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created ZSTD_storeSeqOnly()

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makes it possible to register a sequence without copying its literals.
This commit is contained in:
Yann Collet
2024-12-20 10:36:04 -08:00
parent 125f05282b
commit a00f45a037
2 changed files with 57 additions and 28 deletions
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lib/compress/zstd_compress.c
+5 -4
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@@ -6666,9 +6666,11 @@ ZSTD_copySequencesToSeqStoreExplicitBlockDelim(ZSTD_CCtx* cctx,
}
size_t
ZSTD_copySequencesToSeqStoreNoBlockDelim(ZSTD_CCtx* cctx, ZSTD_sequencePosition* seqPos,
ZSTD_copySequencesToSeqStoreNoBlockDelim(ZSTD_CCtx* cctx,
ZSTD_sequencePosition* seqPos,
const ZSTD_Sequence* const inSeqs, size_t inSeqsSize,
const void* src, size_t blockSize, ZSTD_paramSwitch_e externalRepSearch)
const void* src, size_t blockSize,
ZSTD_paramSwitch_e externalRepSearch)
{
U32 idx = seqPos->idx;
U32 startPosInSequence = seqPos->posInSequence;
@@ -6855,7 +6857,7 @@ static size_t determine_blockSize(ZSTD_sequenceFormat_e mode,
}
}
/* Compress, block-by-block, all of the sequences given.
/* Compress all provided sequences, block-by-block.
*
* Returns the cumulative size of all compressed blocks (including their headers),
* otherwise a ZSTD error.
@@ -6896,7 +6898,6 @@ ZSTD_compressSequences_internal(ZSTD_CCtx* cctx,
FORWARD_IF_ERROR(blockSize, "Error while trying to determine block size");
assert(blockSize <= remaining);
ZSTD_resetSeqStore(&cctx->seqStore);
DEBUGLOG(5, "Working on new block. Blocksize: %zu (total:%zu)", blockSize, (ip - (const BYTE*)src) + blockSize);
additionalByteAdjustment = sequenceCopier(cctx, &seqPos, inSeqs, inSeqsSize, ip, blockSize, cctx->appliedParams.searchForExternalRepcodes);
FORWARD_IF_ERROR(additionalByteAdjustment, "Bad sequence copy");