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Author SHA1 Message Date
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
sen
ff93440fc6 Merge pull request #2375 from senhuang42/ldm_oss_fuzz_testcase 
Add a test case for LDM + opt parser with small uncompressible block
 2020-10-29 09:32:05 -04:00
senhuang42
7198ebb213 Un-mix declarations and code 2020-10-28 18:51:03 -04:00
senhuang42
60a52c29e6 Add check for allocation 2020-10-28 16:22:22 -04:00
Yann Collet
bb4ea40e4d Merge pull request #2373 from facebook/libzstd_autoconf_full 
Automatic detection of configuration changes
 2020-10-28 11:57:08 -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 Terrell
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 Collet
2d2507b9db Merge pull request #2374 from bket/portability 
'head -c BYTES' is non-portable
 2020-10-27 14:15:35 -07:00
senhuang42
169fc07aa1 Move test to appropriate location 2020-10-27 16:59:43 -04:00
senhuang42
db0b5d7d1e Add test to fuzzer.c 2020-10-27 16:57:24 -04:00
sen
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 Terrell
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
59ab4dcd32 Merge branch 'dev' into libzstd_autoconf_full 2020-10-26 15:17:39 -07:00
Yann Collet
284d84ecf7 Merge pull request #2370 from facebook/libzstd_autoconf 
Automatic configuration detection
 2020-10-26 15:16:04 -07:00
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
98787a3018 Merge branch 'dev' into libzstd_autoconf 2020-10-22 18:55:30 -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
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
91a8cb9559 fix DEBUGLEVEL redefinition from tests/ 2020-10-22 00:20:40 -07:00
Yann Collet
494f7169ed fix directory creation for Windows' libzstd 2020-10-22 00:15:31 -07:00
Yann Collet
ca75da8fa3 fix test 
DEBUGLEVEL redefinition
 2020-10-21 23:51:13 -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
01ecad2326 zstd in programs/ can also receive a DEBUGLEVEL value 
simplify tests : only set DEBUGLEVEL, not the flags directly
 2020-10-21 23:13:46 -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 Collet
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