krak/zstd
krak/zstd
1
0
Fork 0
mirror of https://github.com/facebook/zstd.git synced 2025-03-07 01:10:04 +02:00
Code Issues Releases 1 Activity

fixed performance regression with ZSTD_decompress() on small files

Browse Source 
memset() was a quick fix to initialization problems,
but initialize too much space (tables, buffers)
which show up in decompression speed of ZSTD_decompress()
since it needs to recreate DCtx at each invocation.

Fixed by only initialization relevant pointers and size fields.
This commit is contained in:
Yann Collet 2017-05-24 13:15:19 -07:00
parent 11ea2f7fda
commit 2e4db3e531
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/decompress/zstd_decompress.c
View File

@ -195,11 +195,16 @@ ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem)
dctx = (ZSTD_DCtx*)ZSTD_malloc(sizeof(ZSTD_DCtx), customMem);
if (!dctx) return NULL;
memset(dctx, 0, sizeof(*dctx));
memcpy(&dctx->customMem, &customMem, sizeof(customMem));
ZSTD_decompressBegin(dctx); /* cannot fail */
dctx->streamStage = zdss_init;
dctx->maxWindowSize = ZSTD_MAXWINDOWSIZE_DEFAULT;
dctx->ddict = NULL;
dctx->ddictLocal = NULL;
dctx->inBuff = NULL;
dctx->outBuff = NULL;
dctx->inBuffSize = 0;
dctx->outBuffSize= 0;
return dctx;
}