sharpetronics/zstd
1
0
Fork 0
mirror of https://github.com/facebook/zstd.git synced 2025-10-06 00:04:13 -04:00
Code Issues Projects Releases Wiki Activity

Improve LDM cparam validation logic

Browse Source
This commit is contained in:
Elliot Gorokhovsky 2022-11-21 15:39:18 -05:00
parent b1182fe242
commit c8d870fe52
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
lib/compress/zstd_compress.c
View File

@ -265,9 +265,9 @@ static int ZSTD_allocateChainTable(const ZSTD_strategy strategy,
return forDDSDict || ((strategy != ZSTD_fast) && !ZSTD_rowMatchFinderUsed(strategy, useRowMatchFinder));
}
/* Returns 1 if compression parameters are such that we should
/* Returns ZSTD_ps_enable if compression parameters are such that we should
* enable long distance matching (wlog >= 27, strategy >= btopt).
* Returns 0 otherwise.
* Returns ZSTD_ps_disable otherwise.
*/
static ZSTD_paramSwitch_e ZSTD_resolveEnableLdm(ZSTD_paramSwitch_e mode,
const ZSTD_compressionParameters* const cParams) {
@ -482,8 +482,8 @@ ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter param)
return bounds;
case ZSTD_c_enableLongDistanceMatching:
bounds.lowerBound = 0;
bounds.upperBound = 1;
bounds.lowerBound = (int)ZSTD_ps_auto;
bounds.upperBound = (int)ZSTD_ps_disable;
return bounds;
case ZSTD_c_ldmHashLog:
@ -854,6 +854,7 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
return (size_t)CCtxParams->enableDedicatedDictSearch;
case ZSTD_c_enableLongDistanceMatching :
BOUNDCHECK(ZSTD_c_enableLongDistanceMatching, value);
CCtxParams->ldmParams.enableLdm = (ZSTD_paramSwitch_e)value;
return CCtxParams->ldmParams.enableLdm;