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Only Reset Indexing in ZSTD_resetCCtx_internal() When Necessary

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This commit is contained in:
W. Felix Handte 2019-09-10 17:55:41 -04:00
parent 9968a53e91
commit f31ef28ff8
1 changed files with 11 additions and 1 deletions
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12
lib/compress/zstd_compress.c
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@ -1398,6 +1398,14 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
size_t const matchStateSize = ZSTD_sizeof_matchState(&params.cParams, /* forCCtx */ 1);
size_t const maxNbLdmSeq = ZSTD_ldm_getMaxNbSeq(params.ldmParams, blockSize);
ZSTD_indexResetPolicy_e needsIndexReset = ZSTDirp_continue;
if (ZSTD_indexTooCloseToMax(zc->blockState.matchState.window)) {
needsIndexReset = ZSTDirp_reset;
}
ZSTD_cwksp_bump_oversized_duration(ws, 0);
/* Check if workspace is large enough, alloc a new one if needed */
{ size_t const cctxSpace = zc->staticSize ? sizeof(ZSTD_CCtx) : 0;
size_t const entropySpace = HUF_WORKSPACE_SIZE;
@ -1430,6 +1438,8 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
RETURN_ERROR_IF(zc->staticSize, memory_allocation, "static cctx : no resize");
needsIndexReset = ZSTDirp_reset;
ZSTD_cwksp_free(ws, zc->customMem);
FORWARD_IF_ERROR(ZSTD_cwksp_create(ws, neededSpace, zc->customMem));
@ -1500,7 +1510,7 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
ws,
&params.cParams,
crp,
ZSTDirp_reset,
needsIndexReset,
ZSTD_resetTarget_CCtx));
/* ldm hash table */