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2303 Commits
Author SHA1 Message Date
Quentin Carbonneaux e0d5eca8fa fix forgotten numTagBits in getTagMask 2021-01-20 00:54:20 -08:00
Quentin Carbonneaux 1e65711ca5 a couple performance improvement changes for ldm 2021-01-20 00:54:20 -08:00
Thomas Waldmann 92a2b5ccc9 fixup: lits means literals 2021-01-07 23:30:42 +01:00
Thomas Waldmann f9802d80a0 fix typos (work done by Andrea Gelmini) 2021-01-07 18:47:23 +01:00
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
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 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 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
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
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
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
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
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
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
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
senGitHubNick Terrell
 		e924a0fa51 Explicit cast for visual warnings 
Github has automatic commits now! Cool

Co-authored-by: Nick Terrell <nickrterrell@gmail.com>
 2020-11-19 17:32:40 -05:00
senhuang42 dcbbf7c09f Unroll isRLE loop 2020-11-19 12:38:13 -05:00
senhuang42 05c0229668 Clean up visual conversion warnings 2020-11-18 15:36:29 -05:00
senhuang42 d6d7ba2a1f Modification to offset validation to include entire sequence 2020-11-17 10:13:22 -05:00
senhuang42 8f3136a9c7 Fix assert edge case, improve documentation in zstd.h 2020-11-16 18:05:35 -05:00
senhuang42 f6baad87d6 Fix warnings and make validation enabled by default 2020-11-16 12:00:06 -05:00
senhuang42 55b90ef010 Fix unit tests to agree with new changes 2020-11-16 11:36:37 -05:00
senhuang42 7f563b0519 Add new sequence format as an experimental CCtx param 2020-11-16 10:49:17 -05:00
senhuang42 347824ad73 Overhaul logic to simplify, add in proper validations, fix match splitting 2020-11-16 10:49:17 -05:00
senhuang42 46824cb018 Add new sequence compress api params to cctx 2020-11-16 10:49:17 -05:00
senhuang42 48405b4633 Fix srcSize=0 edge case 2020-11-16 10:49:17 -05:00
senhuang42 022e6d81e7 Fix literals length calculation 2020-11-16 10:49:17 -05:00
senhuang42 dad20b5ccb Remove dstCapacity error check 2020-11-16 10:49:17 -05:00
senhuang42 b8e16a2057 Remove extraneous function in this API 2020-11-16 10:49:17 -05:00
senhuang42 f29507c4fc Add check comparing offset to window size 2020-11-16 10:49:17 -05:00
senhuang42 7a6e46a92f Fix MSAN errors 2020-11-16 10:49:17 -05:00
senhuang42 cc2642bd17 Address edge case with endPosInSequence 2020-11-16 10:49:17 -05:00
senhuang42 fd10007174 Change debug levels to appropriate ones 2020-11-16 10:49:17 -05:00
senhuang42 2db8441245 Add RLE support 2020-11-16 10:49:17 -05:00
senhuang42 dfef298336 Fix various build warnings 2020-11-16 10:49:17 -05:00