ddidderr/zstd-rs
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added duplication tests

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This commit is contained in:
Yann Collet
2016-01-08 17:27:50 +01:00
parent 6e1c4c6c65
commit 600962711d
2 changed files with 75 additions and 17 deletions
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lib/zstd_compress.c
+16 -17
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@@ -115,8 +115,8 @@ struct ZSTD_CCtx_s
void* workSpace;
size_t workSpaceSize;
size_t blockSize;
void* headerBuffer;
size_t hbSize;
char headerBuffer[ZSTD_frameHeaderSize_max];
seqStore_t seqStore; /* sequences storage ptrs */
@@ -210,8 +210,8 @@ static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
zc->seqStore.litLengthStart = zc->seqStore.litStart + blockSize;
zc->seqStore.matchLengthStart = zc->seqStore.litLengthStart + (blockSize>>2);
zc->seqStore.dumpsStart = zc->seqStore.matchLengthStart + (blockSize>>2);
zc->headerBuffer = (char*)zc->workSpace + zc->workSpaceSize - g_hbSize;
zc->hbSize = 0;
zc->stage = 0;
return 0;
}
@@ -1961,28 +1961,27 @@ size_t ZSTD_compress_insertDictionary(ZSTD_CCtx* zc, const void* src, size_t src
* @return : 0, or an error code */
size_t ZSTD_duplicateCCtx(ZSTD_CCtx* dstCCtx, const ZSTD_CCtx* srcCCtx)
{
void* dstWorkSpace = dstCCtx->workSpace;
size_t dstWorkSpaceSize = dstCCtx->workSpaceSize;
const U32 contentLog = (srcCCtx->params.strategy == ZSTD_fast) ? 1 : srcCCtx->params.contentLog;
const size_t tableSpace = ((1 << contentLog) + (1 << srcCCtx->params.hashLog)) * sizeof(U32);
const size_t blockSize = MIN(BLOCKSIZE, (size_t)1 << srcCCtx->params.windowLog);
const size_t neededSpace = tableSpace + (3*blockSize);
if (srcCCtx->stage!=0) return ERROR(stage_wrong);
if (dstWorkSpaceSize < neededSpace)
{
free(dstWorkSpace);
dstWorkSpaceSize = neededSpace;
dstWorkSpace = malloc(dstWorkSpaceSize);
if (dstWorkSpace==NULL) return ERROR(memory_allocation);
}
ZSTD_resetCCtx_advanced(dstCCtx, srcCCtx->params);
memcpy(dstCCtx, srcCCtx, sizeof(*dstCCtx));
dstCCtx->workSpace = dstWorkSpace;
dstCCtx->workSpaceSize = dstWorkSpaceSize;
/* copy tables */
memcpy(dstCCtx->hashTable, srcCCtx->hashTable, tableSpace);
memcpy(dstWorkSpace, srcCCtx->workSpace, tableSpace);
/* copy frame header */
dstCCtx->hbSize = srcCCtx->hbSize;
memcpy(dstCCtx->headerBuffer , srcCCtx->headerBuffer, srcCCtx->hbSize);
/* copy dictionary pointers */
dstCCtx->nextToUpdate= srcCCtx->nextToUpdate;
dstCCtx->nextSrc = srcCCtx->nextSrc;
dstCCtx->base = srcCCtx->base;
dstCCtx->dictBase = srcCCtx->dictBase;
dstCCtx->dictLimit = srcCCtx->dictLimit;
dstCCtx->lowLimit = srcCCtx->lowLimit;
return 0;
}