AuroraMiddleware/zstd
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72a3adf826
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181 Commits

Author SHA1 Message Date
Yann Collet
72a3adf826 updated format documentation 
to match last edits of RFC8478.
 2018-09-25 16:34:26 -07:00
Yann Collet
a54c86cfc6 defined a minimum negative level 
which can be probed using new function ZSTD_minCLevel().

Also : redefined ZSTD_TARGETLENGTH_MIN/MAX for consistency

used the opportunity to bump version number to v1.3.6
 2018-09-20 16:52:03 -07:00
Yann Collet
005f000aed updated documentation of *refPrefix() 
indicating the equivalence with `diff` operation.
 2018-09-18 13:07:08 -07:00
Yann Collet
7269fe6cd3 minor code comment update 2018-09-14 16:06:35 -07:00
Yann Collet
0403148315
Merge pull request #1295 from felixhandte/hdr-intro-comment-negative-lvls 
Proposed Update to Zstd.h Introduction Comment
 2018-09-14 15:29:19 -07:00
Yann Collet
674dd21bd0 final parameter tuning 2018-09-12 17:25:34 -07:00
Yann Collet
55a8f84a2c spec clarification 
following #1305 comments from @ulikunitz
 2018-09-05 12:31:33 -07:00
W. Felix Handte
8e944ccade Regenerate Documentation 2018-08-22 17:07:34 -07:00
Nick Terrell
c1a7defee1 Small fixes to zstd specification 
Update to keep in sync with the RFC.
 2018-07-10 15:07:36 -07:00
Yann Collet
a55ffbb31b removed unused imaged 2018-06-27 16:03:46 -07:00
Yann Collet
c0007893b4 added graph for cdict speed v1.3.5 improvements 2018-06-27 15:58:34 -07:00
Yann Collet
4489daec09 slightly adjusted default-distribution threshold 
depending on strategy.
fast favors faster compression and decompression speeds.
 2018-06-26 20:10:45 -07:00
Yann Collet
d70c4a5074
Merge pull request #1201 from facebook/rfcUpdate 
updated Zstandard frame format
 2018-06-22 11:53:50 -07:00
Yann Collet
c1e6347717 fixed minor typos, detected by @terrelln 2018-06-21 18:08:11 -07:00
Yann Collet
7639db939f updated Zstandard frame format 
adding clarifications from IETF RFC DISCUSS.
 2018-06-21 17:55:55 -07:00
Yann Collet
2d76defbfe grouped all histogram functions into hist.c 
renamed functions with HIST_* prefix
 2018-06-13 19:49:31 -04:00
Yann Collet
a57b4df85f removed literalCompression directive 
in this version, literal compression is always disabled for ZSTD_fast strategy.

Performance parity between ZSTD_compress_advanced() and ZSTD_compress_generic()
 2018-06-07 15:24:12 -07:00
Yann Collet
24319975b6 bumped version number to v1.3.5 2018-06-06 15:51:55 -07:00
Yann Collet
830fd4468f better make -j all behavior 
avoid concurrent compilation of libzstd
 2018-06-06 12:47:16 -07:00
Yann Collet
a4c9c4defe update Zstandard format specification 
answering a few questions from IETF RFC Discuss stage.
 2018-05-31 10:47:44 -07:00
Nick Terrell
73f4c890cd Clarify what happens when Number_of_Sequences == 0 2018-05-22 16:12:33 -07:00
Yann Collet
82ad249645 Clarifications of Zstandard format specification 
from IETF RFC review
 2018-04-30 12:36:55 -07:00
Yann Collet
12f60b8c98 clarified documentation related to refPrefix() 2018-04-25 10:17:06 -07:00
Yann Collet
ace856a835 updated documentation of streaming compression api 2018-04-24 14:44:27 -07:00
Nick Terrell
6bb6e6178a Add zstdmt long range mode graphs 2018-03-23 14:06:05 -07:00
Yann Collet
d6c6b62958 updated graph for dictionary compression 2018-03-22 18:44:56 -07:00
Yann Collet
184e1c8b8c updated benchmark figures 2018-03-22 18:22:10 -07:00
Yann Collet
b7b80e1569 fixed paramgrill 2018-03-21 16:09:15 -07:00
Yann Collet
a99c4a3621 Merge branch 'dev' into advancedDecompress 2018-03-21 06:08:28 -07:00
Yann Collet
6873fec658 changed dictMore for dictContentType 
which seems clearer to describe what the variable/argument is about.
 2018-03-20 15:13:14 -07:00
Yann Collet
31b54b6eea updated ZSTD_initStaticDDict() prototype 
can also specify dictContentType.
 2018-03-20 14:52:02 -07:00
Yann Collet
353117c5d7 implemented ZSTD_DCtx_loadDictionary*() 
this required updating ZSTD_createDDict_advanced()
to accept a dictContentType parameter (raw, full, auto).
 2018-03-20 13:40:29 -07:00
Yann Collet
c8b3d389fd updated CCtxParams API 
to respect naming convention :
ZSTD_CCtxParams_*()
 2018-03-19 15:07:26 -07:00
Yann Collet
97816400ca added /contrib projects to make all 2018-03-15 16:40:14 -07:00
Yann Collet
2291b85a1e changed ZSTD_p_literalCompression into ZSTD_p_compressLiterals 
prefer verb+object construction
 2018-03-12 11:44:10 -07:00
Yann Collet
a57d43d4d4 updated documentation of targetLength 2018-03-12 11:35:01 -07:00
Yann Collet
564cb1b640 update doc/README.md on provided tools to test 3rd party implementations 2018-02-27 17:37:05 -08:00
Yann Collet
9945e60ac4 Merge branch 'dev' into flexibleLevel 2018-02-10 11:54:49 -08:00
Yann Collet
209df52ba2 Changed nbThreads for nbWorkers 
This makes it easier to explain that nbWorkers=0 --> single-threaded mode,
while nbWorkers=1 --> asynchronous mode (one mode thread on top of the "main" caller thread).
No need for an additional asynchronous mode flag.
nbWorkers>=2 works the same as nbThreads>=2 previously.
 2018-02-01 19:29:30 -08:00
Yann Collet
823a28a1f4
Merge pull request #1000 from facebook/progressiveFlush 
Progressive flush
 2018-01-30 22:49:47 -08:00
Yann Collet
b173b8d8da updated zstd api manual 2018-01-30 15:05:12 -08:00
Yann Collet
2cb0740b6b zstdmt: changed naming convention 
to avoid confusion with blocks.

also:
- jobs are cut into chunks of 512KB now, to reduce nb of mutex calls.
- fix function declaration ZSTD_getBlockSizeMax()
- fix outdated comment
 2018-01-30 14:43:36 -08:00
Yann Collet
9f8ed23b5b bumped version number to v1.3.4 
also added a paragraph on using compression level with training mode
as this is a recurrent question (see for example #1004)
 2018-01-27 22:23:26 -08:00
Yann Collet
8e128eaf05 zstdmt : refactor job members 
grouped by sharing properties
 2018-01-26 10:20:38 -08:00
Yann Collet
997e4d0ccd added POOL_tryAdd() 2018-01-18 14:39:51 -08:00
Yann Collet
394eec697b Introduce ZSTD_getFrameProgression() 
Produces 3 statistics for ongoing frame compression :
- ingested
- consumed (effectively compressed)
- produced

Ingested can be larger than consumed due to buffering effect.

For the time being, this patch mostly fixes the % ratio issue,
since it computes consumed / produced,
instead of ingested / produced.

That being said, update is not "smooth",
because on a slow enough setting,
fileio spends most of its time waiting for a worker to complete its job.

This could be improved thanks to more granular flushing
i.e. start flushing before ongoing job is fully completed.
 2018-01-17 16:39:02 -08:00
Shawn Landden
914d983879
fix unbounded range 
I think you meant 8 MiB or smaller, instead of an unbounded (and illogical) range
 2017-12-21 16:15:12 -08:00
Yann Collet
78de28239f minor readme formatting update 2017-12-15 13:26:39 -08:00
Yann Collet
2cff66b62f version bump to v1.3.3 2017-12-14 16:11:20 -08:00
Yann Collet
bd88f633ac zstreamtest : in -T#s, s considered a suffix meaning "seconds" 
avoid unintentionnally triggering `seedset`,
so that seed gets automatically determined when not set.
 2017-11-27 12:15:23 -08:00