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1191 Commits (18b3ce606435c665d442ef7150812fce30c66817)

Author SHA1 Message Date
Przemyslaw Skibinski 4da53219a0 zstd Manual updated to 1.1.2 2016-12-07 11:18:40 +01:00
Yann Collet 379908be3d fixed zstd.h for manual 2016-12-06 10:36:15 -08:00
Yann Collet 9dfd0af164 ZBUFF_ as a wrapper to ZSTD streaming API. 2016-12-06 17:16:41 +01:00
Yann Collet 825dffbc43 moved zbuff source files into lib/deprecated 2016-12-05 19:28:19 -08:00
Yann Collet 8f8e2b0b4a fixed initialization warning 2016-12-05 18:00:50 -08:00
Yann Collet e7a41a5955 added : dictID retrieval functions. 
added : unit tests for dictID retrieval functions
 2016-12-05 16:21:06 -08:00
Yann Collet 9ffbeea875 API : changed : streaming decompression : implicit reset on starting new frames 2016-12-02 18:37:38 -08:00
Yann Collet 2238312c2f fix dict loading 2016-12-02 11:36:11 -08:00
Przemyslaw Skibinski 821bf1febc fixed Doxygen trailing comment 2016-12-02 16:13:41 +01:00
Yann Collet b89af20353 reduced table sizes for HUF_readDTableX4 2016-12-01 18:24:59 -08:00
Yann Collet a0d742b1e4 introduced HUF_buildCTable_wksp(), to reduce stack memory usage 2016-12-01 17:47:30 -08:00
Yann Collet 643d9a234b replaced usage of FSE_buildCTable by FSE_buildCTable_wksp, using less stack space in the process 2016-12-01 16:24:04 -08:00
Yann Collet e928f7e16d introduced ext_wksp variants of count to reduce stack memory usage 2016-12-01 16:13:35 -08:00
Yann Collet 979cab412b fixed some minor visual silent cast warnings. 
introduced FSE_count_parallel_wksp().
 2016-11-30 18:10:38 -08:00
Yann Collet 5e00b848a8 FSE_compress_wksp() uses less stack space 2016-11-30 16:46:13 -08:00
Yann Collet d79a9a00d9 Introduced FSE_compress_wksp() and FSE_buildCTable_wksp() to reduce stack memory usage 2016-11-30 15:52:20 -08:00
Yann Collet 766431909f introduced FSE_decompress_wksp(), to use less stack space 2016-11-30 12:36:45 -08:00
Yann Collet 95eb43be09 updated pkg config file 2016-11-30 11:06:58 -08:00
Yann Collet 42247705a3 Merge pull request #461 from obache/neatsrc/pkgconfig 
libzstd.pc.in: Change to use variables for libdir and includedir
 2016-11-30 20:03:42 +01:00
Yann Collet ff504de391 minor decompression speed improvement 2016-11-29 17:42:46 -08:00
Yann Collet 25f46dcc0f minor const 2016-11-29 16:59:27 -08:00
Yann Collet a56ac2815c restored normal decoder speed 2016-11-29 15:30:23 -08:00
Yann Collet 37870d7a66 fixed minor visual warning 2016-11-29 14:31:57 -08:00
Yann Collet 013a2b58ae Merge pull request #464 from terrelln/guards 
Fix ZSTD_STATIC_LINKING_ONLY with double include
 2016-11-29 23:06:10 +01:00
Yann Collet 167c494748 Merge branch 'dev' of github.com:facebook/zstd into dev 2016-11-29 14:05:15 -08:00
Yann Collet 4f5350f610 long matches support overflow 2016-11-29 13:12:24 -08:00
Nick Terrell 05c00f2ff7 Fix ZSTD_STATIC_LINKING_ONLY with double include 2016-11-29 11:54:39 -08:00
OBATA Akio c53eea7c1a libzstd.pc.in: Change to use variables for libdir and includedir 2016-11-29 16:47:53 +09:00
Yann Collet 52e136ed3d long decoder compatible with round and separate buffers 2016-11-28 19:59:11 -08:00
Yann Collet ce3527ca0c combined normal and long decoder 2016-11-28 18:38:52 -08:00
Yann Collet 8993bee997 restored normal mode 2016-11-28 16:11:30 -08:00
Yann Collet 764e70a4f3 added decodeSequencesLong 2016-11-28 15:50:16 -08:00
Yann Collet 73f88a66f1 added prefetch 2016-11-23 15:43:30 -08:00
Yann Collet 50524bf0da delayed decompression 2016-11-23 15:11:07 -08:00
Przemyslaw Skibinski fc4193bda5 fixed g++ warnings 2016-11-23 18:17:18 +01:00
Przemyslaw Skibinski 9ca65af810 zstd_opt.h: improved price function 2016-11-23 17:22:54 +01:00
Przemyslaw Skibinski ad3e94512c fixed warnings from static analyzer in zstd_opt.h 2016-11-21 20:22:12 +01:00
Przemyslaw Skibinski eec700a3b7 exclude zbuff_compress.c and zbuff_decompress.c 2016-11-21 14:34:03 +01:00
Przemyslaw Skibinski 62d19a6f39 lib\README.md: added Using MinGW+MSYS to create DLL 2016-11-21 14:22:08 +01:00
Przemyslaw Skibinski b85f767743 files to generate ZSTD Windows binary package 2016-11-21 14:10:55 +01:00
Przemyslaw Skibinski 8bb86e330b create DLL with Windows 2016-11-21 12:51:01 +01:00
Przemyslaw Skibinski 93a09eedf1 added libzstd.def 2016-11-21 12:33:27 +01:00
Przemyslaw Skibinski 5a17223691 Merge remote-tracking branch 'refs/remotes/facebook/dev' into dev11 2016-11-18 11:47:01 +01:00
Przemyslaw Skibinski 3d18088b38 updated windres 2016-11-17 18:04:41 +01:00
Yann Collet 0d761dbe95 Merge pull request #453 from inikep/dev11 
fullbench-dll
 2016-11-16 15:45:30 -08:00
Yann Collet 52afb3993e zbuff API now generates deprecation warnings 2016-11-16 08:50:54 -08:00
Przemyslaw Skibinski 179555c1d1 working fullbench-dll 2016-11-15 18:05:46 +01:00
Nick Terrell 4359d21ad7 Merge two memset() calls into one 2016-11-14 17:52:51 -08:00
Nick Terrell 24701de877 Fix uninitialized memory read 2016-11-14 13:57:05 -08:00
Yann Collet 8e4901eccd removed zbuff.h from include installation 2016-11-08 15:45:39 -08:00
Yann Collet fd3be6bc97 bump version number to 1.1.2 2016-11-07 14:35:41 -08:00
Nick Terrell dc904ad17b Fix bug in zstd v0.{5, 6} dictionary decompression 
Introduced by bb68062c59.
 2016-11-04 16:18:59 -07:00
Przemyslaw Skibinski 38b590ad69 Merge remote-tracking branch 'refs/remotes/facebook/dev' into dev11 
# Conflicts:
#	lib/Makefile
 2016-11-04 10:10:54 +01:00
Yann Collet 407a11f63e fixed Visual compatibility 2016-11-03 15:52:01 -07:00
Yann Collet 11812260d1 Merge pull request #439 from terrelln/dev 
ZSTD_compress_usingDict() specify dict == NULL
 2016-11-03 14:15:36 -07:00
Nick Terrell c8a9ac312b Fix dynamic libzstd symlinks 2016-11-03 12:32:48 -07:00
Przemyslaw Skibinski 3a415594b1 fixed MinGW compilation 2016-11-03 12:59:20 +01:00
Yann Collet 7347869fb6 fixed make install 2016-11-02 22:28:37 -07:00
Nick Terrell d82efd8a70 ZSTD_compress_usingDict() when dict gets loaded 
Specify that when `dict == NULL || dictSize < 8` no dictionary
gets loaded.
Also add some periods.
 2016-11-02 18:07:16 -07:00
Yann Collet 179b19776f fileio.c does no longer need ZSTD_LEGACY_SUPPORT, and does no longer depend on zstd_legacy.h 
Added : ZSTD_isFrame() in experimental section
 2016-11-02 17:30:49 -07:00
Yann Collet f3f13211ae Fix #419 : no warning when setting custom LDFLAGS 2016-11-02 17:02:45 -07:00
Yann Collet 0a5a5fb7fd Fix #418 : printing selected segments in zdict debug mode can segfault with certain pathological patterns 2016-11-02 13:57:55 -07:00
Yann Collet 31e660e7aa more accurate default maximum window size 2016-10-29 03:56:45 -07:00
Yann Collet 2115724c22 Merge pull request #430 from terrelln/exec-sequences 
ZSTD_execSequence() accepts match in last 7 bytes
 2016-10-28 10:45:05 -07:00
Nick Terrell 10bfd0c0d5 Fix ZSTD_execSequence() performance regression 
Commit ae1cb3b3d0 caused the regression.
It is an instruction alignment issue, because if it is `U64 i` instead
of `U32 i`, the regression returns.  This patch fixes the regression
in gcc, but only gets some of the clang performance back.

Benchmarks:
Run on `silesia.tar`.  I only show levels 1-5 because the performance
regression was uniform across all levels.  I did one run on levels
1-19 and it looked good.

| Build | Level | Before | While | After |
|-------|-------|-------:|------:|------:|
| gcc   |     1 |  931.4 | 904.4 | 932.8 |
| gcc   |     2 |  849.1 | 822.6 | 851.2 |
| gcc   |     3 |  815.6 | 790.6 | 818.9 |
| gcc   |     4 |  794.1 | 770.7 | 798.0 |
| gcc   |     5 |  785.7 | 760.7 | 788.8 |
| clang |     1 |  705.5 | 683.2 | 693.8 |
| clang |     2 |  670.0 | 649.2 | 660.7 |
| clang |     3 |  659.6 | 639.8 | 651.4 |
| clang |     4 |  652.5 | 634.7 | 645.9 |
| clang |     5 |  646.9 | 625.5 | 637.7 |
 2016-10-27 16:19:57 -07:00
Yann Collet ee5b725823 ZSTD_initCStream() optimization : do not allocate a CDict when no dictionary used 2016-10-27 14:20:55 -07:00
Nick Terrell eb7873a048 ZSTD_execSequence() accepts match in last 7 bytes 
The zstd reference compressor will not emit a match in the last 7
bytes of a block.  The decompressor will also not accept a match
in the last 7 bytes.  This patch makes the decompressor accept a
match in the last 7 bytes.
 2016-10-25 21:24:15 -07:00
Yann Collet 335ad5d4d4 added ZSTD_initDStream_usingDDict() . 
slightly optimized ZSTD_initDStream() when no dictionary .
fixed ZSTD_sizeof_CStream() .
 2016-10-25 17:47:02 -07:00
Yann Collet 9516234e67 first sketch for ZSTD_initCStream_usingCDict() 2016-10-25 16:19:52 -07:00
Yann Collet 62d9a7ddfd Merge pull request #429 from inikep/btopt2 
Btopt2
 2016-10-25 14:48:43 -07:00
Przemyslaw Skibinski 5c5f01f3da added ZSTD_btopt2 strategy 2016-10-25 12:25:07 +02:00
Yann Collet 7b5948cca7 Merge pull request #426 from terrelln/fixes 
Fix various {A, M}SAN bugs
 2016-10-24 23:42:26 -07:00
Yann Collet 37d130031d updated comments on context re-use 2016-10-24 17:22:12 -07:00
Nick Terrell b2c39a22b0 Fix compiler narrowing warning 2016-10-24 14:50:13 -07:00
Nick Terrell f698ad6deb Merge remote-tracking branch 'upstream/dev' into fixes 
* upstream/dev:
  added doc\zstd_manual.html
  added contrib\gen_html
  zstd_compression_format.md moved to doc/
  Fix small bug in ZSTD_execSequence()
  improved ZSTD_compressBlock_opt_extDict_generic
  protect ZSTD_decodeFrameHeader() from invalid usage, as suggested by @spaskob
  zstd_opt.h: small improvement in compression ratio
  improved dicitonary segment merge
  use implicit rules to compile zstd_decompress.c
  detect early impossible decompression scenario in legacy decoder v0.5
  no repeat mode in legacy v0.5
  fixed invalid invocation of dictionary in legacy decoder v0.5
  fix edge case
  fix command line interpretation
  fixed minor corner case
  zstd.h: added the Introduction section
  fixed clang 3.5 warnings
  zstd.h: updated comments
 2016-10-24 13:10:13 -07:00
Yann Collet 4239a207dd Merge pull request #425 from inikep/dev11 
Doc
 2016-10-24 11:11:40 -07:00
Nick Terrell f9c9af3c2e Reject dictionaries with incomplete entropy tables 
If a dictionary specifies that a symbol has probability zero in its
`matchLength`, `literalLength`, or `offset` FSE table, but the symbol
appears when compressing input, the compressor fails.

Ensure that dictionaries support all `matchLength`, and `literalLength`
codes.  They must also support all of the `offset` codes required to
represent every possible offset that can appear in the first block.
 2016-10-24 10:42:44 -07:00
Przemyslaw Skibinski 984b66cd72 added contrib\gen_html 2016-10-24 15:59:51 +02:00
Przemyslaw Skibinski 3ee94a7600 zstd_compression_format.md moved to doc/ 2016-10-24 15:58:07 +02:00
Yann Collet 97611611a3 Merge pull request #423 from terrelln/exec-seq-patch 
Fix small bug in ZSTD_execSequence()
 2016-10-21 17:02:06 -07:00
Nick Terrell ae1cb3b3d0 Fix small bug in ZSTD_execSequence() 
`memmove(op, match, sequence.matchLength)` is not the desired behavior.
Overlap is allowed, and handled as if we did `*op++ = *match++`, which
is not how `memmove()` handles overlap.

Only triggered if both of the following conditions are met:
* The match spans extDict & currentPrefixSegment
* `oLitEnd <= oend_w < oLitEnd + length1 < oMatchEnd <= oend`.

These two conditions imply that the block is less than 15 bytes long.
This bug isn't triggered by the streaming API, because it allocates
enough space for the window size + the block size, so there cannot be
a match that is within 8 bytes of the end and overlaps with itself.
It cannot be triggered by the block decompression API because all of
the decompressed data is in the currentPrefixSegment.

Introduced by commit 7158584399
 2016-10-21 12:13:44 -07:00
Przemyslaw Skibinski 4732074a71 improved ZSTD_compressBlock_opt_extDict_generic 2016-10-21 11:19:00 +02:00
Yann Collet da3bd8b6de protect ZSTD_decodeFrameHeader() from invalid usage, as suggested by @spaskob 2016-10-20 20:11:00 -07:00
Przemyslaw Skibinski d365ae3497 zstd_opt.h: small improvement in compression ratio 2016-10-20 11:49:02 +02:00
Przemyslaw Skibinski 575ab00db7 Merge remote-tracking branch 'refs/remotes/facebook/dev' into dev11 2016-10-20 11:01:52 +02:00
Nick Terrell d760529a05 Fix stack buffer overrun when weightTotal == 0 
If `weightTotal == 0`, then `BIT_highbit32(weightTotal)` is
undefined behavior in the case that it calls `__builtin_clz()`.
If `tableLog == HUF_TABLELOG_ABSOLUTEMAX` then we will access one
byte beyond the end of the buffer.
 2016-10-19 11:39:11 -07:00
Nick Terrell bb68062c59 Unitialized memory read in ZSTD_decodeSeqHeaders() 
Caused by two things:
1. Not checking that `ip` is in range except for the first byte.
2. `ZSTDv0{5,6}_decodeLiteralsBlock()` could return a value larger than `srcSize`.
 2016-10-18 16:41:33 -07:00
Yann Collet 52c1bf93fe improved dicitonary segment merge 2016-10-18 16:34:58 -07:00
Nick Terrell 7b06ad7a05 Backport fix from commit 125d817 
This fixes a read of unitialized memory.
Full commit hash: 125d81774f.
 2016-10-18 14:52:34 -07:00
Nick Terrell f45b157d95 Backport fix from commit 9e8b09a 
Fixes uninitialized memory reads.
Full commit hash: 9e8b09a7bd
 2016-10-18 14:22:49 -07:00
Yann Collet f7906d5955 detect early impossible decompression scenario in legacy decoder v0.5 2016-10-18 13:48:32 -07:00
Yann Collet 9313c8d953 no repeat mode in legacy v0.5 2016-10-18 13:36:15 -07:00
Yann Collet 83d7bdee4b fixed invalid invocation of dictionary in legacy decoder v0.5 2016-10-18 12:25:43 -07:00
Yann Collet 197a55ee7b fix edge case 2016-10-18 11:27:52 -07:00
Nick Terrell fd98087047 Fix stack buffer overflow in HUF_readCTable() 
If `w ==0` on line 153, then `CTable[n].nbBits == tableLog + 1`.
Then `nbPerRank[CTable[n].nbBits]` and `valPerRank[CTable[n].nbBits]`
are stack buffer overflows.
 2016-10-17 18:16:59 -07:00
Yann Collet 06573e17be fixed minor corner case 2016-10-17 17:28:28 -07:00
Nick Terrell bfd943ace5 Fix buffer overrun in ZSTD_loadDictEntropyStats() 
The table log set by `FSE_readNCount()` was not checked in
`ZSTD_loadDictEntropyStats()`.  This caused `FSE_buildCTable()`
to stack/heap overflow in a few places.

The benchmarks look good, there is no obvious compression performance regression:

  > ./zstds/zstd.opt.0 -i10 -b1 -e10 ~/bench/silesia.tar
   1#silesia.tar       : 211988480 ->  73656930 (2.878), 271.6 MB/s , 716.8 MB/s
   2#silesia.tar       : 211988480 ->  70162842 (3.021), 204.8 MB/s , 671.1 MB/s
   3#silesia.tar       : 211988480 ->  66997986 (3.164), 156.8 MB/s , 658.6 MB/s
   4#silesia.tar       : 211988480 ->  66002591 (3.212), 136.4 MB/s , 665.3 MB/s
   5#silesia.tar       : 211988480 ->  65008480 (3.261),  98.9 MB/s , 647.0 MB/s
   6#silesia.tar       : 211988480 ->  62979643 (3.366),  65.2 MB/s , 670.4 MB/s
   7#silesia.tar       : 211988480 ->  61974560 (3.421),  44.9 MB/s , 688.2 MB/s
   8#silesia.tar       : 211988480 ->  61028308 (3.474),  32.4 MB/s , 711.9 MB/s
   9#silesia.tar       : 211988480 ->  60416751 (3.509),  21.1 MB/s , 718.1 MB/s
  10#silesia.tar       : 211988480 ->  60174239 (3.523),  22.2 MB/s , 721.8 MB/s

  > ./compress_zstds/zstd.opt.1 -i10 -b1 -e10 ~/bench/silesia.tar
   1#silesia.tar       : 211988480 ->  73656930 (2.878), 273.8 MB/s , 722.0 MB/s
   2#silesia.tar       : 211988480 ->  70162842 (3.021), 203.2 MB/s , 666.6 MB/s
   3#silesia.tar       : 211988480 ->  66997986 (3.164), 157.4 MB/s , 666.5 MB/s
   4#silesia.tar       : 211988480 ->  66002591 (3.212), 132.1 MB/s , 661.9 MB/s
   5#silesia.tar       : 211988480 ->  65008480 (3.261),  96.8 MB/s , 641.6 MB/s
   6#silesia.tar       : 211988480 ->  62979643 (3.366),  63.1 MB/s , 677.0 MB/s
   7#silesia.tar       : 211988480 ->  61974560 (3.421),  44.3 MB/s , 678.2 MB/s
   8#silesia.tar       : 211988480 ->  61028308 (3.474),  33.1 MB/s , 708.9 MB/s
   9#silesia.tar       : 211988480 ->  60416751 (3.509),  21.5 MB/s , 710.1 MB/s
  10#silesia.tar       : 211988480 ->  60174239 (3.523),  21.9 MB/s , 723.9 MB/s
 2016-10-17 16:55:52 -07:00
Nick Terrell 4db751668f Fix buffer overrun in ZSTD_loadEntropy() 
The table log set by `FSE_readNCount()` was not checked in
`ZSTD_loadEntropy()`.  This caused `FSE_buildDTable(dctx->MLTable, ...)`
to overwrite the beginning of `dctx->hufTable`.

The benchmarks look good, there is no obvious performance regression:

  > ./zstds/zstd.opt.0 -i10 -b1 -e5 ~/bench/silesia.tar
   1#silesia.tar       : 211988480 ->  73656930 (2.878), 268.2 MB/s , 701.0 MB/s
   2#silesia.tar       : 211988480 ->  70162842 (3.021), 199.5 MB/s , 666.9 MB/s
   3#silesia.tar       : 211988480 ->  66997986 (3.164), 154.9 MB/s , 655.6 MB/s
   4#silesia.tar       : 211988480 ->  66002591 (3.212), 128.9 MB/s , 648.4 MB/s
   5#silesia.tar       : 211988480 ->  65008480 (3.261),  98.4 MB/s , 633.4 MB/s

  > ./zstds/zstd.opt.2 -i10 -b1 -e5 ~/bench/silesia.tar
   1#silesia.tar       : 211988480 ->  73656930 (2.878), 266.1 MB/s , 703.7 MB/s
   2#silesia.tar       : 211988480 ->  70162842 (3.021), 199.0 MB/s , 666.6 MB/s
   3#silesia.tar       : 211988480 ->  66997986 (3.164), 156.2 MB/s , 656.2 MB/s
   4#silesia.tar       : 211988480 ->  66002591 (3.212), 133.2 MB/s , 647.4 MB/s
   5#silesia.tar       : 211988480 ->  65008480 (3.261),  96.3 MB/s , 633.3 MB/s
 2016-10-17 15:51:15 -07:00
Nick Terrell ccfcc643da Check if dict is empty before reading first byte 2016-10-17 11:46:03 -07:00
Yann Collet 2b361cf2f1 minor opt 2016-10-14 16:09:07 -07:00