,6 +1133,7 @@ size_t ZSTD_execSequence(BYTE* op,
return sequenceLength;
}
static void
ZSTD_initFseState(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, const ZSTD_seqSymbol* dt)
{
@@ -905,20 +1147,10 @@ ZSTD_initFseState(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, const ZSTD_seqS
}
FORCE_INLINE_TEMPLATE void
ZSTD_updateFseState(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD)
ZSTD_updateFseStateWithDInfo(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, U16 nextState, U32 nbBits)
{
ZSTD_seqSymbol const DInfo = DStatePtr->table[DStatePtr->state];
U32 const nbBits = DInfo.nbBits;
size_t const lowBits = BIT_readBits(bitD, nbBits);
DStatePtr->state = DInfo.nextState + lowBits;
}
FORCE_INLINE_TEMPLATE void
ZSTD_updateFseStateWithDInfo(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, ZSTD_seqSymbol const DInfo)
{
U32 const nbBits = DInfo.nbBits;
size_t const lowBits = BIT_readBits(bitD, nbBits);
DStatePtr->state = DInfo.nextState + lowBits;
DStatePtr->state = nextState + lowBits;
}
/* We need to add at most (ZSTD_WINDOWLOG_MAX_32 - 1) bits to read the maximum
@@ -937,102 +1169,100 @@ FORCE_INLINE_TEMPLATE seq_t
ZSTD_decodeSequence(seqState_t* seqState, const ZSTD_longOffset_e longOffsets)
{
seq_t seq;
ZSTD_seqSymbol const llDInfo = seqState->stateLL.table[seqState->stateLL.state];
ZSTD_seqSymbol const mlDInfo = seqState->stateML.table[seqState->stateML.state];
ZSTD_seqSymbol const ofDInfo = seqState->stateOffb.table[seqState->stateOffb.state];
U32 const llBase = llDInfo.baseValue;
U32 const mlBase = mlDInfo.baseValue;
U32 const ofBase = ofDInfo.baseValue;
BYTE const llBits = llDInfo.nbAdditionalBits;
BYTE const mlBits = mlDInfo.nbAdditionalBits;
BYTE const ofBits = ofDInfo.nbAdditionalBits;
BYTE const totalBits = llBits+mlBits+ofBits;
const ZSTD_seqSymbol* const llDInfo = seqState->stateLL.table + seqState->stateLL.state;
const ZSTD_seqSymbol* const mlDInfo = seqState->stateML.table + seqState->stateML.state;
const ZSTD_seqSymbol* const ofDInfo = seqState->stateOffb.table + seqState->stateOffb.state;
seq.matchLength = mlDInfo->baseValue;
seq.litLength = llDInfo->baseValue;
{ U32 const ofBase = ofDInfo->baseValue;
BYTE const llBits = llDInfo->nbAdditionalBits;
BYTE const mlBits = mlDInfo->nbAdditionalBits;
BYTE const ofBits = ofDInfo->nbAdditionalBits;
BYTE const totalBits = llBits+mlBits+ofBits;
/* sequence */
{ size_t offset;
if (ofBits > 1) {
ZSTD_STATIC_ASSERT(ZSTD_lo_isLongOffset == 1);
ZSTD_STATIC_ASSERT(LONG_OFFSETS_MAX_EXTRA_BITS_32 == 5);
assert(ofBits <= MaxOff);
if (MEM_32bits() && longOffsets && (ofBits >= STREAM_ACCUMULATOR_MIN_32)) {
U32 const extraBits = ofBits - MIN(ofBits, 32 - seqState->DStream.bitsConsumed);
offset = ofBase + (BIT_readBitsFast(&seqState->DStream, ofBits - extraBits) << extraBits);
BIT_reloadDStream(&seqState->DStream);
if (extraBits) offset += BIT_readBitsFast(&seqState->DStream, extraBits);
assert(extraBits <= LONG_OFFSETS_MAX_EXTRA_BITS_32); /* to avoid another reload */
} else {
offset = ofBase + BIT_readBitsFast(&seqState->DStream, ofBits/*>0*/); /* <= (ZSTD_WINDOWLOG_MAX-1) bits */
if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream);
}
seqState->prevOffset[2] = seqState->prevOffset[1];
seqState->prevOffset[1] = seqState->prevOffset[0];
seqState->prevOffset[0] = offset;
} else {
U32 const ll0 = (llBase == 0);
if (LIKELY((ofBits == 0))) {
if (LIKELY(!ll0))
offset = seqState->prevOffset[0];
else {
offset = seqState->prevOffset[1];
seqState->prevOffset[1] = seqState->prevOffset[0];
seqState->prevOffset[0] = offset;
U16 const llNext = llDInfo->nextState;
U16 const mlNext = mlDInfo->nextState;
U16 const ofNext = ofDInfo->nextState;
U32 const llnbBits = llDInfo->nbBits;
U32 const mlnbBits = mlDInfo->nbBits;
U32 const ofnbBits = ofDInfo->nbBits;
/*
* As gcc has better branch and block analyzers, sometimes it is only
* valuable to mark likelyness for clang, it gives around 3-4% of
* performance.
*/
/* sequence */
{ size_t offset;
#if defined(__clang__)
if (LIKELY(ofBits > 1)) {
#else
if (ofBits > 1) {
#endif
ZSTD_STATIC_ASSERT(ZSTD_lo_isLongOffset == 1);
ZSTD_STATIC_ASSERT(LONG_OFFSETS_MAX_EXTRA_BITS_32 == 5);
assert(ofBits <= MaxOff);
if (MEM_32bits() && longOffsets && (ofBits >= STREAM_ACCUMULATOR_MIN_32)) {
U32 const extraBits = ofBits - MIN(ofBits, 32 - seqState->DStream.bitsConsumed);
offset = ofBase + (BIT_readBitsFast(&seqState->DStream, ofBits - extraBits) << extraBits);
BIT_reloadDStream(&seqState->DStream);
if (extraBits) offset += BIT_readBitsFast(&seqState->DStream, extraBits);
assert(extraBits <= LONG_OFFSETS_MAX_EXTRA_BITS_32); /* to avoid another reload */
} else {
offset = ofBase + BIT_readBitsFast(&seqState->DStream, ofBits/*>0*/); /* <= (ZSTD_WINDOWLOG_MAX-1) bits */
if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream);
}
seqState->prevOffset[2] = seqState->prevOffset[1];
seqState->prevOffset[1] = seqState->prevOffset[0];
seqState->prevOffset[0] = offset;
} else {
offset = ofBase + ll0 + BIT_readBitsFast(&seqState->DStream, 1);
{ size_t temp = (offset==3) ? seqState->prevOffset[0] - 1 : seqState->prevOffset[offset];
temp += !temp; /* 0 is not valid; input is corrupted; force offset to 1 */
if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1];
seqState->prevOffset[1] = seqState->prevOffset[0];
seqState->prevOffset[0] = offset = temp;
} } }
seq.offset = offset;
}
seq.matchLength = mlBase;
if (mlBits > 0)
seq.matchLength += BIT_readBitsFast(&seqState->DStream, mlBits/*>0*/);
if (MEM_32bits() && (mlBits+llBits >= STREAM_ACCUMULATOR_MIN_32-LONG_OFFSETS_MAX_EXTRA_BITS_32))
BIT_reloadDStream(&seqState->DStream);
if (MEM_64bits() && UNLIKELY(totalBits >= STREAM_ACCUMULATOR_MIN_64-(LLFSELog+MLFSELog+OffFSELog)))
BIT_reloadDStream(&seqState->DStream);
/* Ensure there are enough bits to read the rest of data in 64-bit mode. */
ZSTD_STATIC_ASSERT(16+LLFSELog+MLFSELog+OffFSELog < STREAM_ACCUMULATOR_MIN_64);
seq.litLength = llBase;
if (llBits > 0)
seq.litLength += BIT_readBitsFast(&seqState->DStream, llBits/*>0*/);
if (MEM_32bits())
BIT_reloadDStream(&seqState->DStream);
DEBUGLOG(6, "seq: litL=%u, matchL=%u, offset=%u",
(U32)seq.litLength, (U32)seq.matchLength, (U32)seq.offset);
/* ANS state update
* gcc-9.0.0 does 2.5% worse with ZSTD_updateFseStateWithDInfo().
* clang-9.2.0 does 7% worse with ZSTD_updateFseState().
* Naturally it seems like ZSTD_updateFseStateWithDInfo() should be the
* better option, so it is the default for other compilers. But, if you
* measure that it is worse, please put up a pull request.
*/
{
#if defined(__GNUC__) && !defined(__clang__)
const int kUseUpdateFseState = 1;
#else
const int kUseUpdateFseState = 0;
#endif
if (kUseUpdateFseState) {
ZSTD_updateFseState(&seqState->stateLL, &seqState->DStream); /* <= 9 bits */
ZSTD_updateFseState(&seqState->stateML, &seqState->DStream); /* <= 9 bits */
if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */
ZSTD_updateFseState(&seqState->stateOffb, &seqState->DStream); /* <= 8 bits */
} else {
ZSTD_updateFseStateWithDInfo(&seqState->stateLL, &seqState->DStream, llDInfo); /* <= 9 bits */
ZSTD_updateFseStateWithDInfo(&seqState->stateML, &seqState->DStream, mlDInfo); /* <= 9 bits */
if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */
ZSTD_updateFseStateWithDInfo(&seqState->stateOffb, &seqState->DStream, ofDInfo); /* <= 8 bits */
U32 const ll0 = (llDInfo->baseValue == 0);
if (LIKELY((ofBits == 0))) {
offset = seqState->prevOffset[ll0];
seqState->prevOffset[1] = seqState->prevOffset[!ll0];
seqState->prevOffset[0] = offset;
} else {
offset = ofBase + ll0 + BIT_readBitsFast(&seqState->DStream, 1);
{ size_t temp = (offset==3) ? seqState->prevOffset[0] - 1 : seqState->prevOffset[offset];
temp += !temp; /* 0 is not valid; input is corrupted; force offset to 1 */
if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1];
seqState->prevOffset[1] = seqState->prevOffset[0];
seqState->prevOffset[0] = offset = temp;
} } }
seq.offset = offset;
}
#if defined(__clang__)
if (UNLIKELY(mlBits > 0))
#else
if (mlBits > 0)
#endif
seq.matchLength += BIT_readBitsFast(&seqState->DStream, mlBits/*>0*/);
if (MEM_32bits() && (mlBits+llBits >= STREAM_ACCUMULATOR_MIN_32-LONG_OFFSETS_MAX_EXTRA_BITS_32))
BIT_reloadDStream(&seqState->DStream);
if (MEM_64bits() && UNLIKELY(totalBits >= STREAM_ACCUMULATOR_MIN_64-(LLFSELog+MLFSELog+OffFSELog)))
BIT_reloadDStream(&seqState->DStream);
/* Ensure there are enough bits to read the rest of data in 64-bit mode. */
ZSTD_STATIC_ASSERT(16+LLFSELog+MLFSELog+OffFSELog < STREAM_ACCUMULATOR_MIN_64);
#if defined(__clang__)
if (UNLIKELY(llBits > 0))
#else
if (llBits > 0)
#endif
seq.litLength += BIT_readBitsFast(&seqState->DStream, llBits/*>0*/);
if (MEM_32bits())
BIT_reloadDStream(&seqState->DStream);
DEBUGLOG(6, "seq: litL=%u, matchL=%u, offset=%u",
(U32)seq.litLength, (U32)seq.matchLength, (U32)seq.offset);
ZSTD_updateFseStateWithDInfo(&seqState->stateLL, &seqState->DStream, llNext, llnbBits); /* <= 9 bits */
ZSTD_updateFseStateWithDInfo(&seqState->stateML, &seqState->DStream, mlNext, mlnbBits); /* <= 9 bits */
if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */
ZSTD_updateFseStateWithDInfo(&seqState->stateOffb, &seqState->DStream, ofNext, ofnbBits); /* <= 8 bits */
}
return seq;
@@ -1085,9 +1315,11 @@ MEM_STATIC void ZSTD_assertValidSequence(
#endif
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG
FORCE_INLINE_TEMPLATE size_t
DONT_VECTORIZE
ZSTD_decompressSequences_body( ZSTD_DCtx* dctx,
ZSTD_decompressSequences_bodySplitLitBuffer( ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
const ZSTD_longOffset_e isLongOffset,
@@ -1099,11 +1331,11 @@ ZSTD_decompressSequences_body( ZSTD_DCtx* dctx,
BYTE* const oend = ostart + maxDstSize;
BYTE* op = ostart;
const BYTE* litPtr = dctx->litPtr;
const BYTE* const litEnd = litPtr + dctx->litSize;
const BYTE* litBufferEnd = dctx->litBufferEnd;
const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
const BYTE* const vBase = (const BYTE*) (dctx->virtualStart);
const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd);
DEBUGLOG(5, "ZSTD_decompressSequences_body");
DEBUGLOG(5, "ZSTD_decompressSequences_bodySplitLitBuffer");
(void)frame;
/* Regen sequences */
@@ -1124,55 +1356,237 @@ ZSTD_decompressSequences_body( ZSTD_DCtx* dctx,
BIT_DStream_endOfBuffer < BIT_DStream_completed &&
BIT_DStream_completed < BIT_DStream_overflow);
/* decompress without overrunning litPtr begins */
{
seq_t sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
/* Align the decompression loop to 32 + 16 bytes.
*
* zstd compiled with gcc-9 on an Intel i9-9900k shows 10% decompression
* speed swings based on the alignment of the decompression loop. This
* performance swing is caused by parts of the decompression loop falling
* out of the DSB. The entire decompression loop should fit in the DSB,
* when it can't we get much worse performance. You can measure if you've
* hit the good case or the bad case with this perf command for some
* compressed file test.zst:
*
* perf stat -e cycles -e instructions -e idq.all_dsb_cycles_any_uops \
* -e idq.all_mite_cycles_any_uops -- ./zstd -tq test.zst
*
* If you see most cycles served out of the MITE you've hit the bad case.
* If you see most cycles served out of the DSB you've hit the good case.
* If it is pretty even then you may be in an okay case.
*
* This issue has been reproduced on the following CPUs:
* - Kabylake: Macbook Pro (15-inch, 2019) 2.4 GHz Intel Core i9
* Use Instruments->Counters to get DSB/MITE cycles.
* I never got performance swings, but I was able to
* go from the good case of mostly DSB to half of the
* cycles served from MITE.
* - Coffeelake: Intel i9-9900k
* - Coffeelake: Intel i7-9700k
*
* I haven't been able to reproduce the instability or DSB misses on any
* of the following CPUS:
* - Haswell
* - Broadwell: Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GH
* - Skylake
*
* Alignment is done for each of the three major decompression loops:
* - ZSTD_decompressSequences_bodySplitLitBuffer - presplit section of the literal buffer
* - ZSTD_decompressSequences_bodySplitLitBuffer - postsplit section of the literal buffer
* - ZSTD_decompressSequences_body
* Alignment choices are made to minimize large swings on bad cases and influence on performance
* from changes external to this code, rather than to overoptimize on the current commit.
*
* If you are seeing performance stability this script can help test.
* It tests on 4 commits in zstd where I saw performance change.
*
* https://gist.github.com/terrelln/9889fc06a423fd5ca6e99351564473f4
*/
#if defined(__GNUC__) && defined(__x86_64__)
/* Align the decompression loop to 32 + 16 bytes.
*
* zstd compiled with gcc-9 on an Intel i9-9900k shows 10% decompression
* speed swings based on the alignment of the decompression loop. This
* performance swing is caused by parts of the decompression loop falling
* out of the DSB. The entire decompression loop should fit in the DSB,
* when it can't we get much worse performance. You can measure if you've
* hit the good case or the bad case with this perf command for some
* compressed file test.zst:
*
* perf stat -e cycles -e instructions -e idq.all_dsb_cycles_any_uops \
* -e idq.all_mite_cycles_any_uops -- ./zstd -tq test.zst
*
* If you see most cycles served out of the MITE you've hit the bad case.
* If you see most cycles served out of the DSB you've hit the good case.
* If it is pretty even then you may be in an okay case.
*
* This issue has been reproduced on the following CPUs:
* - Kabylake: Macbook Pro (15-inch, 2019) 2.4 GHz Intel Core i9
* Use Instruments->Counters to get DSB/MITE cycles.
* I never got performance swings, but I was able to
* go from the good case of mostly DSB to half of the
* cycles served from MITE.
* - Coffeelake: Intel i9-9900k
* - Coffeelake: Intel i7-9700k
*
* I haven't been able to reproduce the instability or DSB misses on any
* of the following CPUS:
* - Haswell
* - Broadwell: Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GH
* - Skylake
*
* If you are seeing performance stability this script can help test.
* It tests on 4 commits in zstd where I saw performance change.
*
* https://gist.github.com/terrelln/9889fc06a423fd5ca6e99351564473f4
*/
__asm__(".p2align 6");
__asm__("nop");
__asm__(".p2align 5");
__asm__("nop");
# if __GNUC__ >= 9
/* better for gcc-9 and gcc-10, worse for clang and gcc-8 */
__asm__(".p2align 3");
# else
__asm__(".p2align 4");
__asm__(".p2align 6");
# if __GNUC__ >= 7
/* good for gcc-7, gcc-9, and gcc-11 */
__asm__("nop");
__asm__(".p2align 5");
__asm__("nop");
__asm__(".p2align 4");
# if __GNUC__ == 8 || __GNUC__ == 10
/* good for gcc-8 and gcc-10 */
__asm__("nop");
__asm__(".p2align 3");
# endif
# endif
#endif
/* Handle the initial state where litBuffer is currently split between dst and litExtraBuffer */
for (; litPtr + sequence.litLength <= dctx->litBufferEnd; ) {
size_t const oneSeqSize = ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequence.litLength - WILDCOPY_OVERLENGTH, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
#endif
if (UNLIKELY(ZSTD_isError(oneSeqSize)))
return oneSeqSize;
DEBUGLOG(6, "regenerated sequence size : %u", (U32)oneSeqSize);
op += oneSeqSize;
if (UNLIKELY(!--nbSeq))
break;
BIT_reloadDStream(&(seqState.DStream));
sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
}
/* If there are more sequences, they will need to read literals from litExtraBuffer; copy over the remainder from dst and update litPtr and litEnd */
if (nbSeq > 0) {
const size_t leftoverLit = dctx->litBufferEnd - litPtr;
if (leftoverLit)
{
RETURN_ERROR_IF(leftoverLit > (size_t)(oend - op), dstSize_tooSmall, "remaining lit must fit within dstBuffer");
ZSTD_safecopyDstBeforeSrc(op, litPtr, leftoverLit);
sequence.litLength -= leftoverLit;
op += leftoverLit;
}
litPtr = dctx->litExtraBuffer;
litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
dctx->litBufferLocation = ZSTD_not_in_dst;
{
size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
#endif
if (UNLIKELY(ZSTD_isError(oneSeqSize)))
return oneSeqSize;
DEBUGLOG(6, "regenerated sequence size : %u", (U32)oneSeqSize);
op += oneSeqSize;
if (--nbSeq)
BIT_reloadDStream(&(seqState.DStream));
}
}
}
if (nbSeq > 0) /* there is remaining lit from extra buffer */
{
#if defined(__GNUC__) && defined(__x86_64__)
__asm__(".p2align 6");
__asm__("nop");
# if __GNUC__ != 7
/* worse for gcc-7 better for gcc-8, gcc-9, and gcc-10 and clang */
__asm__(".p2align 4");
__asm__("nop");
__asm__(".p2align 3");
# elif __GNUC__ >= 11
__asm__(".p2align 3");
# else
__asm__(".p2align 5");
__asm__("nop");
__asm__(".p2align 3");
# endif
#endif
for (; ; ) {
seq_t const sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
#endif
if (UNLIKELY(ZSTD_isError(oneSeqSize)))
return oneSeqSize;
DEBUGLOG(6, "regenerated sequence size : %u", (U32)oneSeqSize);
op += oneSeqSize;
if (UNLIKELY(!--nbSeq))
break;
BIT_reloadDStream(&(seqState.DStream));
}
}
/* check if reached exact end */
DEBUGLOG(5, "ZSTD_decompressSequences_bodySplitLitBuffer: after decode loop, remaining nbSeq : %i", nbSeq);
RETURN_ERROR_IF(nbSeq, corruption_detected, "");
RETURN_ERROR_IF(BIT_reloadDStream(&seqState.DStream) < BIT_DStream_completed, corruption_detected, "");
/* save reps for next block */
{ U32 i; for (i=0; i<ZSTD_REP_NUM; i++) dctx->entropy.rep[i] = (U32)(seqState.prevOffset[i]); }
}
/* last literal segment */
if (dctx->litBufferLocation == ZSTD_split) /* split hasn't been reached yet, first get dst then copy litExtraBuffer */
{
size_t const lastLLSize = litBufferEnd - litPtr;
RETURN_ERROR_IF(lastLLSize > (size_t)(oend - op), dstSize_tooSmall, "");
if (op != NULL) {
ZSTD_memmove(op, litPtr, lastLLSize);
op += lastLLSize;
}
litPtr = dctx->litExtraBuffer;
litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
dctx->litBufferLocation = ZSTD_not_in_dst;
}
{ size_t const lastLLSize = litBufferEnd - litPtr;
RETURN_ERROR_IF(lastLLSize > (size_t)(oend-op), dstSize_tooSmall, "");
if (op != NULL) {
ZSTD_memcpy(op, litPtr, lastLLSize);
op += lastLLSize;
}
}
return op-ostart;
}
FORCE_INLINE_TEMPLATE size_t
DONT_VECTORIZE
ZSTD_decompressSequences_body(ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
const ZSTD_longOffset_e isLongOffset,
const int frame)
{
const BYTE* ip = (const BYTE*)seqStart;
const BYTE* const iend = ip + seqSize;
BYTE* const ostart = (BYTE*)dst;
BYTE* const oend = dctx->litBufferLocation == ZSTD_not_in_dst ? ostart + maxDstSize : dctx->litBuffer;
BYTE* op = ostart;
const BYTE* litPtr = dctx->litPtr;
const BYTE* const litEnd = litPtr + dctx->litSize;
const BYTE* const prefixStart = (const BYTE*)(dctx->prefixStart);
const BYTE* const vBase = (const BYTE*)(dctx->virtualStart);
const BYTE* const dictEnd = (const BYTE*)(dctx->dictEnd);
DEBUGLOG(5, "ZSTD_decompressSequences_body");
(void)frame;
/* Regen sequences */
if (nbSeq) {
seqState_t seqState;
dctx->fseEntropy = 1;
{ U32 i; for (i = 0; i < ZSTD_REP_NUM; i++) seqState.prevOffset[i] = dctx->entropy.rep[i]; }
RETURN_ERROR_IF(
ERR_isError(BIT_initDStream(&seqState.DStream, ip, iend - ip)),
corruption_detected, "");
ZSTD_initFseState(&seqState.stateLL, &seqState.DStream, dctx->LLTptr);
ZSTD_initFseState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr);
ZSTD_initFseState(&seqState.stateML, &seqState.DStream, dctx->MLTptr);
assert(dst != NULL);
ZSTD_STATIC_ASSERT(
BIT_DStream_unfinished < BIT_DStream_completed &&
BIT_DStream_endOfBuffer < BIT_DStream_completed &&
BIT_DStream_completed < BIT_DStream_overflow);
#if defined(__GNUC__) && defined(__x86_64__)
__asm__(".p2align 6");
__asm__("nop");
# if __GNUC__ >= 7
__asm__(".p2align 5");
__asm__("nop");
__asm__(".p2align 3");
# else
__asm__(".p2align 4");
__asm__("nop");
__asm__(".p2align 3");
# endif
#endif
for ( ; ; ) {
seq_t const sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litEnd, prefixStart, vBase, dictEnd);
@@ -1218,6 +1632,16 @@ ZSTD_decompressSequences_default(ZSTD_DCtx* dctx,
{
return ZSTD_decompressSequences_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
static size_t
ZSTD_decompressSequencesSplitLitBuffer_default(ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
const ZSTD_longOffset_e isLongOffset,
const int frame)
{
return ZSTD_decompressSequences_bodySplitLitBuffer(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT
@@ -1250,10 +1674,10 @@ ZSTD_decompressSequencesLong_body(
const BYTE* ip = (const BYTE*)seqStart;
const BYTE* const iend = ip + seqSize;
BYTE* const ostart = (BYTE*)dst;
BYTE* const oend = ostart + maxDstSize;
BYTE* const oend = dctx->litBufferLocation == ZSTD_in_dst ? dctx->litBuffer : ostart + maxDstSize;
BYTE* op = ostart;
const BYTE* litPtr = dctx->litPtr;
const BYTE* const litEnd = litPtr + dctx->litSize;
const BYTE* litBufferEnd = dctx->litBufferEnd;
const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
const BYTE* const dictStart = (const BYTE*) (dctx->virtualStart);
const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd);
@@ -1289,32 +1713,94 @@ ZSTD_decompressSequencesLong_body(
}
RETURN_ERROR_IF(seqNb<seqAdvance, corruption_detected, "");
/* decode and decompress */
for ( ; (BIT_reloadDStream(&(seqState.DStream)) <= BIT_DStream_completed) && (seqNb<nbSeq) ; seqNb++) {
seq_t const sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequences[(seqNb-ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litEnd, prefixStart, dictStart, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[(seqNb-ADVANCED_SEQS) & STORED_SEQS_MASK], prefixStart, dictStart);
#endif
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
/* decompress without stomping litBuffer */
for (; (BIT_reloadDStream(&(seqState.DStream)) <= BIT_DStream_completed) && (seqNb < nbSeq); seqNb++) {
seq_t sequence = ZSTD_decodeSequence(&seqState, isLongOffset);
size_t oneSeqSize;
prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
sequences[seqNb & STORED_SEQS_MASK] = sequence;
op += oneSeqSize;
if (dctx->litBufferLocation == ZSTD_split && litPtr + sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK].litLength > dctx->litBufferEnd)
{
/* lit buffer is reaching split point, empty out the first buffer and transition to litExtraBuffer */
const size_t leftoverLit = dctx->litBufferEnd - litPtr;
if (leftoverLit)
{
RETURN_ERROR_IF(leftoverLit > (size_t)(oend - op), dstSize_tooSmall, "remaining lit must fit within dstBuffer");
ZSTD_safecopyDstBeforeSrc(op, litPtr, leftoverLit);
sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK].litLength -= leftoverLit;
op += leftoverLit;
}
litPtr = dctx->litExtraBuffer;
litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
dctx->litBufferLocation = ZSTD_not_in_dst;
oneSeqSize = ZSTD_execSequence(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], prefixStart, dictStart);
#endif
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
sequences[seqNb & STORED_SEQS_MASK] = sequence;
op += oneSeqSize;
}
else
{
/* lit buffer is either wholly contained in first or second split, or not split at all*/
oneSeqSize = dctx->litBufferLocation == ZSTD_split ?
ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK].litLength - WILDCOPY_OVERLENGTH, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd) :
ZSTD_execSequence(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], prefixStart, dictStart);
#endif
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
sequences[seqNb & STORED_SEQS_MASK] = sequence;
op += oneSeqSize;
}
}
RETURN_ERROR_IF(seqNb<nbSeq, corruption_detected, "");
/* finish queue */
seqNb -= seqAdvance;
for ( ; seqNb<nbSeq ; seqNb++) {
size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequences[seqNb&STORED_SEQS_MASK], &litPtr, litEnd, prefixStart, dictStart, dictEnd);
seq_t *sequence = &(sequences[seqNb&STORED_SEQS_MASK]);
if (dctx->litBufferLocation == ZSTD_split && litPtr + sequence->litLength > dctx->litBufferEnd)
{
const size_t leftoverLit = dctx->litBufferEnd - litPtr;
if (leftoverLit)
{
RETURN_ERROR_IF(leftoverLit > (size_t)(oend - op), dstSize_tooSmall, "remaining lit must fit within dstBuffer");
ZSTD_safecopyDstBeforeSrc(op, litPtr, leftoverLit);
sequence->litLength -= leftoverLit;
op += leftoverLit;
}
litPtr = dctx->litExtraBuffer;
litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
dctx->litBufferLocation = ZSTD_not_in_dst;
{
size_t const oneSeqSize = ZSTD_execSequence(op, oend, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[seqNb&STORED_SEQS_MASK], prefixStart, dictStart);
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[seqNb&STORED_SEQS_MASK], prefixStart, dictStart);
#endif
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
op += oneSeqSize;
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
op += oneSeqSize;
}
}
else
{
size_t const oneSeqSize = dctx->litBufferLocation == ZSTD_split ?
ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequence->litLength - WILDCOPY_OVERLENGTH, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd) :
ZSTD_execSequence(op, oend, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE)
assert(!ZSTD_isError(oneSeqSize));
if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[seqNb&STORED_SEQS_MASK], prefixStart, dictStart);
#endif
if (ZSTD_isError(oneSeqSize)) return oneSeqSize;
op += oneSeqSize;
}
}
/* save reps for next block */
@@ -1322,10 +1808,21 @@ ZSTD_decompressSequencesLong_body(
}
/* last literal segment */
{ size_t const lastLLSize = litEnd - litPtr;
if (dctx->litBufferLocation == ZSTD_split) /* first deplete literal buffer in dst, then copy litExtraBuffer */
{
size_t const lastLLSize = litBufferEnd - litPtr;
RETURN_ERROR_IF(lastLLSize > (size_t)(oend - op), dstSize_tooSmall, "");
if (op != NULL) {
ZSTD_memmove(op, litPtr, lastLLSize);
op += lastLLSize;
}
litPtr = dctx->litExtraBuffer;
litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
}
{ size_t const lastLLSize = litBufferEnd - litPtr;
RETURN_ERROR_IF(lastLLSize > (size_t)(oend-op), dstSize_tooSmall, "");
if (op != NULL) {
ZSTD_memcpy(op, litPtr, lastLLSize);
ZSTD_memmove(op, litPtr, lastLLSize);
op += lastLLSize;
}
}
@@ -1349,7 +1846,7 @@ ZSTD_decompressSequencesLong_default(ZSTD_DCtx* dctx,
#if DYNAMIC_BMI2
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG
static TARGET_ATTRIBUTE("bmi2") size_t
static BMI2_TARGET_ATTRIBUTE size_t
DONT_VECTORIZE
ZSTD_decompressSequences_bmi2(ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
@@ -1359,10 +1856,20 @@ ZSTD_decompressSequences_bmi2(ZSTD_DCtx* dctx,
{
return ZSTD_decompressSequences_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
static BMI2_TARGET_ATTRIBUTE size_t
DONT_VECTORIZE
ZSTD_decompressSequencesSplitLitBuffer_bmi2(ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
const ZSTD_longOffset_e isLongOffset,
const int frame)
{
return ZSTD_decompressSequences_bodySplitLitBuffer(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT
static TARGET_ATTRIBUTE("bmi2") size_t
static BMI2_TARGET_ATTRIBUTE size_t
ZSTD_decompressSequencesLong_bmi2(ZSTD_DCtx* dctx,
void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
@@ -1391,11 +1898,25 @@ ZSTD_decompressSequences(ZSTD_DCtx* dctx, void* dst, size_t maxDstSize,
{
DEBUGLOG(5, "ZSTD_decompressSequences");
#if DYNAMIC_BMI2
if (dctx->bmi2) {
if (ZSTD_DCtx_get_bmi2(dctx)) {
return ZSTD_decompressSequences_bmi2(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif
return ZSTD_decompressSequences_default(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
return ZSTD_decompressSequences_default(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
static size_t
ZSTD_decompressSequencesSplitLitBuffer(ZSTD_DCtx* dctx, void* dst, size_t maxDstSize,
const void* seqStart, size_t seqSize, int nbSeq,
const ZSTD_longOffset_e isLongOffset,
const int frame)
{
DEBUGLOG(5, "ZSTD_decompressSequencesSplitLitBuffer");
#if DYNAMIC_BMI2
if (ZSTD_DCtx_get_bmi2(dctx)) {
return ZSTD_decompressSequencesSplitLitBuffer_bmi2(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif
return ZSTD_decompressSequencesSplitLitBuffer_default(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */
@@ -1415,7 +1936,7 @@ ZSTD_decompressSequencesLong(ZSTD_DCtx* dctx,
{
DEBUGLOG(5, "ZSTD_decompressSequencesLong");
#if DYNAMIC_BMI2
if (dctx->bmi2) {
if (ZSTD_DCtx_get_bmi2(dctx)) {
return ZSTD_decompressSequencesLong_bmi2(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame);
}
#endif
@@ -1456,7 +1977,7 @@ ZSTD_getLongOffsetsShare(const ZSTD_seqSymbol* offTable)
size_t
ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize, const int frame)
const void* src, size_t srcSize, const int frame, const streaming_operation streaming)
{ /* blockType == blockCompressed */
const BYTE* ip = (const BYTE*)src;
/* isLongOffset must be true if there are long offsets.
@@ -1471,7 +1992,7 @@ ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
RETURN_ERROR_IF(srcSize >= ZSTD_BLOCKSIZE_MAX, srcSize_wrong, "");
/* Decode literals section */
{ size_t const litCSize = ZSTD_decodeLiteralsBlock(dctx, src, srcSize);
{ size_t const litCSize = ZSTD_decodeLiteralsBlock(dctx, src, srcSize, dst, dstCapacity, streaming);
DEBUGLOG(5, "ZSTD_decodeLiteralsBlock : %u", (U32)litCSize);
if (ZSTD_isError(litCSize)) return litCSize;
ip += litCSize;
@@ -1519,7 +2040,10 @@ ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG
/* else */
return ZSTD_decompressSequences(dctx, dst, dstCapacity, ip, srcSize, nbSeq, isLongOffset, frame);
if (dctx->litBufferLocation == ZSTD_split)
return ZSTD_decompressSequencesSplitLitBuffer(dctx, dst, dstCapacity, ip, srcSize, nbSeq, isLongOffset, frame);
else
return ZSTD_decompressSequences(dctx, dst, dstCapacity, ip, srcSize, nbSeq, isLongOffset, frame);
#endif
}
}
@@ -1542,7 +2066,7 @@ size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx,
{
size_t dSize;
ZSTD_checkContinuity(dctx, dst, dstCapacity);
dSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 0);
dSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 0, not_streaming);
dctx->previousDstEnd = (char*)dst + dSize;
return dSize;
}
lib/decompress/zstd_decompress_block.h
+8 -2
View File
@@ -33,6 +33,12 @@
*/
/* Streaming state is used to inform allocation of the literal buffer */
typedef enum {
not_streaming = 0,
is_streaming = 1
} streaming_operation;
/* ZSTD_decompressBlock_internal() :
* decompress block, starting at `src`,
* into destination buffer `dst`.
@@ -41,7 +47,7 @@
*/
size_t ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize, const int frame);
const void* src, size_t srcSize, const int frame, const streaming_operation streaming);
/* ZSTD_buildFSETable() :
* generate FSE decoding table for one symbol (ll, ml or off)
@@ -54,7 +60,7 @@ size_t ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx,
*/
void ZSTD_buildFSETable(ZSTD_seqSymbol* dt,
const short* normalizedCounter, unsigned maxSymbolValue,
const U32* baseValue, const U32* nbAdditionalBits,
const U32* baseValue, const U8* nbAdditionalBits,
unsigned tableLog, void* wksp, size_t wkspSize,
int bmi2);
lib/decompress/zstd_decompress_internal.h
+34 -3
View File
@@ -20,7 +20,7 @@
* Dependencies
*********************************************************/
#include "../common/mem.h" /* BYTE, U16, U32 */
#include "../common/zstd_internal.h" /* ZSTD_seqSymbol */
#include "../common/zstd_internal.h" /* constants : MaxLL, MaxML, MaxOff, LLFSELog, etc. */
@@ -40,7 +40,7 @@ static UNUSED_ATTR const U32 OF_base[MaxOff+1] = {
0xFFFD, 0x1FFFD, 0x3FFFD, 0x7FFFD, 0xFFFFD, 0x1FFFFD, 0x3FFFFD, 0x7FFFFD,
0xFFFFFD, 0x1FFFFFD, 0x3FFFFFD, 0x7FFFFFD, 0xFFFFFFD, 0x1FFFFFFD, 0x3FFFFFFD, 0x7FFFFFFD };
static UNUSED_ATTR const U32 OF_bits[MaxOff+1] = {
static UNUSED_ATTR const U8 OF_bits[MaxOff+1] = {
0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23,
@@ -106,6 +106,22 @@ typedef struct {
size_t ddictPtrCount;
} ZSTD_DDictHashSet;
#ifndef ZSTD_DECODER_INTERNAL_BUFFER
# define ZSTD_DECODER_INTERNAL_BUFFER (1 << 16)
#endif
#define ZSTD_LBMIN 64
#define ZSTD_LBMAX (128 << 10)
/* extra buffer, compensates when dst is not large enough to store litBuffer */
#define ZSTD_LITBUFFEREXTRASIZE BOUNDED(ZSTD_LBMIN, ZSTD_DECODER_INTERNAL_BUFFER, ZSTD_LBMAX)
typedef enum {
ZSTD_not_in_dst = 0, /* Stored entirely within litExtraBuffer */
ZSTD_in_dst = 1, /* Stored entirely within dst (in memory after current output write) */
ZSTD_split = 2 /* Split between litExtraBuffer and dst */
} ZSTD_litLocation_e;
struct ZSTD_DCtx_s
{
const ZSTD_seqSymbol* LLTptr;
@@ -136,7 +152,9 @@ struct ZSTD_DCtx_s
size_t litSize;
size_t rleSize;
size_t staticSize;
#if DYNAMIC_BMI2 != 0
int bmi2; /* == 1 if the CPU supports BMI2 and 0 otherwise. CPU support is determined dynamically once per context lifetime. */
#endif
/* dictionary */
ZSTD_DDict* ddictLocal;
@@ -158,16 +176,21 @@ struct ZSTD_DCtx_s
size_t outStart;
size_t outEnd;
size_t lhSize;
#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1)
void* legacyContext;
U32 previousLegacyVersion;
U32 legacyVersion;
#endif
U32 hostageByte;
int noForwardProgress;
ZSTD_bufferMode_e outBufferMode;
ZSTD_outBuffer expectedOutBuffer;
/* workspace */
BYTE litBuffer[ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH];
BYTE* litBuffer;
const BYTE* litBufferEnd;
ZSTD_litLocation_e litBufferLocation;
BYTE litExtraBuffer[ZSTD_LITBUFFEREXTRASIZE + WILDCOPY_OVERLENGTH]; /* literal buffer can be split between storage within dst and within this scratch buffer */
BYTE headerBuffer[ZSTD_FRAMEHEADERSIZE_MAX];
size_t oversizedDuration;
@@ -183,6 +206,14 @@ struct ZSTD_DCtx_s
#endif
}; /* typedef'd to ZSTD_DCtx within "zstd.h" */
MEM_STATIC int ZSTD_DCtx_get_bmi2(const struct ZSTD_DCtx_s *dctx) {
#if DYNAMIC_BMI2 != 0
return dctx->bmi2;
#else
(void)dctx;
return 0;
#endif
}
/*-*******************************************************
* Shared internal functions
lib/deprecated/zbuff_compress.c
+23 -3
View File
@@ -15,6 +15,7 @@
***************************************/
#define ZBUFF_STATIC_LINKING_ONLY
#include "zbuff.h"
#include "../common/error_private.h"
/*-***********************************************************
@@ -73,13 +74,32 @@ size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc,
ZSTD_parameters params, unsigned long long pledgedSrcSize)
{
if (pledgedSrcSize==0) pledgedSrcSize = ZSTD_CONTENTSIZE_UNKNOWN; /* preserve "0 == unknown" behavior */
return ZSTD_initCStream_advanced(zbc, dict, dictSize, params, pledgedSrcSize);
}
FORWARD_IF_ERROR(ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setPledgedSrcSize(zbc, pledgedSrcSize), "");
FORWARD_IF_ERROR(ZSTD_checkCParams(params.cParams), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_windowLog, params.cParams.windowLog), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_hashLog, params.cParams.hashLog), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_chainLog, params.cParams.chainLog), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_searchLog, params.cParams.searchLog), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_minMatch, params.cParams.minMatch), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_targetLength, params.cParams.targetLength), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_strategy, params.cParams.strategy), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_contentSizeFlag, params.fParams.contentSizeFlag), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_checksumFlag, params.fParams.checksumFlag), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_dictIDFlag, params.fParams.noDictIDFlag), "");
FORWARD_IF_ERROR(ZSTD_CCtx_loadDictionary(zbc, dict, dictSize), "");
return 0;
}
size_t ZBUFF_compressInitDictionary(ZBUFF_CCtx* zbc, const void* dict, size_t dictSize, int compressionLevel)
{
return ZSTD_initCStream_usingDict(zbc, dict, dictSize, compressionLevel);
FORWARD_IF_ERROR(ZSTD_CCtx_reset(zbc, ZSTD_reset_session_only), "");
FORWARD_IF_ERROR(ZSTD_CCtx_setParameter(zbc, ZSTD_c_compressionLevel, compressionLevel), "");
FORWARD_IF_ERROR(ZSTD_CCtx_loadDictionary(zbc, dict, dictSize), "");
return 0;
}
size_t ZBUFF_compressInit(ZBUFF_CCtx* zbc, int compressionLevel)
lib/dictBuilder/cover.c
+9 -2
View File
@@ -40,6 +40,13 @@
/*-*************************************
* Constants
***************************************/
/**
* There are 32bit indexes used to ref samples, so limit samples size to 4GB
* on 64bit builds.
* For 32bit builds we choose 1 GB.
* Most 32bit platforms have 2GB user-mode addressable space and we allocate a large
* contiguous buffer, so 1GB is already a high limit.
*/
#define COVER_MAX_SAMPLES_SIZE (sizeof(size_t) == 8 ? ((unsigned)-1) : ((unsigned)1 GB))
#define COVER_DEFAULT_SPLITPOINT 1.0
@@ -47,7 +54,7 @@
* Console display
***************************************/
#ifndef LOCALDISPLAYLEVEL
static int g_displayLevel = 2;
static int g_displayLevel = 0;
#endif
#undef DISPLAY
#define DISPLAY(...) \
@@ -735,7 +742,7 @@ ZDICTLIB_API size_t ZDICT_trainFromBuffer_cover(
COVER_map_t activeDmers;
parameters.splitPoint = 1.0;
/* Initialize global data */
g_displayLevel = parameters.zParams.notificationLevel;
g_displayLevel = (int)parameters.zParams.notificationLevel;
/* Checks */
if (!COVER_checkParameters(parameters, dictBufferCapacity)) {
DISPLAYLEVEL(1, "Cover parameters incorrect\n");
lib/dictBuilder/fastcover.c
+11 -4
View File
@@ -32,6 +32,13 @@
/*-*************************************
* Constants
***************************************/
/**
* There are 32bit indexes used to ref samples, so limit samples size to 4GB
* on 64bit builds.
* For 32bit builds we choose 1 GB.
* Most 32bit platforms have 2GB user-mode addressable space and we allocate a large
* contiguous buffer, so 1GB is already a high limit.
*/
#define FASTCOVER_MAX_SAMPLES_SIZE (sizeof(size_t) == 8 ? ((unsigned)-1) : ((unsigned)1 GB))
#define FASTCOVER_MAX_F 31
#define FASTCOVER_MAX_ACCEL 10
@@ -44,7 +51,7 @@
* Console display
***************************************/
#ifndef LOCALDISPLAYLEVEL
static int g_displayLevel = 2;
static int g_displayLevel = 0;
#endif
#undef DISPLAY
#define DISPLAY(...) \
@@ -549,7 +556,7 @@ ZDICT_trainFromBuffer_fastCover(void* dictBuffer, size_t dictBufferCapacity,
ZDICT_cover_params_t coverParams;
FASTCOVER_accel_t accelParams;
/* Initialize global data */
g_displayLevel = parameters.zParams.notificationLevel;
g_displayLevel = (int)parameters.zParams.notificationLevel;
/* Assign splitPoint and f if not provided */
parameters.splitPoint = 1.0;
parameters.f = parameters.f == 0 ? DEFAULT_F : parameters.f;
@@ -632,7 +639,7 @@ ZDICT_optimizeTrainFromBuffer_fastCover(
const unsigned accel = parameters->accel == 0 ? DEFAULT_ACCEL : parameters->accel;
const unsigned shrinkDict = 0;
/* Local variables */
const int displayLevel = parameters->zParams.notificationLevel;
const int displayLevel = (int)parameters->zParams.notificationLevel;
unsigned iteration = 1;
unsigned d;
unsigned k;
@@ -716,7 +723,7 @@ ZDICT_optimizeTrainFromBuffer_fastCover(
data->parameters.splitPoint = splitPoint;
data->parameters.steps = kSteps;
data->parameters.shrinkDict = shrinkDict;
data->parameters.zParams.notificationLevel = g_displayLevel;
data->parameters.zParams.notificationLevel = (unsigned)g_displayLevel;
/* Check the parameters */
if (!FASTCOVER_checkParameters(data->parameters, dictBufferCapacity,
data->ctx->f, accel)) {
lib/dictBuilder/zdict.c
+99 -28
View File
@@ -135,22 +135,32 @@ static unsigned ZDICT_NbCommonBytes (size_t val)
if (MEM_isLittleEndian()) {
if (MEM_64bits()) {
# if defined(_MSC_VER) && defined(_WIN64)
unsigned long r = 0;
_BitScanForward64( &r, (U64)val );
return (unsigned)(r>>3);
if (val != 0) {
unsigned long r;
_BitScanForward64(&r, (U64)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_ctzll((U64)val) >> 3);
return (unsigned)(__builtin_ctzll((U64)val) >> 3);
# else
static const int DeBruijnBytePos[64] = { 0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7, 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7, 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6, 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7 };
return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
# endif
} else { /* 32 bits */
# if defined(_MSC_VER)
unsigned long r=0;
_BitScanForward( &r, (U32)val );
return (unsigned)(r>>3);
if (val != 0) {
unsigned long r;
_BitScanForward(&r, (U32)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_ctz((U32)val) >> 3);
return (unsigned)(__builtin_ctz((U32)val) >> 3);
# else
static const int DeBruijnBytePos[32] = { 0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1, 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1 };
return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
@@ -159,11 +169,16 @@ static unsigned ZDICT_NbCommonBytes (size_t val)
} else { /* Big Endian CPU */
if (MEM_64bits()) {
# if defined(_MSC_VER) && defined(_WIN64)
unsigned long r = 0;
_BitScanReverse64( &r, val );
return (unsigned)(r>>3);
if (val != 0) {
unsigned long r;
_BitScanReverse64(&r, val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_clzll(val) >> 3);
return (unsigned)(__builtin_clzll(val) >> 3);
# else
unsigned r;
const unsigned n32 = sizeof(size_t)*4; /* calculate this way due to compiler complaining in 32-bits mode */
@@ -174,11 +189,16 @@ static unsigned ZDICT_NbCommonBytes (size_t val)
# endif
} else { /* 32 bits */
# if defined(_MSC_VER)
unsigned long r = 0;
_BitScanReverse( &r, (unsigned long)val );
return (unsigned)(r>>3);
if (val != 0) {
unsigned long r;
_BitScanReverse(&r, (unsigned long)val);
return (unsigned)(r >> 3);
} else {
/* Should not reach this code path */
__assume(0);
}
# elif defined(__GNUC__) && (__GNUC__ >= 3)
return (__builtin_clz((U32)val) >> 3);
return (unsigned)(__builtin_clz((U32)val) >> 3);
# else
unsigned r;
if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; }
@@ -235,7 +255,7 @@ static dictItem ZDICT_analyzePos(
U32 savings[LLIMIT] = {0};
const BYTE* b = (const BYTE*)buffer;
size_t maxLength = LLIMIT;
size_t pos = suffix[start];
size_t pos = (size_t)suffix[start];
U32 end = start;
dictItem solution;
@@ -369,7 +389,7 @@ static dictItem ZDICT_analyzePos(
savings[i] = savings[i-1] + (lengthList[i] * (i-3));
DISPLAYLEVEL(4, "Selected dict at position %u, of length %u : saves %u (ratio: %.2f) \n",
(unsigned)pos, (unsigned)maxLength, (unsigned)savings[maxLength], (double)savings[maxLength] / maxLength);
(unsigned)pos, (unsigned)maxLength, (unsigned)savings[maxLength], (double)savings[maxLength] / (double)maxLength);
solution.pos = (U32)pos;
solution.length = (U32)maxLength;
@@ -379,7 +399,7 @@ static dictItem ZDICT_analyzePos(
{ U32 id;
for (id=start; id<end; id++) {
U32 p, pEnd, length;
U32 const testedPos = suffix[id];
U32 const testedPos = (U32)suffix[id];
if (testedPos == pos)
length = solution.length;
else {
@@ -442,7 +462,7 @@ static U32 ZDICT_tryMerge(dictItem* table, dictItem elt, U32 eltNbToSkip, const
if ((table[u].pos + table[u].length >= elt.pos) && (table[u].pos < elt.pos)) { /* overlap, existing < new */
/* append */
int const addedLength = (int)eltEnd - (table[u].pos + table[u].length);
int const addedLength = (int)eltEnd - (int)(table[u].pos + table[u].length);
table[u].savings += elt.length / 8; /* rough approx bonus */
if (addedLength > 0) { /* otherwise, elt fully included into existing */
table[u].length += addedLength;
@@ -766,6 +786,13 @@ static size_t ZDICT_analyzeEntropy(void* dstBuffer, size_t maxDstSize,
pos += fileSizes[u];
}
if (notificationLevel >= 4) {
/* writeStats */
DISPLAYLEVEL(4, "Offset Code Frequencies : \n");
for (u=0; u<=offcodeMax; u++) {
DISPLAYLEVEL(4, "%2u :%7u \n", u, offcodeCount[u]);
} }
/* analyze, build stats, starting with literals */
{ size_t maxNbBits = HUF_buildCTable (hufTable, countLit, 255, huffLog);
if (HUF_isError(maxNbBits)) {
@@ -872,7 +899,7 @@ static size_t ZDICT_analyzeEntropy(void* dstBuffer, size_t maxDstSize,
MEM_writeLE32(dstPtr+8, bestRepOffset[2].offset);
#else
/* at this stage, we don't use the result of "most common first offset",
as the impact of statistics is not properly evaluated */
* as the impact of statistics is not properly evaluated */
MEM_writeLE32(dstPtr+0, repStartValue[0]);
MEM_writeLE32(dstPtr+4, repStartValue[1]);
MEM_writeLE32(dstPtr+8, repStartValue[2]);
@@ -888,6 +915,17 @@ _cleanup:
}
/**
* @returns the maximum repcode value
*/
static U32 ZDICT_maxRep(U32 const reps[ZSTD_REP_NUM])
{
U32 maxRep = reps[0];
int r;
for (r = 1; r < ZSTD_REP_NUM; ++r)
maxRep = MAX(maxRep, reps[r]);
return maxRep;
}
size_t ZDICT_finalizeDictionary(void* dictBuffer, size_t dictBufferCapacity,
const void* customDictContent, size_t dictContentSize,
@@ -899,11 +937,13 @@ size_t ZDICT_finalizeDictionary(void* dictBuffer, size_t dictBufferCapacity,
BYTE header[HBUFFSIZE];
int const compressionLevel = (params.compressionLevel == 0) ? ZSTD_CLEVEL_DEFAULT : params.compressionLevel;
U32 const notificationLevel = params.notificationLevel;
/* The final dictionary content must be at least as large as the largest repcode */
size_t const minContentSize = (size_t)ZDICT_maxRep(repStartValue);
size_t paddingSize;
/* check conditions */
DEBUGLOG(4, "ZDICT_finalizeDictionary");
if (dictBufferCapacity < dictContentSize) return ERROR(dstSize_tooSmall);
if (dictContentSize < ZDICT_CONTENTSIZE_MIN) return ERROR(srcSize_wrong);
if (dictBufferCapacity < ZDICT_DICTSIZE_MIN) return ERROR(dstSize_tooSmall);
/* dictionary header */
@@ -927,12 +967,43 @@ size_t ZDICT_finalizeDictionary(void* dictBuffer, size_t dictBufferCapacity,
hSize += eSize;
}
/* copy elements in final buffer ; note : src and dst buffer can overlap */
if (hSize + dictContentSize > dictBufferCapacity) dictContentSize = dictBufferCapacity - hSize;
{ size_t const dictSize = hSize + dictContentSize;
char* dictEnd = (char*)dictBuffer + dictSize;
memmove(dictEnd - dictContentSize, customDictContent, dictContentSize);
memcpy(dictBuffer, header, hSize);
/* Shrink the content size if it doesn't fit in the buffer */
if (hSize + dictContentSize > dictBufferCapacity) {
dictContentSize = dictBufferCapacity - hSize;
}
/* Pad the dictionary content with zeros if it is too small */
if (dictContentSize < minContentSize) {
RETURN_ERROR_IF(hSize + minContentSize > dictBufferCapacity, dstSize_tooSmall,
"dictBufferCapacity too small to fit max repcode");
paddingSize = minContentSize - dictContentSize;
} else {
paddingSize = 0;
}
{
size_t const dictSize = hSize + paddingSize + dictContentSize;
/* The dictionary consists of the header, optional padding, and the content.
* The padding comes before the content because the "best" position in the
* dictionary is the last byte.
*/
BYTE* const outDictHeader = (BYTE*)dictBuffer;
BYTE* const outDictPadding = outDictHeader + hSize;
BYTE* const outDictContent = outDictPadding + paddingSize;
assert(dictSize <= dictBufferCapacity);
assert(outDictContent + dictContentSize == (BYTE*)dictBuffer + dictSize);
/* First copy the customDictContent into its final location.
* `customDictContent` and `dictBuffer` may overlap, so we must
* do this before any other writes into the output buffer.
* Then copy the header & padding into the output buffer.
*/
memmove(outDictContent, customDictContent, dictContentSize);
memcpy(outDictHeader, header, hSize);
memset(outDictPadding, 0, paddingSize);
return dictSize;
}
}
lib/legacy/zstd_v01.c
+2 -6
View File
@@ -204,10 +204,7 @@ typedef signed long long S64;
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef FSE_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define FSE_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define FSE_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -343,8 +340,7 @@ FORCE_INLINE unsigned FSE_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r;
_BitScanReverse ( &r, val );
return (unsigned) r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (GCC_VERSION >= 304) /* GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v02.c
+3 -7
View File
@@ -129,10 +129,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -353,9 +350,8 @@ MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BIT_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v03.c
+3 -7
View File
@@ -130,10 +130,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -356,9 +353,8 @@ MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BIT_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v04.c
+3 -7
View File
@@ -101,10 +101,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -627,9 +624,8 @@ MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BIT_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v05.c
+3 -7
View File
@@ -120,10 +120,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -756,9 +753,8 @@ MEM_STATIC size_t BITv05_readBitsFast(BITv05_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BITv05_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v06.c
+3 -7
View File
@@ -122,10 +122,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -860,9 +857,8 @@ MEM_STATIC size_t BITv06_readBitsFast(BITv06_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BITv06_highbit32 ( U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/legacy/zstd_v07.c
+3 -7
View File
@@ -282,10 +282,7 @@ extern "C" {
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
# define MEM_FORCE_MEMORY_ACCESS 2
# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \
(defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) ))
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
@@ -530,9 +527,8 @@ MEM_STATIC size_t BITv07_readBitsFast(BITv07_DStream_t* bitD, unsigned nbBits);
MEM_STATIC unsigned BITv07_highbit32 (U32 val)
{
# if defined(_MSC_VER) /* Visual */
unsigned long r=0;
_BitScanReverse ( &r, val );
return (unsigned) r;
unsigned long r;
return _BitScanReverse(&r, val) ? (unsigned)r : 0;
# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */
return __builtin_clz (val) ^ 31;
# else /* Software version */
lib/libzstd.mk
+185
View File
@@ -0,0 +1,185 @@
# ################################################################
# Copyright (c) Yann Collet, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under both the BSD-style license (found in the
# LICENSE file in the root directory of this source tree) and the GPLv2 (found
# in the COPYING file in the root directory of this source tree).
# You may select, at your option, one of the above-listed licenses.
# ################################################################
##################################################################
# Input Variables
##################################################################
# Zstd lib directory
LIBZSTD ?= ./
# Legacy support
ZSTD_LEGACY_SUPPORT ?= 5
ZSTD_LEGACY_MULTITHREADED_API ?= 0
# Build size optimizations
HUF_FORCE_DECOMPRESS_X1 ?= 0
HUF_FORCE_DECOMPRESS_X2 ?= 0
ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT ?= 0
ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG ?= 0
ZSTD_NO_INLINE ?= 0
ZSTD_STRIP_ERROR_STRINGS ?= 0
# Assembly support
ZSTD_NO_ASM ?= 0
##################################################################
# libzstd helpers
##################################################################
# Make 4.3 doesn't support '\#' anymore (https://lwn.net/Articles/810071/)
NUM_SYMBOL := \#
# define silent mode as default (verbose mode with V=1 or VERBOSE=1)
$(V)$(VERBOSE).SILENT:
# When cross-compiling from linux to windows,
# one might need to specify TARGET_SYSTEM as "Windows."
# Building from Fedora fails without it.
# (but Ubuntu and Debian don't need to set anything)
TARGET_SYSTEM ?= $(OS)
# Version numbers
LIBVER_SRC := $(LIBZSTD)/zstd.h
LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
LIBVER := $(shell echo $(LIBVER_SCRIPT))
CCVER := $(shell $(CC) --version)
ZSTD_VERSION?= $(LIBVER)
# ZSTD_LIB_MINIFY is a helper variable that
# configures a bunch of other variables to space-optimized defaults.
ZSTD_LIB_MINIFY ?= 0
ifneq ($(ZSTD_LIB_MINIFY), 0)
HAVE_CC_OZ ?= $(shell echo "" | $(CC) -Oz -x c -c - -o /dev/null 2> /dev/null && echo 1 || echo 0)
ZSTD_LEGACY_SUPPORT ?= 0
ZSTD_LIB_DEPRECATED ?= 0
HUF_FORCE_DECOMPRESS_X1 ?= 1
ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT ?= 1
ZSTD_NO_INLINE ?= 1
ZSTD_STRIP_ERROR_STRINGS ?= 1
ifneq ($(HAVE_CC_OZ), 0)
# Some compilers (clang) support an even more space-optimized setting.
CFLAGS += -Oz
else
CFLAGS += -Os
endif
CFLAGS += -fno-stack-protector -fomit-frame-pointer -fno-ident \
-DDYNAMIC_BMI2=0 -DNDEBUG
else
CFLAGS += -O3
endif
DEBUGLEVEL ?= 0
CPPFLAGS += -DXXH_NAMESPACE=ZSTD_ -DDEBUGLEVEL=$(DEBUGLEVEL)
ifeq ($(TARGET_SYSTEM),Windows_NT) # MinGW assumed
CPPFLAGS += -D__USE_MINGW_ANSI_STDIO # compatibility with %zu formatting
endif
DEBUGFLAGS= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef -Wpointer-arith \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls -Wmissing-prototypes -Wc++-compat
CFLAGS += $(DEBUGFLAGS) $(MOREFLAGS)
LDFLAGS += $(MOREFLAGS)
FLAGS = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS)
HAVE_COLORNEVER = $(shell echo a | grep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
GREP_OPTIONS ?=
ifeq ($HAVE_COLORNEVER, 1)
GREP_OPTIONS += --color=never
endif
GREP = grep $(GREP_OPTIONS)
SED_ERE_OPT ?= -E
ZSTD_COMMON_FILES := $(sort $(wildcard $(LIBZSTD)/common/*.c))
ZSTD_COMPRESS_FILES := $(sort $(wildcard $(LIBZSTD)/compress/*.c))
ZSTD_DECOMPRESS_FILES := $(sort $(wildcard $(LIBZSTD)/decompress/*.c))
ZSTD_DICTBUILDER_FILES := $(sort $(wildcard $(LIBZSTD)/dictBuilder/*.c))
ZSTD_DEPRECATED_FILES := $(sort $(wildcard $(LIBZSTD)/deprecated/*.c))
ZSTD_LEGACY_FILES :=
ZSTD_DECOMPRESS_AMD64_ASM_FILES := $(sort $(wildcard $(LIBZSTD)/decompress/*_amd64.S))
ifneq ($(ZSTD_NO_ASM), 0)
CPPFLAGS += -DZSTD_DISABLE_ASM
else
# Unconditionally add the ASM files they are disabled by
# macros in the .S file.
ZSTD_DECOMPRESS_FILES += $(ZSTD_DECOMPRESS_AMD64_ASM_FILES)
endif
ifneq ($(HUF_FORCE_DECOMPRESS_X1), 0)
CFLAGS += -DHUF_FORCE_DECOMPRESS_X1
endif
ifneq ($(HUF_FORCE_DECOMPRESS_X2), 0)
CFLAGS += -DHUF_FORCE_DECOMPRESS_X2
endif
ifneq ($(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT), 0)
CFLAGS += -DZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT
endif
ifneq ($(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG), 0)
CFLAGS += -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG
endif
ifneq ($(ZSTD_NO_INLINE), 0)
CFLAGS += -DZSTD_NO_INLINE
endif
ifneq ($(ZSTD_STRIP_ERROR_STRINGS), 0)
CFLAGS += -DZSTD_STRIP_ERROR_STRINGS
endif
ifneq ($(ZSTD_LEGACY_MULTITHREADED_API), 0)
CFLAGS += -DZSTD_LEGACY_MULTITHREADED_API
endif
ifneq ($(ZSTD_LEGACY_SUPPORT), 0)
ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?), 0)
ZSTD_LEGACY_FILES += $(shell ls $(LIBZSTD)/legacy/*.c | $(GREP) 'v0[$(ZSTD_LEGACY_SUPPORT)-7]')
endif
endif
CPPFLAGS += -DZSTD_LEGACY_SUPPORT=$(ZSTD_LEGACY_SUPPORT)
UNAME := $(shell uname)
ifndef BUILD_DIR
ifeq ($(UNAME), Darwin)
ifeq ($(shell md5 < /dev/null > /dev/null; echo $$?), 0)
HASH ?= md5
endif
else ifeq ($(UNAME), FreeBSD)
HASH ?= gmd5sum
else ifeq ($(UNAME), NetBSD)
HASH ?= md5 -n
else ifeq ($(UNAME), OpenBSD)
HASH ?= md5
endif
HASH ?= md5sum
HASH_DIR = conf_$(shell echo $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(ZSTD_FILES) | $(HASH) | cut -f 1 -d " " )
HAVE_HASH :=$(shell echo 1 | $(HASH) > /dev/null && echo 1 || echo 0)
ifeq ($(HAVE_HASH),0)
$(info warning : could not find HASH ($(HASH)), needed to differentiate builds using different flags)
BUILD_DIR := obj/generic_noconf
endif
endif # BUILD_DIR
ZSTD_SUBDIR := $(LIBZSTD)/common $(LIBZSTD)/compress $(LIBZSTD)/decompress $(LIBZSTD)/dictBuilder $(LIBZSTD)/legacy $(LIBZSTD)/deprecated
vpath %.c $(ZSTD_SUBDIR)
vpath %.S $(ZSTD_SUBDIR)
lib/libzstd.pc.in
+1
View File
@@ -12,4 +12,5 @@ Description: fast lossless compression algorithm library
URL: http://www.zstd.net/
Version: @VERSION@
Libs: -L${libdir} -lzstd
Libs.private: @LIBS_PRIVATE@
Cflags: -I${includedir}
lib/modulemap/module.modulemap
+4
View File
@@ -0,0 +1,4 @@
module libzstd [extern_c] {
header "../zstd.h"
export *
}
lib/zdict.h
+4 -4
View File
@@ -46,7 +46,7 @@ extern "C" {
*
* Zstd can use dictionaries to improve compression ratio of small data.
* Traditionally small files don't compress well because there is very little
* repetion in a single sample, since it is small. But, if you are compressing
* repetition in a single sample, since it is small. But, if you are compressing
* many similar files, like a bunch of JSON records that share the same
* structure, you can train a dictionary on ahead of time on some samples of
* these files. Then, zstd can use the dictionary to find repetitions that are
@@ -132,7 +132,7 @@ extern "C" {
*
* # Benchmark levels 1-3 without a dictionary
* zstd -b1e3 -r /path/to/my/files
* # Benchmark levels 1-3 with a dictioanry
* # Benchmark levels 1-3 with a dictionary
* zstd -b1e3 -r /path/to/my/files -D /path/to/my/dictionary
*
* When should I retrain a dictionary?
@@ -237,7 +237,6 @@ typedef struct {
* is presumed that the most profitable content is at the end of the dictionary,
* since that is the cheapest to reference.
*
* `dictContentSize` must be >= ZDICT_CONTENTSIZE_MIN bytes.
* `maxDictSize` must be >= max(dictContentSize, ZSTD_DICTSIZE_MIN).
*
* @return: size of dictionary stored into `dstDictBuffer` (<= `maxDictSize`),
@@ -272,8 +271,9 @@ ZDICTLIB_API const char* ZDICT_getErrorName(size_t errorCode);
* Use them only in association with static linking.
* ==================================================================================== */
#define ZDICT_CONTENTSIZE_MIN 128
#define ZDICT_DICTSIZE_MIN 256
/* Deprecated: Remove in v1.6.0 */
#define ZDICT_CONTENTSIZE_MIN 128
/*! ZDICT_cover_params_t:
* k and d are the only required parameters.
lib/zstd.h
+179 -136
View File
@@ -20,19 +20,21 @@ extern "C" {
/* ===== ZSTDLIB_API : control library symbols visibility ===== */
#ifndef ZSTDLIB_VISIBILITY
# if defined(__GNUC__) && (__GNUC__ >= 4)
# define ZSTDLIB_VISIBILITY __attribute__ ((visibility ("default")))
#ifndef ZSTDLIB_VISIBLE
# if defined(__GNUC__) && (__GNUC__ >= 4) && !defined(__MINGW32__)
# define ZSTDLIB_VISIBLE __attribute__ ((visibility ("default")))
# define ZSTDLIB_HIDDEN __attribute__ ((visibility ("hidden")))
# else
# define ZSTDLIB_VISIBILITY
# define ZSTDLIB_VISIBLE
# define ZSTDLIB_HIDDEN
# endif
#endif
#if defined(ZSTD_DLL_EXPORT) && (ZSTD_DLL_EXPORT==1)
# define ZSTDLIB_API __declspec(dllexport) ZSTDLIB_VISIBILITY
# define ZSTDLIB_API __declspec(dllexport) ZSTDLIB_VISIBLE
#elif defined(ZSTD_DLL_IMPORT) && (ZSTD_DLL_IMPORT==1)
# define ZSTDLIB_API __declspec(dllimport) ZSTDLIB_VISIBILITY /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/
# define ZSTDLIB_API __declspec(dllimport) ZSTDLIB_VISIBLE /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/
#else
# define ZSTDLIB_API ZSTDLIB_VISIBILITY
# define ZSTDLIB_API ZSTDLIB_VISIBLE
#endif
@@ -72,7 +74,7 @@ extern "C" {
/*------ Version ------*/
#define ZSTD_VERSION_MAJOR 1
#define ZSTD_VERSION_MINOR 5
#define ZSTD_VERSION_RELEASE 0
#define ZSTD_VERSION_RELEASE 1
#define ZSTD_VERSION_NUMBER (ZSTD_VERSION_MAJOR *100*100 + ZSTD_VERSION_MINOR *100 + ZSTD_VERSION_RELEASE)
/*! ZSTD_versionNumber() :
@@ -247,7 +249,7 @@ ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* dctx,
*
* It's possible to reset all parameters to "default" using ZSTD_CCtx_reset().
*
* This API supercedes all other "advanced" API entry points in the experimental section.
* This API supersedes all other "advanced" API entry points in the experimental section.
* In the future, we expect to remove from experimental API entry points which are redundant with this API.
*/
@@ -417,7 +419,7 @@ typedef enum {
* ZSTD_c_stableOutBuffer
* ZSTD_c_blockDelimiters
* ZSTD_c_validateSequences
* ZSTD_c_splitBlocks
* ZSTD_c_useBlockSplitter
* ZSTD_c_useRowMatchFinder
* Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
* note : never ever use experimentalParam? names directly;
@@ -932,7 +934,7 @@ ZSTDLIB_API unsigned ZSTD_getDictID_fromFrame(const void* src, size_t srcSize);
* Advanced dictionary and prefix API (Requires v1.4.0+)
*
* This API allows dictionaries to be used with ZSTD_compress2(),
* ZSTD_compressStream2(), and ZSTD_decompress(). Dictionaries are sticky, and
* ZSTD_compressStream2(), and ZSTD_decompressDCtx(). Dictionaries are sticky, and
* only reset with the context is reset with ZSTD_reset_parameters or
* ZSTD_reset_session_and_parameters. Prefixes are single-use.
******************************************************************************/
@@ -1073,25 +1075,36 @@ ZSTDLIB_API size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
#if defined(ZSTD_STATIC_LINKING_ONLY) && !defined(ZSTD_H_ZSTD_STATIC_LINKING_ONLY)
#define ZSTD_H_ZSTD_STATIC_LINKING_ONLY
/* This can be overridden externally to hide static symbols. */
#ifndef ZSTDLIB_STATIC_API
# if defined(ZSTD_DLL_EXPORT) && (ZSTD_DLL_EXPORT==1)
# define ZSTDLIB_STATIC_API __declspec(dllexport) ZSTDLIB_VISIBLE
# elif defined(ZSTD_DLL_IMPORT) && (ZSTD_DLL_IMPORT==1)
# define ZSTDLIB_STATIC_API __declspec(dllimport) ZSTDLIB_VISIBLE
# else
# define ZSTDLIB_STATIC_API ZSTDLIB_VISIBLE
# endif
#endif
/* Deprecation warnings :
* Should these warnings be a problem, it is generally possible to disable them,
* typically with -Wno-deprecated-declarations for gcc or _CRT_SECURE_NO_WARNINGS in Visual.
* Otherwise, it's also possible to define ZSTD_DISABLE_DEPRECATE_WARNINGS.
*/
#ifdef ZSTD_DISABLE_DEPRECATE_WARNINGS
# define ZSTD_DEPRECATED(message) ZSTDLIB_API /* disable deprecation warnings */
# define ZSTD_DEPRECATED(message) ZSTDLIB_STATIC_API /* disable deprecation warnings */
#else
# if defined (__cplusplus) && (__cplusplus >= 201402) /* C++14 or greater */
# define ZSTD_DEPRECATED(message) [[deprecated(message)]] ZSTDLIB_API
# define ZSTD_DEPRECATED(message) [[deprecated(message)]] ZSTDLIB_STATIC_API
# elif (defined(GNUC) && (GNUC > 4 || (GNUC == 4 && GNUC_MINOR >= 5))) || defined(__clang__)
# define ZSTD_DEPRECATED(message) ZSTDLIB_API __attribute__((deprecated(message)))
# define ZSTD_DEPRECATED(message) ZSTDLIB_STATIC_API __attribute__((deprecated(message)))
# elif defined(__GNUC__) && (__GNUC__ >= 3)
# define ZSTD_DEPRECATED(message) ZSTDLIB_API __attribute__((deprecated))
# define ZSTD_DEPRECATED(message) ZSTDLIB_STATIC_API __attribute__((deprecated))
# elif defined(_MSC_VER)
# define ZSTD_DEPRECATED(message) ZSTDLIB_API __declspec(deprecated(message))
# define ZSTD_DEPRECATED(message) ZSTDLIB_STATIC_API __declspec(deprecated(message))
# else
# pragma message("WARNING: You need to implement ZSTD_DEPRECATED for this compiler")
# define ZSTD_DEPRECATED(message) ZSTDLIB_API
# define ZSTD_DEPRECATED(message) ZSTDLIB_STATIC_API
# endif
#endif /* ZSTD_DISABLE_DEPRECATE_WARNINGS */
@@ -1157,9 +1170,6 @@ ZSTDLIB_API size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
#define ZSTD_SRCSIZEHINT_MIN 0
#define ZSTD_SRCSIZEHINT_MAX INT_MAX
/* internal */
#define ZSTD_HASHLOG3_MAX 17
/* --- Advanced types --- */
@@ -1302,10 +1312,14 @@ typedef enum {
} ZSTD_literalCompressionMode_e;
typedef enum {
ZSTD_urm_auto = 0, /* Automatically determine whether or not we use row matchfinder */
ZSTD_urm_disableRowMatchFinder = 1, /* Never use row matchfinder */
ZSTD_urm_enableRowMatchFinder = 2 /* Always use row matchfinder when applicable */
} ZSTD_useRowMatchFinderMode_e;
/* Note: This enum controls features which are conditionally beneficial. Zstd typically will make a final
* decision on whether or not to enable the feature (ZSTD_ps_auto), but setting the switch to ZSTD_ps_enable
* or ZSTD_ps_disable allow for a force enable/disable the feature.
*/
ZSTD_ps_auto = 0, /* Let the library automatically determine whether the feature shall be enabled */
ZSTD_ps_enable = 1, /* Force-enable the feature */
ZSTD_ps_disable = 2 /* Do not use the feature */
} ZSTD_paramSwitch_e;
/***************************************
* Frame size functions
@@ -1332,7 +1346,7 @@ typedef enum {
* note 5 : ZSTD_findDecompressedSize handles multiple frames, and so it must traverse the input to
* read each contained frame header. This is fast as most of the data is skipped,
* however it does mean that all frame data must be present and valid. */
ZSTDLIB_API unsigned long long ZSTD_findDecompressedSize(const void* src, size_t srcSize);
ZSTDLIB_STATIC_API unsigned long long ZSTD_findDecompressedSize(const void* src, size_t srcSize);
/*! ZSTD_decompressBound() :
* `src` should point to the start of a series of ZSTD encoded and/or skippable frames
@@ -1347,13 +1361,13 @@ ZSTDLIB_API unsigned long long ZSTD_findDecompressedSize(const void* src, size_t
* note 3 : when the decompressed size field isn't available, the upper-bound for that frame is calculated by:
* upper-bound = # blocks * min(128 KB, Window_Size)
*/
ZSTDLIB_API unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize);
ZSTDLIB_STATIC_API unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize);
/*! ZSTD_frameHeaderSize() :
* srcSize must be >= ZSTD_FRAMEHEADERSIZE_PREFIX.
* @return : size of the Frame Header,
* or an error code (if srcSize is too small) */
ZSTDLIB_API size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize);
typedef enum {
ZSTD_sf_noBlockDelimiters = 0, /* Representation of ZSTD_Sequence has no block delimiters, sequences only */
@@ -1376,7 +1390,7 @@ typedef enum {
* @return : number of sequences generated
*/
ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
ZSTDLIB_STATIC_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
size_t outSeqsSize, const void* src, size_t srcSize);
/*! ZSTD_mergeBlockDelimiters() :
@@ -1390,7 +1404,7 @@ ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
* setting of ZSTD_c_blockDelimiters as ZSTD_sf_noBlockDelimiters
* @return : number of sequences left after merging
*/
ZSTDLIB_API size_t ZSTD_mergeBlockDelimiters(ZSTD_Sequence* sequences, size_t seqsSize);
ZSTDLIB_STATIC_API size_t ZSTD_mergeBlockDelimiters(ZSTD_Sequence* sequences, size_t seqsSize);
/*! ZSTD_compressSequences() :
* Compress an array of ZSTD_Sequence, generated from the original source buffer, into dst.
@@ -1420,7 +1434,7 @@ ZSTDLIB_API size_t ZSTD_mergeBlockDelimiters(ZSTD_Sequence* sequences, size_t se
* and cannot emit an RLE block that disagrees with the repcode history
* @return : final compressed size or a ZSTD error.
*/
ZSTDLIB_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* dst, size_t dstSize,
ZSTDLIB_STATIC_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* dst, size_t dstSize,
const ZSTD_Sequence* inSeqs, size_t inSeqsSize,
const void* src, size_t srcSize);
@@ -1438,9 +1452,29 @@ ZSTDLIB_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* dst, size
*
* @return : number of bytes written or a ZSTD error.
*/
ZSTDLIB_API size_t ZSTD_writeSkippableFrame(void* dst, size_t dstCapacity,
ZSTDLIB_STATIC_API size_t ZSTD_writeSkippableFrame(void* dst, size_t dstCapacity,
const void* src, size_t srcSize, unsigned magicVariant);
/*! ZSTD_readSkippableFrame() :
* Retrieves a zstd skippable frame containing data given by src, and writes it to dst buffer.
*
* The parameter magicVariant will receive the magicVariant that was supplied when the frame was written,
* i.e. magicNumber - ZSTD_MAGIC_SKIPPABLE_START. This can be NULL if the caller is not interested
* in the magicVariant.
*
* Returns an error if destination buffer is not large enough, or if the frame is not skippable.
*
* @return : number of bytes written or a ZSTD error.
*/
ZSTDLIB_API size_t ZSTD_readSkippableFrame(void* dst, size_t dstCapacity, unsigned* magicVariant,
const void* src, size_t srcSize);
/*! ZSTD_isSkippableFrame() :
* Tells if the content of `buffer` starts with a valid Frame Identifier for a skippable frame.
*/
ZSTDLIB_API unsigned ZSTD_isSkippableFrame(const void* buffer, size_t size);
/***************************************
* Memory management
@@ -1469,10 +1503,10 @@ ZSTDLIB_API size_t ZSTD_writeSkippableFrame(void* dst, size_t dstCapacity,
* Note 2 : only single-threaded compression is supported.
* ZSTD_estimateCCtxSize_usingCCtxParams() will return an error code if ZSTD_c_nbWorkers is >= 1.
*/
ZSTDLIB_API size_t ZSTD_estimateCCtxSize(int compressionLevel);
ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams);
ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params);
ZSTDLIB_API size_t ZSTD_estimateDCtxSize(void);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCCtxSize(int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params);
ZSTDLIB_STATIC_API size_t ZSTD_estimateDCtxSize(void);
/*! ZSTD_estimateCStreamSize() :
* ZSTD_estimateCStreamSize() will provide a budget large enough for any compression level up to selected one.
@@ -1487,20 +1521,20 @@ ZSTDLIB_API size_t ZSTD_estimateDCtxSize(void);
* Note : if streaming is init with function ZSTD_init?Stream_usingDict(),
* an internal ?Dict will be created, which additional size is not estimated here.
* In this case, get total size by adding ZSTD_estimate?DictSize */
ZSTDLIB_API size_t ZSTD_estimateCStreamSize(int compressionLevel);
ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCParams(ZSTD_compressionParameters cParams);
ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCCtxParams(const ZSTD_CCtx_params* params);
ZSTDLIB_API size_t ZSTD_estimateDStreamSize(size_t windowSize);
ZSTDLIB_API size_t ZSTD_estimateDStreamSize_fromFrame(const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCStreamSize(int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCStreamSize_usingCParams(ZSTD_compressionParameters cParams);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCStreamSize_usingCCtxParams(const ZSTD_CCtx_params* params);
ZSTDLIB_STATIC_API size_t ZSTD_estimateDStreamSize(size_t windowSize);
ZSTDLIB_STATIC_API size_t ZSTD_estimateDStreamSize_fromFrame(const void* src, size_t srcSize);
/*! ZSTD_estimate?DictSize() :
* ZSTD_estimateCDictSize() will bet that src size is relatively "small", and content is copied, like ZSTD_createCDict().
* ZSTD_estimateCDictSize_advanced() makes it possible to control compression parameters precisely, like ZSTD_createCDict_advanced().
* Note : dictionaries created by reference (`ZSTD_dlm_byRef`) are logically smaller.
*/
ZSTDLIB_API size_t ZSTD_estimateCDictSize(size_t dictSize, int compressionLevel);
ZSTDLIB_API size_t ZSTD_estimateCDictSize_advanced(size_t dictSize, ZSTD_compressionParameters cParams, ZSTD_dictLoadMethod_e dictLoadMethod);
ZSTDLIB_API size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCDictSize(size_t dictSize, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_estimateCDictSize_advanced(size_t dictSize, ZSTD_compressionParameters cParams, ZSTD_dictLoadMethod_e dictLoadMethod);
ZSTDLIB_STATIC_API size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod);
/*! ZSTD_initStatic*() :
* Initialize an object using a pre-allocated fixed-size buffer.
@@ -1523,20 +1557,20 @@ ZSTDLIB_API size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e
* Limitation 2 : static cctx currently not compatible with multi-threading.
* Limitation 3 : static dctx is incompatible with legacy support.
*/
ZSTDLIB_API ZSTD_CCtx* ZSTD_initStaticCCtx(void* workspace, size_t workspaceSize);
ZSTDLIB_API ZSTD_CStream* ZSTD_initStaticCStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticCCtx() */
ZSTDLIB_STATIC_API ZSTD_CCtx* ZSTD_initStaticCCtx(void* workspace, size_t workspaceSize);
ZSTDLIB_STATIC_API ZSTD_CStream* ZSTD_initStaticCStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticCCtx() */
ZSTDLIB_API ZSTD_DCtx* ZSTD_initStaticDCtx(void* workspace, size_t workspaceSize);
ZSTDLIB_API ZSTD_DStream* ZSTD_initStaticDStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticDCtx() */
ZSTDLIB_STATIC_API ZSTD_DCtx* ZSTD_initStaticDCtx(void* workspace, size_t workspaceSize);
ZSTDLIB_STATIC_API ZSTD_DStream* ZSTD_initStaticDStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticDCtx() */
ZSTDLIB_API const ZSTD_CDict* ZSTD_initStaticCDict(
ZSTDLIB_STATIC_API const ZSTD_CDict* ZSTD_initStaticCDict(
void* workspace, size_t workspaceSize,
const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_dictContentType_e dictContentType,
ZSTD_compressionParameters cParams);
ZSTDLIB_API const ZSTD_DDict* ZSTD_initStaticDDict(
ZSTDLIB_STATIC_API const ZSTD_DDict* ZSTD_initStaticDDict(
void* workspace, size_t workspaceSize,
const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
@@ -1557,44 +1591,44 @@ __attribute__((__unused__))
#endif
ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL }; /**< this constant defers to stdlib's functions */
ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem);
ZSTDLIB_API ZSTD_CStream* ZSTD_createCStream_advanced(ZSTD_customMem customMem);
ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem);
ZSTDLIB_API ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem);
ZSTDLIB_STATIC_API ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem);
ZSTDLIB_STATIC_API ZSTD_CStream* ZSTD_createCStream_advanced(ZSTD_customMem customMem);
ZSTDLIB_STATIC_API ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem);
ZSTDLIB_STATIC_API ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem);
ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize,
ZSTDLIB_STATIC_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_dictContentType_e dictContentType,
ZSTD_compressionParameters cParams,
ZSTD_customMem customMem);
/* ! Thread pool :
* These prototypes make it possible to share a thread pool among multiple compression contexts.
* This can limit resources for applications with multiple threads where each one uses
* a threaded compression mode (via ZSTD_c_nbWorkers parameter).
* ZSTD_createThreadPool creates a new thread pool with a given number of threads.
* Note that the lifetime of such pool must exist while being used.
* ZSTD_CCtx_refThreadPool assigns a thread pool to a context (use NULL argument value
* to use an internal thread pool).
* ZSTD_freeThreadPool frees a thread pool, accepts NULL pointer.
/*! Thread pool :
* These prototypes make it possible to share a thread pool among multiple compression contexts.
* This can limit resources for applications with multiple threads where each one uses
* a threaded compression mode (via ZSTD_c_nbWorkers parameter).
* ZSTD_createThreadPool creates a new thread pool with a given number of threads.
* Note that the lifetime of such pool must exist while being used.
* ZSTD_CCtx_refThreadPool assigns a thread pool to a context (use NULL argument value
* to use an internal thread pool).
* ZSTD_freeThreadPool frees a thread pool, accepts NULL pointer.
*/
typedef struct POOL_ctx_s ZSTD_threadPool;
ZSTDLIB_API ZSTD_threadPool* ZSTD_createThreadPool(size_t numThreads);
ZSTDLIB_API void ZSTD_freeThreadPool (ZSTD_threadPool* pool); /* accept NULL pointer */
ZSTDLIB_API size_t ZSTD_CCtx_refThreadPool(ZSTD_CCtx* cctx, ZSTD_threadPool* pool);
ZSTDLIB_STATIC_API ZSTD_threadPool* ZSTD_createThreadPool(size_t numThreads);
ZSTDLIB_STATIC_API void ZSTD_freeThreadPool (ZSTD_threadPool* pool); /* accept NULL pointer */
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_refThreadPool(ZSTD_CCtx* cctx, ZSTD_threadPool* pool);
/*
* This API is temporary and is expected to change or disappear in the future!
*/
ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced2(
ZSTDLIB_STATIC_API ZSTD_CDict* ZSTD_createCDict_advanced2(
const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_dictContentType_e dictContentType,
const ZSTD_CCtx_params* cctxParams,
ZSTD_customMem customMem);
ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_advanced(
ZSTDLIB_STATIC_API ZSTD_DDict* ZSTD_createDDict_advanced(
const void* dict, size_t dictSize,
ZSTD_dictLoadMethod_e dictLoadMethod,
ZSTD_dictContentType_e dictContentType,
@@ -1611,22 +1645,22 @@ ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_advanced(
* As a consequence, `dictBuffer` **must** outlive CDict,
* and its content must remain unmodified throughout the lifetime of CDict.
* note: equivalent to ZSTD_createCDict_advanced(), with dictLoadMethod==ZSTD_dlm_byRef */
ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_byReference(const void* dictBuffer, size_t dictSize, int compressionLevel);
ZSTDLIB_STATIC_API ZSTD_CDict* ZSTD_createCDict_byReference(const void* dictBuffer, size_t dictSize, int compressionLevel);
/*! ZSTD_getCParams() :
* @return ZSTD_compressionParameters structure for a selected compression level and estimated srcSize.
* `estimatedSrcSize` value is optional, select 0 if not known */
ZSTDLIB_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
ZSTDLIB_STATIC_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
/*! ZSTD_getParams() :
* same as ZSTD_getCParams(), but @return a full `ZSTD_parameters` object instead of sub-component `ZSTD_compressionParameters`.
* All fields of `ZSTD_frameParameters` are set to default : contentSize=1, checksum=0, noDictID=0 */
ZSTDLIB_API ZSTD_parameters ZSTD_getParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
ZSTDLIB_STATIC_API ZSTD_parameters ZSTD_getParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
/*! ZSTD_checkCParams() :
* Ensure param values remain within authorized range.
* @return 0 on success, or an error code (can be checked with ZSTD_isError()) */
ZSTDLIB_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params);
ZSTDLIB_STATIC_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params);
/*! ZSTD_adjustCParams() :
* optimize params for a given `srcSize` and `dictSize`.
@@ -1634,7 +1668,7 @@ ZSTDLIB_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params);
* `dictSize` must be `0` when there is no dictionary.
* cPar can be invalid : all parameters will be clamped within valid range in the @return struct.
* This function never fails (wide contract) */
ZSTDLIB_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, unsigned long long srcSize, size_t dictSize);
ZSTDLIB_STATIC_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, unsigned long long srcSize, size_t dictSize);
/*! ZSTD_compress_advanced() :
* Note : this function is now DEPRECATED.
@@ -1662,18 +1696,18 @@ size_t ZSTD_compress_usingCDict_advanced(ZSTD_CCtx* cctx,
/*! ZSTD_CCtx_loadDictionary_byReference() :
* Same as ZSTD_CCtx_loadDictionary(), but dictionary content is referenced, instead of being copied into CCtx.
* It saves some memory, but also requires that `dict` outlives its usage within `cctx` */
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_byReference(ZSTD_CCtx* cctx, const void* dict, size_t dictSize);
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_loadDictionary_byReference(ZSTD_CCtx* cctx, const void* dict, size_t dictSize);
/*! ZSTD_CCtx_loadDictionary_advanced() :
* Same as ZSTD_CCtx_loadDictionary(), but gives finer control over
* how to load the dictionary (by copy ? by reference ?)
* and how to interpret it (automatic ? force raw mode ? full mode only ?) */
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_loadDictionary_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
/*! ZSTD_CCtx_refPrefix_advanced() :
* Same as ZSTD_CCtx_refPrefix(), but gives finer control over
* how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */
ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
/* === experimental parameters === */
/* these parameters can be used with ZSTD_setParameter()
@@ -1712,9 +1746,15 @@ ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* pre
* See the comments on that enum for an explanation of the feature. */
#define ZSTD_c_forceAttachDict ZSTD_c_experimentalParam4
/* Controls how the literals are compressed (default is auto).
* The value must be of type ZSTD_literalCompressionMode_e.
* See ZSTD_literalCompressionMode_e enum definition for details.
/* Controlled with ZSTD_paramSwitch_e enum.
* Default is ZSTD_ps_auto.
* Set to ZSTD_ps_disable to never compress literals.
* Set to ZSTD_ps_enable to always compress literals. (Note: uncompressed literals
* may still be emitted if huffman is not beneficial to use.)
*
* By default, in ZSTD_ps_auto, the library will decide at runtime whether to use
* literals compression based on the compression parameters - specifically,
* negative compression levels do not use literal compression.
*/
#define ZSTD_c_literalCompressionMode ZSTD_c_experimentalParam5
@@ -1777,7 +1817,7 @@ ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* pre
*
* Note that this means that the CDict tables can no longer be copied into the
* CCtx, so the dict attachment mode ZSTD_dictForceCopy will no longer be
* useable. The dictionary can only be attached or reloaded.
* usable. The dictionary can only be attached or reloaded.
*
* In general, you should expect compression to be faster--sometimes very much
* so--and CDict creation to be slightly slower. Eventually, we will probably
@@ -1866,23 +1906,26 @@ ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* pre
*/
#define ZSTD_c_validateSequences ZSTD_c_experimentalParam12
/* ZSTD_c_splitBlocks
* Default is 0 == disabled. Set to 1 to enable block splitting.
/* ZSTD_c_useBlockSplitter
* Controlled with ZSTD_paramSwitch_e enum.
* Default is ZSTD_ps_auto.
* Set to ZSTD_ps_disable to never use block splitter.
* Set to ZSTD_ps_enable to always use block splitter.
*
* Will attempt to split blocks in order to improve compression ratio at the cost of speed.
* By default, in ZSTD_ps_auto, the library will decide at runtime whether to use
* block splitting based on the compression parameters.
*/
#define ZSTD_c_splitBlocks ZSTD_c_experimentalParam13
#define ZSTD_c_useBlockSplitter ZSTD_c_experimentalParam13
/* ZSTD_c_useRowMatchFinder
* Default is ZSTD_urm_auto.
* Controlled with ZSTD_useRowMatchFinderMode_e enum.
* Controlled with ZSTD_paramSwitch_e enum.
* Default is ZSTD_ps_auto.
* Set to ZSTD_ps_disable to never use row-based matchfinder.
* Set to ZSTD_ps_enable to force usage of row-based matchfinder.
*
* By default, in ZSTD_urm_auto, when finalizing the compression parameters, the library
* will decide at runtime whether to use the row-based matchfinder based on support for SIMD
* instructions as well as the windowLog.
*
* Set to ZSTD_urm_disableRowMatchFinder to never use row-based matchfinder.
* Set to ZSTD_urm_enableRowMatchFinder to force usage of row-based matchfinder.
* By default, in ZSTD_ps_auto, the library will decide at runtime whether to use
* the row-based matchfinder based on support for SIMD instructions and the window log.
* Note that this only pertains to compression strategies: greedy, lazy, and lazy2
*/
#define ZSTD_c_useRowMatchFinder ZSTD_c_experimentalParam14
@@ -1911,7 +1954,7 @@ ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* pre
* and store it into int* value.
* @return : 0, or an error code (which can be tested with ZSTD_isError()).
*/
ZSTDLIB_API size_t ZSTD_CCtx_getParameter(const ZSTD_CCtx* cctx, ZSTD_cParameter param, int* value);
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_getParameter(const ZSTD_CCtx* cctx, ZSTD_cParameter param, int* value);
/*! ZSTD_CCtx_params :
@@ -1931,25 +1974,25 @@ ZSTDLIB_API size_t ZSTD_CCtx_getParameter(const ZSTD_CCtx* cctx, ZSTD_cParameter
* This can be used with ZSTD_estimateCCtxSize_advanced_usingCCtxParams()
* for static allocation of CCtx for single-threaded compression.
*/
ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void);
ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params); /* accept NULL pointer */
ZSTDLIB_STATIC_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void);
ZSTDLIB_STATIC_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params); /* accept NULL pointer */
/*! ZSTD_CCtxParams_reset() :
* Reset params to default values.
*/
ZSTDLIB_API size_t ZSTD_CCtxParams_reset(ZSTD_CCtx_params* params);
ZSTDLIB_STATIC_API size_t ZSTD_CCtxParams_reset(ZSTD_CCtx_params* params);
/*! ZSTD_CCtxParams_init() :
* Initializes the compression parameters of cctxParams according to
* compression level. All other parameters are reset to their default values.
*/
ZSTDLIB_API size_t ZSTD_CCtxParams_init(ZSTD_CCtx_params* cctxParams, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_CCtxParams_init(ZSTD_CCtx_params* cctxParams, int compressionLevel);
/*! ZSTD_CCtxParams_init_advanced() :
* Initializes the compression and frame parameters of cctxParams according to
* params. All other parameters are reset to their default values.
*/
ZSTDLIB_API size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params);
ZSTDLIB_STATIC_API size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params);
/*! ZSTD_CCtxParams_setParameter() : Requires v1.4.0+
* Similar to ZSTD_CCtx_setParameter.
@@ -1959,14 +2002,14 @@ ZSTDLIB_API size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, Z
* @result : a code representing success or failure (which can be tested with
* ZSTD_isError()).
*/
ZSTDLIB_API size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* params, ZSTD_cParameter param, int value);
ZSTDLIB_STATIC_API size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* params, ZSTD_cParameter param, int value);
/*! ZSTD_CCtxParams_getParameter() :
* Similar to ZSTD_CCtx_getParameter.
* Get the requested value of one compression parameter, selected by enum ZSTD_cParameter.
* @result : 0, or an error code (which can be tested with ZSTD_isError()).
*/
ZSTDLIB_API size_t ZSTD_CCtxParams_getParameter(const ZSTD_CCtx_params* params, ZSTD_cParameter param, int* value);
ZSTDLIB_STATIC_API size_t ZSTD_CCtxParams_getParameter(const ZSTD_CCtx_params* params, ZSTD_cParameter param, int* value);
/*! ZSTD_CCtx_setParametersUsingCCtxParams() :
* Apply a set of ZSTD_CCtx_params to the compression context.
@@ -1975,7 +2018,7 @@ ZSTDLIB_API size_t ZSTD_CCtxParams_getParameter(const ZSTD_CCtx_params* params,
* if nbWorkers>=1, new parameters will be picked up at next job,
* with a few restrictions (windowLog, pledgedSrcSize, nbWorkers, jobSize, and overlapLog are not updated).
*/
ZSTDLIB_API size_t ZSTD_CCtx_setParametersUsingCCtxParams(
ZSTDLIB_STATIC_API size_t ZSTD_CCtx_setParametersUsingCCtxParams(
ZSTD_CCtx* cctx, const ZSTD_CCtx_params* params);
/*! ZSTD_compressStream2_simpleArgs() :
@@ -1984,7 +2027,7 @@ ZSTDLIB_API size_t ZSTD_CCtx_setParametersUsingCCtxParams(
* This variant might be helpful for binders from dynamic languages
* which have troubles handling structures containing memory pointers.
*/
ZSTDLIB_API size_t ZSTD_compressStream2_simpleArgs (
ZSTDLIB_STATIC_API size_t ZSTD_compressStream2_simpleArgs (
ZSTD_CCtx* cctx,
void* dst, size_t dstCapacity, size_t* dstPos,
const void* src, size_t srcSize, size_t* srcPos,
@@ -2000,33 +2043,33 @@ ZSTDLIB_API size_t ZSTD_compressStream2_simpleArgs (
* Note : Frame Identifier is 4 bytes. If `size < 4`, @return will always be 0.
* Note 2 : Legacy Frame Identifiers are considered valid only if Legacy Support is enabled.
* Note 3 : Skippable Frame Identifiers are considered valid. */
ZSTDLIB_API unsigned ZSTD_isFrame(const void* buffer, size_t size);
ZSTDLIB_STATIC_API unsigned ZSTD_isFrame(const void* buffer, size_t size);
/*! ZSTD_createDDict_byReference() :
* Create a digested dictionary, ready to start decompression operation without startup delay.
* Dictionary content is referenced, and therefore stays in dictBuffer.
* It is important that dictBuffer outlives DDict,
* it must remain read accessible throughout the lifetime of DDict */
ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_byReference(const void* dictBuffer, size_t dictSize);
ZSTDLIB_STATIC_API ZSTD_DDict* ZSTD_createDDict_byReference(const void* dictBuffer, size_t dictSize);
/*! ZSTD_DCtx_loadDictionary_byReference() :
* Same as ZSTD_DCtx_loadDictionary(),
* but references `dict` content instead of copying it into `dctx`.
* This saves memory if `dict` remains around.,
* However, it's imperative that `dict` remains accessible (and unmodified) while being used, so it must outlive decompression. */
ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_byReference(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
ZSTDLIB_STATIC_API size_t ZSTD_DCtx_loadDictionary_byReference(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
/*! ZSTD_DCtx_loadDictionary_advanced() :
* Same as ZSTD_DCtx_loadDictionary(),
* but gives direct control over
* how to load the dictionary (by copy ? by reference ?)
* and how to interpret it (automatic ? force raw mode ? full mode only ?). */
ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_advanced(ZSTD_DCtx* dctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
ZSTDLIB_STATIC_API size_t ZSTD_DCtx_loadDictionary_advanced(ZSTD_DCtx* dctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
/*! ZSTD_DCtx_refPrefix_advanced() :
* Same as ZSTD_DCtx_refPrefix(), but gives finer control over
* how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */
ZSTDLIB_API size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
ZSTDLIB_STATIC_API size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
/*! ZSTD_DCtx_setMaxWindowSize() :
* Refuses allocating internal buffers for frames requiring a window size larger than provided limit.
@@ -2035,14 +2078,14 @@ ZSTDLIB_API size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* pre
* By default, a decompression context accepts all window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT)
* @return : 0, or an error code (which can be tested using ZSTD_isError()).
*/
ZSTDLIB_API size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowSize);
ZSTDLIB_STATIC_API size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowSize);
/*! ZSTD_DCtx_getParameter() :
* Get the requested decompression parameter value, selected by enum ZSTD_dParameter,
* and store it into int* value.
* @return : 0, or an error code (which can be tested with ZSTD_isError()).
*/
ZSTDLIB_API size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int* value);
ZSTDLIB_STATIC_API size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int* value);
/* ZSTD_d_format
* experimental parameter,
@@ -2131,7 +2174,7 @@ size_t ZSTD_DCtx_setFormat(ZSTD_DCtx* dctx, ZSTD_format_e format);
* This can be helpful for binders from dynamic languages
* which have troubles handling structures containing memory pointers.
*/
ZSTDLIB_API size_t ZSTD_decompressStream_simpleArgs (
ZSTDLIB_STATIC_API size_t ZSTD_decompressStream_simpleArgs (
ZSTD_DCtx* dctx,
void* dst, size_t dstCapacity, size_t* dstPos,
const void* src, size_t srcSize, size_t* srcPos);
@@ -2205,7 +2248,7 @@ size_t ZSTD_initCStream_advanced(ZSTD_CStream* zcs,
* This function is DEPRECATED, and equivalent to:
* ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
* ZSTD_CCtx_refCDict(zcs, cdict);
*
*
* note : cdict will just be referenced, and must outlive compression session
* This prototype will generate compilation warnings.
*/
@@ -2270,7 +2313,7 @@ typedef struct {
* Note : (ingested - consumed) is amount of input data buffered internally, not yet compressed.
* Aggregates progression inside active worker threads.
*/
ZSTDLIB_API ZSTD_frameProgression ZSTD_getFrameProgression(const ZSTD_CCtx* cctx);
ZSTDLIB_STATIC_API ZSTD_frameProgression ZSTD_getFrameProgression(const ZSTD_CCtx* cctx);
/*! ZSTD_toFlushNow() :
* Tell how many bytes are ready to be flushed immediately.
@@ -2285,7 +2328,7 @@ ZSTDLIB_API ZSTD_frameProgression ZSTD_getFrameProgression(const ZSTD_CCtx* cctx
* therefore flush speed is limited by production speed of oldest job
* irrespective of the speed of concurrent (and newer) jobs.
*/
ZSTDLIB_API size_t ZSTD_toFlushNow(ZSTD_CCtx* cctx);
ZSTDLIB_STATIC_API size_t ZSTD_toFlushNow(ZSTD_CCtx* cctx);
/*===== Advanced Streaming decompression functions =====*/
@@ -2299,7 +2342,7 @@ ZSTDLIB_API size_t ZSTD_toFlushNow(ZSTD_CCtx* cctx);
* note: no dictionary will be used if dict == NULL or dictSize < 8
* Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
*/
ZSTDLIB_API size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dict, size_t dictSize);
ZSTDLIB_STATIC_API size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dict, size_t dictSize);
/*!
* This function is deprecated, and is equivalent to:
@@ -2310,7 +2353,7 @@ ZSTDLIB_API size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dic
* note : ddict is referenced, it must outlive decompression session
* Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
*/
ZSTDLIB_API size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* zds, const ZSTD_DDict* ddict);
ZSTDLIB_STATIC_API size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* zds, const ZSTD_DDict* ddict);
/*!
* This function is deprecated, and is equivalent to:
@@ -2320,7 +2363,7 @@ ZSTDLIB_API size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* zds, const ZSTD_DDi
* re-use decompression parameters from previous init; saves dictionary loading
* Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
*/
ZSTDLIB_API size_t ZSTD_resetDStream(ZSTD_DStream* zds);
ZSTDLIB_STATIC_API size_t ZSTD_resetDStream(ZSTD_DStream* zds);
/*********************************************************************
@@ -2362,13 +2405,13 @@ ZSTDLIB_API size_t ZSTD_resetDStream(ZSTD_DStream* zds);
*/
/*===== Buffer-less streaming compression functions =====*/
ZSTDLIB_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
ZSTDLIB_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
ZSTDLIB_API size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); /**< note: fails if cdict==NULL */
ZSTDLIB_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /**< note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
ZSTDLIB_STATIC_API size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); /**< note: fails if cdict==NULL */
ZSTDLIB_STATIC_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /**< note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
/* The ZSTD_compressBegin_advanced() and ZSTD_compressBegin_usingCDict_advanced() are now DEPRECATED and will generate a compiler warning */
ZSTD_DEPRECATED("use advanced API to access custom parameters")
@@ -2465,24 +2508,24 @@ typedef struct {
* @return : 0, `zfhPtr` is correctly filled,
* >0, `srcSize` is too small, value is wanted `srcSize` amount,
* or an error code, which can be tested using ZSTD_isError() */
ZSTDLIB_API size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize); /**< doesn't consume input */
ZSTDLIB_STATIC_API size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize); /**< doesn't consume input */
/*! ZSTD_getFrameHeader_advanced() :
* same as ZSTD_getFrameHeader(),
* with added capability to select a format (like ZSTD_f_zstd1_magicless) */
ZSTDLIB_API size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize, ZSTD_format_e format);
ZSTDLIB_API size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize); /**< when frame content size is not known, pass in frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_STATIC_API size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize, ZSTD_format_e format);
ZSTDLIB_STATIC_API size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize); /**< when frame content size is not known, pass in frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN */
ZSTDLIB_API size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx);
ZSTDLIB_API size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
ZSTDLIB_API size_t ZSTD_decompressBegin_usingDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict);
ZSTDLIB_STATIC_API size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx);
ZSTDLIB_STATIC_API size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
ZSTDLIB_STATIC_API size_t ZSTD_decompressBegin_usingDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict);
ZSTDLIB_API size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx);
ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx);
ZSTDLIB_STATIC_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
/* misc */
ZSTDLIB_API void ZSTD_copyDCtx(ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx);
ZSTDLIB_STATIC_API void ZSTD_copyDCtx(ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx);
typedef enum { ZSTDnit_frameHeader, ZSTDnit_blockHeader, ZSTDnit_block, ZSTDnit_lastBlock, ZSTDnit_checksum, ZSTDnit_skippableFrame } ZSTD_nextInputType_e;
ZSTDLIB_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx);
ZSTDLIB_STATIC_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx);
@@ -2519,10 +2562,10 @@ ZSTDLIB_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx);
*/
/*===== Raw zstd block functions =====*/
ZSTDLIB_API size_t ZSTD_getBlockSize (const ZSTD_CCtx* cctx);
ZSTDLIB_API size_t ZSTD_compressBlock (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_API size_t ZSTD_insertBlock (ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize); /**< insert uncompressed block into `dctx` history. Useful for multi-blocks decompression. */
ZSTDLIB_STATIC_API size_t ZSTD_getBlockSize (const ZSTD_CCtx* cctx);
ZSTDLIB_STATIC_API size_t ZSTD_compressBlock (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
ZSTDLIB_STATIC_API size_t ZSTD_insertBlock (ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize); /**< insert uncompressed block into `dctx` history. Useful for multi-blocks decompression. */
#endif /* ZSTD_H_ZSTD_STATIC_LINKING_ONLY */
programs/Makefile
+35 -109
View File
@@ -9,7 +9,7 @@
# ##########################################################################
# zstd : Command Line Utility, supporting gzip-like arguments
# zstd32 : Same as zstd, but forced to compile in 32-bits mode
# zstd_nolegacy : zstd without support of decompression of legacy versions
# zstd-nolegacy : zstd without support of decompression of legacy versions
# zstd-small : minimal zstd without dictionary builder and benchmark
# zstd-compress : compressor-only version of zstd
# zstd-decompress : decompressor-only version of zstd
@@ -18,31 +18,9 @@
.PHONY: default
default: zstd-release
# silent mode by default; verbose can be triggered by V=1 or VERBOSE=1
$(V)$(VERBOSE).SILENT:
LIBZSTD := ../lib
ZSTDDIR := ../lib
# Version numbers
LIBVER_SRC := $(ZSTDDIR)/zstd.h
LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LIBVER_SRC)`
LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
LIBVER := $(shell echo $(LIBVER_SCRIPT))
ZSTD_VERSION = $(LIBVER)
HAVE_COLORNEVER = $(shell echo a | grep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
GREP_OPTIONS ?=
ifeq ($HAVE_COLORNEVER, 1)
GREP_OPTIONS += --color=never
endif
GREP = grep $(GREP_OPTIONS)
include $(LIBZSTD)/libzstd.mk
ifeq ($(shell $(CC) -v 2>&1 | $(GREP) -c "gcc version "), 1)
ALIGN_LOOP = -falign-loops=32
@@ -50,78 +28,25 @@ else
ALIGN_LOOP =
endif
DEBUGLEVEL ?= 0
CPPFLAGS += -DXXH_NAMESPACE=ZSTD_ -DDEBUGLEVEL=$(DEBUGLEVEL)
ifeq ($(OS),Windows_NT) # MinGW assumed
CPPFLAGS += -D__USE_MINGW_ANSI_STDIO # compatibility with %zu formatting
endif
CFLAGS ?= -O3
DEBUGFLAGS+=-Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef -Wpointer-arith \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls -Wmissing-prototypes -Wc++-compat
CFLAGS += $(DEBUGFLAGS)
CPPFLAGS += $(MOREFLAGS)
LDFLAGS += $(MOREFLAGS)
FLAGS = $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
ZSTDLIB_COMMON := $(ZSTDDIR)/common
ZSTDLIB_COMPRESS := $(ZSTDDIR)/compress
ZSTDLIB_DECOMPRESS := $(ZSTDDIR)/decompress
ZDICT_DIR := $(ZSTDDIR)/dictBuilder
ZSTDLEGACY_DIR := $(ZSTDDIR)/legacy
vpath %.c $(ZSTDLIB_COMMON) $(ZSTDLIB_COMPRESS) $(ZSTDLIB_DECOMPRESS) $(ZDICT_DIR) $(ZSTDLEGACY_DIR)
ZSTDLIB_COMMON_C := $(wildcard $(ZSTDLIB_COMMON)/*.c)
ZSTDLIB_COMPRESS_C := $(wildcard $(ZSTDLIB_COMPRESS)/*.c)
ZSTDLIB_DECOMPRESS_C := $(wildcard $(ZSTDLIB_DECOMPRESS)/*.c)
ZSTDLIB_CORE_SRC := $(ZSTDLIB_DECOMPRESS_C) $(ZSTDLIB_COMMON_C) $(ZSTDLIB_COMPRESS_C)
ZDICT_SRC := $(wildcard $(ZDICT_DIR)/*.c)
ZSTD_LEGACY_SUPPORT ?= 5
ZSTDLEGACY_SRC :=
ifneq ($(ZSTD_LEGACY_SUPPORT), 0)
ifeq ($(shell test $(ZSTD_LEGACY_SUPPORT) -lt 8; echo $$?), 0)
ZSTDLEGACY_SRC += $(shell ls $(ZSTDLEGACY_DIR)/*.c | $(GREP) 'v0[$(ZSTD_LEGACY_SUPPORT)-7]')
endif
endif
ZSTDLIB_COMMON_SRC := $(sort $(ZSTD_COMMON_FILES))
ZSTDLIB_COMPRESS_SRC := $(sort $(ZSTD_COMPRESS_FILES))
ZSTDLIB_DECOMPRESS_SRC := $(sort $(ZSTD_DECOMPRESS_FILES))
ZSTDLIB_CORE_SRC := $(sort $(ZSTD_DECOMPRESS_FILES) $(ZSTD_COMMON_FILES) $(ZSTD_COMPRESS_FILES))
ZDICT_SRC := $(sort $(ZSTD_DICTBUILDER_FILES))
ZSTDLEGACY_SRC := $(sort $(ZSTD_LEGACY_FILES))
# Sort files in alphabetical order for reproducible builds
ZSTDLIB_FULL_SRC = $(sort $(ZSTDLIB_CORE_SRC) $(ZSTDLEGACY_SRC) $(ZDICT_SRC))
ZSTDLIB_LOCAL_SRC = $(notdir $(ZSTDLIB_FULL_SRC))
ZSTDLIB_LOCAL_OBJ := $(ZSTDLIB_LOCAL_SRC:.c=.o)
ZSTDLIB_LOCAL_OBJ0 := $(ZSTDLIB_LOCAL_SRC:.c=.o)
ZSTDLIB_LOCAL_OBJ := $(ZSTDLIB_LOCAL_OBJ0:.S=.o)
ZSTD_CLI_SRC := $(wildcard *.c)
ZSTD_CLI_SRC := $(sort $(wildcard *.c))
ZSTD_CLI_OBJ := $(ZSTD_CLI_SRC:.c=.o)
ZSTD_ALL_SRC = $(ZSTDLIB_LOCAL_SRC) $(ZSTD_CLI_SRC)
ZSTD_ALL_OBJ := $(ZSTD_ALL_SRC:.c=.o)
UNAME := $(shell uname)
ifndef BUILD_DIR
ifeq ($(UNAME), Darwin)
ifeq ($(shell md5 < /dev/null > /dev/null; echo $$?), 0)
HASH ?= md5
endif
else ifeq ($(UNAME), FreeBSD)
HASH ?= gmd5sum
else ifeq ($(UNAME), NetBSD)
HASH ?= md5 -n
else ifeq ($(UNAME), OpenBSD)
HASH ?= md5
endif
HASH ?= md5sum
HAVE_HASH :=$(shell echo 1 | $(HASH) > /dev/null && echo 1 || echo 0)
HASH_DIR = conf_$(shell echo $(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(LDLIBS) $(ZSTD_FILES) | $(HASH) | cut -f 1 -d " ")
ifeq ($(HAVE_HASH),0)
$(info warning : could not find HASH ($(HASH)), needed to differentiate builds using different flags)
BUILD_DIR := obj/generic_noconf
endif
endif # BUILD_DIR
ZSTD_ALL_OBJ0 := $(ZSTD_ALL_SRC:.c=.o)
ZSTD_ALL_OBJ := $(ZSTD_ALL_OBJ0:.S=.o)
# Define *.exe as extension for Windows systems
ifneq (,$(filter Windows%,$(OS)))
@@ -139,9 +64,6 @@ endif
VOID = /dev/null
# Make 4.3 doesn't support '\#' anymore (https://lwn.net/Articles/810071/)
NUM_SYMBOL := \#
# thread detection
NO_THREAD_MSG := ==> no threads, building without multithreading support
HAVE_PTHREAD := $(shell printf '$(NUM_SYMBOL)include <pthread.h>\nint main(void) { return 0; }' > have_pthread.c && $(CC) $(FLAGS) -o have_pthread$(EXT) have_pthread.c -pthread 2> $(VOID) && rm have_pthread$(EXT) && echo 1 || echo 0; rm have_pthread.c)
@@ -156,7 +78,7 @@ endif
# zlib detection
NO_ZLIB_MSG := ==> no zlib, building zstd without .gz support
HAVE_ZLIB := $(shell printf '$(NUM_SYMBOL)include <zlib.h>\nint main(void) { return 0; }' > have_zlib.c && $(CC) $(FLAGS) -o have_zlib$(EXT) have_zlib.c -lz 2> $(VOID) && rm have_zlib$(EXT) && echo 1 || echo 0; rm have_zlib.c)
HAVE_ZLIB ?= $(shell printf '$(NUM_SYMBOL)include <zlib.h>\nint main(void) { return 0; }' > have_zlib.c && $(CC) $(FLAGS) -o have_zlib$(EXT) have_zlib.c -lz 2> $(VOID) && rm have_zlib$(EXT) && echo 1 || echo 0; rm have_zlib.c)
ifeq ($(HAVE_ZLIB), 1)
ZLIB_MSG := ==> building zstd with .gz compression support
ZLIBCPP = -DZSTD_GZCOMPRESS -DZSTD_GZDECOMPRESS
@@ -167,7 +89,7 @@ endif
# lzma detection
NO_LZMA_MSG := ==> no liblzma, building zstd without .xz/.lzma support
HAVE_LZMA := $(shell printf '$(NUM_SYMBOL)include <lzma.h>\nint main(void) { return 0; }' > have_lzma.c && $(CC) $(FLAGS) -o have_lzma$(EXT) have_lzma.c -llzma 2> $(VOID) && rm have_lzma$(EXT) && echo 1 || echo 0; rm have_lzma.c)
HAVE_LZMA ?= $(shell printf '$(NUM_SYMBOL)include <lzma.h>\nint main(void) { return 0; }' > have_lzma.c && $(CC) $(FLAGS) -o have_lzma$(EXT) have_lzma.c -llzma 2> $(VOID) && rm have_lzma$(EXT) && echo 1 || echo 0; rm have_lzma.c)
ifeq ($(HAVE_LZMA), 1)
LZMA_MSG := ==> building zstd with .xz/.lzma compression support
LZMACPP = -DZSTD_LZMACOMPRESS -DZSTD_LZMADECOMPRESS
@@ -178,7 +100,7 @@ endif
# lz4 detection
NO_LZ4_MSG := ==> no liblz4, building zstd without .lz4 support
HAVE_LZ4 := $(shell printf '$(NUM_SYMBOL)include <lz4frame.h>\n$(NUM_SYMBOL)include <lz4.h>\nint main(void) { return 0; }' > have_lz4.c && $(CC) $(FLAGS) -o have_lz4$(EXT) have_lz4.c -llz4 2> $(VOID) && rm have_lz4$(EXT) && echo 1 || echo 0; rm have_lz4.c)
HAVE_LZ4 ?= $(shell printf '$(NUM_SYMBOL)include <lz4frame.h>\n$(NUM_SYMBOL)include <lz4.h>\nint main(void) { return 0; }' > have_lz4.c && $(CC) $(FLAGS) -o have_lz4$(EXT) have_lz4.c -llz4 2> $(VOID) && rm have_lz4$(EXT) && echo 1 || echo 0; rm have_lz4.c)
ifeq ($(HAVE_LZ4), 1)
LZ4_MSG := ==> building zstd with .lz4 compression support
LZ4CPP = -DZSTD_LZ4COMPRESS -DZSTD_LZ4DECOMPRESS
@@ -212,7 +134,7 @@ SET_CACHE_DIRECTORY = \
all: zstd
.PHONY: allVariants
allVariants: zstd zstd-compress zstd-decompress zstd-small zstd-nolegacy zstd-dictBuilder
allVariants: zstd zstd-compress zstd-decompress zstd-small zstd-frugal zstd-nolegacy zstd-dictBuilder
.PHONY: zstd # must always be run
zstd : CPPFLAGS += $(THREAD_CPP) $(ZLIBCPP) $(LZMACPP) $(LZ4CPP)
@@ -242,8 +164,8 @@ $(BUILD_DIR)/zstd : $(ZSTD_OBJ)
$(CC) $(FLAGS) $^ $(LDLIBS) -o $@$(EXT)
ifeq ($(HAVE_HASH),1)
SRCBIN_HASH = $(shell cat $(BUILD_DIR)/zstd 2> $(VOID) | $(HASH) | cut -f 1 -d " ")
DSTBIN_HASH = $(shell cat zstd 2> $(VOID) | $(HASH) | cut -f 1 -d " ")
SRCBIN_HASH = $(shell cat $(BUILD_DIR)/zstd$(EXT) 2> $(VOID) | $(HASH) | cut -f 1 -d " ")
DSTBIN_HASH = $(shell cat zstd$(EXT) 2> $(VOID) | $(HASH) | cut -f 1 -d " ")
BIN_ISDIFFERENT = $(if $(filter $(SRCBIN_HASH),$(DSTBIN_HASH)),0,1)
else
BIN_ISDIFFERENT = 1
@@ -251,7 +173,7 @@ endif
zstd : $(BUILD_DIR)/zstd
if [ $(BIN_ISDIFFERENT) -eq 1 ]; then \
cp -f $< $@; \
cp -f $<$(EXT) $@$(EXT); \
echo zstd build completed; \
else \
echo zstd already built; \
@@ -276,6 +198,7 @@ zstd32 : $(ZSTDLIB_FULL_SRC) $(ZSTD_CLI_SRC)
## zstd-nolegacy: same scope as zstd, with just support of legacy formats removed
zstd-nolegacy : LDFLAGS += $(THREAD_LD) $(ZLIBLD) $(LZMALD) $(LZ4LD) $(DEBUGFLAGS_LD)
zstd-nolegacy : CPPFLAGS += -UZSTD_LEGACY_SUPPORT -DZSTD_LEGACY_SUPPORT=0
zstd-nolegacy : $(ZSTDLIB_CORE_SRC) $(ZDICT_SRC) $(ZSTD_CLI_OBJ)
$(CC) $(FLAGS) $^ -o $@$(EXT) $(LDFLAGS)
@@ -299,7 +222,7 @@ zstd-noxz : zstd
## zstd-dll: zstd executable linked to dynamic library libzstd (must have same version)
.PHONY: zstd-dll
zstd-dll : LDFLAGS+= -L$(ZSTDDIR)
zstd-dll : LDFLAGS+= -L$(LIBZSTD)
zstd-dll : LDLIBS += -lzstd
zstd-dll : ZSTDLIB_LOCAL_SRC = xxhash.c
zstd-dll : zstd
@@ -323,18 +246,17 @@ zstd-pgo :
## zstd-small: minimal target, supporting only zstd compression and decompression. no bench. no legacy. no other format.
zstd-small: CFLAGS = -Os -s
zstd-frugal zstd-small: $(ZSTDLIB_CORE_SRC) zstdcli.c util.c timefn.c fileio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NOTRACE $^ -o $@$(EXT)
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NOTRACE -UZSTD_LEGACY_SUPPORT -DZSTD_LEGACY_SUPPORT=0 $^ -o $@$(EXT)
zstd-decompress: $(ZSTDLIB_COMMON_C) $(ZSTDLIB_DECOMPRESS_C) zstdcli.c util.c timefn.c fileio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NOCOMPRESS -DZSTD_NOTRACE $^ -o $@$(EXT)
zstd-decompress: $(ZSTDLIB_COMMON_SRC) $(ZSTDLIB_DECOMPRESS_SRC) zstdcli.c util.c timefn.c fileio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NOCOMPRESS -DZSTD_NOTRACE -UZSTD_LEGACY_SUPPORT -DZSTD_LEGACY_SUPPORT=0 $^ -o $@$(EXT)
zstd-compress: $(ZSTDLIB_COMMON_C) $(ZSTDLIB_COMPRESS_C) zstdcli.c util.c timefn.c fileio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NODECOMPRESS -DZSTD_NOTRACE $^ -o $@$(EXT)
zstd-compress: $(ZSTDLIB_COMMON_SRC) $(ZSTDLIB_COMPRESS_SRC) zstdcli.c util.c timefn.c fileio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODICT -DZSTD_NODECOMPRESS -DZSTD_NOTRACE -UZSTD_LEGACY_SUPPORT -DZSTD_LEGACY_SUPPORT=0 $^ -o $@$(EXT)
## zstd-dictBuilder: executable supporting dictionary creation and compression (only)
zstd-dictBuilder: CPPFLAGS += -DZSTD_NOBENCH -DZSTD_NODECOMPRESS -DZSTD_NOTRACE
zstd-dictBuilder: $(ZSTDLIB_COMMON_C) $(ZSTDLIB_COMPRESS_C) $(ZDICT_SRC) zstdcli.c util.c timefn.c fileio.c dibio.c
$(CC) $(FLAGS) $^ -o $@$(EXT)
zstd-dictBuilder: $(ZSTDLIB_COMMON_SRC) $(ZSTDLIB_COMPRESS_SRC) $(ZDICT_SRC) zstdcli.c util.c timefn.c fileio.c dibio.c
$(CC) $(FLAGS) -DZSTD_NOBENCH -DZSTD_NODECOMPRESS -DZSTD_NOTRACE $^ -o $@$(EXT)
zstdmt: zstd
ln -sf zstd zstdmt
@@ -398,6 +320,10 @@ $(BUILD_DIR)/%.o : %.c $(BUILD_DIR)/%.d | $(BUILD_DIR)
@echo CC $@
$(COMPILE.c) $(DEPFLAGS) $(BUILD_DIR)/$*.d $(OUTPUT_OPTION) $<
$(BUILD_DIR)/%.o : %.S | $(BUILD_DIR)
@echo AS $@
$(COMPILE.c) $(OUTPUT_OPTION) $<
MKDIR ?= mkdir
$(BUILD_DIR): ; $(MKDIR) -p $@
@@ -411,7 +337,7 @@ include $(wildcard $(DEPFILES))
#-----------------------------------------------------------------------------
# make install is validated only for Linux, macOS, BSD, Hurd and Solaris targets
#-----------------------------------------------------------------------------
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku))
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku AIX))
HAVE_COLORNEVER = $(shell echo a | egrep --color=never a > /dev/null 2> /dev/null && echo 1 || echo 0)
EGREP_OPTIONS ?=
programs/README.md
+2 -1
View File
@@ -156,7 +156,7 @@ Arguments :
Advanced arguments :
-V : display Version number and exit
-c : force write to standard output, even if it is the console
-c : write to standard output (even if it is the console)
-v : verbose mode; specify multiple times to increase verbosity
-q : suppress warnings; specify twice to suppress errors too
--no-progress : do not display the progress counter
@@ -172,6 +172,7 @@ Advanced compression arguments :
--long[=#]: enable long distance matching with given window log (default: 27)
--fast[=#]: switch to very fast compression levels (default: 1)
--adapt : dynamically adapt compression level to I/O conditions
--patch-from=FILE : specify the file to be used as a reference point for zstd's diff engine
-T# : spawns # compression threads (default: 1, 0==# cores)
-B# : select size of each job (default: 0==automatic)
--single-thread : use a single thread for both I/O and compression (result slightly different than -T1)
programs/benchzstd.c
+24 -19
View File
@@ -70,6 +70,8 @@ static const size_t maxMemory = (sizeof(size_t)==4) ?
#define DISPLAY(...) { fprintf(stderr, __VA_ARGS__); fflush(NULL); }
#define DISPLAYLEVEL(l, ...) if (displayLevel>=l) { DISPLAY(__VA_ARGS__); }
/* 0 : no display; 1: errors; 2 : + result + interaction + warnings; 3 : + progression; 4 : + information */
#define OUTPUT(...) { fprintf(stdout, __VA_ARGS__); fflush(NULL); }
#define OUTPUTLEVEL(l, ...) if (displayLevel>=l) { OUTPUT(__VA_ARGS__); }
/* *************************************
@@ -129,7 +131,7 @@ BMK_advancedParams_t BMK_initAdvancedParams(void) {
0, /* ldmHashLog */
0, /* ldmBuckSizeLog */
0, /* ldmHashRateLog */
ZSTD_lcm_auto, /* literalCompressionMode */
ZSTD_ps_auto, /* literalCompressionMode */
0 /* useRowMatchFinder */
};
return res;
@@ -181,7 +183,7 @@ BMK_initCCtx(ZSTD_CCtx* ctx,
CHECK_Z(ZSTD_CCtx_setParameter(ctx, ZSTD_c_minMatch, (int)comprParams->minMatch));
CHECK_Z(ZSTD_CCtx_setParameter(ctx, ZSTD_c_targetLength, (int)comprParams->targetLength));
CHECK_Z(ZSTD_CCtx_setParameter(ctx, ZSTD_c_literalCompressionMode, (int)adv->literalCompressionMode));
CHECK_Z(ZSTD_CCtx_setParameter(ctx, ZSTD_c_strategy, comprParams->strategy));
CHECK_Z(ZSTD_CCtx_setParameter(ctx, ZSTD_c_strategy, (int)comprParams->strategy));
CHECK_Z(ZSTD_CCtx_loadDictionary(ctx, dictBuffer, dictBufferSize));
}
@@ -371,10 +373,7 @@ BMK_benchMemAdvancedNoAlloc(
if (adv->mode == BMK_decodeOnly) {
cSizes[nbBlocks] = thisBlockSize;
benchResult.cSize = thisBlockSize;
}
}
}
}
} } } }
/* warming up `compressedBuffer` */
if (adv->mode == BMK_decodeOnly) {
@@ -429,8 +428,9 @@ BMK_benchMemAdvancedNoAlloc(
dctxprep.dictBuffer = dictBuffer;
dctxprep.dictBufferSize = dictBufferSize;
DISPLAYLEVEL(2, "\r%70s\r", ""); /* blank line */
DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->\r", marks[markNb], displayName, (unsigned)srcSize);
OUTPUTLEVEL(2, "\r%70s\r", ""); /* blank line */
assert(srcSize < UINT_MAX);
OUTPUTLEVEL(2, "%2s-%-17.17s :%10u -> \r", marks[markNb], displayName, (unsigned)srcSize);
while (!(compressionCompleted && decompressionCompleted)) {
if (!compressionCompleted) {
@@ -442,7 +442,7 @@ BMK_benchMemAdvancedNoAlloc(
{ BMK_runTime_t const cResult = BMK_extract_runTime(cOutcome);
cSize = cResult.sumOfReturn;
ratio = (double)srcSize / cSize;
ratio = (double)srcSize / (double)cSize;
{ BMK_benchResult_t newResult;
newResult.cSpeed = (U64)((double)srcSize * TIMELOOP_NANOSEC / cResult.nanoSecPerRun);
benchResult.cSize = cSize;
@@ -451,11 +451,12 @@ BMK_benchMemAdvancedNoAlloc(
} }
{ int const ratioAccuracy = (ratio < 10.) ? 3 : 2;
DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.*f),%6.*f MB/s\r",
assert(cSize < UINT_MAX);
OUTPUTLEVEL(2, "%2s-%-17.17s :%10u ->%10u (x%5.*f), %6.*f MB/s \r",
marks[markNb], displayName,
(unsigned)srcSize, (unsigned)cSize,
ratioAccuracy, ratio,
benchResult.cSpeed < (10 MB) ? 2 : 1, (double)benchResult.cSpeed / MB_UNIT);
benchResult.cSpeed < (10 * MB_UNIT) ? 2 : 1, (double)benchResult.cSpeed / MB_UNIT);
}
compressionCompleted = BMK_isCompleted_TimedFn(timeStateCompress);
}
@@ -474,11 +475,11 @@ BMK_benchMemAdvancedNoAlloc(
}
{ int const ratioAccuracy = (ratio < 10.) ? 3 : 2;
DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.*f),%6.*f MB/s ,%6.1f MB/s \r",
OUTPUTLEVEL(2, "%2s-%-17.17s :%10u ->%10u (x%5.*f), %6.*f MB/s, %6.1f MB/s\r",
marks[markNb], displayName,
(unsigned)srcSize, (unsigned)cSize,
ratioAccuracy, ratio,
benchResult.cSpeed < (10 MB) ? 2 : 1, (double)benchResult.cSpeed / MB_UNIT,
benchResult.cSpeed < (10 * MB_UNIT) ? 2 : 1, (double)benchResult.cSpeed / MB_UNIT,
(double)benchResult.dSpeed / MB_UNIT);
}
decompressionCompleted = BMK_isCompleted_TimedFn(timeStateDecompress);
@@ -515,7 +516,7 @@ BMK_benchMemAdvancedNoAlloc(
DISPLAY("%02X ", ((const BYTE*)srcBuffer)[u+n]);
DISPLAY(" \n");
DISPLAY("decode: ");
for (n=lowest; n>0; n++)
for (n=lowest; n>0; n--)
DISPLAY("%02X ", resultBuffer[u-n]);
DISPLAY(" :%02X: ", resultBuffer[u]);
for (n=1; n<3; n++)
@@ -535,13 +536,13 @@ BMK_benchMemAdvancedNoAlloc(
double const cSpeed = (double)benchResult.cSpeed / MB_UNIT;
double const dSpeed = (double)benchResult.dSpeed / MB_UNIT;
if (adv->additionalParam) {
DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s (param=%d)\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName, adv->additionalParam);
OUTPUT("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s (param=%d)\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName, adv->additionalParam);
} else {
DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName);
OUTPUT("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName);
}
}
DISPLAYLEVEL(2, "%2i#\n", cLevel);
OUTPUTLEVEL(2, "%2i#\n", cLevel);
} /* Bench */
benchResult.cMem = (1ULL << (comprParams->windowLog)) + ZSTD_sizeof_CCtx(cctx);
@@ -670,7 +671,7 @@ static BMK_benchOutcome_t BMK_benchCLevel(const void* srcBuffer, size_t benchedS
}
if (displayLevel == 1 && !adv->additionalParam) /* --quiet mode */
DISPLAY("bench %s %s: input %u bytes, %u seconds, %u KB blocks\n",
OUTPUT("bench %s %s: input %u bytes, %u seconds, %u KB blocks\n",
ZSTD_VERSION_STRING, ZSTD_GIT_COMMIT_STRING,
(unsigned)benchedSize, adv->nbSeconds, (unsigned)(adv->blockSize>>10));
@@ -760,7 +761,7 @@ static int BMK_loadFiles(void* buffer, size_t bufferSize,
}
{ FILE* const f = fopen(fileNamesTable[n], "rb");
if (f==NULL) RETURN_ERROR_INT(10, "impossible to open file %s", fileNamesTable[n]);
DISPLAYLEVEL(2, "Loading %s... \r", fileNamesTable[n]);
OUTPUTLEVEL(2, "Loading %s... \r", fileNamesTable[n]);
if (fileSize > bufferSize-pos) fileSize = bufferSize-pos, nbFiles=n; /* buffer too small - stop after this file */
{ size_t const readSize = fread(((char*)buffer)+pos, 1, (size_t)fileSize, f);
if (readSize != (size_t)fileSize) RETURN_ERROR_INT(11, "could not read %s", fileNamesTable[n]);
@@ -797,6 +798,10 @@ BMK_benchOutcome_t BMK_benchFilesAdvanced(
RETURN_ERROR(15, BMK_benchOutcome_t, "Invalid Compression Level");
}
if (totalSizeToLoad == UTIL_FILESIZE_UNKNOWN) {
RETURN_ERROR(9, BMK_benchOutcome_t, "Error loading files");
}
fileSizes = (size_t*)calloc(nbFiles, sizeof(size_t));
if (!fileSizes) RETURN_ERROR(12, BMK_benchOutcome_t, "not enough memory for fileSizes");
programs/benchzstd.h
+1 -1
View File
@@ -116,7 +116,7 @@ typedef struct {
int ldmHashLog;
int ldmBucketSizeLog;
int ldmHashRateLog;
ZSTD_literalCompressionMode_e literalCompressionMode;
ZSTD_paramSwitch_e literalCompressionMode;
int useRowMatchFinder; /* use row-based matchfinder if possible */
} BMK_advancedParams_t;
programs/dibio.c
+154 -78
View File
@@ -49,6 +49,7 @@
static const size_t g_maxMemory = (sizeof(size_t) == 4) ? (2 GB - 64 MB) : ((size_t)(512 MB) << sizeof(size_t));
#define NOISELENGTH 32
#define MAX_SAMPLES_SIZE (2 GB) /* training dataset limited to 2GB */
/*-*************************************
@@ -88,6 +89,15 @@ static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
#undef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
/**
Returns the size of a file.
If error returns -1.
*/
static S64 DiB_getFileSize (const char * fileName)
{
U64 const fileSize = UTIL_getFileSize(fileName);
return (fileSize == UTIL_FILESIZE_UNKNOWN) ? -1 : (S64)fileSize;
}
/* ********************************************************
* File related operations
@@ -101,47 +111,67 @@ static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
* *bufferSizePtr is modified, it provides the amount data loaded within buffer.
* sampleSizes is filled with the size of each sample.
*/
static unsigned DiB_loadFiles(void* buffer, size_t* bufferSizePtr,
size_t* sampleSizes, unsigned sstSize,
const char** fileNamesTable, unsigned nbFiles, size_t targetChunkSize,
unsigned displayLevel)
static int DiB_loadFiles(
void* buffer, size_t* bufferSizePtr,
size_t* sampleSizes, int sstSize,
const char** fileNamesTable, int nbFiles,
size_t targetChunkSize, int displayLevel )
{
char* const buff = (char*)buffer;
size_t pos = 0;
unsigned nbLoadedChunks = 0, fileIndex;
size_t totalDataLoaded = 0;
int nbSamplesLoaded = 0;
int fileIndex = 0;
FILE * f = NULL;
for (fileIndex=0; fileIndex<nbFiles; fileIndex++) {
const char* const fileName = fileNamesTable[fileIndex];
unsigned long long const fs64 = UTIL_getFileSize(fileName);
unsigned long long remainingToLoad = (fs64 == UTIL_FILESIZE_UNKNOWN) ? 0 : fs64;
U32 const nbChunks = targetChunkSize ? (U32)((fs64 + (targetChunkSize-1)) / targetChunkSize) : 1;
U64 const chunkSize = targetChunkSize ? MIN(targetChunkSize, fs64) : fs64;
size_t const maxChunkSize = (size_t)MIN(chunkSize, SAMPLESIZE_MAX);
U32 cnb;
FILE* const f = fopen(fileName, "rb");
if (f==NULL) EXM_THROW(10, "zstd: dictBuilder: %s %s ", fileName, strerror(errno));
DISPLAYUPDATE(2, "Loading %s... \r", fileName);
for (cnb=0; cnb<nbChunks; cnb++) {
size_t const toLoad = (size_t)MIN(maxChunkSize, remainingToLoad);
if (toLoad > *bufferSizePtr-pos) break;
{ size_t const readSize = fread(buff+pos, 1, toLoad, f);
if (readSize != toLoad) EXM_THROW(11, "Pb reading %s", fileName);
pos += readSize;
sampleSizes[nbLoadedChunks++] = toLoad;
remainingToLoad -= targetChunkSize;
if (nbLoadedChunks == sstSize) { /* no more space left in sampleSizes table */
fileIndex = nbFiles; /* stop there */
assert(targetChunkSize <= SAMPLESIZE_MAX);
while ( nbSamplesLoaded < sstSize && fileIndex < nbFiles ) {
size_t fileDataLoaded;
S64 const fileSize = DiB_getFileSize(fileNamesTable[fileIndex]);
if (fileSize <= 0) /* skip if zero-size or file error */
continue;
f = fopen( fileNamesTable[fileIndex], "rb");
if (f == NULL)
EXM_THROW(10, "zstd: dictBuilder: %s %s ", fileNamesTable[fileIndex], strerror(errno));
DISPLAYUPDATE(2, "Loading %s... \r", fileNamesTable[fileIndex]);
/* Load the first chunk of data from the file */
fileDataLoaded = targetChunkSize > 0 ?
(size_t)MIN(fileSize, (S64)targetChunkSize) :
(size_t)MIN(fileSize, SAMPLESIZE_MAX );
if (totalDataLoaded + fileDataLoaded > *bufferSizePtr)
break;
if (fread( buff+totalDataLoaded, 1, fileDataLoaded, f ) != fileDataLoaded)
EXM_THROW(11, "Pb reading %s", fileNamesTable[fileIndex]);
sampleSizes[nbSamplesLoaded++] = fileDataLoaded;
totalDataLoaded += fileDataLoaded;
/* If file-chunking is enabled, load the rest of the file as more samples */
if (targetChunkSize > 0) {
while( (S64)fileDataLoaded < fileSize && nbSamplesLoaded < sstSize ) {
size_t const chunkSize = MIN((size_t)(fileSize-fileDataLoaded), targetChunkSize);
if (totalDataLoaded + chunkSize > *bufferSizePtr) /* buffer is full */
break;
}
if (toLoad < targetChunkSize) {
fseek(f, (long)(targetChunkSize - toLoad), SEEK_CUR);
} } }
fclose(f);
if (fread( buff+totalDataLoaded, 1, chunkSize, f ) != chunkSize)
EXM_THROW(11, "Pb reading %s", fileNamesTable[fileIndex]);
sampleSizes[nbSamplesLoaded++] = chunkSize;
totalDataLoaded += chunkSize;
fileDataLoaded += chunkSize;
}
}
fileIndex += 1;
fclose(f); f = NULL;
}
if (f != NULL)
fclose(f);
DISPLAYLEVEL(2, "\r%79s\r", "");
*bufferSizePtr = pos;
DISPLAYLEVEL(4, "loaded : %u KB \n", (unsigned)(pos >> 10))
return nbLoadedChunks;
DISPLAYLEVEL(4, "Loaded %d KB total training data, %d nb samples \n",
(int)(totalDataLoaded / (1 KB)), nbSamplesLoaded );
*bufferSizePtr = totalDataLoaded;
return nbSamplesLoaded;
}
#define DiB_rotl32(x,r) ((x << r) | (x >> (32 - r)))
@@ -223,11 +253,10 @@ static void DiB_saveDict(const char* dictFileName,
if (n!=0) EXM_THROW(5, "%s : flush error", dictFileName) }
}
typedef struct {
U64 totalSizeToLoad;
unsigned oneSampleTooLarge;
unsigned nbSamples;
S64 totalSizeToLoad;
int nbSamples;
int oneSampleTooLarge;
} fileStats;
/*! DiB_fileStats() :
@@ -235,46 +264,92 @@ typedef struct {
* provides the amount of data to be loaded and the resulting nb of samples.
* This is useful primarily for allocation purpose => sample buffer, and sample sizes table.
*/
static fileStats DiB_fileStats(const char** fileNamesTable, unsigned nbFiles, size_t chunkSize, unsigned displayLevel)
static fileStats DiB_fileStats(const char** fileNamesTable, int nbFiles, size_t chunkSize, int displayLevel)
{
fileStats fs;
unsigned n;
int n;
memset(&fs, 0, sizeof(fs));
// We assume that if chunking is requested, the chunk size is < SAMPLESIZE_MAX
assert( chunkSize <= SAMPLESIZE_MAX );
for (n=0; n<nbFiles; n++) {
U64 const fileSize = UTIL_getFileSize(fileNamesTable[n]);
U64 const srcSize = (fileSize == UTIL_FILESIZE_UNKNOWN) ? 0 : fileSize;
U32 const nbSamples = (U32)(chunkSize ? (srcSize + (chunkSize-1)) / chunkSize : 1);
U64 const chunkToLoad = chunkSize ? MIN(chunkSize, srcSize) : srcSize;
size_t const cappedChunkSize = (size_t)MIN(chunkToLoad, SAMPLESIZE_MAX);
fs.totalSizeToLoad += cappedChunkSize * nbSamples;
fs.oneSampleTooLarge |= (chunkSize > 2*SAMPLESIZE_MAX);
fs.nbSamples += nbSamples;
S64 const fileSize = DiB_getFileSize(fileNamesTable[n]);
// TODO: is there a minimum sample size? What if the file is 1-byte?
if (fileSize == 0) {
DISPLAYLEVEL(3, "Sample file '%s' has zero size, skipping...\n", fileNamesTable[n]);
continue;
}
/* the case where we are breaking up files in sample chunks */
if (chunkSize > 0)
{
// TODO: is there a minimum sample size? Can we have a 1-byte sample?
fs.nbSamples += (int)((fileSize + chunkSize-1) / chunkSize);
fs.totalSizeToLoad += fileSize;
}
else {
/* the case where one file is one sample */
if (fileSize > SAMPLESIZE_MAX) {
/* flag excessively large sample files */
fs.oneSampleTooLarge |= (fileSize > 2*SAMPLESIZE_MAX);
/* Limit to the first SAMPLESIZE_MAX (128kB) of the file */
DISPLAYLEVEL(3, "Sample file '%s' is too large, limiting to %d KB",
fileNamesTable[n], SAMPLESIZE_MAX / (1 KB));
}
fs.nbSamples += 1;
fs.totalSizeToLoad += MIN(fileSize, SAMPLESIZE_MAX);
}
}
DISPLAYLEVEL(4, "Preparing to load : %u KB \n", (unsigned)(fs.totalSizeToLoad >> 10));
DISPLAYLEVEL(4, "Found training data %d files, %d KB, %d samples\n", nbFiles, (int)(fs.totalSizeToLoad / (1 KB)), fs.nbSamples);
return fs;
}
int DiB_trainFromFiles(const char* dictFileName, unsigned maxDictSize,
const char** fileNamesTable, unsigned nbFiles, size_t chunkSize,
int DiB_trainFromFiles(const char* dictFileName, size_t maxDictSize,
const char** fileNamesTable, int nbFiles, size_t chunkSize,
ZDICT_legacy_params_t* params, ZDICT_cover_params_t* coverParams,
ZDICT_fastCover_params_t* fastCoverParams, int optimize)
ZDICT_fastCover_params_t* fastCoverParams, int optimize, unsigned memLimit)
{
unsigned const displayLevel = params ? params->zParams.notificationLevel :
coverParams ? coverParams->zParams.notificationLevel :
fastCoverParams ? fastCoverParams->zParams.notificationLevel :
0; /* should never happen */
fileStats fs;
size_t* sampleSizes; /* vector of sample sizes. Each sample can be up to SAMPLESIZE_MAX */
int nbSamplesLoaded; /* nb of samples effectively loaded in srcBuffer */
size_t loadedSize; /* total data loaded in srcBuffer for all samples */
void* srcBuffer /* contiguous buffer with training data/samples */;
void* const dictBuffer = malloc(maxDictSize);
fileStats const fs = DiB_fileStats(fileNamesTable, nbFiles, chunkSize, displayLevel);
size_t* const sampleSizes = (size_t*)malloc(fs.nbSamples * sizeof(size_t));
size_t const memMult = params ? MEMMULT :
coverParams ? COVER_MEMMULT:
FASTCOVER_MEMMULT;
size_t const maxMem = DiB_findMaxMem(fs.totalSizeToLoad * memMult) / memMult;
size_t loadedSize = (size_t) MIN ((unsigned long long)maxMem, fs.totalSizeToLoad);
void* const srcBuffer = malloc(loadedSize+NOISELENGTH);
int result = 0;
int const displayLevel = params ? params->zParams.notificationLevel :
coverParams ? coverParams->zParams.notificationLevel :
fastCoverParams ? fastCoverParams->zParams.notificationLevel : 0;
/* Shuffle input files before we start assessing how much sample datA to load.
The purpose of the shuffle is to pick random samples when the sample
set is larger than what we can load in memory. */
DISPLAYLEVEL(3, "Shuffling input files\n");
DiB_shuffle(fileNamesTable, nbFiles);
/* Figure out how much sample data to load with how many samples */
fs = DiB_fileStats(fileNamesTable, nbFiles, chunkSize, displayLevel);
{
int const memMult = params ? MEMMULT :
coverParams ? COVER_MEMMULT:
FASTCOVER_MEMMULT;
size_t const maxMem = DiB_findMaxMem(fs.totalSizeToLoad * memMult) / memMult;
/* Limit the size of the training data to the free memory */
/* Limit the size of the training data to 2GB */
/* TODO: there is opportunity to stop DiB_fileStats() early when the data limit is reached */
loadedSize = (size_t)MIN( MIN((S64)maxMem, fs.totalSizeToLoad), MAX_SAMPLES_SIZE );
if (memLimit != 0) {
DISPLAYLEVEL(2, "! Warning : setting manual memory limit for dictionary training data at %u MB \n",
(unsigned)(memLimit / (1 MB)));
loadedSize = (size_t)MIN(loadedSize, memLimit);
}
srcBuffer = malloc(loadedSize+NOISELENGTH);
sampleSizes = (size_t*)malloc(fs.nbSamples * sizeof(size_t));
}
/* Checks */
if ((!sampleSizes) || (!srcBuffer) || (!dictBuffer))
EXM_THROW(12, "not enough memory for DiB_trainFiles"); /* should not happen */
@@ -289,31 +364,32 @@ int DiB_trainFromFiles(const char* dictFileName, unsigned maxDictSize,
DISPLAYLEVEL(2, "! Alternatively, split files into fixed-size blocks representative of samples, with -B# \n");
EXM_THROW(14, "nb of samples too low"); /* we now clearly forbid this case */
}
if (fs.totalSizeToLoad < (unsigned long long)maxDictSize * 8) {
if (fs.totalSizeToLoad < (S64)maxDictSize * 8) {
DISPLAYLEVEL(2, "! Warning : data size of samples too small for target dictionary size \n");
DISPLAYLEVEL(2, "! Samples should be about 100x larger than target dictionary size \n");
}
/* init */
if (loadedSize < fs.totalSizeToLoad)
DISPLAYLEVEL(1, "Not enough memory; training on %u MB only...\n", (unsigned)(loadedSize >> 20));
if ((S64)loadedSize < fs.totalSizeToLoad)
DISPLAYLEVEL(1, "Training samples set too large (%u MB); training on %u MB only...\n",
(unsigned)(fs.totalSizeToLoad / (1 MB)),
(unsigned)(loadedSize / (1 MB)));
/* Load input buffer */
DISPLAYLEVEL(3, "Shuffling input files\n");
DiB_shuffle(fileNamesTable, nbFiles);
DiB_loadFiles(srcBuffer, &loadedSize, sampleSizes, fs.nbSamples, fileNamesTable, nbFiles, chunkSize, displayLevel);
nbSamplesLoaded = DiB_loadFiles(
srcBuffer, &loadedSize, sampleSizes, fs.nbSamples, fileNamesTable,
nbFiles, chunkSize, displayLevel);
{ size_t dictSize;
if (params) {
DiB_fillNoise((char*)srcBuffer + loadedSize, NOISELENGTH); /* guard band, for end of buffer condition */
dictSize = ZDICT_trainFromBuffer_legacy(dictBuffer, maxDictSize,
srcBuffer, sampleSizes, fs.nbSamples,
srcBuffer, sampleSizes, nbSamplesLoaded,
*params);
} else if (coverParams) {
if (optimize) {
dictSize = ZDICT_optimizeTrainFromBuffer_cover(dictBuffer, maxDictSize,
srcBuffer, sampleSizes, fs.nbSamples,
srcBuffer, sampleSizes, nbSamplesLoaded,
coverParams);
if (!ZDICT_isError(dictSize)) {
unsigned splitPercentage = (unsigned)(coverParams->splitPoint * 100);
@@ -322,13 +398,13 @@ int DiB_trainFromFiles(const char* dictFileName, unsigned maxDictSize,
}
} else {
dictSize = ZDICT_trainFromBuffer_cover(dictBuffer, maxDictSize, srcBuffer,
sampleSizes, fs.nbSamples, *coverParams);
sampleSizes, nbSamplesLoaded, *coverParams);
}
} else {
assert(fastCoverParams != NULL);
if (optimize) {
dictSize = ZDICT_optimizeTrainFromBuffer_fastCover(dictBuffer, maxDictSize,
srcBuffer, sampleSizes, fs.nbSamples,
srcBuffer, sampleSizes, nbSamplesLoaded,
fastCoverParams);
if (!ZDICT_isError(dictSize)) {
unsigned splitPercentage = (unsigned)(fastCoverParams->splitPoint * 100);
@@ -338,7 +414,7 @@ int DiB_trainFromFiles(const char* dictFileName, unsigned maxDictSize,
}
} else {
dictSize = ZDICT_trainFromBuffer_fastCover(dictBuffer, maxDictSize, srcBuffer,
sampleSizes, fs.nbSamples, *fastCoverParams);
sampleSizes, nbSamplesLoaded, *fastCoverParams);
}
}
if (ZDICT_isError(dictSize)) {
programs/dibio.h
+3 -3
View File
@@ -31,9 +31,9 @@
`parameters` is optional and can be provided with values set to 0, meaning "default".
@return : 0 == ok. Any other : error.
*/
int DiB_trainFromFiles(const char* dictFileName, unsigned maxDictSize,
const char** fileNamesTable, unsigned nbFiles, size_t chunkSize,
int DiB_trainFromFiles(const char* dictFileName, size_t maxDictSize,
const char** fileNamesTable, int nbFiles, size_t chunkSize,
ZDICT_legacy_params_t* params, ZDICT_cover_params_t* coverParams,
ZDICT_fastCover_params_t* fastCoverParams, int optimize);
ZDICT_fastCover_params_t* fastCoverParams, int optimize, unsigned memLimit);
#endif
programs/fileio.c
+165 -69
View File
@@ -320,7 +320,7 @@ struct FIO_prefs_s {
size_t targetCBlockSize;
int srcSizeHint;
int testMode;
ZSTD_literalCompressionMode_e literalCompressionMode;
ZSTD_paramSwitch_e literalCompressionMode;
/* IO preferences */
U32 removeSrcFile;
@@ -392,7 +392,7 @@ FIO_prefs_t* FIO_createPreferences(void)
ret->targetCBlockSize = 0;
ret->srcSizeHint = 0;
ret->testMode = 0;
ret->literalCompressionMode = ZSTD_lcm_auto;
ret->literalCompressionMode = ZSTD_ps_auto;
ret->excludeCompressedFiles = 0;
ret->allowBlockDevices = 0;
return ret;
@@ -510,7 +510,7 @@ void FIO_setTestMode(FIO_prefs_t* const prefs, int testMode) {
void FIO_setLiteralCompressionMode(
FIO_prefs_t* const prefs,
ZSTD_literalCompressionMode_e mode) {
ZSTD_paramSwitch_e mode) {
prefs->literalCompressionMode = mode;
}
@@ -732,29 +732,43 @@ static size_t FIO_createDictBuffer(void** bufferPtr, const char* fileName, FIO_p
{
FILE* fileHandle;
U64 fileSize;
stat_t statbuf;
assert(bufferPtr != NULL);
*bufferPtr = NULL;
if (fileName == NULL) return 0;
DISPLAYLEVEL(4,"Loading %s as dictionary \n", fileName);
fileHandle = fopen(fileName, "rb");
if (fileHandle==NULL) EXM_THROW(31, "%s: %s", fileName, strerror(errno));
fileSize = UTIL_getFileSize(fileName);
if (!UTIL_stat(fileName, &statbuf)) {
EXM_THROW(31, "Stat failed on dictionary file %s: %s", fileName, strerror(errno));
}
if (!UTIL_isRegularFileStat(&statbuf)) {
EXM_THROW(32, "Dictionary %s must be a regular file.", fileName);
}
fileHandle = fopen(fileName, "rb");
if (fileHandle == NULL) {
EXM_THROW(33, "Couldn't open dictionary %s: %s", fileName, strerror(errno));
}
fileSize = UTIL_getFileSizeStat(&statbuf);
{
size_t const dictSizeMax = prefs->patchFromMode ? prefs->memLimit : DICTSIZE_MAX;
if (fileSize > dictSizeMax) {
EXM_THROW(32, "Dictionary file %s is too large (> %u bytes)",
EXM_THROW(34, "Dictionary file %s is too large (> %u bytes)",
fileName, (unsigned)dictSizeMax); /* avoid extreme cases */
}
}
*bufferPtr = malloc((size_t)fileSize);
if (*bufferPtr==NULL) EXM_THROW(34, "%s", strerror(errno));
{ size_t const readSize = fread(*bufferPtr, 1, (size_t)fileSize, fileHandle);
if (readSize != fileSize)
if (readSize != fileSize) {
EXM_THROW(35, "Error reading dictionary file %s : %s",
fileName, strerror(errno));
}
}
fclose(fileHandle);
return (size_t)fileSize;
@@ -889,26 +903,25 @@ static int FIO_removeMultiFilesWarning(FIO_ctx_t* const fCtx, const FIO_prefs_t*
if (fCtx->nbFilesTotal > 1 && !prefs->overwrite) {
if (g_display_prefs.displayLevel <= displayLevelCutoff) {
if (prefs->removeSrcFile) {
DISPLAYLEVEL(1, "zstd: Aborting... not deleting files and processing into dst: %s", outFileName);
DISPLAYLEVEL(1, "zstd: Aborting... not deleting files and processing into dst: %s\n", outFileName);
error = 1;
}
} else {
if (!strcmp(outFileName, stdoutmark)) {
DISPLAYLEVEL(2, "zstd: WARNING: all input files will be processed and concatenated into stdout. ");
DISPLAYLEVEL(2, "zstd: WARNING: all input files will be processed and concatenated into stdout. \n");
} else {
DISPLAYLEVEL(2, "zstd: WARNING: all input files will be processed and concatenated into a single output file: %s ", outFileName);
DISPLAYLEVEL(2, "zstd: WARNING: all input files will be processed and concatenated into a single output file: %s \n", outFileName);
}
DISPLAYLEVEL(2, "\nThe concatenated output CANNOT regenerate the original directory tree. ")
DISPLAYLEVEL(2, "The concatenated output CANNOT regenerate the original directory tree. \n")
if (prefs->removeSrcFile) {
if (fCtx->hasStdoutOutput) {
DISPLAYLEVEL(1, "\nAborting. Use -f if you really want to delete the files and output to stdout");
DISPLAYLEVEL(1, "Aborting. Use -f if you really want to delete the files and output to stdout\n");
error = 1;
} else {
error = g_display_prefs.displayLevel > displayLevelCutoff && UTIL_requireUserConfirmation("This is a destructive operation. Proceed? (y/n): ", "Aborting...", "yY", fCtx->hasStdinInput);
}
}
}
DISPLAY("\n");
}
return error;
}
@@ -962,7 +975,7 @@ static void FIO_adjustParamsForPatchFromMode(FIO_prefs_t* const prefs,
DISPLAYLEVEL(1, "- Use --single-thread mode in the zstd cli\n");
DISPLAYLEVEL(1, "- Set a larger targetLength (eg. --zstd=targetLength=4096)\n");
DISPLAYLEVEL(1, "- Set a larger chainLog (eg. --zstd=chainLog=%u)\n", ZSTD_CHAINLOG_MAX);
DISPLAYLEVEL(1, "Also consdier playing around with searchLog and hashLog\n");
DISPLAYLEVEL(1, "Also consider playing around with searchLog and hashLog\n");
}
}
@@ -1332,6 +1345,7 @@ FIO_compressZstdFrame(FIO_ctx_t* const fCtx,
FILE* const dstFile = ress.dstFile;
U64 compressedfilesize = 0;
ZSTD_EndDirective directive = ZSTD_e_continue;
U64 pledgedSrcSize = ZSTD_CONTENTSIZE_UNKNOWN;
/* stats */
ZSTD_frameProgression previous_zfp_update = { 0, 0, 0, 0, 0, 0 };
@@ -1342,16 +1356,31 @@ FIO_compressZstdFrame(FIO_ctx_t* const fCtx,
unsigned inputPresented = 0;
unsigned inputBlocked = 0;
unsigned lastJobID = 0;
UTIL_HumanReadableSize_t const file_hrs = UTIL_makeHumanReadableSize(fileSize);
DISPLAYLEVEL(6, "compression using zstd format \n");
/* init */
if (fileSize != UTIL_FILESIZE_UNKNOWN) {
pledgedSrcSize = fileSize;
CHECK(ZSTD_CCtx_setPledgedSrcSize(ress.cctx, fileSize));
} else if (prefs->streamSrcSize > 0) {
/* unknown source size; use the declared stream size */
pledgedSrcSize = prefs->streamSrcSize;
CHECK( ZSTD_CCtx_setPledgedSrcSize(ress.cctx, prefs->streamSrcSize) );
}
{
int windowLog;
UTIL_HumanReadableSize_t windowSize;
CHECK(ZSTD_CCtx_getParameter(ress.cctx, ZSTD_c_windowLog, &windowLog));
if (windowLog == 0) {
const ZSTD_compressionParameters cParams = ZSTD_getCParams(compressionLevel, fileSize, 0);
windowLog = cParams.windowLog;
}
windowSize = UTIL_makeHumanReadableSize(MAX(1ULL, MIN(1ULL << windowLog, pledgedSrcSize)));
DISPLAYLEVEL(4, "Decompression will require %.*f%s of memory\n", windowSize.precision, windowSize.value, windowSize.suffix);
}
(void)srcFileName;
/* Main compression loop */
@@ -1395,14 +1424,17 @@ FIO_compressZstdFrame(FIO_ctx_t* const fCtx,
if (READY_FOR_UPDATE()) {
ZSTD_frameProgression const zfp = ZSTD_getFrameProgression(ress.cctx);
double const cShare = (double)zfp.produced / (double)(zfp.consumed + !zfp.consumed/*avoid div0*/) * 100;
UTIL_HumanReadableSize_t const buffered_hrs = UTIL_makeHumanReadableSize(zfp.ingested - zfp.consumed);
UTIL_HumanReadableSize_t const consumed_hrs = UTIL_makeHumanReadableSize(zfp.consumed);
UTIL_HumanReadableSize_t const produced_hrs = UTIL_makeHumanReadableSize(zfp.produced);
/* display progress notifications */
if (g_display_prefs.displayLevel >= 3) {
DISPLAYUPDATE(3, "\r(L%i) Buffered :%4u MB - Consumed :%4u MB - Compressed :%4u MB => %.2f%% ",
DISPLAYUPDATE(3, "\r(L%i) Buffered :%6.*f%4s - Consumed :%6.*f%4s - Compressed :%6.*f%4s => %.2f%% ",
compressionLevel,
(unsigned)((zfp.ingested - zfp.consumed) >> 20),
(unsigned)(zfp.consumed >> 20),
(unsigned)(zfp.produced >> 20),
buffered_hrs.precision, buffered_hrs.value, buffered_hrs.suffix,
consumed_hrs.precision, consumed_hrs.value, consumed_hrs.suffix,
produced_hrs.precision, produced_hrs.value, produced_hrs.suffix,
cShare );
} else if (g_display_prefs.displayLevel >= 2 || g_display_prefs.progressSetting == FIO_ps_always) {
/* Require level 2 or forcibly displayed progress counter for summarized updates */
@@ -1419,10 +1451,10 @@ FIO_compressZstdFrame(FIO_ctx_t* const fCtx,
fCtx->currFileIdx+1, fCtx->nbFilesTotal, (int)(18-srcFileNameSize), srcFileName);
}
}
DISPLAYLEVEL(1, "Read : %2u ", (unsigned)(zfp.consumed >> 20));
DISPLAYLEVEL(1, "Read:%6.*f%4s ", consumed_hrs.precision, consumed_hrs.value, consumed_hrs.suffix);
if (fileSize != UTIL_FILESIZE_UNKNOWN)
DISPLAYLEVEL(2, "/ %2u ", (unsigned)(fileSize >> 20));
DISPLAYLEVEL(1, "MB ==> %2.f%%", cShare);
DISPLAYLEVEL(2, "/%6.*f%4s", file_hrs.precision, file_hrs.value, file_hrs.suffix);
DISPLAYLEVEL(1, " ==> %2.f%%", cShare);
DELAY_NEXT_UPDATE();
}
@@ -1592,16 +1624,20 @@ FIO_compressFilename_internal(FIO_ctx_t* const fCtx,
if (g_display_prefs.displayLevel >= 2 &&
!fCtx->hasStdoutOutput &&
(g_display_prefs.displayLevel >= 3 || fCtx->nbFilesTotal <= 1)) {
UTIL_HumanReadableSize_t hr_isize = UTIL_makeHumanReadableSize((U64) readsize);
UTIL_HumanReadableSize_t hr_osize = UTIL_makeHumanReadableSize((U64) compressedfilesize);
if (readsize == 0) {
DISPLAYLEVEL(2,"%-20s : (%6llu => %6llu bytes, %s) \n",
DISPLAYLEVEL(2,"%-20s : (%6.*f%4s => %6.*f%4s, %s) \n",
srcFileName,
(unsigned long long)readsize, (unsigned long long) compressedfilesize,
hr_isize.precision, hr_isize.value, hr_isize.suffix,
hr_osize.precision, hr_osize.value, hr_osize.suffix,
dstFileName);
} else {
DISPLAYLEVEL(2,"%-20s :%6.2f%% (%6llu => %6llu bytes, %s) \n",
DISPLAYLEVEL(2,"%-20s :%6.2f%% (%6.*f%4s => %6.*f%4s, %s) \n",
srcFileName,
(double)compressedfilesize / (double)readsize * 100,
(unsigned long long)readsize, (unsigned long long) compressedfilesize,
hr_isize.precision, hr_isize.value, hr_isize.suffix,
hr_osize.precision, hr_osize.value, hr_osize.suffix,
dstFileName);
}
}
@@ -1638,6 +1674,7 @@ static int FIO_compressFilename_dstFile(FIO_ctx_t* const fCtx,
int closeDstFile = 0;
int result;
stat_t statbuf;
int transferMTime = 0;
assert(ress.srcFile != NULL);
if (ress.dstFile == NULL) {
int dstFilePermissions = DEFAULT_FILE_PERMISSIONS;
@@ -1645,6 +1682,7 @@ static int FIO_compressFilename_dstFile(FIO_ctx_t* const fCtx,
&& UTIL_stat(srcFileName, &statbuf)
&& UTIL_isRegularFileStat(&statbuf) ) {
dstFilePermissions = statbuf.st_mode;
transferMTime = 1;
}
closeDstFile = 1;
@@ -1671,6 +1709,9 @@ static int FIO_compressFilename_dstFile(FIO_ctx_t* const fCtx,
DISPLAYLEVEL(1, "zstd: %s: %s \n", dstFileName, strerror(errno));
result=1;
}
if (transferMTime) {
UTIL_utime(dstFileName, &statbuf);
}
if ( (result != 0) /* operation failure */
&& strcmp(dstFileName, stdoutmark) /* special case : don't remove() stdout */
) {
@@ -1754,6 +1795,50 @@ FIO_compressFilename_srcFile(FIO_ctx_t* const fCtx,
return result;
}
static const char* checked_index(const char* options[], size_t length, size_t index) {
assert(index < length);
// Necessary to avoid warnings since -O3 will omit the above `assert`
(void) length;
return options[index];
}
#define INDEX(options, index) checked_index((options), sizeof(options) / sizeof(char*), (index))
void FIO_displayCompressionParameters(const FIO_prefs_t* prefs) {
static const char* formatOptions[5] = {ZSTD_EXTENSION, GZ_EXTENSION, XZ_EXTENSION,
LZMA_EXTENSION, LZ4_EXTENSION};
static const char* sparseOptions[3] = {" --no-sparse", "", " --sparse"};
static const char* checkSumOptions[3] = {" --no-check", "", " --check"};
static const char* rowMatchFinderOptions[3] = {"", " --no-row-match-finder", " --row-match-finder"};
static const char* compressLiteralsOptions[3] = {"", " --compress-literals", " --no-compress-literals"};
assert(g_display_prefs.displayLevel >= 4);
DISPLAY("--format=%s", formatOptions[prefs->compressionType]);
DISPLAY("%s", INDEX(sparseOptions, prefs->sparseFileSupport));
DISPLAY("%s", prefs->dictIDFlag ? "" : " --no-dictID");
DISPLAY("%s", INDEX(checkSumOptions, prefs->checksumFlag));
DISPLAY(" --block-size=%d", prefs->blockSize);
if (prefs->adaptiveMode)
DISPLAY(" --adapt=min=%d,max=%d", prefs->minAdaptLevel, prefs->maxAdaptLevel);
DISPLAY("%s", INDEX(rowMatchFinderOptions, prefs->useRowMatchFinder));
DISPLAY("%s", prefs->rsyncable ? " --rsyncable" : "");
if (prefs->streamSrcSize)
DISPLAY(" --stream-size=%u", (unsigned) prefs->streamSrcSize);
if (prefs->srcSizeHint)
DISPLAY(" --size-hint=%d", prefs->srcSizeHint);
if (prefs->targetCBlockSize)
DISPLAY(" --target-compressed-block-size=%u", (unsigned) prefs->targetCBlockSize);
DISPLAY("%s", INDEX(compressLiteralsOptions, prefs->literalCompressionMode));
DISPLAY(" --memory=%u", prefs->memLimit ? prefs->memLimit : 128 MB);
DISPLAY(" --threads=%d", prefs->nbWorkers);
DISPLAY("%s", prefs->excludeCompressedFiles ? " --exclude-compressed" : "");
DISPLAY(" --%scontent-size", prefs->contentSize ? "" : "no-");
DISPLAY("\n");
}
#undef INDEX
int FIO_compressFilename(FIO_ctx_t* const fCtx, FIO_prefs_t* const prefs, const char* dstFileName,
const char* srcFileName, const char* dictFileName,
int compressionLevel, ZSTD_compressionParameters comprParams)
@@ -1890,10 +1975,15 @@ int FIO_compressMultipleFilenames(FIO_ctx_t* const fCtx,
}
if (fCtx->nbFilesProcessed >= 1 && fCtx->nbFilesTotal > 1 && fCtx->totalBytesInput != 0) {
UTIL_HumanReadableSize_t hr_isize = UTIL_makeHumanReadableSize((U64) fCtx->totalBytesInput);
UTIL_HumanReadableSize_t hr_osize = UTIL_makeHumanReadableSize((U64) fCtx->totalBytesOutput);
DISPLAYLEVEL(2, "\r%79s\r", "");
DISPLAYLEVEL(2, "%d files compressed : %.2f%% (%6zu => %6zu bytes)\n", fCtx->nbFilesProcessed,
DISPLAYLEVEL(2, "%3d files compressed :%.2f%% (%6.*f%4s => %6.*f%4s)\n",
fCtx->nbFilesProcessed,
(double)fCtx->totalBytesOutput/((double)fCtx->totalBytesInput)*100,
fCtx->totalBytesInput, fCtx->totalBytesOutput);
hr_isize.precision, hr_isize.value, hr_isize.suffix,
hr_osize.precision, hr_osize.value, hr_osize.suffix);
}
FIO_freeCResources(&ress);
@@ -2155,6 +2245,8 @@ FIO_decompressZstdFrame(FIO_ctx_t* const fCtx, dRess_t* ress, FILE* finput,
ZSTD_inBuffer inBuff = { ress->srcBuffer, ress->srcBufferLoaded, 0 };
ZSTD_outBuffer outBuff= { ress->dstBuffer, ress->dstBufferSize, 0 };
size_t const readSizeHint = ZSTD_decompressStream(ress->dctx, &outBuff, &inBuff);
const int displayLevel = (!fCtx->hasStdoutOutput || g_display_prefs.progressSetting == FIO_ps_always) ? 1 : 2;
UTIL_HumanReadableSize_t const hrs = UTIL_makeHumanReadableSize(alreadyDecoded+frameSize);
if (ZSTD_isError(readSizeHint)) {
DISPLAYLEVEL(1, "%s : Decoding error (36) : %s \n",
srcFileName, ZSTD_getErrorName(readSizeHint));
@@ -2165,21 +2257,19 @@ FIO_decompressZstdFrame(FIO_ctx_t* const fCtx, dRess_t* ress, FILE* finput,
/* Write block */
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, outBuff.pos, prefs, storedSkips);
frameSize += outBuff.pos;
if (!fCtx->hasStdoutOutput || g_display_prefs.progressSetting == FIO_ps_always) {
if (fCtx->nbFilesTotal > 1) {
size_t srcFileNameSize = strlen(srcFileName);
if (srcFileNameSize > 18) {
const char* truncatedSrcFileName = srcFileName + srcFileNameSize - 15;
DISPLAYUPDATE(2, "\rDecompress: %2u/%2u files. Current: ...%s : %u MB... ",
fCtx->currFileIdx+1, fCtx->nbFilesTotal, truncatedSrcFileName, (unsigned)((alreadyDecoded+frameSize)>>20) );
} else {
DISPLAYUPDATE(2, "\rDecompress: %2u/%2u files. Current: %s : %u MB... ",
fCtx->currFileIdx+1, fCtx->nbFilesTotal, srcFileName, (unsigned)((alreadyDecoded+frameSize)>>20) );
}
if (fCtx->nbFilesTotal > 1) {
size_t srcFileNameSize = strlen(srcFileName);
if (srcFileNameSize > 18) {
const char* truncatedSrcFileName = srcFileName + srcFileNameSize - 15;
DISPLAYUPDATE(displayLevel, "\rDecompress: %2u/%2u files. Current: ...%s : %.*f%s... ",
fCtx->currFileIdx+1, fCtx->nbFilesTotal, truncatedSrcFileName, hrs.precision, hrs.value, hrs.suffix);
} else {
DISPLAYUPDATE(2, "\r%-20.20s : %u MB... ",
srcFileName, (unsigned)((alreadyDecoded+frameSize)>>20) );
DISPLAYUPDATE(displayLevel, "\rDecompress: %2u/%2u files. Current: %s : %.*f%s... ",
fCtx->currFileIdx+1, fCtx->nbFilesTotal, srcFileName, hrs.precision, hrs.value, hrs.suffix);
}
} else {
DISPLAYUPDATE(displayLevel, "\r%-20.20s : %.*f%s... ",
srcFileName, hrs.precision, hrs.value, hrs.suffix);
}
if (inBuff.pos > 0) {
@@ -2403,9 +2493,11 @@ FIO_decompressLz4Frame(dRess_t* ress, FILE* srcFile,
/* Write Block */
if (decodedBytes) {
UTIL_HumanReadableSize_t hrs;
storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, decodedBytes, prefs, storedSkips);
filesize += decodedBytes;
DISPLAYUPDATE(2, "\rDecompressed : %u MB ", (unsigned)(filesize>>20));
hrs = UTIL_makeHumanReadableSize(filesize);
DISPLAYUPDATE(2, "\rDecompressed : %.*f%s ", hrs.precision, hrs.value, hrs.suffix);
}
if (!nextToLoad) break;
@@ -2513,10 +2605,10 @@ static int FIO_decompressFrames(FIO_ctx_t* const fCtx,
fCtx->totalBytesOutput += (size_t)filesize;
DISPLAYLEVEL(2, "\r%79s\r", "");
/* No status message in pipe mode (stdin - stdout) or multi-files mode */
if (g_display_prefs.displayLevel >= 2) {
if (fCtx->nbFilesTotal <= 1 || g_display_prefs.displayLevel >= 3) {
DISPLAYLEVEL(2, "%-20s: %llu bytes \n", srcFileName, filesize);
}
if ((g_display_prefs.displayLevel >= 2 && fCtx->nbFilesTotal <= 1) ||
g_display_prefs.displayLevel >= 3 ||
g_display_prefs.progressSetting == FIO_ps_always) {
DISPLAYLEVEL(1, "\r%-20s: %llu bytes \n", srcFileName, filesize);
}
return 0;
@@ -2537,6 +2629,7 @@ static int FIO_decompressDstFile(FIO_ctx_t* const fCtx,
int result;
stat_t statbuf;
int releaseDstFile = 0;
int transferMTime = 0;
if ((ress.dstFile == NULL) && (prefs->testMode==0)) {
int dstFilePermissions = DEFAULT_FILE_PERMISSIONS;
@@ -2544,6 +2637,7 @@ static int FIO_decompressDstFile(FIO_ctx_t* const fCtx,
&& UTIL_stat(srcFileName, &statbuf)
&& UTIL_isRegularFileStat(&statbuf) ) {
dstFilePermissions = statbuf.st_mode;
transferMTime = 1;
}
releaseDstFile = 1;
@@ -2569,6 +2663,10 @@ static int FIO_decompressDstFile(FIO_ctx_t* const fCtx,
result = 1;
}
if (transferMTime) {
UTIL_utime(dstFileName, &statbuf);
}
if ( (result != 0) /* operation failure */
&& strcmp(dstFileName, stdoutmark) /* special case : don't remove() stdout */
) {
@@ -2973,25 +3071,24 @@ getFileInfo(fileInfo_t* info, const char* srcFileName)
static void
displayInfo(const char* inFileName, const fileInfo_t* info, int displayLevel)
{
unsigned const unit = info->compressedSize < (1 MB) ? (1 KB) : (1 MB);
const char* const unitStr = info->compressedSize < (1 MB) ? "KB" : "MB";
double const windowSizeUnit = (double)info->windowSize / unit;
double const compressedSizeUnit = (double)info->compressedSize / unit;
double const decompressedSizeUnit = (double)info->decompressedSize / unit;
UTIL_HumanReadableSize_t const window_hrs = UTIL_makeHumanReadableSize(info->windowSize);
UTIL_HumanReadableSize_t const compressed_hrs = UTIL_makeHumanReadableSize(info->compressedSize);
UTIL_HumanReadableSize_t const decompressed_hrs = UTIL_makeHumanReadableSize(info->decompressedSize);
double const ratio = (info->compressedSize == 0) ? 0 : ((double)info->decompressedSize)/(double)info->compressedSize;
const char* const checkString = (info->usesCheck ? "XXH64" : "None");
if (displayLevel <= 2) {
if (!info->decompUnavailable) {
DISPLAYOUT("%6d %5d %7.2f %2s %9.2f %2s %5.3f %5s %s\n",
DISPLAYOUT("%6d %5d %6.*f%4s %8.*f%4s %5.3f %5s %s\n",
info->numSkippableFrames + info->numActualFrames,
info->numSkippableFrames,
compressedSizeUnit, unitStr, decompressedSizeUnit, unitStr,
compressed_hrs.precision, compressed_hrs.value, compressed_hrs.suffix,
decompressed_hrs.precision, decompressed_hrs.value, decompressed_hrs.suffix,
ratio, checkString, inFileName);
} else {
DISPLAYOUT("%6d %5d %7.2f %2s %5s %s\n",
DISPLAYOUT("%6d %5d %6.*f%4s %5s %s\n",
info->numSkippableFrames + info->numActualFrames,
info->numSkippableFrames,
compressedSizeUnit, unitStr,
compressed_hrs.precision, compressed_hrs.value, compressed_hrs.suffix,
checkString, inFileName);
}
} else {
@@ -2999,15 +3096,15 @@ displayInfo(const char* inFileName, const fileInfo_t* info, int displayLevel)
DISPLAYOUT("# Zstandard Frames: %d\n", info->numActualFrames);
if (info->numSkippableFrames)
DISPLAYOUT("# Skippable Frames: %d\n", info->numSkippableFrames);
DISPLAYOUT("Window Size: %.2f %2s (%llu B)\n",
windowSizeUnit, unitStr,
DISPLAYOUT("Window Size: %.*f%s (%llu B)\n",
window_hrs.precision, window_hrs.value, window_hrs.suffix,
(unsigned long long)info->windowSize);
DISPLAYOUT("Compressed Size: %.2f %2s (%llu B)\n",
compressedSizeUnit, unitStr,
DISPLAYOUT("Compressed Size: %.*f%s (%llu B)\n",
compressed_hrs.precision, compressed_hrs.value, compressed_hrs.suffix,
(unsigned long long)info->compressedSize);
if (!info->decompUnavailable) {
DISPLAYOUT("Decompressed Size: %.2f %2s (%llu B)\n",
decompressedSizeUnit, unitStr,
DISPLAYOUT("Decompressed Size: %.*f%s (%llu B)\n",
decompressed_hrs.precision, decompressed_hrs.value, decompressed_hrs.suffix,
(unsigned long long)info->decompressedSize);
DISPLAYOUT("Ratio: %.4f\n", ratio);
}
@@ -3095,24 +3192,23 @@ int FIO_listMultipleFiles(unsigned numFiles, const char** filenameTable, int dis
error |= FIO_listFile(&total, filenameTable[u], displayLevel);
} }
if (numFiles > 1 && displayLevel <= 2) { /* display total */
unsigned const unit = total.compressedSize < (1 MB) ? (1 KB) : (1 MB);
const char* const unitStr = total.compressedSize < (1 MB) ? "KB" : "MB";
double const compressedSizeUnit = (double)total.compressedSize / unit;
double const decompressedSizeUnit = (double)total.decompressedSize / unit;
UTIL_HumanReadableSize_t const compressed_hrs = UTIL_makeHumanReadableSize(total.compressedSize);
UTIL_HumanReadableSize_t const decompressed_hrs = UTIL_makeHumanReadableSize(total.decompressedSize);
double const ratio = (total.compressedSize == 0) ? 0 : ((double)total.decompressedSize)/(double)total.compressedSize;
const char* const checkString = (total.usesCheck ? "XXH64" : "");
DISPLAYOUT("----------------------------------------------------------------- \n");
if (total.decompUnavailable) {
DISPLAYOUT("%6d %5d %7.2f %2s %5s %u files\n",
DISPLAYOUT("%6d %5d %6.*f%4s %5s %u files\n",
total.numSkippableFrames + total.numActualFrames,
total.numSkippableFrames,
compressedSizeUnit, unitStr,
compressed_hrs.precision, compressed_hrs.value, compressed_hrs.suffix,
checkString, (unsigned)total.nbFiles);
} else {
DISPLAYOUT("%6d %5d %7.2f %2s %9.2f %2s %5.3f %5s %u files\n",
DISPLAYOUT("%6d %5d %6.*f%4s %8.*f%4s %5.3f %5s %u files\n",
total.numSkippableFrames + total.numActualFrames,
total.numSkippableFrames,
compressedSizeUnit, unitStr, decompressedSizeUnit, unitStr,
compressed_hrs.precision, compressed_hrs.value, compressed_hrs.suffix,
decompressed_hrs.precision, decompressed_hrs.value, decompressed_hrs.suffix,
ratio, checkString, (unsigned)total.nbFiles);
} }
return error;
programs/fileio.h
+2 -1
View File
@@ -100,7 +100,7 @@ void FIO_setSrcSizeHint(FIO_prefs_t* const prefs, size_t srcSizeHint);
void FIO_setTestMode(FIO_prefs_t* const prefs, int testMode);
void FIO_setLiteralCompressionMode(
FIO_prefs_t* const prefs,
ZSTD_literalCompressionMode_e mode);
ZSTD_paramSwitch_e mode);
void FIO_setProgressSetting(FIO_progressSetting_e progressSetting);
void FIO_setNotificationLevel(int level);
@@ -108,6 +108,7 @@ void FIO_setExcludeCompressedFile(FIO_prefs_t* const prefs, int excludeCompresse
void FIO_setAllowBlockDevices(FIO_prefs_t* const prefs, int allowBlockDevices);
void FIO_setPatchFromMode(FIO_prefs_t* const prefs, int value);
void FIO_setContentSize(FIO_prefs_t* const prefs, int value);
void FIO_displayCompressionParameters(const FIO_prefs_t* prefs);
/* FIO_ctx_t functions */
void FIO_setNbFilesTotal(FIO_ctx_t* const fCtx, int value);
programs/util.c
+174 -66
View File
@@ -159,6 +159,29 @@ int UTIL_chmod(char const* filename, const stat_t* statbuf, mode_t permissions)
return chmod(filename, permissions);
}
/* set access and modification times */
int UTIL_utime(const char* filename, const stat_t *statbuf)
{
int ret;
/* We check that st_mtime is a macro here in order to give us confidence
* that struct stat has a struct timespec st_mtim member. We need this
* check because there are some platforms that claim to be POSIX 2008
* compliant but which do not have st_mtim... */
#if (PLATFORM_POSIX_VERSION >= 200809L) && defined(st_mtime)
/* (atime, mtime) */
struct timespec timebuf[2] = { {0, UTIME_NOW} };
timebuf[1] = statbuf->st_mtim;
ret = utimensat(AT_FDCWD, filename, timebuf, 0);
#else
struct utimbuf timebuf;
timebuf.actime = time(NULL);
timebuf.modtime = statbuf->st_mtime;
ret = utime(filename, &timebuf);
#endif
errno = 0;
return ret;
}
int UTIL_setFileStat(const char *filename, const stat_t *statbuf)
{
int res = 0;
@@ -168,25 +191,7 @@ int UTIL_setFileStat(const char *filename, const stat_t *statbuf)
return -1;
/* set access and modification times */
/* We check that st_mtime is a macro here in order to give us confidence
* that struct stat has a struct timespec st_mtim member. We need this
* check because there are some platforms that claim to be POSIX 2008
* compliant but which do not have st_mtim... */
#if (PLATFORM_POSIX_VERSION >= 200809L) && defined(st_mtime)
{
/* (atime, mtime) */
struct timespec timebuf[2] = { {0, UTIME_NOW} };
timebuf[1] = statbuf->st_mtim;
res += utimensat(AT_FDCWD, filename, timebuf, 0);
}
#else
{
struct utimbuf timebuf;
timebuf.actime = time(NULL);
timebuf.modtime = statbuf->st_mtime;
res += utime(filename, &timebuf);
}
#endif
res += UTIL_utime(filename, statbuf);
#if !defined(_WIN32)
res += chown(filename, statbuf->st_uid, statbuf->st_gid); /* Copy ownership */
@@ -303,6 +308,62 @@ U64 UTIL_getFileSizeStat(const stat_t* statbuf)
return (U64)statbuf->st_size;
}
UTIL_HumanReadableSize_t UTIL_makeHumanReadableSize(U64 size)
{
UTIL_HumanReadableSize_t hrs;
if (g_utilDisplayLevel > 3) {
/* In verbose mode, do not scale sizes down, except in the case of
* values that exceed the integral precision of a double. */
if (size >= (1ull << 53)) {
hrs.value = (double)size / (1ull << 20);
hrs.suffix = " MiB";
/* At worst, a double representation of a maximal size will be
* accurate to better than tens of kilobytes. */
hrs.precision = 2;
} else {
hrs.value = (double)size;
hrs.suffix = " B";
hrs.precision = 0;
}
} else {
/* In regular mode, scale sizes down and use suffixes. */
if (size >= (1ull << 60)) {
hrs.value = (double)size / (1ull << 60);
hrs.suffix = " EiB";
} else if (size >= (1ull << 50)) {
hrs.value = (double)size / (1ull << 50);
hrs.suffix = " PiB";
} else if (size >= (1ull << 40)) {
hrs.value = (double)size / (1ull << 40);
hrs.suffix = " TiB";
} else if (size >= (1ull << 30)) {
hrs.value = (double)size / (1ull << 30);
hrs.suffix = " GiB";
} else if (size >= (1ull << 20)) {
hrs.value = (double)size / (1ull << 20);
hrs.suffix = " MiB";
} else if (size >= (1ull << 10)) {
hrs.value = (double)size / (1ull << 10);
hrs.suffix = " KiB";
} else {
hrs.value = (double)size;
hrs.suffix = " B";
}
if (hrs.value >= 100 || (U64)hrs.value == size) {
hrs.precision = 0;
} else if (hrs.value >= 10) {
hrs.precision = 1;
} else if (hrs.value > 1) {
hrs.precision = 2;
} else {
hrs.precision = 3;
}
}
return hrs;
}
U64 UTIL_getTotalFileSize(const char* const * fileNamesTable, unsigned nbFiles)
{
@@ -931,7 +992,7 @@ makeUniqueMirroredDestDirs(char** srcDirNames, unsigned nbFile, const char* outD
char* prevDirName = srcDirNames[i - 1];
char* currDirName = srcDirNames[i];
/* note: we alwasy compare trimmed path, i.e.:
/* note: we always compare trimmed path, i.e.:
* src dir of "./foo" and "/foo" will be both saved into:
* "outDirName/foo/" */
if (!firstIsParentOrSameDirOfSecond(trimPath(prevDirName),
@@ -939,7 +1000,7 @@ makeUniqueMirroredDestDirs(char** srcDirNames, unsigned nbFile, const char* outD
uniqueDirNr++;
/* we need maintain original src dir name instead of trimmed
* dir, so we can retrive the original src dir's mode_t */
* dir, so we can retrieve the original src dir's mode_t */
uniqueDirNames[uniqueDirNr - 1] = currDirName;
}
@@ -1048,7 +1109,7 @@ FileNamesTable* UTIL_createFNT_fromROTable(const char** filenames, size_t nbFile
/*-****************************************
* count the number of physical cores
* count the number of cores
******************************************/
#if defined(_WIN32) || defined(WIN32)
@@ -1057,10 +1118,26 @@ FileNamesTable* UTIL_createFNT_fromROTable(const char** filenames, size_t nbFile
typedef BOOL(WINAPI* LPFN_GLPI)(PSYSTEM_LOGICAL_PROCESSOR_INFORMATION, PDWORD);
int UTIL_countPhysicalCores(void)
DWORD CountSetBits(ULONG_PTR bitMask)
{
static int numPhysicalCores = 0;
if (numPhysicalCores != 0) return numPhysicalCores;
DWORD LSHIFT = sizeof(ULONG_PTR)*8 - 1;
DWORD bitSetCount = 0;
ULONG_PTR bitTest = (ULONG_PTR)1 << LSHIFT;
DWORD i;
for (i = 0; i <= LSHIFT; ++i)
{
bitSetCount += ((bitMask & bitTest)?1:0);
bitTest/=2;
}
return bitSetCount;
}
int UTIL_countCores(int logical)
{
static int numCores = 0;
if (numCores != 0) return numCores;
{ LPFN_GLPI glpi;
BOOL done = FALSE;
@@ -1106,7 +1183,10 @@ int UTIL_countPhysicalCores(void)
while (byteOffset + sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION) <= returnLength) {
if (ptr->Relationship == RelationProcessorCore) {
numPhysicalCores++;
if (logical)
numCores += CountSetBits(ptr->ProcessorMask);
else
numCores++;
}
ptr++;
@@ -1115,17 +1195,17 @@ int UTIL_countPhysicalCores(void)
free(buffer);
return numPhysicalCores;
return numCores;
}
failed:
/* try to fall back on GetSystemInfo */
{ SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
numPhysicalCores = sysinfo.dwNumberOfProcessors;
if (numPhysicalCores == 0) numPhysicalCores = 1; /* just in case */
numCores = sysinfo.dwNumberOfProcessors;
if (numCores == 0) numCores = 1; /* just in case */
}
return numPhysicalCores;
return numCores;
}
#elif defined(__APPLE__)
@@ -1134,24 +1214,24 @@ failed:
/* Use apple-provided syscall
* see: man 3 sysctl */
int UTIL_countPhysicalCores(void)
int UTIL_countCores(int logical)
{
static S32 numPhysicalCores = 0; /* apple specifies int32_t */
if (numPhysicalCores != 0) return numPhysicalCores;
static S32 numCores = 0; /* apple specifies int32_t */
if (numCores != 0) return numCores;
{ size_t size = sizeof(S32);
int const ret = sysctlbyname("hw.physicalcpu", &numPhysicalCores, &size, NULL, 0);
int const ret = sysctlbyname(logical ? "hw.logicalcpu" : "hw.physicalcpu", &numCores, &size, NULL, 0);
if (ret != 0) {
if (errno == ENOENT) {
/* entry not present, fall back on 1 */
numPhysicalCores = 1;
numCores = 1;
} else {
perror("zstd: can't get number of physical cpus");
perror("zstd: can't get number of cpus");
exit(1);
}
}
return numPhysicalCores;
return numCores;
}
}
@@ -1160,16 +1240,16 @@ int UTIL_countPhysicalCores(void)
/* parse /proc/cpuinfo
* siblings / cpu cores should give hyperthreading ratio
* otherwise fall back on sysconf */
int UTIL_countPhysicalCores(void)
int UTIL_countCores(int logical)
{
static int numPhysicalCores = 0;
static int numCores = 0;
if (numPhysicalCores != 0) return numPhysicalCores;
if (numCores != 0) return numCores;
numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numPhysicalCores == -1) {
numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numCores == -1) {
/* value not queryable, fall back on 1 */
return numPhysicalCores = 1;
return numCores = 1;
}
/* try to determine if there's hyperthreading */
@@ -1183,7 +1263,7 @@ int UTIL_countPhysicalCores(void)
if (cpuinfo == NULL) {
/* fall back on the sysconf value */
return numPhysicalCores;
return numCores;
}
/* assume the cpu cores/siblings values will be constant across all
@@ -1216,13 +1296,13 @@ int UTIL_countPhysicalCores(void)
ratio = siblings / cpu_cores;
}
if (ratio && numPhysicalCores > ratio) {
numPhysicalCores = numPhysicalCores / ratio;
if (ratio && numCores > ratio && !logical) {
numCores = numCores / ratio;
}
failed:
fclose(cpuinfo);
return numPhysicalCores;
return numCores;
}
}
@@ -1233,52 +1313,70 @@ failed:
/* Use physical core sysctl when available
* see: man 4 smp, man 3 sysctl */
int UTIL_countPhysicalCores(void)
int UTIL_countCores(int logical)
{
static int numPhysicalCores = 0; /* freebsd sysctl is native int sized */
if (numPhysicalCores != 0) return numPhysicalCores;
static int numCores = 0; /* freebsd sysctl is native int sized */
#if __FreeBSD_version >= 1300008
static int perCore = 1;
#endif
if (numCores != 0) return numCores;
#if __FreeBSD_version >= 1300008
{ size_t size = sizeof(numPhysicalCores);
int ret = sysctlbyname("kern.smp.cores", &numPhysicalCores, &size, NULL, 0);
if (ret == 0) return numPhysicalCores;
{ size_t size = sizeof(numCores);
int ret = sysctlbyname("kern.smp.cores", &numCores, &size, NULL, 0);
if (ret == 0) {
if (logical) {
ret = sysctlbyname("kern.smp.threads_per_core", &perCore, &size, NULL, 0);
/* default to physical cores if logical cannot be read */
if (ret == 0)
numCores *= perCore;
}
return numCores;
}
if (errno != ENOENT) {
perror("zstd: can't get number of physical cpus");
perror("zstd: can't get number of cpus");
exit(1);
}
/* sysctl not present, fall through to older sysconf method */
}
#else
/* suppress unused parameter warning */
(void) logical;
#endif
numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numPhysicalCores == -1) {
numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numCores == -1) {
/* value not queryable, fall back on 1 */
numPhysicalCores = 1;
numCores = 1;
}
return numPhysicalCores;
return numCores;
}
#elif defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__CYGWIN__)
/* Use POSIX sysconf
* see: man 3 sysconf */
int UTIL_countPhysicalCores(void)
int UTIL_countCores(int logical)
{
static int numPhysicalCores = 0;
static int numCores = 0;
if (numPhysicalCores != 0) return numPhysicalCores;
/* suppress unused parameter warning */
(void)logical;
numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numPhysicalCores == -1) {
if (numCores != 0) return numCores;
numCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (numCores == -1) {
/* value not queryable, fall back on 1 */
return numPhysicalCores = 1;
return numCores = 1;
}
return numPhysicalCores;
return numCores;
}
#else
int UTIL_countPhysicalCores(void)
int UTIL_countCores(int logical)
{
/* assume 1 */
return 1;
@@ -1286,6 +1384,16 @@ int UTIL_countPhysicalCores(void)
#endif
int UTIL_countPhysicalCores(void)
{
return UTIL_countCores(0);
}
int UTIL_countLogicalCores(void)
{
return UTIL_countCores(1);
}
#if defined (__cplusplus)
}
#endif
programs/util.h
+33 -1
View File
@@ -64,7 +64,7 @@ extern "C" {
# define SET_REALTIME_PRIORITY /* disabled */
# endif
#else /* unknown non-unix operating systen */
#else /* unknown non-unix operating system */
# define UTIL_sleep(s) /* disabled */
# define UTIL_sleepMilli(milli) /* disabled */
# define SET_REALTIME_PRIORITY /* disabled */
@@ -122,6 +122,7 @@ int UTIL_requireUserConfirmation(const char* prompt, const char* abortMsg, const
#define STRDUP(s) strdup(s)
#endif
/**
* Calls platform's equivalent of stat() on filename and writes info to statbuf.
* Returns success (1) or failure (0).
@@ -135,6 +136,14 @@ int UTIL_stat(const char* filename, stat_t* statbuf);
*/
int UTIL_setFileStat(const char* filename, const stat_t* statbuf);
/**
* Set atime to now and mtime to the st_mtim in statbuf.
*
* Directly wraps utime() or utimensat(). Returns -1 on error.
* Does not validate filename is valid.
*/
int UTIL_utime(const char* filename, const stat_t *statbuf);
/*
* These helpers operate on a pre-populated stat_t, i.e., the result of
* calling one of the above functions.
@@ -170,6 +179,23 @@ int UTIL_isFIFO(const char* infilename);
U64 UTIL_getFileSize(const char* infilename);
U64 UTIL_getTotalFileSize(const char* const * fileNamesTable, unsigned nbFiles);
/**
* Take @size in bytes,
* prepare the components to pretty-print it in a scaled way.
* The components in the returned struct should be passed in
* precision, value, suffix order to a "%.*f%s" format string.
* Output policy is sensible to @g_utilDisplayLevel,
* for verbose mode (@g_utilDisplayLevel >= 4),
* does not scale down.
*/
typedef struct {
double value;
int precision;
const char* suffix;
} UTIL_HumanReadableSize_t;
UTIL_HumanReadableSize_t UTIL_makeHumanReadableSize(U64 size);
int UTIL_compareStr(const void *p1, const void *p2);
const char* UTIL_getFileExtension(const char* infilename);
void UTIL_mirrorSourceFilesDirectories(const char** fileNamesTable, unsigned int nbFiles, const char *outDirName);
@@ -275,13 +301,19 @@ void UTIL_refFilename(FileNamesTable* fnt, const char* filename);
FileNamesTable*
UTIL_createExpandedFNT(const char* const* filenames, size_t nbFilenames, int followLinks);
#if defined(_WIN32) || defined(WIN32)
DWORD CountSetBits(ULONG_PTR bitMask);
#endif
/*-****************************************
* System
******************************************/
int UTIL_countCores(int logical);
int UTIL_countPhysicalCores(void);
int UTIL_countLogicalCores(void);
#if defined (__cplusplus)
}
programs/zstd.1
+56 -207
View File
@@ -1,491 +1,340 @@
.
.TH "ZSTD" "1" "May 2021" "zstd 1.5.0" "User Commands"
.
.TH "ZSTD" "1" "September 2021" "zstd 1.5.1" "User Commands"
.SH "NAME"
\fBzstd\fR \- zstd, zstdmt, unzstd, zstdcat \- Compress or decompress \.zst files
.
.SH "SYNOPSIS"
\fBzstd\fR [\fIOPTIONS\fR] [\-|\fIINPUT\-FILE\fR] [\-o \fIOUTPUT\-FILE\fR]
.
.TS
allbox;
\fBzstd\fR [\fIOPTIONS\fR] [\- \fIINPUT\-FILE\fR] [\-o \fIOUTPUT\-FILE\fR]
.TE
.P
\fBzstdmt\fR is equivalent to \fBzstd \-T0\fR
.
.P
\fBunzstd\fR is equivalent to \fBzstd \-d\fR
.
.P
\fBzstdcat\fR is equivalent to \fBzstd \-dcf\fR
.
.SH "DESCRIPTION"
\fBzstd\fR is a fast lossless compression algorithm and data compression tool, with command line syntax similar to \fBgzip (1)\fR and \fBxz (1)\fR\. It is based on the \fBLZ77\fR family, with further FSE & huff0 entropy stages\. \fBzstd\fR offers highly configurable compression speed, with fast modes at > 200 MB/s per core, and strong modes nearing lzma compression ratios\. It also features a very fast decoder, with speeds > 500 MB/s per core\.
.
.P
\fBzstd\fR command line syntax is generally similar to gzip, but features the following differences :
.
.IP "\(bu" 4
.IP "\[ci]" 4
Source files are preserved by default\. It\'s possible to remove them automatically by using the \fB\-\-rm\fR command\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
When compressing a single file, \fBzstd\fR displays progress notifications and result summary by default\. Use \fB\-q\fR to turn them off\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fBzstd\fR does not accept input from console, but it properly accepts \fBstdin\fR when it\'s not the console\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fBzstd\fR displays a short help page when command line is an error\. Use \fB\-q\fR to turn it off\.
.
.IP "" 0
.
.P
\fBzstd\fR compresses or decompresses each \fIfile\fR according to the selected operation mode\. If no \fIfiles\fR are given or \fIfile\fR is \fB\-\fR, \fBzstd\fR reads from standard input and writes the processed data to standard output\. \fBzstd\fR will refuse to write compressed data to standard output if it is a terminal : it will display an error message and skip the \fIfile\fR\. Similarly, \fBzstd\fR will refuse to read compressed data from standard input if it is a terminal\.
.
.P
Unless \fB\-\-stdout\fR or \fB\-o\fR is specified, \fIfiles\fR are written to a new file whose name is derived from the source \fIfile\fR name:
.
.IP "\(bu" 4
.IP "\[ci]" 4
When compressing, the suffix \fB\.zst\fR is appended to the source filename to get the target filename\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
When decompressing, the \fB\.zst\fR suffix is removed from the source filename to get the target filename
.
.IP "" 0
.
.SS "Concatenation with \.zst files"
It is possible to concatenate \fB\.zst\fR files as is\. \fBzstd\fR will decompress such files as if they were a single \fB\.zst\fR file\.
.
.SH "OPTIONS"
.
.SS "Integer suffixes and special values"
In most places where an integer argument is expected, an optional suffix is supported to easily indicate large integers\. There must be no space between the integer and the suffix\.
.
.TP
\fBKiB\fR
Multiply the integer by 1,024 (2^10)\. \fBKi\fR, \fBK\fR, and \fBKB\fR are accepted as synonyms for \fBKiB\fR\.
.
Multiply the integer by 1,024 (2\e^10)\. \fBKi\fR, \fBK\fR, and \fBKB\fR are accepted as synonyms for \fBKiB\fR\.
.TP
\fBMiB\fR
Multiply the integer by 1,048,576 (2^20)\. \fBMi\fR, \fBM\fR, and \fBMB\fR are accepted as synonyms for \fBMiB\fR\.
.
Multiply the integer by 1,048,576 (2\e^20)\. \fBMi\fR, \fBM\fR, and \fBMB\fR are accepted as synonyms for \fBMiB\fR\.
.SS "Operation mode"
If multiple operation mode options are given, the last one takes effect\.
.
.TP
\fB\-z\fR, \fB\-\-compress\fR
Compress\. This is the default operation mode when no operation mode option is specified and no other operation mode is implied from the command name (for example, \fBunzstd\fR implies \fB\-\-decompress\fR)\.
.
.TP
\fB\-d\fR, \fB\-\-decompress\fR, \fB\-\-uncompress\fR
Decompress\.
.
.TP
\fB\-t\fR, \fB\-\-test\fR
Test the integrity of compressed \fIfiles\fR\. This option is equivalent to \fB\-\-decompress \-\-stdout\fR except that the decompressed data is discarded instead of being written to standard output\. No files are created or removed\.
.
.TP
\fB\-b#\fR
Benchmark file(s) using compression level #
.
.TP
\fB\-\-train FILEs\fR
Use FILEs as a training set to create a dictionary\. The training set should contain a lot of small files (> 100)\.
.
.TP
\fB\-l\fR, \fB\-\-list\fR
Display information related to a zstd compressed file, such as size, ratio, and checksum\. Some of these fields may not be available\. This command can be augmented with the \fB\-v\fR modifier\.
.
.SS "Operation modifiers"
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-#\fR: \fB#\fR compression level [1\-19] (default: 3)
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-ultra\fR: unlocks high compression levels 20+ (maximum 22), using a lot more memory\. Note that decompression will also require more memory when using these levels\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-fast[=#]\fR: switch to ultra\-fast compression levels\. If \fB=#\fR is not present, it defaults to \fB1\fR\. The higher the value, the faster the compression speed, at the cost of some compression ratio\. This setting overwrites compression level if one was set previously\. Similarly, if a compression level is set after \fB\-\-fast\fR, it overrides it\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-T#\fR, \fB\-\-threads=#\fR: Compress using \fB#\fR working threads (default: 1)\. If \fB#\fR is 0, attempt to detect and use the number of physical CPU cores\. In all cases, the nb of threads is capped to \fBZSTDMT_NBWORKERS_MAX\fR, which is either 64 in 32\-bit mode, or 256 for 64\-bit environments\. This modifier does nothing if \fBzstd\fR is compiled without multithread support\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-single\-thread\fR: Does not spawn a thread for compression, use a single thread for both I/O and compression\. In this mode, compression is serialized with I/O, which is slightly slower\. (This is different from \fB\-T1\fR, which spawns 1 compression thread in parallel of I/O)\. This mode is the only one available when multithread support is disabled\. Single\-thread mode features lower memory usage\. Final compressed result is slightly different from \fB\-T1\fR\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-auto\-threads={physical,logical} (default: physical)\fR: When using a default amount of threads via \fB\-T0\fR, choose the default based on the number of detected physical or logical cores\.
.IP "\[ci]" 4
\fB\-\-adapt[=min=#,max=#]\fR : \fBzstd\fR will dynamically adapt compression level to perceived I/O conditions\. Compression level adaptation can be observed live by using command \fB\-v\fR\. Adaptation can be constrained between supplied \fBmin\fR and \fBmax\fR levels\. The feature works when combined with multi\-threading and \fB\-\-long\fR mode\. It does not work with \fB\-\-single\-thread\fR\. It sets window size to 8 MB by default (can be changed manually, see \fBwlog\fR)\. Due to the chaotic nature of dynamic adaptation, compressed result is not reproducible\. \fInote\fR : at the time of this writing, \fB\-\-adapt\fR can remain stuck at low speed when combined with multiple worker threads (>=2)\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-long[=#]\fR: enables long distance matching with \fB#\fR \fBwindowLog\fR, if not \fB#\fR is not present it defaults to \fB27\fR\. This increases the window size (\fBwindowLog\fR) and memory usage for both the compressor and decompressor\. This setting is designed to improve the compression ratio for files with long matches at a large distance\.
.
.IP
Note: If \fBwindowLog\fR is set to larger than 27, \fB\-\-long=windowLog\fR or \fB\-\-memory=windowSize\fR needs to be passed to the decompressor\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-D DICT\fR: use \fBDICT\fR as Dictionary to compress or decompress FILE(s)
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-patch\-from FILE\fR: Specify the file to be used as a reference point for zstd\'s diff engine\. This is effectively dictionary compression with some convenient parameter selection, namely that windowSize > srcSize\.
.
.IP
Note: cannot use both this and \-D together Note: \fB\-\-long\fR mode will be automatically activated if chainLog < fileLog (fileLog being the windowLog required to cover the whole file)\. You can also manually force it\. Node: for all levels, you can use \-\-patch\-from in \-\-single\-thread mode to improve compression ratio at the cost of speed Note: for level 19, you can get increased compression ratio at the cost of speed by specifying \fB\-\-zstd=targetLength=\fR to be something large (i\.e 4096), and by setting a large \fB\-\-zstd=chainLog=\fR
.
.IP "\(bu" 4
\fB\-\-rsyncable\fR : \fBzstd\fR will periodically synchronize the compression state to make the compressed file more rsync\-friendly\. There is a negligible impact to compression ratio, and the faster compression levels will see a small compression speed hit\. This feature does not work with \fB\-\-single\-thread\fR\. You probably don\'t want to use it with long range mode, since it will decrease the effectiveness of the synchronization points, but your milage may vary\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-rsyncable\fR : \fBzstd\fR will periodically synchronize the compression state to make the compressed file more rsync\-friendly\. There is a negligible impact to compression ratio, and the faster compression levels will see a small compression speed hit\. This feature does not work with \fB\-\-single\-thread\fR\. You probably don\'t want to use it with long range mode, since it will decrease the effectiveness of the synchronization points, but your mileage may vary\.
.IP "\[ci]" 4
\fB\-C\fR, \fB\-\-[no\-]check\fR: add integrity check computed from uncompressed data (default: enabled)
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-[no\-]content\-size\fR: enable / disable whether or not the original size of the file is placed in the header of the compressed file\. The default option is \-\-content\-size (meaning that the original size will be placed in the header)\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-no\-dictID\fR: do not store dictionary ID within frame header (dictionary compression)\. The decoder will have to rely on implicit knowledge about which dictionary to use, it won\'t be able to check if it\'s correct\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-M#\fR, \fB\-\-memory=#\fR: Set a memory usage limit\. By default, Zstandard uses 128 MB for decompression as the maximum amount of memory the decompressor is allowed to use, but you can override this manually if need be in either direction (ie\. you can increase or decrease it)\.
.
.IP
This is also used during compression when using with \-\-patch\-from=\. In this case, this parameter overrides that maximum size allowed for a dictionary\. (128 MB)\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-stream\-size=#\fR : Sets the pledged source size of input coming from a stream\. This value must be exact, as it will be included in the produced frame header\. Incorrect stream sizes will cause an error\. This information will be used to better optimize compression parameters, resulting in better and potentially faster compression, especially for smaller source sizes\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-size\-hint=#\fR: When handling input from a stream, \fBzstd\fR must guess how large the source size will be when optimizing compression parameters\. If the stream size is relatively small, this guess may be a poor one, resulting in a higher compression ratio than expected\. This feature allows for controlling the guess when needed\. Exact guesses result in better compression ratios\. Overestimates result in slightly degraded compression ratios, while underestimates may result in significant degradation\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-o FILE\fR: save result into \fBFILE\fR
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-f\fR, \fB\-\-force\fR: disable input and output checks\. Allows overwriting existing files, input from console, output to stdout, operating on links, block devices, etc\.
.
.IP "\(bu" 4
\fB\-c\fR, \fB\-\-stdout\fR: force write to standard output, even if it is the console
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-c\fR, \fB\-\-stdout\fR: write to standard output (even if it is the console)
.IP "\[ci]" 4
\fB\-\-[no\-]sparse\fR: enable / disable sparse FS support, to make files with many zeroes smaller on disk\. Creating sparse files may save disk space and speed up decompression by reducing the amount of disk I/O\. default: enabled when output is into a file, and disabled when output is stdout\. This setting overrides default and can force sparse mode over stdout\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-rm\fR: remove source file(s) after successful compression or decompression\. If used in combination with \-o, will trigger a confirmation prompt (which can be silenced with \-f), as this is a destructive operation\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-k\fR, \fB\-\-keep\fR: keep source file(s) after successful compression or decompression\. This is the default behavior\.
.
.IP "\(bu" 4
\fB\-r\fR: operate recursively on directories
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-r\fR: operate recursively on directories\. It selects all files in the named directory and all its subdirectories\. This can be useful both to reduce command line typing, and to circumvent shell expansion limitations, when there are a lot of files and naming breaks the maximum size of a command line\.
.IP "\[ci]" 4
\fB\-\-filelist FILE\fR read a list of files to process as content from \fBFILE\fR\. Format is compatible with \fBls\fR output, with one file per line\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-output\-dir\-flat DIR\fR: resulting files are stored into target \fBDIR\fR directory, instead of same directory as origin file\. Be aware that this command can introduce name collision issues, if multiple files, from different directories, end up having the same name\. Collision resolution ensures first file with a given name will be present in \fBDIR\fR, while in combination with \fB\-f\fR, the last file will be present instead\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-output\-dir\-mirror DIR\fR: similar to \fB\-\-output\-dir\-flat\fR, the output files are stored underneath target \fBDIR\fR directory, but this option will replicate input directory hierarchy into output \fBDIR\fR\.
.
.IP
If input directory contains "\.\.", the files in this directory will be ignored\. If input directory is an absolute directory (i\.e\. "/var/tmp/abc"), it will be stored into the "output\-dir/var/tmp/abc"\. If there are multiple input files or directories, name collision resolution will follow the same rules as \fB\-\-output\-dir\-flat\fR\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-format=FORMAT\fR: compress and decompress in other formats\. If compiled with support, zstd can compress to or decompress from other compression algorithm formats\. Possibly available options are \fBzstd\fR, \fBgzip\fR, \fBxz\fR, \fBlzma\fR, and \fBlz4\fR\. If no such format is provided, \fBzstd\fR is the default\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-h\fR/\fB\-H\fR, \fB\-\-help\fR: display help/long help and exit
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-V\fR, \fB\-\-version\fR: display version number and exit\. Advanced : \fB\-vV\fR also displays supported formats\. \fB\-vvV\fR also displays POSIX support\. \fB\-q\fR will only display the version number, suitable for machine reading\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-v\fR, \fB\-\-verbose\fR: verbose mode, display more information
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-q\fR, \fB\-\-quiet\fR: suppress warnings, interactivity, and notifications\. specify twice to suppress errors too\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-no\-progress\fR: do not display the progress bar, but keep all other messages\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-show\-default\-cparams\fR: Shows the default compression parameters that will be used for a particular src file\. If the provided src file is not a regular file (eg\. named pipe), the cli will just output the default parameters\. That is, the parameters that are used when the src size is unknown\.
.
.IP "\(bu" 4
.IP "\[ci]" 4
\fB\-\-\fR: All arguments after \fB\-\-\fR are treated as files
.
.IP "" 0
.
.SS "Restricted usage of Environment Variables"
Using environment variables to set parameters has security implications\. Therefore, this avenue is intentionally restricted\. Only \fBZSTD_CLEVEL\fR and \fBZSTD_NBTHREADS\fR are currently supported\. They set the compression level and number of threads to use during compression, respectively\.
.
.P
\fBZSTD_CLEVEL\fR can be used to set the level between 1 and 19 (the "normal" range)\. If the value of \fBZSTD_CLEVEL\fR is not a valid integer, it will be ignored with a warning message\. \fBZSTD_CLEVEL\fR just replaces the default compression level (\fB3\fR)\.
.
.P
\fBZSTD_NBTHREADS\fR can be used to set the number of threads \fBzstd\fR will attempt to use during compression\. If the value of \fBZSTD_NBTHREADS\fR is not a valid unsigned integer, it will be ignored with a warning message\. \fBZSTD_NBTHREADS\fR has a default value of (\fB1\fR), and is capped at ZSTDMT_NBWORKERS_MAX==200\. \fBzstd\fR must be compiled with multithread support for this to have any effect\.
.
.P
They can both be overridden by corresponding command line arguments: \fB\-#\fR for compression level and \fB\-T#\fR for number of compression threads\.
.
.SH "DICTIONARY BUILDER"
\fBzstd\fR offers \fIdictionary\fR compression, which greatly improves efficiency on small files and messages\. It\'s possible to train \fBzstd\fR with a set of samples, the result of which is saved into a file called a \fBdictionary\fR\. Then during compression and decompression, reference the same dictionary, using command \fB\-D dictionaryFileName\fR\. Compression of small files similar to the sample set will be greatly improved\.
.
.TP
\fB\-\-train FILEs\fR
Use FILEs as training set to create a dictionary\. The training set should contain a lot of small files (> 100), and weight typically 100x the target dictionary size (for example, 10 MB for a 100 KB dictionary)\.
.
Use FILEs as training set to create a dictionary\. The training set should contain a lot of small files (> 100), and weight typically 100x the target dictionary size (for example, 10 MB for a 100 KB dictionary)\. \fB\-\-train\fR can be combined with \fB\-r\fR to indicate a directory rather than listing all the files, which can be useful to circumvent shell expansion limits\.
.IP
Supports multithreading if \fBzstd\fR is compiled with threading support\. Additional parameters can be specified with \fB\-\-train\-fastcover\fR\. The legacy dictionary builder can be accessed with \fB\-\-train\-legacy\fR\. The cover dictionary builder can be accessed with \fB\-\-train\-cover\fR\. Equivalent to \fB\-\-train\-fastcover=d=8,steps=4\fR\.
.
\fB\-\-train\fR supports multithreading if \fBzstd\fR is compiled with threading support (default)\. Additional parameters can be specified with \fB\-\-train\-fastcover\fR\. The legacy dictionary builder can be accessed with \fB\-\-train\-legacy\fR\. The slower cover dictionary builder can be accessed with \fB\-\-train\-cover\fR\. Default is equivalent to \fB\-\-train\-fastcover=d=8,steps=4\fR\.
.TP
\fB\-o file\fR
Dictionary saved into \fBfile\fR (default name: dictionary)\.
.
.TP
\fB\-\-maxdict=#\fR
Limit dictionary to specified size (default: 112640)\.
.
.TP
\fB\-#\fR
Use \fB#\fR compression level during training (optional)\. Will generate statistics more tuned for selected compression level, resulting in a \fIsmall\fR compression ratio improvement for this level\.
.
.TP
\fB\-B#\fR
Split input files in blocks of size # (default: no split)
.
Split input files into blocks of size # (default: no split)
.TP
\fB\-\-dictID=#\fR
A dictionary ID is a locally unique ID that a decoder can use to verify it is using the right dictionary\. By default, zstd will create a 4\-bytes random number ID\. It\'s possible to give a precise number instead\. Short numbers have an advantage : an ID < 256 will only need 1 byte in the compressed frame header, and an ID < 65536 will only need 2 bytes\. This compares favorably to 4 bytes default\. However, it\'s up to the dictionary manager to not assign twice the same ID to 2 different dictionaries\.
.
.TP
\fB\-\-train\-cover[=k#,d=#,steps=#,split=#,shrink[=#]]\fR
Select parameters for the default dictionary builder algorithm named cover\. If \fId\fR is not specified, then it tries \fId\fR = 6 and \fId\fR = 8\. If \fIk\fR is not specified, then it tries \fIsteps\fR values in the range [50, 2000]\. If \fIsteps\fR is not specified, then the default value of 40 is used\. If \fIsplit\fR is not specified or split <= 0, then the default value of 100 is used\. Requires that \fId\fR <= \fIk\fR\. If \fIshrink\fR flag is not used, then the default value for \fIshrinkDict\fR of 0 is used\. If \fIshrink\fR is not specified, then the default value for \fIshrinkDictMaxRegression\fR of 1 is used\.
.
.IP
Selects segments of size \fIk\fR with highest score to put in the dictionary\. The score of a segment is computed by the sum of the frequencies of all the subsegments of size \fId\fR\. Generally \fId\fR should be in the range [6, 8], occasionally up to 16, but the algorithm will run faster with d <= \fI8\fR\. Good values for \fIk\fR vary widely based on the input data, but a safe range is [2 * \fId\fR, 2000]\. If \fIsplit\fR is 100, all input samples are used for both training and testing to find optimal \fId\fR and \fIk\fR to build dictionary\. Supports multithreading if \fBzstd\fR is compiled with threading support\. Having \fIshrink\fR enabled takes a truncated dictionary of minimum size and doubles in size until compression ratio of the truncated dictionary is at most \fIshrinkDictMaxRegression%\fR worse than the compression ratio of the largest dictionary\.
.
.IP
Examples:
.
.IP
\fBzstd \-\-train\-cover FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=k=50,d=8 FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=d=8,steps=500 FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=k=50 FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=k=50,split=60 FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=shrink FILEs\fR
.
.IP
\fBzstd \-\-train\-cover=shrink=2 FILEs\fR
.
.TP
\fB\-\-train\-fastcover[=k#,d=#,f=#,steps=#,split=#,accel=#]\fR
Same as cover but with extra parameters \fIf\fR and \fIaccel\fR and different default value of split If \fIsplit\fR is not specified, then it tries \fIsplit\fR = 75\. If \fIf\fR is not specified, then it tries \fIf\fR = 20\. Requires that 0 < \fIf\fR < 32\. If \fIaccel\fR is not specified, then it tries \fIaccel\fR = 1\. Requires that 0 < \fIaccel\fR <= 10\. Requires that \fId\fR = 6 or \fId\fR = 8\.
.
.IP
\fIf\fR is log of size of array that keeps track of frequency of subsegments of size \fId\fR\. The subsegment is hashed to an index in the range [0,2^\fIf\fR \- 1]\. It is possible that 2 different subsegments are hashed to the same index, and they are considered as the same subsegment when computing frequency\. Using a higher \fIf\fR reduces collision but takes longer\.
.
.IP
Examples:
.
.IP
\fBzstd \-\-train\-fastcover FILEs\fR
.
.IP
\fBzstd \-\-train\-fastcover=d=8,f=15,accel=2 FILEs\fR
.
.TP
\fB\-\-train\-legacy[=selectivity=#]\fR
Use legacy dictionary builder algorithm with the given dictionary \fIselectivity\fR (default: 9)\. The smaller the \fIselectivity\fR value, the denser the dictionary, improving its efficiency but reducing its possible maximum size\. \fB\-\-train\-legacy=s=#\fR is also accepted\.
.
.IP
Examples:
.
.IP
\fBzstd \-\-train\-legacy FILEs\fR
.
.IP
\fBzstd \-\-train\-legacy=selectivity=8 FILEs\fR
.
.SH "BENCHMARK"
.
.TP
\fB\-b#\fR
benchmark file(s) using compression level #
.
.TP
\fB\-e#\fR
benchmark file(s) using multiple compression levels, from \fB\-b#\fR to \fB\-e#\fR (inclusive)
.
.TP
\fB\-i#\fR
minimum evaluation time, in seconds (default: 3s), benchmark mode only
.
.TP
\fB\-B#\fR, \fB\-\-block\-size=#\fR
cut file(s) into independent blocks of size # (default: no block)
.
.TP
\fB\-\-priority=rt\fR
set process priority to real\-time
.
.P
\fBOutput Format:\fR CompressionLevel#Filename : IntputSize \-> OutputSize (CompressionRatio), CompressionSpeed, DecompressionSpeed
.
.P
\fBMethodology:\fR For both compression and decompression speed, the entire input is compressed/decompressed in\-memory to measure speed\. A run lasts at least 1 sec, so when files are small, they are compressed/decompressed several times per run, in order to improve measurement accuracy\.
.
.SH "ADVANCED COMPRESSION OPTIONS"
.
.SS "\-B#:"
Select the size of each compression job\. This parameter is only available when multi\-threading is enabled\. Each compression job is run in parallel, so this value indirectly impacts the nb of active threads\. Default job size varies depending on compression level (generally \fB4 * windowSize\fR)\. \fB\-B#\fR makes it possible to manually select a custom size\. Note that job size must respect a minimum value which is enforced transparently\. This minimum is either 512 KB, or \fBoverlapSize\fR, whichever is largest\. Different job sizes will lead to (slightly) different compressed frames\.
.
### \-B#: Select the size of each compression job\. This parameter is only available when multi\-threading is enabled\. Each compression job is run in parallel, so this value indirectly impacts the nb of active threads\. Default job size varies depending on compression level (generally \fB4 * windowSize\fR)\. \fB\-B#\fR makes it possible to manually select a custom size\. Note that job size must respect a minimum value which is enforced transparently\. This minimum is either 512 KB, or \fBoverlapSize\fR, whichever is largest\. Different job sizes will lead to (slightly) different compressed frames\.
.SS "\-\-zstd[=options]:"
\fBzstd\fR provides 22 predefined compression levels\. The selected or default predefined compression level can be changed with advanced compression options\. The \fIoptions\fR are provided as a comma\-separated list\. You may specify only the options you want to change and the rest will be taken from the selected or default compression level\. The list of available \fIoptions\fR:
.
.TP
\fBstrategy\fR=\fIstrat\fR, \fBstrat\fR=\fIstrat\fR
Specify a strategy used by a match finder\.
.
.IP
There are 9 strategies numbered from 1 to 9, from faster to stronger: 1=ZSTD_fast, 2=ZSTD_dfast, 3=ZSTD_greedy, 4=ZSTD_lazy, 5=ZSTD_lazy2, 6=ZSTD_btlazy2, 7=ZSTD_btopt, 8=ZSTD_btultra, 9=ZSTD_btultra2\.
.
.TP
\fBwindowLog\fR=\fIwlog\fR, \fBwlog\fR=\fIwlog\fR
Specify the maximum number of bits for a match distance\.
.
.IP
The higher number of increases the chance to find a match which usually improves compression ratio\. It also increases memory requirements for the compressor and decompressor\. The minimum \fIwlog\fR is 10 (1 KiB) and the maximum is 30 (1 GiB) on 32\-bit platforms and 31 (2 GiB) on 64\-bit platforms\.
.
.IP
Note: If \fBwindowLog\fR is set to larger than 27, \fB\-\-long=windowLog\fR or \fB\-\-memory=windowSize\fR needs to be passed to the decompressor\.
.
.TP
\fBhashLog\fR=\fIhlog\fR, \fBhlog\fR=\fIhlog\fR
Specify the maximum number of bits for a hash table\.
.
.IP
Bigger hash tables cause less collisions which usually makes compression faster, but requires more memory during compression\.
.
.IP
The minimum \fIhlog\fR is 6 (64 B) and the maximum is 30 (1 GiB)\.
.
.TP
\fBchainLog\fR=\fIclog\fR, \fBclog\fR=\fIclog\fR
Specify the maximum number of bits for a hash chain or a binary tree\.
.
.IP
Higher numbers of bits increases the chance to find a match which usually improves compression ratio\. It also slows down compression speed and increases memory requirements for compression\. This option is ignored for the ZSTD_fast strategy\.
.
.IP
The minimum \fIclog\fR is 6 (64 B) and the maximum is 29 (524 Mib) on 32\-bit platforms and 30 (1 Gib) on 64\-bit platforms\.
.
.TP
\fBsearchLog\fR=\fIslog\fR, \fBslog\fR=\fIslog\fR
Specify the maximum number of searches in a hash chain or a binary tree using logarithmic scale\.
.
.IP
More searches increases the chance to find a match which usually increases compression ratio but decreases compression speed\.
.
.IP
The minimum \fIslog\fR is 1 and the maximum is \'windowLog\' \- 1\.
.
.TP
\fBminMatch\fR=\fImml\fR, \fBmml\fR=\fImml\fR
Specify the minimum searched length of a match in a hash table\.
.
.IP
Larger search lengths usually decrease compression ratio but improve decompression speed\.
.
.IP
The minimum \fImml\fR is 3 and the maximum is 7\.
.
.TP
\fBtargetLength\fR=\fItlen\fR, \fBtlen\fR=\fItlen\fR
The impact of this field vary depending on selected strategy\.
.
.IP
For ZSTD_btopt, ZSTD_btultra and ZSTD_btultra2, it specifies the minimum match length that causes match finder to stop searching\. A larger \fBtargetLength\fR usually improves compression ratio but decreases compression speed\. t For ZSTD_fast, it triggers ultra\-fast mode when > 0\. The value represents the amount of data skipped between match sampling\. Impact is reversed : a larger \fBtargetLength\fR increases compression speed but decreases compression ratio\.
.
.IP
For all other strategies, this field has no impact\.
.
.IP
The minimum \fItlen\fR is 0 and the maximum is 128 Kib\.
.
.TP
\fBoverlapLog\fR=\fIovlog\fR, \fBovlog\fR=\fIovlog\fR
Determine \fBoverlapSize\fR, amount of data reloaded from previous job\. This parameter is only available when multithreading is enabled\. Reloading more data improves compression ratio, but decreases speed\.
.
.IP
The minimum \fIovlog\fR is 0, and the maximum is 9\. 1 means "no overlap", hence completely independent jobs\. 9 means "full overlap", meaning up to \fBwindowSize\fR is reloaded from previous job\. Reducing \fIovlog\fR by 1 reduces the reloaded amount by a factor 2\. For example, 8 means "windowSize/2", and 6 means "windowSize/8"\. Value 0 is special and means "default" : \fIovlog\fR is automatically determined by \fBzstd\fR\. In which case, \fIovlog\fR will range from 6 to 9, depending on selected \fIstrat\fR\.
.
.TP
\fBldmHashLog\fR=\fIlhlog\fR, \fBlhlog\fR=\fIlhlog\fR
Specify the maximum size for a hash table used for long distance matching\.
.
.IP
This option is ignored unless long distance matching is enabled\.
.
.IP
Bigger hash tables usually improve compression ratio at the expense of more memory during compression and a decrease in compression speed\.
.
.IP
The minimum \fIlhlog\fR is 6 and the maximum is 30 (default: 20)\.
.
.TP
\fBldmMinMatch\fR=\fIlmml\fR, \fBlmml\fR=\fIlmml\fR
Specify the minimum searched length of a match for long distance matching\.
.
.IP
This option is ignored unless long distance matching is enabled\.
.
.IP
Larger/very small values usually decrease compression ratio\.
.
.IP
The minimum \fIlmml\fR is 4 and the maximum is 4096 (default: 64)\.
.
.TP
\fBldmBucketSizeLog\fR=\fIlblog\fR, \fBlblog\fR=\fIlblog\fR
Specify the size of each bucket for the hash table used for long distance matching\.
.
.IP
This option is ignored unless long distance matching is enabled\.
.
.IP
Larger bucket sizes improve collision resolution but decrease compression speed\.
.
.IP
The minimum \fIlblog\fR is 1 and the maximum is 8 (default: 3)\.
.
.TP
\fBldmHashRateLog\fR=\fIlhrlog\fR, \fBlhrlog\fR=\fIlhrlog\fR
Specify the frequency of inserting entries into the long distance matching hash table\.
.
.IP
This option is ignored unless long distance matching is enabled\.
.
.IP
Larger values will improve compression speed\. Deviating far from the default value will likely result in a decrease in compression ratio\.
.
.IP
The default value is \fBwlog \- lhlog\fR\.
.
.SS "Example"
The following parameters sets advanced compression options to something similar to predefined level 19 for files bigger than 256 KB:
.
.P
\fB\-\-zstd\fR=wlog=23,clog=23,hlog=22,slog=6,mml=3,tlen=48,strat=6
.
.SH "BUGS"
Report bugs at: https://github\.com/facebook/zstd/issues
.
.SH "AUTHOR"
Yann Collet
programs/zstd.1.md
+24 -9
View File
@@ -125,6 +125,9 @@ the last one takes effect.
This mode is the only one available when multithread support is disabled.
Single-thread mode features lower memory usage.
Final compressed result is slightly different from `-T1`.
* `--auto-threads={physical,logical} (default: physical)`:
When using a default amount of threads via `-T0`, choose the default based on the number
of detected physical or logical cores.
* `--adapt[=min=#,max=#]` :
`zstd` will dynamically adapt compression level to perceived I/O conditions.
Compression level adaptation can be observed live by using command `-v`.
@@ -168,7 +171,7 @@ the last one takes effect.
compression speed hit.
This feature does not work with `--single-thread`. You probably don't want
to use it with long range mode, since it will decrease the effectiveness of
the synchronization points, but your milage may vary.
the synchronization points, but your mileage may vary.
* `-C`, `--[no-]check`:
add integrity check computed from uncompressed data (default: enabled)
* `--[no-]content-size`:
@@ -187,6 +190,10 @@ the last one takes effect.
This is also used during compression when using with --patch-from=. In this case,
this parameter overrides that maximum size allowed for a dictionary. (128 MB).
Additionally, this can be used to limit memory for dictionary training. This parameter
overrides the default limit of 2 GB. zstd will load training samples up to the memory limit
and ignore the rest.
* `--stream-size=#` :
Sets the pledged source size of input coming from a stream. This value must be exact, as it
will be included in the produced frame header. Incorrect stream sizes will cause an error.
@@ -205,7 +212,7 @@ the last one takes effect.
disable input and output checks. Allows overwriting existing files, input
from console, output to stdout, operating on links, block devices, etc.
* `-c`, `--stdout`:
force write to standard output, even if it is the console
write to standard output (even if it is the console)
* `--[no-]sparse`:
enable / disable sparse FS support,
to make files with many zeroes smaller on disk.
@@ -221,7 +228,11 @@ the last one takes effect.
keep source file(s) after successful compression or decompression.
This is the default behavior.
* `-r`:
operate recursively on directories
operate recursively on directories.
It selects all files in the named directory and all its subdirectories.
This can be useful both to reduce command line typing,
and to circumvent shell expansion limitations,
when there are a lot of files and naming breaks the maximum size of a command line.
* `--filelist FILE`
read a list of files to process as content from `FILE`.
Format is compatible with `ls` output, with one file per line.
@@ -304,12 +315,14 @@ Compression of small files similar to the sample set will be greatly improved.
The training set should contain a lot of small files (> 100),
and weight typically 100x the target dictionary size
(for example, 10 MB for a 100 KB dictionary).
`--train` can be combined with `-r` to indicate a directory rather than listing all the files,
which can be useful to circumvent shell expansion limits.
Supports multithreading if `zstd` is compiled with threading support.
`--train` supports multithreading if `zstd` is compiled with threading support (default).
Additional parameters can be specified with `--train-fastcover`.
The legacy dictionary builder can be accessed with `--train-legacy`.
The cover dictionary builder can be accessed with `--train-cover`.
Equivalent to `--train-fastcover=d=8,steps=4`.
The slower cover dictionary builder can be accessed with `--train-cover`.
Default is equivalent to `--train-fastcover=d=8,steps=4`.
* `-o file`:
Dictionary saved into `file` (default name: dictionary).
* `--maxdict=#`:
@@ -319,10 +332,12 @@ Compression of small files similar to the sample set will be greatly improved.
Will generate statistics more tuned for selected compression level,
resulting in a _small_ compression ratio improvement for this level.
* `-B#`:
Split input files in blocks of size # (default: no split)
Split input files into blocks of size # (default: no split)
* `-M#`, `--memory=#`:
Limit the amount of sample data loaded for training (default: 2 GB). See above for details.
* `--dictID=#`:
A dictionary ID is a locally unique ID that a decoder can use to verify it is
using the right dictionary.
A dictionary ID is a locally unique ID
that a decoder can use to verify it is using the right dictionary.
By default, zstd will create a 4-bytes random number ID.
It's possible to give a precise number instead.
Short numbers have an advantage : an ID < 256 will only need 1 byte in the
programs/zstdcli.c
+100 -33
View File
@@ -163,7 +163,7 @@ static void usage_advanced(const char* programName)
DISPLAYOUT( "Advanced arguments : \n");
DISPLAYOUT( " -V : display Version number and exit \n");
DISPLAYOUT( " -c : force write to standard output, even if it is the console \n");
DISPLAYOUT( " -c : write to standard output (even if it is the console) \n");
DISPLAYOUT( " -v : verbose mode; specify multiple times to increase verbosity \n");
DISPLAYOUT( " -q : suppress warnings; specify twice to suppress errors too \n");
@@ -208,10 +208,12 @@ static void usage_advanced(const char* programName)
DISPLAYOUT( "--fast[=#]: switch to very fast compression levels (default: %u) \n", 1);
DISPLAYOUT( "--adapt : dynamically adapt compression level to I/O conditions \n");
DISPLAYOUT( "--[no-]row-match-finder : force enable/disable usage of fast row-based matchfinder for greedy, lazy, and lazy2 strategies \n");
DISPLAYOUT( "--patch-from=FILE : specify the file to be used as a reference point for zstd's diff engine. \n");
# ifdef ZSTD_MULTITHREAD
DISPLAYOUT( " -T# : spawns # compression threads (default: 1, 0==# cores) \n");
DISPLAYOUT( " -B# : select size of each job (default: 0==automatic) \n");
DISPLAYOUT( "--single-thread : use a single thread for both I/O and compression (result slightly different than -T1) \n");
DISPLAYOUT( "--auto-threads={physical,logical} (default: physical} : use either physical cores or logical cores as default when specifying -T0 \n");
DISPLAYOUT( "--rsyncable : compress using a rsync-friendly method (-B sets block size) \n");
# endif
DISPLAYOUT( "--exclude-compressed: only compress files that are not already compressed \n");
@@ -353,6 +355,23 @@ static unsigned readU32FromChar(const char** stringPtr) {
return result;
}
/*! readIntFromChar() :
* @return : signed integer value read from input in `char` format.
* allows and interprets K, KB, KiB, M, MB and MiB suffix.
* Will also modify `*stringPtr`, advancing it to position where it stopped reading.
* Note : function will exit() program if digit sequence overflows */
static int readIntFromChar(const char** stringPtr) {
static const char errorMsg[] = "error: numeric value overflows 32-bit int";
int sign = 1;
unsigned result;
if (**stringPtr=='-') {
(*stringPtr)++;
sign = -1;
}
if (readU32FromCharChecked(stringPtr, &result)) { errorOut(errorMsg); }
return (int) result * sign;
}
/*! readSizeTFromCharChecked() :
* @return 0 if success, and store the result in *value.
* allows and interprets K, KB, KiB, M, MB and MiB suffix.
@@ -546,8 +565,8 @@ static ZDICT_fastCover_params_t defaultFastCoverParams(void)
static unsigned parseAdaptParameters(const char* stringPtr, int* adaptMinPtr, int* adaptMaxPtr)
{
for ( ; ;) {
if (longCommandWArg(&stringPtr, "min=")) { *adaptMinPtr = (int)readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "max=")) { *adaptMaxPtr = (int)readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "min=")) { *adaptMinPtr = readIntFromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "max=")) { *adaptMaxPtr = readIntFromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
DISPLAYLEVEL(4, "invalid compression parameter \n");
return 0;
}
@@ -628,6 +647,48 @@ static void printVersion(void)
} }
}
#define ZSTD_NB_STRATEGIES 9
static const char* ZSTD_strategyMap[ZSTD_NB_STRATEGIES + 1] = { "", "ZSTD_fast",
"ZSTD_dfast", "ZSTD_greedy", "ZSTD_lazy", "ZSTD_lazy2", "ZSTD_btlazy2",
"ZSTD_btopt", "ZSTD_btultra", "ZSTD_btultra2"};
#ifndef ZSTD_NOCOMPRESS
static void printDefaultCParams(const char* filename, const char* dictFileName, int cLevel) {
unsigned long long fileSize = UTIL_getFileSize(filename);
const size_t dictSize = dictFileName != NULL ? (size_t)UTIL_getFileSize(dictFileName) : 0;
const ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, fileSize, dictSize);
if (fileSize != UTIL_FILESIZE_UNKNOWN) DISPLAY("%s (%u bytes)\n", filename, (unsigned)fileSize);
else DISPLAY("%s (src size unknown)\n", filename);
DISPLAY(" - windowLog : %u\n", cParams.windowLog);
DISPLAY(" - chainLog : %u\n", cParams.chainLog);
DISPLAY(" - hashLog : %u\n", cParams.hashLog);
DISPLAY(" - searchLog : %u\n", cParams.searchLog);
DISPLAY(" - minMatch : %u\n", cParams.minMatch);
DISPLAY(" - targetLength : %u\n", cParams.targetLength);
assert(cParams.strategy < ZSTD_NB_STRATEGIES + 1);
DISPLAY(" - strategy : %s (%u)\n", ZSTD_strategyMap[(int)cParams.strategy], (unsigned)cParams.strategy);
}
static void printActualCParams(const char* filename, const char* dictFileName, int cLevel, const ZSTD_compressionParameters* cParams) {
unsigned long long fileSize = UTIL_getFileSize(filename);
const size_t dictSize = dictFileName != NULL ? (size_t)UTIL_getFileSize(dictFileName) : 0;
ZSTD_compressionParameters actualCParams = ZSTD_getCParams(cLevel, fileSize, dictSize);
assert(g_displayLevel >= 4);
actualCParams.windowLog = cParams->windowLog == 0 ? actualCParams.windowLog : cParams->windowLog;
actualCParams.chainLog = cParams->chainLog == 0 ? actualCParams.chainLog : cParams->chainLog;
actualCParams.hashLog = cParams->hashLog == 0 ? actualCParams.hashLog : cParams->hashLog;
actualCParams.searchLog = cParams->searchLog == 0 ? actualCParams.searchLog : cParams->searchLog;
actualCParams.minMatch = cParams->minMatch == 0 ? actualCParams.minMatch : cParams->minMatch;
actualCParams.targetLength = cParams->targetLength == 0 ? actualCParams.targetLength : cParams->targetLength;
actualCParams.strategy = cParams->strategy == 0 ? actualCParams.strategy : cParams->strategy;
DISPLAY("--zstd=wlog=%d,clog=%d,hlog=%d,slog=%d,mml=%d,tlen=%d,strat=%d\n",
actualCParams.windowLog, actualCParams.chainLog, actualCParams.hashLog, actualCParams.searchLog,
actualCParams.minMatch, actualCParams.targetLength, actualCParams.strategy);
}
#endif
/* Environment variables for parameter setting */
#define ENV_CLEVEL "ZSTD_CLEVEL"
#define ENV_NBTHREADS "ZSTD_NBTHREADS" /* takes lower precedence than directly specifying -T# in the CLI */
@@ -704,11 +765,6 @@ static unsigned init_nbThreads(void) {
val32 = readU32FromChar(&__nb); \
}
#define ZSTD_NB_STRATEGIES 9
static const char* ZSTD_strategyMap[ZSTD_NB_STRATEGIES + 1] = { "", "ZSTD_fast",
"ZSTD_dfast", "ZSTD_greedy", "ZSTD_lazy", "ZSTD_lazy2", "ZSTD_btlazy2",
"ZSTD_btopt", "ZSTD_btultra", "ZSTD_btultra2"};
typedef enum { zom_compress, zom_decompress, zom_test, zom_bench, zom_train, zom_list } zstd_operation_mode;
#define CLEAN_RETURN(i) { operationResult = (i); goto _end; }
@@ -722,7 +778,7 @@ typedef enum { zom_compress, zom_decompress, zom_test, zom_bench, zom_train, zom
# define MAXCLEVEL ZSTD_maxCLevel()
#endif
int main(int const argCount, const char* argv[])
int main(int argCount, const char* argv[])
{
int argNb,
followLinks = 0,
@@ -743,6 +799,9 @@ int main(int const argCount, const char* argv[])
separateFiles = 0,
setRealTimePrio = 0,
singleThread = 0,
#ifdef ZSTD_MULTITHREAD
defaultLogicalCores = 0,
#endif
showDefaultCParams = 0,
ultra=0,
contentSize=1;
@@ -782,7 +841,7 @@ int main(int const argCount, const char* argv[])
#ifndef ZSTD_NOBENCH
BMK_advancedParams_t benchParams = BMK_initAdvancedParams();
#endif
ZSTD_literalCompressionMode_e literalCompressionMode = ZSTD_lcm_auto;
ZSTD_paramSwitch_e literalCompressionMode = ZSTD_ps_auto;
/* init */
@@ -878,8 +937,8 @@ int main(int const argCount, const char* argv[])
if (!strcmp(argument, "--format=lz4")) { suffix = LZ4_EXTENSION; FIO_setCompressionType(prefs, FIO_lz4Compression); continue; }
#endif
if (!strcmp(argument, "--rsyncable")) { rsyncable = 1; continue; }
if (!strcmp(argument, "--compress-literals")) { literalCompressionMode = ZSTD_lcm_huffman; continue; }
if (!strcmp(argument, "--no-compress-literals")) { literalCompressionMode = ZSTD_lcm_uncompressed; continue; }
if (!strcmp(argument, "--compress-literals")) { literalCompressionMode = ZSTD_ps_enable; continue; }
if (!strcmp(argument, "--no-compress-literals")) { literalCompressionMode = ZSTD_ps_disable; continue; }
if (!strcmp(argument, "--no-progress")) { FIO_setProgressSetting(FIO_ps_never); continue; }
if (!strcmp(argument, "--progress")) { FIO_setProgressSetting(FIO_ps_always); continue; }
if (!strcmp(argument, "--exclude-compressed")) { FIO_setExcludeCompressedFile(prefs, 1); continue; }
@@ -932,6 +991,15 @@ int main(int const argCount, const char* argv[])
if (longCommandWArg(&argument, "--target-compressed-block-size=")) { targetCBlockSize = readSizeTFromChar(&argument); continue; }
if (longCommandWArg(&argument, "--size-hint=")) { srcSizeHint = readSizeTFromChar(&argument); continue; }
if (longCommandWArg(&argument, "--output-dir-flat")) { NEXT_FIELD(outDirName); continue; }
#ifdef ZSTD_MULTITHREAD
if (longCommandWArg(&argument, "--auto-threads")) {
const char* threadDefault = NULL;
NEXT_FIELD(threadDefault);
if (strcmp(threadDefault, "logical") == 0)
defaultLogicalCores = 1;
continue;
}
#endif
#ifdef UTIL_HAS_MIRRORFILELIST
if (longCommandWArg(&argument, "--output-dir-mirror")) { NEXT_FIELD(outMirroredDirName); continue; }
#endif
@@ -1138,15 +1206,21 @@ int main(int const argCount, const char* argv[])
#ifdef ZSTD_MULTITHREAD
if ((nbWorkers==0) && (!singleThread)) {
/* automatically set # workers based on # of reported cpus */
nbWorkers = UTIL_countPhysicalCores();
DISPLAYLEVEL(3, "Note: %d physical core(s) detected \n", nbWorkers);
if (defaultLogicalCores) {
nbWorkers = UTIL_countLogicalCores();
DISPLAYLEVEL(3, "Note: %d logical core(s) detected \n", nbWorkers);
} else {
nbWorkers = UTIL_countPhysicalCores();
DISPLAYLEVEL(3, "Note: %d physical core(s) detected \n", nbWorkers);
}
}
#else
(void)singleThread; (void)nbWorkers;
#endif
#ifdef UTIL_HAS_CREATEFILELIST
g_utilDisplayLevel = g_displayLevel;
#ifdef UTIL_HAS_CREATEFILELIST
if (!followLinks) {
unsigned u, fileNamesNb;
unsigned const nbFilenames = (unsigned)filenames->tableSize;
@@ -1253,18 +1327,18 @@ int main(int const argCount, const char* argv[])
int const optimize = !coverParams.k || !coverParams.d;
coverParams.nbThreads = (unsigned)nbWorkers;
coverParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (unsigned)filenames->tableSize, blockSize, NULL, &coverParams, NULL, optimize);
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (int)filenames->tableSize, blockSize, NULL, &coverParams, NULL, optimize, memLimit);
} else if (dict == fastCover) {
int const optimize = !fastCoverParams.k || !fastCoverParams.d;
fastCoverParams.nbThreads = (unsigned)nbWorkers;
fastCoverParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (unsigned)filenames->tableSize, blockSize, NULL, NULL, &fastCoverParams, optimize);
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (int)filenames->tableSize, blockSize, NULL, NULL, &fastCoverParams, optimize, memLimit);
} else {
ZDICT_legacy_params_t dictParams;
memset(&dictParams, 0, sizeof(dictParams));
dictParams.selectivityLevel = dictSelect;
dictParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (unsigned)filenames->tableSize, blockSize, &dictParams, NULL, NULL, 0);
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenames->fileNames, (int)filenames->tableSize, blockSize, &dictParams, NULL, NULL, 0, memLimit);
}
#else
(void)dictCLevel; (void)dictSelect; (void)dictID; (void)maxDictSize; /* not used when ZSTD_NODICT set */
@@ -1328,7 +1402,7 @@ int main(int const argCount, const char* argv[])
/* No status message in pipe mode (stdin - stdout) */
hasStdout = outFileName && !strcmp(outFileName,stdoutmark);
if (hasStdout && (g_displayLevel==2)) g_displayLevel=1;
if ((hasStdout || !IS_CONSOLE(stderr)) && (g_displayLevel==2)) g_displayLevel=1;
/* IO Stream/File */
FIO_setHasStdoutOutput(fCtx, hasStdout);
@@ -1374,25 +1448,18 @@ int main(int const argCount, const char* argv[])
assert(ZSTD_NB_STRATEGIES == strategyBounds.upperBound);
(void)strategyBounds; }
if (showDefaultCParams) {
if (showDefaultCParams || g_displayLevel >= 4) {
size_t fileNb;
for (fileNb = 0; fileNb < (size_t)filenames->tableSize; fileNb++) {
unsigned long long fileSize = UTIL_getFileSize(filenames->fileNames[fileNb]);
const size_t dictSize = dictFileName != NULL ? (size_t)UTIL_getFileSize(dictFileName) : 0;
const ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, fileSize, dictSize);
if (fileSize != UTIL_FILESIZE_UNKNOWN) DISPLAY("%s (%u bytes)\n", filenames->fileNames[fileNb], (unsigned)fileSize);
else DISPLAY("%s (src size unknown)\n", filenames->fileNames[fileNb]);
DISPLAY(" - windowLog : %u\n", cParams.windowLog);
DISPLAY(" - chainLog : %u\n", cParams.chainLog);
DISPLAY(" - hashLog : %u\n", cParams.hashLog);
DISPLAY(" - searchLog : %u\n", cParams.searchLog);
DISPLAY(" - minMatch : %u\n", cParams.minMatch);
DISPLAY(" - targetLength : %u\n", cParams.targetLength);
assert(cParams.strategy < ZSTD_NB_STRATEGIES + 1);
DISPLAY(" - strategy : %s (%u)\n", ZSTD_strategyMap[(int)cParams.strategy], (unsigned)cParams.strategy);
if (showDefaultCParams)
printDefaultCParams(filenames->fileNames[fileNb], dictFileName, cLevel);
if (g_displayLevel >= 4)
printActualCParams(filenames->fileNames[fileNb], dictFileName, cLevel, &compressionParams);
}
}
if (g_displayLevel >= 4)
FIO_displayCompressionParameters(prefs);
if ((filenames->tableSize==1) && outFileName)
operationResult = FIO_compressFilename(fCtx, prefs, outFileName, filenames->fileNames[0], dictFileName, cLevel, compressionParams);
else
programs/zstdgrep.1
+5 -11
View File
@@ -1,23 +1,17 @@
.
.TH "ZSTDGREP" "1" "May 2021" "zstd 1.5.0" "User Commands"
.
.TH "ZSTDGREP" "1" "September 2021" "zstd 1.5.1" "User Commands"
.SH "NAME"
\fBzstdgrep\fR \- print lines matching a pattern in zstandard\-compressed files
.
.SH "SYNOPSIS"
\fBzstdgrep\fR [\fIgrep\-flags\fR] [\-\-] \fIpattern\fR [\fIfiles\fR \.\.\.]
.
\fBzstdgrep\fR [\fIgrep\-flags\fR] [\-\-] \fIpattern\fR [\fIfiles\fR \|\.\|\.\|\.]
.SH "DESCRIPTION"
\fBzstdgrep\fR runs \fBgrep (1)\fR on files or stdin, if no files argument is given, after decompressing them with \fBzstdcat (1)\fR\.
.
\fBzstdgrep\fR runs \fBgrep (1)\fR on files, or \fBstdin\fR if no files argument is given, after decompressing them with \fBzstdcat (1)\fR\.
.P
The grep\-flags and pattern arguments are passed on to \fBgrep (1)\fR\. If an \fB\-e\fR flag is found in the \fBgrep\-flags\fR, \fBzstdgrep\fR will not look for a pattern argument\.
.
.P
Note that modern \fBgrep\fR alternatives such as \fBripgrep\fR (\fBrg\fR) support \fBzstd\fR\-compressed files out of the box, and can prove better alternatives than \fBzstdgrep\fR notably for unsupported complex pattern searches\. Note though that such alternatives may also feature some minor command line differences\.
.SH "EXIT STATUS"
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0\.
.
.SH "SEE ALSO"
\fBzstd (1)\fR
.
.SH "AUTHORS"
Thomas Klausner \fIwiz@NetBSD\.org\fR
programs/zstdgrep.1.md
+5 -1
View File
@@ -9,10 +9,14 @@ SYNOPSIS
DESCRIPTION
-----------
`zstdgrep` runs `grep (1)` on files or stdin, if no files argument is given, after decompressing them with `zstdcat (1)`.
`zstdgrep` runs `grep (1)` on files, or `stdin` if no files argument is given, after decompressing them with `zstdcat (1)`.
The grep-flags and pattern arguments are passed on to `grep (1)`. If an `-e` flag is found in the `grep-flags`, `zstdgrep` will not look for a pattern argument.
Note that modern `grep` alternatives such as `ripgrep` (`rg`) support `zstd`-compressed files out of the box,
and can prove better alternatives than `zstdgrep` notably for unsupported complex pattern searches.
Note though that such alternatives may also feature some minor command line differences.
EXIT STATUS
-----------
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.
programs/zstdless.1
+2 -7
View File
@@ -1,14 +1,9 @@
.
.TH "ZSTDLESS" "1" "May 2021" "zstd 1.5.0" "User Commands"
.
.TH "ZSTDLESS" "1" "September 2021" "zstd 1.5.1" "User Commands"
.SH "NAME"
\fBzstdless\fR \- view zstandard\-compressed files
.
.SH "SYNOPSIS"
\fBzstdless\fR [\fIflags\fR] [\fIfile\fR \.\.\.]
.
\fBzstdless\fR [\fIflags\fR] [\fIfile\fR \|\.\|\.\|\.]
.SH "DESCRIPTION"
\fBzstdless\fR runs \fBless (1)\fR on files or stdin, if no files argument is given, after decompressing them with \fBzstdcat (1)\fR\.
.
.SH "SEE ALSO"
\fBzstd (1)\fR
tests/Makefile
+31 -28
View File
@@ -1,4 +1,5 @@
# ################################################################
# ################################################################
# Copyright (c) Yann Collet, Facebook, Inc.
# All rights reserved.
#
@@ -19,46 +20,43 @@
# zstreamtest32: Same as zstreamtest, but forced to compile in 32-bits mode
# ##########################################################################
ZSTDDIR = ../lib
LIBZSTD = ../lib
ZSTD_LEGACY_SUPPORT ?= 0
DEBUGLEVEL ?= 2
export DEBUGLEVEL # transmit value to sub-makefiles
include $(LIBZSTD)/libzstd.mk
ZSTDDIR = $(LIBZSTD)
PRGDIR = ../programs
PYTHON ?= python3
TESTARTEFACT := versionsTest
DEBUGLEVEL ?= 2
export DEBUGLEVEL # transmit value to sub-makefiles
DEBUGFLAGS = -g -DDEBUGLEVEL=$(DEBUGLEVEL)
DEBUGFLAGS += -g -Wno-c++-compat
CPPFLAGS += -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/compress \
-I$(ZSTDDIR)/dictBuilder -I$(ZSTDDIR)/deprecated -I$(PRGDIR) \
-DZSTD_WINDOW_OVERFLOW_CORRECT_FREQUENTLY=1
ifeq ($(OS),Windows_NT) # MinGW assumed
CPPFLAGS += -D__USE_MINGW_ANSI_STDIO # compatibility with %zu formatting
endif
CFLAGS ?= -O3
CFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls -Wmissing-prototypes -Wno-deprecated-declarations
CFLAGS += $(DEBUGFLAGS)
CPPFLAGS += $(MOREFLAGS)
ZSTDCOMMON_FILES := $(ZSTDDIR)/common/*.c
ZSTDCOMP_FILES := $(ZSTDDIR)/compress/*.c
ZSTDDECOMP_FILES := $(ZSTDDIR)/decompress/*.c
ZSTDCOMMON_FILES := $(sort $(ZSTD_COMMON_FILES))
ZSTDCOMP_FILES := $(sort $(ZSTD_COMPRESS_FILES))
ZSTDDECOMP_FILES := $(sort $(ZSTD_DECOMPRESS_FILES))
ZSTD_FILES := $(ZSTDDECOMP_FILES) $(ZSTDCOMMON_FILES) $(ZSTDCOMP_FILES)
ZDICT_FILES := $(ZSTDDIR)/dictBuilder/*.c
ZDICT_FILES := $(sort $(ZSTD_DICTBUILDER_FILES))
ZSTD_F1 := $(wildcard $(ZSTD_FILES))
ZSTD_F1 := $(sort $(wildcard $(ZSTD_FILES)))
ZSTD_OBJ1 := $(subst $(ZSTDDIR)/common/,zstdm_,$(ZSTD_F1))
ZSTD_OBJ2 := $(subst $(ZSTDDIR)/compress/,zstdc_,$(ZSTD_OBJ1))
ZSTD_OBJ3 := $(subst $(ZSTDDIR)/decompress/,zstdd_,$(ZSTD_OBJ2))
ZSTD_OBJECTS := $(ZSTD_OBJ3:.c=.o)
ZSTD_OBJ4 := $(ZSTD_OBJ3:.c=.o)
ZSTD_OBJECTS := $(ZSTD_OBJ4:.S=.o)
ZSTDMT_OBJ1 := $(subst $(ZSTDDIR)/common/,zstdmt_m_,$(ZSTD_F1))
ZSTDMT_OBJ2 := $(subst $(ZSTDDIR)/compress/,zstdmt_c_,$(ZSTDMT_OBJ1))
ZSTDMT_OBJ3 := $(subst $(ZSTDDIR)/decompress/,zstdmt_d_,$(ZSTDMT_OBJ2))
ZSTDMT_OBJECTS := $(ZSTDMT_OBJ3:.c=.o)
ZSTDMT_OBJ4 := $(ZSTDMT_OBJ3:.c=.o)
ZSTDMT_OBJECTS := $(ZSTDMT_OBJ4:.S=.o)
# Define *.exe as extension for Windows systems
ifneq (,$(filter Windows%,$(OS)))
@@ -119,6 +117,9 @@ zstdc_%.o : $(ZSTDDIR)/compress/%.c
zstdd_%.o : $(ZSTDDIR)/decompress/%.c
$(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
zstdd_%.o : $(ZSTDDIR)/decompress/%.S
$(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
zstdmt%.o : CPPFLAGS += $(MULTITHREAD_CPP)
zstdmt_m_%.o : $(ZSTDDIR)/common/%.c
@@ -130,6 +131,9 @@ zstdmt_c_%.o : $(ZSTDDIR)/compress/%.c
zstdmt_d_%.o : $(ZSTDDIR)/decompress/%.c
$(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
zstdmt_d_%.o : $(ZSTDDIR)/decompress/%.S
$(CC) -c $(CPPFLAGS) $(CFLAGS) $< -o $@
fullbench32: CPPFLAGS += -m32
fullbench fullbench32 : CPPFLAGS += $(MULTITHREAD_CPP) -Wno-deprecated-declarations
fullbench fullbench32 : LDFLAGS += $(MULTITHREAD_LD)
@@ -201,8 +205,8 @@ bigdict: $(ZSTDMT_OBJECTS) $(PRGDIR)/datagen.c bigdict.c
invalidDictionaries : $(ZSTD_OBJECTS) invalidDictionaries.c
legacy : CPPFLAGS += -I$(ZSTDDIR)/legacy -DZSTD_LEGACY_SUPPORT=4
legacy : $(ZSTD_FILES) $(wildcard $(ZSTDDIR)/legacy/*.c) legacy.c
legacy : CPPFLAGS += -I$(ZSTDDIR)/legacy -UZSTD_LEGACY_SUPPORT -DZSTD_LEGACY_SUPPORT=4
legacy : $(ZSTD_FILES) $(sort $(wildcard $(ZSTDDIR)/legacy/*.c)) legacy.c
decodecorpus : LDLIBS += -lm
decodecorpus : $(filter-out zstdc_zstd_compress.o, $(ZSTD_OBJECTS)) $(ZDICT_FILES) $(PRGDIR)/util.c $(PRGDIR)/timefn.c decodecorpus.c
@@ -244,7 +248,7 @@ clean:
# valgrind tests are validated only for some posix platforms
#----------------------------------------------------------------------------------
UNAME := $(shell uname)
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS))
ifneq (,$(filter $(UNAME),Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS AIX))
HOST_OS = POSIX
valgrindTest: VALGRIND = valgrind --leak-check=full --show-leak-kinds=all --error-exitcode=1
@@ -263,7 +267,6 @@ valgrindTest: zstd datagen fuzzer fullbench
endif
ifneq (,$(filter MINGW% MSYS%,$(UNAME)))
HOST_OS = MSYS
endif
tests/README.md
+1 -1
View File
@@ -56,7 +56,7 @@ optional arguments:
--mode MODE 'fastmode', 'onetime', 'current', or 'continuous' (see
README.md for details)
--dict DICT filename of dictionary to use (when set, this
dictioanry will be used to compress the files provided
dictionary will be used to compress the files provided
inside --directory)
```
tests/automated_benchmarking.py
+6 -6
View File
@@ -87,7 +87,7 @@ def clone_and_build(build):
git clone {github_url} zstd-{user}-{sha} &&
cd zstd-{user}-{sha} &&
{checkout_command}
make &&
make -j &&
cd ../
""".format(
user=build["user"],
@@ -100,7 +100,7 @@ def clone_and_build(build):
)
return "zstd-{user}-{sha}/zstd".format(user=build["user"], sha=build["hash"])
else:
os.system("cd ../ && make && cd tests")
os.system("cd ../ && make -j && cd tests")
return "../zstd"
@@ -112,9 +112,9 @@ def parse_benchmark_output(output):
def benchmark_single(executable, level, filename):
return parse_benchmark_output((
subprocess.run(
[executable, "-qb{}".format(level), filename], stderr=subprocess.PIPE
[executable, "-qb{}".format(level), filename], stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
)
.stderr.decode("utf-8")
.stdout.decode("utf-8")
.split(" ")
))
@@ -145,7 +145,7 @@ def benchmark(build, filenames, levels, iterations):
def benchmark_dictionary_single(executable, filenames_directory, dictionary_filename, level, iterations):
cspeeds, dspeeds = [], []
for _ in range(iterations):
output = subprocess.run([executable, "-qb{}".format(level), "-D", dictionary_filename, "-r", filenames_directory], stderr=subprocess.PIPE).stderr.decode("utf-8").split(" ")
output = subprocess.run([executable, "-qb{}".format(level), "-D", dictionary_filename, "-r", filenames_directory], stdout=subprocess.PIPE).stdout.decode("utf-8").split(" ")
cspeed, dspeed = parse_benchmark_output(output)
cspeeds.append(cspeed)
dspeeds.append(dspeed)
@@ -296,7 +296,7 @@ if __name__ == "__main__":
parser.add_argument("--emails", help="email addresses of people who will be alerted upon regression. Only for continuous mode", default=None)
parser.add_argument("--frequency", help="specifies the number of seconds to wait before each successive check for new PRs in continuous mode", default=DEFAULT_MAX_API_CALL_FREQUENCY_SEC)
parser.add_argument("--mode", help="'fastmode', 'onetime', 'current', or 'continuous' (see README.md for details)", default="current")
parser.add_argument("--dict", help="filename of dictionary to use (when set, this dictioanry will be used to compress the files provided inside --directory)", default=None)
parser.add_argument("--dict", help="filename of dictionary to use (when set, this dictionary will be used to compress the files provided inside --directory)", default=None)
args = parser.parse_args()
filenames = args.directory
tests/decodecorpus.c
+2 -2
View File
@@ -185,7 +185,7 @@ BYTE SEQUENCE_LLCODE[ZSTD_BLOCKSIZE_MAX];
BYTE SEQUENCE_MLCODE[ZSTD_BLOCKSIZE_MAX];
BYTE SEQUENCE_OFCODE[ZSTD_BLOCKSIZE_MAX];
unsigned WKSP[HUF_WORKSPACE_SIZE_U32];
U64 WKSP[HUF_WORKSPACE_SIZE_U64];
typedef struct {
size_t contentSize; /* 0 means unknown (unless contentSize == windowSize == 0) */
@@ -199,7 +199,7 @@ typedef struct {
int hufInit;
/* the distribution used in the previous block for repeat mode */
BYTE hufDist[DISTSIZE];
HUF_CElt hufTable [256];
HUF_CElt hufTable [HUF_CTABLE_SIZE_ST(255)];
int fseInit;
FSE_CTable offcodeCTable [FSE_CTABLE_SIZE_U32(OffFSELog, MaxOff)];
tests/fullbench.c
+8 -4
View File
@@ -123,11 +123,15 @@ static size_t local_ZSTD_decompress(const void* src, size_t srcSize,
static ZSTD_DCtx* g_zdc = NULL;
#ifndef ZSTD_DLL_IMPORT
extern size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* ctx, const void* src, size_t srcSize);
typedef enum {
not_streaming = 0,
is_streaming = 1
} streaming_operation;
extern size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* ctx, const void* src, size_t srcSize, void* dst, size_t dstCapacity, const streaming_operation streaming);
static size_t local_ZSTD_decodeLiteralsBlock(const void* src, size_t srcSize, void* dst, size_t dstSize, void* buff2)
{
(void)src; (void)srcSize; (void)dst; (void)dstSize;
return ZSTD_decodeLiteralsBlock(g_zdc, buff2, g_cSize);
return ZSTD_decodeLiteralsBlock(g_zdc, buff2, g_cSize, dst, dstSize, not_streaming);
}
static size_t local_ZSTD_decodeSeqHeaders(const void* src, size_t srcSize, void* dst, size_t dstSize, void* buff2)
@@ -177,7 +181,7 @@ FORCE_NOINLINE size_t ZSTD_decodeLiteralsHeader(ZSTD_DCtx* dctx, void const* src
dctx->entropy.hufTable,
istart+lhSize, litCSize,
dctx->workspace, sizeof(dctx->workspace),
dctx->bmi2);
ZSTD_DCtx_get_bmi2(dctx));
#else
return HUF_readDTableX2_wksp(
dctx->entropy.hufTable,
@@ -577,7 +581,7 @@ static int benchMem(unsigned benchNb,
ip += ZSTD_blockHeaderSize; /* skip block header */
ZSTD_decompressBegin(g_zdc);
CONTROL(iend > ip);
ip += ZSTD_decodeLiteralsBlock(g_zdc, ip, (size_t)(iend-ip)); /* skip literal segment */
ip += ZSTD_decodeLiteralsBlock(g_zdc, ip, (size_t)(iend-ip), dstBuff, dstBuffSize, not_streaming); /* skip literal segment */
g_cSize = (size_t)(iend-ip);
memcpy(dstBuff2, ip, g_cSize); /* copy rest of block (it starts by SeqHeader) */
srcSize = srcSize > 128 KB ? 128 KB : srcSize; /* speed relative to block */
tests/fuzz/.gitignore
+1
View File
@@ -17,6 +17,7 @@ decompress_dstSize_tooSmall
fse_read_ncount
sequence_compression_api
seekable_roundtrip
huf_round_trip
fuzz-*.log
rt_lib_*
d_lib_*
tests/fuzz/Makefile
+32 -10
View File
@@ -23,6 +23,12 @@ else
endif
CORPORA_URL_PREFIX:=https://github.com/facebook/zstd/releases/download/fuzz-corpora/
LIBZSTD = ../../lib
DEBUGLEVEL ?= 2
ZSTD_LEGACY_SUPPORT ?= 1
include $(LIBZSTD)/libzstd.mk
ZSTDDIR = ../../lib
PRGDIR = ../../programs
CONTRIBDIR = ../../contrib
@@ -34,7 +40,7 @@ FUZZ_EXTRA_FLAGS := -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
-Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \
-Wstrict-prototypes -Wundef \
-Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \
-Wredundant-decls \
-Wredundant-decls -Wno-deprecated-declarations \
-g -fno-omit-frame-pointer
FUZZ_CFLAGS := $(FUZZ_EXTRA_FLAGS) $(CFLAGS)
FUZZ_CXXFLAGS := $(FUZZ_EXTRA_FLAGS) -std=c++11 $(CXXFLAGS)
@@ -50,11 +56,11 @@ FUZZ_SRC := $(PRGDIR)/util.c ./fuzz_helpers.c ./zstd_helpers.c ./fuzz_data_produ
SEEKABLE_HEADERS = $(CONTRIBDIR)/seekable_format/zstd_seekable.h
SEEKABLE_OBJS = $(CONTRIBDIR)/seekable_format/zstdseek_compress.c $(CONTRIBDIR)/seekable_format/zstdseek_decompress.c
ZSTDCOMMON_SRC := $(ZSTDDIR)/common/*.c
ZSTDCOMP_SRC := $(ZSTDDIR)/compress/*.c
ZSTDDECOMP_SRC := $(ZSTDDIR)/decompress/*.c
ZSTDDICT_SRC := $(ZSTDDIR)/dictBuilder/*.c
ZSTDLEGACY_SRC := $(ZSTDDIR)/legacy/*.c
ZSTDCOMMON_SRC := $(ZSTD_COMMON_FILES)
ZSTDCOMP_SRC := $(ZSTD_COMPRESS_FILES)
ZSTDDECOMP_SRC := $(ZSTD_DECOMPRESS_FILES)
ZSTDDICT_SRC := $(ZSTD_DICTBUILDER_FILES)
ZSTDLEGACY_SRC := $(ZSTD_LEGACY_FILES)
FUZZ_SRC := \
$(FUZZ_SRC) \
$(ZSTDDECOMP_SRC) \
@@ -62,7 +68,7 @@ FUZZ_SRC := \
$(ZSTDCOMP_SRC) \
$(ZSTDDICT_SRC) \
$(ZSTDLEGACY_SRC)
FUZZ_SRC := $(wildcard $(FUZZ_SRC))
FUZZ_SRC := $(sort $(wildcard $(FUZZ_SRC)))
FUZZ_D_OBJ1 := $(subst $(ZSTDDIR)/common/,d_lib_common_,$(FUZZ_SRC))
FUZZ_D_OBJ2 := $(subst $(ZSTDDIR)/compress/,d_lib_compress_,$(FUZZ_D_OBJ1))
@@ -71,7 +77,8 @@ FUZZ_D_OBJ4 := $(subst $(ZSTDDIR)/dictBuilder/,d_lib_dictBuilder_,$(FUZZ_D_OBJ3)
FUZZ_D_OBJ5 := $(subst $(ZSTDDIR)/legacy/,d_lib_legacy_,$(FUZZ_D_OBJ4))
FUZZ_D_OBJ6 := $(subst $(PRGDIR)/,d_prg_,$(FUZZ_D_OBJ5))
FUZZ_D_OBJ7 := $(subst $\./,d_fuzz_,$(FUZZ_D_OBJ6))
FUZZ_DECOMPRESS_OBJ := $(FUZZ_D_OBJ7:.c=.o)
FUZZ_D_OBJ8 := $(FUZZ_D_OBJ7:.c=.o)
FUZZ_DECOMPRESS_OBJ := $(FUZZ_D_OBJ8:.S=.o)
FUZZ_RT_OBJ1 := $(subst $(ZSTDDIR)/common/,rt_lib_common_,$(FUZZ_SRC))
FUZZ_RT_OBJ2 := $(subst $(ZSTDDIR)/compress/,rt_lib_compress_,$(FUZZ_RT_OBJ1))
@@ -80,7 +87,8 @@ FUZZ_RT_OBJ4 := $(subst $(ZSTDDIR)/dictBuilder/,rt_lib_dictBuilder_,$(FUZZ_RT_OB
FUZZ_RT_OBJ5 := $(subst $(ZSTDDIR)/legacy/,rt_lib_legacy_,$(FUZZ_RT_OBJ4))
FUZZ_RT_OBJ6 := $(subst $(PRGDIR)/,rt_prg_,$(FUZZ_RT_OBJ5))
FUZZ_RT_OBJ7 := $(subst $\./,rt_fuzz_,$(FUZZ_RT_OBJ6))
FUZZ_ROUND_TRIP_OBJ := $(FUZZ_RT_OBJ7:.c=.o)
FUZZ_RT_OBJ8 := $(FUZZ_RT_OBJ7:.c=.o)
FUZZ_ROUND_TRIP_OBJ := $(FUZZ_RT_OBJ8:.S=.o)
.PHONY: default all clean cleanall
@@ -103,7 +111,9 @@ FUZZ_TARGETS := \
decompress_dstSize_tooSmall \
fse_read_ncount \
sequence_compression_api \
seekable_roundtrip
seekable_roundtrip \
huf_round_trip \
huf_decompress
all: libregression.a $(FUZZ_TARGETS)
@@ -116,6 +126,9 @@ rt_lib_compress_%.o: $(ZSTDDIR)/compress/%.c
rt_lib_decompress_%.o: $(ZSTDDIR)/decompress/%.c
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@
rt_lib_decompress_%.o: $(ZSTDDIR)/decompress/%.S
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@
rt_lib_dictBuilder_%.o: $(ZSTDDIR)/dictBuilder/%.c
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $(FUZZ_ROUND_TRIP_FLAGS) $< -c -o $@
@@ -137,6 +150,9 @@ d_lib_compress_%.o: $(ZSTDDIR)/compress/%.c
d_lib_decompress_%.o: $(ZSTDDIR)/decompress/%.c
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@
d_lib_decompress_%.o: $(ZSTDDIR)/decompress/%.S
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@
d_lib_dictBuilder_%.o: $(ZSTDDIR)/dictBuilder/%.c
$(CC) $(FUZZ_CPPFLAGS) $(FUZZ_CFLAGS) $< -c -o $@
@@ -200,6 +216,12 @@ sequence_compression_api: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_sequenc
seekable_roundtrip: $(FUZZ_HEADERS) $(SEEKABLE_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) $(SEEKABLE_OBJS) rt_fuzz_seekable_roundtrip.o
$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) $(SEEKABLE_OBJS) rt_fuzz_seekable_roundtrip.o $(LIB_FUZZING_ENGINE) -o $@
huf_round_trip: $(FUZZ_HEADERS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_huf_round_trip.o
$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_ROUND_TRIP_OBJ) rt_fuzz_huf_round_trip.o $(LIB_FUZZING_ENGINE) -o $@
huf_decompress: $(FUZZ_HEADERS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_huf_decompress.o
$(CXX) $(FUZZ_TARGET_FLAGS) $(FUZZ_DECOMPRESS_OBJ) d_fuzz_huf_decompress.o $(LIB_FUZZING_ENGINE) -o $@
libregression.a: $(FUZZ_HEADERS) $(PRGDIR)/util.h $(PRGDIR)/util.c d_fuzz_regression_driver.o
$(AR) $(FUZZ_ARFLAGS) $@ d_fuzz_regression_driver.o
tests/fuzz/dictionary_round_trip.c
+32 -2
View File
@@ -42,8 +42,23 @@ static size_t roundTripTest(void *result, size_t resultCapacity,
src, srcSize,
dict.buff, dict.size,
cLevel);
FUZZ_ZASSERT(cSize);
// Compress a second time and check for determinism
{
size_t const cSize0 = cSize;
XXH64_hash_t const hash0 = XXH64(compressed, cSize, 0);
cSize = ZSTD_compress_usingDict(cctx,
compressed, compressedCapacity,
src, srcSize,
dict.buff, dict.size,
cLevel);
FUZZ_ASSERT(cSize == cSize0);
FUZZ_ASSERT(XXH64(compressed, cSize, 0) == hash0);
}
} else {
size_t remainingBytes;
dictContentType = FUZZ_dataProducer_uint32Range(producer, 0, 2);
remainingBytes = FUZZ_dataProducer_remainingBytes(producer);
FUZZ_setRandomParameters(cctx, srcSize, producer);
/* Disable checksum so we can use sizes smaller than compress bound. */
FUZZ_ZASSERT(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 0));
@@ -51,14 +66,29 @@ static size_t roundTripTest(void *result, size_t resultCapacity,
FUZZ_ZASSERT(ZSTD_CCtx_refPrefix_advanced(
cctx, dict.buff, dict.size,
dictContentType));
else
else
FUZZ_ZASSERT(ZSTD_CCtx_loadDictionary_advanced(
cctx, dict.buff, dict.size,
(ZSTD_dictLoadMethod_e)FUZZ_dataProducer_uint32Range(producer, 0, 1),
dictContentType));
cSize = ZSTD_compress2(cctx, compressed, compressedCapacity, src, srcSize);
FUZZ_ZASSERT(cSize);
// Compress a second time and check for determinism
{
size_t const cSize0 = cSize;
XXH64_hash_t const hash0 = XXH64(compressed, cSize, 0);
FUZZ_dataProducer_rollBack(producer, remainingBytes);
FUZZ_setRandomParameters(cctx, srcSize, producer);
FUZZ_ZASSERT(ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 0));
if (refPrefix)
FUZZ_ZASSERT(ZSTD_CCtx_refPrefix_advanced(
cctx, dict.buff, dict.size,
dictContentType));
cSize = ZSTD_compress2(cctx, compressed, compressedCapacity, src, srcSize);
FUZZ_ASSERT(cSize == cSize0);
FUZZ_ASSERT(XXH64(compressed, cSize, 0) == hash0);
}
}
FUZZ_ZASSERT(cSize);
if (refPrefix)
FUZZ_ZASSERT(ZSTD_DCtx_refPrefix_advanced(
dctx, dict.buff, dict.size,
tests/fuzz/fuzz.py
+2
View File
@@ -63,6 +63,8 @@ TARGET_INFO = {
'fse_read_ncount': TargetInfo(InputType.RAW_DATA),
'sequence_compression_api': TargetInfo(InputType.RAW_DATA),
'seekable_roundtrip': TargetInfo(InputType.RAW_DATA),
'huf_round_trip': TargetInfo(InputType.RAW_DATA),
'huf_decompress': TargetInfo(InputType.RAW_DATA),
}
TARGETS = list(TARGET_INFO.keys())
ALL_TARGETS = TARGETS + ['all']
tests/fuzz/fuzz_data_producer.c
+6
View File
@@ -66,6 +66,12 @@ size_t FUZZ_dataProducer_remainingBytes(FUZZ_dataProducer_t *producer){
return producer->size;
}
void FUZZ_dataProducer_rollBack(FUZZ_dataProducer_t *producer, size_t remainingBytes)
{
FUZZ_ASSERT(remainingBytes >= producer->size);
producer->size = remainingBytes;
}
int FUZZ_dataProducer_empty(FUZZ_dataProducer_t *producer) {
return producer->size == 0;
}
tests/fuzz/fuzz_data_producer.h
+3
View File
@@ -49,6 +49,9 @@ int32_t FUZZ_dataProducer_int32Range(FUZZ_dataProducer_t *producer,
/* Returns the size of the remaining bytes of data in the producer */
size_t FUZZ_dataProducer_remainingBytes(FUZZ_dataProducer_t *producer);
/* Rolls back the data producer state to have remainingBytes remaining */
void FUZZ_dataProducer_rollBack(FUZZ_dataProducer_t *producer, size_t remainingBytes);
/* Returns true if the data producer is out of bytes */
int FUZZ_dataProducer_empty(FUZZ_dataProducer_t *producer);
tests/fuzz/huf_decompress.c
+64
View File
@@ -0,0 +1,64 @@
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/**
* This fuzz target performs a zstd round-trip test (compress & decompress),
* compares the result with the original, and calls abort() on corruption.
*/
#define HUF_STATIC_LINKING_ONLY
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "common/cpu.h"
#include "common/huf.h"
#include "fuzz_helpers.h"
#include "fuzz_data_producer.h"
int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
{
FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(src, size);
/* Select random parameters: #streams, X1 or X2 decoding, bmi2 */
int const streams = FUZZ_dataProducer_int32Range(producer, 0, 1);
int const symbols = FUZZ_dataProducer_int32Range(producer, 0, 1);
int const bmi2 = ZSTD_cpuid_bmi2(ZSTD_cpuid()) && FUZZ_dataProducer_int32Range(producer, 0, 1);
/* Select a random cBufSize - it may be too small */
size_t const dBufSize = FUZZ_dataProducer_uint32Range(producer, 0, 8 * size + 500);
size_t const maxTableLog = FUZZ_dataProducer_uint32Range(producer, 1, HUF_TABLELOG_MAX);
HUF_DTable* dt = (HUF_DTable*)FUZZ_malloc(HUF_DTABLE_SIZE(maxTableLog) * sizeof(HUF_DTable));
size_t const wkspSize = HUF_WORKSPACE_SIZE;
void* wksp = FUZZ_malloc(wkspSize);
void* dBuf = FUZZ_malloc(dBufSize);
dt[0] = maxTableLog * 0x01000001;
size = FUZZ_dataProducer_remainingBytes(producer);
if (symbols == 0) {
size_t const err = HUF_readDTableX1_wksp_bmi2(dt, src, size, wksp, wkspSize, bmi2);
if (ZSTD_isError(err))
goto _out;
} else {
size_t const err = HUF_readDTableX2_wksp_bmi2(dt, src, size, wksp, wkspSize, bmi2);
if (ZSTD_isError(err))
goto _out;
}
if (streams == 0)
HUF_decompress1X_usingDTable_bmi2(dBuf, dBufSize, src, size, dt, bmi2);
else
HUF_decompress4X_usingDTable_bmi2(dBuf, dBufSize, src, size, dt, bmi2);
_out:
free(dt);
free(wksp);
free(dBuf);
FUZZ_dataProducer_free(producer);
return 0;
}
tests/fuzz/huf_round_trip.c
+132
View File
@@ -0,0 +1,132 @@
/*
* Copyright (c) Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/**
* This fuzz target performs a zstd round-trip test (compress & decompress),
* compares the result with the original, and calls abort() on corruption.
*/
#define HUF_STATIC_LINKING_ONLY
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "common/cpu.h"
#include "compress/hist.h"
#include "common/huf.h"
#include "fuzz_helpers.h"
#include "fuzz_data_producer.h"
static size_t adjustTableLog(size_t tableLog, size_t maxSymbol)
{
size_t const alphabetSize = maxSymbol + 1;
size_t minTableLog = BIT_highbit32(alphabetSize) + 1;
if ((alphabetSize & (alphabetSize - 1)) != 0) {
++minTableLog;
}
assert(minTableLog <= 9);
if (tableLog < minTableLog)
return minTableLog;
else
return tableLog;
}
int LLVMFuzzerTestOneInput(const uint8_t *src, size_t size)
{
FUZZ_dataProducer_t *producer = FUZZ_dataProducer_create(src, size);
/* Select random parameters: #streams, X1 or X2 decoding, bmi2 */
int const streams = FUZZ_dataProducer_int32Range(producer, 0, 1);
int const symbols = FUZZ_dataProducer_int32Range(producer, 0, 1);
int const bmi2 = ZSTD_cpuid_bmi2(ZSTD_cpuid()) && FUZZ_dataProducer_int32Range(producer, 0, 1);
/* Select a random cBufSize - it may be too small */
size_t const cBufSize = FUZZ_dataProducer_uint32Range(producer, 0, 4 * size);
/* Select a random tableLog - we'll adjust it up later */
size_t tableLog = FUZZ_dataProducer_uint32Range(producer, 1, 12);
size_t const kMaxSize = 256 * 1024;
size = FUZZ_dataProducer_remainingBytes(producer);
if (size > kMaxSize)
size = kMaxSize;
if (size <= 1) {
FUZZ_dataProducer_free(producer);
return 0;
}
uint32_t maxSymbol = 255;
U32 count[256];
size_t const mostFrequent = HIST_count(count, &maxSymbol, src, size);
FUZZ_ZASSERT(mostFrequent);
if (mostFrequent == size) {
/* RLE */
FUZZ_dataProducer_free(producer);
return 0;
}
FUZZ_ASSERT(maxSymbol <= 255);
tableLog = adjustTableLog(tableLog, maxSymbol);
size_t const wkspSize = HUF_WORKSPACE_SIZE;
void* wksp = FUZZ_malloc(wkspSize);
void* rBuf = FUZZ_malloc(size);
void* cBuf = FUZZ_malloc(cBufSize);
HUF_CElt* ct = (HUF_CElt*)FUZZ_malloc(HUF_CTABLE_SIZE(maxSymbol));
HUF_DTable* dt = (HUF_DTable*)FUZZ_malloc(HUF_DTABLE_SIZE(tableLog) * sizeof(HUF_DTable));
dt[0] = tableLog * 0x01000001;
tableLog = HUF_optimalTableLog(tableLog, size, maxSymbol);
FUZZ_ASSERT(tableLog <= 12);
tableLog = HUF_buildCTable_wksp(ct, count, maxSymbol, tableLog, wksp, wkspSize);
FUZZ_ZASSERT(tableLog);
size_t const tableSize = HUF_writeCTable_wksp(cBuf, cBufSize, ct, maxSymbol, tableLog, wksp, wkspSize);
if (ERR_isError(tableSize)) {
/* Errors on uncompressible data or cBufSize too small */
goto _out;
}
FUZZ_ZASSERT(tableSize);
if (symbols == 0) {
FUZZ_ZASSERT(HUF_readDTableX1_wksp_bmi2(dt, cBuf, tableSize, wksp, wkspSize, bmi2));
} else {
size_t const ret = HUF_readDTableX2_wksp(dt, cBuf, tableSize, wksp, wkspSize);
if (ERR_getErrorCode(ret) == ZSTD_error_tableLog_tooLarge) {
FUZZ_ZASSERT(HUF_readDTableX1_wksp_bmi2(dt, cBuf, tableSize, wksp, wkspSize, bmi2));
} else {
FUZZ_ZASSERT(ret);
}
}
size_t cSize;
size_t rSize;
if (streams == 0) {
cSize = HUF_compress1X_usingCTable_bmi2(cBuf, cBufSize, src, size, ct, bmi2);
FUZZ_ZASSERT(cSize);
if (cSize != 0)
rSize = HUF_decompress1X_usingDTable_bmi2(rBuf, size, cBuf, cSize, dt, bmi2);
} else {
cSize = HUF_compress4X_usingCTable_bmi2(cBuf, cBufSize, src, size, ct, bmi2);
FUZZ_ZASSERT(cSize);
if (cSize != 0)
rSize = HUF_decompress4X_usingDTable_bmi2(rBuf, size, cBuf, cSize, dt, bmi2);
}
if (cSize != 0) {
FUZZ_ZASSERT(rSize);
FUZZ_ASSERT_MSG(rSize == size, "Incorrect regenerated size");
FUZZ_ASSERT_MSG(!FUZZ_memcmp(src, rBuf, size), "Corruption!");
}
_out:
free(rBuf);
free(cBuf);
free(ct);
free(dt);
free(wksp);
FUZZ_dataProducer_free(producer);
return 0;
}
tests/fuzz/simple_round_trip.c
+23 -3
View File
@@ -35,16 +35,36 @@ static size_t roundTripTest(void *result, size_t resultCapacity,
size_t dSize;
int targetCBlockSize = 0;
if (FUZZ_dataProducer_uint32Range(producer, 0, 1)) {
size_t const remainingBytes = FUZZ_dataProducer_remainingBytes(producer);
FUZZ_setRandomParameters(cctx, srcSize, producer);
cSize = ZSTD_compress2(cctx, compressed, compressedCapacity, src, srcSize);
FUZZ_ZASSERT(cSize);
FUZZ_ZASSERT(ZSTD_CCtx_getParameter(cctx, ZSTD_c_targetCBlockSize, &targetCBlockSize));
// Compress a second time and check for determinism
{
size_t const cSize0 = cSize;
XXH64_hash_t const hash0 = XXH64(compressed, cSize, 0);
FUZZ_dataProducer_rollBack(producer, remainingBytes);
FUZZ_setRandomParameters(cctx, srcSize, producer);
cSize = ZSTD_compress2(cctx, compressed, compressedCapacity, src, srcSize);
FUZZ_ASSERT(cSize == cSize0);
FUZZ_ASSERT(XXH64(compressed, cSize, 0) == hash0);
}
} else {
int const cLevel = FUZZ_dataProducer_int32Range(producer, kMinClevel, kMaxClevel);
int const cLevel = FUZZ_dataProducer_int32Range(producer, kMinClevel, kMaxClevel);
cSize = ZSTD_compressCCtx(
cctx, compressed, compressedCapacity, src, srcSize, cLevel);
FUZZ_ZASSERT(cSize);
// Compress a second time and check for determinism
{
size_t const cSize0 = cSize;
XXH64_hash_t const hash0 = XXH64(compressed, cSize, 0);
cSize = ZSTD_compressCCtx(
cctx, compressed, compressedCapacity, src, srcSize, cLevel);
FUZZ_ASSERT(cSize == cSize0);
FUZZ_ASSERT(XXH64(compressed, cSize, 0) == hash0);
}
}
FUZZ_ZASSERT(cSize);
dSize = ZSTD_decompressDCtx(dctx, result, resultCapacity, compressed, cSize);
FUZZ_ZASSERT(dSize);
/* When superblock is enabled make sure we don't expand the block more than expected.
tests/fuzz/zstd_helpers.c
+1 -1
View File
@@ -96,7 +96,7 @@ void FUZZ_setRandomParameters(ZSTD_CCtx *cctx, size_t srcSize, FUZZ_dataProducer
setRand(cctx, ZSTD_c_forceMaxWindow, 0, 1, producer);
setRand(cctx, ZSTD_c_literalCompressionMode, 0, 2, producer);
setRand(cctx, ZSTD_c_forceAttachDict, 0, 2, producer);
setRand(cctx, ZSTD_c_splitBlocks, 0, 1, producer);
setRand(cctx, ZSTD_c_useBlockSplitter, 0, 2, producer);
setRand(cctx, ZSTD_c_deterministicRefPrefix, 0, 1, producer);
if (FUZZ_dataProducer_uint32Range(producer, 0, 1) == 0) {
setRand(cctx, ZSTD_c_srcSizeHint, ZSTD_SRCSIZEHINT_MIN, 2 * srcSize, producer);
tests/fuzzer.c
+107 -25
View File
@@ -42,7 +42,7 @@
#include "util.h"
#include "timefn.h" /* SEC_TO_MICRO, UTIL_time_t, UTIL_TIME_INITIALIZER, UTIL_clockSpanMicro, UTIL_getTime */
/* must be included after util.h, due to ERROR macro redefinition issue on Visual Studio */
#include "zstd_internal.h" /* ZSTD_WORKSPACETOOLARGE_MAXDURATION, ZSTD_WORKSPACETOOLARGE_FACTOR, KB, MB */
#include "zstd_internal.h" /* ZSTD_WORKSPACETOOLARGE_MAXDURATION, ZSTD_WORKSPACETOOLARGE_FACTOR, KB, MB */
#include "threading.h" /* ZSTD_pthread_create, ZSTD_pthread_join */
@@ -128,7 +128,7 @@ static U32 FUZ_highbit32(U32 v32)
#define CHECK_VAR(var, fn) var = fn; if (ZSTD_isError(var)) { DISPLAYLEVEL(1, "%s : fails : %s \n", #fn, ZSTD_getErrorName(var)); goto _output_error; }
#define CHECK_NEWV(var, fn) size_t const CHECK_VAR(var, fn)
#define CHECK(fn) { CHECK_NEWV(err, fn); }
#define CHECK(fn) { CHECK_NEWV(__err, fn); }
#define CHECKPLUS(var, fn, more) { CHECK_NEWV(var, fn); more; }
#define CHECK_OP(op, lhs, rhs) { \
@@ -1528,7 +1528,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
DISPLAYLEVEL(3, "test%3i : resize context to full CCtx size : ", testNb++);
staticCCtx = ZSTD_initStaticCStream(staticCCtxBuffer, staticCCtxSize);
DISPLAYLEVEL(4, "staticCCtxBuffer = %p, staticCCtx = %p , ", staticCCtxBuffer, staticCCtx);
DISPLAYLEVEL(4, "staticCCtxBuffer = %p, staticCCtx = %p , ", staticCCtxBuffer, (void*)staticCCtx);
if (staticCCtx == NULL) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
@@ -1718,7 +1718,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
DISPLAYLEVEL(3, "test%3i : compress with block splitting : ", testNb++)
{ ZSTD_CCtx* cctx = ZSTD_createCCtx();
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_splitBlocks, 1) );
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_useBlockSplitter, ZSTD_ps_enable) );
cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK(cSize);
ZSTD_freeCCtx(cctx);
@@ -1732,7 +1732,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_nbWorkers, 2) );
cSize1 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK(cSize1);
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_literalCompressionMode, ZSTD_lcm_uncompressed) );
CHECK( ZSTD_CCtx_setParameter(cctx, ZSTD_c_literalCompressionMode, ZSTD_ps_disable) );
cSize2 = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK(cSize2);
CHECK_LT(cSize1, cSize2);
@@ -1830,6 +1830,47 @@ static int basicUnitTests(U32 const seed, double compressibility)
if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error;
DISPLAYLEVEL(3, "OK \n");
/* Simple API skippable frame test */
DISPLAYLEVEL(3, "test%3i : read/write a skippable frame : ", testNb++);
{ U32 i;
unsigned readMagic;
unsigned long long receivedSize;
size_t skippableSize;
const U32 skipLen = 129 KB;
char* const skipBuff = (char*)malloc(skipLen);
assert(skipBuff != NULL);
for (i = 0; i < skipLen; i++)
skipBuff[i] = (char) ((seed + i) % 256);
skippableSize = ZSTD_writeSkippableFrame(
compressedBuffer, compressedBufferSize,
skipBuff, skipLen, seed % 15);
CHECK_Z(skippableSize);
CHECK_EQ(1, ZSTD_isSkippableFrame(compressedBuffer, skippableSize));
receivedSize = ZSTD_readSkippableFrame(decodedBuffer, CNBuffSize, &readMagic, compressedBuffer, skippableSize);
CHECK_EQ(skippableSize, receivedSize + ZSTD_SKIPPABLEHEADERSIZE);
CHECK_EQ(seed % 15, readMagic);
if (memcmp(decodedBuffer, skipBuff, skipLen) != 0) goto _output_error;
free(skipBuff);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : read/write an empty skippable frame : ", testNb++);
{
unsigned readMagic;
unsigned long long receivedSize;
size_t skippableSize;
skippableSize = ZSTD_writeSkippableFrame(
compressedBuffer, compressedBufferSize,
CNBuffer, 0, seed % 15);
CHECK_EQ(ZSTD_SKIPPABLEHEADERSIZE, skippableSize);
CHECK_EQ(1, ZSTD_isSkippableFrame(compressedBuffer, skippableSize));
receivedSize = ZSTD_readSkippableFrame(NULL, 0, &readMagic, compressedBuffer, skippableSize);
CHECK_EQ(skippableSize, receivedSize + ZSTD_SKIPPABLEHEADERSIZE);
CHECK_EQ(seed % 15, readMagic);
}
DISPLAYLEVEL(3, "OK \n");
/* Dictionary and CCtx Duplication tests */
{ ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx();
ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx();
@@ -1915,29 +1956,37 @@ static int basicUnitTests(U32 const seed, double compressibility)
} }
DISPLAYLEVEL(3, "OK \n");
/* Note : these tests should be replaced by proper regression tests,
* but existing ones do not focus on small data + dictionary + all levels.
*/
if ((int)(compressibility * 100 + 0.1) == FUZ_compressibility_default) { /* test only valid with known input */
size_t const flatdictSize = 22 KB;
size_t const contentSize = 9 KB;
const void* const dict = (const char*)CNBuffer;
const void* const contentStart = (const char*)dict + flatdictSize;
/* These upper bounds are generally within a few bytes of the compressed size */
size_t const target_nodict_cSize[22+1] = { 3840, 3770, 3870, 3830, 3770,
3770, 3770, 3770, 3750, 3750,
3742, 3670, 3670, 3660, 3660,
3660, 3660, 3660, 3660, 3660,
3660, 3660, 3660 };
size_t const target_wdict_cSize[22+1] = { 2830, 2890, 2890, 2820, 2940,
size_t target_nodict_cSize[22+1] = { 3840, 3770, 3870, 3830, 3770,
3770, 3770, 3770, 3750, 3750,
3742, 3675, 3674, 3665, 3664,
3663, 3662, 3661, 3660, 3660,
3660, 3660, 3660 };
size_t const target_wdict_cSize[22+1] = { 2830, 2896, 2893, 2820, 2940,
2950, 2950, 2925, 2900, 2891,
2910, 2910, 2910, 2770, 2760,
2750, 2750, 2750, 2750, 2750,
2750, 2750, 2750 };
2910, 2910, 2910, 2780, 2775,
2765, 2760, 2755, 2754, 2753,
2753, 2753, 2753 };
int l = 1;
int const maxLevel = ZSTD_maxCLevel();
/* clevels with strategies that support rowhash on small inputs */
int rowLevel = 4;
int const rowLevelEnd = 8;
DISPLAYLEVEL(3, "test%3i : flat-dictionary efficiency test : \n", testNb++);
assert(maxLevel == 22);
RDG_genBuffer(CNBuffer, flatdictSize + contentSize, compressibility, 0., seed);
DISPLAYLEVEL(4, "content hash : %016llx; dict hash : %016llx \n", XXH64(contentStart, contentSize, 0), XXH64(dict, flatdictSize, 0));
DISPLAYLEVEL(4, "content hash : %016llx; dict hash : %016llx \n",
(unsigned long long)XXH64(contentStart, contentSize, 0),
(unsigned long long)XXH64(dict, flatdictSize, 0));
for ( ; l <= maxLevel; l++) {
size_t const nodict_cSize = ZSTD_compress(compressedBuffer, compressedBufferSize,
@@ -1964,6 +2013,27 @@ static int basicUnitTests(U32 const seed, double compressibility)
DISPLAYLEVEL(4, "level %i with dictionary : max expected %u >= reached %u \n",
l, (unsigned)target_wdict_cSize[l], (unsigned)wdict_cSize);
}
/* Compression with ZSTD_compress2 and row match finder force enabled.
* Give some slack for force-enabled row matchfinder since we're on a small input (9KB)
*/
for ( ; rowLevel <= rowLevelEnd; ++rowLevel) target_nodict_cSize[rowLevel] += 5;
for (l=1 ; l <= maxLevel; l++) {
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
size_t nodict_cSize;
ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, l);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_useRowMatchFinder, ZSTD_ps_enable);
nodict_cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize,
contentStart, contentSize);
if (nodict_cSize > target_nodict_cSize[l]) {
DISPLAYLEVEL(1, "error : compression with compress2 at level %i worse than expected (%u > %u) \n",
l, (unsigned)nodict_cSize, (unsigned)target_nodict_cSize[l]);
ZSTD_freeCCtx(cctx);
goto _output_error;
}
DISPLAYLEVEL(4, "level %i with compress2 : max expected %u >= reached %u \n",
l, (unsigned)target_nodict_cSize[l], (unsigned)nodict_cSize);
ZSTD_freeCCtx(cctx);
}
/* Dict compression with DMS */
for ( l=1 ; l <= maxLevel; l++) {
size_t wdict_cSize;
@@ -2470,7 +2540,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
CHECK_Z( ZSTD_DCtx_loadDictionary(dctx, dictBuffer, dictSize) );
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
/* The dictionary should presist across calls. */
/* The dictionary should persist across calls. */
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
/* When we reset the context the dictionary is cleared. */
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
@@ -2489,7 +2559,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
CHECK_Z( ZSTD_DCtx_refDDict(dctx, ddict) );
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
/* The ddict should presist across calls. */
/* The ddict should persist across calls. */
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, CNBuffSize, compressedBuffer, cSize) );
/* When we reset the context the ddict is cleared. */
ZSTD_DCtx_reset(dctx, ZSTD_reset_session_and_parameters);
@@ -3289,6 +3359,23 @@ static int basicUnitTests(U32 const seed, double compressibility)
FSE_normalizeCount(norm, tableLog, count, nbSeq, maxSymbolValue, /* useLowProbCount */ 1);
}
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : testing FSE_writeNCount() PR#2779: ", testNb++);
{
size_t const outBufSize = 9;
short const count[11] = {1, 0, 1, 0, 1, 0, 1, 0, 1, 9, 18};
unsigned const tableLog = 5;
unsigned const maxSymbolValue = 10;
BYTE* outBuf = (BYTE*)malloc(outBufSize*sizeof(BYTE));
/* Ensure that this write doesn't write out of bounds, and that
* FSE_writeNCount_generic() is *not* called with writeIsSafe == 1.
*/
FSE_writeNCount(outBuf, outBufSize, count, maxSymbolValue, tableLog);
free(outBuf);
}
DISPLAYLEVEL(3, "OK \n");
#ifdef ZSTD_MULTITHREAD
DISPLAYLEVEL(3, "test%3i : passing wrong full dict should fail on compressStream2 refPrefix ", testNb++);
{ ZSTD_CCtx* cctx = ZSTD_createCCtx();
@@ -3407,11 +3494,7 @@ static int basicUnitTests(U32 const seed, double compressibility)
DISPLAYLEVEL(3, "error! l: %d dict: %zu srcSize: %zu cctx size cpar: %zu, cctx size level: %zu\n",
level, dictSize, srcSize, cctxSizeUsingCParams, cctxSizeUsingLevel);
goto _output_error;
}
}
}
}
}
} } } } }
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : thread pool API tests : \n", testNb++)
@@ -3527,8 +3610,7 @@ static int longUnitTests(U32 const seed, double compressibility)
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "longtest%3i : testing ldm no regressions in size for opt parser : ", testNb++);
{
size_t cSizeLdm;
{ size_t cSizeLdm;
size_t cSizeNoLdm;
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
@@ -3606,7 +3688,7 @@ static int longUnitTests(U32 const seed, double compressibility)
CHECK(cdict != NULL);
CHECK_Z(ZSTD_CCtx_refCDict(cctx, cdict));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, attachPref));
CHECK_Z(ZSTD_CCtx_setParameter(cctx, ZSTD_c_forceAttachDict, (int)attachPref));
cSize = ZSTD_compress2(cctx, compressedBuffer, compressedBufferSize, CNBuffer, CNBuffSize);
CHECK_Z(cSize);
tests/libzstd_partial_builds.sh → tests/libzstd_builds.sh
+7 -2
View File
@@ -23,14 +23,19 @@ mustBeAbsent() {
# default compilation : all features enabled - no zbuff
$ECHO "testing default library compilation"
CFLAGS= make -C $DIR/../lib libzstd.a > $INTOVOID
CFLAGS= make -C $DIR/../lib libzstd libzstd.a > $INTOVOID
nm $DIR/../lib/libzstd.a | $GREP "\.o" > tmplog
isPresent "zstd_compress.o"
isPresent "zstd_decompress.o"
isPresent "zdict.o"
isPresent "zstd_v07.o"
mustBeAbsent "zbuff_compress.o"
$RM $DIR/../lib/libzstd.a tmplog
$RM tmplog
# Check that the exec-stack bit isn't set
readelf -lW $DIR/../lib/libzstd.so | $GREP "GNU_STACK" > tmplog
mustBeAbsent "RWE"
$RM $DIR/../lib/libzstd.a $DIR/../lib/libzstd.so* tmplog
# compression disabled => also disable zdict
$ECHO "testing with compression disabled"
tests/paramgrill.c
+4 -4
View File
@@ -2652,7 +2652,7 @@ static int usage_advanced(void)
(unsigned)g_timeLimit_s, (double)g_timeLimit_s / 3600);
DISPLAY( " -v : Prints Benchmarking output\n");
DISPLAY( " -D : Next argument dictionary file\n");
DISPLAY( " -s : Seperate Files\n");
DISPLAY( " -s : Separate Files\n");
return 0;
}
@@ -2707,7 +2707,7 @@ int main(int argc, const char** argv)
const char* dictFileName = NULL;
U32 main_pause = 0;
int cLevelOpt = 0, cLevelRun = 0;
int seperateFiles = 0;
int separateFiles = 0;
double compressibility = COMPRESSIBILITY_DEFAULT;
U32 memoTableLog = PARAM_UNSET;
constraint_t target = { 0, 0, (U32)-1 };
@@ -2895,7 +2895,7 @@ int main(int argc, const char** argv)
case 's':
argument++;
seperateFiles = 1;
separateFiles = 1;
break;
case 'q':
@@ -2940,7 +2940,7 @@ int main(int argc, const char** argv)
result = benchSample(compressibility, cLevelRun);
}
} else {
if(seperateFiles) {
if(separateFiles) {
for(i = 0; i < argc - filenamesStart; i++) {
if (g_optimizer) {
result = optimizeForSize(argv+filenamesStart + i, 1, dictFileName, target, paramTarget, cLevelOpt, cLevelRun, memoTableLog);
tests/playTests.sh
+92 -20
View File
@@ -124,6 +124,13 @@ case "$UNAME" in
Darwin | FreeBSD | OpenBSD | NetBSD) MTIME="stat -f %m" ;;
esac
assertSameMTime() {
MT1=$($MTIME "$1")
MT2=$($MTIME "$2")
echo MTIME $MT1 $MT2
[ "$MT1" = "$MT2" ] || die "mtime on $1 doesn't match mtime on $2 ($MT1 != $MT2)"
}
GET_PERMS="stat -c %a"
case "$UNAME" in
Darwin | FreeBSD | OpenBSD | NetBSD) GET_PERMS="stat -f %Lp" ;;
@@ -159,10 +166,11 @@ if [ -z "${DATAGEN_BIN}" ]; then
DATAGEN_BIN="$TESTDIR/datagen"
fi
ZSTD_BIN="$EXE_PREFIX$ZSTD_BIN"
# Why was this line here ? Generates a strange ZSTD_BIN when EXE_PREFIX is non empty
# ZSTD_BIN="$EXE_PREFIX$ZSTD_BIN"
# assertions
[ -n "$ZSTD_BIN" ] || die "zstd not found at $ZSTD_BIN! \n Please define ZSTD_BIN pointing to the zstd binary. You might also consider rebuilding zstd follwing the instructions in README.md"
[ -n "$ZSTD_BIN" ] || die "zstd not found at $ZSTD_BIN! \n Please define ZSTD_BIN pointing to the zstd binary. You might also consider rebuilding zstd following the instructions in README.md"
[ -n "$DATAGEN_BIN" ] || die "datagen not found at $DATAGEN_BIN! \n Please define DATAGEN_BIN pointing to the datagen binary. You might also consider rebuilding zstd tests following the instructions in README.md. "
println "\nStarting playTests.sh isWindows=$isWindows EXE_PREFIX='$EXE_PREFIX' ZSTD_BIN='$ZSTD_BIN' DATAGEN_BIN='$DATAGEN_BIN'"
@@ -178,8 +186,14 @@ fi
println "\n===> simple tests "
datagen > tmp
zstd -h
zstd -H
zstd -V
println "test : basic compression "
zstd -f tmp # trivial compression case, creates tmp.zst
zstd -f -z tmp
zstd -f -k tmp
zstd -f -C tmp
println "test : basic decompression"
zstd -df tmp.zst # trivial decompression case (overwrites tmp)
println "test : too large compression level => auto-fix"
@@ -263,6 +277,10 @@ zstd -q -f tmpro
println "test: --no-progress flag"
zstd tmpro -c --no-progress | zstd -d -f -o "$INTOVOID" --no-progress
zstd tmpro -cv --no-progress | zstd -dv -f -o "$INTOVOID" --no-progress
println "test: --progress flag"
zstd tmpro -c | zstd -d -f -o "$INTOVOID" --progress 2>&1 | grep -E "[A-Za-z0-9._ ]+: [0-9]+ bytes"
zstd tmpro -c | zstd -d -f -q -o "$INTOVOID" --progress 2>&1 | grep -E "[A-Za-z0-9._ ]+: [0-9]+ bytes"
zstd tmpro -c | zstd -d -f -v -o "$INTOVOID" 2>&1 | grep -E "[A-Za-z0-9._ ]+: [0-9]+ bytes"
rm -f tmpro tmpro.zst
println "test: overwrite input file (must fail)"
zstd tmp -fo tmp && die "zstd compression overwrote the input file"
@@ -325,6 +343,7 @@ zstd --long --rm -r precompressedFilterTestDir
# Files should get compressed again without the --exclude-compressed flag.
test -f precompressedFilterTestDir/input.5.zst.zst
test -f precompressedFilterTestDir/input.6.zst.zst
rm -rf precompressedFilterTestDir
println "Test completed"
@@ -338,8 +357,8 @@ zstd < tmpPrompt -o tmpPrompt.zst -f # should successfully overwrite with -f
zstd -q -d -f tmpPrompt.zst -o tmpPromptRegenerated
$DIFF tmpPromptRegenerated tmpPrompt # the first 'y' character should not be swallowed
echo 'yes' | zstd tmpPrompt -o tmpPrompt.zst # accept piped "y" input to force overwrite when using files
echo 'yes' | zstd < tmpPrompt -o tmpPrompt.zst && die "should have aborted immediately and failed to overwrite"
echo 'yes' | zstd tmpPrompt -v -o tmpPrompt.zst # accept piped "y" input to force overwrite when using files
echo 'yes' | zstd < tmpPrompt -v -o tmpPrompt.zst && die "should have aborted immediately and failed to overwrite"
zstd tmpPrompt - < tmpPrompt -o tmpPromp.zst --rm && die "should have aborted immediately and failed to remove"
println "Test completed"
@@ -358,9 +377,9 @@ test ! -f tmp.zst # tmp.zst should no longer be present
println "test : should quietly not remove non-regular file"
println hello > tmp
zstd tmp -f -o "$DEVDEVICE" 2>tmplog > "$INTOVOID"
grep -v "Refusing to remove non-regular file" tmplog
grep "Refusing to remove non-regular file" tmplog && die
rm -f tmplog
zstd tmp -f -o "$INTOVOID" 2>&1 | grep -v "Refusing to remove non-regular file"
zstd tmp -f -o "$INTOVOID" 2>&1 | grep "Refusing to remove non-regular file" && die
println "test : --rm on stdin"
println a | zstd --rm > $INTOVOID # --rm should remain silent
rm -f tmp
@@ -407,11 +426,11 @@ zstd tmp1 tmp2 -q -o tmpexists && die "should have refused to overwrite"
println gooder > tmp_rm1
println boi > tmp_rm2
println worldly > tmp_rm3
echo 'y' | zstd tmp_rm1 tmp_rm2 -o tmp_rm3.zst --rm # tests the warning prompt for --rm with multiple inputs into once source
echo 'y' | zstd tmp_rm1 tmp_rm2 -v -o tmp_rm3.zst --rm # tests the warning prompt for --rm with multiple inputs into once source
test ! -f tmp_rm1
test ! -f tmp_rm2
cp tmp_rm3.zst tmp_rm4.zst
echo 'Y' | zstd -d tmp_rm3.zst tmp_rm4.zst -o tmp_rm_out --rm
echo 'Y' | zstd -d tmp_rm3.zst tmp_rm4.zst -v -o tmp_rm_out --rm
test ! -f tmp_rm3.zst
test ! -f tmp_rm4.zst
echo 'yes' | zstd tmp_rm_out tmp_rm3 -c --rm && die "compressing multiple files to stdout with --rm should fail unless -f is specified"
@@ -583,6 +602,17 @@ if [ -n "$READFROMBLOCKDEVICE" ] ; then
rm -f tmp.img tmp.img.zst tmp.img.copy
fi
println "\n===> zstd created file timestamp tests"
datagen > tmp
touch -m -t 200001010000.00 tmp
println "test : copy mtime in file -> file compression "
zstd -f tmp -o tmp.zst
assertSameMTime tmp tmp.zst
println "test : copy mtime in file -> file decompression "
zstd -f -d tmp.zst -o tmp.out
assertSameMTime tmp.zst tmp.out
rm -f tmp
println "\n===> compress multiple files into an output directory, --output-dir-flat"
println henlo > tmp1
mkdir tmpInputTestDir
@@ -689,6 +719,10 @@ test -f tmp2
test -f tmp3
test -f tmp4
println "test : survive the list of files with too long filenames (--filelist=FILE)"
datagen -g5M > tmp_badList
zstd -f --filelist=tmp_badList && die "should have failed : file name length is too long"
println "test : survive a list of files which is text garbage (--filelist=FILE)"
datagen > tmp_badList
zstd -f --filelist=tmp_badList && die "should have failed : list is text garbage"
@@ -719,6 +753,7 @@ rm -rf tmp*
println "test : show-default-cparams regular"
datagen > tmp
zstd --show-default-cparams -f tmp
zstd --show-default-cparams -d tmp.zst && die "error: can't use --show-default-cparams in decompression mode"
rm -rf tmp*
println "test : show-default-cparams recursive"
@@ -729,6 +764,13 @@ datagen -g257000 > tmp_files/tmp3
zstd --show-default-cparams -f -r tmp_files
rm -rf tmp*
println "test : show compression parameters in verbose mode"
datagen > tmp
zstd -vv tmp 2>&1 | \
grep -q -E -- "--zstd=wlog=[[:digit:]]+,clog=[[:digit:]]+,hlog=[[:digit:]]+,\
slog=[[:digit:]]+,mml=[[:digit:]]+,tlen=[[:digit:]]+,strat=[[:digit:]]+"
rm -rf tmp*
println "\n===> Advanced compression parameters "
println "Hello world!" | zstd --zstd=windowLog=21, - -o tmp.zst && die "wrong parameters not detected!"
println "Hello world!" | zstd --zstd=windowLo=21 - -o tmp.zst && die "wrong parameters not detected!"
@@ -757,6 +799,9 @@ println "world!" > world.tmp
cat hello.tmp world.tmp > helloworld.tmp
zstd -c hello.tmp > hello.zst
zstd -c world.tmp > world.zst
zstd -c hello.tmp world.tmp > helloworld.zst
zstd -dc helloworld.zst > result.tmp
$DIFF helloworld.tmp result.tmp
cat hello.zst world.zst > helloworld.zst
zstd -dc helloworld.zst > result.tmp
cat result.tmp
@@ -787,7 +832,7 @@ rm -f ./*.tmp ./*.zstd
println "frame concatenation tests completed"
if [ "$isWindows" = false ] && [ "$UNAME" != 'SunOS' ] && [ "$UNAME" != "OpenBSD" ] ; then
if [ "$isWindows" = false ] && [ "$UNAME" != 'SunOS' ] && [ "$UNAME" != "OpenBSD" ] && [ "$UNAME" != "AIX" ]; then
println "\n**** flush write error test **** "
println "println foo | zstd > /dev/full"
@@ -909,11 +954,23 @@ cat tmp | zstd -14 -f --size-hint=11050 | zstd -t # slightly too high
cat tmp | zstd -14 -f --size-hint=10950 | zstd -t # slightly too low
cat tmp | zstd -14 -f --size-hint=22000 | zstd -t # considerably too high
cat tmp | zstd -14 -f --size-hint=5500 | zstd -t # considerably too low
println "test : allows and interprets K,KB,KiB,M,MB and MiB suffix"
cat tmp | zstd -14 -f --size-hint=11K | zstd -t
cat tmp | zstd -14 -f --size-hint=11KB | zstd -t
cat tmp | zstd -14 -f --size-hint=11KiB | zstd -t
cat tmp | zstd -14 -f --size-hint=1M | zstd -t
cat tmp | zstd -14 -f --size-hint=1MB | zstd -t
cat tmp | zstd -14 -f --size-hint=1MiB | zstd -t
println "\n===> dictionary tests "
println "- test with raw dict (content only) "
println "- Test high/low compressibility corpus training"
datagen -g12M -P90 > tmpCorpusHighCompress
datagen -g12M -P5 > tmpCorpusLowCompress
zstd --train -B2K tmpCorpusHighCompress -o tmpDictHighCompress
zstd --train -B2K tmpCorpusLowCompress -o tmpDictLowCompress
rm -f tmpCorpusHighCompress tmpCorpusLowCompress tmpDictHighCompress tmpDictLowCompress
println "- Test with raw dict (content only) "
datagen > tmpDict
datagen -g1M | $MD5SUM > tmp1
datagen -g1M | zstd -D tmpDict | zstd -D tmpDict -dvq | $MD5SUM > tmp2
@@ -934,6 +991,11 @@ println "- Dictionary compression with btlazy2 strategy"
zstd -f tmp -D tmpDict --zstd=strategy=6
zstd -d tmp.zst -D tmpDict -fo result
$DIFF "$TESTFILE" result
if [ -e /proc/self/fd/0 ]; then
println "- Test rejecting irregular dictionary file"
cat tmpDict | zstd -f tmp -D /proc/self/fd/0 && die "Piped dictionary should fail!"
cat tmpDict | zstd -d tmp.zst -D /proc/self/fd/0 -f && die "Piped dictionary should fail!"
fi
if [ -n "$hasMT" ]
then
println "- Test dictionary compression with multithreading "
@@ -982,17 +1044,20 @@ zstd -o tmpDict --train "$TESTDIR"/*.c "$PRGDIR"/*.c
test -f tmpDict
zstd --train "$TESTDIR"/*.c "$PRGDIR"/*.c
test -f dictionary
println "- Test dictionary training fails"
echo "000000000000000000000000000000000" > tmpz
zstd --train tmpz tmpz tmpz tmpz tmpz tmpz tmpz tmpz tmpz && die "Dictionary training should fail : source is all zeros"
if [ -n "$hasMT" ]
then
zstd --train -T0 tmpz tmpz tmpz tmpz tmpz tmpz tmpz tmpz tmpz && die "Dictionary training should fail : source is all zeros"
println "- Create dictionary with multithreading enabled"
zstd --train -T0 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpDict
fi
rm -f tmp* dictionary
println "- Test --memory for dictionary compression"
datagen -g12M -P90 > tmpCorpusHighCompress
zstd --train -B2K tmpCorpusHighCompress -o tmpDictHighCompress --memory=10K && die "Dictionary training should fail : --memory too low (10K)"
zstd --train -B2K tmpCorpusHighCompress -o tmpDictHighCompress --memory=5MB 2> zstTrainWithMemLimitStdErr
cat zstTrainWithMemLimitStdErr | grep "setting manual memory limit for dictionary training data at 5 MB"
cat zstTrainWithMemLimitStdErr | grep "Training samples set too large (12 MB); training on 5 MB only..."
rm zstTrainWithMemLimitStdErr
println "\n===> fastCover dictionary builder : advanced options "
TESTFILE="$PRGDIR"/zstdcli.c
@@ -1014,6 +1079,7 @@ println "- Create dictionaries with shrink-dict flag enabled"
zstd --train-fastcover=steps=1,shrink "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpShrinkDict
zstd --train-fastcover=steps=1,shrink=1 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpShrinkDict1
zstd --train-fastcover=steps=1,shrink=5 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpShrinkDict2
zstd --train-fastcover=shrink=5,steps=1 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpShrinkDict3
println "- Create dictionary with size limit"
zstd --train-fastcover=steps=1 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpDict2 --maxdict=4K
println "- Create dictionary using all samples for both training and testing"
@@ -1285,7 +1351,7 @@ println "\n===> tar extension tests "
rm -f tmp tmp.tar tmp.tzst tmp.tgz tmp.txz tmp.tlz4 tmp1.zstd
datagen > tmp
tar cf tmp.tar tmp
tar -cf tmp.tar tmp
zstd tmp.tar -o tmp.tzst
rm -f tmp.tar
zstd -d tmp.tzst
@@ -1293,21 +1359,21 @@ zstd -d tmp.tzst
rm -f tmp.tar tmp.tzst
if [ $GZIPMODE -eq 1 ]; then
tar czf tmp.tgz tmp
tar -c tmp | gzip > tmp.tgz
zstd -d tmp.tgz
[ -e tmp.tar ] || die ".tgz failed to decompress to .tar!"
rm -f tmp.tar tmp.tgz
fi
if [ $LZMAMODE -eq 1 ]; then
tar c tmp | zstd --format=xz > tmp.txz
tar -c tmp | zstd --format=xz > tmp.txz
zstd -d tmp.txz
[ -e tmp.tar ] || die ".txz failed to decompress to .tar!"
rm -f tmp.tar tmp.txz
fi
if [ $LZ4MODE -eq 1 ]; then
tar c tmp | zstd --format=lz4 > tmp.tlz4
tar -c tmp | zstd --format=lz4 > tmp.tlz4
zstd -d tmp.tlz4
[ -e tmp.tar ] || die ".tlz4 failed to decompress to .tar!"
rm -f tmp.tar tmp.tlz4
@@ -1347,6 +1413,8 @@ if [ -n "$hasMT" ]
then
println "\n===> zstdmt round-trip tests "
roundTripTest -g4M "1 -T0"
roundTripTest -g4M "1 -T0 --auto-threads=physical"
roundTripTest -g4M "1 -T0 --auto-threads=logical"
roundTripTest -g8M "3 -T2"
roundTripTest -g8M "19 --long"
roundTripTest -g8000K "2 --threads=2"
@@ -1441,7 +1509,7 @@ datagen -g0 > tmp5
zstd tmp5
zstd -l tmp5.zst
zstd -l tmp5* && die "-l must fail on non-zstd file"
zstd -lv tmp5.zst | grep "Decompressed Size: 0.00 KB (0 B)" # check that 0 size is present in header
zstd -lv tmp5.zst | grep "Decompressed Size: 0 B (0 B)" # check that 0 size is present in header
zstd -lv tmp5* && die "-l must fail on non-zstd file"
println "\n===> zstd --list/-l test with no content size field "
@@ -1515,8 +1583,10 @@ then
println "\n===> adaptive mode "
roundTripTest -g270000000 " --adapt"
roundTripTest -g27000000 " --adapt=min=1,max=4"
roundTripTest -g27000000 " --adapt=min=-2,max=-1"
println "===> test: --adapt must fail on incoherent bounds "
datagen > tmp
zstd --adapt= tmp && die "invalid compression parameter"
zstd -f -vv --adapt=min=10,max=9 tmp && die "--adapt must fail on incoherent bounds"
println "\n===> rsyncable mode "
@@ -1635,6 +1705,7 @@ println "- Create first dictionary"
zstd --train-cover=k=46,d=8,split=80 "$TESTDIR"/*.c "$PRGDIR"/*.c -o tmpDict
cp "$TESTFILE" tmp
zstd -f tmp -D tmpDict
zstd -f tmp -D tmpDict --patch-from=tmpDict && die "error: can't use -D and --patch-from=#at the same time"
zstd -d tmp.zst -D tmpDict -fo result
$DIFF "$TESTFILE" result
zstd --train-cover=k=56,d=8 && die "Create dictionary without input file (should error)"
@@ -1645,6 +1716,7 @@ println "- Create dictionary using shrink-dict flag"
zstd --train-cover=steps=256,shrink "$TESTDIR"/*.c "$PRGDIR"/*.c --dictID=1 -o tmpShrinkDict
zstd --train-cover=steps=256,shrink=1 "$TESTDIR"/*.c "$PRGDIR"/*.c --dictID=1 -o tmpShrinkDict1
zstd --train-cover=steps=256,shrink=5 "$TESTDIR"/*.c "$PRGDIR"/*.c --dictID=1 -o tmpShrinkDict2
zstd --train-cover=shrink=5,steps=256 "$TESTDIR"/*.c "$PRGDIR"/*.c --dictID=1 -o tmpShrinkDict3
println "- Create dictionary with short dictID"
zstd --train-cover=k=46,d=8,split=80 "$TESTDIR"/*.c "$PRGDIR"/*.c --dictID=1 -o tmpDict1
cmp tmpDict tmpDict1 && die "dictionaries should have different ID !"
tests/regression/Makefile
+2 -1
View File
@@ -15,7 +15,7 @@ CURL_LDFLAGS := $(shell curl-config --libs) -pthread
PROGDIR := ../../programs
LIBDIR := ../../lib
ZSTD_CPPFLAGS := -I$(PROGDIR) -I$(LIBDIR) -I$(LIBDIR)/common
ZSTD_CPPFLAGS := -I$(PROGDIR) -I$(LIBDIR) -I$(LIBDIR)/common -Wno-deprecated-declarations
REGRESSION_CFLAGS = $(CFLAGS) $(CURL_CFLAGS)
REGRESSION_CPPFLAGS = $(CPPFLAGS) $(ZSTD_CPPFLAGS)
@@ -46,6 +46,7 @@ result.o: result.c result.h
test.o: test.c data.h config.h method.h
$(CC) $(REGRESSION_CFLAGS) $(REGRESSION_CPPFLAGS) $< -c -o $@
.PHONY: libzstd.a
libzstd.a:
$(MAKE) -C $(LIBDIR) libzstd.a-mt
cp $(LIBDIR)/libzstd.a .
tests/regression/config.c
+4 -4
View File
@@ -215,7 +215,7 @@ static config_t mt_ldm = {
static param_value_t mt_advanced_param_values[] = {
{.param = ZSTD_c_nbWorkers, .value = 2},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_ps_disable},
};
static config_t mt_advanced = {
@@ -258,7 +258,7 @@ static config_t small_clog = {
static param_value_t const uncompressed_literals_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = 3},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_ps_disable},
};
static config_t uncompressed_literals = {
@@ -269,7 +269,7 @@ static config_t uncompressed_literals = {
static param_value_t const uncompressed_literals_opt_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = 19},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_uncompressed},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_ps_disable},
};
static config_t uncompressed_literals_opt = {
@@ -280,7 +280,7 @@ static config_t uncompressed_literals_opt = {
static param_value_t const huffman_literals_param_values[] = {
{.param = ZSTD_c_compressionLevel, .value = -1},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_lcm_huffman},
{.param = ZSTD_c_literalCompressionMode, .value = ZSTD_ps_enable},
};
static config_t huffman_literals = {
tests/regression/levels.h
+7 -5
View File
@@ -35,21 +35,23 @@ LEVEL(1)
LEVEL(3)
LEVEL(4)
/* ROW_LEVEL triggers the row hash (force enabled and disabled) with different
* dictionary strategies, and 16/32 row entries based on the level/searchLog.
* 1 == disabled, 2 == enabled.
* dictionary strategies, and 16/32/64 row entries based on the level/searchLog.
* 1 == enabled, 2 == disabled.
*/
ROW_LEVEL(5, 1)
ROW_LEVEL(5, 2)
ROW_LEVEL(5, 2) /* 16-entry rows */
LEVEL(5)
LEVEL(6)
ROW_LEVEL(7, 1)
ROW_LEVEL(7, 2)
ROW_LEVEL(7, 2) /* 16-entry rows */
LEVEL(7)
LEVEL(9)
ROW_LEVEL(11, 1)
ROW_LEVEL(11, 2) /* 32-entry rows */
ROW_LEVEL(12, 1)
ROW_LEVEL(12, 2)
ROW_LEVEL(12, 2) /* 64-entry rows */
LEVEL(13)
LEVEL(16)
tests/regression/results.csv
+1009 -937
View File
@@ -1,74 +1,74 @@
Data, Config, Method, Total compressed size
silesia.tar, level -5, compress simple, 6738593
silesia.tar, level -3, compress simple, 6446372
silesia.tar, level -1, compress simple, 6186042
silesia.tar, level 0, compress simple, 4861425
silesia.tar, level 1, compress simple, 5334885
silesia.tar, level 3, compress simple, 4861425
silesia.tar, level 4, compress simple, 4799630
silesia.tar, level 5, compress simple, 4719256
silesia.tar, level 6, compress simple, 4677721
silesia.tar, level 7, compress simple, 4613541
silesia.tar, level 9, compress simple, 4555426
silesia.tar, level 13, compress simple, 4491764
silesia.tar, level 16, compress simple, 4381332
silesia.tar, level 19, compress simple, 4281605
silesia.tar, uncompressed literals, compress simple, 4861425
silesia.tar, uncompressed literals optimal, compress simple, 4281605
silesia.tar, huffman literals, compress simple, 6186042
github.tar, level -5, compress simple, 46856
github.tar, level -3, compress simple, 43754
github.tar, level -1, compress simple, 42490
github.tar, level 0, compress simple, 38441
github.tar, level 1, compress simple, 39265
github.tar, level 3, compress simple, 38441
github.tar, level 4, compress simple, 38467
github.tar, level 5, compress simple, 39693
github.tar, level 6, compress simple, 39621
github.tar, level 7, compress simple, 39213
github.tar, level 9, compress simple, 36758
github.tar, level 13, compress simple, 35621
github.tar, level 16, compress simple, 40255
github.tar, level 19, compress simple, 32837
github.tar, uncompressed literals, compress simple, 38441
github.tar, uncompressed literals optimal, compress simple, 32837
github.tar, huffman literals, compress simple, 42490
silesia, level -5, compress cctx, 6737607
silesia, level -3, compress cctx, 6444677
silesia, level -1, compress cctx, 6178460
silesia, level 0, compress cctx, 4849552
silesia, level 1, compress cctx, 5313204
silesia, level 3, compress cctx, 4849552
silesia, level 4, compress cctx, 4786970
silesia, level 5, compress cctx, 4707794
silesia, level 6, compress cctx, 4666383
silesia, level 7, compress cctx, 4603381
silesia, level 9, compress cctx, 4546001
silesia, level 13, compress cctx, 4482135
silesia, level 16, compress cctx, 4377465
silesia, level 19, compress cctx, 4293330
silesia, long distance mode, compress cctx, 4849552
silesia, multithreaded, compress cctx, 4849552
silesia, multithreaded long distance mode, compress cctx, 4849552
silesia, small window log, compress cctx, 7084179
silesia, small hash log, compress cctx, 6555021
silesia, small chain log, compress cctx, 4931148
silesia, explicit params, compress cctx, 4794479
silesia, uncompressed literals, compress cctx, 4849552
silesia, uncompressed literals optimal, compress cctx, 4293330
silesia, huffman literals, compress cctx, 6178460
silesia, multithreaded with advanced params, compress cctx, 4849552
github, level -5, compress cctx, 205285
silesia.tar, level -5, compress simple, 6853608
silesia.tar, level -3, compress simple, 6505969
silesia.tar, level -1, compress simple, 6179026
silesia.tar, level 0, compress simple, 4854086
silesia.tar, level 1, compress simple, 5327373
silesia.tar, level 3, compress simple, 4854086
silesia.tar, level 4, compress simple, 4791503
silesia.tar, level 5, compress simple, 4677740
silesia.tar, level 6, compress simple, 4613242
silesia.tar, level 7, compress simple, 4576661
silesia.tar, level 9, compress simple, 4552899
silesia.tar, level 13, compress simple, 4502956
silesia.tar, level 16, compress simple, 4360527
silesia.tar, level 19, compress simple, 4267266
silesia.tar, uncompressed literals, compress simple, 4854086
silesia.tar, uncompressed literals optimal, compress simple, 4267266
silesia.tar, huffman literals, compress simple, 6179026
github.tar, level -5, compress simple, 52110
github.tar, level -3, compress simple, 45678
github.tar, level -1, compress simple, 42560
github.tar, level 0, compress simple, 38831
github.tar, level 1, compress simple, 39200
github.tar, level 3, compress simple, 38831
github.tar, level 4, compress simple, 38893
github.tar, level 5, compress simple, 39651
github.tar, level 6, compress simple, 39282
github.tar, level 7, compress simple, 38110
github.tar, level 9, compress simple, 36760
github.tar, level 13, compress simple, 35501
github.tar, level 16, compress simple, 40471
github.tar, level 19, compress simple, 32134
github.tar, uncompressed literals, compress simple, 38831
github.tar, uncompressed literals optimal, compress simple, 32134
github.tar, huffman literals, compress simple, 42560
silesia, level -5, compress cctx, 6852424
silesia, level -3, compress cctx, 6503413
silesia, level -1, compress cctx, 6172178
silesia, level 0, compress cctx, 4842075
silesia, level 1, compress cctx, 5306426
silesia, level 3, compress cctx, 4842075
silesia, level 4, compress cctx, 4779186
silesia, level 5, compress cctx, 4666323
silesia, level 6, compress cctx, 4603066
silesia, level 7, compress cctx, 4566984
silesia, level 9, compress cctx, 4543018
silesia, level 13, compress cctx, 4493990
silesia, level 16, compress cctx, 4359864
silesia, level 19, compress cctx, 4296880
silesia, long distance mode, compress cctx, 4842075
silesia, multithreaded, compress cctx, 4842075
silesia, multithreaded long distance mode, compress cctx, 4842075
silesia, small window log, compress cctx, 7082951
silesia, small hash log, compress cctx, 6526141
silesia, small chain log, compress cctx, 4912197
silesia, explicit params, compress cctx, 4794052
silesia, uncompressed literals, compress cctx, 4842075
silesia, uncompressed literals optimal, compress cctx, 4296880
silesia, huffman literals, compress cctx, 6172178
silesia, multithreaded with advanced params, compress cctx, 4842075
github, level -5, compress cctx, 204411
github, level -5 with dict, compress cctx, 47294
github, level -3, compress cctx, 190643
github, level -3, compress cctx, 193253
github, level -3 with dict, compress cctx, 48047
github, level -1, compress cctx, 175568
github, level -1, compress cctx, 175468
github, level -1 with dict, compress cctx, 43527
github, level 0, compress cctx, 136335
github, level 0, compress cctx, 136332
github, level 0 with dict, compress cctx, 41534
github, level 1, compress cctx, 142465
github, level 1, compress cctx, 142365
github, level 1 with dict, compress cctx, 42157
github, level 3, compress cctx, 136335
github, level 3, compress cctx, 136332
github, level 3 with dict, compress cctx, 41534
github, level 4, compress cctx, 136199
github, level 4 with dict, compress cctx, 41725
@@ -86,231 +86,235 @@ github, level 16, compress
github, level 16 with dict, compress cctx, 37568
github, level 19, compress cctx, 134064
github, level 19 with dict, compress cctx, 37567
github, long distance mode, compress cctx, 141102
github, multithreaded, compress cctx, 141102
github, multithreaded long distance mode, compress cctx, 141102
github, small window log, compress cctx, 141102
github, long distance mode, compress cctx, 141069
github, multithreaded, compress cctx, 141069
github, multithreaded long distance mode, compress cctx, 141069
github, small window log, compress cctx, 141069
github, small hash log, compress cctx, 138949
github, small chain log, compress cctx, 139242
github, explicit params, compress cctx, 140932
github, uncompressed literals, compress cctx, 136335
github, uncompressed literals, compress cctx, 136332
github, uncompressed literals optimal, compress cctx, 134064
github, huffman literals, compress cctx, 175568
github, multithreaded with advanced params, compress cctx, 141102
silesia, level -5, zstdcli, 6737655
silesia, level -3, zstdcli, 6444725
silesia, level -1, zstdcli, 6178508
silesia, level 0, zstdcli, 4849600
silesia, level 1, zstdcli, 5313252
silesia, level 3, zstdcli, 4849600
silesia, level 4, zstdcli, 4787018
silesia, level 5, zstdcli, 4707842
silesia, level 6, zstdcli, 4666431
silesia, level 7, zstdcli, 4603429
silesia, level 9, zstdcli, 4546049
silesia, level 13, zstdcli, 4482183
silesia, level 16, zstdcli, 4360299
silesia, level 19, zstdcli, 4283285
silesia, long distance mode, zstdcli, 4840806
silesia, multithreaded, zstdcli, 4849600
silesia, multithreaded long distance mode, zstdcli, 4840806
silesia, small window log, zstdcli, 7095967
github, huffman literals, compress cctx, 175468
github, multithreaded with advanced params, compress cctx, 141069
silesia, level -5, zstdcli, 6852472
silesia, level -3, zstdcli, 6503461
silesia, level -1, zstdcli, 6172226
silesia, level 0, zstdcli, 4842123
silesia, level 1, zstdcli, 5306474
silesia, level 3, zstdcli, 4842123
silesia, level 4, zstdcli, 4779234
silesia, level 5, zstdcli, 4666371
silesia, level 6, zstdcli, 4603114
silesia, level 7, zstdcli, 4567032
silesia, level 9, zstdcli, 4543066
silesia, level 13, zstdcli, 4494038
silesia, level 16, zstdcli, 4359912
silesia, level 19, zstdcli, 4296928
silesia, long distance mode, zstdcli, 4833785
silesia, multithreaded, zstdcli, 4842123
silesia, multithreaded long distance mode, zstdcli, 4833785
silesia, small window log, zstdcli, 7095048
silesia, small hash log, zstdcli, 6526189
silesia, small chain log, zstdcli, 4912245
silesia, explicit params, zstdcli, 4795856
silesia, uncompressed literals, zstdcli, 5128030
silesia, uncompressed literals optimal, zstdcli, 4317944
silesia, huffman literals, zstdcli, 5326316
silesia, multithreaded with advanced params, zstdcli, 5128030
silesia.tar, level -5, zstdcli, 6738934
silesia.tar, level -3, zstdcli, 6448419
silesia.tar, level -1, zstdcli, 6186912
silesia.tar, level 0, zstdcli, 4861512
silesia.tar, level 1, zstdcli, 5336318
silesia.tar, level 3, zstdcli, 4861512
silesia.tar, level 4, zstdcli, 4800529
silesia.tar, level 5, zstdcli, 4720121
silesia.tar, level 6, zstdcli, 4678661
silesia.tar, level 7, zstdcli, 4614424
silesia.tar, level 9, zstdcli, 4556062
silesia.tar, level 13, zstdcli, 4491768
silesia.tar, level 16, zstdcli, 4356831
silesia.tar, level 19, zstdcli, 4264491
silesia.tar, no source size, zstdcli, 4861508
silesia.tar, long distance mode, zstdcli, 4853226
silesia.tar, multithreaded, zstdcli, 4861512
silesia.tar, multithreaded long distance mode, zstdcli, 4853226
silesia.tar, small window log, zstdcli, 7101576
silesia.tar, small hash log, zstdcli, 6529290
silesia, explicit params, zstdcli, 4795432
silesia, uncompressed literals, zstdcli, 5120614
silesia, uncompressed literals optimal, zstdcli, 4319566
silesia, huffman literals, zstdcli, 5321394
silesia, multithreaded with advanced params, zstdcli, 5120614
silesia.tar, level -5, zstdcli, 6853994
silesia.tar, level -3, zstdcli, 6506742
silesia.tar, level -1, zstdcli, 6179765
silesia.tar, level 0, zstdcli, 4854164
silesia.tar, level 1, zstdcli, 5328534
silesia.tar, level 3, zstdcli, 4854164
silesia.tar, level 4, zstdcli, 4792352
silesia.tar, level 5, zstdcli, 4678682
silesia.tar, level 6, zstdcli, 4614125
silesia.tar, level 7, zstdcli, 4578719
silesia.tar, level 9, zstdcli, 4552903
silesia.tar, level 13, zstdcli, 4502960
silesia.tar, level 16, zstdcli, 4360531
silesia.tar, level 19, zstdcli, 4267270
silesia.tar, no source size, zstdcli, 4854160
silesia.tar, long distance mode, zstdcli, 4845745
silesia.tar, multithreaded, zstdcli, 4854164
silesia.tar, multithreaded long distance mode, zstdcli, 4845745
silesia.tar, small window log, zstdcli, 7100701
silesia.tar, small hash log, zstdcli, 6529289
silesia.tar, small chain log, zstdcli, 4917022
silesia.tar, explicit params, zstdcli, 4821274
silesia.tar, uncompressed literals, zstdcli, 5129559
silesia.tar, uncompressed literals optimal, zstdcli, 4307457
silesia.tar, huffman literals, zstdcli, 5347610
silesia.tar, multithreaded with advanced params, zstdcli, 5129559
github, level -5, zstdcli, 207285
silesia.tar, explicit params, zstdcli, 4820713
silesia.tar, uncompressed literals, zstdcli, 5122571
silesia.tar, uncompressed literals optimal, zstdcli, 4310145
silesia.tar, huffman literals, zstdcli, 5342054
silesia.tar, multithreaded with advanced params, zstdcli, 5122571
github, level -5, zstdcli, 206411
github, level -5 with dict, zstdcli, 48718
github, level -3, zstdcli, 192643
github, level -3, zstdcli, 195253
github, level -3 with dict, zstdcli, 47395
github, level -1, zstdcli, 177568
github, level -1, zstdcli, 177468
github, level -1 with dict, zstdcli, 45170
github, level 0, zstdcli, 138335
github, level 0, zstdcli, 138332
github, level 0 with dict, zstdcli, 43148
github, level 1, zstdcli, 144465
github, level 1, zstdcli, 144365
github, level 1 with dict, zstdcli, 43682
github, level 3, zstdcli, 138335
github, level 3, zstdcli, 138332
github, level 3 with dict, zstdcli, 43148
github, level 4, zstdcli, 138199
github, level 4 with dict, zstdcli, 43251
github, level 5, zstdcli, 137121
github, level 5 with dict, zstdcli, 40728
github, level 6, zstdcli, 137122
github, level 6 with dict, zstdcli, 40630
github, level 6 with dict, zstdcli, 40636
github, level 7, zstdcli, 137122
github, level 7 with dict, zstdcli, 40747
github, level 7 with dict, zstdcli, 40745
github, level 9, zstdcli, 137122
github, level 9 with dict, zstdcli, 41338
github, level 9 with dict, zstdcli, 41393
github, level 13, zstdcli, 136064
github, level 13 with dict, zstdcli, 41743
github, level 13 with dict, zstdcli, 41900
github, level 16, zstdcli, 136064
github, level 16 with dict, zstdcli, 39577
github, level 19, zstdcli, 136064
github, level 19 with dict, zstdcli, 39576
github, long distance mode, zstdcli, 138335
github, multithreaded, zstdcli, 138335
github, multithreaded long distance mode, zstdcli, 138335
github, small window log, zstdcli, 138335
github, long distance mode, zstdcli, 138332
github, multithreaded, zstdcli, 138332
github, multithreaded long distance mode, zstdcli, 138332
github, small window log, zstdcli, 138332
github, small hash log, zstdcli, 137590
github, small chain log, zstdcli, 138341
github, explicit params, zstdcli, 136197
github, uncompressed literals, zstdcli, 167915
github, uncompressed literals, zstdcli, 167911
github, uncompressed literals optimal, zstdcli, 159227
github, huffman literals, zstdcli, 144465
github, multithreaded with advanced params, zstdcli, 167915
github.tar, level -5, zstdcli, 46860
github.tar, level -5 with dict, zstdcli, 44575
github.tar, level -3, zstdcli, 43758
github.tar, level -3 with dict, zstdcli, 41451
github.tar, level -1, zstdcli, 42494
github.tar, level -1 with dict, zstdcli, 41135
github.tar, level 0, zstdcli, 38445
github, huffman literals, zstdcli, 144365
github, multithreaded with advanced params, zstdcli, 167911
github.tar, level -5, zstdcli, 52114
github.tar, level -5 with dict, zstdcli, 46502
github.tar, level -3, zstdcli, 45682
github.tar, level -3 with dict, zstdcli, 42181
github.tar, level -1, zstdcli, 42564
github.tar, level -1 with dict, zstdcli, 41140
github.tar, level 0, zstdcli, 38835
github.tar, level 0 with dict, zstdcli, 37999
github.tar, level 1, zstdcli, 39269
github.tar, level 1 with dict, zstdcli, 38284
github.tar, level 3, zstdcli, 38445
github.tar, level 1, zstdcli, 39204
github.tar, level 1 with dict, zstdcli, 38288
github.tar, level 3, zstdcli, 38835
github.tar, level 3 with dict, zstdcli, 37999
github.tar, level 4, zstdcli, 38471
github.tar, level 4, zstdcli, 38897
github.tar, level 4 with dict, zstdcli, 37952
github.tar, level 5, zstdcli, 39697
github.tar, level 5 with dict, zstdcli, 39032
github.tar, level 6, zstdcli, 39625
github.tar, level 6 with dict, zstdcli, 38614
github.tar, level 7, zstdcli, 39217
github.tar, level 7 with dict, zstdcli, 37871
github.tar, level 9, zstdcli, 36762
github.tar, level 9 with dict, zstdcli, 36641
github.tar, level 13, zstdcli, 35625
github.tar, level 13 with dict, zstdcli, 38730
github.tar, level 16, zstdcli, 40259
github.tar, level 16 with dict, zstdcli, 33643
github.tar, level 19, zstdcli, 32841
github.tar, level 19 with dict, zstdcli, 32899
github.tar, no source size, zstdcli, 38442
github.tar, level 5, zstdcli, 39655
github.tar, level 5 with dict, zstdcli, 39071
github.tar, level 6, zstdcli, 39286
github.tar, level 6 with dict, zstdcli, 38638
github.tar, level 7, zstdcli, 38114
github.tar, level 7 with dict, zstdcli, 37886
github.tar, level 9, zstdcli, 36764
github.tar, level 9 with dict, zstdcli, 36632
github.tar, level 13, zstdcli, 35505
github.tar, level 13 with dict, zstdcli, 37134
github.tar, level 16, zstdcli, 40475
github.tar, level 16 with dict, zstdcli, 33382
github.tar, level 19, zstdcli, 32138
github.tar, level 19 with dict, zstdcli, 32713
github.tar, no source size, zstdcli, 38832
github.tar, no source size with dict, zstdcli, 38004
github.tar, long distance mode, zstdcli, 39730
github.tar, multithreaded, zstdcli, 38445
github.tar, multithreaded long distance mode, zstdcli, 39730
github.tar, long distance mode, zstdcli, 40236
github.tar, multithreaded, zstdcli, 38835
github.tar, multithreaded long distance mode, zstdcli, 40236
github.tar, small window log, zstdcli, 198544
github.tar, small hash log, zstdcli, 129874
github.tar, small chain log, zstdcli, 41673
github.tar, explicit params, zstdcli, 41227
github.tar, uncompressed literals, zstdcli, 41126
github.tar, uncompressed literals optimal, zstdcli, 35392
github.tar, huffman literals, zstdcli, 38781
github.tar, multithreaded with advanced params, zstdcli, 41126
silesia, level -5, advanced one pass, 6737607
silesia, level -3, advanced one pass, 6444677
silesia, level -1, advanced one pass, 6178460
silesia, level 0, advanced one pass, 4849552
silesia, level 1, advanced one pass, 5313204
silesia, level 3, advanced one pass, 4849552
silesia, level 4, advanced one pass, 4786970
silesia, level 5 row 1, advanced one pass, 4710236
silesia, level 5 row 2, advanced one pass, 4707794
silesia, level 5, advanced one pass, 4707794
silesia, level 6, advanced one pass, 4666383
silesia, level 7 row 1, advanced one pass, 4596296
silesia, level 7 row 2, advanced one pass, 4603381
silesia, level 7, advanced one pass, 4603381
silesia, level 9, advanced one pass, 4546001
silesia, level 12 row 1, advanced one pass, 4519288
silesia, level 12 row 2, advanced one pass, 4521397
silesia, level 13, advanced one pass, 4482135
silesia, level 16, advanced one pass, 4360251
silesia, level 19, advanced one pass, 4283237
silesia, no source size, advanced one pass, 4849552
silesia, long distance mode, advanced one pass, 4840738
silesia, multithreaded, advanced one pass, 4849552
silesia, multithreaded long distance mode, advanced one pass, 4840758
silesia, small window log, advanced one pass, 7095919
github.tar, explicit params, zstdcli, 41385
github.tar, uncompressed literals, zstdcli, 41529
github.tar, uncompressed literals optimal, zstdcli, 35401
github.tar, huffman literals, zstdcli, 38857
github.tar, multithreaded with advanced params, zstdcli, 41529
silesia, level -5, advanced one pass, 6852424
silesia, level -3, advanced one pass, 6503413
silesia, level -1, advanced one pass, 6172178
silesia, level 0, advanced one pass, 4842075
silesia, level 1, advanced one pass, 5306426
silesia, level 3, advanced one pass, 4842075
silesia, level 4, advanced one pass, 4779186
silesia, level 5 row 1, advanced one pass, 4666323
silesia, level 5 row 2, advanced one pass, 4670136
silesia, level 5, advanced one pass, 4666323
silesia, level 6, advanced one pass, 4603066
silesia, level 7 row 1, advanced one pass, 4566984
silesia, level 7 row 2, advanced one pass, 4564868
silesia, level 7, advanced one pass, 4566984
silesia, level 9, advanced one pass, 4543018
silesia, level 11 row 1, advanced one pass, 4505046
silesia, level 11 row 2, advanced one pass, 4503116
silesia, level 12 row 1, advanced one pass, 4505046
silesia, level 12 row 2, advanced one pass, 4503116
silesia, level 13, advanced one pass, 4493990
silesia, level 16, advanced one pass, 4359864
silesia, level 19, advanced one pass, 4296880
silesia, no source size, advanced one pass, 4842075
silesia, long distance mode, advanced one pass, 4833710
silesia, multithreaded, advanced one pass, 4842075
silesia, multithreaded long distance mode, advanced one pass, 4833737
silesia, small window log, advanced one pass, 7095000
silesia, small hash log, advanced one pass, 6526141
silesia, small chain log, advanced one pass, 4912197
silesia, explicit params, advanced one pass, 4795856
silesia, uncompressed literals, advanced one pass, 5127982
silesia, uncompressed literals optimal, advanced one pass, 4317896
silesia, huffman literals, advanced one pass, 5326268
silesia, multithreaded with advanced params, advanced one pass, 5127982
silesia.tar, level -5, advanced one pass, 6738593
silesia.tar, level -3, advanced one pass, 6446372
silesia.tar, level -1, advanced one pass, 6186042
silesia.tar, level 0, advanced one pass, 4861425
silesia.tar, level 1, advanced one pass, 5334885
silesia.tar, level 3, advanced one pass, 4861425
silesia.tar, level 4, advanced one pass, 4799630
silesia.tar, level 5 row 1, advanced one pass, 4722324
silesia.tar, level 5 row 2, advanced one pass, 4719256
silesia.tar, level 5, advanced one pass, 4719256
silesia.tar, level 6, advanced one pass, 4677721
silesia.tar, level 7 row 1, advanced one pass, 4606715
silesia.tar, level 7 row 2, advanced one pass, 4613541
silesia.tar, level 7, advanced one pass, 4613541
silesia.tar, level 9, advanced one pass, 4555426
silesia.tar, level 12 row 1, advanced one pass, 4529459
silesia.tar, level 12 row 2, advanced one pass, 4530256
silesia.tar, level 13, advanced one pass, 4491764
silesia.tar, level 16, advanced one pass, 4356827
silesia.tar, level 19, advanced one pass, 4264487
silesia.tar, no source size, advanced one pass, 4861425
silesia.tar, long distance mode, advanced one pass, 4847754
silesia.tar, multithreaded, advanced one pass, 4861508
silesia.tar, multithreaded long distance mode, advanced one pass, 4853222
silesia.tar, small window log, advanced one pass, 7101530
silesia.tar, small hash log, advanced one pass, 6529232
silesia, explicit params, advanced one pass, 4795432
silesia, uncompressed literals, advanced one pass, 5120566
silesia, uncompressed literals optimal, advanced one pass, 4319518
silesia, huffman literals, advanced one pass, 5321346
silesia, multithreaded with advanced params, advanced one pass, 5120566
silesia.tar, level -5, advanced one pass, 6853608
silesia.tar, level -3, advanced one pass, 6505969
silesia.tar, level -1, advanced one pass, 6179026
silesia.tar, level 0, advanced one pass, 4854086
silesia.tar, level 1, advanced one pass, 5327373
silesia.tar, level 3, advanced one pass, 4854086
silesia.tar, level 4, advanced one pass, 4791503
silesia.tar, level 5 row 1, advanced one pass, 4677740
silesia.tar, level 5 row 2, advanced one pass, 4682161
silesia.tar, level 5, advanced one pass, 4677740
silesia.tar, level 6, advanced one pass, 4613242
silesia.tar, level 7 row 1, advanced one pass, 4576661
silesia.tar, level 7 row 2, advanced one pass, 4575393
silesia.tar, level 7, advanced one pass, 4576661
silesia.tar, level 9, advanced one pass, 4552899
silesia.tar, level 11 row 1, advanced one pass, 4514432
silesia.tar, level 11 row 2, advanced one pass, 4513604
silesia.tar, level 12 row 1, advanced one pass, 4514049
silesia.tar, level 12 row 2, advanced one pass, 4513797
silesia.tar, level 13, advanced one pass, 4502956
silesia.tar, level 16, advanced one pass, 4360527
silesia.tar, level 19, advanced one pass, 4267266
silesia.tar, no source size, advanced one pass, 4854086
silesia.tar, long distance mode, advanced one pass, 4840452
silesia.tar, multithreaded, advanced one pass, 4854160
silesia.tar, multithreaded long distance mode, advanced one pass, 4845741
silesia.tar, small window log, advanced one pass, 7100655
silesia.tar, small hash log, advanced one pass, 6529231
silesia.tar, small chain log, advanced one pass, 4917041
silesia.tar, explicit params, advanced one pass, 4807380
silesia.tar, uncompressed literals, advanced one pass, 5129458
silesia.tar, uncompressed literals optimal, advanced one pass, 4307453
silesia.tar, huffman literals, advanced one pass, 5347335
silesia.tar, multithreaded with advanced params, advanced one pass, 5129555
github, level -5, advanced one pass, 205285
silesia.tar, explicit params, advanced one pass, 4806855
silesia.tar, uncompressed literals, advanced one pass, 5122473
silesia.tar, uncompressed literals optimal, advanced one pass, 4310141
silesia.tar, huffman literals, advanced one pass, 5341685
silesia.tar, multithreaded with advanced params, advanced one pass, 5122567
github, level -5, advanced one pass, 204411
github, level -5 with dict, advanced one pass, 46718
github, level -3, advanced one pass, 190643
github, level -3, advanced one pass, 193253
github, level -3 with dict, advanced one pass, 45395
github, level -1, advanced one pass, 175568
github, level -1, advanced one pass, 175468
github, level -1 with dict, advanced one pass, 43170
github, level 0, advanced one pass, 136335
github, level 0, advanced one pass, 136332
github, level 0 with dict, advanced one pass, 41148
github, level 0 with dict dms, advanced one pass, 41148
github, level 0 with dict dds, advanced one pass, 41148
github, level 0 with dict copy, advanced one pass, 41124
github, level 0 with dict load, advanced one pass, 42252
github, level 1, advanced one pass, 142465
github, level 1, advanced one pass, 142365
github, level 1 with dict, advanced one pass, 41682
github, level 1 with dict dms, advanced one pass, 41682
github, level 1 with dict dds, advanced one pass, 41682
github, level 1 with dict copy, advanced one pass, 41674
github, level 1 with dict load, advanced one pass, 43755
github, level 3, advanced one pass, 136335
github, level 3, advanced one pass, 136332
github, level 3 with dict, advanced one pass, 41148
github, level 3 with dict dms, advanced one pass, 41148
github, level 3 with dict dds, advanced one pass, 41148
@@ -322,16 +326,16 @@ github, level 4 with dict dms, advanced
github, level 4 with dict dds, advanced one pass, 41251
github, level 4 with dict copy, advanced one pass, 41216
github, level 4 with dict load, advanced one pass, 41159
github, level 5 row 1, advanced one pass, 135121
github, level 5 row 1 with dict dms, advanced one pass, 38938
github, level 5 row 1 with dict dds, advanced one pass, 38732
github, level 5 row 1 with dict copy, advanced one pass, 38934
github, level 5 row 1 with dict load, advanced one pass, 40725
github, level 5 row 2, advanced one pass, 134584
github, level 5 row 2 with dict dms, advanced one pass, 38758
github, level 5 row 2 with dict dds, advanced one pass, 38728
github, level 5 row 2 with dict copy, advanced one pass, 38759
github, level 5 row 2 with dict load, advanced one pass, 41518
github, level 5 row 1, advanced one pass, 134584
github, level 5 row 1 with dict dms, advanced one pass, 38758
github, level 5 row 1 with dict dds, advanced one pass, 38728
github, level 5 row 1 with dict copy, advanced one pass, 38759
github, level 5 row 1 with dict load, advanced one pass, 41518
github, level 5 row 2, advanced one pass, 135121
github, level 5 row 2 with dict dms, advanced one pass, 38938
github, level 5 row 2 with dict dds, advanced one pass, 38732
github, level 5 row 2 with dict copy, advanced one pass, 38934
github, level 5 row 2 with dict load, advanced one pass, 40725
github, level 5, advanced one pass, 135121
github, level 5 with dict, advanced one pass, 38758
github, level 5 with dict dms, advanced one pass, 38758
@@ -341,31 +345,41 @@ github, level 5 with dict load, advanced
github, level 6, advanced one pass, 135122
github, level 6 with dict, advanced one pass, 38671
github, level 6 with dict dms, advanced one pass, 38671
github, level 6 with dict dds, advanced one pass, 38630
github, level 6 with dict dds, advanced one pass, 38636
github, level 6 with dict copy, advanced one pass, 38669
github, level 6 with dict load, advanced one pass, 40695
github, level 7 row 1, advanced one pass, 135122
github, level 7 row 1 with dict dms, advanced one pass, 38771
github, level 7 row 1 with dict dds, advanced one pass, 38771
github, level 7 row 1 with dict copy, advanced one pass, 38745
github, level 7 row 1 with dict load, advanced one pass, 40695
github, level 7 row 2, advanced one pass, 134584
github, level 7 row 2 with dict dms, advanced one pass, 38758
github, level 7 row 2 with dict dds, advanced one pass, 38747
github, level 7 row 2 with dict copy, advanced one pass, 38755
github, level 7 row 2 with dict load, advanced one pass, 41030
github, level 7 row 1, advanced one pass, 134584
github, level 7 row 1 with dict dms, advanced one pass, 38758
github, level 7 row 1 with dict dds, advanced one pass, 38745
github, level 7 row 1 with dict copy, advanced one pass, 38755
github, level 7 row 1 with dict load, advanced one pass, 43154
github, level 7 row 2, advanced one pass, 135122
github, level 7 row 2 with dict dms, advanced one pass, 38860
github, level 7 row 2 with dict dds, advanced one pass, 38766
github, level 7 row 2 with dict copy, advanced one pass, 38834
github, level 7 row 2 with dict load, advanced one pass, 40695
github, level 7, advanced one pass, 135122
github, level 7 with dict, advanced one pass, 38758
github, level 7 with dict dms, advanced one pass, 38758
github, level 7 with dict dds, advanced one pass, 38747
github, level 7 with dict dds, advanced one pass, 38745
github, level 7 with dict copy, advanced one pass, 38755
github, level 7 with dict load, advanced one pass, 40695
github, level 9, advanced one pass, 135122
github, level 9 with dict, advanced one pass, 39437
github, level 9 with dict dms, advanced one pass, 39437
github, level 9 with dict dds, advanced one pass, 39338
github, level 9 with dict dds, advanced one pass, 39393
github, level 9 with dict copy, advanced one pass, 39398
github, level 9 with dict load, advanced one pass, 41710
github, level 11 row 1, advanced one pass, 135119
github, level 11 row 1 with dict dms, advanced one pass, 39671
github, level 11 row 1 with dict dds, advanced one pass, 39671
github, level 11 row 1 with dict copy, advanced one pass, 39651
github, level 11 row 1 with dict load, advanced one pass, 41360
github, level 11 row 2, advanced one pass, 135119
github, level 11 row 2 with dict dms, advanced one pass, 39671
github, level 11 row 2 with dict dds, advanced one pass, 39671
github, level 11 row 2 with dict copy, advanced one pass, 39651
github, level 11 row 2 with dict load, advanced one pass, 41360
github, level 12 row 1, advanced one pass, 134180
github, level 12 row 1 with dict dms, advanced one pass, 39677
github, level 12 row 1 with dict dds, advanced one pass, 39677
@@ -377,9 +391,9 @@ github, level 12 row 2 with dict dds, advanced
github, level 12 row 2 with dict copy, advanced one pass, 39677
github, level 12 row 2 with dict load, advanced one pass, 41166
github, level 13, advanced one pass, 134064
github, level 13 with dict, advanced one pass, 39743
github, level 13 with dict dms, advanced one pass, 39743
github, level 13 with dict dds, advanced one pass, 39743
github, level 13 with dict, advanced one pass, 39900
github, level 13 with dict dms, advanced one pass, 39900
github, level 13 with dict dds, advanced one pass, 39900
github, level 13 with dict copy, advanced one pass, 39948
github, level 13 with dict load, advanced one pass, 42626
github, level 16, advanced one pass, 134064
@@ -394,217 +408,231 @@ github, level 19 with dict dms, advanced
github, level 19 with dict dds, advanced one pass, 37576
github, level 19 with dict copy, advanced one pass, 37567
github, level 19 with dict load, advanced one pass, 39613
github, no source size, advanced one pass, 136335
github, no source size, advanced one pass, 136332
github, no source size with dict, advanced one pass, 41148
github, long distance mode, advanced one pass, 136335
github, multithreaded, advanced one pass, 136335
github, multithreaded long distance mode, advanced one pass, 136335
github, small window log, advanced one pass, 136335
github, long distance mode, advanced one pass, 136332
github, multithreaded, advanced one pass, 136332
github, multithreaded long distance mode, advanced one pass, 136332
github, small window log, advanced one pass, 136332
github, small hash log, advanced one pass, 135590
github, small chain log, advanced one pass, 136341
github, explicit params, advanced one pass, 137727
github, uncompressed literals, advanced one pass, 165915
github, uncompressed literals, advanced one pass, 165911
github, uncompressed literals optimal, advanced one pass, 157227
github, huffman literals, advanced one pass, 142465
github, multithreaded with advanced params, advanced one pass, 165915
github.tar, level -5, advanced one pass, 46856
github.tar, level -5 with dict, advanced one pass, 44571
github.tar, level -3, advanced one pass, 43754
github.tar, level -3 with dict, advanced one pass, 41447
github.tar, level -1, advanced one pass, 42490
github.tar, level -1 with dict, advanced one pass, 41131
github.tar, level 0, advanced one pass, 38441
github, huffman literals, advanced one pass, 142365
github, multithreaded with advanced params, advanced one pass, 165911
github.tar, level -5, advanced one pass, 52110
github.tar, level -5 with dict, advanced one pass, 46498
github.tar, level -3, advanced one pass, 45678
github.tar, level -3 with dict, advanced one pass, 42177
github.tar, level -1, advanced one pass, 42560
github.tar, level -1 with dict, advanced one pass, 41136
github.tar, level 0, advanced one pass, 38831
github.tar, level 0 with dict, advanced one pass, 37995
github.tar, level 0 with dict dms, advanced one pass, 38003
github.tar, level 0 with dict dds, advanced one pass, 38003
github.tar, level 0 with dict copy, advanced one pass, 37995
github.tar, level 0 with dict load, advanced one pass, 37956
github.tar, level 1, advanced one pass, 39265
github.tar, level 1 with dict, advanced one pass, 38280
github.tar, level 1 with dict dms, advanced one pass, 38290
github.tar, level 1 with dict dds, advanced one pass, 38290
github.tar, level 1 with dict copy, advanced one pass, 38280
github.tar, level 1 with dict load, advanced one pass, 38729
github.tar, level 3, advanced one pass, 38441
github.tar, level 1, advanced one pass, 39200
github.tar, level 1 with dict, advanced one pass, 38284
github.tar, level 1 with dict dms, advanced one pass, 38294
github.tar, level 1 with dict dds, advanced one pass, 38294
github.tar, level 1 with dict copy, advanced one pass, 38284
github.tar, level 1 with dict load, advanced one pass, 38724
github.tar, level 3, advanced one pass, 38831
github.tar, level 3 with dict, advanced one pass, 37995
github.tar, level 3 with dict dms, advanced one pass, 38003
github.tar, level 3 with dict dds, advanced one pass, 38003
github.tar, level 3 with dict copy, advanced one pass, 37995
github.tar, level 3 with dict load, advanced one pass, 37956
github.tar, level 4, advanced one pass, 38467
github.tar, level 4, advanced one pass, 38893
github.tar, level 4 with dict, advanced one pass, 37948
github.tar, level 4 with dict dms, advanced one pass, 37954
github.tar, level 4 with dict dds, advanced one pass, 37954
github.tar, level 4 with dict copy, advanced one pass, 37948
github.tar, level 4 with dict load, advanced one pass, 37927
github.tar, level 5 row 1, advanced one pass, 39788
github.tar, level 5 row 1 with dict dms, advanced one pass, 39365
github.tar, level 5 row 1 with dict dds, advanced one pass, 39233
github.tar, level 5 row 1 with dict copy, advanced one pass, 39715
github.tar, level 5 row 1 with dict load, advanced one pass, 39209
github.tar, level 5 row 2, advanced one pass, 39693
github.tar, level 5 row 2 with dict dms, advanced one pass, 39024
github.tar, level 5 row 2 with dict dds, advanced one pass, 39028
github.tar, level 5 row 2 with dict copy, advanced one pass, 39040
github.tar, level 5 row 2 with dict load, advanced one pass, 39037
github.tar, level 5, advanced one pass, 39693
github.tar, level 5 with dict, advanced one pass, 39040
github.tar, level 5 with dict dms, advanced one pass, 39024
github.tar, level 5 with dict dds, advanced one pass, 39028
github.tar, level 5 with dict copy, advanced one pass, 39040
github.tar, level 5 with dict load, advanced one pass, 39037
github.tar, level 6, advanced one pass, 39621
github.tar, level 6 with dict, advanced one pass, 38622
github.tar, level 6 with dict dms, advanced one pass, 38608
github.tar, level 6 with dict dds, advanced one pass, 38610
github.tar, level 6 with dict copy, advanced one pass, 38622
github.tar, level 6 with dict load, advanced one pass, 38962
github.tar, level 7 row 1, advanced one pass, 39206
github.tar, level 7 row 1 with dict dms, advanced one pass, 37954
github.tar, level 7 row 1 with dict dds, advanced one pass, 37954
github.tar, level 7 row 1 with dict copy, advanced one pass, 38071
github.tar, level 7 row 1 with dict load, advanced one pass, 38584
github.tar, level 7 row 2, advanced one pass, 39213
github.tar, level 7 row 2 with dict dms, advanced one pass, 37848
github.tar, level 7 row 2 with dict dds, advanced one pass, 37867
github.tar, level 7 row 2 with dict copy, advanced one pass, 37848
github.tar, level 7 row 2 with dict load, advanced one pass, 38582
github.tar, level 7, advanced one pass, 39213
github.tar, level 7 with dict, advanced one pass, 37848
github.tar, level 7 with dict dms, advanced one pass, 37848
github.tar, level 7 with dict dds, advanced one pass, 37867
github.tar, level 7 with dict copy, advanced one pass, 37848
github.tar, level 7 with dict load, advanced one pass, 38582
github.tar, level 9, advanced one pass, 36758
github.tar, level 9 with dict, advanced one pass, 36457
github.tar, level 9 with dict dms, advanced one pass, 36549
github.tar, level 9 with dict dds, advanced one pass, 36637
github.tar, level 9 with dict copy, advanced one pass, 36457
github.tar, level 9 with dict load, advanced one pass, 36350
github.tar, level 12 row 1, advanced one pass, 36435
github.tar, level 5 row 1, advanced one pass, 39651
github.tar, level 5 row 1 with dict dms, advanced one pass, 39059
github.tar, level 5 row 1 with dict dds, advanced one pass, 39067
github.tar, level 5 row 1 with dict copy, advanced one pass, 39082
github.tar, level 5 row 1 with dict load, advanced one pass, 38999
github.tar, level 5 row 2, advanced one pass, 39701
github.tar, level 5 row 2 with dict dms, advanced one pass, 39365
github.tar, level 5 row 2 with dict dds, advanced one pass, 39233
github.tar, level 5 row 2 with dict copy, advanced one pass, 39715
github.tar, level 5 row 2 with dict load, advanced one pass, 39158
github.tar, level 5, advanced one pass, 39651
github.tar, level 5 with dict, advanced one pass, 39082
github.tar, level 5 with dict dms, advanced one pass, 39059
github.tar, level 5 with dict dds, advanced one pass, 39067
github.tar, level 5 with dict copy, advanced one pass, 39082
github.tar, level 5 with dict load, advanced one pass, 38999
github.tar, level 6, advanced one pass, 39282
github.tar, level 6 with dict, advanced one pass, 38656
github.tar, level 6 with dict dms, advanced one pass, 38636
github.tar, level 6 with dict dds, advanced one pass, 38634
github.tar, level 6 with dict copy, advanced one pass, 38656
github.tar, level 6 with dict load, advanced one pass, 38648
github.tar, level 7 row 1, advanced one pass, 38110
github.tar, level 7 row 1 with dict dms, advanced one pass, 37858
github.tar, level 7 row 1 with dict dds, advanced one pass, 37882
github.tar, level 7 row 1 with dict copy, advanced one pass, 37865
github.tar, level 7 row 1 with dict load, advanced one pass, 37436
github.tar, level 7 row 2, advanced one pass, 38077
github.tar, level 7 row 2 with dict dms, advanced one pass, 38012
github.tar, level 7 row 2 with dict dds, advanced one pass, 38014
github.tar, level 7 row 2 with dict copy, advanced one pass, 38101
github.tar, level 7 row 2 with dict load, advanced one pass, 37402
github.tar, level 7, advanced one pass, 38110
github.tar, level 7 with dict, advanced one pass, 37865
github.tar, level 7 with dict dms, advanced one pass, 37858
github.tar, level 7 with dict dds, advanced one pass, 37882
github.tar, level 7 with dict copy, advanced one pass, 37865
github.tar, level 7 with dict load, advanced one pass, 37436
github.tar, level 9, advanced one pass, 36760
github.tar, level 9 with dict, advanced one pass, 36484
github.tar, level 9 with dict dms, advanced one pass, 36567
github.tar, level 9 with dict dds, advanced one pass, 36628
github.tar, level 9 with dict copy, advanced one pass, 36484
github.tar, level 9 with dict load, advanced one pass, 36401
github.tar, level 11 row 1, advanced one pass, 36081
github.tar, level 11 row 1 with dict dms, advanced one pass, 36963
github.tar, level 11 row 1 with dict dds, advanced one pass, 36963
github.tar, level 11 row 1 with dict copy, advanced one pass, 36557
github.tar, level 11 row 1 with dict load, advanced one pass, 36434
github.tar, level 11 row 2, advanced one pass, 36110
github.tar, level 11 row 2 with dict dms, advanced one pass, 36963
github.tar, level 11 row 2 with dict dds, advanced one pass, 36963
github.tar, level 11 row 2 with dict copy, advanced one pass, 36557
github.tar, level 11 row 2 with dict load, advanced one pass, 36459
github.tar, level 12 row 1, advanced one pass, 36081
github.tar, level 12 row 1 with dict dms, advanced one pass, 36986
github.tar, level 12 row 1 with dict dds, advanced one pass, 36986
github.tar, level 12 row 1 with dict copy, advanced one pass, 36609
github.tar, level 12 row 1 with dict load, advanced one pass, 36419
github.tar, level 12 row 2, advanced one pass, 36435
github.tar, level 12 row 1 with dict load, advanced one pass, 36434
github.tar, level 12 row 2, advanced one pass, 36110
github.tar, level 12 row 2 with dict dms, advanced one pass, 36986
github.tar, level 12 row 2 with dict dds, advanced one pass, 36986
github.tar, level 12 row 2 with dict copy, advanced one pass, 36609
github.tar, level 12 row 2 with dict load, advanced one pass, 36424
github.tar, level 13, advanced one pass, 35621
github.tar, level 13 with dict, advanced one pass, 38726
github.tar, level 13 with dict dms, advanced one pass, 38903
github.tar, level 13 with dict dds, advanced one pass, 38903
github.tar, level 13 with dict copy, advanced one pass, 38726
github.tar, level 13 with dict load, advanced one pass, 36372
github.tar, level 16, advanced one pass, 40255
github.tar, level 16 with dict, advanced one pass, 33639
github.tar, level 16 with dict dms, advanced one pass, 33544
github.tar, level 16 with dict dds, advanced one pass, 33544
github.tar, level 16 with dict copy, advanced one pass, 33639
github.tar, level 16 with dict load, advanced one pass, 39353
github.tar, level 19, advanced one pass, 32837
github.tar, level 19 with dict, advanced one pass, 32895
github.tar, level 19 with dict dms, advanced one pass, 32672
github.tar, level 19 with dict dds, advanced one pass, 32672
github.tar, level 19 with dict copy, advanced one pass, 32895
github.tar, level 19 with dict load, advanced one pass, 32676
github.tar, no source size, advanced one pass, 38441
github.tar, level 12 row 2 with dict load, advanced one pass, 36459
github.tar, level 13, advanced one pass, 35501
github.tar, level 13 with dict, advanced one pass, 37130
github.tar, level 13 with dict dms, advanced one pass, 37220
github.tar, level 13 with dict dds, advanced one pass, 37220
github.tar, level 13 with dict copy, advanced one pass, 37130
github.tar, level 13 with dict load, advanced one pass, 36010
github.tar, level 16, advanced one pass, 40471
github.tar, level 16 with dict, advanced one pass, 33378
github.tar, level 16 with dict dms, advanced one pass, 33213
github.tar, level 16 with dict dds, advanced one pass, 33213
github.tar, level 16 with dict copy, advanced one pass, 33378
github.tar, level 16 with dict load, advanced one pass, 39081
github.tar, level 19, advanced one pass, 32134
github.tar, level 19 with dict, advanced one pass, 32709
github.tar, level 19 with dict dms, advanced one pass, 32553
github.tar, level 19 with dict dds, advanced one pass, 32553
github.tar, level 19 with dict copy, advanced one pass, 32709
github.tar, level 19 with dict load, advanced one pass, 32474
github.tar, no source size, advanced one pass, 38831
github.tar, no source size with dict, advanced one pass, 37995
github.tar, long distance mode, advanced one pass, 39757
github.tar, multithreaded, advanced one pass, 38441
github.tar, multithreaded long distance mode, advanced one pass, 39726
github.tar, long distance mode, advanced one pass, 40252
github.tar, multithreaded, advanced one pass, 38831
github.tar, multithreaded long distance mode, advanced one pass, 40232
github.tar, small window log, advanced one pass, 198540
github.tar, small hash log, advanced one pass, 129870
github.tar, small chain log, advanced one pass, 41669
github.tar, explicit params, advanced one pass, 41227
github.tar, uncompressed literals, advanced one pass, 41122
github.tar, uncompressed literals optimal, advanced one pass, 35388
github.tar, huffman literals, advanced one pass, 38777
github.tar, multithreaded with advanced params, advanced one pass, 41122
silesia, level -5, advanced one pass small out, 6737607
silesia, level -3, advanced one pass small out, 6444677
silesia, level -1, advanced one pass small out, 6178460
silesia, level 0, advanced one pass small out, 4849552
silesia, level 1, advanced one pass small out, 5313204
silesia, level 3, advanced one pass small out, 4849552
silesia, level 4, advanced one pass small out, 4786970
silesia, level 5 row 1, advanced one pass small out, 4710236
silesia, level 5 row 2, advanced one pass small out, 4707794
silesia, level 5, advanced one pass small out, 4707794
silesia, level 6, advanced one pass small out, 4666383
silesia, level 7 row 1, advanced one pass small out, 4596296
silesia, level 7 row 2, advanced one pass small out, 4603381
silesia, level 7, advanced one pass small out, 4603381
silesia, level 9, advanced one pass small out, 4546001
silesia, level 12 row 1, advanced one pass small out, 4519288
silesia, level 12 row 2, advanced one pass small out, 4521397
silesia, level 13, advanced one pass small out, 4482135
silesia, level 16, advanced one pass small out, 4360251
silesia, level 19, advanced one pass small out, 4283237
silesia, no source size, advanced one pass small out, 4849552
silesia, long distance mode, advanced one pass small out, 4840738
silesia, multithreaded, advanced one pass small out, 4849552
silesia, multithreaded long distance mode, advanced one pass small out, 4840758
silesia, small window log, advanced one pass small out, 7095919
github.tar, explicit params, advanced one pass, 41385
github.tar, uncompressed literals, advanced one pass, 41525
github.tar, uncompressed literals optimal, advanced one pass, 35397
github.tar, huffman literals, advanced one pass, 38853
github.tar, multithreaded with advanced params, advanced one pass, 41525
silesia, level -5, advanced one pass small out, 6852424
silesia, level -3, advanced one pass small out, 6503413
silesia, level -1, advanced one pass small out, 6172178
silesia, level 0, advanced one pass small out, 4842075
silesia, level 1, advanced one pass small out, 5306426
silesia, level 3, advanced one pass small out, 4842075
silesia, level 4, advanced one pass small out, 4779186
silesia, level 5 row 1, advanced one pass small out, 4666323
silesia, level 5 row 2, advanced one pass small out, 4670136
silesia, level 5, advanced one pass small out, 4666323
silesia, level 6, advanced one pass small out, 4603066
silesia, level 7 row 1, advanced one pass small out, 4566984
silesia, level 7 row 2, advanced one pass small out, 4564868
silesia, level 7, advanced one pass small out, 4566984
silesia, level 9, advanced one pass small out, 4543018
silesia, level 11 row 1, advanced one pass small out, 4505046
silesia, level 11 row 2, advanced one pass small out, 4503116
silesia, level 12 row 1, advanced one pass small out, 4505046
silesia, level 12 row 2, advanced one pass small out, 4503116
silesia, level 13, advanced one pass small out, 4493990
silesia, level 16, advanced one pass small out, 4359864
silesia, level 19, advanced one pass small out, 4296880
silesia, no source size, advanced one pass small out, 4842075
silesia, long distance mode, advanced one pass small out, 4833710
silesia, multithreaded, advanced one pass small out, 4842075
silesia, multithreaded long distance mode, advanced one pass small out, 4833737
silesia, small window log, advanced one pass small out, 7095000
silesia, small hash log, advanced one pass small out, 6526141
silesia, small chain log, advanced one pass small out, 4912197
silesia, explicit params, advanced one pass small out, 4795856
silesia, uncompressed literals, advanced one pass small out, 5127982
silesia, uncompressed literals optimal, advanced one pass small out, 4317896
silesia, huffman literals, advanced one pass small out, 5326268
silesia, multithreaded with advanced params, advanced one pass small out, 5127982
silesia.tar, level -5, advanced one pass small out, 6738593
silesia.tar, level -3, advanced one pass small out, 6446372
silesia.tar, level -1, advanced one pass small out, 6186042
silesia.tar, level 0, advanced one pass small out, 4861425
silesia.tar, level 1, advanced one pass small out, 5334885
silesia.tar, level 3, advanced one pass small out, 4861425
silesia.tar, level 4, advanced one pass small out, 4799630
silesia.tar, level 5 row 1, advanced one pass small out, 4722324
silesia.tar, level 5 row 2, advanced one pass small out, 4719256
silesia.tar, level 5, advanced one pass small out, 4719256
silesia.tar, level 6, advanced one pass small out, 4677721
silesia.tar, level 7 row 1, advanced one pass small out, 4606715
silesia.tar, level 7 row 2, advanced one pass small out, 4613541
silesia.tar, level 7, advanced one pass small out, 4613541
silesia.tar, level 9, advanced one pass small out, 4555426
silesia.tar, level 12 row 1, advanced one pass small out, 4529459
silesia.tar, level 12 row 2, advanced one pass small out, 4530256
silesia.tar, level 13, advanced one pass small out, 4491764
silesia.tar, level 16, advanced one pass small out, 4356827
silesia.tar, level 19, advanced one pass small out, 4264487
silesia.tar, no source size, advanced one pass small out, 4861425
silesia.tar, long distance mode, advanced one pass small out, 4847754
silesia.tar, multithreaded, advanced one pass small out, 4861508
silesia.tar, multithreaded long distance mode, advanced one pass small out, 4853222
silesia.tar, small window log, advanced one pass small out, 7101530
silesia.tar, small hash log, advanced one pass small out, 6529232
silesia, explicit params, advanced one pass small out, 4795432
silesia, uncompressed literals, advanced one pass small out, 5120566
silesia, uncompressed literals optimal, advanced one pass small out, 4319518
silesia, huffman literals, advanced one pass small out, 5321346
silesia, multithreaded with advanced params, advanced one pass small out, 5120566
silesia.tar, level -5, advanced one pass small out, 6853608
silesia.tar, level -3, advanced one pass small out, 6505969
silesia.tar, level -1, advanced one pass small out, 6179026
silesia.tar, level 0, advanced one pass small out, 4854086
silesia.tar, level 1, advanced one pass small out, 5327373
silesia.tar, level 3, advanced one pass small out, 4854086
silesia.tar, level 4, advanced one pass small out, 4791503
silesia.tar, level 5 row 1, advanced one pass small out, 4677740
silesia.tar, level 5 row 2, advanced one pass small out, 4682161
silesia.tar, level 5, advanced one pass small out, 4677740
silesia.tar, level 6, advanced one pass small out, 4613242
silesia.tar, level 7 row 1, advanced one pass small out, 4576661
silesia.tar, level 7 row 2, advanced one pass small out, 4575393
silesia.tar, level 7, advanced one pass small out, 4576661
silesia.tar, level 9, advanced one pass small out, 4552899
silesia.tar, level 11 row 1, advanced one pass small out, 4514432
silesia.tar, level 11 row 2, advanced one pass small out, 4513604
silesia.tar, level 12 row 1, advanced one pass small out, 4514049
silesia.tar, level 12 row 2, advanced one pass small out, 4513797
silesia.tar, level 13, advanced one pass small out, 4502956
silesia.tar, level 16, advanced one pass small out, 4360527
silesia.tar, level 19, advanced one pass small out, 4267266
silesia.tar, no source size, advanced one pass small out, 4854086
silesia.tar, long distance mode, advanced one pass small out, 4840452
silesia.tar, multithreaded, advanced one pass small out, 4854160
silesia.tar, multithreaded long distance mode, advanced one pass small out, 4845741
silesia.tar, small window log, advanced one pass small out, 7100655
silesia.tar, small hash log, advanced one pass small out, 6529231
silesia.tar, small chain log, advanced one pass small out, 4917041
silesia.tar, explicit params, advanced one pass small out, 4807380
silesia.tar, uncompressed literals, advanced one pass small out, 5129458
silesia.tar, uncompressed literals optimal, advanced one pass small out, 4307453
silesia.tar, huffman literals, advanced one pass small out, 5347335
silesia.tar, multithreaded with advanced params, advanced one pass small out, 5129555
github, level -5, advanced one pass small out, 205285
silesia.tar, explicit params, advanced one pass small out, 4806855
silesia.tar, uncompressed literals, advanced one pass small out, 5122473
silesia.tar, uncompressed literals optimal, advanced one pass small out, 4310141
silesia.tar, huffman literals, advanced one pass small out, 5341685
silesia.tar, multithreaded with advanced params, advanced one pass small out, 5122567
github, level -5, advanced one pass small out, 204411
github, level -5 with dict, advanced one pass small out, 46718
github, level -3, advanced one pass small out, 190643
github, level -3, advanced one pass small out, 193253
github, level -3 with dict, advanced one pass small out, 45395
github, level -1, advanced one pass small out, 175568
github, level -1, advanced one pass small out, 175468
github, level -1 with dict, advanced one pass small out, 43170
github, level 0, advanced one pass small out, 136335
github, level 0, advanced one pass small out, 136332
github, level 0 with dict, advanced one pass small out, 41148
github, level 0 with dict dms, advanced one pass small out, 41148
github, level 0 with dict dds, advanced one pass small out, 41148
github, level 0 with dict copy, advanced one pass small out, 41124
github, level 0 with dict load, advanced one pass small out, 42252
github, level 1, advanced one pass small out, 142465
github, level 1, advanced one pass small out, 142365
github, level 1 with dict, advanced one pass small out, 41682
github, level 1 with dict dms, advanced one pass small out, 41682
github, level 1 with dict dds, advanced one pass small out, 41682
github, level 1 with dict copy, advanced one pass small out, 41674
github, level 1 with dict load, advanced one pass small out, 43755
github, level 3, advanced one pass small out, 136335
github, level 3, advanced one pass small out, 136332
github, level 3 with dict, advanced one pass small out, 41148
github, level 3 with dict dms, advanced one pass small out, 41148
github, level 3 with dict dds, advanced one pass small out, 41148
@@ -616,16 +644,16 @@ github, level 4 with dict dms, advanced
github, level 4 with dict dds, advanced one pass small out, 41251
github, level 4 with dict copy, advanced one pass small out, 41216
github, level 4 with dict load, advanced one pass small out, 41159
github, level 5 row 1, advanced one pass small out, 135121
github, level 5 row 1 with dict dms, advanced one pass small out, 38938
github, level 5 row 1 with dict dds, advanced one pass small out, 38732
github, level 5 row 1 with dict copy, advanced one pass small out, 38934
github, level 5 row 1 with dict load, advanced one pass small out, 40725
github, level 5 row 2, advanced one pass small out, 134584
github, level 5 row 2 with dict dms, advanced one pass small out, 38758
github, level 5 row 2 with dict dds, advanced one pass small out, 38728
github, level 5 row 2 with dict copy, advanced one pass small out, 38759
github, level 5 row 2 with dict load, advanced one pass small out, 41518
github, level 5 row 1, advanced one pass small out, 134584
github, level 5 row 1 with dict dms, advanced one pass small out, 38758
github, level 5 row 1 with dict dds, advanced one pass small out, 38728
github, level 5 row 1 with dict copy, advanced one pass small out, 38759
github, level 5 row 1 with dict load, advanced one pass small out, 41518
github, level 5 row 2, advanced one pass small out, 135121
github, level 5 row 2 with dict dms, advanced one pass small out, 38938
github, level 5 row 2 with dict dds, advanced one pass small out, 38732
github, level 5 row 2 with dict copy, advanced one pass small out, 38934
github, level 5 row 2 with dict load, advanced one pass small out, 40725
github, level 5, advanced one pass small out, 135121
github, level 5 with dict, advanced one pass small out, 38758
github, level 5 with dict dms, advanced one pass small out, 38758
@@ -635,31 +663,41 @@ github, level 5 with dict load, advanced
github, level 6, advanced one pass small out, 135122
github, level 6 with dict, advanced one pass small out, 38671
github, level 6 with dict dms, advanced one pass small out, 38671
github, level 6 with dict dds, advanced one pass small out, 38630
github, level 6 with dict dds, advanced one pass small out, 38636
github, level 6 with dict copy, advanced one pass small out, 38669
github, level 6 with dict load, advanced one pass small out, 40695
github, level 7 row 1, advanced one pass small out, 135122
github, level 7 row 1 with dict dms, advanced one pass small out, 38771
github, level 7 row 1 with dict dds, advanced one pass small out, 38771
github, level 7 row 1 with dict copy, advanced one pass small out, 38745
github, level 7 row 1 with dict load, advanced one pass small out, 40695
github, level 7 row 2, advanced one pass small out, 134584
github, level 7 row 2 with dict dms, advanced one pass small out, 38758
github, level 7 row 2 with dict dds, advanced one pass small out, 38747
github, level 7 row 2 with dict copy, advanced one pass small out, 38755
github, level 7 row 2 with dict load, advanced one pass small out, 41030
github, level 7 row 1, advanced one pass small out, 134584
github, level 7 row 1 with dict dms, advanced one pass small out, 38758
github, level 7 row 1 with dict dds, advanced one pass small out, 38745
github, level 7 row 1 with dict copy, advanced one pass small out, 38755
github, level 7 row 1 with dict load, advanced one pass small out, 43154
github, level 7 row 2, advanced one pass small out, 135122
github, level 7 row 2 with dict dms, advanced one pass small out, 38860
github, level 7 row 2 with dict dds, advanced one pass small out, 38766
github, level 7 row 2 with dict copy, advanced one pass small out, 38834
github, level 7 row 2 with dict load, advanced one pass small out, 40695
github, level 7, advanced one pass small out, 135122
github, level 7 with dict, advanced one pass small out, 38758
github, level 7 with dict dms, advanced one pass small out, 38758
github, level 7 with dict dds, advanced one pass small out, 38747
github, level 7 with dict dds, advanced one pass small out, 38745
github, level 7 with dict copy, advanced one pass small out, 38755
github, level 7 with dict load, advanced one pass small out, 40695
github, level 9, advanced one pass small out, 135122
github, level 9 with dict, advanced one pass small out, 39437
github, level 9 with dict dms, advanced one pass small out, 39437
github, level 9 with dict dds, advanced one pass small out, 39338
github, level 9 with dict dds, advanced one pass small out, 39393
github, level 9 with dict copy, advanced one pass small out, 39398
github, level 9 with dict load, advanced one pass small out, 41710
github, level 11 row 1, advanced one pass small out, 135119
github, level 11 row 1 with dict dms, advanced one pass small out, 39671
github, level 11 row 1 with dict dds, advanced one pass small out, 39671
github, level 11 row 1 with dict copy, advanced one pass small out, 39651
github, level 11 row 1 with dict load, advanced one pass small out, 41360
github, level 11 row 2, advanced one pass small out, 135119
github, level 11 row 2 with dict dms, advanced one pass small out, 39671
github, level 11 row 2 with dict dds, advanced one pass small out, 39671
github, level 11 row 2 with dict copy, advanced one pass small out, 39651
github, level 11 row 2 with dict load, advanced one pass small out, 41360
github, level 12 row 1, advanced one pass small out, 134180
github, level 12 row 1 with dict dms, advanced one pass small out, 39677
github, level 12 row 1 with dict dds, advanced one pass small out, 39677
@@ -671,9 +709,9 @@ github, level 12 row 2 with dict dds, advanced
github, level 12 row 2 with dict copy, advanced one pass small out, 39677
github, level 12 row 2 with dict load, advanced one pass small out, 41166
github, level 13, advanced one pass small out, 134064
github, level 13 with dict, advanced one pass small out, 39743
github, level 13 with dict dms, advanced one pass small out, 39743
github, level 13 with dict dds, advanced one pass small out, 39743
github, level 13 with dict, advanced one pass small out, 39900
github, level 13 with dict dms, advanced one pass small out, 39900
github, level 13 with dict dds, advanced one pass small out, 39900
github, level 13 with dict copy, advanced one pass small out, 39948
github, level 13 with dict load, advanced one pass small out, 42626
github, level 16, advanced one pass small out, 134064
@@ -688,217 +726,231 @@ github, level 19 with dict dms, advanced
github, level 19 with dict dds, advanced one pass small out, 37576
github, level 19 with dict copy, advanced one pass small out, 37567
github, level 19 with dict load, advanced one pass small out, 39613
github, no source size, advanced one pass small out, 136335
github, no source size, advanced one pass small out, 136332
github, no source size with dict, advanced one pass small out, 41148
github, long distance mode, advanced one pass small out, 136335
github, multithreaded, advanced one pass small out, 136335
github, multithreaded long distance mode, advanced one pass small out, 136335
github, small window log, advanced one pass small out, 136335
github, long distance mode, advanced one pass small out, 136332
github, multithreaded, advanced one pass small out, 136332
github, multithreaded long distance mode, advanced one pass small out, 136332
github, small window log, advanced one pass small out, 136332
github, small hash log, advanced one pass small out, 135590
github, small chain log, advanced one pass small out, 136341
github, explicit params, advanced one pass small out, 137727
github, uncompressed literals, advanced one pass small out, 165915
github, uncompressed literals, advanced one pass small out, 165911
github, uncompressed literals optimal, advanced one pass small out, 157227
github, huffman literals, advanced one pass small out, 142465
github, multithreaded with advanced params, advanced one pass small out, 165915
github.tar, level -5, advanced one pass small out, 46856
github.tar, level -5 with dict, advanced one pass small out, 44571
github.tar, level -3, advanced one pass small out, 43754
github.tar, level -3 with dict, advanced one pass small out, 41447
github.tar, level -1, advanced one pass small out, 42490
github.tar, level -1 with dict, advanced one pass small out, 41131
github.tar, level 0, advanced one pass small out, 38441
github, huffman literals, advanced one pass small out, 142365
github, multithreaded with advanced params, advanced one pass small out, 165911
github.tar, level -5, advanced one pass small out, 52110
github.tar, level -5 with dict, advanced one pass small out, 46498
github.tar, level -3, advanced one pass small out, 45678
github.tar, level -3 with dict, advanced one pass small out, 42177
github.tar, level -1, advanced one pass small out, 42560
github.tar, level -1 with dict, advanced one pass small out, 41136
github.tar, level 0, advanced one pass small out, 38831
github.tar, level 0 with dict, advanced one pass small out, 37995
github.tar, level 0 with dict dms, advanced one pass small out, 38003
github.tar, level 0 with dict dds, advanced one pass small out, 38003
github.tar, level 0 with dict copy, advanced one pass small out, 37995
github.tar, level 0 with dict load, advanced one pass small out, 37956
github.tar, level 1, advanced one pass small out, 39265
github.tar, level 1 with dict, advanced one pass small out, 38280
github.tar, level 1 with dict dms, advanced one pass small out, 38290
github.tar, level 1 with dict dds, advanced one pass small out, 38290
github.tar, level 1 with dict copy, advanced one pass small out, 38280
github.tar, level 1 with dict load, advanced one pass small out, 38729
github.tar, level 3, advanced one pass small out, 38441
github.tar, level 1, advanced one pass small out, 39200
github.tar, level 1 with dict, advanced one pass small out, 38284
github.tar, level 1 with dict dms, advanced one pass small out, 38294
github.tar, level 1 with dict dds, advanced one pass small out, 38294
github.tar, level 1 with dict copy, advanced one pass small out, 38284
github.tar, level 1 with dict load, advanced one pass small out, 38724
github.tar, level 3, advanced one pass small out, 38831
github.tar, level 3 with dict, advanced one pass small out, 37995
github.tar, level 3 with dict dms, advanced one pass small out, 38003
github.tar, level 3 with dict dds, advanced one pass small out, 38003
github.tar, level 3 with dict copy, advanced one pass small out, 37995
github.tar, level 3 with dict load, advanced one pass small out, 37956
github.tar, level 4, advanced one pass small out, 38467
github.tar, level 4, advanced one pass small out, 38893
github.tar, level 4 with dict, advanced one pass small out, 37948
github.tar, level 4 with dict dms, advanced one pass small out, 37954
github.tar, level 4 with dict dds, advanced one pass small out, 37954
github.tar, level 4 with dict copy, advanced one pass small out, 37948
github.tar, level 4 with dict load, advanced one pass small out, 37927
github.tar, level 5 row 1, advanced one pass small out, 39788
github.tar, level 5 row 1 with dict dms, advanced one pass small out, 39365
github.tar, level 5 row 1 with dict dds, advanced one pass small out, 39233
github.tar, level 5 row 1 with dict copy, advanced one pass small out, 39715
github.tar, level 5 row 1 with dict load, advanced one pass small out, 39209
github.tar, level 5 row 2, advanced one pass small out, 39693
github.tar, level 5 row 2 with dict dms, advanced one pass small out, 39024
github.tar, level 5 row 2 with dict dds, advanced one pass small out, 39028
github.tar, level 5 row 2 with dict copy, advanced one pass small out, 39040
github.tar, level 5 row 2 with dict load, advanced one pass small out, 39037
github.tar, level 5, advanced one pass small out, 39693
github.tar, level 5 with dict, advanced one pass small out, 39040
github.tar, level 5 with dict dms, advanced one pass small out, 39024
github.tar, level 5 with dict dds, advanced one pass small out, 39028
github.tar, level 5 with dict copy, advanced one pass small out, 39040
github.tar, level 5 with dict load, advanced one pass small out, 39037
github.tar, level 6, advanced one pass small out, 39621
github.tar, level 6 with dict, advanced one pass small out, 38622
github.tar, level 6 with dict dms, advanced one pass small out, 38608
github.tar, level 6 with dict dds, advanced one pass small out, 38610
github.tar, level 6 with dict copy, advanced one pass small out, 38622
github.tar, level 6 with dict load, advanced one pass small out, 38962
github.tar, level 7 row 1, advanced one pass small out, 39206
github.tar, level 7 row 1 with dict dms, advanced one pass small out, 37954
github.tar, level 7 row 1 with dict dds, advanced one pass small out, 37954
github.tar, level 7 row 1 with dict copy, advanced one pass small out, 38071
github.tar, level 7 row 1 with dict load, advanced one pass small out, 38584
github.tar, level 7 row 2, advanced one pass small out, 39213
github.tar, level 7 row 2 with dict dms, advanced one pass small out, 37848
github.tar, level 7 row 2 with dict dds, advanced one pass small out, 37867
github.tar, level 7 row 2 with dict copy, advanced one pass small out, 37848
github.tar, level 7 row 2 with dict load, advanced one pass small out, 38582
github.tar, level 7, advanced one pass small out, 39213
github.tar, level 7 with dict, advanced one pass small out, 37848
github.tar, level 7 with dict dms, advanced one pass small out, 37848
github.tar, level 7 with dict dds, advanced one pass small out, 37867
github.tar, level 7 with dict copy, advanced one pass small out, 37848
github.tar, level 7 with dict load, advanced one pass small out, 38582
github.tar, level 9, advanced one pass small out, 36758
github.tar, level 9 with dict, advanced one pass small out, 36457
github.tar, level 9 with dict dms, advanced one pass small out, 36549
github.tar, level 9 with dict dds, advanced one pass small out, 36637
github.tar, level 9 with dict copy, advanced one pass small out, 36457
github.tar, level 9 with dict load, advanced one pass small out, 36350
github.tar, level 12 row 1, advanced one pass small out, 36435
github.tar, level 5 row 1, advanced one pass small out, 39651
github.tar, level 5 row 1 with dict dms, advanced one pass small out, 39059
github.tar, level 5 row 1 with dict dds, advanced one pass small out, 39067
github.tar, level 5 row 1 with dict copy, advanced one pass small out, 39082
github.tar, level 5 row 1 with dict load, advanced one pass small out, 38999
github.tar, level 5 row 2, advanced one pass small out, 39701
github.tar, level 5 row 2 with dict dms, advanced one pass small out, 39365
github.tar, level 5 row 2 with dict dds, advanced one pass small out, 39233
github.tar, level 5 row 2 with dict copy, advanced one pass small out, 39715
github.tar, level 5 row 2 with dict load, advanced one pass small out, 39158
github.tar, level 5, advanced one pass small out, 39651
github.tar, level 5 with dict, advanced one pass small out, 39082
github.tar, level 5 with dict dms, advanced one pass small out, 39059
github.tar, level 5 with dict dds, advanced one pass small out, 39067
github.tar, level 5 with dict copy, advanced one pass small out, 39082
github.tar, level 5 with dict load, advanced one pass small out, 38999
github.tar, level 6, advanced one pass small out, 39282
github.tar, level 6 with dict, advanced one pass small out, 38656
github.tar, level 6 with dict dms, advanced one pass small out, 38636
github.tar, level 6 with dict dds, advanced one pass small out, 38634
github.tar, level 6 with dict copy, advanced one pass small out, 38656
github.tar, level 6 with dict load, advanced one pass small out, 38648
github.tar, level 7 row 1, advanced one pass small out, 38110
github.tar, level 7 row 1 with dict dms, advanced one pass small out, 37858
github.tar, level 7 row 1 with dict dds, advanced one pass small out, 37882
github.tar, level 7 row 1 with dict copy, advanced one pass small out, 37865
github.tar, level 7 row 1 with dict load, advanced one pass small out, 37436
github.tar, level 7 row 2, advanced one pass small out, 38077
github.tar, level 7 row 2 with dict dms, advanced one pass small out, 38012
github.tar, level 7 row 2 with dict dds, advanced one pass small out, 38014
github.tar, level 7 row 2 with dict copy, advanced one pass small out, 38101
github.tar, level 7 row 2 with dict load, advanced one pass small out, 37402
github.tar, level 7, advanced one pass small out, 38110
github.tar, level 7 with dict, advanced one pass small out, 37865
github.tar, level 7 with dict dms, advanced one pass small out, 37858
github.tar, level 7 with dict dds, advanced one pass small out, 37882
github.tar, level 7 with dict copy, advanced one pass small out, 37865
github.tar, level 7 with dict load, advanced one pass small out, 37436
github.tar, level 9, advanced one pass small out, 36760
github.tar, level 9 with dict, advanced one pass small out, 36484
github.tar, level 9 with dict dms, advanced one pass small out, 36567
github.tar, level 9 with dict dds, advanced one pass small out, 36628
github.tar, level 9 with dict copy, advanced one pass small out, 36484
github.tar, level 9 with dict load, advanced one pass small out, 36401
github.tar, level 11 row 1, advanced one pass small out, 36081
github.tar, level 11 row 1 with dict dms, advanced one pass small out, 36963
github.tar, level 11 row 1 with dict dds, advanced one pass small out, 36963
github.tar, level 11 row 1 with dict copy, advanced one pass small out, 36557
github.tar, level 11 row 1 with dict load, advanced one pass small out, 36434
github.tar, level 11 row 2, advanced one pass small out, 36110
github.tar, level 11 row 2 with dict dms, advanced one pass small out, 36963
github.tar, level 11 row 2 with dict dds, advanced one pass small out, 36963
github.tar, level 11 row 2 with dict copy, advanced one pass small out, 36557
github.tar, level 11 row 2 with dict load, advanced one pass small out, 36459
github.tar, level 12 row 1, advanced one pass small out, 36081
github.tar, level 12 row 1 with dict dms, advanced one pass small out, 36986
github.tar, level 12 row 1 with dict dds, advanced one pass small out, 36986
github.tar, level 12 row 1 with dict copy, advanced one pass small out, 36609
github.tar, level 12 row 1 with dict load, advanced one pass small out, 36419
github.tar, level 12 row 2, advanced one pass small out, 36435
github.tar, level 12 row 1 with dict load, advanced one pass small out, 36434
github.tar, level 12 row 2, advanced one pass small out, 36110
github.tar, level 12 row 2 with dict dms, advanced one pass small out, 36986
github.tar, level 12 row 2 with dict dds, advanced one pass small out, 36986
github.tar, level 12 row 2 with dict copy, advanced one pass small out, 36609
github.tar, level 12 row 2 with dict load, advanced one pass small out, 36424
github.tar, level 13, advanced one pass small out, 35621
github.tar, level 13 with dict, advanced one pass small out, 38726
github.tar, level 13 with dict dms, advanced one pass small out, 38903
github.tar, level 13 with dict dds, advanced one pass small out, 38903
github.tar, level 13 with dict copy, advanced one pass small out, 38726
github.tar, level 13 with dict load, advanced one pass small out, 36372
github.tar, level 16, advanced one pass small out, 40255
github.tar, level 16 with dict, advanced one pass small out, 33639
github.tar, level 16 with dict dms, advanced one pass small out, 33544
github.tar, level 16 with dict dds, advanced one pass small out, 33544
github.tar, level 16 with dict copy, advanced one pass small out, 33639
github.tar, level 16 with dict load, advanced one pass small out, 39353
github.tar, level 19, advanced one pass small out, 32837
github.tar, level 19 with dict, advanced one pass small out, 32895
github.tar, level 19 with dict dms, advanced one pass small out, 32672
github.tar, level 19 with dict dds, advanced one pass small out, 32672
github.tar, level 19 with dict copy, advanced one pass small out, 32895
github.tar, level 19 with dict load, advanced one pass small out, 32676
github.tar, no source size, advanced one pass small out, 38441
github.tar, level 12 row 2 with dict load, advanced one pass small out, 36459
github.tar, level 13, advanced one pass small out, 35501
github.tar, level 13 with dict, advanced one pass small out, 37130
github.tar, level 13 with dict dms, advanced one pass small out, 37220
github.tar, level 13 with dict dds, advanced one pass small out, 37220
github.tar, level 13 with dict copy, advanced one pass small out, 37130
github.tar, level 13 with dict load, advanced one pass small out, 36010
github.tar, level 16, advanced one pass small out, 40471
github.tar, level 16 with dict, advanced one pass small out, 33378
github.tar, level 16 with dict dms, advanced one pass small out, 33213
github.tar, level 16 with dict dds, advanced one pass small out, 33213
github.tar, level 16 with dict copy, advanced one pass small out, 33378
github.tar, level 16 with dict load, advanced one pass small out, 39081
github.tar, level 19, advanced one pass small out, 32134
github.tar, level 19 with dict, advanced one pass small out, 32709
github.tar, level 19 with dict dms, advanced one pass small out, 32553
github.tar, level 19 with dict dds, advanced one pass small out, 32553
github.tar, level 19 with dict copy, advanced one pass small out, 32709
github.tar, level 19 with dict load, advanced one pass small out, 32474
github.tar, no source size, advanced one pass small out, 38831
github.tar, no source size with dict, advanced one pass small out, 37995
github.tar, long distance mode, advanced one pass small out, 39757
github.tar, multithreaded, advanced one pass small out, 38441
github.tar, multithreaded long distance mode, advanced one pass small out, 39726
github.tar, long distance mode, advanced one pass small out, 40252
github.tar, multithreaded, advanced one pass small out, 38831
github.tar, multithreaded long distance mode, advanced one pass small out, 40232
github.tar, small window log, advanced one pass small out, 198540
github.tar, small hash log, advanced one pass small out, 129870
github.tar, small chain log, advanced one pass small out, 41669
github.tar, explicit params, advanced one pass small out, 41227
github.tar, uncompressed literals, advanced one pass small out, 41122
github.tar, uncompressed literals optimal, advanced one pass small out, 35388
github.tar, huffman literals, advanced one pass small out, 38777
github.tar, multithreaded with advanced params, advanced one pass small out, 41122
silesia, level -5, advanced streaming, 6882505
silesia, level -3, advanced streaming, 6568376
silesia, level -1, advanced streaming, 6183403
silesia, level 0, advanced streaming, 4849552
silesia, level 1, advanced streaming, 5314162
silesia, level 3, advanced streaming, 4849552
silesia, level 4, advanced streaming, 4786970
silesia, level 5 row 1, advanced streaming, 4710236
silesia, level 5 row 2, advanced streaming, 4707794
silesia, level 5, advanced streaming, 4707794
silesia, level 6, advanced streaming, 4666383
silesia, level 7 row 1, advanced streaming, 4596296
silesia, level 7 row 2, advanced streaming, 4603381
silesia, level 7, advanced streaming, 4603381
silesia, level 9, advanced streaming, 4546001
silesia, level 12 row 1, advanced streaming, 4519288
silesia, level 12 row 2, advanced streaming, 4521397
silesia, level 13, advanced streaming, 4482135
silesia, level 16, advanced streaming, 4360251
silesia, level 19, advanced streaming, 4283237
silesia, no source size, advanced streaming, 4849516
silesia, long distance mode, advanced streaming, 4840738
silesia, multithreaded, advanced streaming, 4849552
silesia, multithreaded long distance mode, advanced streaming, 4840758
silesia, small window log, advanced streaming, 7112062
github.tar, explicit params, advanced one pass small out, 41385
github.tar, uncompressed literals, advanced one pass small out, 41525
github.tar, uncompressed literals optimal, advanced one pass small out, 35397
github.tar, huffman literals, advanced one pass small out, 38853
github.tar, multithreaded with advanced params, advanced one pass small out, 41525
silesia, level -5, advanced streaming, 6963781
silesia, level -3, advanced streaming, 6610376
silesia, level -1, advanced streaming, 6179294
silesia, level 0, advanced streaming, 4842075
silesia, level 1, advanced streaming, 5310178
silesia, level 3, advanced streaming, 4842075
silesia, level 4, advanced streaming, 4779186
silesia, level 5 row 1, advanced streaming, 4666323
silesia, level 5 row 2, advanced streaming, 4670136
silesia, level 5, advanced streaming, 4666323
silesia, level 6, advanced streaming, 4603066
silesia, level 7 row 1, advanced streaming, 4566984
silesia, level 7 row 2, advanced streaming, 4564868
silesia, level 7, advanced streaming, 4566984
silesia, level 9, advanced streaming, 4543018
silesia, level 11 row 1, advanced streaming, 4505046
silesia, level 11 row 2, advanced streaming, 4503116
silesia, level 12 row 1, advanced streaming, 4505046
silesia, level 12 row 2, advanced streaming, 4503116
silesia, level 13, advanced streaming, 4493990
silesia, level 16, advanced streaming, 4359864
silesia, level 19, advanced streaming, 4296880
silesia, no source size, advanced streaming, 4842039
silesia, long distance mode, advanced streaming, 4833710
silesia, multithreaded, advanced streaming, 4842075
silesia, multithreaded long distance mode, advanced streaming, 4833737
silesia, small window log, advanced streaming, 7111103
silesia, small hash log, advanced streaming, 6526141
silesia, small chain log, advanced streaming, 4912197
silesia, explicit params, advanced streaming, 4795887
silesia, uncompressed literals, advanced streaming, 5127982
silesia, uncompressed literals optimal, advanced streaming, 4317896
silesia, huffman literals, advanced streaming, 5331168
silesia, multithreaded with advanced params, advanced streaming, 5127982
silesia.tar, level -5, advanced streaming, 6982759
silesia.tar, level -3, advanced streaming, 6641283
silesia.tar, level -1, advanced streaming, 6190795
silesia.tar, level 0, advanced streaming, 4861427
silesia.tar, level 1, advanced streaming, 5336939
silesia.tar, level 3, advanced streaming, 4861427
silesia.tar, level 4, advanced streaming, 4799630
silesia.tar, level 5 row 1, advanced streaming, 4722329
silesia.tar, level 5 row 2, advanced streaming, 4719261
silesia.tar, level 5, advanced streaming, 4719261
silesia.tar, level 6, advanced streaming, 4677729
silesia.tar, level 7 row 1, advanced streaming, 4606715
silesia.tar, level 7 row 2, advanced streaming, 4613544
silesia.tar, level 7, advanced streaming, 4613544
silesia.tar, level 9, advanced streaming, 4555432
silesia.tar, level 12 row 1, advanced streaming, 4529459
silesia.tar, level 12 row 2, advanced streaming, 4530258
silesia.tar, level 13, advanced streaming, 4491765
silesia.tar, level 16, advanced streaming, 4356834
silesia.tar, level 19, advanced streaming, 4264392
silesia.tar, no source size, advanced streaming, 4861423
silesia.tar, long distance mode, advanced streaming, 4847754
silesia.tar, multithreaded, advanced streaming, 4861508
silesia.tar, multithreaded long distance mode, advanced streaming, 4853222
silesia.tar, small window log, advanced streaming, 7118769
silesia.tar, small hash log, advanced streaming, 6529235
silesia, explicit params, advanced streaming, 4795452
silesia, uncompressed literals, advanced streaming, 5120566
silesia, uncompressed literals optimal, advanced streaming, 4319518
silesia, huffman literals, advanced streaming, 5327881
silesia, multithreaded with advanced params, advanced streaming, 5120566
silesia.tar, level -5, advanced streaming, 7043687
silesia.tar, level -3, advanced streaming, 6671317
silesia.tar, level -1, advanced streaming, 6187457
silesia.tar, level 0, advanced streaming, 4859271
silesia.tar, level 1, advanced streaming, 5333896
silesia.tar, level 3, advanced streaming, 4859271
silesia.tar, level 4, advanced streaming, 4797470
silesia.tar, level 5 row 1, advanced streaming, 4677748
silesia.tar, level 5 row 2, advanced streaming, 4682169
silesia.tar, level 5, advanced streaming, 4677748
silesia.tar, level 6, advanced streaming, 4613246
silesia.tar, level 7 row 1, advanced streaming, 4576664
silesia.tar, level 7 row 2, advanced streaming, 4575394
silesia.tar, level 7, advanced streaming, 4576664
silesia.tar, level 9, advanced streaming, 4552900
silesia.tar, level 11 row 1, advanced streaming, 4514433
silesia.tar, level 11 row 2, advanced streaming, 4513604
silesia.tar, level 12 row 1, advanced streaming, 4514049
silesia.tar, level 12 row 2, advanced streaming, 4513797
silesia.tar, level 13, advanced streaming, 4502956
silesia.tar, level 16, advanced streaming, 4360527
silesia.tar, level 19, advanced streaming, 4267266
silesia.tar, no source size, advanced streaming, 4859267
silesia.tar, long distance mode, advanced streaming, 4840452
silesia.tar, multithreaded, advanced streaming, 4854160
silesia.tar, multithreaded long distance mode, advanced streaming, 4845741
silesia.tar, small window log, advanced streaming, 7117559
silesia.tar, small hash log, advanced streaming, 6529234
silesia.tar, small chain log, advanced streaming, 4917021
silesia.tar, explicit params, advanced streaming, 4807401
silesia.tar, uncompressed literals, advanced streaming, 5129461
silesia.tar, uncompressed literals optimal, advanced streaming, 4307400
silesia.tar, huffman literals, advanced streaming, 5352360
silesia.tar, multithreaded with advanced params, advanced streaming, 5129555
github, level -5, advanced streaming, 205285
silesia.tar, explicit params, advanced streaming, 4806873
silesia.tar, uncompressed literals, advanced streaming, 5127423
silesia.tar, uncompressed literals optimal, advanced streaming, 4310141
silesia.tar, huffman literals, advanced streaming, 5349624
silesia.tar, multithreaded with advanced params, advanced streaming, 5122567
github, level -5, advanced streaming, 204411
github, level -5 with dict, advanced streaming, 46718
github, level -3, advanced streaming, 190643
github, level -3, advanced streaming, 193253
github, level -3 with dict, advanced streaming, 45395
github, level -1, advanced streaming, 175568
github, level -1, advanced streaming, 175468
github, level -1 with dict, advanced streaming, 43170
github, level 0, advanced streaming, 136335
github, level 0, advanced streaming, 136332
github, level 0 with dict, advanced streaming, 41148
github, level 0 with dict dms, advanced streaming, 41148
github, level 0 with dict dds, advanced streaming, 41148
github, level 0 with dict copy, advanced streaming, 41124
github, level 0 with dict load, advanced streaming, 42252
github, level 1, advanced streaming, 142465
github, level 1, advanced streaming, 142365
github, level 1 with dict, advanced streaming, 41682
github, level 1 with dict dms, advanced streaming, 41682
github, level 1 with dict dds, advanced streaming, 41682
github, level 1 with dict copy, advanced streaming, 41674
github, level 1 with dict load, advanced streaming, 43755
github, level 3, advanced streaming, 136335
github, level 3, advanced streaming, 136332
github, level 3 with dict, advanced streaming, 41148
github, level 3 with dict dms, advanced streaming, 41148
github, level 3 with dict dds, advanced streaming, 41148
@@ -910,16 +962,16 @@ github, level 4 with dict dms, advanced
github, level 4 with dict dds, advanced streaming, 41251
github, level 4 with dict copy, advanced streaming, 41216
github, level 4 with dict load, advanced streaming, 41159
github, level 5 row 1, advanced streaming, 135121
github, level 5 row 1 with dict dms, advanced streaming, 38938
github, level 5 row 1 with dict dds, advanced streaming, 38732
github, level 5 row 1 with dict copy, advanced streaming, 38934
github, level 5 row 1 with dict load, advanced streaming, 40725
github, level 5 row 2, advanced streaming, 134584
github, level 5 row 2 with dict dms, advanced streaming, 38758
github, level 5 row 2 with dict dds, advanced streaming, 38728
github, level 5 row 2 with dict copy, advanced streaming, 38759
github, level 5 row 2 with dict load, advanced streaming, 41518
github, level 5 row 1, advanced streaming, 134584
github, level 5 row 1 with dict dms, advanced streaming, 38758
github, level 5 row 1 with dict dds, advanced streaming, 38728
github, level 5 row 1 with dict copy, advanced streaming, 38759
github, level 5 row 1 with dict load, advanced streaming, 41518
github, level 5 row 2, advanced streaming, 135121
github, level 5 row 2 with dict dms, advanced streaming, 38938
github, level 5 row 2 with dict dds, advanced streaming, 38732
github, level 5 row 2 with dict copy, advanced streaming, 38934
github, level 5 row 2 with dict load, advanced streaming, 40725
github, level 5, advanced streaming, 135121
github, level 5 with dict, advanced streaming, 38758
github, level 5 with dict dms, advanced streaming, 38758
@@ -929,31 +981,41 @@ github, level 5 with dict load, advanced
github, level 6, advanced streaming, 135122
github, level 6 with dict, advanced streaming, 38671
github, level 6 with dict dms, advanced streaming, 38671
github, level 6 with dict dds, advanced streaming, 38630
github, level 6 with dict dds, advanced streaming, 38636
github, level 6 with dict copy, advanced streaming, 38669
github, level 6 with dict load, advanced streaming, 40695
github, level 7 row 1, advanced streaming, 135122
github, level 7 row 1 with dict dms, advanced streaming, 38771
github, level 7 row 1 with dict dds, advanced streaming, 38771
github, level 7 row 1 with dict copy, advanced streaming, 38745
github, level 7 row 1 with dict load, advanced streaming, 40695
github, level 7 row 2, advanced streaming, 134584
github, level 7 row 2 with dict dms, advanced streaming, 38758
github, level 7 row 2 with dict dds, advanced streaming, 38747
github, level 7 row 2 with dict copy, advanced streaming, 38755
github, level 7 row 2 with dict load, advanced streaming, 41030
github, level 7 row 1, advanced streaming, 134584
github, level 7 row 1 with dict dms, advanced streaming, 38758
github, level 7 row 1 with dict dds, advanced streaming, 38745
github, level 7 row 1 with dict copy, advanced streaming, 38755
github, level 7 row 1 with dict load, advanced streaming, 43154
github, level 7 row 2, advanced streaming, 135122
github, level 7 row 2 with dict dms, advanced streaming, 38860
github, level 7 row 2 with dict dds, advanced streaming, 38766
github, level 7 row 2 with dict copy, advanced streaming, 38834
github, level 7 row 2 with dict load, advanced streaming, 40695
github, level 7, advanced streaming, 135122
github, level 7 with dict, advanced streaming, 38758
github, level 7 with dict dms, advanced streaming, 38758
github, level 7 with dict dds, advanced streaming, 38747
github, level 7 with dict dds, advanced streaming, 38745
github, level 7 with dict copy, advanced streaming, 38755
github, level 7 with dict load, advanced streaming, 40695
github, level 9, advanced streaming, 135122
github, level 9 with dict, advanced streaming, 39437
github, level 9 with dict dms, advanced streaming, 39437
github, level 9 with dict dds, advanced streaming, 39338
github, level 9 with dict dds, advanced streaming, 39393
github, level 9 with dict copy, advanced streaming, 39398
github, level 9 with dict load, advanced streaming, 41710
github, level 11 row 1, advanced streaming, 135119
github, level 11 row 1 with dict dms, advanced streaming, 39671
github, level 11 row 1 with dict dds, advanced streaming, 39671
github, level 11 row 1 with dict copy, advanced streaming, 39651
github, level 11 row 1 with dict load, advanced streaming, 41360
github, level 11 row 2, advanced streaming, 135119
github, level 11 row 2 with dict dms, advanced streaming, 39671
github, level 11 row 2 with dict dds, advanced streaming, 39671
github, level 11 row 2 with dict copy, advanced streaming, 39651
github, level 11 row 2 with dict load, advanced streaming, 41360
github, level 12 row 1, advanced streaming, 134180
github, level 12 row 1 with dict dms, advanced streaming, 39677
github, level 12 row 1 with dict dds, advanced streaming, 39677
@@ -965,9 +1027,9 @@ github, level 12 row 2 with dict dds, advanced
github, level 12 row 2 with dict copy, advanced streaming, 39677
github, level 12 row 2 with dict load, advanced streaming, 41166
github, level 13, advanced streaming, 134064
github, level 13 with dict, advanced streaming, 39743
github, level 13 with dict dms, advanced streaming, 39743
github, level 13 with dict dds, advanced streaming, 39743
github, level 13 with dict, advanced streaming, 39900
github, level 13 with dict dms, advanced streaming, 39900
github, level 13 with dict dds, advanced streaming, 39900
github, level 13 with dict copy, advanced streaming, 39948
github, level 13 with dict load, advanced streaming, 42626
github, level 16, advanced streaming, 134064
@@ -982,181 +1044,191 @@ github, level 19 with dict dms, advanced
github, level 19 with dict dds, advanced streaming, 37576
github, level 19 with dict copy, advanced streaming, 37567
github, level 19 with dict load, advanced streaming, 39613
github, no source size, advanced streaming, 136335
github, no source size, advanced streaming, 136332
github, no source size with dict, advanced streaming, 41148
github, long distance mode, advanced streaming, 136335
github, multithreaded, advanced streaming, 136335
github, multithreaded long distance mode, advanced streaming, 136335
github, small window log, advanced streaming, 136335
github, long distance mode, advanced streaming, 136332
github, multithreaded, advanced streaming, 136332
github, multithreaded long distance mode, advanced streaming, 136332
github, small window log, advanced streaming, 136332
github, small hash log, advanced streaming, 135590
github, small chain log, advanced streaming, 136341
github, explicit params, advanced streaming, 137727
github, uncompressed literals, advanced streaming, 165915
github, uncompressed literals, advanced streaming, 165911
github, uncompressed literals optimal, advanced streaming, 157227
github, huffman literals, advanced streaming, 142465
github, multithreaded with advanced params, advanced streaming, 165915
github.tar, level -5, advanced streaming, 46747
github.tar, level -5 with dict, advanced streaming, 44440
github.tar, level -3, advanced streaming, 43537
github.tar, level -3 with dict, advanced streaming, 41112
github.tar, level -1, advanced streaming, 42465
github.tar, level -1 with dict, advanced streaming, 41196
github.tar, level 0, advanced streaming, 38441
github, huffman literals, advanced streaming, 142365
github, multithreaded with advanced params, advanced streaming, 165911
github.tar, level -5, advanced streaming, 51420
github.tar, level -5 with dict, advanced streaming, 45495
github.tar, level -3, advanced streaming, 45077
github.tar, level -3 with dict, advanced streaming, 41627
github.tar, level -1, advanced streaming, 42536
github.tar, level -1 with dict, advanced streaming, 41198
github.tar, level 0, advanced streaming, 38831
github.tar, level 0 with dict, advanced streaming, 37995
github.tar, level 0 with dict dms, advanced streaming, 38003
github.tar, level 0 with dict dds, advanced streaming, 38003
github.tar, level 0 with dict copy, advanced streaming, 37995
github.tar, level 0 with dict load, advanced streaming, 37956
github.tar, level 1, advanced streaming, 39342
github.tar, level 1 with dict, advanced streaming, 38293
github.tar, level 1 with dict dms, advanced streaming, 38303
github.tar, level 1 with dict dds, advanced streaming, 38303
github.tar, level 1 with dict copy, advanced streaming, 38293
github.tar, level 1 with dict load, advanced streaming, 38766
github.tar, level 3, advanced streaming, 38441
github.tar, level 1, advanced streaming, 39270
github.tar, level 1 with dict, advanced streaming, 38316
github.tar, level 1 with dict dms, advanced streaming, 38326
github.tar, level 1 with dict dds, advanced streaming, 38326
github.tar, level 1 with dict copy, advanced streaming, 38316
github.tar, level 1 with dict load, advanced streaming, 38761
github.tar, level 3, advanced streaming, 38831
github.tar, level 3 with dict, advanced streaming, 37995
github.tar, level 3 with dict dms, advanced streaming, 38003
github.tar, level 3 with dict dds, advanced streaming, 38003
github.tar, level 3 with dict copy, advanced streaming, 37995
github.tar, level 3 with dict load, advanced streaming, 37956
github.tar, level 4, advanced streaming, 38467
github.tar, level 4, advanced streaming, 38893
github.tar, level 4 with dict, advanced streaming, 37948
github.tar, level 4 with dict dms, advanced streaming, 37954
github.tar, level 4 with dict dds, advanced streaming, 37954
github.tar, level 4 with dict copy, advanced streaming, 37948
github.tar, level 4 with dict load, advanced streaming, 37927
github.tar, level 5 row 1, advanced streaming, 39788
github.tar, level 5 row 1 with dict dms, advanced streaming, 39365
github.tar, level 5 row 1 with dict dds, advanced streaming, 39233
github.tar, level 5 row 1 with dict copy, advanced streaming, 39715
github.tar, level 5 row 1 with dict load, advanced streaming, 39209
github.tar, level 5 row 2, advanced streaming, 39693
github.tar, level 5 row 2 with dict dms, advanced streaming, 39024
github.tar, level 5 row 2 with dict dds, advanced streaming, 39028
github.tar, level 5 row 2 with dict copy, advanced streaming, 39040
github.tar, level 5 row 2 with dict load, advanced streaming, 39037
github.tar, level 5, advanced streaming, 39693
github.tar, level 5 with dict, advanced streaming, 39040
github.tar, level 5 with dict dms, advanced streaming, 39024
github.tar, level 5 with dict dds, advanced streaming, 39028
github.tar, level 5 with dict copy, advanced streaming, 39040
github.tar, level 5 with dict load, advanced streaming, 39037
github.tar, level 6, advanced streaming, 39621
github.tar, level 6 with dict, advanced streaming, 38622
github.tar, level 6 with dict dms, advanced streaming, 38608
github.tar, level 6 with dict dds, advanced streaming, 38610
github.tar, level 6 with dict copy, advanced streaming, 38622
github.tar, level 6 with dict load, advanced streaming, 38962
github.tar, level 7 row 1, advanced streaming, 39206
github.tar, level 7 row 1 with dict dms, advanced streaming, 37954
github.tar, level 7 row 1 with dict dds, advanced streaming, 37954
github.tar, level 7 row 1 with dict copy, advanced streaming, 38071
github.tar, level 7 row 1 with dict load, advanced streaming, 38584
github.tar, level 7 row 2, advanced streaming, 39213
github.tar, level 7 row 2 with dict dms, advanced streaming, 37848
github.tar, level 7 row 2 with dict dds, advanced streaming, 37867
github.tar, level 7 row 2 with dict copy, advanced streaming, 37848
github.tar, level 7 row 2 with dict load, advanced streaming, 38582
github.tar, level 7, advanced streaming, 39213
github.tar, level 7 with dict, advanced streaming, 37848
github.tar, level 7 with dict dms, advanced streaming, 37848
github.tar, level 7 with dict dds, advanced streaming, 37867
github.tar, level 7 with dict copy, advanced streaming, 37848
github.tar, level 7 with dict load, advanced streaming, 38582
github.tar, level 9, advanced streaming, 36758
github.tar, level 9 with dict, advanced streaming, 36457
github.tar, level 9 with dict dms, advanced streaming, 36549
github.tar, level 9 with dict dds, advanced streaming, 36637
github.tar, level 9 with dict copy, advanced streaming, 36457
github.tar, level 9 with dict load, advanced streaming, 36350
github.tar, level 12 row 1, advanced streaming, 36435
github.tar, level 5 row 1, advanced streaming, 39651
github.tar, level 5 row 1 with dict dms, advanced streaming, 39059
github.tar, level 5 row 1 with dict dds, advanced streaming, 39067
github.tar, level 5 row 1 with dict copy, advanced streaming, 39082
github.tar, level 5 row 1 with dict load, advanced streaming, 38999
github.tar, level 5 row 2, advanced streaming, 39701
github.tar, level 5 row 2 with dict dms, advanced streaming, 39365
github.tar, level 5 row 2 with dict dds, advanced streaming, 39233
github.tar, level 5 row 2 with dict copy, advanced streaming, 39715
github.tar, level 5 row 2 with dict load, advanced streaming, 39158
github.tar, level 5, advanced streaming, 39651
github.tar, level 5 with dict, advanced streaming, 39082
github.tar, level 5 with dict dms, advanced streaming, 39059
github.tar, level 5 with dict dds, advanced streaming, 39067
github.tar, level 5 with dict copy, advanced streaming, 39082
github.tar, level 5 with dict load, advanced streaming, 38999
github.tar, level 6, advanced streaming, 39282
github.tar, level 6 with dict, advanced streaming, 38656
github.tar, level 6 with dict dms, advanced streaming, 38636
github.tar, level 6 with dict dds, advanced streaming, 38634
github.tar, level 6 with dict copy, advanced streaming, 38656
github.tar, level 6 with dict load, advanced streaming, 38648
github.tar, level 7 row 1, advanced streaming, 38110
github.tar, level 7 row 1 with dict dms, advanced streaming, 37858
github.tar, level 7 row 1 with dict dds, advanced streaming, 37882
github.tar, level 7 row 1 with dict copy, advanced streaming, 37865
github.tar, level 7 row 1 with dict load, advanced streaming, 37436
github.tar, level 7 row 2, advanced streaming, 38077
github.tar, level 7 row 2 with dict dms, advanced streaming, 38012
github.tar, level 7 row 2 with dict dds, advanced streaming, 38014
github.tar, level 7 row 2 with dict copy, advanced streaming, 38101
github.tar, level 7 row 2 with dict load, advanced streaming, 37402
github.tar, level 7, advanced streaming, 38110
github.tar, level 7 with dict, advanced streaming, 37865
github.tar, level 7 with dict dms, advanced streaming, 37858
github.tar, level 7 with dict dds, advanced streaming, 37882
github.tar, level 7 with dict copy, advanced streaming, 37865
github.tar, level 7 with dict load, advanced streaming, 37436
github.tar, level 9, advanced streaming, 36760
github.tar, level 9 with dict, advanced streaming, 36484
github.tar, level 9 with dict dms, advanced streaming, 36567
github.tar, level 9 with dict dds, advanced streaming, 36628
github.tar, level 9 with dict copy, advanced streaming, 36484
github.tar, level 9 with dict load, advanced streaming, 36401
github.tar, level 11 row 1, advanced streaming, 36081
github.tar, level 11 row 1 with dict dms, advanced streaming, 36963
github.tar, level 11 row 1 with dict dds, advanced streaming, 36963
github.tar, level 11 row 1 with dict copy, advanced streaming, 36557
github.tar, level 11 row 1 with dict load, advanced streaming, 36434
github.tar, level 11 row 2, advanced streaming, 36110
github.tar, level 11 row 2 with dict dms, advanced streaming, 36963
github.tar, level 11 row 2 with dict dds, advanced streaming, 36963
github.tar, level 11 row 2 with dict copy, advanced streaming, 36557
github.tar, level 11 row 2 with dict load, advanced streaming, 36459
github.tar, level 12 row 1, advanced streaming, 36081
github.tar, level 12 row 1 with dict dms, advanced streaming, 36986
github.tar, level 12 row 1 with dict dds, advanced streaming, 36986
github.tar, level 12 row 1 with dict copy, advanced streaming, 36609
github.tar, level 12 row 1 with dict load, advanced streaming, 36419
github.tar, level 12 row 2, advanced streaming, 36435
github.tar, level 12 row 1 with dict load, advanced streaming, 36434
github.tar, level 12 row 2, advanced streaming, 36110
github.tar, level 12 row 2 with dict dms, advanced streaming, 36986
github.tar, level 12 row 2 with dict dds, advanced streaming, 36986
github.tar, level 12 row 2 with dict copy, advanced streaming, 36609
github.tar, level 12 row 2 with dict load, advanced streaming, 36424
github.tar, level 13, advanced streaming, 35621
github.tar, level 13 with dict, advanced streaming, 38726
github.tar, level 13 with dict dms, advanced streaming, 38903
github.tar, level 13 with dict dds, advanced streaming, 38903
github.tar, level 13 with dict copy, advanced streaming, 38726
github.tar, level 13 with dict load, advanced streaming, 36372
github.tar, level 16, advanced streaming, 40255
github.tar, level 16 with dict, advanced streaming, 33639
github.tar, level 16 with dict dms, advanced streaming, 33544
github.tar, level 16 with dict dds, advanced streaming, 33544
github.tar, level 16 with dict copy, advanced streaming, 33639
github.tar, level 16 with dict load, advanced streaming, 39353
github.tar, level 19, advanced streaming, 32837
github.tar, level 19 with dict, advanced streaming, 32895
github.tar, level 19 with dict dms, advanced streaming, 32672
github.tar, level 19 with dict dds, advanced streaming, 32672
github.tar, level 19 with dict copy, advanced streaming, 32895
github.tar, level 19 with dict load, advanced streaming, 32676
github.tar, no source size, advanced streaming, 38438
github.tar, level 12 row 2 with dict load, advanced streaming, 36459
github.tar, level 13, advanced streaming, 35501
github.tar, level 13 with dict, advanced streaming, 37130
github.tar, level 13 with dict dms, advanced streaming, 37220
github.tar, level 13 with dict dds, advanced streaming, 37220
github.tar, level 13 with dict copy, advanced streaming, 37130
github.tar, level 13 with dict load, advanced streaming, 36010
github.tar, level 16, advanced streaming, 40471
github.tar, level 16 with dict, advanced streaming, 33378
github.tar, level 16 with dict dms, advanced streaming, 33213
github.tar, level 16 with dict dds, advanced streaming, 33213
github.tar, level 16 with dict copy, advanced streaming, 33378
github.tar, level 16 with dict load, advanced streaming, 39081
github.tar, level 19, advanced streaming, 32134
github.tar, level 19 with dict, advanced streaming, 32709
github.tar, level 19 with dict dms, advanced streaming, 32553
github.tar, level 19 with dict dds, advanced streaming, 32553
github.tar, level 19 with dict copy, advanced streaming, 32709
github.tar, level 19 with dict load, advanced streaming, 32474
github.tar, no source size, advanced streaming, 38828
github.tar, no source size with dict, advanced streaming, 38000
github.tar, long distance mode, advanced streaming, 39757
github.tar, multithreaded, advanced streaming, 38441
github.tar, multithreaded long distance mode, advanced streaming, 39726
github.tar, long distance mode, advanced streaming, 40252
github.tar, multithreaded, advanced streaming, 38831
github.tar, multithreaded long distance mode, advanced streaming, 40232
github.tar, small window log, advanced streaming, 199558
github.tar, small hash log, advanced streaming, 129870
github.tar, small chain log, advanced streaming, 41669
github.tar, explicit params, advanced streaming, 41227
github.tar, uncompressed literals, advanced streaming, 41122
github.tar, uncompressed literals optimal, advanced streaming, 35388
github.tar, huffman literals, advanced streaming, 38800
github.tar, multithreaded with advanced params, advanced streaming, 41122
silesia, level -5, old streaming, 6882505
silesia, level -3, old streaming, 6568376
silesia, level -1, old streaming, 6183403
silesia, level 0, old streaming, 4849552
silesia, level 1, old streaming, 5314162
silesia, level 3, old streaming, 4849552
silesia, level 4, old streaming, 4786970
silesia, level 5, old streaming, 4707794
silesia, level 6, old streaming, 4666383
silesia, level 7, old streaming, 4603381
silesia, level 9, old streaming, 4546001
silesia, level 13, old streaming, 4482135
silesia, level 16, old streaming, 4360251
silesia, level 19, old streaming, 4283237
silesia, no source size, old streaming, 4849516
silesia, uncompressed literals, old streaming, 4849552
silesia, uncompressed literals optimal, old streaming, 4283237
silesia, huffman literals, old streaming, 6183403
silesia.tar, level -5, old streaming, 6982759
silesia.tar, level -3, old streaming, 6641283
silesia.tar, level -1, old streaming, 6190795
silesia.tar, level 0, old streaming, 4861427
silesia.tar, level 1, old streaming, 5336939
silesia.tar, level 3, old streaming, 4861427
silesia.tar, level 4, old streaming, 4799630
silesia.tar, level 5, old streaming, 4719261
silesia.tar, level 6, old streaming, 4677729
silesia.tar, level 7, old streaming, 4613544
silesia.tar, level 9, old streaming, 4555432
silesia.tar, level 13, old streaming, 4491765
silesia.tar, level 16, old streaming, 4356834
silesia.tar, level 19, old streaming, 4264392
silesia.tar, no source size, old streaming, 4861423
silesia.tar, uncompressed literals, old streaming, 4861427
silesia.tar, uncompressed literals optimal, old streaming, 4264392
silesia.tar, huffman literals, old streaming, 6190795
github, level -5, old streaming, 205285
github.tar, explicit params, advanced streaming, 41385
github.tar, uncompressed literals, advanced streaming, 41525
github.tar, uncompressed literals optimal, advanced streaming, 35397
github.tar, huffman literals, advanced streaming, 38874
github.tar, multithreaded with advanced params, advanced streaming, 41525
silesia, level -5, old streaming, 6963781
silesia, level -3, old streaming, 6610376
silesia, level -1, old streaming, 6179294
silesia, level 0, old streaming, 4842075
silesia, level 1, old streaming, 5310178
silesia, level 3, old streaming, 4842075
silesia, level 4, old streaming, 4779186
silesia, level 5, old streaming, 4666323
silesia, level 6, old streaming, 4603066
silesia, level 7, old streaming, 4566984
silesia, level 9, old streaming, 4543018
silesia, level 13, old streaming, 4493990
silesia, level 16, old streaming, 4359864
silesia, level 19, old streaming, 4296880
silesia, no source size, old streaming, 4842039
silesia, uncompressed literals, old streaming, 4842075
silesia, uncompressed literals optimal, old streaming, 4296880
silesia, huffman literals, old streaming, 6179294
silesia.tar, level -5, old streaming, 7043687
silesia.tar, level -3, old streaming, 6671317
silesia.tar, level -1, old streaming, 6187457
silesia.tar, level 0, old streaming, 4859271
silesia.tar, level 1, old streaming, 5333896
silesia.tar, level 3, old streaming, 4859271
silesia.tar, level 4, old streaming, 4797470
silesia.tar, level 5, old streaming, 4677748
silesia.tar, level 6, old streaming, 4613246
silesia.tar, level 7, old streaming, 4576664
silesia.tar, level 9, old streaming, 4552900
silesia.tar, level 13, old streaming, 4502956
silesia.tar, level 16, old streaming, 4360527
silesia.tar, level 19, old streaming, 4267266
silesia.tar, no source size, old streaming, 4859267
silesia.tar, uncompressed literals, old streaming, 4859271
silesia.tar, uncompressed literals optimal, old streaming, 4267266
silesia.tar, huffman literals, old streaming, 6187457
github, level -5, old streaming, 204411
github, level -5 with dict, old streaming, 46718
github, level -3, old streaming, 190643
github, level -3, old streaming, 193253
github, level -3 with dict, old streaming, 45395
github, level -1, old streaming, 175568
github, level -1, old streaming, 175468
github, level -1 with dict, old streaming, 43170
github, level 0, old streaming, 136335
github, level 0, old streaming, 136332
github, level 0 with dict, old streaming, 41148
github, level 1, old streaming, 142465
github, level 1, old streaming, 142365
github, level 1 with dict, old streaming, 41682
github, level 3, old streaming, 136335
github, level 3, old streaming, 136332
github, level 3 with dict, old streaming, 41148
github, level 4, old streaming, 136199
github, level 4 with dict, old streaming, 41251
@@ -1169,130 +1241,130 @@ github, level 7 with dict, old stre
github, level 9, old streaming, 135122
github, level 9 with dict, old streaming, 39437
github, level 13, old streaming, 134064
github, level 13 with dict, old streaming, 39743
github, level 13 with dict, old streaming, 39900
github, level 16, old streaming, 134064
github, level 16 with dict, old streaming, 37577
github, level 19, old streaming, 134064
github, level 19 with dict, old streaming, 37576
github, no source size, old streaming, 140632
github, no source size, old streaming, 140599
github, no source size with dict, old streaming, 40654
github, uncompressed literals, old streaming, 136335
github, uncompressed literals, old streaming, 136332
github, uncompressed literals optimal, old streaming, 134064
github, huffman literals, old streaming, 175568
github.tar, level -5, old streaming, 46747
github.tar, level -5 with dict, old streaming, 44440
github.tar, level -3, old streaming, 43537
github.tar, level -3 with dict, old streaming, 41112
github.tar, level -1, old streaming, 42465
github.tar, level -1 with dict, old streaming, 41196
github.tar, level 0, old streaming, 38441
github, huffman literals, old streaming, 175468
github.tar, level -5, old streaming, 51420
github.tar, level -5 with dict, old streaming, 45495
github.tar, level -3, old streaming, 45077
github.tar, level -3 with dict, old streaming, 41627
github.tar, level -1, old streaming, 42536
github.tar, level -1 with dict, old streaming, 41198
github.tar, level 0, old streaming, 38831
github.tar, level 0 with dict, old streaming, 37995
github.tar, level 1, old streaming, 39342
github.tar, level 1 with dict, old streaming, 38293
github.tar, level 3, old streaming, 38441
github.tar, level 1, old streaming, 39270
github.tar, level 1 with dict, old streaming, 38316
github.tar, level 3, old streaming, 38831
github.tar, level 3 with dict, old streaming, 37995
github.tar, level 4, old streaming, 38467
github.tar, level 4, old streaming, 38893
github.tar, level 4 with dict, old streaming, 37948
github.tar, level 5, old streaming, 39693
github.tar, level 5 with dict, old streaming, 39040
github.tar, level 6, old streaming, 39621
github.tar, level 6 with dict, old streaming, 38622
github.tar, level 7, old streaming, 39213
github.tar, level 7 with dict, old streaming, 37848
github.tar, level 9, old streaming, 36758
github.tar, level 9 with dict, old streaming, 36457
github.tar, level 13, old streaming, 35621
github.tar, level 13 with dict, old streaming, 38726
github.tar, level 16, old streaming, 40255
github.tar, level 16 with dict, old streaming, 33639
github.tar, level 19, old streaming, 32837
github.tar, level 19 with dict, old streaming, 32895
github.tar, no source size, old streaming, 38438
github.tar, level 5, old streaming, 39651
github.tar, level 5 with dict, old streaming, 39082
github.tar, level 6, old streaming, 39282
github.tar, level 6 with dict, old streaming, 38656
github.tar, level 7, old streaming, 38110
github.tar, level 7 with dict, old streaming, 37865
github.tar, level 9, old streaming, 36760
github.tar, level 9 with dict, old streaming, 36484
github.tar, level 13, old streaming, 35501
github.tar, level 13 with dict, old streaming, 37130
github.tar, level 16, old streaming, 40471
github.tar, level 16 with dict, old streaming, 33378
github.tar, level 19, old streaming, 32134
github.tar, level 19 with dict, old streaming, 32709
github.tar, no source size, old streaming, 38828
github.tar, no source size with dict, old streaming, 38000
github.tar, uncompressed literals, old streaming, 38441
github.tar, uncompressed literals optimal, old streaming, 32837
github.tar, huffman literals, old streaming, 42465
silesia, level -5, old streaming advanced, 6882505
silesia, level -3, old streaming advanced, 6568376
silesia, level -1, old streaming advanced, 6183403
silesia, level 0, old streaming advanced, 4849552
silesia, level 1, old streaming advanced, 5314162
silesia, level 3, old streaming advanced, 4849552
silesia, level 4, old streaming advanced, 4786970
silesia, level 5, old streaming advanced, 4707794
silesia, level 6, old streaming advanced, 4666383
silesia, level 7, old streaming advanced, 4603381
silesia, level 9, old streaming advanced, 4546001
silesia, level 13, old streaming advanced, 4482135
silesia, level 16, old streaming advanced, 4360251
silesia, level 19, old streaming advanced, 4283237
silesia, no source size, old streaming advanced, 4849516
silesia, long distance mode, old streaming advanced, 4849552
silesia, multithreaded, old streaming advanced, 4849552
silesia, multithreaded long distance mode, old streaming advanced, 4849552
silesia, small window log, old streaming advanced, 7112062
github.tar, uncompressed literals, old streaming, 38831
github.tar, uncompressed literals optimal, old streaming, 32134
github.tar, huffman literals, old streaming, 42536
silesia, level -5, old streaming advanced, 6963781
silesia, level -3, old streaming advanced, 6610376
silesia, level -1, old streaming advanced, 6179294
silesia, level 0, old streaming advanced, 4842075
silesia, level 1, old streaming advanced, 5310178
silesia, level 3, old streaming advanced, 4842075
silesia, level 4, old streaming advanced, 4779186
silesia, level 5, old streaming advanced, 4666323
silesia, level 6, old streaming advanced, 4603066
silesia, level 7, old streaming advanced, 4566984
silesia, level 9, old streaming advanced, 4543018
silesia, level 13, old streaming advanced, 4493990
silesia, level 16, old streaming advanced, 4359864
silesia, level 19, old streaming advanced, 4296880
silesia, no source size, old streaming advanced, 4842039
silesia, long distance mode, old streaming advanced, 4842075
silesia, multithreaded, old streaming advanced, 4842075
silesia, multithreaded long distance mode, old streaming advanced, 4842075
silesia, small window log, old streaming advanced, 7111103
silesia, small hash log, old streaming advanced, 6526141
silesia, small chain log, old streaming advanced, 4912197
silesia, explicit params, old streaming advanced, 4795887
silesia, uncompressed literals, old streaming advanced, 4849552
silesia, uncompressed literals optimal, old streaming advanced, 4283237
silesia, huffman literals, old streaming advanced, 6183403
silesia, multithreaded with advanced params, old streaming advanced, 4849552
silesia.tar, level -5, old streaming advanced, 6982759
silesia.tar, level -3, old streaming advanced, 6641283
silesia.tar, level -1, old streaming advanced, 6190795
silesia.tar, level 0, old streaming advanced, 4861427
silesia.tar, level 1, old streaming advanced, 5336939
silesia.tar, level 3, old streaming advanced, 4861427
silesia.tar, level 4, old streaming advanced, 4799630
silesia.tar, level 5, old streaming advanced, 4719261
silesia.tar, level 6, old streaming advanced, 4677729
silesia.tar, level 7, old streaming advanced, 4613544
silesia.tar, level 9, old streaming advanced, 4555432
silesia.tar, level 13, old streaming advanced, 4491765
silesia.tar, level 16, old streaming advanced, 4356834
silesia.tar, level 19, old streaming advanced, 4264392
silesia.tar, no source size, old streaming advanced, 4861423
silesia.tar, long distance mode, old streaming advanced, 4861427
silesia.tar, multithreaded, old streaming advanced, 4861427
silesia.tar, multithreaded long distance mode, old streaming advanced, 4861427
silesia.tar, small window log, old streaming advanced, 7118772
silesia.tar, small hash log, old streaming advanced, 6529235
silesia, explicit params, old streaming advanced, 4795452
silesia, uncompressed literals, old streaming advanced, 4842075
silesia, uncompressed literals optimal, old streaming advanced, 4296880
silesia, huffman literals, old streaming advanced, 6179294
silesia, multithreaded with advanced params, old streaming advanced, 4842075
silesia.tar, level -5, old streaming advanced, 7043687
silesia.tar, level -3, old streaming advanced, 6671317
silesia.tar, level -1, old streaming advanced, 6187457
silesia.tar, level 0, old streaming advanced, 4859271
silesia.tar, level 1, old streaming advanced, 5333896
silesia.tar, level 3, old streaming advanced, 4859271
silesia.tar, level 4, old streaming advanced, 4797470
silesia.tar, level 5, old streaming advanced, 4677748
silesia.tar, level 6, old streaming advanced, 4613246
silesia.tar, level 7, old streaming advanced, 4576664
silesia.tar, level 9, old streaming advanced, 4552900
silesia.tar, level 13, old streaming advanced, 4502956
silesia.tar, level 16, old streaming advanced, 4360527
silesia.tar, level 19, old streaming advanced, 4267266
silesia.tar, no source size, old streaming advanced, 4859267
silesia.tar, long distance mode, old streaming advanced, 4859271
silesia.tar, multithreaded, old streaming advanced, 4859271
silesia.tar, multithreaded long distance mode, old streaming advanced, 4859271
silesia.tar, small window log, old streaming advanced, 7117562
silesia.tar, small hash log, old streaming advanced, 6529234
silesia.tar, small chain log, old streaming advanced, 4917021
silesia.tar, explicit params, old streaming advanced, 4807401
silesia.tar, uncompressed literals, old streaming advanced, 4861427
silesia.tar, uncompressed literals optimal, old streaming advanced, 4264392
silesia.tar, huffman literals, old streaming advanced, 6190795
silesia.tar, multithreaded with advanced params, old streaming advanced, 4861427
github, level -5, old streaming advanced, 216734
silesia.tar, explicit params, old streaming advanced, 4806873
silesia.tar, uncompressed literals, old streaming advanced, 4859271
silesia.tar, uncompressed literals optimal, old streaming advanced, 4267266
silesia.tar, huffman literals, old streaming advanced, 6187457
silesia.tar, multithreaded with advanced params, old streaming advanced, 4859271
github, level -5, old streaming advanced, 213265
github, level -5 with dict, old streaming advanced, 49562
github, level -3, old streaming advanced, 192160
github, level -3, old streaming advanced, 196126
github, level -3 with dict, old streaming advanced, 44956
github, level -1, old streaming advanced, 181108
github, level -1, old streaming advanced, 181107
github, level -1 with dict, old streaming advanced, 42383
github, level 0, old streaming advanced, 141104
github, level 0 with dict, old streaming advanced, 41113
github, level 1, old streaming advanced, 143692
github, level 1, old streaming advanced, 143693
github, level 1 with dict, old streaming advanced, 42430
github, level 3, old streaming advanced, 141104
github, level 3 with dict, old streaming advanced, 41113
github, level 4, old streaming advanced, 141104
github, level 4 with dict, old streaming advanced, 41084
github, level 5, old streaming advanced, 139399
github, level 5 with dict, old streaming advanced, 38633
github, level 6, old streaming advanced, 139402
github, level 6 with dict, old streaming advanced, 38723
github, level 5, old streaming advanced, 139402
github, level 5 with dict, old streaming advanced, 38723
github, level 6, old streaming advanced, 138676
github, level 6 with dict, old streaming advanced, 38744
github, level 7, old streaming advanced, 138676
github, level 7 with dict, old streaming advanced, 38744
github, level 7 with dict, old streaming advanced, 38924
github, level 9, old streaming advanced, 138676
github, level 9 with dict, old streaming advanced, 38981
github, level 13, old streaming advanced, 138676
github, level 13 with dict, old streaming advanced, 39731
github, level 13 with dict, old streaming advanced, 39725
github, level 16, old streaming advanced, 138676
github, level 16 with dict, old streaming advanced, 40789
github, level 19, old streaming advanced, 134064
github, level 19 with dict, old streaming advanced, 37576
github, no source size, old streaming advanced, 140632
github, no source size, old streaming advanced, 140599
github, no source size with dict, old streaming advanced, 40608
github, long distance mode, old streaming advanced, 141104
github, multithreaded, old streaming advanced, 141104
@@ -1303,49 +1375,49 @@ github, small chain log, old stre
github, explicit params, old streaming advanced, 140937
github, uncompressed literals, old streaming advanced, 141104
github, uncompressed literals optimal, old streaming advanced, 134064
github, huffman literals, old streaming advanced, 181108
github, huffman literals, old streaming advanced, 181107
github, multithreaded with advanced params, old streaming advanced, 141104
github.tar, level -5, old streaming advanced, 46747
github.tar, level -5 with dict, old streaming advanced, 44824
github.tar, level -3, old streaming advanced, 43537
github.tar, level -3 with dict, old streaming advanced, 41800
github.tar, level -1, old streaming advanced, 42465
github.tar, level -1 with dict, old streaming advanced, 41471
github.tar, level 0, old streaming advanced, 38441
github.tar, level -5, old streaming advanced, 51420
github.tar, level -5 with dict, old streaming advanced, 46091
github.tar, level -3, old streaming advanced, 45077
github.tar, level -3 with dict, old streaming advanced, 42222
github.tar, level -1, old streaming advanced, 42536
github.tar, level -1 with dict, old streaming advanced, 41494
github.tar, level 0, old streaming advanced, 38831
github.tar, level 0 with dict, old streaming advanced, 38013
github.tar, level 1, old streaming advanced, 39342
github.tar, level 1 with dict, old streaming advanced, 38940
github.tar, level 3, old streaming advanced, 38441
github.tar, level 1, old streaming advanced, 39270
github.tar, level 1 with dict, old streaming advanced, 38934
github.tar, level 3, old streaming advanced, 38831
github.tar, level 3 with dict, old streaming advanced, 38013
github.tar, level 4, old streaming advanced, 38467
github.tar, level 4, old streaming advanced, 38893
github.tar, level 4 with dict, old streaming advanced, 38063
github.tar, level 5, old streaming advanced, 39693
github.tar, level 5 with dict, old streaming advanced, 39049
github.tar, level 6, old streaming advanced, 39621
github.tar, level 6 with dict, old streaming advanced, 38959
github.tar, level 7, old streaming advanced, 39213
github.tar, level 7 with dict, old streaming advanced, 38573
github.tar, level 9, old streaming advanced, 36758
github.tar, level 9 with dict, old streaming advanced, 36233
github.tar, level 13, old streaming advanced, 35621
github.tar, level 13 with dict, old streaming advanced, 36035
github.tar, level 16, old streaming advanced, 40255
github.tar, level 16 with dict, old streaming advanced, 38736
github.tar, level 19, old streaming advanced, 32837
github.tar, level 19 with dict, old streaming advanced, 32876
github.tar, no source size, old streaming advanced, 38438
github.tar, level 5, old streaming advanced, 39651
github.tar, level 5 with dict, old streaming advanced, 38997
github.tar, level 6, old streaming advanced, 39282
github.tar, level 6 with dict, old streaming advanced, 38640
github.tar, level 7, old streaming advanced, 38110
github.tar, level 7 with dict, old streaming advanced, 37387
github.tar, level 9, old streaming advanced, 36760
github.tar, level 9 with dict, old streaming advanced, 36312
github.tar, level 13, old streaming advanced, 35501
github.tar, level 13 with dict, old streaming advanced, 35807
github.tar, level 16, old streaming advanced, 40471
github.tar, level 16 with dict, old streaming advanced, 38578
github.tar, level 19, old streaming advanced, 32134
github.tar, level 19 with dict, old streaming advanced, 32702
github.tar, no source size, old streaming advanced, 38828
github.tar, no source size with dict, old streaming advanced, 38015
github.tar, long distance mode, old streaming advanced, 38441
github.tar, multithreaded, old streaming advanced, 38441
github.tar, multithreaded long distance mode, old streaming advanced, 38441
github.tar, long distance mode, old streaming advanced, 38831
github.tar, multithreaded, old streaming advanced, 38831
github.tar, multithreaded long distance mode, old streaming advanced, 38831
github.tar, small window log, old streaming advanced, 199561
github.tar, small hash log, old streaming advanced, 129870
github.tar, small chain log, old streaming advanced, 41669
github.tar, explicit params, old streaming advanced, 41227
github.tar, uncompressed literals, old streaming advanced, 38441
github.tar, uncompressed literals optimal, old streaming advanced, 32837
github.tar, huffman literals, old streaming advanced, 42465
github.tar, multithreaded with advanced params, old streaming advanced, 38441
github.tar, explicit params, old streaming advanced, 41385
github.tar, uncompressed literals, old streaming advanced, 38831
github.tar, uncompressed literals optimal, old streaming advanced, 32134
github.tar, huffman literals, old streaming advanced, 42536
github.tar, multithreaded with advanced params, old streaming advanced, 38831
github, level -5 with dict, old streaming cdict, 46718
github, level -3 with dict, old streaming cdict, 45395
github, level -1 with dict, old streaming cdict, 43170
@@ -1357,24 +1429,24 @@ github, level 5 with dict, old stre
github, level 6 with dict, old streaming cdict, 38671
github, level 7 with dict, old streaming cdict, 38758
github, level 9 with dict, old streaming cdict, 39437
github, level 13 with dict, old streaming cdict, 39743
github, level 13 with dict, old streaming cdict, 39900
github, level 16 with dict, old streaming cdict, 37577
github, level 19 with dict, old streaming cdict, 37576
github, no source size with dict, old streaming cdict, 40654
github.tar, level -5 with dict, old streaming cdict, 45018
github.tar, level -3 with dict, old streaming cdict, 41886
github.tar, level -1 with dict, old streaming cdict, 41636
github.tar, level -5 with dict, old streaming cdict, 46276
github.tar, level -3 with dict, old streaming cdict, 42354
github.tar, level -1 with dict, old streaming cdict, 41662
github.tar, level 0 with dict, old streaming cdict, 37956
github.tar, level 1 with dict, old streaming cdict, 38766
github.tar, level 1 with dict, old streaming cdict, 38761
github.tar, level 3 with dict, old streaming cdict, 37956
github.tar, level 4 with dict, old streaming cdict, 37927
github.tar, level 5 with dict, old streaming cdict, 39037
github.tar, level 6 with dict, old streaming cdict, 38962
github.tar, level 7 with dict, old streaming cdict, 38582
github.tar, level 9 with dict, old streaming cdict, 36350
github.tar, level 13 with dict, old streaming cdict, 36372
github.tar, level 16 with dict, old streaming cdict, 39353
github.tar, level 19 with dict, old streaming cdict, 32676
github.tar, level 5 with dict, old streaming cdict, 38999
github.tar, level 6 with dict, old streaming cdict, 38648
github.tar, level 7 with dict, old streaming cdict, 37436
github.tar, level 9 with dict, old streaming cdict, 36401
github.tar, level 13 with dict, old streaming cdict, 36010
github.tar, level 16 with dict, old streaming cdict, 39081
github.tar, level 19 with dict, old streaming cdict, 32474
github.tar, no source size with dict, old streaming cdict, 38000
github, level -5 with dict, old streaming advanced cdict, 49562
github, level -3 with dict, old streaming advanced cdict, 44956
@@ -1383,11 +1455,11 @@ github, level 0 with dict, old stre
github, level 1 with dict, old streaming advanced cdict, 42430
github, level 3 with dict, old streaming advanced cdict, 41113
github, level 4 with dict, old streaming advanced cdict, 41084
github, level 5 with dict, old streaming advanced cdict, 38633
github, level 6 with dict, old streaming advanced cdict, 38723
github, level 7 with dict, old streaming advanced cdict, 38744
github, level 5 with dict, old streaming advanced cdict, 38723
github, level 6 with dict, old streaming advanced cdict, 38744
github, level 7 with dict, old streaming advanced cdict, 38924
github, level 9 with dict, old streaming advanced cdict, 38981
github, level 13 with dict, old streaming advanced cdict, 39731
github, level 13 with dict, old streaming advanced cdict, 39725
github, level 16 with dict, old streaming advanced cdict, 40789
github, level 19 with dict, old streaming advanced cdict, 37576
github, no source size with dict, old streaming advanced cdict, 40608
@@ -1398,11 +1470,11 @@ github.tar, level 0 with dict, old stre
github.tar, level 1 with dict, old streaming advanced cdict, 39002
github.tar, level 3 with dict, old streaming advanced cdict, 38013
github.tar, level 4 with dict, old streaming advanced cdict, 38063
github.tar, level 5 with dict, old streaming advanced cdict, 39049
github.tar, level 6 with dict, old streaming advanced cdict, 38959
github.tar, level 7 with dict, old streaming advanced cdict, 38573
github.tar, level 9 with dict, old streaming advanced cdict, 36233
github.tar, level 13 with dict, old streaming advanced cdict, 36035
github.tar, level 16 with dict, old streaming advanced cdict, 38736
github.tar, level 19 with dict, old streaming advanced cdict, 32876
github.tar, level 5 with dict, old streaming advanced cdict, 38997
github.tar, level 6 with dict, old streaming advanced cdict, 38640
github.tar, level 7 with dict, old streaming advanced cdict, 37387
github.tar, level 9 with dict, old streaming advanced cdict, 36312
github.tar, level 13 with dict, old streaming advanced cdict, 35807
github.tar, level 16 with dict, old streaming advanced cdict, 38578
github.tar, level 19 with dict, old streaming advanced cdict, 32702
github.tar, no source size with dict, old streaming advanced cdict, 38015
1 Data Config Method Total compressed size
2 silesia.tar level -5 compress simple 6738593 6853608
3 silesia.tar level -3 compress simple 6446372 6505969
4 silesia.tar level -1 compress simple 6186042 6179026
5 silesia.tar level 0 compress simple 4861425 4854086
6 silesia.tar level 1 compress simple 5334885 5327373
7 silesia.tar level 3 compress simple 4861425 4854086
8 silesia.tar level 4 compress simple 4799630 4791503
9 silesia.tar level 5 compress simple 4719256 4677740
10 silesia.tar level 6 compress simple 4677721 4613242
11 silesia.tar level 7 compress simple 4613541 4576661
12 silesia.tar level 9 compress simple 4555426 4552899
13 silesia.tar level 13 compress simple 4491764 4502956
14 silesia.tar level 16 compress simple 4381332 4360527
15 silesia.tar level 19 compress simple 4281605 4267266
16 silesia.tar uncompressed literals compress simple 4861425 4854086
17 silesia.tar uncompressed literals optimal compress simple 4281605 4267266
18 silesia.tar huffman literals compress simple 6186042 6179026
19 github.tar level -5 compress simple 46856 52110
20 github.tar level -3 compress simple 43754 45678
21 github.tar level -1 compress simple 42490 42560
22 github.tar level 0 compress simple 38441 38831
23 github.tar level 1 compress simple 39265 39200
24 github.tar level 3 compress simple 38441 38831
25 github.tar level 4 compress simple 38467 38893
26 github.tar level 5 compress simple 39693 39651
27 github.tar level 6 compress simple 39621 39282
28 github.tar level 7 compress simple 39213 38110
29 github.tar level 9 compress simple 36758 36760
30 github.tar level 13 compress simple 35621 35501
31 github.tar level 16 compress simple 40255 40471
32 github.tar level 19 compress simple 32837 32134
33 github.tar uncompressed literals compress simple 38441 38831
34 github.tar uncompressed literals optimal compress simple 32837 32134
35 github.tar huffman literals compress simple 42490 42560
36 silesia level -5 compress cctx 6737607 6852424
37 silesia level -3 compress cctx 6444677 6503413
38 silesia level -1 compress cctx 6178460 6172178
39 silesia level 0 compress cctx 4849552 4842075
40 silesia level 1 compress cctx 5313204 5306426
41 silesia level 3 compress cctx 4849552 4842075
42 silesia level 4 compress cctx 4786970 4779186
43 silesia level 5 compress cctx 4707794 4666323
44 silesia level 6 compress cctx 4666383 4603066
45 silesia level 7 compress cctx 4603381 4566984
46 silesia level 9 compress cctx 4546001 4543018
47 silesia level 13 compress cctx 4482135 4493990
48 silesia level 16 compress cctx 4377465 4359864
49 silesia level 19 compress cctx 4293330 4296880
50 silesia long distance mode compress cctx 4849552 4842075
51 silesia multithreaded compress cctx 4849552 4842075
52 silesia multithreaded long distance mode compress cctx 4849552 4842075
53 silesia small window log compress cctx 7084179 7082951
54 silesia small hash log compress cctx 6555021 6526141
55 silesia small chain log compress cctx 4931148 4912197
56 silesia explicit params compress cctx 4794479 4794052
57 silesia uncompressed literals compress cctx 4849552 4842075
58 silesia uncompressed literals optimal compress cctx 4293330 4296880
59 silesia huffman literals compress cctx 6178460 6172178
60 silesia multithreaded with advanced params compress cctx 4849552 4842075
61 github level -5 compress cctx 205285 204411
62 github level -5 with dict compress cctx 47294
63 github level -3 compress cctx 190643 193253
64 github level -3 with dict compress cctx 48047
65 github level -1 compress cctx 175568 175468
66 github level -1 with dict compress cctx 43527
67 github level 0 compress cctx 136335 136332
68 github level 0 with dict compress cctx 41534
69 github level 1 compress cctx 142465 142365
70 github level 1 with dict compress cctx 42157
71 github level 3 compress cctx 136335 136332
72 github level 3 with dict compress cctx 41534
73 github level 4 compress cctx 136199
74 github level 4 with dict compress cctx 41725
86 github level 16 with dict compress cctx 37568
87 github level 19 compress cctx 134064
88 github level 19 with dict compress cctx 37567
89 github long distance mode compress cctx 141102 141069
90 github multithreaded compress cctx 141102 141069
91 github multithreaded long distance mode compress cctx 141102 141069
92 github small window log compress cctx 141102 141069
93 github small hash log compress cctx 138949
94 github small chain log compress cctx 139242
95 github explicit params compress cctx 140932
96 github uncompressed literals compress cctx 136335 136332
97 github uncompressed literals optimal compress cctx 134064
98 github huffman literals compress cctx 175568 175468
99 github multithreaded with advanced params compress cctx 141102 141069
100 silesia level -5 zstdcli 6737655 6852472
101 silesia level -3 zstdcli 6444725 6503461
102 silesia level -1 zstdcli 6178508 6172226
103 silesia level 0 zstdcli 4849600 4842123
104 silesia level 1 zstdcli 5313252 5306474
105 silesia level 3 zstdcli 4849600 4842123
106 silesia level 4 zstdcli 4787018 4779234
107 silesia level 5 zstdcli 4707842 4666371
108 silesia level 6 zstdcli 4666431 4603114
109 silesia level 7 zstdcli 4603429 4567032
110 silesia level 9 zstdcli 4546049 4543066
111 silesia level 13 zstdcli 4482183 4494038
112 silesia level 16 zstdcli 4360299 4359912
113 silesia level 19 zstdcli 4283285 4296928
114 silesia long distance mode zstdcli 4840806 4833785
115 silesia multithreaded zstdcli 4849600 4842123
116 silesia multithreaded long distance mode zstdcli 4840806 4833785
117 silesia small window log zstdcli 7095967 7095048
118 silesia small hash log zstdcli 6526189
119 silesia small chain log zstdcli 4912245
120 silesia explicit params zstdcli 4795856 4795432
121 silesia uncompressed literals zstdcli 5128030 5120614
122 silesia uncompressed literals optimal zstdcli 4317944 4319566
123 silesia huffman literals zstdcli 5326316 5321394
124 silesia multithreaded with advanced params zstdcli 5128030 5120614
125 silesia.tar level -5 zstdcli 6738934 6853994
126 silesia.tar level -3 zstdcli 6448419 6506742
127 silesia.tar level -1 zstdcli 6186912 6179765
128 silesia.tar level 0 zstdcli 4861512 4854164
129 silesia.tar level 1 zstdcli 5336318 5328534
130 silesia.tar level 3 zstdcli 4861512 4854164
131 silesia.tar level 4 zstdcli 4800529 4792352
132 silesia.tar level 5 zstdcli 4720121 4678682
133 silesia.tar level 6 zstdcli 4678661 4614125
134 silesia.tar level 7 zstdcli 4614424 4578719
135 silesia.tar level 9 zstdcli 4556062 4552903
136 silesia.tar level 13 zstdcli 4491768 4502960
137 silesia.tar level 16 zstdcli 4356831 4360531
138 silesia.tar level 19 zstdcli 4264491 4267270
139 silesia.tar no source size zstdcli 4861508 4854160
140 silesia.tar long distance mode zstdcli 4853226 4845745
141 silesia.tar multithreaded zstdcli 4861512 4854164
142 silesia.tar multithreaded long distance mode zstdcli 4853226 4845745
143 silesia.tar small window log zstdcli 7101576 7100701
144 silesia.tar small hash log zstdcli 6529290 6529289
145 silesia.tar small chain log zstdcli 4917022
146 silesia.tar explicit params zstdcli 4821274 4820713
147 silesia.tar uncompressed literals zstdcli 5129559 5122571
148 silesia.tar uncompressed literals optimal zstdcli 4307457 4310145
149 silesia.tar huffman literals zstdcli 5347610 5342054
150 silesia.tar multithreaded with advanced params zstdcli 5129559 5122571
151 github level -5 zstdcli 207285 206411
152 github level -5 with dict zstdcli 48718
153 github level -3 zstdcli 192643 195253
154 github level -3 with dict zstdcli 47395
155 github level -1 zstdcli 177568 177468
156 github level -1 with dict zstdcli 45170
157 github level 0 zstdcli 138335 138332
158 github level 0 with dict zstdcli 43148
159 github level 1 zstdcli 144465 144365
160 github level 1 with dict zstdcli 43682
161 github level 3 zstdcli 138335 138332
162 github level 3 with dict zstdcli 43148
163 github level 4 zstdcli 138199
164 github level 4 with dict zstdcli 43251
165 github level 5 zstdcli 137121
166 github level 5 with dict zstdcli 40728
167 github level 6 zstdcli 137122
168 github level 6 with dict zstdcli 40630 40636
169 github level 7 zstdcli 137122
170 github level 7 with dict zstdcli 40747 40745
171 github level 9 zstdcli 137122
172 github level 9 with dict zstdcli 41338 41393
173 github level 13 zstdcli 136064
174 github level 13 with dict zstdcli 41743 41900
175 github level 16 zstdcli 136064
176 github level 16 with dict zstdcli 39577
177 github level 19 zstdcli 136064
178 github level 19 with dict zstdcli 39576
179 github long distance mode zstdcli 138335 138332
180 github multithreaded zstdcli 138335 138332
181 github multithreaded long distance mode zstdcli 138335 138332
182 github small window log zstdcli 138335 138332
183 github small hash log zstdcli 137590
184 github small chain log zstdcli 138341
185 github explicit params zstdcli 136197
186 github uncompressed literals zstdcli 167915 167911
187 github uncompressed literals optimal zstdcli 159227
188 github huffman literals zstdcli 144465 144365
189 github multithreaded with advanced params zstdcli 167915 167911
190 github.tar level -5 zstdcli 46860 52114
191 github.tar level -5 with dict zstdcli 44575 46502
192 github.tar level -3 zstdcli 43758 45682
193 github.tar level -3 with dict zstdcli 41451 42181
194 github.tar level -1 zstdcli 42494 42564
195 github.tar level -1 with dict zstdcli 41135 41140
196 github.tar level 0 zstdcli 38445 38835
197 github.tar level 0 with dict zstdcli 37999
198 github.tar level 1 zstdcli 39269 39204
199 github.tar level 1 with dict zstdcli 38284 38288
200 github.tar level 3 zstdcli 38445 38835
201 github.tar level 3 with dict zstdcli 37999
202 github.tar level 4 zstdcli 38471 38897
203 github.tar level 4 with dict zstdcli 37952
204 github.tar level 5 zstdcli 39697 39655
205 github.tar level 5 with dict zstdcli 39032 39071
206 github.tar level 6 zstdcli 39625 39286
207 github.tar level 6 with dict zstdcli 38614 38638
208 github.tar level 7 zstdcli 39217 38114
209 github.tar level 7 with dict zstdcli 37871 37886
210 github.tar level 9 zstdcli 36762 36764
211 github.tar level 9 with dict zstdcli 36641 36632
212 github.tar level 13 zstdcli 35625 35505
213 github.tar level 13 with dict zstdcli 38730 37134
214 github.tar level 16 zstdcli 40259 40475
215 github.tar level 16 with dict zstdcli 33643 33382
216 github.tar level 19 zstdcli 32841 32138
217 github.tar level 19 with dict zstdcli 32899 32713
218 github.tar no source size zstdcli 38442 38832
219 github.tar no source size with dict zstdcli 38004
220 github.tar long distance mode zstdcli 39730 40236
221 github.tar multithreaded zstdcli 38445 38835
222 github.tar multithreaded long distance mode zstdcli 39730 40236
223 github.tar small window log zstdcli 198544
224 github.tar small hash log zstdcli 129874
225 github.tar small chain log zstdcli 41673
226 github.tar explicit params zstdcli 41227 41385
227 github.tar uncompressed literals zstdcli 41126 41529
228 github.tar uncompressed literals optimal zstdcli 35392 35401
229 github.tar huffman literals zstdcli 38781 38857
230 github.tar multithreaded with advanced params zstdcli 41126 41529
231 silesia level -5 advanced one pass 6737607 6852424
232 silesia level -3 advanced one pass 6444677 6503413
233 silesia level -1 advanced one pass 6178460 6172178
234 silesia level 0 advanced one pass 4849552 4842075
235 silesia level 1 advanced one pass 5313204 5306426
236 silesia level 3 advanced one pass 4849552 4842075
237 silesia level 4 advanced one pass 4786970 4779186
238 silesia level 5 row 1 advanced one pass 4710236 4666323
239 silesia level 5 row 2 advanced one pass 4707794 4670136
240 silesia level 5 advanced one pass 4707794 4666323
241 silesia level 6 advanced one pass 4666383 4603066
242 silesia level 7 row 1 advanced one pass 4596296 4566984
243 silesia level 7 row 2 advanced one pass 4603381 4564868
244 silesia level 7 advanced one pass 4603381 4566984
245 silesia level 9 advanced one pass 4546001 4543018
246 silesia level 12 row 1 level 11 row 1 advanced one pass 4519288 4505046
247 silesia level 12 row 2 level 11 row 2 advanced one pass 4521397 4503116
248 silesia level 13 level 12 row 1 advanced one pass 4482135 4505046
249 silesia level 16 level 12 row 2 advanced one pass 4360251 4503116
250 silesia level 19 level 13 advanced one pass 4283237 4493990
251 silesia no source size level 16 advanced one pass 4849552 4359864
252 silesia long distance mode level 19 advanced one pass 4840738 4296880
253 silesia multithreaded no source size advanced one pass 4849552 4842075
254 silesia multithreaded long distance mode long distance mode advanced one pass 4840758 4833710
255 silesia small window log multithreaded advanced one pass 7095919 4842075
256 silesia multithreaded long distance mode advanced one pass 4833737
257 silesia small window log advanced one pass 7095000
258 silesia small hash log advanced one pass 6526141
259 silesia small chain log advanced one pass 4912197
260 silesia explicit params advanced one pass 4795856 4795432
261 silesia uncompressed literals advanced one pass 5127982 5120566
262 silesia uncompressed literals optimal advanced one pass 4317896 4319518
263 silesia huffman literals advanced one pass 5326268 5321346
264 silesia multithreaded with advanced params advanced one pass 5127982 5120566
265 silesia.tar level -5 advanced one pass 6738593 6853608
266 silesia.tar level -3 advanced one pass 6446372 6505969
267 silesia.tar level -1 advanced one pass 6186042 6179026
268 silesia.tar level 0 advanced one pass 4861425 4854086
269 silesia.tar level 1 advanced one pass 5334885 5327373
270 silesia.tar level 3 advanced one pass 4861425 4854086
271 silesia.tar level 4 advanced one pass 4799630 4791503
272 silesia.tar level 5 row 1 advanced one pass 4722324 4677740
273 silesia.tar level 5 row 2 advanced one pass 4719256 4682161
274 silesia.tar level 5 advanced one pass 4719256 4677740
275 silesia.tar level 6 advanced one pass 4677721 4613242
276 silesia.tar level 7 row 1 advanced one pass 4606715 4576661
277 silesia.tar level 7 row 2 advanced one pass 4613541 4575393
278 silesia.tar level 7 advanced one pass 4613541 4576661
279 silesia.tar level 9 advanced one pass 4555426 4552899
280 silesia.tar level 12 row 1 level 11 row 1 advanced one pass 4529459 4514432
281 silesia.tar level 12 row 2 level 11 row 2 advanced one pass 4530256 4513604
282 silesia.tar level 13 level 12 row 1 advanced one pass 4491764 4514049
283 silesia.tar level 16 level 12 row 2 advanced one pass 4356827 4513797
284 silesia.tar level 19 level 13 advanced one pass 4264487 4502956
285 silesia.tar no source size level 16 advanced one pass 4861425 4360527
286 silesia.tar long distance mode level 19 advanced one pass 4847754 4267266
287 silesia.tar multithreaded no source size advanced one pass 4861508 4854086
288 silesia.tar multithreaded long distance mode long distance mode advanced one pass 4853222 4840452
289 silesia.tar small window log multithreaded advanced one pass 7101530 4854160
290 silesia.tar small hash log multithreaded long distance mode advanced one pass 6529232 4845741
291 silesia.tar small window log advanced one pass 7100655
292 silesia.tar small hash log advanced one pass 6529231
293 silesia.tar small chain log advanced one pass 4917041
294 silesia.tar explicit params advanced one pass 4807380 4806855
295 silesia.tar uncompressed literals advanced one pass 5129458 5122473
296 silesia.tar uncompressed literals optimal advanced one pass 4307453 4310141
297 silesia.tar huffman literals advanced one pass 5347335 5341685
298 silesia.tar multithreaded with advanced params advanced one pass 5129555 5122567
299 github level -5 advanced one pass 205285 204411
300 github level -5 with dict advanced one pass 46718
301 github level -3 advanced one pass 190643 193253
302 github level -3 with dict advanced one pass 45395
303 github level -1 advanced one pass 175568 175468
304 github level -1 with dict advanced one pass 43170
305 github level 0 advanced one pass 136335 136332
306 github level 0 with dict advanced one pass 41148
307 github level 0 with dict dms advanced one pass 41148
308 github level 0 with dict dds advanced one pass 41148
309 github level 0 with dict copy advanced one pass 41124
310 github level 0 with dict load advanced one pass 42252
311 github level 1 advanced one pass 142465 142365
312 github level 1 with dict advanced one pass 41682
313 github level 1 with dict dms advanced one pass 41682
314 github level 1 with dict dds advanced one pass 41682
315 github level 1 with dict copy advanced one pass 41674
316 github level 1 with dict load advanced one pass 43755
317 github level 3 advanced one pass 136335 136332
318 github level 3 with dict advanced one pass 41148
319 github level 3 with dict dms advanced one pass 41148
320 github level 3 with dict dds advanced one pass 41148
326 github level 4 with dict dds advanced one pass 41251
327 github level 4 with dict copy advanced one pass 41216
328 github level 4 with dict load advanced one pass 41159
329 github level 5 row 1 advanced one pass 135121 134584
330 github level 5 row 1 with dict dms advanced one pass 38938 38758
331 github level 5 row 1 with dict dds advanced one pass 38732 38728
332 github level 5 row 1 with dict copy advanced one pass 38934 38759
333 github level 5 row 1 with dict load advanced one pass 40725 41518
334 github level 5 row 2 advanced one pass 134584 135121
335 github level 5 row 2 with dict dms advanced one pass 38758 38938
336 github level 5 row 2 with dict dds advanced one pass 38728 38732
337 github level 5 row 2 with dict copy advanced one pass 38759 38934
338 github level 5 row 2 with dict load advanced one pass 41518 40725
339 github level 5 advanced one pass 135121
340 github level 5 with dict advanced one pass 38758
341 github level 5 with dict dms advanced one pass 38758
345 github level 6 advanced one pass 135122
346 github level 6 with dict advanced one pass 38671
347 github level 6 with dict dms advanced one pass 38671
348 github level 6 with dict dds advanced one pass 38630 38636
349 github level 6 with dict copy advanced one pass 38669
350 github level 6 with dict load advanced one pass 40695
351 github level 7 row 1 advanced one pass 135122 134584
352 github level 7 row 1 with dict dms advanced one pass 38771 38758
353 github level 7 row 1 with dict dds advanced one pass 38771 38745
354 github level 7 row 1 with dict copy advanced one pass 38745 38755
355 github level 7 row 1 with dict load advanced one pass 40695 43154
356 github level 7 row 2 advanced one pass 134584 135122
357 github level 7 row 2 with dict dms advanced one pass 38758 38860
358 github level 7 row 2 with dict dds advanced one pass 38747 38766
359 github level 7 row 2 with dict copy advanced one pass 38755 38834
360 github level 7 row 2 with dict load advanced one pass 41030 40695
361 github level 7 advanced one pass 135122
362 github level 7 with dict advanced one pass 38758
363 github level 7 with dict dms advanced one pass 38758
364 github level 7 with dict dds advanced one pass 38747 38745
365 github level 7 with dict copy advanced one pass 38755
366 github level 7 with dict load advanced one pass 40695
367 github level 9 advanced one pass 135122
368 github level 9 with dict advanced one pass 39437
369 github level 9 with dict dms advanced one pass 39437
370 github level 9 with dict dds advanced one pass 39338 39393
371 github level 9 with dict copy advanced one pass 39398
372 github level 9 with dict load advanced one pass 41710
373 github level 11 row 1 advanced one pass 135119
374 github level 11 row 1 with dict dms advanced one pass 39671
375 github level 11 row 1 with dict dds advanced one pass 39671
376 github level 11 row 1 with dict copy advanced one pass 39651
377 github level 11 row 1 with dict load advanced one pass 41360
378 github level 11 row 2 advanced one pass 135119
379 github level 11 row 2 with dict dms advanced one pass 39671
380 github level 11 row 2 with dict dds advanced one pass 39671
381 github level 11 row 2 with dict copy advanced one pass 39651
382 github level 11 row 2 with dict load advanced one pass 41360
383 github level 12 row 1 advanced one pass 134180
384 github level 12 row 1 with dict dms advanced one pass 39677
385 github level 12 row 1 with dict dds advanced one pass 39677
391 github level 12 row 2 with dict copy advanced one pass 39677
392 github level 12 row 2 with dict load advanced one pass 41166
393 github level 13 advanced one pass 134064
394 github level 13 with dict advanced one pass 39743 39900
395 github level 13 with dict dms advanced one pass 39743 39900
396 github level 13 with dict dds advanced one pass 39743 39900
397 github level 13 with dict copy advanced one pass 39948
398 github level 13 with dict load advanced one pass 42626
399 github level 16 advanced one pass 134064
408 github level 19 with dict dds advanced one pass 37576
409 github level 19 with dict copy advanced one pass 37567
410 github level 19 with dict load advanced one pass 39613
411 github no source size advanced one pass 136335 136332
412 github no source size with dict advanced one pass 41148
413 github long distance mode advanced one pass 136335 136332
414 github multithreaded advanced one pass 136335 136332
415 github multithreaded long distance mode advanced one pass 136335 136332
416 github small window log advanced one pass 136335 136332
417 github small hash log advanced one pass 135590
418 github small chain log advanced one pass 136341
419 github explicit params advanced one pass 137727
420 github uncompressed literals advanced one pass 165915 165911
421 github uncompressed literals optimal advanced one pass 157227
422 github huffman literals advanced one pass 142465 142365
423 github multithreaded with advanced params advanced one pass 165915 165911
424 github.tar level -5 advanced one pass 46856 52110
425 github.tar level -5 with dict advanced one pass 44571 46498
426 github.tar level -3 advanced one pass 43754 45678
427 github.tar level -3 with dict advanced one pass 41447 42177
428 github.tar level -1 advanced one pass 42490 42560
429 github.tar level -1 with dict advanced one pass 41131 41136
430 github.tar level 0 advanced one pass 38441 38831
431 github.tar level 0 with dict advanced one pass 37995
432 github.tar level 0 with dict dms advanced one pass 38003
433 github.tar level 0 with dict dds advanced one pass 38003
434 github.tar level 0 with dict copy advanced one pass 37995
435 github.tar level 0 with dict load advanced one pass 37956
436 github.tar level 1 advanced one pass 39265 39200
437 github.tar level 1 with dict advanced one pass 38280 38284
438 github.tar level 1 with dict dms advanced one pass 38290 38294
439 github.tar level 1 with dict dds advanced one pass 38290 38294
440 github.tar level 1 with dict copy advanced one pass 38280 38284
441 github.tar level 1 with dict load advanced one pass 38729 38724
442 github.tar level 3 advanced one pass 38441 38831
443 github.tar level 3 with dict advanced one pass 37995
444 github.tar level 3 with dict dms advanced one pass 38003
445 github.tar level 3 with dict dds advanced one pass 38003
446 github.tar level 3 with dict copy advanced one pass 37995
447 github.tar level 3 with dict load advanced one pass 37956
448 github.tar level 4 advanced one pass 38467 38893
449 github.tar level 4 with dict advanced one pass 37948
450 github.tar level 4 with dict dms advanced one pass 37954
451 github.tar level 4 with dict dds advanced one pass 37954
452 github.tar level 4 with dict copy advanced one pass 37948
453 github.tar level 4 with dict load advanced one pass 37927
454 github.tar level 5 row 1 advanced one pass 39788 39651
455 github.tar level 5 row 1 with dict dms advanced one pass 39365 39059
456 github.tar level 5 row 1 with dict dds advanced one pass 39233 39067
457 github.tar level 5 row 1 with dict copy advanced one pass 39715 39082
458 github.tar level 5 row 1 with dict load advanced one pass 39209 38999
459 github.tar level 5 row 2 advanced one pass 39693 39701
460 github.tar level 5 row 2 with dict dms advanced one pass 39024 39365
461 github.tar level 5 row 2 with dict dds advanced one pass 39028 39233
462 github.tar level 5 row 2 with dict copy advanced one pass 39040 39715
463 github.tar level 5 row 2 with dict load advanced one pass 39037 39158
464 github.tar level 5 advanced one pass 39693 39651
465 github.tar level 5 with dict advanced one pass 39040 39082
466 github.tar level 5 with dict dms advanced one pass 39024 39059
467 github.tar level 5 with dict dds advanced one pass 39028 39067
468 github.tar level 5 with dict copy advanced one pass 39040 39082
469 github.tar level 5 with dict load advanced one pass 39037 38999
470 github.tar level 6 advanced one pass 39621 39282
471 github.tar level 6 with dict advanced one pass 38622 38656
472 github.tar level 6 with dict dms advanced one pass 38608 38636
473 github.tar level 6 with dict dds advanced one pass 38610 38634
474 github.tar level 6 with dict copy advanced one pass 38622 38656
475 github.tar level 6 with dict load advanced one pass 38962 38648
476 github.tar level 7 row 1 advanced one pass 39206 38110
477 github.tar level 7 row 1 with dict dms advanced one pass 37954 37858
478 github.tar level 7 row 1 with dict dds advanced one pass 37954 37882
479 github.tar level 7 row 1 with dict copy advanced one pass 38071 37865
480 github.tar level 7 row 1 with dict load advanced one pass 38584 37436
481 github.tar level 7 row 2 advanced one pass 39213 38077
482 github.tar level 7 row 2 with dict dms advanced one pass 37848 38012
483 github.tar level 7 row 2 with dict dds advanced one pass 37867 38014
484 github.tar level 7 row 2 with dict copy advanced one pass 37848 38101
485 github.tar level 7 row 2 with dict load advanced one pass 38582 37402
486 github.tar level 7 advanced one pass 39213 38110
487 github.tar level 7 with dict advanced one pass 37848 37865
488 github.tar level 7 with dict dms advanced one pass 37848 37858
489 github.tar level 7 with dict dds advanced one pass 37867 37882
490 github.tar level 7 with dict copy advanced one pass 37848 37865
491 github.tar level 7 with dict load advanced one pass 38582 37436
492 github.tar level 9 advanced one pass 36758 36760
493 github.tar level 9 with dict advanced one pass 36457 36484
494 github.tar level 9 with dict dms advanced one pass 36549 36567
495 github.tar level 9 with dict dds advanced one pass 36637 36628
496 github.tar level 9 with dict copy advanced one pass 36457 36484
497 github.tar level 9 with dict load advanced one pass 36350 36401
498 github.tar level 12 row 1 level 11 row 1 advanced one pass 36435 36081
499 github.tar level 11 row 1 with dict dms advanced one pass 36963
500 github.tar level 11 row 1 with dict dds advanced one pass 36963
501 github.tar level 11 row 1 with dict copy advanced one pass 36557
502 github.tar level 11 row 1 with dict load advanced one pass 36434
503 github.tar level 11 row 2 advanced one pass 36110
504 github.tar level 11 row 2 with dict dms advanced one pass 36963
505 github.tar level 11 row 2 with dict dds advanced one pass 36963
506 github.tar level 11 row 2 with dict copy advanced one pass 36557
507 github.tar level 11 row 2 with dict load advanced one pass 36459
508 github.tar level 12 row 1 advanced one pass 36081
509 github.tar level 12 row 1 with dict dms advanced one pass 36986
510 github.tar level 12 row 1 with dict dds advanced one pass 36986
511 github.tar level 12 row 1 with dict copy advanced one pass 36609
512 github.tar level 12 row 1 with dict load advanced one pass 36419 36434
513 github.tar level 12 row 2 advanced one pass 36435 36110
514 github.tar level 12 row 2 with dict dms advanced one pass 36986
515 github.tar level 12 row 2 with dict dds advanced one pass 36986
516 github.tar level 12 row 2 with dict copy advanced one pass 36609
517 github.tar level 12 row 2 with dict load advanced one pass 36424 36459
518 github.tar level 13 advanced one pass 35621 35501
519 github.tar level 13 with dict advanced one pass 38726 37130
520 github.tar level 13 with dict dms advanced one pass 38903 37220
521 github.tar level 13 with dict dds advanced one pass 38903 37220
522 github.tar level 13 with dict copy advanced one pass 38726 37130
523 github.tar level 13 with dict load advanced one pass 36372 36010
524 github.tar level 16 advanced one pass 40255 40471
525 github.tar level 16 with dict advanced one pass 33639 33378
526 github.tar level 16 with dict dms advanced one pass 33544 33213
527 github.tar level 16 with dict dds advanced one pass 33544 33213
528 github.tar level 16 with dict copy advanced one pass 33639 33378
529 github.tar level 16 with dict load advanced one pass 39353 39081
530 github.tar level 19 advanced one pass 32837 32134
531 github.tar level 19 with dict advanced one pass 32895 32709
532 github.tar level 19 with dict dms advanced one pass 32672 32553
533 github.tar level 19 with dict dds advanced one pass 32672 32553
534 github.tar level 19 with dict copy advanced one pass 32895 32709
535 github.tar level 19 with dict load advanced one pass 32676 32474
536 github.tar no source size advanced one pass 38441 38831
537 github.tar no source size with dict advanced one pass 37995
538 github.tar long distance mode advanced one pass 39757 40252
539 github.tar multithreaded advanced one pass 38441 38831
540 github.tar multithreaded long distance mode advanced one pass 39726 40232
541 github.tar small window log advanced one pass 198540
542 github.tar small hash log advanced one pass 129870
543 github.tar small chain log advanced one pass 41669
544 github.tar explicit params advanced one pass 41227 41385
545 github.tar uncompressed literals advanced one pass 41122 41525
546 github.tar uncompressed literals optimal advanced one pass 35388 35397
547 github.tar huffman literals advanced one pass 38777 38853
548 github.tar multithreaded with advanced params advanced one pass 41122 41525
549 silesia level -5 advanced one pass small out 6737607 6852424
550 silesia level -3 advanced one pass small out 6444677 6503413
551 silesia level -1 advanced one pass small out 6178460 6172178
552 silesia level 0 advanced one pass small out 4849552 4842075
553 silesia level 1 advanced one pass small out 5313204 5306426
554 silesia level 3 advanced one pass small out 4849552 4842075
555 silesia level 4 advanced one pass small out 4786970 4779186
556 silesia level 5 row 1 advanced one pass small out 4710236 4666323
557 silesia level 5 row 2 advanced one pass small out 4707794 4670136
558 silesia level 5 advanced one pass small out 4707794 4666323
559 silesia level 6 advanced one pass small out 4666383 4603066
560 silesia level 7 row 1 advanced one pass small out 4596296 4566984
561 silesia level 7 row 2 advanced one pass small out 4603381 4564868
562 silesia level 7 advanced one pass small out 4603381 4566984
563 silesia level 9 advanced one pass small out 4546001 4543018
564 silesia level 12 row 1 level 11 row 1 advanced one pass small out 4519288 4505046
565 silesia level 12 row 2 level 11 row 2 advanced one pass small out 4521397 4503116
566 silesia level 13 level 12 row 1 advanced one pass small out 4482135 4505046
567 silesia level 16 level 12 row 2 advanced one pass small out 4360251 4503116
568 silesia level 19 level 13 advanced one pass small out 4283237 4493990
569 silesia no source size level 16 advanced one pass small out 4849552 4359864
570 silesia long distance mode level 19 advanced one pass small out 4840738 4296880
571 silesia multithreaded no source size advanced one pass small out 4849552 4842075
572 silesia multithreaded long distance mode long distance mode advanced one pass small out 4840758 4833710
573 silesia small window log multithreaded advanced one pass small out 7095919 4842075
574 silesia multithreaded long distance mode advanced one pass small out 4833737
575 silesia small window log advanced one pass small out 7095000
576 silesia small hash log advanced one pass small out 6526141
577 silesia small chain log advanced one pass small out 4912197
578 silesia explicit params advanced one pass small out 4795856 4795432
579 silesia uncompressed literals advanced one pass small out 5127982 5120566
580 silesia uncompressed literals optimal advanced one pass small out 4317896 4319518
581 silesia huffman literals advanced one pass small out 5326268 5321346
582 silesia multithreaded with advanced params advanced one pass small out 5127982 5120566
583 silesia.tar level -5 advanced one pass small out 6738593 6853608
584 silesia.tar level -3 advanced one pass small out 6446372 6505969
585 silesia.tar level -1 advanced one pass small out 6186042 6179026
586 silesia.tar level 0 advanced one pass small out 4861425 4854086
587 silesia.tar level 1 advanced one pass small out 5334885 5327373
588 silesia.tar level 3 advanced one pass small out 4861425 4854086
589 silesia.tar level 4 advanced one pass small out 4799630 4791503
590 silesia.tar level 5 row 1 advanced one pass small out 4722324 4677740
591 silesia.tar level 5 row 2 advanced one pass small out 4719256 4682161
592 silesia.tar level 5 advanced one pass small out 4719256 4677740
593 silesia.tar level 6 advanced one pass small out 4677721 4613242
594 silesia.tar level 7 row 1 advanced one pass small out 4606715 4576661
595 silesia.tar level 7 row 2 advanced one pass small out 4613541 4575393
596 silesia.tar level 7 advanced one pass small out 4613541 4576661
597 silesia.tar level 9 advanced one pass small out 4555426 4552899
598 silesia.tar level 12 row 1 level 11 row 1 advanced one pass small out 4529459 4514432
599 silesia.tar level 12 row 2 level 11 row 2 advanced one pass small out 4530256 4513604
600 silesia.tar level 13 level 12 row 1 advanced one pass small out 4491764 4514049
601 silesia.tar level 16 level 12 row 2 advanced one pass small out 4356827 4513797
602 silesia.tar level 19 level 13 advanced one pass small out 4264487 4502956
603 silesia.tar no source size level 16 advanced one pass small out 4861425 4360527
604 silesia.tar long distance mode level 19 advanced one pass small out 4847754 4267266
605 silesia.tar multithreaded no source size advanced one pass small out 4861508 4854086
606 silesia.tar multithreaded long distance mode long distance mode advanced one pass small out 4853222 4840452
607 silesia.tar small window log multithreaded advanced one pass small out 7101530 4854160
608 silesia.tar small hash log multithreaded long distance mode advanced one pass small out 6529232 4845741
609 silesia.tar small window log advanced one pass small out 7100655
610 silesia.tar small hash log advanced one pass small out 6529231
611 silesia.tar small chain log advanced one pass small out 4917041
612 silesia.tar explicit params advanced one pass small out 4807380 4806855
613 silesia.tar uncompressed literals advanced one pass small out 5129458 5122473
614 silesia.tar uncompressed literals optimal advanced one pass small out 4307453 4310141
615 silesia.tar huffman literals advanced one pass small out 5347335 5341685
616 silesia.tar multithreaded with advanced params advanced one pass small out 5129555 5122567
617 github level -5 advanced one pass small out 205285 204411
618 github level -5 with dict advanced one pass small out 46718
619 github level -3 advanced one pass small out 190643 193253
620 github level -3 with dict advanced one pass small out 45395
621 github level -1 advanced one pass small out 175568 175468
622 github level -1 with dict advanced one pass small out 43170
623 github level 0 advanced one pass small out 136335 136332
624 github level 0 with dict advanced one pass small out 41148
625 github level 0 with dict dms advanced one pass small out 41148
626 github level 0 with dict dds advanced one pass small out 41148
627 github level 0 with dict copy advanced one pass small out 41124
628 github level 0 with dict load advanced one pass small out 42252
629 github level 1 advanced one pass small out 142465 142365
630 github level 1 with dict advanced one pass small out 41682
631 github level 1 with dict dms advanced one pass small out 41682
632 github level 1 with dict dds advanced one pass small out 41682
633 github level 1 with dict copy advanced one pass small out 41674
634 github level 1 with dict load advanced one pass small out 43755
635 github level 3 advanced one pass small out 136335 136332
636 github level 3 with dict advanced one pass small out 41148
637 github level 3 with dict dms advanced one pass small out 41148
638 github level 3 with dict dds advanced one pass small out 41148
644 github level 4 with dict dds advanced one pass small out 41251
645 github level 4 with dict copy advanced one pass small out 41216
646 github level 4 with dict load advanced one pass small out 41159
647 github level 5 row 1 advanced one pass small out 135121 134584
648 github level 5 row 1 with dict dms advanced one pass small out 38938 38758
649 github level 5 row 1 with dict dds advanced one pass small out 38732 38728
650 github level 5 row 1 with dict copy advanced one pass small out 38934 38759
651 github level 5 row 1 with dict load advanced one pass small out 40725 41518
652 github level 5 row 2 advanced one pass small out 134584 135121
653 github level 5 row 2 with dict dms advanced one pass small out 38758 38938
654 github level 5 row 2 with dict dds advanced one pass small out 38728 38732
655 github level 5 row 2 with dict copy advanced one pass small out 38759 38934
656 github level 5 row 2 with dict load advanced one pass small out 41518 40725
657 github level 5 advanced one pass small out 135121
658 github level 5 with dict advanced one pass small out 38758
659 github level 5 with dict dms advanced one pass small out 38758
663 github level 6 advanced one pass small out 135122
664 github level 6 with dict advanced one pass small out 38671
665 github level 6 with dict dms advanced one pass small out 38671
666 github level 6 with dict dds advanced one pass small out 38630 38636
667 github level 6 with dict copy advanced one pass small out 38669
668 github level 6 with dict load advanced one pass small out 40695
669 github level 7 row 1 advanced one pass small out 135122 134584
670 github level 7 row 1 with dict dms advanced one pass small out 38771 38758
671 github level 7 row 1 with dict dds advanced one pass small out 38771 38745
672 github level 7 row 1 with dict copy advanced one pass small out 38745 38755
673 github level 7 row 1 with dict load advanced one pass small out 40695 43154
674 github level 7 row 2 advanced one pass small out 134584 135122
675 github level 7 row 2 with dict dms advanced one pass small out 38758 38860
676 github level 7 row 2 with dict dds advanced one pass small out 38747 38766
677 github level 7 row 2 with dict copy advanced one pass small out 38755 38834
678 github level 7 row 2 with dict load advanced one pass small out 41030 40695
679 github level 7 advanced one pass small out 135122
680 github level 7 with dict advanced one pass small out 38758
681 github level 7 with dict dms advanced one pass small out 38758
682 github level 7 with dict dds advanced one pass small out 38747 38745
683 github level 7 with dict copy advanced one pass small out 38755
684 github level 7 with dict load advanced one pass small out 40695
685 github level 9 advanced one pass small out 135122
686 github level 9 with dict advanced one pass small out 39437
687 github level 9 with dict dms advanced one pass small out 39437
688 github level 9 with dict dds advanced one pass small out 39338 39393
689 github level 9 with dict copy advanced one pass small out 39398
690 github level 9 with dict load advanced one pass small out 41710
691 github level 11 row 1 advanced one pass small out 135119
692 github level 11 row 1 with dict dms advanced one pass small out 39671
693 github level 11 row 1 with dict dds advanced one pass small out 39671
694 github level 11 row 1 with dict copy advanced one pass small out 39651
695 github level 11 row 1 with dict load advanced one pass small out 41360
696 github level 11 row 2 advanced one pass small out 135119
697 github level 11 row 2 with dict dms advanced one pass small out 39671
698 github level 11 row 2 with dict dds advanced one pass small out 39671
699 github level 11 row 2 with dict copy advanced one pass small out 39651
700 github level 11 row 2 with dict load advanced one pass small out 41360
701 github level 12 row 1 advanced one pass small out 134180
702 github level 12 row 1 with dict dms advanced one pass small out 39677
703 github level 12 row 1 with dict dds advanced one pass small out 39677
709 github level 12 row 2 with dict copy advanced one pass small out 39677
710 github level 12 row 2 with dict load advanced one pass small out 41166
711 github level 13 advanced one pass small out 134064
712 github level 13 with dict advanced one pass small out 39743 39900
713 github level 13 with dict dms advanced one pass small out 39743 39900
714 github level 13 with dict dds advanced one pass small out 39743 39900
715 github level 13 with dict copy advanced one pass small out 39948
716 github level 13 with dict load advanced one pass small out 42626
717 github level 16 advanced one pass small out 134064
726 github level 19 with dict dds advanced one pass small out 37576
727 github level 19 with dict copy advanced one pass small out 37567
728 github level 19 with dict load advanced one pass small out 39613
729 github no source size advanced one pass small out 136335 136332
730 github no source size with dict advanced one pass small out 41148
731 github long distance mode advanced one pass small out 136335 136332
732 github multithreaded advanced one pass small out 136335 136332
733 github multithreaded long distance mode advanced one pass small out 136335 136332
734 github small window log advanced one pass small out 136335 136332
735 github small hash log advanced one pass small out 135590
736 github small chain log advanced one pass small out 136341
737 github explicit params advanced one pass small out 137727
738 github uncompressed literals advanced one pass small out 165915 165911
739 github uncompressed literals optimal advanced one pass small out 157227
740 github huffman literals advanced one pass small out 142465 142365
741 github multithreaded with advanced params advanced one pass small out 165915 165911
742 github.tar level -5 advanced one pass small out 46856 52110
743 github.tar level -5 with dict advanced one pass small out 44571 46498
744 github.tar level -3 advanced one pass small out 43754 45678
745 github.tar level -3 with dict advanced one pass small out 41447 42177
746 github.tar level -1 advanced one pass small out 42490 42560
747 github.tar level -1 with dict advanced one pass small out 41131 41136
748 github.tar level 0 advanced one pass small out 38441 38831
749 github.tar level 0 with dict advanced one pass small out 37995
750 github.tar level 0 with dict dms advanced one pass small out 38003
751 github.tar level 0 with dict dds advanced one pass small out 38003
752 github.tar level 0 with dict copy advanced one pass small out 37995
753 github.tar level 0 with dict load advanced one pass small out 37956
754 github.tar level 1 advanced one pass small out 39265 39200
755 github.tar level 1 with dict advanced one pass small out 38280 38284
756 github.tar level 1 with dict dms advanced one pass small out 38290 38294
757 github.tar level 1 with dict dds advanced one pass small out 38290 38294
758 github.tar level 1 with dict copy advanced one pass small out 38280 38284
759 github.tar level 1 with dict load advanced one pass small out 38729 38724
760 github.tar level 3 advanced one pass small out 38441 38831
761 github.tar level 3 with dict advanced one pass small out 37995
762 github.tar level 3 with dict dms advanced one pass small out 38003
763 github.tar level 3 with dict dds advanced one pass small out 38003
764 github.tar level 3 with dict copy advanced one pass small out 37995
765 github.tar level 3 with dict load advanced one pass small out 37956
766 github.tar level 4 advanced one pass small out 38467 38893
767 github.tar level 4 with dict advanced one pass small out 37948
768 github.tar level 4 with dict dms advanced one pass small out 37954
769 github.tar level 4 with dict dds advanced one pass small out 37954
770 github.tar level 4 with dict copy advanced one pass small out 37948
771 github.tar level 4 with dict load advanced one pass small out 37927
772 github.tar level 5 row 1 advanced one pass small out 39788 39651
773 github.tar level 5 row 1 with dict dms advanced one pass small out 39365 39059
774 github.tar level 5 row 1 with dict dds advanced one pass small out 39233 39067
775 github.tar level 5 row 1 with dict copy advanced one pass small out 39715 39082
776 github.tar level 5 row 1 with dict load advanced one pass small out 39209 38999
777 github.tar level 5 row 2 advanced one pass small out 39693 39701
778 github.tar level 5 row 2 with dict dms advanced one pass small out 39024 39365
779 github.tar level 5 row 2 with dict dds advanced one pass small out 39028 39233
780 github.tar level 5 row 2 with dict copy advanced one pass small out 39040 39715
781 github.tar level 5 row 2 with dict load advanced one pass small out 39037 39158
782 github.tar level 5 advanced one pass small out 39693 39651
783 github.tar level 5 with dict advanced one pass small out 39040 39082
784 github.tar level 5 with dict dms advanced one pass small out 39024 39059
785 github.tar level 5 with dict dds advanced one pass small out 39028 39067
786 github.tar level 5 with dict copy advanced one pass small out 39040 39082
787 github.tar level 5 with dict load advanced one pass small out 39037 38999
788 github.tar level 6 advanced one pass small out 39621 39282
789 github.tar level 6 with dict advanced one pass small out 38622 38656
790 github.tar level 6 with dict dms advanced one pass small out 38608 38636
791 github.tar level 6 with dict dds advanced one pass small out 38610 38634
792 github.tar level 6 with dict copy advanced one pass small out 38622 38656
793 github.tar level 6 with dict load advanced one pass small out 38962 38648
794 github.tar level 7 row 1 advanced one pass small out 39206 38110
795 github.tar level 7 row 1 with dict dms advanced one pass small out 37954 37858
796 github.tar level 7 row 1 with dict dds advanced one pass small out 37954 37882
797 github.tar level 7 row 1 with dict copy advanced one pass small out 38071 37865
798 github.tar level 7 row 1 with dict load advanced one pass small out 38584 37436
799 github.tar level 7 row 2 advanced one pass small out 39213 38077
800 github.tar level 7 row 2 with dict dms advanced one pass small out 37848 38012
801 github.tar level 7 row 2 with dict dds advanced one pass small out 37867 38014
802 github.tar level 7 row 2 with dict copy advanced one pass small out 37848 38101
803 github.tar level 7 row 2 with dict load advanced one pass small out 38582 37402
804 github.tar level 7 advanced one pass small out 39213 38110
805 github.tar level 7 with dict advanced one pass small out 37848 37865
806 github.tar level 7 with dict dms advanced one pass small out 37848 37858
807 github.tar level 7 with dict dds advanced one pass small out 37867 37882
808 github.tar level 7 with dict copy advanced one pass small out 37848 37865
809 github.tar level 7 with dict load advanced one pass small out 38582 37436
810 github.tar level 9 advanced one pass small out 36758 36760
811 github.tar level 9 with dict advanced one pass small out 36457 36484
812 github.tar level 9 with dict dms advanced one pass small out 36549 36567
813 github.tar level 9 with dict dds advanced one pass small out 36637 36628
814 github.tar level 9 with dict copy advanced one pass small out 36457 36484
815 github.tar level 9 with dict load advanced one pass small out 36350 36401
816 github.tar level 12 row 1 level 11 row 1 advanced one pass small out 36435 36081
817 github.tar level 11 row 1 with dict dms advanced one pass small out 36963
818 github.tar level 11 row 1 with dict dds advanced one pass small out 36963
819 github.tar level 11 row 1 with dict copy advanced one pass small out 36557
820 github.tar level 11 row 1 with dict load advanced one pass small out 36434
821 github.tar level 11 row 2 advanced one pass small out 36110
822 github.tar level 11 row 2 with dict dms advanced one pass small out 36963
823 github.tar level 11 row 2 with dict dds advanced one pass small out 36963
824 github.tar level 11 row 2 with dict copy advanced one pass small out 36557
825 github.tar level 11 row 2 with dict load advanced one pass small out 36459
826 github.tar level 12 row 1 advanced one pass small out 36081
827 github.tar level 12 row 1 with dict dms advanced one pass small out 36986
828 github.tar level 12 row 1 with dict dds advanced one pass small out 36986
829 github.tar level 12 row 1 with dict copy advanced one pass small out 36609
830 github.tar level 12 row 1 with dict load advanced one pass small out 36419 36434
831 github.tar level 12 row 2 advanced one pass small out 36435 36110
832 github.tar level 12 row 2 with dict dms advanced one pass small out 36986
833 github.tar level 12 row 2 with dict dds advanced one pass small out 36986
834 github.tar level 12 row 2 with dict copy advanced one pass small out 36609
835 github.tar level 12 row 2 with dict load advanced one pass small out 36424 36459
836 github.tar level 13 advanced one pass small out 35621 35501
837 github.tar level 13 with dict advanced one pass small out 38726 37130
838 github.tar level 13 with dict dms advanced one pass small out 38903 37220
839 github.tar level 13 with dict dds advanced one pass small out 38903 37220
840 github.tar level 13 with dict copy advanced one pass small out 38726 37130
841 github.tar level 13 with dict load advanced one pass small out 36372 36010
842 github.tar level 16 advanced one pass small out 40255 40471
843 github.tar level 16 with dict advanced one pass small out 33639 33378
844 github.tar level 16 with dict dms advanced one pass small out 33544 33213
845 github.tar level 16 with dict dds advanced one pass small out 33544 33213
846 github.tar level 16 with dict copy advanced one pass small out 33639 33378
847 github.tar level 16 with dict load advanced one pass small out 39353 39081
848 github.tar level 19 advanced one pass small out 32837 32134
849 github.tar level 19 with dict advanced one pass small out 32895 32709
850 github.tar level 19 with dict dms advanced one pass small out 32672 32553
851 github.tar level 19 with dict dds advanced one pass small out 32672 32553
852 github.tar level 19 with dict copy advanced one pass small out 32895 32709
853 github.tar level 19 with dict load advanced one pass small out 32676 32474
854 github.tar no source size advanced one pass small out 38441 38831
855 github.tar no source size with dict advanced one pass small out 37995
856 github.tar long distance mode advanced one pass small out 39757 40252
857 github.tar multithreaded advanced one pass small out 38441 38831
858 github.tar multithreaded long distance mode advanced one pass small out 39726 40232
859 github.tar small window log advanced one pass small out 198540
860 github.tar small hash log advanced one pass small out 129870
861 github.tar small chain log advanced one pass small out 41669
862 github.tar explicit params advanced one pass small out 41227 41385
863 github.tar uncompressed literals advanced one pass small out 41122 41525
864 github.tar uncompressed literals optimal advanced one pass small out 35388 35397
865 github.tar huffman literals advanced one pass small out 38777 38853
866 github.tar multithreaded with advanced params advanced one pass small out 41122 41525
867 silesia level -5 advanced streaming 6882505 6963781
868 silesia level -3 advanced streaming 6568376 6610376
869 silesia level -1 advanced streaming 6183403 6179294
870 silesia level 0 advanced streaming 4849552 4842075
871 silesia level 1 advanced streaming 5314162 5310178
872 silesia level 3 advanced streaming 4849552 4842075
873 silesia level 4 advanced streaming 4786970 4779186
874 silesia level 5 row 1 advanced streaming 4710236 4666323
875 silesia level 5 row 2 advanced streaming 4707794 4670136
876 silesia level 5 advanced streaming 4707794 4666323
877 silesia level 6 advanced streaming 4666383 4603066
878 silesia level 7 row 1 advanced streaming 4596296 4566984
879 silesia level 7 row 2 advanced streaming 4603381 4564868
880 silesia level 7 advanced streaming 4603381 4566984
881 silesia level 9 advanced streaming 4546001 4543018
882 silesia level 12 row 1 level 11 row 1 advanced streaming 4519288 4505046
883 silesia level 12 row 2 level 11 row 2 advanced streaming 4521397 4503116
884 silesia level 13 level 12 row 1 advanced streaming 4482135 4505046
885 silesia level 16 level 12 row 2 advanced streaming 4360251 4503116
886 silesia level 19 level 13 advanced streaming 4283237 4493990
887 silesia no source size level 16 advanced streaming 4849516 4359864
888 silesia long distance mode level 19 advanced streaming 4840738 4296880
889 silesia multithreaded no source size advanced streaming 4849552 4842039
890 silesia multithreaded long distance mode long distance mode advanced streaming 4840758 4833710
891 silesia small window log multithreaded advanced streaming 7112062 4842075
892 silesia multithreaded long distance mode advanced streaming 4833737
893 silesia small window log advanced streaming 7111103
894 silesia small hash log advanced streaming 6526141
895 silesia small chain log advanced streaming 4912197
896 silesia explicit params advanced streaming 4795887 4795452
897 silesia uncompressed literals advanced streaming 5127982 5120566
898 silesia uncompressed literals optimal advanced streaming 4317896 4319518
899 silesia huffman literals advanced streaming 5331168 5327881
900 silesia multithreaded with advanced params advanced streaming 5127982 5120566
901 silesia.tar level -5 advanced streaming 6982759 7043687
902 silesia.tar level -3 advanced streaming 6641283 6671317
903 silesia.tar level -1 advanced streaming 6190795 6187457
904 silesia.tar level 0 advanced streaming 4861427 4859271
905 silesia.tar level 1 advanced streaming 5336939 5333896
906 silesia.tar level 3 advanced streaming 4861427 4859271
907 silesia.tar level 4 advanced streaming 4799630 4797470
908 silesia.tar level 5 row 1 advanced streaming 4722329 4677748
909 silesia.tar level 5 row 2 advanced streaming 4719261 4682169
910 silesia.tar level 5 advanced streaming 4719261 4677748
911 silesia.tar level 6 advanced streaming 4677729 4613246
912 silesia.tar level 7 row 1 advanced streaming 4606715 4576664
913 silesia.tar level 7 row 2 advanced streaming 4613544 4575394
914 silesia.tar level 7 advanced streaming 4613544 4576664
915 silesia.tar level 9 advanced streaming 4555432 4552900
916 silesia.tar level 12 row 1 level 11 row 1 advanced streaming 4529459 4514433
917 silesia.tar level 12 row 2 level 11 row 2 advanced streaming 4530258 4513604
918 silesia.tar level 13 level 12 row 1 advanced streaming 4491765 4514049
919 silesia.tar level 16 level 12 row 2 advanced streaming 4356834 4513797
920 silesia.tar level 19 level 13 advanced streaming 4264392 4502956
921 silesia.tar no source size level 16 advanced streaming 4861423 4360527
922 silesia.tar long distance mode level 19 advanced streaming 4847754 4267266
923 silesia.tar multithreaded no source size advanced streaming 4861508 4859267
924 silesia.tar multithreaded long distance mode long distance mode advanced streaming 4853222 4840452
925 silesia.tar small window log multithreaded advanced streaming 7118769 4854160
926 silesia.tar small hash log multithreaded long distance mode advanced streaming 6529235 4845741
927 silesia.tar small window log advanced streaming 7117559
928 silesia.tar small hash log advanced streaming 6529234
929 silesia.tar small chain log advanced streaming 4917021
930 silesia.tar explicit params advanced streaming 4807401 4806873
931 silesia.tar uncompressed literals advanced streaming 5129461 5127423
932 silesia.tar uncompressed literals optimal advanced streaming 4307400 4310141
933 silesia.tar huffman literals advanced streaming 5352360 5349624
934 silesia.tar multithreaded with advanced params advanced streaming 5129555 5122567
935 github level -5 advanced streaming 205285 204411
936 github level -5 with dict advanced streaming 46718
937 github level -3 advanced streaming 190643 193253
938 github level -3 with dict advanced streaming 45395
939 github level -1 advanced streaming 175568 175468
940 github level -1 with dict advanced streaming 43170
941 github level 0 advanced streaming 136335 136332
942 github level 0 with dict advanced streaming 41148
943 github level 0 with dict dms advanced streaming 41148
944 github level 0 with dict dds advanced streaming 41148
945 github level 0 with dict copy advanced streaming 41124
946 github level 0 with dict load advanced streaming 42252
947 github level 1 advanced streaming 142465 142365
948 github level 1 with dict advanced streaming 41682
949 github level 1 with dict dms advanced streaming 41682
950 github level 1 with dict dds advanced streaming 41682
951 github level 1 with dict copy advanced streaming 41674
952 github level 1 with dict load advanced streaming 43755
953 github level 3 advanced streaming 136335 136332
954 github level 3 with dict advanced streaming 41148
955 github level 3 with dict dms advanced streaming 41148
956 github level 3 with dict dds advanced streaming 41148
962 github level 4 with dict dds advanced streaming 41251
963 github level 4 with dict copy advanced streaming 41216
964 github level 4 with dict load advanced streaming 41159
965 github level 5 row 1 advanced streaming 135121 134584
966 github level 5 row 1 with dict dms advanced streaming 38938 38758
967 github level 5 row 1 with dict dds advanced streaming 38732 38728
968 github level 5 row 1 with dict copy advanced streaming 38934 38759
969 github level 5 row 1 with dict load advanced streaming 40725 41518
970 github level 5 row 2 advanced streaming 134584 135121
971 github level 5 row 2 with dict dms advanced streaming 38758 38938
972 github level 5 row 2 with dict dds advanced streaming 38728 38732
973 github level 5 row 2 with dict copy advanced streaming 38759 38934
974 github level 5 row 2 with dict load advanced streaming 41518 40725
975 github level 5 advanced streaming 135121
976 github level 5 with dict advanced streaming 38758
977 github level 5 with dict dms advanced streaming 38758
981 github level 6 advanced streaming 135122
982 github level 6 with dict advanced streaming 38671
983 github level 6 with dict dms advanced streaming 38671
984 github level 6 with dict dds advanced streaming 38630 38636
985 github level 6 with dict copy advanced streaming 38669
986 github level 6 with dict load advanced streaming 40695
987 github level 7 row 1 advanced streaming 135122 134584
988 github level 7 row 1 with dict dms advanced streaming 38771 38758
989 github level 7 row 1 with dict dds advanced streaming 38771 38745
990 github level 7 row 1 with dict copy advanced streaming 38745 38755
991 github level 7 row 1 with dict load advanced streaming 40695 43154
992 github level 7 row 2 advanced streaming 134584 135122
993 github level 7 row 2 with dict dms advanced streaming 38758 38860
994 github level 7 row 2 with dict dds advanced streaming 38747 38766
995 github level 7 row 2 with dict copy advanced streaming 38755 38834
996 github level 7 row 2 with dict load advanced streaming 41030 40695
997 github level 7 advanced streaming 135122
998 github level 7 with dict advanced streaming 38758
999 github level 7 with dict dms advanced streaming 38758
1000 github level 7 with dict dds advanced streaming 38747 38745
1001 github level 7 with dict copy advanced streaming 38755
1002 github level 7 with dict load advanced streaming 40695
1003 github level 9 advanced streaming 135122
1004 github level 9 with dict advanced streaming 39437
1005 github level 9 with dict dms advanced streaming 39437
1006 github level 9 with dict dds advanced streaming 39338 39393
1007 github level 9 with dict copy advanced streaming 39398
1008 github level 9 with dict load advanced streaming 41710
1009 github level 11 row 1 advanced streaming 135119
1010 github level 11 row 1 with dict dms advanced streaming 39671
1011 github level 11 row 1 with dict dds advanced streaming 39671
1012 github level 11 row 1 with dict copy advanced streaming 39651
1013 github level 11 row 1 with dict load advanced streaming 41360
1014 github level 11 row 2 advanced streaming 135119
1015 github level 11 row 2 with dict dms advanced streaming 39671
1016 github level 11 row 2 with dict dds advanced streaming 39671
1017 github level 11 row 2 with dict copy advanced streaming 39651
1018 github level 11 row 2 with dict load advanced streaming 41360
1019 github level 12 row 1 advanced streaming 134180
1020 github level 12 row 1 with dict dms advanced streaming 39677
1021 github level 12 row 1 with dict dds advanced streaming 39677
1027 github level 12 row 2 with dict copy advanced streaming 39677
1028 github level 12 row 2 with dict load advanced streaming 41166
1029 github level 13 advanced streaming 134064
1030 github level 13 with dict advanced streaming 39743 39900
1031 github level 13 with dict dms advanced streaming 39743 39900
1032 github level 13 with dict dds advanced streaming 39743 39900
1033 github level 13 with dict copy advanced streaming 39948
1034 github level 13 with dict load advanced streaming 42626
1035 github level 16 advanced streaming 134064
1044 github level 19 with dict dds advanced streaming 37576
1045 github level 19 with dict copy advanced streaming 37567
1046 github level 19 with dict load advanced streaming 39613
1047 github no source size advanced streaming 136335 136332
1048 github no source size with dict advanced streaming 41148
1049 github long distance mode advanced streaming 136335 136332
1050 github multithreaded advanced streaming 136335 136332
1051 github multithreaded long distance mode advanced streaming 136335 136332
1052 github small window log advanced streaming 136335 136332
1053 github small hash log advanced streaming 135590
1054 github small chain log advanced streaming 136341
1055 github explicit params advanced streaming 137727
1056 github uncompressed literals advanced streaming 165915 165911
1057 github uncompressed literals optimal advanced streaming 157227
1058 github huffman literals advanced streaming 142465 142365
1059 github multithreaded with advanced params advanced streaming 165915 165911
1060 github.tar level -5 advanced streaming 46747 51420
1061 github.tar level -5 with dict advanced streaming 44440 45495
1062 github.tar level -3 advanced streaming 43537 45077
1063 github.tar level -3 with dict advanced streaming 41112 41627
1064 github.tar level -1 advanced streaming 42465 42536
1065 github.tar level -1 with dict advanced streaming 41196 41198
1066 github.tar level 0 advanced streaming 38441 38831
1067 github.tar level 0 with dict advanced streaming 37995
1068 github.tar level 0 with dict dms advanced streaming 38003
1069 github.tar level 0 with dict dds advanced streaming 38003
1070 github.tar level 0 with dict copy advanced streaming 37995
1071 github.tar level 0 with dict load advanced streaming 37956
1072 github.tar level 1 advanced streaming 39342 39270
1073 github.tar level 1 with dict advanced streaming 38293 38316
1074 github.tar level 1 with dict dms advanced streaming 38303 38326
1075 github.tar level 1 with dict dds advanced streaming 38303 38326
1076 github.tar level 1 with dict copy advanced streaming 38293 38316
1077 github.tar level 1 with dict load advanced streaming 38766 38761
1078 github.tar level 3 advanced streaming 38441 38831
1079 github.tar level 3 with dict advanced streaming 37995
1080 github.tar level 3 with dict dms advanced streaming 38003
1081 github.tar level 3 with dict dds advanced streaming 38003
1082 github.tar level 3 with dict copy advanced streaming 37995
1083 github.tar level 3 with dict load advanced streaming 37956
1084 github.tar level 4 advanced streaming 38467 38893
1085 github.tar level 4 with dict advanced streaming 37948
1086 github.tar level 4 with dict dms advanced streaming 37954
1087 github.tar level 4 with dict dds advanced streaming 37954
1088 github.tar level 4 with dict copy advanced streaming 37948
1089 github.tar level 4 with dict load advanced streaming 37927
1090 github.tar level 5 row 1 advanced streaming 39788 39651
1091 github.tar level 5 row 1 with dict dms advanced streaming 39365 39059
1092 github.tar level 5 row 1 with dict dds advanced streaming 39233 39067
1093 github.tar level 5 row 1 with dict copy advanced streaming 39715 39082
1094 github.tar level 5 row 1 with dict load advanced streaming 39209 38999
1095 github.tar level 5 row 2 advanced streaming 39693 39701
1096 github.tar level 5 row 2 with dict dms advanced streaming 39024 39365
1097 github.tar level 5 row 2 with dict dds advanced streaming 39028 39233
1098 github.tar level 5 row 2 with dict copy advanced streaming 39040 39715
1099 github.tar level 5 row 2 with dict load advanced streaming 39037 39158
1100 github.tar level 5 advanced streaming 39693 39651
1101 github.tar level 5 with dict advanced streaming 39040 39082
1102 github.tar level 5 with dict dms advanced streaming 39024 39059
1103 github.tar level 5 with dict dds advanced streaming 39028 39067
1104 github.tar level 5 with dict copy advanced streaming 39040 39082
1105 github.tar level 5 with dict load advanced streaming 39037 38999
1106 github.tar level 6 advanced streaming 39621 39282
1107 github.tar level 6 with dict advanced streaming 38622 38656
1108 github.tar level 6 with dict dms advanced streaming 38608 38636
1109 github.tar level 6 with dict dds advanced streaming 38610 38634
1110 github.tar level 6 with dict copy advanced streaming 38622 38656
1111 github.tar level 6 with dict load advanced streaming 38962 38648
1112 github.tar level 7 row 1 advanced streaming 39206 38110
1113 github.tar level 7 row 1 with dict dms advanced streaming 37954 37858
1114 github.tar level 7 row 1 with dict dds advanced streaming 37954 37882
1115 github.tar level 7 row 1 with dict copy advanced streaming 38071 37865
1116 github.tar level 7 row 1 with dict load advanced streaming 38584 37436
1117 github.tar level 7 row 2 advanced streaming 39213 38077
1118 github.tar level 7 row 2 with dict dms advanced streaming 37848 38012
1119 github.tar level 7 row 2 with dict dds advanced streaming 37867 38014
1120 github.tar level 7 row 2 with dict copy advanced streaming 37848 38101
1121 github.tar level 7 row 2 with dict load advanced streaming 38582 37402
1122 github.tar level 7 advanced streaming 39213 38110
1123 github.tar level 7 with dict advanced streaming 37848 37865
1124 github.tar level 7 with dict dms advanced streaming 37848 37858
1125 github.tar level 7 with dict dds advanced streaming 37867 37882
1126 github.tar level 7 with dict copy advanced streaming 37848 37865
1127 github.tar level 7 with dict load advanced streaming 38582 37436
1128 github.tar level 9 advanced streaming 36758 36760
1129 github.tar level 9 with dict advanced streaming 36457 36484
1130 github.tar level 9 with dict dms advanced streaming 36549 36567
1131 github.tar level 9 with dict dds advanced streaming 36637 36628
1132 github.tar level 9 with dict copy advanced streaming 36457 36484
1133 github.tar level 9 with dict load advanced streaming 36350 36401
1134 github.tar level 12 row 1 level 11 row 1 advanced streaming 36435 36081
1135 github.tar level 11 row 1 with dict dms advanced streaming 36963
1136 github.tar level 11 row 1 with dict dds advanced streaming 36963
1137 github.tar level 11 row 1 with dict copy advanced streaming 36557
1138 github.tar level 11 row 1 with dict load advanced streaming 36434
1139 github.tar level 11 row 2 advanced streaming 36110
1140 github.tar level 11 row 2 with dict dms advanced streaming 36963
1141 github.tar level 11 row 2 with dict dds advanced streaming 36963
1142 github.tar level 11 row 2 with dict copy advanced streaming 36557
1143 github.tar level 11 row 2 with dict load advanced streaming 36459
1144 github.tar level 12 row 1 advanced streaming 36081
1145 github.tar level 12 row 1 with dict dms advanced streaming 36986
1146 github.tar level 12 row 1 with dict dds advanced streaming 36986
1147 github.tar level 12 row 1 with dict copy advanced streaming 36609
1148 github.tar level 12 row 1 with dict load advanced streaming 36419 36434
1149 github.tar level 12 row 2 advanced streaming 36435 36110
1150 github.tar level 12 row 2 with dict dms advanced streaming 36986
1151 github.tar level 12 row 2 with dict dds advanced streaming 36986
1152 github.tar level 12 row 2 with dict copy advanced streaming 36609
1153 github.tar level 12 row 2 with dict load advanced streaming 36424 36459
1154 github.tar level 13 advanced streaming 35621 35501
1155 github.tar level 13 with dict advanced streaming 38726 37130
1156 github.tar level 13 with dict dms advanced streaming 38903 37220
1157 github.tar level 13 with dict dds advanced streaming 38903 37220
1158 github.tar level 13 with dict copy advanced streaming 38726 37130
1159 github.tar level 13 with dict load advanced streaming 36372 36010
1160 github.tar level 16 advanced streaming 40255 40471
1161 github.tar level 16 with dict advanced streaming 33639 33378
1162 github.tar level 16 with dict dms advanced streaming 33544 33213
1163 github.tar level 16 with dict dds advanced streaming 33544 33213
1164 github.tar level 16 with dict copy advanced streaming 33639 33378
1165 github.tar level 16 with dict load advanced streaming 39353 39081
1166 github.tar level 19 advanced streaming 32837 32134
1167 github.tar level 19 with dict advanced streaming 32895 32709
1168 github.tar level 19 with dict dms advanced streaming 32672 32553
1169 github.tar level 19 with dict dds advanced streaming 32672 32553
1170 github.tar level 19 with dict copy advanced streaming 32895 32709
1171 github.tar level 19 with dict load advanced streaming 32676 32474
1172 github.tar no source size advanced streaming 38438 38828
1173 github.tar no source size with dict advanced streaming 38000
1174 github.tar long distance mode advanced streaming 39757 40252
1175 github.tar multithreaded advanced streaming 38441 38831
1176 github.tar multithreaded long distance mode advanced streaming 39726 40232
1177 github.tar small window log advanced streaming 199558
1178 github.tar small hash log advanced streaming 129870
1179 github.tar small chain log advanced streaming 41669
1180 github.tar explicit params advanced streaming 41227 41385
1181 github.tar uncompressed literals advanced streaming 41122 41525
1182 github.tar uncompressed literals optimal advanced streaming 35388 35397
1183 github.tar huffman literals advanced streaming 38800 38874
1184 github.tar multithreaded with advanced params advanced streaming 41122 41525
1185 silesia level -5 old streaming 6882505 6963781
1186 silesia level -3 old streaming 6568376 6610376
1187 silesia level -1 old streaming 6183403 6179294
1188 silesia level 0 old streaming 4849552 4842075
1189 silesia level 1 old streaming 5314162 5310178
1190 silesia level 3 old streaming 4849552 4842075
1191 silesia level 4 old streaming 4786970 4779186
1192 silesia level 5 old streaming 4707794 4666323
1193 silesia level 6 old streaming 4666383 4603066
1194 silesia level 7 old streaming 4603381 4566984
1195 silesia level 9 old streaming 4546001 4543018
1196 silesia level 13 old streaming 4482135 4493990
1197 silesia level 16 old streaming 4360251 4359864
1198 silesia level 19 old streaming 4283237 4296880
1199 silesia no source size old streaming 4849516 4842039
1200 silesia uncompressed literals old streaming 4849552 4842075
1201 silesia uncompressed literals optimal old streaming 4283237 4296880
1202 silesia huffman literals old streaming 6183403 6179294
1203 silesia.tar level -5 old streaming 6982759 7043687
1204 silesia.tar level -3 old streaming 6641283 6671317
1205 silesia.tar level -1 old streaming 6190795 6187457
1206 silesia.tar level 0 old streaming 4861427 4859271
1207 silesia.tar level 1 old streaming 5336939 5333896
1208 silesia.tar level 3 old streaming 4861427 4859271
1209 silesia.tar level 4 old streaming 4799630 4797470
1210 silesia.tar level 5 old streaming 4719261 4677748
1211 silesia.tar level 6 old streaming 4677729 4613246
1212 silesia.tar level 7 old streaming 4613544 4576664
1213 silesia.tar level 9 old streaming 4555432 4552900
1214 silesia.tar level 13 old streaming 4491765 4502956
1215 silesia.tar level 16 old streaming 4356834 4360527
1216 silesia.tar level 19 old streaming 4264392 4267266
1217 silesia.tar no source size old streaming 4861423 4859267
1218 silesia.tar uncompressed literals old streaming 4861427 4859271
1219 silesia.tar uncompressed literals optimal old streaming 4264392 4267266
1220 silesia.tar huffman literals old streaming 6190795 6187457
1221 github level -5 old streaming 205285 204411
1222 github level -5 with dict old streaming 46718
1223 github level -3 old streaming 190643 193253
1224 github level -3 with dict old streaming 45395
1225 github level -1 old streaming 175568 175468
1226 github level -1 with dict old streaming 43170
1227 github level 0 old streaming 136335 136332
1228 github level 0 with dict old streaming 41148
1229 github level 1 old streaming 142465 142365
1230 github level 1 with dict old streaming 41682
1231 github level 3 old streaming 136335 136332
1232 github level 3 with dict old streaming 41148
1233 github level 4 old streaming 136199
1234 github level 4 with dict old streaming 41251
1241 github level 9 old streaming 135122
1242 github level 9 with dict old streaming 39437
1243 github level 13 old streaming 134064
1244 github level 13 with dict old streaming 39743 39900
1245 github level 16 old streaming 134064
1246 github level 16 with dict old streaming 37577
1247 github level 19 old streaming 134064
1248 github level 19 with dict old streaming 37576
1249 github no source size old streaming 140632 140599
1250 github no source size with dict old streaming 40654
1251 github uncompressed literals old streaming 136335 136332
1252 github uncompressed literals optimal old streaming 134064
1253 github huffman literals old streaming 175568 175468
1254 github.tar level -5 old streaming 46747 51420
1255 github.tar level -5 with dict old streaming 44440 45495
1256 github.tar level -3 old streaming 43537 45077
1257 github.tar level -3 with dict old streaming 41112 41627
1258 github.tar level -1 old streaming 42465 42536
1259 github.tar level -1 with dict old streaming 41196 41198
1260 github.tar level 0 old streaming 38441 38831
1261 github.tar level 0 with dict old streaming 37995
1262 github.tar level 1 old streaming 39342 39270
1263 github.tar level 1 with dict old streaming 38293 38316
1264 github.tar level 3 old streaming 38441 38831
1265 github.tar level 3 with dict old streaming 37995
1266 github.tar level 4 old streaming 38467 38893
1267 github.tar level 4 with dict old streaming 37948
1268 github.tar level 5 old streaming 39693 39651
1269 github.tar level 5 with dict old streaming 39040 39082
1270 github.tar level 6 old streaming 39621 39282
1271 github.tar level 6 with dict old streaming 38622 38656
1272 github.tar level 7 old streaming 39213 38110
1273 github.tar level 7 with dict old streaming 37848 37865
1274 github.tar level 9 old streaming 36758 36760
1275 github.tar level 9 with dict old streaming 36457 36484
1276 github.tar level 13 old streaming 35621 35501
1277 github.tar level 13 with dict old streaming 38726 37130
1278 github.tar level 16 old streaming 40255 40471
1279 github.tar level 16 with dict old streaming 33639 33378
1280 github.tar level 19 old streaming 32837 32134
1281 github.tar level 19 with dict old streaming 32895 32709
1282 github.tar no source size old streaming 38438 38828
1283 github.tar no source size with dict old streaming 38000
1284 github.tar uncompressed literals old streaming 38441 38831
1285 github.tar uncompressed literals optimal old streaming 32837 32134
1286 github.tar huffman literals old streaming 42465 42536
1287 silesia level -5 old streaming advanced 6882505 6963781
1288 silesia level -3 old streaming advanced 6568376 6610376
1289 silesia level -1 old streaming advanced 6183403 6179294
1290 silesia level 0 old streaming advanced 4849552 4842075
1291 silesia level 1 old streaming advanced 5314162 5310178
1292 silesia level 3 old streaming advanced 4849552 4842075
1293 silesia level 4 old streaming advanced 4786970 4779186
1294 silesia level 5 old streaming advanced 4707794 4666323
1295 silesia level 6 old streaming advanced 4666383 4603066
1296 silesia level 7 old streaming advanced 4603381 4566984
1297 silesia level 9 old streaming advanced 4546001 4543018
1298 silesia level 13 old streaming advanced 4482135 4493990
1299 silesia level 16 old streaming advanced 4360251 4359864
1300 silesia level 19 old streaming advanced 4283237 4296880
1301 silesia no source size old streaming advanced 4849516 4842039
1302 silesia long distance mode old streaming advanced 4849552 4842075
1303 silesia multithreaded old streaming advanced 4849552 4842075
1304 silesia multithreaded long distance mode old streaming advanced 4849552 4842075
1305 silesia small window log old streaming advanced 7112062 7111103
1306 silesia small hash log old streaming advanced 6526141
1307 silesia small chain log old streaming advanced 4912197
1308 silesia explicit params old streaming advanced 4795887 4795452
1309 silesia uncompressed literals old streaming advanced 4849552 4842075
1310 silesia uncompressed literals optimal old streaming advanced 4283237 4296880
1311 silesia huffman literals old streaming advanced 6183403 6179294
1312 silesia multithreaded with advanced params old streaming advanced 4849552 4842075
1313 silesia.tar level -5 old streaming advanced 6982759 7043687
1314 silesia.tar level -3 old streaming advanced 6641283 6671317
1315 silesia.tar level -1 old streaming advanced 6190795 6187457
1316 silesia.tar level 0 old streaming advanced 4861427 4859271
1317 silesia.tar level 1 old streaming advanced 5336939 5333896
1318 silesia.tar level 3 old streaming advanced 4861427 4859271
1319 silesia.tar level 4 old streaming advanced 4799630 4797470
1320 silesia.tar level 5 old streaming advanced 4719261 4677748
1321 silesia.tar level 6 old streaming advanced 4677729 4613246
1322 silesia.tar level 7 old streaming advanced 4613544 4576664
1323 silesia.tar level 9 old streaming advanced 4555432 4552900
1324 silesia.tar level 13 old streaming advanced 4491765 4502956
1325 silesia.tar level 16 old streaming advanced 4356834 4360527
1326 silesia.tar level 19 old streaming advanced 4264392 4267266
1327 silesia.tar no source size old streaming advanced 4861423 4859267
1328 silesia.tar long distance mode old streaming advanced 4861427 4859271
1329 silesia.tar multithreaded old streaming advanced 4861427 4859271
1330 silesia.tar multithreaded long distance mode old streaming advanced 4861427 4859271
1331 silesia.tar small window log old streaming advanced 7118772 7117562
1332 silesia.tar small hash log old streaming advanced 6529235 6529234
1333 silesia.tar small chain log old streaming advanced 4917021
1334 silesia.tar explicit params old streaming advanced 4807401 4806873
1335 silesia.tar uncompressed literals old streaming advanced 4861427 4859271
1336 silesia.tar uncompressed literals optimal old streaming advanced 4264392 4267266
1337 silesia.tar huffman literals old streaming advanced 6190795 6187457
1338 silesia.tar multithreaded with advanced params old streaming advanced 4861427 4859271
1339 github level -5 old streaming advanced 216734 213265
1340 github level -5 with dict old streaming advanced 49562
1341 github level -3 old streaming advanced 192160 196126
1342 github level -3 with dict old streaming advanced 44956
1343 github level -1 old streaming advanced 181108 181107
1344 github level -1 with dict old streaming advanced 42383
1345 github level 0 old streaming advanced 141104
1346 github level 0 with dict old streaming advanced 41113
1347 github level 1 old streaming advanced 143692 143693
1348 github level 1 with dict old streaming advanced 42430
1349 github level 3 old streaming advanced 141104
1350 github level 3 with dict old streaming advanced 41113
1351 github level 4 old streaming advanced 141104
1352 github level 4 with dict old streaming advanced 41084
1353 github level 5 old streaming advanced 139399 139402
1354 github level 5 with dict old streaming advanced 38633 38723
1355 github level 6 old streaming advanced 139402 138676
1356 github level 6 with dict old streaming advanced 38723 38744
1357 github level 7 old streaming advanced 138676
1358 github level 7 with dict old streaming advanced 38744 38924
1359 github level 9 old streaming advanced 138676
1360 github level 9 with dict old streaming advanced 38981
1361 github level 13 old streaming advanced 138676
1362 github level 13 with dict old streaming advanced 39731 39725
1363 github level 16 old streaming advanced 138676
1364 github level 16 with dict old streaming advanced 40789
1365 github level 19 old streaming advanced 134064
1366 github level 19 with dict old streaming advanced 37576
1367 github no source size old streaming advanced 140632 140599
1368 github no source size with dict old streaming advanced 40608
1369 github long distance mode old streaming advanced 141104
1370 github multithreaded old streaming advanced 141104
1375 github explicit params old streaming advanced 140937
1376 github uncompressed literals old streaming advanced 141104
1377 github uncompressed literals optimal old streaming advanced 134064
1378 github huffman literals old streaming advanced 181108 181107
1379 github multithreaded with advanced params old streaming advanced 141104
1380 github.tar level -5 old streaming advanced 46747 51420
1381 github.tar level -5 with dict old streaming advanced 44824 46091
1382 github.tar level -3 old streaming advanced 43537 45077
1383 github.tar level -3 with dict old streaming advanced 41800 42222
1384 github.tar level -1 old streaming advanced 42465 42536
1385 github.tar level -1 with dict old streaming advanced 41471 41494
1386 github.tar level 0 old streaming advanced 38441 38831
1387 github.tar level 0 with dict old streaming advanced 38013
1388 github.tar level 1 old streaming advanced 39342 39270
1389 github.tar level 1 with dict old streaming advanced 38940 38934
1390 github.tar level 3 old streaming advanced 38441 38831
1391 github.tar level 3 with dict old streaming advanced 38013
1392 github.tar level 4 old streaming advanced 38467 38893
1393 github.tar level 4 with dict old streaming advanced 38063
1394 github.tar level 5 old streaming advanced 39693 39651
1395 github.tar level 5 with dict old streaming advanced 39049 38997
1396 github.tar level 6 old streaming advanced 39621 39282
1397 github.tar level 6 with dict old streaming advanced 38959 38640
1398 github.tar level 7 old streaming advanced 39213 38110
1399 github.tar level 7 with dict old streaming advanced 38573 37387
1400 github.tar level 9 old streaming advanced 36758 36760
1401 github.tar level 9 with dict old streaming advanced 36233 36312
1402 github.tar level 13 old streaming advanced 35621 35501
1403 github.tar level 13 with dict old streaming advanced 36035 35807
1404 github.tar level 16 old streaming advanced 40255 40471
1405 github.tar level 16 with dict old streaming advanced 38736 38578
1406 github.tar level 19 old streaming advanced 32837 32134
1407 github.tar level 19 with dict old streaming advanced 32876 32702
1408 github.tar no source size old streaming advanced 38438 38828
1409 github.tar no source size with dict old streaming advanced 38015
1410 github.tar long distance mode old streaming advanced 38441 38831
1411 github.tar multithreaded old streaming advanced 38441 38831
1412 github.tar multithreaded long distance mode old streaming advanced 38441 38831
1413 github.tar small window log old streaming advanced 199561
1414 github.tar small hash log old streaming advanced 129870
1415 github.tar small chain log old streaming advanced 41669
1416 github.tar explicit params old streaming advanced 41227 41385
1417 github.tar uncompressed literals old streaming advanced 38441 38831
1418 github.tar uncompressed literals optimal old streaming advanced 32837 32134
1419 github.tar huffman literals old streaming advanced 42465 42536
1420 github.tar multithreaded with advanced params old streaming advanced 38441 38831
1421 github level -5 with dict old streaming cdict 46718
1422 github level -3 with dict old streaming cdict 45395
1423 github level -1 with dict old streaming cdict 43170
1429 github level 6 with dict old streaming cdict 38671
1430 github level 7 with dict old streaming cdict 38758
1431 github level 9 with dict old streaming cdict 39437
1432 github level 13 with dict old streaming cdict 39743 39900
1433 github level 16 with dict old streaming cdict 37577
1434 github level 19 with dict old streaming cdict 37576
1435 github no source size with dict old streaming cdict 40654
1436 github.tar level -5 with dict old streaming cdict 45018 46276
1437 github.tar level -3 with dict old streaming cdict 41886 42354
1438 github.tar level -1 with dict old streaming cdict 41636 41662
1439 github.tar level 0 with dict old streaming cdict 37956
1440 github.tar level 1 with dict old streaming cdict 38766 38761
1441 github.tar level 3 with dict old streaming cdict 37956
1442 github.tar level 4 with dict old streaming cdict 37927
1443 github.tar level 5 with dict old streaming cdict 39037 38999
1444 github.tar level 6 with dict old streaming cdict 38962 38648
1445 github.tar level 7 with dict old streaming cdict 38582 37436
1446 github.tar level 9 with dict old streaming cdict 36350 36401
1447 github.tar level 13 with dict old streaming cdict 36372 36010
1448 github.tar level 16 with dict old streaming cdict 39353 39081
1449 github.tar level 19 with dict old streaming cdict 32676 32474
1450 github.tar no source size with dict old streaming cdict 38000
1451 github level -5 with dict old streaming advanced cdict 49562
1452 github level -3 with dict old streaming advanced cdict 44956
1455 github level 1 with dict old streaming advanced cdict 42430
1456 github level 3 with dict old streaming advanced cdict 41113
1457 github level 4 with dict old streaming advanced cdict 41084
1458 github level 5 with dict old streaming advanced cdict 38633 38723
1459 github level 6 with dict old streaming advanced cdict 38723 38744
1460 github level 7 with dict old streaming advanced cdict 38744 38924
1461 github level 9 with dict old streaming advanced cdict 38981
1462 github level 13 with dict old streaming advanced cdict 39731 39725
1463 github level 16 with dict old streaming advanced cdict 40789
1464 github level 19 with dict old streaming advanced cdict 37576
1465 github no source size with dict old streaming advanced cdict 40608
1470 github.tar level 1 with dict old streaming advanced cdict 39002
1471 github.tar level 3 with dict old streaming advanced cdict 38013
1472 github.tar level 4 with dict old streaming advanced cdict 38063
1473 github.tar level 5 with dict old streaming advanced cdict 39049 38997
1474 github.tar level 6 with dict old streaming advanced cdict 38959 38640
1475 github.tar level 7 with dict old streaming advanced cdict 38573 37387
1476 github.tar level 9 with dict old streaming advanced cdict 36233 36312
1477 github.tar level 13 with dict old streaming advanced cdict 36035 35807
1478 github.tar level 16 with dict old streaming advanced cdict 38736 38578
1479 github.tar level 19 with dict old streaming advanced cdict 32876 32702
1480 github.tar no source size with dict old streaming advanced cdict 38015
tests/test-variants.sh
Executable
+115
View File
@@ -0,0 +1,115 @@
#!/bin/sh
set -e
set -u
set -x
SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
PROG_DIR="$SCRIPT_DIR/../programs"
ZSTD="$PROG_DIR/zstd"
ZSTD_COMPRESS="$PROG_DIR/zstd-compress"
ZSTD_DECOMPRESS="$PROG_DIR/zstd-decompress"
ZSTD_NOLEGACY="$PROG_DIR/zstd-nolegacy"
ZSTD_DICTBUILDER="$PROG_DIR/zstd-dictBuilder"
ZSTD_FRUGAL="$PROG_DIR/zstd-frugal"
ZSTD_NOMT="$PROG_DIR/zstd-nomt"
println() {
printf '%b\n' "${*}"
}
die() {
println "$@" 1>&2
exit 1
}
symbol_present() {
(nm $1 || echo "symbol_present $@ failed") | grep $2
}
symbol_not_present() {
symbol_present $@ && die "Binary '$1' mistakenly contains symbol '$2'" ||:
}
compress_not_present() {
symbol_not_present "$1" ZSTD_compress
}
decompress_not_present() {
symbol_not_present "$1" ZSTD_decompress
}
dict_not_present() {
symbol_not_present "$1" ZDICT_
symbol_not_present "$1" COVER_
}
cliextra_not_present() {
symbol_not_present "$1" TRACE_
symbol_not_present "$1" BMK_
}
legacy_not_present() {
symbol_not_present "$1" ZSTDv0
}
test_help() {
"$1" --help | grep -- "$2"
}
test_no_help() {
test_help $@ && die "'$1' supports '$2' when it shouldn't" ||:
}
extras_not_present() {
dict_not_present $@
legacy_not_present $@
cliextra_not_present $@
test_no_help $@ "--train"
test_no_help $@ "-b#"
}
test_compress() {
echo "hello" | "$1" | "$ZSTD" -t
}
test_decompress() {
echo "hello" | "$ZSTD" | "$1" -t
}
test_zstd() {
test_compress $@
test_decompress $@
}
extras_not_present "$ZSTD_FRUGAL"
extras_not_present "$ZSTD_COMPRESS"
extras_not_present "$ZSTD_DECOMPRESS"
compress_not_present "$ZSTD_DECOMPRESS"
decompress_not_present "$ZSTD_COMPRESS"
decompress_not_present "$ZSTD_DICTBUILDER"
cliextra_not_present "$ZSTD_DICTBUILDER"
legacy_not_present "$ZSTD_DICTBUILDER"
legacy_not_present "$ZSTD_NOLEGACY"
symbol_not_present "$ZSTD" ZSTDv01
symbol_not_present "$ZSTD" ZSTDv02
symbol_not_present "$ZSTD" ZSTDv03
symbol_not_present "$ZSTD" ZSTDv04
test_compress "$ZSTD_COMPRESS"
test_decompress "$ZSTD_DECOMPRESS"
test_zstd "$ZSTD_FRUGAL"
test_zstd "$ZSTD_NOLEGACY"
test_help "$ZSTD" '-b#'
test_help "$ZSTD" --train
test_help "$ZSTD_DICTBUILDER" --train
println "Success!"
tests/test-zstd-versions.py
+19 -5
View File
@@ -23,6 +23,7 @@ from subprocess import Popen, PIPE
repo_url = 'https://github.com/facebook/zstd.git'
tmp_dir_name = 'tests/versionsTest'
make_cmd = 'make'
make_args = ['-j','CFLAGS=-O1']
git_cmd = 'git'
test_dat_src = 'README.md'
test_dat = 'test_dat'
@@ -56,8 +57,11 @@ def proc(cmd_args, pipe=True, dummy=False):
return subproc.communicate()
def make(args, pipe=True):
return proc([make_cmd] + args, pipe)
def make(targets, pipe=True):
cmd = [make_cmd] + make_args + targets
cmd_str = str(cmd)
print('compilation command : ' + cmd_str)
return proc(cmd, pipe)
def git(args, pipe=True):
@@ -223,20 +227,28 @@ if __name__ == '__main__':
dst_zstd = '{}/zstd.{}'.format(tmp_dir, tag) # /path/to/zstd/tests/versionsTest/zstd.<TAG>
if not os.path.isfile(dst_zstd) or tag == head:
if tag != head:
print('-----------------------------------------------')
print('compiling ' + tag)
print('-----------------------------------------------')
r_dir = '{}/{}'.format(tmp_dir, tag) # /path/to/zstd/tests/versionsTest/<TAG>
os.makedirs(r_dir, exist_ok=True)
os.chdir(clone_dir)
git(['--work-tree=' + r_dir, 'checkout', tag, '--', '.'], False)
if tag == 'v0.5.0':
os.chdir(r_dir + '/dictBuilder') # /path/to/zstd/tests/versionsTest/v0.5.0/dictBuilder
make(['clean', 'dictBuilder'], False)
make(['clean'], False) # separate 'clean' target to allow parallel build
make(['dictBuilder'], False)
shutil.copy2('dictBuilder', '{}/dictBuilder.{}'.format(tmp_dir, tag))
os.chdir(r_dir + '/programs') # /path/to/zstd/tests/versionsTest/<TAG>/programs
make(['clean', 'zstd'], False)
make(['clean'], False) # separate 'clean' target to allow parallel build
make(['zstd'], False)
else:
os.chdir(programs_dir)
print('-----------------------------------------------')
print('compiling head')
print('-----------------------------------------------')
make(['zstd'], False)
shutil.copy2('zstd', dst_zstd)
shutil.copy2('zstd', dst_zstd)
# remove any remaining *.zst and *.dec from previous test
os.chdir(tmp_dir)
@@ -251,7 +263,9 @@ if __name__ == '__main__':
print('cp ' + dict_files + ' ' + dict_source_path)
execute('cp ' + dict_files + ' ' + dict_source_path, param_shell=True)
print('-----------------------------------------------')
print('Compress test.dat by all released zstd')
print('-----------------------------------------------')
error_code = 0
for tag in tags:
tests/zstreamtest.c
+8 -8
View File
@@ -906,7 +906,7 @@ static int basicUnitTests(U32 seed, double compressibility)
in.pos = 0;
in.size = CNBufferSize - in.size;
CHECK(!(ZSTD_compressStream2(cctx, &out, &in, ZSTD_e_end) == 0), "Not finished");
CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, cSize));
CHECK_Z(ZSTD_decompress(decodedBuffer, CNBufferSize, compressedBuffer, out.pos));
DISPLAYLEVEL(3, "OK \n");
DISPLAYLEVEL(3, "test%3i : ZSTD_compressStream2() ZSTD_c_stableOutBuffer modify buffer : ", testNb++);
@@ -1063,7 +1063,7 @@ static int basicUnitTests(U32 seed, double compressibility)
if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error;
if (in.pos != in.size) goto _output_error;
}
/* The dictionary should presist across calls. */
/* The dictionary should persist across calls. */
{ ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0};
ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error;
@@ -1128,7 +1128,7 @@ static int basicUnitTests(U32 seed, double compressibility)
if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error;
if (in.pos != in.size) goto _output_error;
}
/* The ddict should presist across calls. */
/* The ddict should persist across calls. */
{ ZSTD_outBuffer out = {decodedBuffer, decodedBufferSize, 0};
ZSTD_inBuffer in = {compressedBuffer, cSize, 0};
if (ZSTD_decompressStream(dctx, &out, &in) != 0) goto _output_error;
@@ -1175,12 +1175,12 @@ static int basicUnitTests(U32 seed, double compressibility)
/* We should succeed to decompress with the dictionary. */
CHECK_Z( ZSTD_initDStream_usingDict(dctx, dictionary.start, dictionary.filled) );
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) );
/* The dictionary should presist across calls. */
/* The dictionary should persist across calls. */
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) );
/* We should succeed to decompress with the ddict. */
CHECK_Z( ZSTD_initDStream_usingDDict(dctx, ddict) );
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) );
/* The ddict should presist across calls. */
/* The ddict should persist across calls. */
CHECK_Z( ZSTD_decompressDCtx(dctx, decodedBuffer, decodedBufferSize, compressedBuffer, cSize) );
/* When we reset the context the ddict is cleared. */
CHECK_Z( ZSTD_initDStream(dctx) );
@@ -1855,7 +1855,7 @@ static int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double co
&& oldTestLog /* at least one test happened */ && resetAllowed) {
maxTestSize = FUZ_randomLength(&lseed, oldTestLog+2);
maxTestSize = MIN(maxTestSize, srcBufferSize-16);
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize;
{ U64 const pledgedSrcSize = (FUZ_rand(&lseed) & 3) ? ZSTD_CONTENTSIZE_UNKNOWN : maxTestSize;
CHECK_Z( ZSTD_CCtx_reset(zc, ZSTD_reset_session_only) );
CHECK_Z( ZSTD_CCtx_setPledgedSrcSize(zc, pledgedSrcSize) );
}
@@ -2277,7 +2277,7 @@ static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest,
CHECK_Z( ZSTD_CCtx_refPrefix(zc, dict, dictSize) );
}
/* Adjust number of workers occassionally - result must be deterministic independent of nbWorkers */
/* Adjust number of workers occasionally - result must be deterministic independent of nbWorkers */
CHECK_Z(ZSTD_CCtx_getParameter(zc, ZSTD_c_nbWorkers, &nbWorkers));
if (nbWorkers > 0 && (FUZ_rand(&lseed) & 7) == 0) {
DISPLAYLEVEL(6, "t%u: Modify nbWorkers: %d -> %d \n", testNb, nbWorkers, nbWorkers + iter);
@@ -2357,7 +2357,7 @@ static int fuzzerTests_newAPI(U32 seed, int nbTests, int startTest,
/* multi - fragments decompression test */
if (!dictSize /* don't reset if dictionary : could be different */ && (FUZ_rand(&lseed) & 1)) {
DISPLAYLEVEL(5, "resetting DCtx (dict:%p) \n", dict);
DISPLAYLEVEL(5, "resetting DCtx (dict:%p) \n", (void const*)dict);
CHECK_Z( ZSTD_resetDStream(zd) );
} else {
if (dictSize)
zlibWrapper/examples/fitblk.c
+1 -1
View File
@@ -119,7 +119,7 @@ local int recompress(z_streamp inf, z_streamp def)
if (ret == Z_MEM_ERROR)
return ret;
/* compress what was decompresed until done or no room */
/* compress what was decompressed until done or no room */
def->avail_in = RAWLEN - inf->avail_out;
def->next_in = raw;
if (inf->avail_out != 0)
zlibWrapper/examples/fitblk_original.c
+1 -1
View File
@@ -109,7 +109,7 @@ local int recompress(z_streamp inf, z_streamp def)
if (ret == Z_MEM_ERROR)
return ret;
/* compress what was decompresed until done or no room */
/* compress what was decompressed until done or no room */
def->avail_in = RAWLEN - inf->avail_out;
def->next_in = raw;
if (inf->avail_out != 0)
zlibWrapper/zstd_zlibwrapper.c
+7
View File
@@ -1189,3 +1189,10 @@ ZEXTERN const z_crc_t FAR * ZEXPORT z_get_crc_table OF((void))
return get_crc_table();
}
#endif
/* Error function */
ZEXTERN const char * ZEXPORT z_zError OF((int err))
{
/* Just use zlib Error function */
return zError(err);
}