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5201 Commits
Author SHA1 Message Date
senhuang42 c2c9b8a7ec Address comments, clean up interface/internals 2021-01-07 12:29:12 -05:00
senhuang42 22b7bff2bc Add unit test, improve documentation 2021-01-07 12:29:12 -05:00
senhuang42 ea52fc3606 Use XXHash for hash function, create a sensible public interface 2021-01-07 12:29:12 -05:00
senhuang42 7c1a79f232 Add debuglog statements 2021-01-07 12:29:11 -05:00
senhuang42 d1a6a9d285 Reference requested dict ID at decompression time 2021-01-07 12:29:11 -05:00
senhuang42 5a6d3eef2b Allocate memory for DDict hash set when parameter is set 2021-01-07 12:29:11 -05:00
senhuang42 fd5b608f1c Add parameter to control multiple DDicts 2021-01-07 12:29:11 -05:00
senhuang42 f933668d3f Implement hashset for dictIDs 2021-01-07 12:29:11 -05:00
Yann Collet cefdc023f7 The CLI can be linked to libzstd dynamic library 
invoking target zstd-dll
 2021-01-06 18:00:24 -08:00
Yann Collet 9866148e22 removed redundant tests 
clang v3.8 tests are either flacky or redundant,
prefer using clang-latest.
 2021-01-06 15:40:20 -08:00
Nick Terrell 58476bcf7f Don't shrink window log in ZSTD_getCParams() 
Treat ZSTD_getCParams() and ZSTD_adjustCParams() in the same way
we treat streaming compression. Choose parameters based on the
dictionary size + source size, and assume the source size is small
if unkown. But, don't shrink the window log down in
ZSTD_adjustCParams_internal().
 2021-01-04 15:54:09 -08:00
Nick Terrell 9d31c704d5 Don't shrink window log when streaming with a dictionary 
Fixes #2442.

1. When creating a dictionary keep the same behavior as before.
   Assume the source size is 513 bytes when adjusting parameters.
2. When calling ZSTD_getCParams() or ZSTD_adjustCParams() keep
   the same behavior as before.
3. When attaching a dictionary keep the same behavior of ignoring
   the dictionary size. When streaming this will select the
   largest parameters and not adjust them down. But, the CDict
   will use the correctly sized parameters, which seems like the
   right tradeoff.
4. When not attaching a dictionary (either forced not to, or
   using a prefix dictionary) we select parameters based on the
   dictionary size + source size, and assume the source size is
   small, which is the same behavior as before. But, now we don't
   adjust the window log (and hash and chain log) down when the
   source size is unknown.

When the source size is unknown all cdicts should attach, except
when the user disables attaching, or `forceWindow` is used. This
means that when streaming with a CDict we end up in the good case
where we get small CDict parameters, and large source parameters.

TODO: Add a streaming + dictionary regression test case.
 2021-01-04 15:54:09 -08:00
Nick Terrell 66e811d782 [license] Update year to 2021 2021-01-04 17:53:52 -05:00
Yann ColletandGitHub cfff4c1cd5 Merge pull request #2439 from senhuang42/skippable_frame_api 
Generate skippable frame API
 2020-12-28 11:22:07 -08:00
Gregory Szorc dd1a7e41ee Add ifndef guards for _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE 
This ensures the symbols aren't redefined, which would result in a compiler
error.

I was getting redefined symbols for _LARGEFILE64_SOURCE when building for
32-bit x86 Linux on an older CentOS release in a CI environment. With this
change, I'm able to compile the single file library in this environment.

Closes #2443.
 2020-12-26 10:02:45 -07:00
senhuang42 5c41490bfe Use pre-defined constants 2020-12-21 11:52:05 -05:00
senhuang42 7e11bd012b Implement skippable frame function 2020-12-21 11:13:22 -05:00
Yann Collet 9648bf027b try to keep libzstd.a "as is" once created 
to be compatible with scenarios such as
`make -j allmost`
 2020-12-20 17:10:57 -08:00
Yann Collet 7c495e8ea2 updated version number to v1.4.8 2020-12-18 15:52:11 -08:00
Yann Collet a7cb4af573 added emphasis on the alignment condition of workspace 
and made it a programming mistake (`assert()`)
rather than a runtime error.
 2020-12-18 15:04:09 -08:00
Nick Terrell ae85676d44 Fix alignment of scratchBuffer in HUF_compressWeights() 
The scratch buffer must be 4-byte aligned. This causes test failures in
32-bit systems, where the stack isn't aligned.

Fixes Issue #2428.
 2020-12-17 14:30:27 -08:00
Yann Collet 0b39531d75 moving all references to release branch 
was previously `master`
 2020-12-16 23:00:35 -08:00
Yann Collet f647a759fe updated version number to v1.4.7 
and updated doc
 2020-12-15 20:53:05 -08:00
Yann ColletandGitHub b8c3a473ec Merge pull request #2420 from terrelln/huf-comment 
[huf_compress] Refactor and comment HUF_buildCTable()
 2020-12-14 16:14:07 -08:00
Yann Collet c56723ab03 replace final links by direct copy 
link can behave slightly differently from real binaries,
breaking a few scripts relying on "real binary" assumption.
 2020-12-10 13:25:08 -08:00
Felix HandteandGitHub f861e8c07b Merge pull request #2421 from felixhandte/pc-no-sed 
Don't Use Regexes to Build Pkg-Config File
 2020-12-09 18:58:17 -05:00
W. Felix Handte 9dab03db90 Create Enum to Represent Static/Dynamic Allocation Distinction in cwksp 2020-12-09 14:57:37 -05:00
W. Felix Handte db9e73cb07 Don't ASAN-Poison Statically-Allocated Workspaces 
Addresses #2286.
 2020-12-09 13:00:47 -05:00
W. Felix Handte b521183c74 Avoid Use of Regexes in Building Package-Config File 2020-12-08 20:10:05 -05:00
Nick Terrell 1bbcf07bd5 [huf_compress] Refactor and comment HUF_buildCTable() 
Comment and refactor `HUF_buildCTable()` and the helper functions
it calls as I read and understand the code. Hopefully this refactor
makes the code a bit more clear.
 2020-12-08 13:57:01 -08:00
Yann ColletandGitHub b86e3c9304 Merge pull request #2415 from facebook/fix_aliasing 
fix gcc-10 strict aliasing warnings
 2020-12-04 21:30:57 -08:00
Nick TerrellandGitHub fad175f9c1 Merge pull request #2412 from animalize/dict_compressionlevel 
use ZSTD_CLEVEL_DEFAULT in zdict.c
 2020-12-04 17:09:30 -08:00
Yann Collet 6132df8dd3 fix gcc-10 strict aliasing warnings 
by exposing HUF_CElt declaration.
 2020-12-04 16:43:19 -08:00
Yann Collet 68c14bdff2 minor speed improvement to HUF_readCTable() 
faster by ~+1-2%
 2020-12-04 16:33:39 -08:00
Nick TerrellandGitHub c238db046f Merge pull request #2414 from terrelln/mt-progress 
[lib] Ensure that multithreaded compression always makes some progress
 2020-12-04 16:30:08 -08:00
Nick Terrell 4c58cb8383 [lib] Ensure that multithreaded compression always makes some progress 2020-12-03 20:25:14 -08:00
animalize 1aec77ea89 use ZSTD_CLEVEL_DEFAULT in zdict.c 2020-12-03 12:46:57 +08:00
Nick TerrellandGitHub 6672689e7e Merge pull request #2406 from terrelln/linux-wrapper-api 
[linux] Add the linux wrapper API
 2020-12-02 16:49:03 -08:00
Yann ColletandGitHub 91c1b57be9 Merge pull request #2409 from facebook/test_makefile 
Minor refactor
 2020-12-02 15:33:54 -08:00
Nick TerrellandGitHub 894ae36675 Merge pull request #2390 from animalize/clamp_level 
Clamp compression level
 2020-12-02 14:35:58 -08:00
senhuang42 2cbd038528 Move max nb seq check to per-block 2020-12-02 12:11:32 -05:00
Nick Terrell 3cda5fae77 [minor][lib] Remove double semicolon 2020-12-02 01:08:08 -08:00
Yann Collet 9f8b180d5d fixed API documentation 2020-12-02 00:15:07 -08:00
Yann ColletandGitHub 6112b82526 Merge pull request #2348 from dscheg/dev 
Fix dll path in case of cross-compilation
 2020-12-01 17:59:56 -08:00
senhuang42 3efe9c902b Add sequence nb validation to compressSequences(), adjust minMatch comparisons 2020-12-01 10:54:45 -05:00
senhuang42 4c5f337248 Use cctx's minMatch instead of global MINMATCH, make fuzzer use validation 2020-11-30 15:41:20 -05:00
Dmitriy Titarenko 61f71753d4 Pass dictBufferCapacity to COVER_selectDict() 
closes #2371
 2020-11-22 23:45:18 +05:00
senandGitHub c5fbd55dac Merge pull request #2387 from senhuang42/compress_sequence_API 
[RFC] New sequence compression API
 2020-11-20 16:54:20 -05:00
senhuang42 7742f076b4 Add experimental param for sequence validation 2020-11-20 11:57:41 -05:00
senhuang42 0e32928b7d Remove unnecessary repcode backup, apply style choices, use function pointer 2020-11-20 11:02:19 -05:00