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2098 Commits

Author SHA1 Message Date
Yann Collet
16261e6951 buffer pool can be invoked from multiple threads 2017-07-11 14:14:07 -07:00
Yann Collet
ef0ff7fe7f zstdmt: removed margin for improved memory usage 2017-07-11 08:54:29 -07:00
Yann Collet
4616fad18b improved ZSTDMT_compress() memory usage 
does not need the input buffer for streaming operations

also : reduced a few tests time length
 2017-07-10 17:16:41 -07:00
Yann Collet
670b1fc547 optimized memory usage for ZSTDMT_compress() 
Previously, each job would reserve a CCtx right before being posted.
The CCtx would be "part of the job description",
and only released when the job is completed (aka flushed).
For ZSTDMT_compress(), which creates all jobs first and only join at the end,
that meant one CCtx per job.
The nb of jobs used to be == nb of threads,
but since latest modification,
which reduces the size of jobs in order to spread the load of difficult areas,
it also increases the nb of jobs for large sources / small compression level.
This resulted in many more CCtx being created.

In this new version, CCtx are reserved within the worker thread.
It guaranteea there cannot be more CCtx reserved than workers (<= nb threads).

To do that, it required to make the CCtx Pool multi-threading-safe :
it can now be called from multiple threads in parallel.
 2017-07-10 16:30:55 -07:00
Yann Collet
3510efb02d fix : custom allocator correctly propagated to child contexts 2017-07-10 14:21:40 -07:00
Yann Collet
88da8f1816 fix : propagate custom allocator to ZSTDMT though ZSTD_CCtx_setParameter() 
also : compile fuzzer with MT enabled
 2017-07-10 14:02:33 -07:00
Yann Collet
e32fb0c1fe added ZSTD_sizeof_CCtx() test 2017-07-10 12:29:57 -07:00
Yann Collet
40156a4967 bumped version nb to v1.3.1 2017-07-08 04:55:09 -07:00
Yann Collet
0f4fc6c20a fixed several conversion warnings 2017-07-07 17:13:12 -07:00
Yann Collet
9bde061a0b fixed minor Visual compilation limitation 2017-07-07 16:14:17 -07:00
Yann Collet
593d517ebf fixed minor cast warning 2017-07-07 16:09:47 -07:00
Yann Collet
ead4dd48f6 new field frameHeader.headerSize 2017-07-07 15:51:24 -07:00
Yann Collet
46396523c0 ZSTD_getFrameHeader : control of windowSize limits is delegated to caller 
Extracting frame header is a separate operation.
It's now possible to get frame header, whatever the window size set in it.
 2017-07-07 15:32:12 -07:00
Yann Collet
990449b89d new field : ZSTD_frameHeader.frameType 
Makes frame type (zstd,skippable) detection more straighforward.
ZSTD_getFrameHeader set frameContentSize=ZSTD_CONTENTSIZE_UNKNOWN to mean "field not present"
 2017-07-07 15:21:35 -07:00
Yann Collet
e622330a3b extended frameHeader.windowSize to unsigned long long 2017-07-07 14:19:01 -07:00
Yann Collet
f04deff4fc fixed #718, reported by @GregSlazinski, solution suggested by @mcmilk 2017-07-06 01:42:46 -07:00
Yann Collet
d75c0e71c4 minor code refactoring 2017-07-05 18:10:07 -07:00
Yann Collet
49af41820d clarified status of zstdmt_compress.h API 2017-07-05 17:21:13 -07:00
Yann Collet
27e883371d fixed wrong assert() condition 
A single job created by ZSTDMT_compress() can be < 256KB
if data to compress is < 256 KB
(in which case it is delegated to single thread mode)
 2017-07-04 19:33:16 -07:00
Yann Collet
2cb9774f5e more precise estimation of amount to flush at end of stream (single thread mode) 
also : can use DEBUGLEVEL variable in /tests
 2017-07-04 12:39:26 -07:00
Yann Collet
6383372dec fixed : 0-copy in NULL is UB 2017-07-04 10:36:41 -07:00
Yann Collet
5051dd39ca Merge pull request #743 from facebook/fullbench 
compress_generic() automatic optimization opportunities
 2017-07-03 21:26:38 -07:00
Yann Collet
2de2396a36 refactor ZSTDMT_compress() 2017-07-03 16:23:36 -07:00
Yann Collet
2084b041f4 fixed comments 2017-07-03 15:52:19 -07:00
Yann Collet
5a77361595 fixed wrong function name in comment 2017-07-03 15:21:24 -07:00
Nick Terrell
c80fc50a8d [libzstd] Fix memcpy() on potential NULL source 
* `ZSTD_decompressStream_generic()` `ip` may be `NULL` for one of the calls
  to `memcpy()`
* Assert the source is not `NULL` for calls to `memcpy()` where I believe
  the source should not be `NULL`.
 2017-07-03 12:31:55 -07:00
Yann Collet
2485f88bf8 fixed legacy version init bug 2017-07-01 09:09:34 -07:00
cyan4973
21fdf97e00 Merge branch 'dev' into fullbench 2017-07-01 07:01:08 -07:00
cyan4973
1bafe393e4 fix : ZSTDMT_compressStream_generic() can accept NULL input 
also : converge implementations towards new version of ZSTDMT_compressStream_generic()
 2017-07-01 06:59:24 -07:00
Yann Collet
58bd0e70fc fixed : dictionary compression with new advanced API in Multi-threading mode 2017-06-30 16:01:02 -07:00
Yann Collet
d8b33a598d Optimized ZSTDMT single-pass mode speed on large sources 
by ensuring job sizes remain "not too large"
 2017-06-30 15:44:57 -07:00
Yann Collet
d5c046c609 implemented shortcut for zstd_compress_generic() in MT mode 
added ZSTDMT_compress_advanced() API
 2017-06-30 14:51:01 -07:00
Yann Collet
7f40bb1c39 Merge pull request #742 from stellamplau/stack-space 
Reduce stack usage of HUF_readDTableX4 and HUF_readDTableX2
 2017-06-30 14:50:23 -07:00
Stella Lau
32df49e9f8 Fix typo 2017-06-30 12:56:24 -07:00
Stella Lau
b0513b519c Add comment to HUF_DECOMPRESS_WORKSPACE_SIZE 2017-06-30 12:53:56 -07:00
Stella Lau
4c71f59c77 Clarify typedef of rankVal_t and rankValCol_t 2017-06-30 09:52:20 -07:00
Stella Lau
28f711ef95 Rename ALIGN and ALIGN_MASK to HUF_ALIGN and HUF_ALIGN_MASK 2017-06-30 09:38:11 -07:00
Stella Lau
70ad6829e7 Delegate HUF_decompress4X_hufOnly to workspace version 2017-06-29 16:22:32 -07:00
Stella Lau
104c4d57c1 Fix bitshift error 2017-06-29 15:40:49 -07:00
Yann Collet
a3d9926c40 compression optimization opportunity 
switch to single-pass mode directly into output buffer
when outputSize >= ZSTD_compressBound(inputSize).
Speed gains observed with fullbench (~+15% on level 1)
 2017-06-29 14:44:49 -07:00
Stella Lau
fedc94de8c Fix pointer casting warning 2017-06-29 13:04:15 -07:00
Stella Lau
c6a5275a28 Fix alignment warnings with pointer casting 2017-06-29 12:39:34 -07:00
Stella Lau
99e315999c Reduce stack usage of HUF_readDTableX4 and HUF_readDTableX2 2017-06-29 11:49:59 -07:00
Yann Collet
97f2bf66da minor : fix typo 2017-06-29 11:31:40 -07:00
Yann Collet
acbef3decd ZSTD_getFrameContentSize() is promoted to "stable" status 2017-06-29 05:19:51 -07:00
Yann Collet
590937df20 Merge pull request #739 from facebook/refPrefix 
ZSTD_refPrefix
 2017-06-29 04:36:03 -07:00
Yann Collet
811deaea6f Merge pull request #736 from terrelln/cover-default-api 
[zdict] Make COVER the default algorithm
 2017-06-28 20:25:36 -07:00
Yann Collet
037466245f refactor ZSTD_check_compressionLevel_monotonicIncrease_memoryBudget() 
use less macro statements
the initial version was meant to work with STATIC_ASSERT
but since it doesn't work and needs assert()
it's possible to rewrite it using normally compiled code
which is better for compiler.

Downside : the error message is less precise.
There is a DEBUGLOG(3,) to compensate.
 2017-06-28 20:24:08 -07:00
Yann Collet
2bf428df45 Merge branch 'advancedAPI2' into refPrefix 2017-06-28 16:35:49 -07:00
Yann Collet
1ca76039af fixed -Wdeclaration-after-statement 2017-06-28 15:40:21 -07:00