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ZSTDMT : minor CCtx memory optimization

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can be useful when a compression job only has small amount of data to compress.
This commit is contained in:
Yann Collet 2018-01-16 15:34:41 -08:00
parent 2e23333094
commit 6025465e42
1 changed files with 3 additions and 3 deletions
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6
lib/compress/zstdmt_compress.c
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@ -346,7 +346,7 @@ void ZSTDMT_compressChunk(void* jobDescription)
assert(job->firstChunk); /* only allowed for first job */
if (ZSTD_isError(initError)) { job->cSize = initError; goto _endJob; }
} else { /* srcStart points at reloaded section */
U64 const pledgedSrcSize = job->firstChunk ? job->fullFrameSize : ZSTD_CONTENTSIZE_UNKNOWN;
U64 const pledgedSrcSize = job->firstChunk ? job->fullFrameSize : job->srcSize;
ZSTD_CCtx_params jobParams = job->params; /* do not modify job->params ! copy it, modify the copy */
{ size_t const forceWindowError = ZSTD_CCtxParam_setParameter(&jobParams, ZSTD_p_forceMaxWindow, !job->firstChunk);
if (ZSTD_isError(forceWindowError)) {
@ -355,7 +355,7 @@ void ZSTDMT_compressChunk(void* jobDescription)
} }
{ size_t const initError = ZSTD_compressBegin_advanced_internal(cctx,
job->srcStart, job->prefixSize, ZSTD_dm_rawContent, /* load dictionary in "content-only" mode (no header analysis) */
NULL,
NULL, /*cdict*/
jobParams, pledgedSrcSize);
if (ZSTD_isError(initError)) {
job->cSize = initError;
@ -404,8 +404,8 @@ void ZSTDMT_compressChunk(void* jobDescription)
if (ZSTD_isError(cSize)) { job->cSize = cSize; goto _endJob; }
/* stats */
job->cSize += cSize;
job->readSize = job->srcSize;
}
job->readSize = job->srcSize;
}
#endif