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4582 Commits
Author SHA1 Message Date
W. Felix Handte 7b9a755ac9 Remove Chain Limit on Hash Cache Entries; Slightly Improve Compression 
Entries in the hashTable chain cache aren't subject to the same aliasing that
the circular chain table is subject to. As such, we don't need to stop when we
cross the chain limit. We can delve deeper. :)
 2020-09-10 18:51:52 -04:00
W. Felix Handte e8b4011b52 Split Lookups in Hash Cache and Chain Table into Two Loops 
Sliiiight speedup.
 2020-09-10 18:51:52 -04:00
W. Felix Handte 9e83c782f8 Simplify DDS Hash Table Construction 
No need to walk the chainTable; we can just keep shifting the entries in the
hashTable.
 2020-09-10 18:51:52 -04:00
W. Felix Handte ad9f98ac3f Document the ZSTD_c_enableDedicatedDictSearch Parameter 2020-09-10 18:51:52 -04:00
W. Felix Handte 5390fee4f7 Rename and Move DD_BLOG Constant to ZSTD_LAZY_DDSS_BUCKET_LOG 2020-09-10 18:51:52 -04:00
W. Felix Handte 5e91ae27eb Prefetch First Batch of Match Positions; +11% Speed in Level 5 w/ 1 Dict 2020-09-10 18:51:52 -04:00
W. Felix Handte df386b3d8d Fix Off-By-One Error in Counting DDS Search Attempts 
This caused us to double-search the first position and fail to search the
last position in the chain, slowing down search and making it less effective.
 2020-09-10 18:51:52 -04:00
W. Felix Handte 914bfe7ee4 Init CCtx's Local Dict with CCtxParams 2020-09-10 18:51:52 -04:00
W. Felix Handte db2aa25252 Decision for Whether to Attach Should be Based on CDict Config, not CCtx 2020-09-10 18:51:52 -04:00
W. Felix Handte a494111385 Move Prefetch Before Insertion; Speed Up ~6% 2020-09-10 18:51:52 -04:00
W. Felix Handte eede46a47e Misc Refactor of DDS Search Code 2020-09-10 18:51:52 -04:00
W. Felix Handte f1b428fdac Rename enableDedicatedDictSearch to dedicatedDictSearch in MatchState 
This makes it clear that not only is the feature allowed here, we're actually
using it, as opposed to the CCtxParam field, in which it's enabled, but we may
or may not be using it.
 2020-09-10 18:51:52 -04:00
W. Felix Handte 41012193ad Always Init CDict's enableDedicatedDictSearch Field 2020-09-10 18:51:52 -04:00
W. Felix Handte 34b545acb0 Add a ZSTD_dedicatedDictSearch ZSTD_dictMode_e to Allow Const Propagation 
Speed +1.5%.
 2020-09-10 18:51:52 -04:00
W. Felix Handte beefdb0d3d Fix ZSTD_c_forceAttachDict Bounds 2020-09-10 18:51:52 -04:00
W. Felix Handte c204110eff Make ZSTD_c_enableDedicatedDictSearch an Experimental Param 2020-09-10 18:51:52 -04:00
W. Felix Handte ae4ebf6b8c TODO: Comment 2020-09-10 18:51:52 -04:00
W. Felix Handte def62e2d3e Fix Compilation Warnings 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 9c628238d3 creating ZSTD_createCDict_advanced_internal 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 0a9787c3e1 changing to int for consistency 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte e29bc3a009 using dict mls instead of src mls 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 145c2d12f9 add hashtable head prefetching 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 5d5507788d change method name for consistency 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte b30f71becf pass correct cparams 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte a3f6e4026e removing wrong comment 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 71fda0362f making cctxParams a pointer 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 628559d0e4 loading dict using new algorithm 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 22705f0c93 adding dedicatedDictSearch algorithm 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 31e581bf65 adding enableDedicatedDictSearch to matchState_t 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 50550a14ad adding dedicated dict load method to lazy 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte 75b6360036 adding ZSTD_createCDict_advanced2 to zstd.h 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte b7dddbe89b always attach dict when using dedicatedDictSearch 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte e36a373df4 adding dedicatedDictSearch cParams helper methods 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte f10d4e313c adding ZSTD_dedicatedDictSearch_defaultCParameters variable 2020-09-10 18:51:52 -04:00
Bimba ShresthaandW. Felix Handte c497cb6716 Add ZSTD_c_enableDedicatedDictSearch Param 2020-09-10 18:51:52 -04:00
senhuang42 64bd68e44b Adjust ZSTD_createCDict_byReference() function, and check for cdict when using compressStream2 2020-09-10 13:42:26 -04:00
Nick Terrell da30a78c68 [lib] Bump version number to 1.4.6 2020-09-09 17:13:45 -07:00
Nick Terrell b92569a522 [doc] Document new build macros in lib/README.md 2020-09-09 17:13:16 -07:00
Nick Terrell aab4bf7b0d [linux-kernel] Add test that checks the ifdef hardwiring 2020-09-09 14:36:19 -07:00
Nick Terrell 79ded1b4a9 [lib] Add ZSTD_NO_UNUSED_FUNCTIONS macro to hide unused functions 
The unused function definitions are hidden behind a
`#ifndef ZSTD_NO_UNUSED_FUNCTIONS` check.

Initially hiding all functions which are unused and take up more than
2KB of stack space, because these will show up as warnings in the
Linux Kernel build system.
 2020-09-09 14:35:39 -07:00
Nick Terrell ac3a136b0a [lib] Replace 64-bit divisions with ZSTD_div64() 2020-09-09 14:35:39 -07:00
Nick Terrell a90779397a [lib] Reduce zstd stack usage by 1KB 2020-09-09 14:35:39 -07:00
Nick Terrell 046aca190f Fix ZSTD_initCStream_advanced() with no dictionary and static allocation 2020-09-09 14:35:39 -07:00
Nick Terrell e975de289c Add ZSTD_NO_INTRINSICS macro to avoid explicit intrinsics 2020-09-09 14:35:39 -07:00
Nick Terrell f91ed5c766 [lib] s/current/curr because it collides with Linux Kernel macro 2020-09-09 14:35:39 -07:00
Nick TerrellandGitHub 5e4efd22d4 Merge pull request #2291 from i-do-cpp/fix-compression-level-default 
Fix setParameter not falling back to default compression level
 2020-09-08 16:42:34 -07:00
Felix HandteandGitHub 8db661dd7f Merge pull request #2294 from felixhandte/makefile-lib-fix-var-order 
Fix Makefile Variable Concatenation Order
 2020-09-04 10:58:57 -04:00
W. Felix Handte 75bc289911 Fix Makefile Variable Concatenation Order 
Previously, this construct would add `-O3` onto the end of the compiler flags
variable, **after** `MOREFLAGS`, which meant that it was impossible to over-
ride. This commit fixes this order and should otherwise be a no-op.
 2020-09-03 17:30:29 -04:00
Nick TerrellandGitHub 6da8acd231 Merge pull request #2293 from allanjude/coverity 
Resolve Coverity 1432392 Unintentional integer overflow
 2020-09-03 13:58:45 -07:00
Allan Jude 8665793164 Resolve Coverity 1432392 Unintentional integer overflow 
Unintentional integer overflow (OVERFLOW_BEFORE_WIDEN)
overflow_before_widen: Potentially overflowing expression:
cdict->dictContentSize * 6U
with type unsigned int (32 bits, unsigned) is evaluated using 32-bit
arithmetic, and then used in a context that expects an expression of
type U64 (64 bits, unsigned).
 2020-09-03 19:31:50 +00:00