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3557 Commits
Author SHA1 Message Date
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
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
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
Björn Ketelaars 1f661b5f6b 'head -c BYTES' is non-portable 2020-10-27 16:55:23 +01:00
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 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
Yann ColletandGitHub 2224ec33ed Merge pull request #2367 from facebook/progressive_build 
faster rebuild of zstd
 2020-10-21 15:43:14 -07:00
Yann Collet 2b99bc29bf consolidated vpath 2020-10-21 04:01:01 -07:00
Yann Collet e8eb2939fe store %.o object files into obj/ 
both static and dynamic libraries have their own object directory
 2020-10-21 03:44:38 -07:00
Yann Collet 3e519be965 minor cleaning 2020-10-21 03:22:27 -07:00
Yann Collet 911dbdbb4b build libzstd.so from object files 
%.o object files generated for dynamic library
must be different from those generated for static library.

Due to this difference, %.o were so far only generated for the static library.
The dynamic library was rebuilt from %.c source.

This meant that, for every minor change, the entire dynamic library had to be rebuilt.

This is fixed in this PR :
only the modified %.c source get rebuilt.
 2020-10-20 22:19:57 -07:00
senhuang42 8bdb32aebe Add a function for LDM enable check 2020-10-20 13:46:02 -04:00
senhuang42 578e889ec1 Move ldm enable to compressStream2() 2020-10-20 13:04:45 -04:00
senhuang42 d28d8a1d72 Include LDM tables size for CCtx size estimation where relevant 2020-10-20 09:21:30 -04:00
senhuang42 b1c7fc5768 Add compatibility for multithreading 2020-10-19 12:07:06 -04:00
senhuang42 aad436da37 Document ldm enabled by default in zstd.h 2020-10-19 11:02:29 -04:00
senhuang42 590f7f55f0 Add ldm enable condition in ZSTD_resetCCtx_internal 2020-10-19 10:26:17 -04:00
senhuang42 4d01979b62 Expose and call ZSTD_ldm_skipRawSeqStoreBytes() 2020-10-16 20:30:00 -04:00
Yann ColletandGitHub a0ec50c2dc Merge pull request #2355 from senhuang42/change_ldm_mt_config 
Reduce --long mode MT jobsize at higher levels
 2020-10-16 13:35:50 -07:00
Yann Collet 314c7df170 minor : change test order 
to reduce a warning with `clang` on Windows
 2020-10-16 13:26:47 -07:00
senhuang42 f49926edf4 Change cycleLog adjustment to +3 from +4 2020-10-15 09:56:05 -04:00
senhuang42 ee84817fe7 Reset posInSequence when using ZSTD_referenceExternalSequences() 2020-10-14 22:06:08 -04:00