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ZSTDMT can now work in non-blocking mode with 1 thread

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it still fallbacks to single-thread blocking invocation
when input is small (<1job)
or when invoking ZSTDMT_compress(), which is blocking.

Also : fixed a bug in new block-granular compression routine.
This commit is contained in:
Yann Collet
2018-01-16 15:28:43 -08:00
parent 8e83c5c910
commit 2e23333094
5 changed files with 57 additions and 38 deletions
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lib/compress/zstdmt_compress.h
+1 -1
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@@ -85,7 +85,7 @@ ZSTDLIB_API size_t ZSTDMT_initCStream_usingCDict(ZSTDMT_CCtx* mtctx,
* List of parameters that can be set using ZSTDMT_setMTCtxParameter() */
typedef enum {
ZSTDMT_p_jobSize, /* Each job is compressed in parallel. By default, this value is dynamically determined depending on compression parameters. Can be set explicitly here. */
ZSTDMT_p_overlapSectionLog /* Each job may reload a part of previous job to enhance compressionr ratio; 0 == no overlap, 6(default) == use 1/8th of window, >=9 == use full window */
ZSTDMT_p_overlapSectionLog /* Each job may reload a part of previous job to enhance compressionr ratio; 0 == no overlap, 6(default) == use 1/8th of window, >=9 == use full window. This is a "sticky" parameter : its value will be re-used on next compression job */
} ZSTDMT_parameter;
/* ZSTDMT_setMTCtxParameter() :