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a couple performance improvement changes for ldm

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This commit is contained in:
Quentin Carbonneaux
2021-01-20 00:54:20 -08:00
parent 7e6729055a
commit 1e65711ca5
4 changed files with 43 additions and 44 deletions
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lib/compress/zstd_compress.c
+3 -3
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@@ -1723,11 +1723,11 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
/* ldm bucketOffsets table */
if (params.ldmParams.enableLdm) {
/* TODO: avoid memset? */
size_t const ldmBucketSize =
size_t const numBuckets =
((size_t)1) << (params.ldmParams.hashLog -
params.ldmParams.bucketSizeLog);
zc->ldmState.bucketOffsets = ZSTD_cwksp_reserve_buffer(ws, ldmBucketSize);
ZSTD_memset(zc->ldmState.bucketOffsets, 0, ldmBucketSize);
zc->ldmState.bucketOffsets = ZSTD_cwksp_reserve_buffer(ws, numBuckets);
ZSTD_memset(zc->ldmState.bucketOffsets, 0, numBuckets);
}
/* sequences storage */