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added support for multithreading parameters

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This commit is contained in:
Yann Collet
2017-06-01 18:44:06 -07:00
parent c4a5a21c5c
commit c35e535002
4 changed files with 37 additions and 11 deletions
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lib/compress/zstd_compress.c
+28 -3
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@@ -157,6 +157,7 @@ struct ZSTD_CCtx_s {
U32 frameEnded;
/* Multi-threading */
U32 nbThreads;
ZSTDMT_CCtx* mtctx;
};
@@ -353,9 +354,33 @@ size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, unsigned v
case ZSTD_p_forceMaxWindow : /* Force back-references to remain < windowSize,
* even when referencing into Dictionary content
* default : 0 when using a CDict, 1 when using a Prefix */
cctx->forceWindow = value>0;
cctx->loadedDictEnd = 0;
return 0;
cctx->forceWindow = value>0;
cctx->loadedDictEnd = 0;
return 0;
case ZSTD_p_nbThreads:
if (value==0) return 0;
#ifndef ZSTD_MULTITHREAD
if (value > 1) return ERROR(compressionParameter_unsupported);
#endif
if ((value>1) && (cctx->nbThreads != value)) {
ZSTDMT_freeCCtx(cctx->mtctx);
cctx->nbThreads = value;
cctx->mtctx = ZSTDMT_createCCtx(value);
if (cctx->mtctx == NULL) return ERROR(memory_allocation);
}
cctx->nbThreads = 1;
return 0;
case ZSTDMT_p_jobSize:
if (cctx->nbThreads <= 1) return ERROR(compressionParameter_unsupported);
assert(cctx->mtctx != NULL);
return ZSTDMT_setMTCtxParameter(cctx->mtctx, ZSTDMT_p_sectionSize, value);
case ZSTDMT_p_overlapSizeLog:
if (cctx->nbThreads <= 1) return ERROR(compressionParameter_unsupported);
assert(cctx->mtctx != NULL);
return ZSTDMT_setMTCtxParameter(cctx->mtctx, ZSTDMT_p_overlapSectionLog, value);
case ZSTD_p_rawContentDict : /* load dictionary in "content-only" mode (no header analysis) (default:0) */
cctx->forceRawDict = value>0;