AuroraMiddleware/zstd
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1344 Commits

Author SHA1 Message Date
Sen Huang
bb2df8c499 Trailing whitespace 2019-10-21 15:36:12 -04:00
Sen Huang
cf51501d2f Fix test 2019-10-21 15:36:12 -04:00
Sen Huang
ea3cb6988f Cast to BYTE to appease appveyor 2019-10-21 15:36:12 -04:00
Sen Huang
a727a85a7e merge conflicts round 2 2019-10-21 15:36:12 -04:00
Sen Huang
053a35fd64 formatting 2019-10-21 15:35:33 -04:00
Sen Huang
3fa4daaa55 Fix error 2019-10-21 15:35:33 -04:00
Sen Huang
3328348c63 Add compressionlevel to cdict 2019-10-21 15:32:39 -04:00
Yann Collet
fb77afc626
Merge pull request #1760 from bimbashrestha/extract_sequences_api 
Adding api for extracting sequences from seqstore
 2019-10-10 13:11:18 -07:00
Bimba Shrestha
36528b96c4 Manually moving instead of memcpy on decoder and using genBuffer() 2019-10-03 09:26:51 -07:00
Bimba Shrestha
61ec4c2e7f Cleaning sequence parsing logic 2019-10-03 06:42:40 -07:00
Bimba Shrestha
c04245b257 Replacing assert with memory_allocation error code throw 2019-09-23 15:42:16 -07:00
Bimba Shrestha
be0bebd24e Adding test and null check for malloc 2019-09-23 15:08:18 -07:00
Nick Terrell
5cb7615f1f Add UNUSED_ATTR to ZSTD_storeSeq() 2019-09-20 21:37:13 -07:00
Nick Terrell
5dc0a1d659 HINT_INLINE ZSTD_storeSeq() 
Clang on Mac wasn't inlining `ZSTD_storeSeq()` in level 1, which was
causing a 5% performance regression. This fixes it.
 2019-09-20 16:39:27 -07:00
Bimba Shrestha
f3c4fd17e3 Passing in dummy dst buffer of compressbound(srcSize) 2019-09-20 15:50:58 -07:00
Nick Terrell
44c65da97e Remove literals overread in ZSTD_storeSeq() for ~neutral perf 2019-09-20 12:23:25 -07:00
Nick Terrell
fde217df04 Fix bounds check in ZSTD_storeSeq() 2019-09-20 08:25:12 -07:00
Nick Terrell
67b1f5fc72 Fix too strict assert 2019-09-20 01:23:35 -07:00
Nick Terrell
ddab2a94e8 Pass iend into ZSTD_storeSeq() to allow ZSTD_wildcopy() 2019-09-20 00:56:20 -07:00
Nick Terrell
efd37a64ea Optimize decompression and fix wildcopy overread 
* Bump `WILDCOPY_OVERLENGTH` to 16 to fix the wildcopy overread.
* Optimize `ZSTD_wildcopy()` by removing unnecessary branches and
  unrolling the loop.
* Extract `ZSTD_overlapCopy8()` into its own function.
* Add `ZSTD_safecopy()` for `ZSTD_execSequenceEnd()`. It is
  optimized for single long sequences, since that is the important
  case that can end up in `ZSTD_execSequenceEnd()`. Without this
  optimization, decompressing a block with 1 long match goes
  from 5.7 GB/s to 800 MB/s.
* Refactor `ZSTD_execSequenceEnd()`.
* Increase the literal copy shortcut to 16.
* Add a shortcut for offset >= 16.
* Simplify `ZSTD_execSequence()` by pushing more cases into
  `ZSTD_execSequenceEnd()`.
* Delete `ZSTD_execSequenceLong()` since it is exactly the
  same as `ZSTD_execSequence()`.

clang-8 seeds +17.5% on silesia and +21.8% on enwik8.
gcc-9 sees +12% on silesia and +15.5% on enwik8.

TODO: More detailed measurements, and on more datasets.

Crdit to OSS-Fuzz for finding the wildcopy overread.
 2019-09-19 21:07:14 -07:00
Bimba Shrestha
ae6d0e64ae Addressing comments 2019-09-19 15:25:20 -07:00
Yann Collet
bfff5b30a4
Merge pull request #1756 from mgrice/dev 
Improvements in zstd decode performance
 2019-09-18 11:35:50 -07:00
Yann Collet
243200e5bf minor refactor of ZSTD_fast 
- reduced variables lifetime
- more accurate code comments
 2019-09-17 14:02:57 -07:00
Bimba Shrestha
76fea3fb99 Resolving appveyor test failure implicit conversion 2019-09-16 14:02:23 -07:00
Bimba Shrestha
a874435478
Merge branch 'dev' into extract_sequences_api 2019-09-16 13:29:59 -07:00
Bimba Shrestha
bff6072e3a Bailing early when collecting sequences and documentation 2019-09-16 08:26:21 -07:00
W. Felix Handte
20c69077d1 Shrink Table Valid End During Alloc Alignment / Phase Change 2019-09-11 17:14:59 -04:00
W. Felix Handte
51d90668ba Add Assertions to Confirm that Workspace Pointers are Correctly Ordered 2019-09-11 17:14:59 -04:00
W. Felix Handte
a10c191613 __msan_poison() Workspace When Preparing for Re-Use 2019-09-11 17:14:45 -04:00
W. Felix Handte
7c57e2b9ca Zero h3size When h3log is 0 
This led to a nasty edgecase, where index reduction for modes that don't use
the h3 table would have a degenerate table (size 4) allocated and marked clean,
but which would not be re-indexed.
 2019-09-11 13:14:26 -04:00
W. Felix Handte
bc020eec92 Also Shrink Clean Table Area When Reducing Indices 2019-09-11 11:40:57 -04:00
W. Felix Handte
1999b2ed9b Update DEBUGLOG Statements 2019-09-11 11:21:00 -04:00
W. Felix Handte
13e29a56de Shrink Clean Table Area When Copying Table Contents into Context 
The source matchState is potentially at a lower current index, which means
that any extra table space not overwritten by the copy may now contain
invalid indices. The simple solution is to unconditionally shrink the valid
table area to just the area overwritten.
 2019-09-11 11:18:45 -04:00
W. Felix Handte
edb3ad053e Comments 2019-09-10 18:25:45 -04:00
W. Felix Handte
f31ef28ff8 Only Reset Indexing in ZSTD_resetCCtx_internal() When Necessary 2019-09-10 18:25:45 -04:00
W. Felix Handte
9968a53e91 Remove No-Longer-Used Continuation Functions 2019-09-10 18:25:45 -04:00
W. Felix Handte
1b28e80416 Remove Fast Continue Path in ZSTD_resetCCtx_internal() 2019-09-10 18:25:45 -04:00
W. Felix Handte
ad16eda5e4 ZSTD_reset_matchState Optionally Doesn't Restart Indexing 2019-09-10 18:25:45 -04:00
W. Felix Handte
5b10bb5ec3 Rename ZSTD_compResetPolicy_e Values and Add Comment 2019-09-10 18:25:45 -04:00
W. Felix Handte
0492b9a9ec Accept ZSTD_indexResetPolicy_e Param in ZSTD_reset_matchState() 2019-09-10 18:25:45 -04:00
W. Felix Handte
14c5471d5e Introduce ZSTD_indexResetPolicy_e Enum 2019-09-10 18:25:45 -04:00
W. Felix Handte
17b6da2e0f Track Usable Table Space in Compression Workspace 2019-09-10 18:25:37 -04:00
Yann Collet
22bd158e0f
Merge pull request #1712 from felixhandte/workspace-efficiency-2 
Allocate Internal Buffers via Workspace Abstraction
 2019-09-10 15:20:29 -07:00
Bimba Shrestha
1407919d13 Addressing comments on parsing 2019-09-10 15:10:50 -07:00
Bimba Shrestha
47199480da Cleaning up parsing per suggestion 2019-09-10 13:18:59 -07:00
W. Felix Handte
a9d373f093 Remove Empty lib/compress/zstd_cwksp.c 2019-09-10 16:03:13 -04:00
Yann Collet
41416f0927
Merge pull request #1773 from bimbashrestha/rle_first_block_decompression_fix 
Removing redundant condition in decompression, making first block rle…
 2019-09-10 11:17:29 -07:00
Bimba Shrestha
e3c5825918 Fizing litLength == 0 case 2019-09-10 10:38:13 -07:00
Bimba Shrestha
9e7bb55e14 Addressing comments 2019-09-09 20:04:46 -07:00
W. Felix Handte
81208fd7c2 Forward Declare ZSTD_cwksp_available_space to Fix Build 2019-09-09 19:10:09 -04:00