townforge/lz4
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
2,868 Commits 1 Branch 0 Tags 5.8 MiB
cc
Commit Graph

2868 Commits

This Branch
This Branch
All Branches
Author SHA1 Message Date
Yann Collet
a31b7058cb small modification of lz4 decoder to shortcut common case (short branch). 2017-10-25 10:10:53 +02:00
Yann Collet
16a4337473 added hash chain with conditional length 
not a success yet
 2017-10-25 07:07:08 +02:00
Yann Collet
a12cdf00c3 lz4opt: added hash chain search 2017-10-20 17:04:29 -07:00
Yann Collet
fd6bd5107b switched many types to int 2017-10-20 15:33:52 -07:00
Yann Collet
d813134619 removed SET_PRICE macro 2017-10-20 13:44:49 -07:00
Yann Collet
fa064c8a8c removed one macro usage 2017-10-20 13:32:45 -07:00
Yann Collet
ee62faee08 minor refactor 
reduce variable scope
remove one macro usage
 2017-10-20 12:05:00 -07:00
Yann Collet
fc879fe170 lz4opt: refactor sequence reverse traversal 2017-10-20 11:32:15 -07:00
Yann Collet
c058753393 refactor variable matchnum 
separate initial and iterative search
renamed nb_matches
 2017-10-20 11:24:56 -07:00
Yann Collet
7bb0a617ee simplified initial cost conditions 
llen integrated in opt[]
 2017-10-20 11:00:10 -07:00
Yann Collet
6cec68de39 added assert 2017-10-19 16:47:25 -07:00
Yann Collet
ac2ad52257 renamed last_pos into last_match_pos 2017-10-19 16:43:36 -07:00
Yann Collet
708e2cbb60 simplified early exit when single solution 2017-10-19 16:39:40 -07:00
Nick Terrell
74d8688bc8 [bench] Use higher resolution timer on POSIX 
The timer used was only accurate up to 0.01 seconds. This timer is accurate up to 1 ns.
It is a monotonic timer that measures the real time difference, not on CPU time.

Copied the benchmark code from 6ab4d5e904
 2017-10-17 13:55:35 -07:00
Yann Collet
dccf8826f1 lz4cli : minor rewrite of lz4c legacy commands 
for clarity
 2017-10-14 23:50:07 -07:00
Yann Collet
1aa997b594 Merge branch 'dev' of github.com:Cyan4973/lz4 into dev 2017-10-14 18:49:06 -07:00
Yann Collet
2d827e1b28 lz4cli : removed extension artefacts 
It used to be useful for an old Windows variant which is no longer maintained.
 2017-10-14 18:48:00 -07:00
Yann Collet
f92722eea0 Merge pull request #407 from odaira/useO2ppc64le 
Use O2 for the decompression functions on ppc64le with gcc
 2017-10-13 16:21:46 -07:00
Rei Odaira
73bcf90e51 Use the optimization level of O2 for the decompression functions on ppc64le with gcc, to avoid harmful unrolling and SIMDization with O3 2017-10-13 14:53:37 -05:00
Yann Collet
34da12c6e6 Merge pull request #403 from felixhandte/lz4-cli-dict-support-tests 
Support Dictionaries on the Command Line
 2017-10-10 16:18:16 -07:00
W. Felix Handte
9a16272261 Read the Dictionary into a Circular Buffer 2017-10-09 20:18:21 -04:00
W. Felix Handte
93f8284c17 Add some tests verifying command line dictionary functionality 2017-10-09 20:18:03 -04:00
W. Felix Handte
2bd85f4199 Add Dictionary Support to the Command Line Tool 2017-10-09 20:16:00 -04:00
Yann Collet
a4314829db fused getLongerMatch and getWiderMatch 2017-10-09 01:50:28 -07:00
Yann Collet
97c18f5f0e re-inserted last byte test in widerMatch 2017-10-09 01:44:05 -07:00
Yann Collet
bdca63ed69 early out is not better 2017-10-09 00:36:47 -07:00
Yann Collet
1ee17e4eb8 optional fuse 2017-10-09 00:31:12 -07:00
Yann Collet
b9459faeb2 improved search of rep-1 patterns 2017-10-08 23:55:42 -07:00
Yann Collet
f1fa91d6fc insertAndFindBestMatch defers to insertAndGetWiderMatch 2017-10-08 23:40:21 -07:00
Yann Collet
87968517f9 fixed decoding block checksum in lz4frame 2017-10-04 15:24:08 -07:00
Yann Collet
f6b31bf0d0 fix #404 
static analyzer `cppcheck` complains about a shift-by-32 on a 32 bits value,
which is an undefined behavior.
However, the flagged code path is never triggered in 32-bits mode,
(actually, it's not even generated if DCE kicks in),
the shift-by-32 is necessarily performed on a 64-bits value.

While it doesn't change anything regarding lz4 code generation, for both 32 and 64 bits mode,
(can be checked by md5sum on the generated binary),
the shift has been rewritten in a way which should please this static analyzer,
since it now pretends to shift by 16 on 32-bits cpu (note : it doesn't matter since the code will not even be generated in this case).

Note : this is a blind fix, the new code has not been tested with cppcheck, because cppcheck only works on Windows.
Other static analyzer, such as scan-build, do not trigger this false positive.
 2017-09-30 10:35:55 -07:00
Yann Collet
ceb868f442 minor lz4frame code refactor 
try to improve code readability.
minor optimization on condition to preserve history.
 2017-09-23 15:06:24 -07:00
Yann Collet
2a9af21d62 Merge pull request #402 from felixhandte/fix-dict-segfault 
Fix dict segfault
 2017-09-23 14:02:22 -07:00
W. Felix Handte
77f7245ea7 Fix Segfault When Copying Dict 
dctx must have been initialized before we can copy the dictionary in.
 2017-09-22 13:20:49 -07:00
Yann Collet
810e2ca27b minor improvements to examples 
cosmetic : better display
added optional variable MOREFLAGS
 2017-09-11 10:25:47 -07:00
Yann Collet
e5bd29a2fb made clang warnings fail (-Werror) 
in order to catch them in CI tests
 2017-09-10 14:35:16 -07:00
Yann Collet
a30cba08f4 fixed a bunch of -Wcomma warnings 
reported by @rvandermeulen (#398)
 2017-09-10 14:32:38 -07:00
Yann Collet
a2b4f732f4 added -Wcomma to travisCI clang test 2017-09-10 14:23:18 -07:00
Yann Collet
b500c5282e fix #397 : decompression failed when using a combination of extDict + low memory address 
Reported and fixed by @jscheid

Note : we are missing a test case to include it in the CI
 2017-09-07 12:48:24 -07:00
Yann Collet
00418f7611 bench : made decompression speed evaluation same time as compression 
minor : slightly modified an example do avoid disabling a gcc warning through #pragma
 2017-09-07 12:12:36 -07:00
Yann Collet
ee5332438b minor Makefile fixes 2017-09-06 17:41:44 -07:00
Yann Collet
1ad9a36cfb updated lib/README 
clarifications, improved wording
 2017-09-06 11:22:45 -07:00
Yann Collet
3d260f3522 complementary information for #394 2017-08-30 16:09:10 -07:00
Yann Collet
e3c71584ff clarified documentation of streaming decompression functions 
(synchronous bufferless mode)
answering questions by @jtbandes (#394)
 2017-08-30 15:42:04 -07:00
Yann Collet
69c3f4bb55 minor typo fix 2017-08-30 15:02:04 -07:00
Yann Collet
f212a10ae0 fixed FS-independent file order in /lib 
identified by @bmwiedemann
 2017-08-29 15:31:56 -07:00
Yann Collet
c4d6884cd8 build: source files sorted in a FS independent manner 
to be more compatible with reproducible builds.
patch inspired by @bmwiedemann
 2017-08-26 12:22:51 -07:00
Yann Collet
d2306b836e updated NEWS with fixes 2017-08-25 14:13:29 -07:00
Yann Collet
2fa660bb06 Merge pull request #386 from lz4/parallelMake 
`make test` compatible with parallel execution (`-j#`)
 2017-08-25 11:23:30 -07:00
Yann Collet
a261f51ee3 removed fasttest from circleCI 2017-08-25 09:50:56 -07:00