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3573 Commits
Author SHA1 Message Date
Nick TerrellandGitHub 7205e609a9 Merge pull request #2354 from terrelln/stable-buffer 
Add ZSTD_c_stable{In,Out}Buffer and optimize when set
 2020-10-30 15:06:56 -07:00
senandGitHub c37c714ef1 Merge pull request #2376 from senhuang42/clarify_sequence_extraction_api 
Refine external ZSTD_Sequence API
 2020-10-30 15:47:25 -04:00
Nick Terrell d4e021fe35 [lib] Avoid allocating the input buffer when ZSTD_c_stableInBuffer is set 
We don't use it when we have a stable input buffer, so don't allocate
it. I had to slightly modify `ZSTD_copyCCtx()` by storing the
`ZSTD_buffered_policy_e` in the `ZSTD_CCtx`, since `inBuffSize > 0` is
no longer the correct signal for the buffered mode.
 2020-10-30 10:55:34 -07:00
Nick Terrell 24f72789e2 [lib] Skip the input window buffer when ZSTD_c_stableInBuffer is set 
Compress directly from the `ZSTD_inBuffer`. We still allocate the input
buffer. A following commit will remove that allocation.
 2020-10-30 10:55:34 -07:00
Nick Terrell 6bd6b6f7d3 [cwksp] Return NULL when 0 bytes are requested 
This ensures that the buffer is never used.
 2020-10-30 10:55:34 -07:00
Nick Terrell fcf81cee5e [lib] Avoid allocating output buffer when ZSTD_c_stableOutBuffer is set 
We compress directly to the `ZSTD_outBuffer` so we don't need to
allocate it.
 2020-10-30 10:55:34 -07:00
Nick Terrell 6d5dc93d4e [lib] Compress directly into output when ZSTD_c_stableOutBuffer is set 
When we have a stable output buffer always compress directly into the
`ZSTD_outBuffer`. We are allowed to return `dstSizeTooSmall`.
 2020-10-30 10:55:34 -07:00
Nick Terrell 987cb4ca6a [lib] Take the shortcut when ZSTD_c_stableOutBuffer is set 
When we have a stable output buffer take the single-pass shortcut.
It is okay to return `dstSizeTooSmall` if the output buffer isn't
big enough, because we know it will never grow.
 2020-10-30 10:55:34 -07:00
Nick Terrell 809b2f2071 [lib] Set ZSTD_c_stable{In,Out}Buffer in ZSTD_compress2() 
Sets these parameters in ZSTD_compress2() then resets them to their
orignal values after the compression call.

An alternative design could be to add a flush mode `ZSTD_e_singlePass`
which implies `ZSTD_c_stable{In,Out}Buffer` but only for a single
compression call, by directly setting the applied parameters. I've opted
for the smaller change, but this is open for discussion.
 2020-10-30 10:55:34 -07:00
Nick Terrell c74be3f6de [lib] Validate buffers when ZSTD_c_stable{In,Out}Buffer is set 
Adds the validation of the input/output buffers only. They are still
unused.
 2020-10-30 10:55:34 -07:00
Nick Terrell e3e0775cc8 [API] Add ZSTD_c_stable{In,Out}Buffer parameters 
This commit adds the parameters and sets the value in the CCtxParams
but it does not do anything with the value.
 2020-10-30 10:54:39 -07:00
Nick Terrell e2581d9572 [lib] Set appliedParams in zstdmt mode 
Previously only `nbWorkers` was set. Set all parameters, because that is
what is expected. This is needed for the `ZSTD_c_stable{In,Out}Buffer`
parameters.
 2020-10-30 10:54:38 -07:00
senhuang42 f0da97642a Specify that getSequences() will always emit block boundary sequences 2020-10-30 12:31:17 -04:00
senhuang42 536e89c723 Sequence extractor should update CBlockState 2020-10-30 12:13:19 -04:00
senhuang42 32cac2627a Emit last literals of 0 size as well, to indicate block boundary 2020-10-29 16:41:17 -04:00
senhuang42 69bd5f0654 Correct literalsRead calculation to include longLength 2020-10-29 14:49:37 -04:00
senhuang42 59624f3163 Remove implicit typecast to appease appVeyor windows build 2020-10-28 16:25:09 -04:00
Yann Collet 09e3bb95d2 Merge branch 'dev' into libzstd_autoconf_full 2020-10-28 10:53:08 -07:00
Yann Collet 0adce4631d Merge branch 'libzstd_autoconf_full' of github.com:facebook/zstd into libzstd_autoconf_full 2020-10-28 10:25:55 -07:00
Yann Collet f6ecf1568f minor Makefile refactor 
hopefully improving readability
 2020-10-28 09:39:15 -07:00
senhuang42 3ed5d053d8 Clarify comments in zstd.h some more 2020-10-28 09:53:09 -04:00
Nick TerrellandGitHub 599ff58e08 Merge pull request #2339 from terrelln/zstdmt-stability 
Fix zstdmt stability issues and clean up the zstdmt code
 2020-10-27 19:43:13 -07:00
Yann Collet ceccd7ae2d Merge branch 'dev' into libzstd_autoconf_full 2020-10-27 15:45:30 -07:00
Yann ColletandGitHub 2d2507b9db Merge pull request #2374 from bket/portability 
'head -c BYTES' is non-portable
 2020-10-27 14:15:35 -07:00
senandGitHub 17b700d78a Merge pull request #2366 from senhuang42/enable_ldm_by_default 
Enable LDM by default if window size >= 128MB and strategy uses opt parser
 2020-10-27 14:59:28 -04:00
Nick TerrellandGitHub 0953645837 Merge pull request #2362 from senhuang42/fix_ldm_fuzz_issue 
Fix long distance matcher OSS-fuzz issue
 2020-10-27 11:13:03 -07:00
senhuang42 3163909d14 Remove unused variable position 2020-10-27 12:58:12 -04:00
senhuang42 dc448563e9 Add test compatibility with last literals in sequences 2020-10-27 12:35:28 -04:00
Björn Ketelaars 1f661b5f6b 'head -c BYTES' is non-portable 2020-10-27 16:55:23 +01:00
senhuang42 1d221ecc03 Add support for representing last literals in the extracted seqs 2020-10-27 11:19:48 -04:00
senhuang42 9171f920cd Improve documentation of seqStore_t 2020-10-27 10:50:22 -04:00
senhuang42 96b0ff7886 Improve documentation regarding various operations in copyBlockSequences 2020-10-27 10:36:06 -04:00
senhuang42 3a11c7eb03 Modify ZSTD_copyBlockSequences to agree with new API 2020-10-27 10:31:40 -04:00
senhuang42 761f40d1c6 Clarify and modify ZSTD_Sequence definition 2020-10-27 09:41:32 -04:00
Yann Collet 456db0c377 make install only rebuild binaries if they don't exist 
Now `make` followed by `make install` doesn't rebuild binaries

also : only generated target directories if they don't already exist
 2020-10-23 16:46:49 -07:00
Yann Collet a6ee614a44 make zstd is now differentiated from zstd-nomt 
avoids mixing object files using different flags
 2020-10-23 16:08:21 -07:00
Yann Collet 89b961ea46 simplified silent mode maintenance 2020-10-23 10:41:17 -07:00
Yann Collet ffe8d9e428 fix partial lib test 2020-10-23 10:27:12 -07:00
Yann Collet b5d4728713 simplified silent mode 2020-10-23 10:22:52 -07:00
Yann Collet a7ad05bf57 fixed building libzstd with manual BUILD_DIR 
and when HASH is not found
 2020-10-23 10:14:04 -07:00
Yann Collet d3f1a9b5bd fix partial-build test 
sometimes, the scope difference is solely determined by the list of source files,
not by the flags.
 2020-10-22 21:36:09 -07:00
Yann Collet a912ef0952 can integrate later dynamic flags changes 
for example `libzstd-mt` is `differentiated from `libzstd`
 2020-10-22 18:48:06 -07:00
Yann ColletandGitHub f90424da2d Merge pull request #2368 from facebook/progressive_libzstd 
faster rebuild of libzstd
 2020-10-22 17:36:56 -07:00
Yann Collet ce6cd07c33 updated build documentation 2020-10-22 12:31:23 -07:00
Yann Collet e3867fb735 fixed libzstd.dll compilation on mingw 
and zstd linking
 2020-10-22 11:52:19 -07:00
Yann Collet 494f7169ed fix directory creation for Windows' libzstd 2020-10-22 00:15:31 -07:00
Yann Collet dd24496951 programs/zstd also automatically generate object dir per conf 
same rules as lib/libzstd
can also be controlled via HASH and BUILD_DIR
 2020-10-21 23:38:33 -07:00
Yann Collet 0f8ee5c51e Merge branch 'dev' into libzstd_autoconf 2020-10-21 22:36:09 -07:00
Yann Collet d0436b2a45 automatically detect configuration changes 
Makefile now automatically detects modifications of compilation flags,
and produce object files in directories dedicated to this compilation flags.
This makes it possible, for example, to compile libzstd with different DEBUGLEVEL.
Object files sharing the same configration will be generated into their dedicated directories.

Also : new compilation variables
- DEBUGLEVEL : select the debug level (assert & traces) inserted during compilation (default == 0 == release)
- HASH : select a hash function to differentiate configuration (default == md5sum)
- BUILD_DIR : skip the hash stage, store object files into manually specified directory
 2020-10-21 19:22:45 -07:00
Yann Collet 8a453a34c5 automatic %.h header dependency tracking 
also : BUILD_DIR can be manually specified
 2020-10-21 17:25:07 -07:00