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Author SHA1 Message Date
Yann Collet 230d7acc7d cli : add support for --threads=# command 
updated documentation
add relevant test case
 2017-04-21 11:38:13 -07:00
Yann Collet d0b1846cf4 ignore more cmake build artefacts 2017-04-21 10:59:36 -07:00
Yann Collet c17e020c9a disable assert when compiling paramgrill 
paramgrill is a benchmark calibration function.
Speed accuracy is critical, it cannot be altered by assert.
 2017-04-20 12:50:02 -07:00
Yann Collet 16f9c572fc Merge branch 'dev' into compressionFlow 2017-04-20 11:16:40 -07:00
Yann Collet e348dad305 minor long line reformatting 2017-04-20 11:14:13 -07:00
Yann Collet e847730452 slightly refined README comments on lib-mt 2017-04-18 23:15:28 -07:00
Yann Collet 2c5514c759 fixed ZSTDMT_initCStream_advanced() 
Must use the new ZSTD_compressBegin_usingCDict_advanced()
to enforce correct frame parameters
 2017-04-18 22:52:41 -07:00
Yann Collet 0bb381dad8 added test for ZSTD_initCStream_advanced() 
when params.fParams.contentSizeFlags = 1
and pledgedSrcSize = 0
then srcSize should be considered 0 (empty), and not "unknown"
 2017-04-18 15:08:52 -07:00
Yann Collet a4cab80183 added ZSTD_copyCCtx_internal() 
which respects provided fParams.
 2017-04-18 14:54:54 -07:00
Yann Collet b402f1ef37 added make list 2017-04-18 14:34:24 -07:00
Yann Collet 30fb499208 Changed ZSTD_resetCCtx_advanced() into ZSTD_resetCCtx_internal() 
for naming consistency :
_advanced() can be invoked
while _internal() are strictly static
 2017-04-18 14:08:50 -07:00
Yann Collet 715b9aa113 created ZSTD_compressBegin_usingCDict_advanced() 2017-04-18 13:55:53 -07:00
Yann Collet 291f0cb54a Merge branch 'dev' into compressionFlow 2017-04-18 03:18:34 -07:00
Yann Collet af4f45b682 Improved code comments for block functions 2017-04-18 03:17:44 -07:00
Yann Collet 4f818182b8 clarified frame parameters for ZSTD_compress*_usingCDict() 
created ZSTD_compressBegin_usingCDict_internal(),
which gives direct control to frame Parameters.
ZSTD_resetCStream_internal() now points into it.
 2017-04-17 18:29:06 -07:00
Yann Collet 9c4c970399 Merge branch 'dev' into compressionFlow 2017-04-17 16:33:09 -07:00
Yann Collet c47c68f6ca proper evaluation of Huffman CTable size 2017-04-17 16:14:21 -07:00
Yann Collet f0c9437fdf Merge branch 'dev' into compressionFlow 2017-04-17 15:48:13 -07:00
Yann Collet 415cb68e53 Merge branch 'dev' into compressionFlow 2017-04-17 14:51:05 -07:00
Yann Collet 2afb075382 Merge branch 'dev' into compressionFlow 2017-04-14 15:08:31 -07:00
Yann Collet f913cbed33 fixed : memory leak in fuzzer test 2017-04-13 22:46:51 -07:00
Yann Collet 88009a8ba2 removed srcSize control from CStream 
since it's already done from lower bufferless API level
 2017-04-12 00:51:24 -07:00
Yann Collet 20d5e03893 content size is controlled at bufferless level 
so it's active for all entry points

Also : added relevant test (wrong content size) in fuzzer
 2017-04-11 18:34:02 -07:00
Yann Collet 6ab02e16b8 Merge branch 'dev' into compressionFlow 2017-04-11 17:42:15 -07:00
Yann Collet 5c42d0edc8 cli : better status display for zstdmt in 1-thread mode 2017-04-11 16:57:32 -07:00
Yann Collet 324c2cd908 Merge branch 'dev' of github.com:facebook/zstd into dev 2017-04-11 14:42:46 -07:00
Yann Collet 0e30059ba1 cli : FIO_createDictBuffer() replaces FIO_loadFile() 
makes it more explicit that it allocates a buffer
and that it's meant to be used for dictionary.

Also : simplified function a bit,
now only works for dictionaries up to DICTSIZE_MAX
 2017-04-11 14:41:02 -07:00
Yann Collet 4ee6b15dac force contentSizeFlag=0 when using ZSTD_initCStream_usingCDict() 
because by definition srcSize is not known when using this prototype.
added relevant test

Note : this use was already working, because at a later stage
(both ZSTD_compressBegin_usingCDict() and ZSTD_copyCCtx())
pledgedSrcSize=0 is translated into "unknown", no matter the frame parameter.
This is not correct, but of little importance,
as the medium term plan is to no longer set fParams within CDict
 2017-04-11 11:59:44 -07:00
Yann Collet ab9162ebb4 simplified call graph 
by calling ZSTD_compressBegin_internal() instead of ZSTD_compressBegin_advanced()
 2017-04-11 10:46:20 -07:00
Yann Collet e88034fe26 simplified ZSTD_initCStream*() flow 
all variants converge towards ZSTD_initCStream_stage2()
 2017-04-10 22:24:02 -07:00
Yann Collet 4b987ad8ce Introduce ZSTD_initCStream_internal() 
This is now the regroup point for ZSTD_initCStream*() functions

ZSTD_initCStream_advanced() now properly checks for parameters validity.

Also : added <assert.h> usage inside zstd_compress.c
Needs ZSTD_DEBUG=1 macro to be triggered.
Will be triggered by default from `tests` directory
 2017-04-10 17:50:44 -07:00
Yann Collet 0181fef545 ensure cctx internal buffer is correctly sized in case of memory error 2017-04-06 01:25:26 -07:00
Yann Collet 36c2a03757 updated comments for ZSTD_resetCStream() 2017-04-05 22:06:21 -07:00
Yann Collet ce80098f14 improved zstreamtest --mt to trap bug #644 2017-04-05 16:34:09 -07:00
Yann Collet 003a244324 DStream : ensure correct size of internal buffers in case of error 2017-04-05 15:28:56 -07:00
Yann Collet 02d37aa1c1 ensure correct size of internal buffers in case of error 2017-04-05 14:53:51 -07:00
Yann Collet 9631e603ae paramgrill : results from optimizer use cli format 
Best found configuration is displayed
using documented cli advanced parameter syntax.
 2017-04-04 16:54:33 -07:00
Yann Collet 89b32f3db0 fix paramgrill -O# 
ensure proposed config does not require more memory than necessary
 2017-04-04 16:41:11 -07:00
Yann Collet 2724f25567 fixed paramgrill -O# 
find optimal settings for a minimum speed
 2017-04-04 16:31:17 -07:00
Yann Collet c2007388a5 fixed bench.c : optional advanced parameters applied 
before creating cdict
 2017-04-04 15:35:06 -07:00
Yann Collet 81d6380139 minor bench.c adjustments 
shorter debug messages
no need to check decompressedLength==0 twice
 2017-04-04 15:21:09 -07:00
Yann Collet 7cf78f1be7 Protects ZSTD_compressBegin_usingCDict() vs NULL cdict dereference 
Will issue an error (GENERIC) is cdict==NULL
 2017-04-04 12:38:14 -07:00
Yann Collet a36330a27d minor man update, for overlapSize 2017-04-03 14:57:24 -07:00
Yann Collet 805c5a3efb updated documentation on multithreading modes 2017-04-01 00:36:31 -07:00
Yann Collet 30c7698970 optimize ZSTDMT_compress() memory usage 
does no longer allocate temporary buffers
when there is enough room in dstBuffer to decompress directly there.
(previous method would skip that for 1st chunk only).

Also : fix ZSTD_compressBound() for small srcSize
 2017-03-31 18:27:03 -07:00
Yann Collet 3f75d52527 Changed ZSTD_compressBound() 
required so that if Total = A+B
compressBound(Total) <= compressBound(A) + compressBound(B)
under condition of a minimum size for A and B

Will help for ZSTDMT_compress() memory allocation
 2017-03-31 17:11:38 -07:00
Yann Collet 7b70a1969e Merge branch 'dev' into zstdmt 2017-03-31 16:22:33 -07:00
Yann Collet d11c7bf9bf Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-31 16:19:52 -07:00
Yann Collet 596ee423bb Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-31 16:19:33 -07:00
Yann Collet a935d67bf1 minor typo fixes in specification 2017-03-31 16:19:04 -07:00
Yann Collet 14433ca1ad numerous typos and clarifications in format specification 
fix limit values of Window_Size
bump version to 0.2.5
 2017-03-31 15:45:58 -07:00
Yann Collet eea7858e2b fixed minor warnings in debug code 2017-03-30 16:47:19 -07:00
Yann Collet 34cc487d05 overlap at full windowSize for max compression level 
as it provides max compression ratio
 2017-03-30 16:23:22 -07:00
Yann Collet 458e955c23 improved ZSTDMT_compress() 
Use a bit more threads by default.
Uses overlap segments to boost compression ratio (like the streaming variant)
 2017-03-30 15:51:58 -07:00
Yann Collet 274f59919d Changed memory strategy to __packed for gcc 
Method 1 __packed is always as good or better than memcpy().
But it's not portable, as it depends on compiler extension.

For gcc, __pakced directive works fine.
Furthermore, gcc has serious performance issues with memcpy() on ARM 32 bits.
See #620
 2017-03-30 12:52:14 -07:00
Yann Collet 6851db48e0 created contrib/cleanTabs 2017-03-30 12:42:44 -07:00
Yann Collet 3d58a1f9b9 fixed Visual fuzzer project 2017-03-30 12:28:09 -07:00
Yann Collet 2bcefcc50d fixed Visual Studio projects 2017-03-29 22:03:27 -07:00
Yann Collet ca5a8bbe36 re-added patch ... 2017-03-29 17:15:27 -07:00
Yann Collet 1e1e26f2ac fixed #634 : ZSTDMT_compressCCtx() doesn't provide frame content size in header 2017-03-29 17:09:59 -07:00
Yann Collet 0ef6803707 added ZSTD_getFrameContentSize() to ZSTDMT unit test in fuzzer 
Now tests fail, because ZSTDMT_compress() doesn't fill frame content size correctly.
 2017-03-29 16:58:57 -07:00
Yann Collet 2e2e78de47 removed unnecessary restriction on minmatchLength 
it's now transparently translated to nearest value when unsupported
(7->6) (3->4)
 2017-03-29 16:02:47 -07:00
Yann Collet 26769d88bc Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-29 15:21:30 -07:00
Yann Collet 933ce4a1dd fix : minmatch 7 conversion 
minmatch 7 now converted to minmatch 6 for strategies which do not support 7
Used to folded into "default", which applied minmatch 4
 2017-03-29 14:35:38 -07:00
Yann Collet 5bde4be5a1 fix : bench automatically adapts parameters to srcSize 2017-03-29 12:10:38 -07:00
Yann Collet 57458d4cea Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-27 14:43:53 -07:00
Yann Collet 41fefd573a Improved speed tests 
Better compatibility with Mac OS-X
Force attribution to a selected core # (Linux)
 2017-03-26 23:52:19 -07:00
Yann Collet 4cf0093571 restored bonus rule 2017-03-26 14:51:00 -07:00
Yann Collet 69017bf253 Merge branch 'dev' into LegacyDictBuilder 2017-03-26 14:39:13 -07:00
Yann Collet 582760818f minor refactor 
add const
changed if for easier to add new conditions
 2017-03-26 03:04:56 -07:00
Yann Collet 858f72eeb8 fixed dictBuilder issue 
dictionary loading would fail during entropy analysis
 2017-03-26 02:50:00 -07:00
Yann Collet ecee9f2ef8 fixed conversion warnings 2017-03-26 00:59:14 -07:00
Yann Collet 4c41d37fcc changed test for new syntax 
--dictID= and --maxdict=
 2017-03-24 18:36:56 -07:00
Yann Collet d41f707e88 minor improvement : remove duplicates with 1 char prefix difference 2017-03-24 17:56:45 -07:00
Yann Collet 96aa3019b2 changed advanced commands --maxdict= and --dictID= 
now works with the `=` variant, which is the recommended one.
Old variant `--dictID #` still works, for compatibility with existing scripts.
Long term objective is to remove the old variant..
 2017-03-24 16:04:29 -07:00
Yann Collet 9da3b215ec Ensure all limits derived from same constants 
Now uses ZDICT_DICTSIZE_MIN and ZDICT_CONTENTSIZE_MIN
from zdict.h.

Also : reduced values to 256 and 128 respectively
 2017-03-24 15:02:09 -07:00
Yann Collet 16a0b10781 fixed ZSTD_loadZstdDictionary() 
forgot to add the dictionary content
(tests were not failing, just compressing less).

Also : added size protections when adding dict content
since hc/bt table filling would fail if size < 8
 2017-03-24 12:46:46 -07:00
Yann Collet 23776ce290 fixed ERROR_GENERIC on dstSize_tooSmall 
required by users which depends on this error code to size dest buffer
 2017-03-23 17:59:50 -07:00
Yann Collet f332ece468 dictBuilder fails to create dictionary on certain input 
Properly expressed with an error code (see zstd_errors.h)
and a cli return code != 0
 2017-03-23 16:24:02 -07:00
Yann Collet bea78e8fc2 limited CDict acceptation criteria to be the same as DDict 2017-03-23 15:46:06 -07:00
Yann Collet 35fc66f257 updated .gitignore for new cmake script 2017-03-21 17:52:42 -07:00
Yann Collet f3dfcdccd1 bump version number 2017-03-21 12:18:28 -07:00
Yann Collet 8a7f416871 fixed typo in server type 2017-03-17 15:33:09 -07:00
Yann Collet dcc04944f6 Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-17 14:26:17 -07:00
Yann Collet e5c4f04033 updated compression graph 2017-03-17 14:25:57 -07:00
Yann Collet 0a189b63fe fix minor details in man page 2017-03-16 16:33:53 -07:00
Yann Collet 118a8e9ade Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-14 04:20:12 -07:00
Yann Collet 7ae3039f41 updated NEWS for v1.1.4 2017-03-14 04:19:51 -07:00
Yann Collet baa9b114f8 minor text refactor in readme 2017-03-07 16:24:54 -08:00
Yann Collet 38ab1db3cd fixed lzbench link 2017-03-06 17:24:34 -08:00
Yann Collet eeb9758c39 fix : remove mempcpy line in bench 2017-03-06 17:22:47 -08:00
Yann Collet 764c2fdfed updated benchmark table 
zstd v1.1.3, new station i7-6700K
 2017-03-06 17:20:44 -08:00
Yann Collet 3db00373c5 Merge branch 'dev' of github.com:facebook/zstd into dev 2017-03-05 21:18:25 -08:00
Yann Collet 8b1d004031 added -Wformat-security flag, as recommended by @pixelb 2017-03-05 21:17:32 -08:00
Yann Collet 1f2c95c5f3 minor code refactor in HUF module 2017-03-05 21:07:20 -08:00
Yann Collet e02409fdc3 update NEWS on @iburinoc's 32-bits version improvement 2017-03-02 17:14:57 -08:00
Yann Collet fe5d27062e disable prefetch-decode for 32-bits target 
This decoder variant is detrimental to x86 architecture
likely due to register pressure.

Note that the variant is disabled for all 32-bits targets.
It's unclear if it would help for different architectures,
such as ARM, MIPS or PowerPC.
 2017-03-02 17:09:21 -08:00
Yann Collet 78208bd8be fixed : build zstd cli after libzstd 2017-03-01 21:02:06 -08:00
Yann Collet 27526c7201 make : added target shortest 
shortest only run fast part of playTests.sh .
cc @iburinoc
 2017-03-01 17:02:49 -08:00
Yann Collet c1c040eae1 added gzip tests 
also : made sure zstd --format=gzip -V
would fail if gzip compatibility is not supported
 2017-03-01 16:49:20 -08:00