From 48deab92de4c507720903b959c2223b985a2a831 Mon Sep 17 00:00:00 2001 From: "W. Felix Handte" Date: Fri, 25 May 2018 15:19:37 -0400 Subject: [PATCH] Allow Different Dict Attachment Cut-Offs for Different Strategies --- lib/compress/zstd_compress.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c index 46a3fe541..68beea0c9 100644 --- a/lib/compress/zstd_compress.c +++ b/lib/compress/zstd_compress.c @@ -1207,7 +1207,18 @@ static size_t ZSTD_resetCCtx_usingCDict(ZSTD_CCtx* cctx, /* We have a choice between copying the dictionary context into the working * context, or referencing the dictionary context from the working context * in-place. We decide here which strategy to use. */ - const int attachDict = ( pledgedSrcSize <= 8 KB + const U64 attachDictSizeCutoffs[(unsigned)ZSTD_btultra+1] = { + 8 KB, /* unused */ + 8 KB, /* ZSTD_fast */ + 16 KB, /* ZSTD_dfast */ + 16 KB, /* ZSTD_greedy */ + 16 KB, /* ZSTD_lazy */ + 16 KB, /* ZSTD_lazy2 */ + 16 KB, /* ZSTD_btlazy2 */ + 16 KB, /* ZSTD_btopt */ + 16 KB /* ZSTD_btultra */ + }; + const int attachDict = ( pledgedSrcSize <= attachDictSizeCutoffs[cdict->cParams.strategy] || pledgedSrcSize == ZSTD_CONTENTSIZE_UNKNOWN ) && !params.forceWindow /* dictMatchState isn't correctly * handled in _enforceMaxDist */ -- 2.47.2