krak/zstd
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Code Issues Releases 1 Activity

Joined seqStore initialization at dispatch point

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This commit is contained in:
Yann Collet
2016-06-17 12:54:52 +02:00
parent 510cff3570
commit 19cab46f2f
5 changed files with 5 additions and 11 deletions
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1
.gitignore vendored
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@@ -13,6 +13,7 @@
*.dylib
# Executables
zstd
*.exe
*.out
*.app

1
Makefile
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@@ -51,6 +51,7 @@ all:
zstdprogram:
$(MAKE) -C $(PRGDIR)
mv $(PRGDIR)/zstd .
zlibwrapper:
$(MAKE) -C $(ZSTDDIR) all

11
lib/compress/zstd_compress.c
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@@ -1128,7 +1128,6 @@ void ZSTD_compressBlock_fast_generic(ZSTD_CCtx* cctx,
size_t offset_1=cctx->rep[0], offset_2=cctx->rep[1];
/* init */
ZSTD_resetSeqStore(seqStorePtr);
ip += (ip==lowest);
{ U32 const maxRep = (U32)(ip-lowest);
if (offset_1 > maxRep) offset_1 = 0;
@@ -1239,7 +1238,6 @@ static void ZSTD_compressBlock_fast_extDict_generic(ZSTD_CCtx* ctx,
U32 offset_1=ctx->rep[0], offset_2=ctx->rep[1];
/* init */
ZSTD_resetSeqStore(seqStorePtr);
/* skip first position to avoid read overflow during repcode match check */
hashTable[ZSTD_hashPtr(ip, hBits, mls)] = (U32)(ip-base);
ip++;
@@ -1743,7 +1741,6 @@ void ZSTD_compressBlock_lazy_generic(ZSTD_CCtx* ctx,
/* init */
ip += (ip==base);
ctx->nextToUpdate3 = ctx->nextToUpdate;
ZSTD_resetSeqStore(seqStorePtr);
{ U32 i;
U32 const maxRep = (U32)(ip-base);
for (i=0; i<ZSTD_REP_INIT; i++) {
@@ -1913,7 +1910,6 @@ void ZSTD_compressBlock_lazy_extDict_generic(ZSTD_CCtx* ctx,
{ U32 i; for (i=0; i<ZSTD_REP_INIT; i++) rep[i]=ctx->rep[i]; }
ctx->nextToUpdate3 = ctx->nextToUpdate;
ZSTD_resetSeqStore(seqStorePtr);
ip += (ip == prefixStart);
/* Match Loop */
@@ -2097,11 +2093,7 @@ typedef void (*ZSTD_blockCompressor) (ZSTD_CCtx* ctx, const void* src, size_t sr
static ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, int extDict)
{
static const ZSTD_blockCompressor blockCompressor[2][6] = {
#if 1
{ ZSTD_compressBlock_fast, ZSTD_compressBlock_greedy, ZSTD_compressBlock_lazy, ZSTD_compressBlock_lazy2, ZSTD_compressBlock_btlazy2, ZSTD_compressBlock_btopt },
#else
{ ZSTD_compressBlock_fast_extDict, ZSTD_compressBlock_greedy_extDict, ZSTD_compressBlock_lazy_extDict,ZSTD_compressBlock_lazy2_extDict, ZSTD_compressBlock_btlazy2_extDict, ZSTD_compressBlock_btopt_extDict },
#endif
{ ZSTD_compressBlock_fast_extDict, ZSTD_compressBlock_greedy_extDict, ZSTD_compressBlock_lazy_extDict,ZSTD_compressBlock_lazy2_extDict, ZSTD_compressBlock_btlazy2_extDict, ZSTD_compressBlock_btopt_extDict }
};
@@ -2111,8 +2103,9 @@ static ZSTD_blockCompressor ZSTD_selectBlockCompressor(ZSTD_strategy strat, int
static size_t ZSTD_compressBlock_internal(ZSTD_CCtx* zc, void* dst, size_t dstCapacity, const void* src, size_t srcSize)
{
ZSTD_blockCompressor blockCompressor = ZSTD_selectBlockCompressor(zc->params.cParams.strategy, zc->lowLimit < zc->dictLimit);
ZSTD_blockCompressor const blockCompressor = ZSTD_selectBlockCompressor(zc->params.cParams.strategy, zc->lowLimit < zc->dictLimit);
if (srcSize < MIN_CBLOCK_SIZE+ZSTD_blockHeaderSize+1) return 0; /* don't even attempt compression below a certain srcSize */
ZSTD_resetSeqStore(&(zc->seqStore));
blockCompressor(zc, src, srcSize);
return ZSTD_compressSequences(zc, dst, dstCapacity, srcSize);
}

2
lib/compress/zstd_opt.h
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@@ -465,7 +465,6 @@ void ZSTD_compressBlock_opt_generic(ZSTD_CCtx* ctx,
/* init */
ctx->nextToUpdate3 = ctx->nextToUpdate;
ZSTD_resetSeqStore(seqStorePtr);
ZSTD_rescaleFreqs(seqStorePtr);
ip += (ip==prefixStart);
{ U32 i; for (i=0; i<ZSTD_REP_INIT; i++) rep[i]=ctx->rep[i]; }
@@ -757,7 +756,6 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
{ U32 i; for (i=0; i<ZSTD_REP_INIT; i++) rep[i]=ctx->rep[i]; }
ctx->nextToUpdate3 = ctx->nextToUpdate;
ZSTD_resetSeqStore(seqStorePtr);
ZSTD_rescaleFreqs(seqStorePtr);
ip += (ip==prefixStart);

1
programs/.gitignore vendored
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@@ -50,3 +50,4 @@ afl
# Misc files
*.bat
fileTests.sh
dirTest*