platform/upstream/lz4.git
6 years agoMerge pull request #573 from laffer1/laffer1-pkgconfig-mnbsd
Yann Collet [Fri, 14 Sep 2018 17:11:49 +0000 (10:11 -0700)]
Merge pull request #573 from laffer1/laffer1-pkgconfig-mnbsd

FIx pkgconfig file installation on MidnightBSD

6 years agoremoved image from repository
Yann Collet [Wed, 12 Sep 2018 17:50:37 +0000 (10:50 -0700)]
removed image from repository

used for v1.8.2 announcement

6 years agofixed NEWS for v1.8.3
Yann Collet [Wed, 12 Sep 2018 17:48:19 +0000 (10:48 -0700)]
fixed NEWS for v1.8.3

6 years agoFIx pkgconfig file installation on MidnightBSD
Lucas Holt [Wed, 12 Sep 2018 01:18:43 +0000 (21:18 -0400)]
FIx pkgconfig file installation on MidnightBSD

6 years agoupdated NEWS for v1.8.3 release
Yann Collet [Tue, 11 Sep 2018 17:15:31 +0000 (10:15 -0700)]
updated NEWS for v1.8.3 release

6 years agoMerge branch 'dev' of github.com:Cyan4973/lz4 into dev
Yann Collet [Tue, 11 Sep 2018 17:01:33 +0000 (10:01 -0700)]
Merge branch 'dev' of github.com:Cyan4973/lz4 into dev

6 years agoMerge pull request #571 from lz4/mflimit
Yann Collet [Tue, 11 Sep 2018 17:01:23 +0000 (10:01 -0700)]
Merge pull request #571 from lz4/mflimit

 clarify constant MFLIMIT

6 years agoclarify constant MFLIMIT
Yann Collet [Tue, 11 Sep 2018 00:36:40 +0000 (17:36 -0700)]
clarify constant MFLIMIT

and separate it from MATCH_SAFEGUARD_DISTANCE.

While both constants have same value,
they do not seve same purpose, hence should not be confused.

6 years agoMerge pull request #569 from lz4/circle2
Yann Collet [Mon, 10 Sep 2018 21:44:15 +0000 (14:44 -0700)]
Merge pull request #569 from lz4/circle2

Migrate CircleCI tests from 1.0 towards 2.0

6 years agoMerge pull request #570 from lz4/partialDecode
Yann Collet [Tue, 11 Sep 2018 16:55:31 +0000 (09:55 -0700)]
Merge pull request #570 from lz4/partialDecode

Partial decode

6 years agofixed minor warning in fuzzer.c
Yann Collet [Mon, 10 Sep 2018 23:48:41 +0000 (16:48 -0700)]
fixed minor warning in fuzzer.c

added a few more comments and assert()

6 years agorestored nullifying output
Yann Collet [Mon, 10 Sep 2018 23:22:16 +0000 (16:22 -0700)]
restored nullifying output

to counter possible (offset==0)

6 years agoremoved temporary debug traces
Yann Collet [Mon, 10 Sep 2018 22:51:53 +0000 (15:51 -0700)]
removed temporary debug traces

6 years agoMerge branch 'dev' into partialDecode
Yann Collet [Mon, 10 Sep 2018 22:44:40 +0000 (15:44 -0700)]
Merge branch 'dev' into partialDecode

6 years agoMerge pull request #569 from lz4/circle2
Yann Collet [Mon, 10 Sep 2018 21:44:15 +0000 (14:44 -0700)]
Merge pull request #569 from lz4/circle2

Migrate CircleCI tests from 1.0 towards 2.0

6 years agoMerge pull request #565 from lz4/lz4f_init
Yann Collet [Mon, 10 Sep 2018 20:11:56 +0000 (13:11 -0700)]
Merge pull request #565 from lz4/lz4f_init

Introduced constants LZ4F_INIT_*

6 years agoswitched to circle 2.0
Yann Collet [Mon, 10 Sep 2018 19:08:51 +0000 (12:08 -0700)]
switched to circle 2.0

using automated config-translation

6 years agoMerge branch 'dev' of github.com:Cyan4973/lz4 into dev
Yann Collet [Mon, 10 Sep 2018 19:02:42 +0000 (12:02 -0700)]
Merge branch 'dev' of github.com:Cyan4973/lz4 into dev

6 years agoMerge pull request #567 from laffer1/dev
Yann Collet [Mon, 10 Sep 2018 18:59:09 +0000 (11:59 -0700)]
Merge pull request #567 from laffer1/dev

Add support for MidnightBSD

6 years agoAdd support for MidnightBSD
Lucas Holt [Sat, 8 Sep 2018 18:46:54 +0000 (14:46 -0400)]
Add support for MidnightBSD

6 years agofixed fuzzer test
Yann Collet [Sat, 8 Sep 2018 01:22:01 +0000 (18:22 -0700)]
fixed fuzzer test

and removed one blind copy, since there is no more guarantee that at least 4 bytes are still available in output buffer

6 years agoupdated function interface documentation
Yann Collet [Fri, 7 Sep 2018 23:21:31 +0000 (16:21 -0700)]
updated function interface documentation

6 years agofirst sketch for a byte-accurate partial decoder
Yann Collet [Fri, 7 Sep 2018 22:44:19 +0000 (15:44 -0700)]
first sketch for a byte-accurate partial decoder

6 years agoupdated API documentation
Yann Collet [Fri, 7 Sep 2018 18:02:42 +0000 (11:02 -0700)]
updated API documentation

6 years agoMerge pull request #563 from lz4/docDict
Yann Collet [Thu, 6 Sep 2018 19:43:29 +0000 (12:43 -0700)]
Merge pull request #563 from lz4/docDict

updated documentation for dictionary compression

6 years agoadded comments on version numbers
Yann Collet [Thu, 6 Sep 2018 00:57:15 +0000 (17:57 -0700)]
added comments on version numbers

6 years agoMerge pull request #564 from lz4/cTime
Yann Collet [Thu, 6 Sep 2018 00:48:40 +0000 (17:48 -0700)]
Merge pull request #564 from lz4/cTime

fixed compression time

6 years agoframeCompress : added an error detection case
Yann Collet [Wed, 5 Sep 2018 23:45:46 +0000 (16:45 -0700)]
frameCompress : added an error detection case

check for potential input data not consumed.

6 years agoMerge branch 'dev' into lz4f_init
Yann Collet [Wed, 5 Sep 2018 23:43:46 +0000 (16:43 -0700)]
Merge branch 'dev' into lz4f_init

6 years agoMerge pull request #548 from cd127/dev
Yann Collet [Wed, 5 Sep 2018 23:35:59 +0000 (16:35 -0700)]
Merge pull request #548 from cd127/dev

Fix bug in frame decompress example

6 years agoIntroduced constants LZ4F_INIT_*
Yann Collet [Wed, 5 Sep 2018 23:04:05 +0000 (16:04 -0700)]
Introduced constants LZ4F_INIT_*

to simplify initialization of lz4frame.h structures.
Partially in response to #546.

6 years agoMerge pull request #556 from kou/add-missing-exeext
Yann Collet [Wed, 5 Sep 2018 22:55:34 +0000 (15:55 -0700)]
Merge pull request #556 from kou/add-missing-exeext

Add missing $(EXT)

6 years agofixed compression time
Yann Collet [Wed, 5 Sep 2018 22:16:03 +0000 (15:16 -0700)]
fixed compression time

displayed at the end (#555)

6 years agoMerge pull request #562 from lz4/roundTrip
Yann Collet [Wed, 5 Sep 2018 21:07:53 +0000 (14:07 -0700)]
Merge pull request #562 from lz4/roundTrip

Round trip test for #560

6 years agoupdated documentation regarding dictionary compression
Yann Collet [Wed, 5 Sep 2018 21:05:08 +0000 (14:05 -0700)]
updated documentation regarding dictionary compression

following suggestion from @stbrumme (#558)

Also : bumped version number, regenerated man page and html doc

6 years agoremoved one assert() condition
Yann Collet [Wed, 5 Sep 2018 18:25:10 +0000 (11:25 -0700)]
removed one assert() condition

which is not correct when using LZ4_HC with dictionary and starting from a low address (<0x10000).

6 years agomade roundTripTest fully general
Yann Collet [Wed, 5 Sep 2018 01:23:21 +0000 (18:23 -0700)]
made roundTripTest fully general

no longer "locked" on level 9

6 years agofixed #560
Yann Collet [Wed, 5 Sep 2018 01:21:40 +0000 (18:21 -0700)]
fixed #560

it was a fairly complex scenario,
involving source files > 64K
and some extraordinary conditions related to specific layout of ranges of zeroes.
and only on level 9.

6 years agofix minor cast warning for C++ compilation
Yann Collet [Wed, 5 Sep 2018 00:37:56 +0000 (17:37 -0700)]
fix minor cast warning for C++ compilation

6 years agonew test program : roundTripTest
Yann Collet [Tue, 4 Sep 2018 23:50:34 +0000 (16:50 -0700)]
new test program : roundTripTest

make a round trip test with arbitrary input file,
generate an `abort()` on error,
to work in tandem with `afl`.

note : currently locked on level 9, to investigate #560.

6 years agoAdd missing $(EXT)
Kouhei Sutou [Mon, 13 Aug 2018 05:17:54 +0000 (14:17 +0900)]
Add missing $(EXT)

6 years agoMerge pull request #553 from mrjoel/mrjoel/cmake-optional-lz4c
Yann Collet [Thu, 9 Aug 2018 21:07:45 +0000 (14:07 -0700)]
Merge pull request #553 from mrjoel/mrjoel/cmake-optional-lz4c

Add CMake option to not build legacy lz4c program

6 years agoAdd CMake option to not build legacy lz4c program
Joel Johnson [Thu, 2 Aug 2018 06:23:00 +0000 (00:23 -0600)]
Add CMake option to not build legacy lz4c program

6 years agoMerge pull request #552 from jackluo923/dev
Yann Collet [Mon, 30 Jul 2018 10:53:11 +0000 (12:53 +0200)]
Merge pull request #552 from jackluo923/dev

fixed spelling mistake in lz4_manual and lz4.h

6 years agofixed spelling mistake in lz4.h
Jack Luo [Sun, 29 Jul 2018 02:21:57 +0000 (22:21 -0400)]
fixed spelling mistake in lz4.h

6 years agofixed spelling mistake in lz4_manual
Jack Luo [Sun, 29 Jul 2018 02:12:55 +0000 (22:12 -0400)]
fixed spelling mistake in lz4_manual

6 years agoMerge pull request #547 from jennifermliu/dev
Yann Collet [Tue, 17 Jul 2018 13:42:48 +0000 (15:42 +0200)]
Merge pull request #547 from jennifermliu/dev

Add --fast command to cli

6 years agoMerge pull request #550 from terrelln/compress-doc
Yann Collet [Mon, 16 Jul 2018 10:15:21 +0000 (03:15 -0700)]
Merge pull request #550 from terrelln/compress-doc

Fix LZ4_compress_fast_continue() docs

6 years agoFix LZ4_compress_fast_continue() docs
Nick Terrell [Tue, 10 Jul 2018 18:44:03 +0000 (11:44 -0700)]
Fix LZ4_compress_fast_continue() docs

Fixes #549.

6 years agoFix bug in frame decompress example
Cedric De Brito [Mon, 2 Jul 2018 12:35:04 +0000 (14:35 +0200)]
Fix bug in frame decompress example

The decompression was failing as the srcEnd pointer in
decompress_file_internal was wrongly computed beyond
the end of the memory block.
We need to account for the fact that the header ("info")
was already read in the calling function ("alreadyConsumed").

6 years agoFixed bugs about incorrect acceleration calculation and benchmarking negative compres...
Jennifer Liu [Wed, 27 Jun 2018 20:36:38 +0000 (13:36 -0700)]
Fixed bugs about incorrect acceleration calculation and benchmarking negative compresion level

6 years agoFixed invalid argument test and reformatted else
Jennifer Liu [Wed, 27 Jun 2018 00:53:12 +0000 (17:53 -0700)]
Fixed invalid argument test and reformatted else

6 years agoFixed code based on comments from pull request
Jennifer Liu [Wed, 27 Jun 2018 00:31:15 +0000 (17:31 -0700)]
Fixed code based on comments from pull request

6 years agoRemoved duplicated circile.yml file
Jennifer Liu [Tue, 26 Jun 2018 21:48:58 +0000 (14:48 -0700)]
Removed duplicated circile.yml file

6 years agoFixed lz4 not found error part 2
Jennifer Liu [Tue, 26 Jun 2018 18:24:21 +0000 (11:24 -0700)]
Fixed lz4 not found error part 2

6 years agoFixed lz4 not found error
Jennifer Liu [Tue, 26 Jun 2018 18:15:55 +0000 (11:15 -0700)]
Fixed lz4 not found error

6 years agodelete commented out code in bench.c
Jennifer Liu [Tue, 26 Jun 2018 17:49:39 +0000 (10:49 -0700)]
delete commented out code in bench.c

6 years agofix yml file
Jennifer Liu [Tue, 26 Jun 2018 17:33:15 +0000 (10:33 -0700)]
fix yml file

6 years agoFixed bug about file to be compressed is not present
Jennifer Liu [Tue, 26 Jun 2018 01:51:47 +0000 (18:51 -0700)]
Fixed bug about file to be compressed is not present

6 years agoAdded --fast command to cli
Jennifer Liu [Tue, 26 Jun 2018 00:46:39 +0000 (17:46 -0700)]
Added --fast command to cli

6 years agoset up sample .ysml
Jennifer Liu [Wed, 20 Jun 2018 20:37:49 +0000 (13:37 -0700)]
set up sample .ysml

6 years agoMerge pull request #543 from nrgiii/aix_32bit_fuzzer
Yann Collet [Fri, 1 Jun 2018 21:40:22 +0000 (14:40 -0700)]
Merge pull request #543 from nrgiii/aix_32bit_fuzzer

Aix 32bit fuzzer

6 years agoMerge branch 'master' of https://github.com/nrgiii/lz4 into aix_32bit_fuzzer
Norm Green [Fri, 1 Jun 2018 19:00:41 +0000 (12:00 -0700)]
Merge branch 'master' of https://github.com/nrgiii/lz4 into aix_32bit_fuzzer

6 years agoFix AIX 32 bit build problem of fuzzer.c
Norm Green [Fri, 1 Jun 2018 18:52:22 +0000 (11:52 -0700)]
Fix AIX 32 bit build problem of fuzzer.c

6 years agoMerge pull request #542 from wbx-github/dev
Yann Collet [Tue, 29 May 2018 21:20:48 +0000 (14:20 -0700)]
Merge pull request #542 from wbx-github/dev

allow to override uname when cross-compiling

6 years agoMerge pull request #541 from felixhandte/hc-extern-c
Yann Collet [Tue, 22 May 2018 21:20:45 +0000 (14:20 -0700)]
Merge pull request #541 from felixhandte/hc-extern-c

Add `extern "C"` Guard Around Experimental HC Declarations

6 years agoallow to override uname when cross-compiling
Waldemar Brodkorb [Tue, 22 May 2018 18:38:20 +0000 (20:38 +0200)]
allow to override uname when cross-compiling

When cross-compiling for example from Darwin to Linux it might be
useful to override uname output to force Linux and create Linux
libraries instead of Darwin libraries.

6 years agoAlso Fix Appveyor Cast Warning
W. Felix Handte [Tue, 22 May 2018 15:28:39 +0000 (11:28 -0400)]
Also Fix Appveyor Cast Warning

6 years agoAdd `extern "C"` Guards Around Experimental HC Declarations
W. Felix Handte [Tue, 22 May 2018 01:43:54 +0000 (21:43 -0400)]
Add `extern "C"` Guards Around Experimental HC Declarations

6 years agoRemove #define-rename of `LZ4_decompress_safe_forceExtDict`
W. Felix Handte [Tue, 22 May 2018 01:55:04 +0000 (21:55 -0400)]
Remove #define-rename of `LZ4_decompress_safe_forceExtDict`

6 years agoTest Linking C-Compiled Library and C++-Compiled Tests
W. Felix Handte [Tue, 22 May 2018 01:36:49 +0000 (21:36 -0400)]
Test Linking C-Compiled Library and C++-Compiled Tests

6 years agoMerge pull request #540 from fbrosson/Haiku
Yann Collet [Thu, 17 May 2018 17:48:32 +0000 (10:48 -0700)]
Merge pull request #540 from fbrosson/Haiku

Add Haiku as a validated target.

6 years agoAdd Haiku as a validated target.
fbrosson [Thu, 17 May 2018 16:52:53 +0000 (16:52 +0000)]
Add Haiku as a validated target.

lz4 1.8.2 works fine on Haiku and passes all tests.

6 years agoMerge pull request #531 from lz4/dev
Yann Collet [Mon, 7 May 2018 21:38:45 +0000 (14:38 -0700)]
Merge pull request #531 from lz4/dev

Preparing v1.8.2

6 years agoMerge pull request #537 from lz4/xpHCmf2
Yann Collet [Mon, 7 May 2018 20:06:43 +0000 (13:06 -0700)]
Merge pull request #537 from lz4/xpHCmf2

Speed optimization for optimal parser

6 years agorenamed variable for clarity
Yann Collet [Mon, 7 May 2018 19:14:26 +0000 (12:14 -0700)]
renamed variable for clarity

6 years agoMerge pull request #538 from lz4/frameTestError
Yann Collet [Mon, 7 May 2018 18:33:53 +0000 (11:33 -0700)]
Merge pull request #538 from lz4/frameTestError

Fix frametest error

6 years agofixed minor conversion warning
Yann Collet [Mon, 7 May 2018 01:26:14 +0000 (18:26 -0700)]
fixed minor conversion warning

6 years agosmall PA optimization
Yann Collet [Sun, 6 May 2018 23:47:31 +0000 (16:47 -0700)]
small PA optimization

which measurably improves speed
on levels 9+

6 years agosmall extDict : fixed side-effect
Yann Collet [Sun, 6 May 2018 02:59:00 +0000 (19:59 -0700)]
small extDict : fixed side-effect

don't fix dictionaries of size 0.
setting dictEnd == source triggers prefix mode,
thus removing possibility to use CDict.

6 years agofixed frametest error
Yann Collet [Sun, 6 May 2018 01:24:11 +0000 (18:24 -0700)]
fixed frametest error

The error can be reproduced using following command :
./frametest -v -i100000000 -s1659 -t31096808

It's actually a bug in the stream LZ4 API,
when starting a new stream
and providing a first chunk to complete with size < MINMATCH.
In which case, the chunk becomes a dictionary.
No hash was generated and stored,
but the chunk is accessible as default position 0 points to dictStart,
and position 0 is still within MAX_DISTANCE.
Then, next attempt to read 32-bits from position 0 fails.

The issue would have been mitigated by starting from index 64 KB,
effectively eliminating position 0 as too far away.

The proper fix is to eliminate such "dictionary" as too small.
Which is what this patch does.

6 years agolz4hc: fixed PA / SC parameter order
Yann Collet [Sat, 5 May 2018 21:32:57 +0000 (14:32 -0700)]
lz4hc: fixed PA / SC parameter order

also :
reserved PA for levels 9+ (instead of 8+).
In most cases, speed is lower, and compression benefit is not worth.

6 years agolz4hc: SC only enabled for opt parser
Yann Collet [Sat, 5 May 2018 21:10:30 +0000 (14:10 -0700)]
lz4hc: SC only enabled for opt parser

the trade off is not good for regular HC parser :
compression is a little bit better, but speed cost is too large in comparison.

6 years agofixed SC.opt integration with regular HC parser
Yann Collet [Sat, 5 May 2018 20:46:45 +0000 (13:46 -0700)]
fixed SC.opt integration with regular HC parser

Only enabled when searching forward.

note : it slighly improves compression ratio,
but measurably decreases speed.
Trade-off to analyse.

6 years agolz4hc: fixed performance issue
Yann Collet [Sat, 5 May 2018 20:31:03 +0000 (13:31 -0700)]
lz4hc: fixed performance issue

when combining both PA and CS optimizations

6 years agointegrated chain swapper into HC match finder
Yann Collet [Sat, 5 May 2018 02:13:33 +0000 (19:13 -0700)]
integrated chain swapper into HC match finder

slower than expected
Pattern analyzer and Chain Swapper
work slower when both activated.
Reasons unclear.

6 years agoMerge pull request #536 from terrelln/make-install
Yann Collet [Fri, 4 May 2018 23:18:46 +0000 (16:18 -0700)]
Merge pull request #536 from terrelln/make-install

Fix make install

6 years agoAttempt to fix travis
Nick Terrell [Fri, 4 May 2018 21:33:59 +0000 (14:33 -0700)]
Attempt to fix travis

6 years agoFix make install
Nick Terrell [Fri, 4 May 2018 20:35:10 +0000 (13:35 -0700)]
Fix make install

* Uninstall didn't remove the pkg-config correctly.
* Fix `mandir`
* Allow overriding either upper- or lower-case location variables, but
  always use the lower case variables.
* Add test case that ensures overriding both upper- and lower-case
  variables is the same, and that the directory is empty after uninstall.

6 years agoimplemented search accelerator
Yann Collet [Thu, 3 May 2018 23:31:41 +0000 (16:31 -0700)]
implemented search accelerator

greatly improves speed compared to non-accelerated,
especially for slower files.

On my laptop, -b12 :
```
calgary.tar :  4.3 MB/s =>  9.0 MB/s
enwik7      : 10.2 MB/s => 13.3 MB/s
silesia.tar :  4.0 MB/s =>  8.7 MB/s
```

Note : this is the simplified version,
without handling dictionaries, external buffer, nor pattern analyzer.
Current `dev` branch on these samples gives :
```
calgary.tar :  4.2 MB/s
enwik7      :  9.7 MB/s
silesia.tar :  3.5 MB/s
```

interestingly, it's slower,
presumably due to handling of dictionaries.

6 years agoAdded CDict speed graph to be used for release statement
Yann Collet [Thu, 3 May 2018 23:01:24 +0000 (16:01 -0700)]
Added CDict speed graph to be used for release statement

6 years agoupdated API documentation
Yann Collet [Thu, 3 May 2018 22:40:01 +0000 (15:40 -0700)]
updated API documentation

6 years agocreated LZ4HC_FindLongestMatch()
Yann Collet [Thu, 3 May 2018 22:38:32 +0000 (15:38 -0700)]
created LZ4HC_FindLongestMatch()

simplified match finder
only searching forward and within current buffer,
for easier testing of optimizations.

6 years agoMerge pull request #529 from felixhandte/lz4f-fast-reset-for-streaming-only
Yann Collet [Thu, 3 May 2018 22:37:51 +0000 (15:37 -0700)]
Merge pull request #529 from felixhandte/lz4f-fast-reset-for-streaming-only

LZ4F: Only Reset the LZ4_stream_t when Init'ing a Streaming Block

6 years agoMerge pull request #530 from lz4/lz4fRingBuffer
Yann Collet [Thu, 3 May 2018 19:55:04 +0000 (12:55 -0700)]
Merge pull request #530 from lz4/lz4fRingBuffer

Random lz4f clarifications

6 years agoMerge branch 'dev' into lz4fRingBuffer
Yann Collet [Thu, 3 May 2018 18:54:57 +0000 (11:54 -0700)]
Merge branch 'dev' into lz4fRingBuffer

6 years agoMerge pull request #528 from lz4/complexShortcut
Yann Collet [Thu, 3 May 2018 18:35:50 +0000 (11:35 -0700)]
Merge pull request #528 from lz4/complexShortcut

Faster decoding speed

6 years agofix comments / indentation
Cyan4973 [Thu, 3 May 2018 14:56:33 +0000 (07:56 -0700)]
fix comments / indentation

as requested by @terrelln

6 years agoOnly Reset the LZ4 Stream when Init'ing a Streaming Block
W. Felix Handte [Thu, 3 May 2018 03:29:07 +0000 (23:29 -0400)]
Only Reset the LZ4 Stream when Init'ing a Streaming Block

6 years agoupdated NEWS in preparation for v1.8.2
Yann Collet [Wed, 2 May 2018 23:52:33 +0000 (16:52 -0700)]
updated NEWS in preparation for v1.8.2