mercurial-scm/hg: contrib/python-zstandard/zstd/compress/zstd

annotate contrib/python-zstandard/zstd/compress/zstd_fast.c @ 53042:cdd7bf612c7b stable tip

bundle-spec: properly format boolean parameter (issue6960) This was breaking automatic clone bundle generation. This changeset fixes it and add a test to catch it in the future.

author	Pierre-Yves David <pierre-yves.david@octobus.net>
date	Tue, 11 Mar 2025 02:29:42 +0100
parents	de7838053207
children

rev	line source
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	1 /*
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	3 * All rights reserved.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	4 *
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	5 * This source code is licensed under both the BSD-style license (found in the
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	7 * in the COPYING file in the root directory of this source tree).
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	8 * You may select, at your option, one of the above-listed licenses.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	9 */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	10
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	11 #include "zstd_compress_internal.h" /* ZSTD_hashPtr, ZSTD_count, ZSTD_storeSeq */
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	12 #include "zstd_fast.h"
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	13
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	14
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	15 void ZSTD_fillHashTable(ZSTD_matchState_t* ms,
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	16 const void* const end,
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	17 ZSTD_dictTableLoadMethod_e dtlm)
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	18 {
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	19 const ZSTD_compressionParameters* const cParams = &ms->cParams;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	20 U32* const hashTable = ms->hashTable;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	21 U32 const hBits = cParams->hashLog;
42070 675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	22 U32 const mls = cParams->minMatch;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	23 const BYTE* const base = ms->window.base;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	24 const BYTE* ip = base + ms->nextToUpdate;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	25 const BYTE* const iend = ((const BYTE*)end) - HASH_READ_SIZE;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	26 const U32 fastHashFillStep = 3;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	27
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	28 /* Always insert every fastHashFillStep position into the hash table.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	29 * Insert the other positions if their hash entry is empty.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	30 */
42070 675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	31 for ( ; ip + fastHashFillStep < iend + 2; ip += fastHashFillStep) {
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	32 U32 const current = (U32)(ip - base);
42070 675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	33 size_t const hash0 = ZSTD_hashPtr(ip, hBits, mls);
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	34 hashTable[hash0] = current;
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	35 if (dtlm == ZSTD_dtlm_fast) continue;
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	36 /* Only load extra positions for ZSTD_dtlm_full */
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	37 { U32 p;
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	38 for (p = 1; p < fastHashFillStep; ++p) {
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	39 size_t const hash = ZSTD_hashPtr(ip + p, hBits, mls);
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	40 if (hashTable[hash] == 0) { /* not yet filled */
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	41 hashTable[hash] = current + p;
675775c33ab6 zstandard: vendor python-zstandard 0.11 Gregory Szorc <gregory.szorc@gmail.com> parents: 40121 diff changeset	42 } } } }
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	43 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	44
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	45
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	46 FORCE_INLINE_TEMPLATE size_t
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	47 ZSTD_compressBlock_fast_generic(
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	48 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	49 void const* src, size_t srcSize,
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	50 U32 const mls)
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	51 {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	52 const ZSTD_compressionParameters* const cParams = &ms->cParams;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	53 U32* const hashTable = ms->hashTable;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	54 U32 const hlog = cParams->hashLog;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	55 /* support stepSize of 0 */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	56 size_t const stepSize = cParams->targetLength + !(cParams->targetLength) + 1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	57 const BYTE* const base = ms->window.base;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	58 const BYTE* const istart = (const BYTE*)src;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	59 /* We check ip0 (ip + 0) and ip1 (ip + 1) each loop */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	60 const BYTE* ip0 = istart;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	61 const BYTE* ip1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	62 const BYTE* anchor = istart;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	63 const U32 endIndex = (U32)((size_t)(istart - base) + srcSize);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	64 const U32 maxDistance = 1U << cParams->windowLog;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	65 const U32 validStartIndex = ms->window.dictLimit;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	66 const U32 prefixStartIndex = (endIndex - validStartIndex > maxDistance) ? endIndex - maxDistance : validStartIndex;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	67 const BYTE* const prefixStart = base + prefixStartIndex;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	68 const BYTE* const iend = istart + srcSize;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	69 const BYTE* const ilimit = iend - HASH_READ_SIZE;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	70 U32 offset_1=rep[0], offset_2=rep[1];
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	71 U32 offsetSaved = 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	72
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	73 /* init */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	74 DEBUGLOG(5, "ZSTD_compressBlock_fast_generic");
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	75 ip0 += (ip0 == prefixStart);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	76 ip1 = ip0 + 1;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	77 { U32 const maxRep = (U32)(ip0 - prefixStart);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	78 if (offset_2 > maxRep) offsetSaved = offset_2, offset_2 = 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	79 if (offset_1 > maxRep) offsetSaved = offset_1, offset_1 = 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	80 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	81
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	82 /* Main Search Loop */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	83 while (ip1 < ilimit) { /* < instead of <=, because check at ip0+2 */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	84 size_t mLength;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	85 BYTE const* ip2 = ip0 + 2;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	86 size_t const h0 = ZSTD_hashPtr(ip0, hlog, mls);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	87 U32 const val0 = MEM_read32(ip0);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	88 size_t const h1 = ZSTD_hashPtr(ip1, hlog, mls);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	89 U32 const val1 = MEM_read32(ip1);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	90 U32 const current0 = (U32)(ip0-base);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	91 U32 const current1 = (U32)(ip1-base);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	92 U32 const matchIndex0 = hashTable[h0];
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	93 U32 const matchIndex1 = hashTable[h1];
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	94 BYTE const* repMatch = ip2-offset_1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	95 const BYTE* match0 = base + matchIndex0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	96 const BYTE* match1 = base + matchIndex1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	97 U32 offcode;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	98 hashTable[h0] = current0; /* update hash table */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	99 hashTable[h1] = current1; /* update hash table */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	100
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	101 assert(ip0 + 1 == ip1);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	102
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	103 if ((offset_1 > 0) & (MEM_read32(repMatch) == MEM_read32(ip2))) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	104 mLength = ip2[-1] == repMatch[-1] ? 1 : 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	105 ip0 = ip2 - mLength;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	106 match0 = repMatch - mLength;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	107 offcode = 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	108 goto _match;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	109 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	110 if ((matchIndex0 > prefixStartIndex) && MEM_read32(match0) == val0) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	111 /* found a regular match */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	112 goto _offset;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	113 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	114 if ((matchIndex1 > prefixStartIndex) && MEM_read32(match1) == val1) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	115 /* found a regular match after one literal */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	116 ip0 = ip1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	117 match0 = match1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	118 goto _offset;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	119 }
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	120 { size_t const step = ((size_t)(ip0-anchor) >> (kSearchStrength - 1)) + stepSize;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	121 assert(step >= 2);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	122 ip0 += step;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	123 ip1 += step;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	124 continue;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	125 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	126 _offset: /* Requires: ip0, match0 */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	127 /* Compute the offset code */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	128 offset_2 = offset_1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	129 offset_1 = (U32)(ip0-match0);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	130 offcode = offset_1 + ZSTD_REP_MOVE;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	131 mLength = 0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	132 /* Count the backwards match length */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	133 while (((ip0>anchor) & (match0>prefixStart))
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	134 && (ip0[-1] == match0[-1])) { ip0--; match0--; mLength++; } /* catch up */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	135
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	136 _match: /* Requires: ip0, match0, offcode */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	137 /* Count the forward length */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	138 mLength += ZSTD_count(ip0+mLength+4, match0+mLength+4, iend) + 4;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	139 ZSTD_storeSeq(seqStore, (size_t)(ip0-anchor), anchor, iend, offcode, mLength-MINMATCH);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	140 /* match found */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	141 ip0 += mLength;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	142 anchor = ip0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	143 ip1 = ip0 + 1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	144
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	145 if (ip0 <= ilimit) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	146 /* Fill Table */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	147 assert(base+current0+2 > istart); /* check base overflow */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	148 hashTable[ZSTD_hashPtr(base+current0+2, hlog, mls)] = current0+2; /* here because current+2 could be > iend-8 */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	149 hashTable[ZSTD_hashPtr(ip0-2, hlog, mls)] = (U32)(ip0-2-base);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	150
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	151 while ( ((ip0 <= ilimit) & (offset_2>0)) /* offset_2==0 means offset_2 is invalidated */
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	152 && (MEM_read32(ip0) == MEM_read32(ip0 - offset_2)) ) {
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	153 /* store sequence */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	154 size_t const rLength = ZSTD_count(ip0+4, ip0+4-offset_2, iend) + 4;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	155 { U32 const tmpOff = offset_2; offset_2 = offset_1; offset_1 = tmpOff; } /* swap offset_2 <=> offset_1 */
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	156 hashTable[ZSTD_hashPtr(ip0, hlog, mls)] = (U32)(ip0-base);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	157 ip0 += rLength;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	158 ip1 = ip0 + 1;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	159 ZSTD_storeSeq(seqStore, 0 /litLen/, anchor, iend, 0 /offCode/, rLength-MINMATCH);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	160 anchor = ip0;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	161 continue; /* faster when present (confirmed on gcc-8) ... (?) */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	162 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	163 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	164 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	165
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	166 /* save reps for next block */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	167 rep[0] = offset_1 ? offset_1 : offsetSaved;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	168 rep[1] = offset_2 ? offset_2 : offsetSaved;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	169
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	170 /* Return the last literals size */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	171 return (size_t)(iend - anchor);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	172 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	173
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	174
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	175 size_t ZSTD_compressBlock_fast(
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	176 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	177 void const* src, size_t srcSize)
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	178 {
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	179 U32 const mls = ms->cParams.minMatch;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	180 assert(ms->dictMatchState == NULL);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	181 switch(mls)
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	182 {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	183 default: /* includes case 3 */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	184 case 4 :
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	185 return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 4);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	186 case 5 :
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	187 return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 5);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	188 case 6 :
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	189 return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 6);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	190 case 7 :
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	191 return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, 7);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	192 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	193 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	194
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	195 FORCE_INLINE_TEMPLATE
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	196 size_t ZSTD_compressBlock_fast_dictMatchState_generic(
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	197 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	198 void const* src, size_t srcSize, U32 const mls)
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	199 {
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	200 const ZSTD_compressionParameters* const cParams = &ms->cParams;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	201 U32* const hashTable = ms->hashTable;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	202 U32 const hlog = cParams->hashLog;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	203 /* support stepSize of 0 */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	204 U32 const stepSize = cParams->targetLength + !(cParams->targetLength);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	205 const BYTE* const base = ms->window.base;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	206 const BYTE* const istart = (const BYTE*)src;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	207 const BYTE* ip = istart;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	208 const BYTE* anchor = istart;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	209 const U32 prefixStartIndex = ms->window.dictLimit;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	210 const BYTE* const prefixStart = base + prefixStartIndex;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	211 const BYTE* const iend = istart + srcSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	212 const BYTE* const ilimit = iend - HASH_READ_SIZE;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	213 U32 offset_1=rep[0], offset_2=rep[1];
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	214 U32 offsetSaved = 0;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	215
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	216 const ZSTD_matchState_t* const dms = ms->dictMatchState;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	217 const ZSTD_compressionParameters* const dictCParams = &dms->cParams ;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	218 const U32* const dictHashTable = dms->hashTable;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	219 const U32 dictStartIndex = dms->window.dictLimit;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	220 const BYTE* const dictBase = dms->window.base;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	221 const BYTE* const dictStart = dictBase + dictStartIndex;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	222 const BYTE* const dictEnd = dms->window.nextSrc;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	223 const U32 dictIndexDelta = prefixStartIndex - (U32)(dictEnd - dictBase);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	224 const U32 dictAndPrefixLength = (U32)(ip - prefixStart + dictEnd - dictStart);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	225 const U32 dictHLog = dictCParams->hashLog;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	226
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	227 /* if a dictionary is still attached, it necessarily means that
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	228 * it is within window size. So we just check it. */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	229 const U32 maxDistance = 1U << cParams->windowLog;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	230 const U32 endIndex = (U32)((size_t)(ip - base) + srcSize);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	231 assert(endIndex - prefixStartIndex <= maxDistance);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	232 (void)maxDistance; (void)endIndex; /* these variables are not used when assert() is disabled */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	233
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	234 /* ensure there will be no no underflow
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	235 * when translating a dict index into a local index */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	236 assert(prefixStartIndex >= (U32)(dictEnd - dictBase));
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	237
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	238 /* init */
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	239 DEBUGLOG(5, "ZSTD_compressBlock_fast_dictMatchState_generic");
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	240 ip += (dictAndPrefixLength == 0);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	241 /* dictMatchState repCode checks don't currently handle repCode == 0
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	242 * disabling. */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	243 assert(offset_1 <= dictAndPrefixLength);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	244 assert(offset_2 <= dictAndPrefixLength);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	245
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	246 /* Main Search Loop */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	247 while (ip < ilimit) { /* < instead of <=, because repcode check at (ip+1) */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	248 size_t mLength;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	249 size_t const h = ZSTD_hashPtr(ip, hlog, mls);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	250 U32 const current = (U32)(ip-base);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	251 U32 const matchIndex = hashTable[h];
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	252 const BYTE* match = base + matchIndex;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	253 const U32 repIndex = current + 1 - offset_1;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	254 const BYTE* repMatch = (repIndex < prefixStartIndex) ?
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	255 dictBase + (repIndex - dictIndexDelta) :
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	256 base + repIndex;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	257 hashTable[h] = current; /* update hash table */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	258
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	259 if ( ((U32)((prefixStartIndex-1) - repIndex) >= 3) /* intentional underflow : ensure repIndex isn't overlapping dict + prefix */
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	260 && (MEM_read32(repMatch) == MEM_read32(ip+1)) ) {
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	261 const BYTE* const repMatchEnd = repIndex < prefixStartIndex ? dictEnd : iend;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	262 mLength = ZSTD_count_2segments(ip+1+4, repMatch+4, iend, repMatchEnd, prefixStart) + 4;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	263 ip++;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	264 ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, 0, mLength-MINMATCH);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	265 } else if ( (matchIndex <= prefixStartIndex) ) {
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	266 size_t const dictHash = ZSTD_hashPtr(ip, dictHLog, mls);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	267 U32 const dictMatchIndex = dictHashTable[dictHash];
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	268 const BYTE* dictMatch = dictBase + dictMatchIndex;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	269 if (dictMatchIndex <= dictStartIndex \|\|
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	270 MEM_read32(dictMatch) != MEM_read32(ip)) {
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	271 assert(stepSize >= 1);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	272 ip += ((ip-anchor) >> kSearchStrength) + stepSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	273 continue;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	274 } else {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	275 /* found a dict match */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	276 U32 const offset = (U32)(current-dictMatchIndex-dictIndexDelta);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	277 mLength = ZSTD_count_2segments(ip+4, dictMatch+4, iend, dictEnd, prefixStart) + 4;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	278 while (((ip>anchor) & (dictMatch>dictStart))
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	279 && (ip[-1] == dictMatch[-1])) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	280 ip--; dictMatch--; mLength++;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	281 } /* catch up */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	282 offset_2 = offset_1;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	283 offset_1 = offset;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	284 ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, offset + ZSTD_REP_MOVE, mLength-MINMATCH);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	285 }
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	286 } else if (MEM_read32(match) != MEM_read32(ip)) {
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	287 /* it's not a match, and we're not going to check the dictionary */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	288 assert(stepSize >= 1);
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	289 ip += ((ip-anchor) >> kSearchStrength) + stepSize;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	290 continue;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	291 } else {
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	292 /* found a regular match */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	293 U32 const offset = (U32)(ip-match);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	294 mLength = ZSTD_count(ip+4, match+4, iend) + 4;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	295 while (((ip>anchor) & (match>prefixStart))
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	296 && (ip[-1] == match[-1])) { ip--; match--; mLength++; } /* catch up */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	297 offset_2 = offset_1;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	298 offset_1 = offset;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	299 ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, offset + ZSTD_REP_MOVE, mLength-MINMATCH);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	300 }
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	301
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	302 /* match found */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	303 ip += mLength;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	304 anchor = ip;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	305
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	306 if (ip <= ilimit) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	307 /* Fill Table */
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	308 assert(base+current+2 > istart); /* check base overflow */
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	309 hashTable[ZSTD_hashPtr(base+current+2, hlog, mls)] = current+2; /* here because current+2 could be > iend-8 */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	310 hashTable[ZSTD_hashPtr(ip-2, hlog, mls)] = (U32)(ip-2-base);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	311
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	312 /* check immediate repcode */
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	313 while (ip <= ilimit) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	314 U32 const current2 = (U32)(ip-base);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	315 U32 const repIndex2 = current2 - offset_2;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	316 const BYTE* repMatch2 = repIndex2 < prefixStartIndex ?
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	317 dictBase - dictIndexDelta + repIndex2 :
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	318 base + repIndex2;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	319 if ( ((U32)((prefixStartIndex-1) - (U32)repIndex2) >= 3 /* intentional overflow */)
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	320 && (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	321 const BYTE* const repEnd2 = repIndex2 < prefixStartIndex ? dictEnd : iend;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	322 size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixStart) + 4;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	323 U32 tmpOffset = offset_2; offset_2 = offset_1; offset_1 = tmpOffset; /* swap offset_2 <=> offset_1 */
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	324 ZSTD_storeSeq(seqStore, 0, anchor, iend, 0, repLength2-MINMATCH);
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	325 hashTable[ZSTD_hashPtr(ip, hlog, mls)] = current2;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	326 ip += repLength2;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	327 anchor = ip;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	328 continue;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	329 }
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	330 break;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	331 }
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	332 }
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	333 }
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	334
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	335 /* save reps for next block */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	336 rep[0] = offset_1 ? offset_1 : offsetSaved;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	337 rep[1] = offset_2 ? offset_2 : offsetSaved;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	338
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	339 /* Return the last literals size */
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	340 return (size_t)(iend - anchor);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	341 }
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	342
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	343 size_t ZSTD_compressBlock_fast_dictMatchState(
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	344 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	345 void const* src, size_t srcSize)
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	346 {
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	347 U32 const mls = ms->cParams.minMatch;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	348 assert(ms->dictMatchState != NULL);
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	349 switch(mls)
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	350 {
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	351 default: /* includes case 3 */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	352 case 4 :
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	353 return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 4);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	354 case 5 :
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	355 return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 5);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	356 case 6 :
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	357 return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 6);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	358 case 7 :
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	359 return ZSTD_compressBlock_fast_dictMatchState_generic(ms, seqStore, rep, src, srcSize, 7);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	360 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	361 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	362
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	363
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	364 static size_t ZSTD_compressBlock_fast_extDict_generic(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	365 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	366 void const* src, size_t srcSize, U32 const mls)
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	367 {
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	368 const ZSTD_compressionParameters* const cParams = &ms->cParams;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	369 U32* const hashTable = ms->hashTable;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	370 U32 const hlog = cParams->hashLog;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	371 /* support stepSize of 0 */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	372 U32 const stepSize = cParams->targetLength + !(cParams->targetLength);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	373 const BYTE* const base = ms->window.base;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	374 const BYTE* const dictBase = ms->window.dictBase;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	375 const BYTE* const istart = (const BYTE*)src;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	376 const BYTE* ip = istart;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	377 const BYTE* anchor = istart;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	378 const U32 endIndex = (U32)((size_t)(istart - base) + srcSize);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	379 const U32 lowLimit = ZSTD_getLowestMatchIndex(ms, endIndex, cParams->windowLog);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	380 const U32 dictStartIndex = lowLimit;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	381 const BYTE* const dictStart = dictBase + dictStartIndex;
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	382 const U32 dictLimit = ms->window.dictLimit;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	383 const U32 prefixStartIndex = dictLimit < lowLimit ? lowLimit : dictLimit;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	384 const BYTE* const prefixStart = base + prefixStartIndex;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	385 const BYTE* const dictEnd = dictBase + prefixStartIndex;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	386 const BYTE* const iend = istart + srcSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	387 const BYTE* const ilimit = iend - 8;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	388 U32 offset_1=rep[0], offset_2=rep[1];
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	389
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	390 DEBUGLOG(5, "ZSTD_compressBlock_fast_extDict_generic");
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	391
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	392 /* switch to "regular" variant if extDict is invalidated due to maxDistance */
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	393 if (prefixStartIndex == dictStartIndex)
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	394 return ZSTD_compressBlock_fast_generic(ms, seqStore, rep, src, srcSize, mls);
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	395
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	396 /* Search Loop */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	397 while (ip < ilimit) { /* < instead of <=, because (ip+1) */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	398 const size_t h = ZSTD_hashPtr(ip, hlog, mls);
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	399 const U32 matchIndex = hashTable[h];
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	400 const BYTE* const matchBase = matchIndex < prefixStartIndex ? dictBase : base;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	401 const BYTE* match = matchBase + matchIndex;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	402 const U32 current = (U32)(ip-base);
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	403 const U32 repIndex = current + 1 - offset_1;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	404 const BYTE* const repBase = repIndex < prefixStartIndex ? dictBase : base;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	405 const BYTE* const repMatch = repBase + repIndex;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	406 hashTable[h] = current; /* update hash table */
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	407 assert(offset_1 <= current +1); /* check repIndex */
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	408
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	409 if ( (((U32)((prefixStartIndex-1) - repIndex) >= 3) /* intentional underflow */ & (repIndex > dictStartIndex))
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	410 && (MEM_read32(repMatch) == MEM_read32(ip+1)) ) {
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	411 const BYTE* const repMatchEnd = repIndex < prefixStartIndex ? dictEnd : iend;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	412 size_t const rLength = ZSTD_count_2segments(ip+1 +4, repMatch +4, iend, repMatchEnd, prefixStart) + 4;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	413 ip++;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	414 ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, 0, rLength-MINMATCH);
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	415 ip += rLength;
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	416 anchor = ip;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	417 } else {
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	418 if ( (matchIndex < dictStartIndex) \|\|
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	419 (MEM_read32(match) != MEM_read32(ip)) ) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	420 assert(stepSize >= 1);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	421 ip += ((ip-anchor) >> kSearchStrength) + stepSize;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	422 continue;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	423 }
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	424 { const BYTE* const matchEnd = matchIndex < prefixStartIndex ? dictEnd : iend;
69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	425 const BYTE* const lowMatchPtr = matchIndex < prefixStartIndex ? dictStart : prefixStart;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	426 U32 const offset = current - matchIndex;
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	427 size_t mLength = ZSTD_count_2segments(ip+4, match+4, iend, matchEnd, prefixStart) + 4;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	428 while (((ip>anchor) & (match>lowMatchPtr)) && (ip[-1] == match[-1])) { ip--; match--; mLength++; } /* catch up */
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	429 offset_2 = offset_1; offset_1 = offset; /* update offset history */
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	430 ZSTD_storeSeq(seqStore, (size_t)(ip-anchor), anchor, iend, offset + ZSTD_REP_MOVE, mLength-MINMATCH);
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	431 ip += mLength;
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	432 anchor = ip;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	433 } }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	434
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	435 if (ip <= ilimit) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	436 /* Fill Table */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	437 hashTable[ZSTD_hashPtr(base+current+2, hlog, mls)] = current+2;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	438 hashTable[ZSTD_hashPtr(ip-2, hlog, mls)] = (U32)(ip-2-base);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	439 /* check immediate repcode */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	440 while (ip <= ilimit) {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	441 U32 const current2 = (U32)(ip-base);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	442 U32 const repIndex2 = current2 - offset_2;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	443 const BYTE* const repMatch2 = repIndex2 < prefixStartIndex ? dictBase + repIndex2 : base + repIndex2;
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	444 if ( (((U32)((prefixStartIndex-1) - repIndex2) >= 3) & (repIndex2 > dictStartIndex)) /* intentional overflow */
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	445 && (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	446 const BYTE* const repEnd2 = repIndex2 < prefixStartIndex ? dictEnd : iend;
73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	447 size_t const repLength2 = ZSTD_count_2segments(ip+4, repMatch2+4, iend, repEnd2, prefixStart) + 4;
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	448 { U32 const tmpOffset = offset_2; offset_2 = offset_1; offset_1 = tmpOffset; } /* swap offset_2 <=> offset_1 */
de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	449 ZSTD_storeSeq(seqStore, 0 /litlen/, anchor, iend, 0 /offcode/, repLength2-MINMATCH);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	450 hashTable[ZSTD_hashPtr(ip, hlog, mls)] = current2;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	451 ip += repLength2;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	452 anchor = ip;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	453 continue;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	454 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	455 break;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	456 } } }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	457
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	458 /* save reps for next block */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	459 rep[0] = offset_1;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	460 rep[1] = offset_2;
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	461
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	462 /* Return the last literals size */
42937 69de49c4e39c zstandard: vendor python-zstandard 0.12 Gregory Szorc <gregory.szorc@gmail.com> parents: 42070 diff changeset	463 return (size_t)(iend - anchor);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	464 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	465
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	466
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	467 size_t ZSTD_compressBlock_fast_extDict(
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	468 ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	469 void const* src, size_t srcSize)
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	470 {
43994 de7838053207 zstandard: vendor python-zstandard 0.13.0 Gregory Szorc <gregory.szorc@gmail.com> parents: 42937 diff changeset	471 U32 const mls = ms->cParams.minMatch;
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	472 switch(mls)
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	473 {
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	474 default: /* includes case 3 */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	475 case 4 :
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	476 return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 4);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	477 case 5 :
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	478 return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 5);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	479 case 6 :
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	480 return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 6);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	481 case 7 :
40121 73fef626dae3 zstandard: vendor python-zstandard 0.10.1 Gregory Szorc <gregory.szorc@gmail.com> parents: 37495 diff changeset	482 return ZSTD_compressBlock_fast_extDict_generic(ms, seqStore, rep, src, srcSize, 7);
37495 b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	483 }
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0 Gregory Szorc <gregory.szorc@gmail.com> parents: diff changeset	484 }

Mercurial > public > mercurial-scm > hg

annotate contrib/python-zstandard/zstd/compress/zstd_fast.c @ 53042:cdd7bf612c7b stable tip