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Remove one malloc/free from compression

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By making the buffer part of the zstd context structure, one malloc/free
can be removed from the compression.
This commit is contained in:
xaphier 2015-10-10 12:14:51 +02:00
parent be50aaa0ee
commit 77ee44c7b6
1 changed files with 2 additions and 7 deletions
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9
lib/zstd.c
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@ -314,6 +314,7 @@ typedef struct ZSTD_Cctx_s
#else #else
U32 hashTable[HASH_TABLESIZE]; U32 hashTable[HASH_TABLESIZE];
#endif #endif
BYTE buffer[WORKPLACESIZE];
} cctxi_t; } cctxi_t;
@ -321,12 +322,7 @@ ZSTD_Cctx* ZSTD_createCCtx(void)
{ {
ZSTD_Cctx* ctx = (ZSTD_Cctx*) malloc( sizeof(ZSTD_Cctx) ); ZSTD_Cctx* ctx = (ZSTD_Cctx*) malloc( sizeof(ZSTD_Cctx) );
if (ctx==NULL) return NULL; if (ctx==NULL) return NULL;
ctx->seqStore.buffer = malloc(WORKPLACESIZE); ctx->seqStore.buffer = ctx->buffer;
if (ctx->seqStore.buffer==NULL)
{
free(ctx);
return NULL;
}
ctx->seqStore.offsetStart = (U32*) (ctx->seqStore.buffer); ctx->seqStore.offsetStart = (U32*) (ctx->seqStore.buffer);
ctx->seqStore.offCodeStart = (BYTE*) (ctx->seqStore.offsetStart + (BLOCKSIZE>>2)); ctx->seqStore.offCodeStart = (BYTE*) (ctx->seqStore.offsetStart + (BLOCKSIZE>>2));
ctx->seqStore.litStart = ctx->seqStore.offCodeStart + (BLOCKSIZE>>2); ctx->seqStore.litStart = ctx->seqStore.offCodeStart + (BLOCKSIZE>>2);
@ -344,7 +340,6 @@ void ZSTD_resetCCtx(ZSTD_Cctx* ctx)
size_t ZSTD_freeCCtx(ZSTD_Cctx* ctx) size_t ZSTD_freeCCtx(ZSTD_Cctx* ctx)
{ {
free(ctx->seqStore.buffer);
free(ctx); free(ctx);
return 0; return 0;
} }