函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\zstd\decompress.c Create Date:2022-07-27 08:05:10
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ZSTD_decompressSequencesLong

函数原型：static size_t ZSTD_decompressSequencesLong(ZSTD_DCtx *dctx, void *dst, size_t maxDstSize, const void *seqStart, size_t seqSize)

返回类型：size_t

参数：

类型参数名称
ZSTD_DCtx *dctx
void *dst
size_tmaxDstSize
const void *seqStart
size_tseqSize
1350  ip等于seqStart
1351  iend等于ip加seqSize
1352  ostart等于dst
1353  oend等于ostart加maxDstSize
1354  op等于ostart
1355  litPtr等于litPtr
1356  litEnd等于litPtr加litSize
1357  base等于base
1358  vBase等于vBase
1359  dictEnd等于dictEnd
1360  windowSize等于windowSize
1365  seqHSize等于ZSTD_decodeSeqHeaders(dctx, & nbSeq, ip, seqSize)
1366  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:seqHSize
1368  ip加等于seqHSize
1372  如果nbSeq则
1376  sequences等于workspace
1377  seqAdvance等于-************************************** shared macros(nbSeq, ADVANCED_SEQS)
1381  fseEntropy等于1
1384  以i小于umber of repcodes 循环prevOffset[i]等于rep[i]
1387  base等于base
1388  pos等于op减base
1389  gotoDict等于dictEnd减base
1391  FSE_initDState( & stateLL, & DStream, LLTptr)
1392  FSE_initDState( & stateOffb, & DStream, OFTptr)
1393  FSE_initDState( & stateML, & DStream, MLTptr)
1396  以BIT_reloadDStream( & DStream)小于等于BIT_DStream_completed且seqNb小于seqAdvance循环
1397  sequences[seqNb]等于ZSTD_decodeSequenceLong( & seqState, windowSize)
1399  如果seqNb小于seqAdvance则返回:-***************************************** Error codes handling(corruption_detected)
1403  以BIT_reloadDStream( & (DStream))小于等于BIT_DStream_completed且seqNb小于nbSeq循环
1404  sequence等于ZSTD_decodeSequenceLong( & seqState, windowSize)
1405  oneSeqSize等于ZSTD_execSequenceLong(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STOSEQ_MASK], & litPtr, litEnd, base, vBase, dictEnd)
1407  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:oneSeqSize
1409  ZSTD_PREFETCH(match)
1410  sequences[seqNb & STOSEQ_MASK]等于sequence
1411  op加等于oneSeqSize
1413  如果seqNb小于nbSeq则返回:-***************************************** Error codes handling(corruption_detected)
1417  seqNb减等于seqAdvance
1418  以seqNb小于nbSeq循环
1419  oneSeqSize等于ZSTD_execSequenceLong(op, oend, sequences[seqNb & STOSEQ_MASK], & litPtr, litEnd, base, vBase, dictEnd)
1420  如果ZSTD_isError() - tells if a size_t function result is an error code*@code: The function result to check for error.* Return: Non-zero iff the code is an error.则返回:oneSeqSize
1422  op加等于oneSeqSize
1428  以i小于umber of repcodes 循环rep[i]等于prevOffset[i]
1435  lastLLSize等于litEnd减litPtr
1436  如果lastLLSize大于oend减op则返回:-***************************************** Error codes handling(dstSize_tooSmall)
1438  内存复制(op, litPtr, lastLLSize)
1439  op加等于lastLLSize
1442  返回:op减ostart
调用者
名称描述
ZSTD_decompressBlock_internal