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317 Commits

Author SHA1 Message Date
Nick Terrell
659e9f05cf Fix null pointer addition 2019-11-20 18:36:04 -08:00
Nick Terrell
a839d6852c
Merge pull request #1888 from senhuang42/superblocks_fixed 
RLE test and re-enable RLE in main compression loop
 2019-11-18 16:09:33 -08:00
Sen Huang
bc3e21578d No margin on RLE test size check 2019-11-18 16:39:16 -05:00
Sen Huang
db8efbfe7d Updated comment to reflect actual compression behavior 2019-11-15 16:11:14 -05:00
Sen Huang
75c34684c0 Modified existing RLE test to take compressed size into account 2019-11-15 12:26:48 -05:00
Yann Collet
d67742bc5d
Merge pull request #1858 from senhuang42/dictionary_header_size 
Method to get dictionary header size
 2019-11-14 09:44:07 -08:00
Sen Huang
97b7f712f3 Change to heap allocation, remove implicit type conversion 2019-11-08 13:57:25 -05:00
Sen Huang
e1edc554a3 Added 2 unit tests: one for sanity, one for correctnesson fixed dict 2019-11-08 13:57:25 -05:00
Nick Terrell
8c474f9845 Fix parameter selection and adjustment with srcSize == 0 2019-11-07 08:58:43 -08:00
Nick Terrell
b1ec94e63c Fix ZSTD_f_zstd1_magicless for small data 
* Fix `ZSTD_FRAMEHEADERSIZE_PREFIX` and `ZSTD_FRAMEHEADERSIZE_MIN` to
  take a `format` parameter, so it is impossible to get the wrong size.
* Fix the places that called `ZSTD_FRAMEHEADERSIZE_PREFIX` without
  taking the format into account, which is now impossible by design.
* Call `ZSTD_frameHeaderSize_internal()` with `dctx->format`.
* The added tests catch both bugs in `ZSTD_decompressFrame()`.

Fixes #1813.
 2019-10-21 21:16:17 -07:00
Yann Collet
6323966e53 updated erroneous comments using ZSTD_dm_* 
instead of the current ZSTD_dct_*,
reported by @nigeltao (#1822)
 2019-10-16 16:14:04 -07:00
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
b63a1e7ae5 Typo fix 2019-09-27 07:20:20 -07:00
Bimba Shrestha
91daee5c06 Fixing appveyor test 2019-09-26 16:21:57 -07:00
Bimba Shrestha
75b1286354 Fixing shortest failure 2019-09-26 16:07:34 -07:00
Bimba Shrestha
bb27472afc Adding more realistic test for get sequences 2019-09-26 15:38:31 -07:00
Bimba Shrestha
be0bebd24e Adding test and null check for malloc 2019-09-23 15:08:18 -07:00
W. Felix Handte
f7d9b36835 Update Comment on ZSTD_estimateCCtxSize() 2019-09-20 14:11:29 -04:00
Bimba Shrestha
3cacc0a30b Casting void pointer to ZSTD_Sequence pointer 2019-09-17 17:44:08 -07:00
Bimba Shrestha
5b038f128f Merge branch 'extract_sequences_api' of https://github.com/bimbashrestha/zstd into extract_sequences_api 2019-09-16 13:35:49 -07:00
Bimba Shrestha
1f93be0f6d Handling memory leak and potential side effect 2019-09-16 13:35:45 -07:00
Bimba Shrestha
a874435478
Merge branch 'dev' into extract_sequences_api 2019-09-16 13:29:59 -07:00
W. Felix Handte
194c542598 Fix Memory Leak in Test 2019-09-11 14:25:30 -04:00
W. Felix Handte
ff67c62458 Fix Compilation Error (uint32_t -> size_t) 2019-09-11 13:59:09 -04:00
W. Felix Handte
5707c8a9d5 Speed Up Test a Little 2019-09-11 13:23:59 -04:00
W. Felix Handte
ed4c2c60c3 Add Fuzzer Test Case for Index Reduction 2019-09-11 13:17:19 -04:00
Bimba Shrestha
9e7bb55e14 Addressing comments 2019-09-09 20:04:46 -07:00
Bimba Shrestha
5f8b0f6890 Changing api to get sequences across all blocks 2019-08-30 09:18:44 -07:00
Yann Collet
5198347382
Merge pull request #1744 from bimbashrestha/dev 
Generate RLE blocks in the encoder
 2019-08-29 15:19:10 -07:00
bimbashrestha
e5704bbfdf Added test for multiple blocks of zeros and fixed nit about comments 2019-08-28 08:32:34 -07:00
Ed Maste
b81d7cc6a0 remove extraneous doubled ;s 2019-08-15 21:17:06 -04:00
Yann Collet
0b0b83e8f3 fix test 122 
it's an unsupported scenario.
 2019-08-03 16:51:26 +02:00
Yann Collet
efe8496755 minor test refactoring 
just for clarity, for the currently failing unit test
 2019-08-02 19:31:19 +02:00
Yann Collet
387e20d4f0 fixed minor conversion warning in datagen 2019-08-02 18:02:54 +02:00
Yann Collet
37f47e51a8 fixed datagen 
to produce same content on both 32 and 64-bit platforms
by removing floating from literal table determination.

also : added checksum trace in compression control test,
so that it's easier to determine if test fails
as a consequence of compressing a different sample.
 2019-08-02 17:34:53 +02:00
Yann Collet
d1927f0b39 regenerate sample to compress 
to reduce chances of differences between 32 and 64-bit fuzzer tests
 2019-08-02 15:31:00 +02:00
Yann Collet
5cf1b24aca fixed strategies greedy, lazy & lazy2 
restore dictionary compression ratio
 2019-08-02 14:21:39 +02:00
Yann Collet
2115292616 minor : fixed ptr arithmetic 
invalid on void ptr
 2019-08-01 17:12:26 +02:00
Yann Collet
810a9cac08 added efficiency test 
to detect gross CR variations after a patch.

Tests normal and dictionary compression.
 2019-08-01 16:59:22 +02:00
Yann Collet
98692c2838 fixed compression ratio regression when dictionary-compressing medium-size inputs at levels 1-3 2019-08-01 15:58:17 +02:00
Tyler-Tran
c55d2e7ba3 Adding shrinking flag for cover and fastcover (#1656) 
* Changed ERROR(GENERIC) excluding inits

* editing git ignore

* Edited init functions to size_t returns

* moved declarations earlier

* resolved issues with changes to init functions

* fixed style and an error check

* attempting to add tests that might trigger changes

* added && die to cases expecting to fail

* resolved no die on expected failed command

* fixed accel to be incorrect value

* Adding an automated shrinking option

* Fixing build

* finalizing fixes

* fix?

* Removing added comment in cover.h

* Styling fixes

* Merging with fb dev

* removing megic number for default regression

* Requested revisions

* fixing support for fast cover

* fixing casting errors

* parenthesis fix

* fixing some build nits

* resolving travis ci syntax

* might resolve all compilation issues

* removed unused variable

* remodeling the selectDict function

* fixing bad memory access

* fixing error checks

* fixed erroring check in selectDict

* fixing mixed declarations

* modify mixed declaration

* fixing nits and adding test cases

* Adding requested changes + fixed bug for error checking

* switched double comparison from != to <

* fixed declaration typing

* refactoring COVER_best_finish() and changing shrinkDict

* removing the const's

* modifying ZDICT_optimizeTrainFromBuffer_cover functions

* fixing potential bad memcpy

* fixing the error function for dict size
 2019-06-27 16:26:57 -07:00
Yann Collet
ed38b645db fullbench: pass proper parameters in scenario 43 2019-05-29 15:26:06 -07:00
Yann Collet
4baecdf72a added comments to better understand enforceMaxDist() 2019-05-28 13:15:48 -07:00
Josh Soref
a880ca239b Spelling (#1582) 
* spelling: accidentally

* spelling: across

* spelling: additionally

* spelling: addresses

* spelling: appropriate

* spelling: assumed

* spelling: available

* spelling: builder

* spelling: capacity

* spelling: compiler

* spelling: compressibility

* spelling: compressor

* spelling: compression

* spelling: contract

* spelling: convenience

* spelling: decompress

* spelling: description

* spelling: deflate

* spelling: deterministically

* spelling: dictionary

* spelling: display

* spelling: eliminate

* spelling: preemptively

* spelling: exclude

* spelling: failure

* spelling: independence

* spelling: independent

* spelling: intentionally

* spelling: matching

* spelling: maximum

* spelling: meaning

* spelling: mishandled

* spelling: memory

* spelling: occasionally

* spelling: occurrence

* spelling: official

* spelling: offsets

* spelling: original

* spelling: output

* spelling: overflow

* spelling: overridden

* spelling: parameter

* spelling: performance

* spelling: probability

* spelling: receives

* spelling: redundant

* spelling: recompression

* spelling: resources

* spelling: sanity

* spelling: segment

* spelling: series

* spelling: specified

* spelling: specify

* spelling: subtracted

* spelling: successful

* spelling: return

* spelling: translation

* spelling: update

* spelling: unrelated

* spelling: useless

* spelling: variables

* spelling: variety

* spelling: verbatim

* spelling: verification

* spelling: visited

* spelling: warming

* spelling: workers

* spelling: with
 2019-04-12 11:18:11 -07:00
Yann Collet
8ac2831f3d
Merge pull request #1581 from facebook/benchfn 
benchfn's reduced dependencies
 2019-04-11 14:23:04 -07:00
Nick Terrell
50b9c41196 [libzstd] Fix decompression dictionary bugs and clean up initialization 
Bugs:

* `ZSTD_DCtx_refPrefix()` didn't clear the dictionary after the first
  use. Fix and add a test case.
* `ZSTD_DCtx_reset()` always cleared the dictionary. Fix and add a test
  case.
* After calling `ZSTD_resetDStream()` you could no longer load a
  dictionary, since the stage was set to `zdss_loadHeader`. Fix and add
  a test case.

Cleanup:

* Make `ZSTD_initDStream*()` and `ZSTD_resetDStream()` wrap the new
 advanced API, and add test cases.
* Document the equivalent of these functions in the advanced API and
  document the unstable functions as deprecated.
 2019-04-10 12:59:02 -07:00
Yann Collet
59a7116cc2 benchfn dependencies reduced to only timefn 
benchfn used to rely on mem.h, and util,
which in turn relied on platform.h.
Using benchfn outside of zstd required to bring all these dependencies.

Now, dependency is reduced to timefn only.
This required to create a separate timefn from util,
and rewrite benchfn and timefn to no longer need mem.h.

Separating timefn from util has a wide effect accross the code base,
as usage of time functions is widespread.
A lot of build scripts had to be updated to also include timefn.
 2019-04-10 12:37:03 -07:00
Nick Terrell
824aaa695f [libzstd] Fix ZSTD_decompressDCtx() with a dictionary 
* `ZSTD_decompressDCtx()` did not use the dictionary loaded by
  `ZSTD_DCtx_loadDictionary()`.
* Add a unit test.
* A stacked diff uses `ZSTD_decompressDCtx()` in the
  `dictionary_round_trip` and `dictionary_decompress` fuzzers.
 2019-04-09 17:59:27 -07:00
Nick Terrell
48a6427d22 [libzstd] Fix ZSTD_compress2() for multithreaded compression 
`ZSTD_compress2()` wouldn't wait for multithreaded compression to
finish. We didn't find this because ZSTDMT will block when it can
compress all in one go, but it can't do that if it doesn't have enough
output space, or if `ZSTD_c_rsyncable` is enabled.

Since we will already sometimes block when using `ZSTD_e_end`, I've
changed `ZSTD_e_end` and `ZSTD_e_flush` to guarantee maximum forward
progress. This simplifies the API, and helps users avoid the easy bug
that was made in `ZSTD_compress2()`

* Found by the libfuzzer fuzzers.
* Added a test case that catches the problem.
* I will make the fuzzers sometimes allocate less than
  `ZSTD_compressBound()` output space.
 2019-04-09 16:24:17 -07:00