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102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/* LzFindMt.h -- multithreaded Match finder for LZ algorithms
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2018-07-04 : Igor Pavlov : Public domain */
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#ifndef __LZ_FIND_MT_H
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#define __LZ_FIND_MT_H
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#include "LzFind.h"
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#include "Threads.h"
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EXTERN_C_BEGIN
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#define kMtHashBlockSize (1 << 13)
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#define kMtHashNumBlocks (1 << 3)
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#define kMtHashNumBlocksMask (kMtHashNumBlocks - 1)
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#define kMtBtBlockSize (1 << 14)
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#define kMtBtNumBlocks (1 << 6)
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#define kMtBtNumBlocksMask (kMtBtNumBlocks - 1)
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typedef struct _CMtSync
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{
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BoolInt wasCreated;
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BoolInt needStart;
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BoolInt exit;
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BoolInt stopWriting;
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CThread thread;
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CAutoResetEvent canStart;
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CAutoResetEvent wasStarted;
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CAutoResetEvent wasStopped;
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CSemaphore freeSemaphore;
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CSemaphore filledSemaphore;
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BoolInt csWasInitialized;
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BoolInt csWasEntered;
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CCriticalSection cs;
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UInt32 numProcessedBlocks;
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} CMtSync;
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typedef UInt32 * (*Mf_Mix_Matches)(void *p, UInt32 matchMinPos, UInt32 *distances);
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/* kMtCacheLineDummy must be >= size_of_CPU_cache_line */
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#define kMtCacheLineDummy 128
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typedef void (*Mf_GetHeads)(const Byte *buffer, UInt32 pos,
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UInt32 *hash, UInt32 hashMask, UInt32 *heads, UInt32 numHeads, const UInt32 *crc);
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typedef struct _CMatchFinderMt
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{
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/* LZ */
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const Byte *pointerToCurPos;
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UInt32 *btBuf;
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UInt32 btBufPos;
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UInt32 btBufPosLimit;
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UInt32 lzPos;
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UInt32 btNumAvailBytes;
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UInt32 *hash;
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UInt32 fixedHashSize;
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UInt32 historySize;
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const UInt32 *crc;
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Mf_Mix_Matches MixMatchesFunc;
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/* LZ + BT */
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CMtSync btSync;
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Byte btDummy[kMtCacheLineDummy];
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/* BT */
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UInt32 *hashBuf;
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UInt32 hashBufPos;
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UInt32 hashBufPosLimit;
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UInt32 hashNumAvail;
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CLzRef *son;
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UInt32 matchMaxLen;
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UInt32 numHashBytes;
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UInt32 pos;
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const Byte *buffer;
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UInt32 cyclicBufferPos;
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UInt32 cyclicBufferSize; /* it must be historySize + 1 */
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UInt32 cutValue;
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/* BT + Hash */
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CMtSync hashSync;
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/* Byte hashDummy[kMtCacheLineDummy]; */
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/* Hash */
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Mf_GetHeads GetHeadsFunc;
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CMatchFinder *MatchFinder;
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} CMatchFinderMt;
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void MatchFinderMt_Construct(CMatchFinderMt *p);
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void MatchFinderMt_Destruct(CMatchFinderMt *p, ISzAllocPtr alloc);
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SRes MatchFinderMt_Create(CMatchFinderMt *p, UInt32 historySize, UInt32 keepAddBufferBefore,
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UInt32 matchMaxLen, UInt32 keepAddBufferAfter, ISzAllocPtr alloc);
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void MatchFinderMt_CreateVTable(CMatchFinderMt *p, IMatchFinder *vTable);
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void MatchFinderMt_ReleaseStream(CMatchFinderMt *p);
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EXTERN_C_END
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#endif
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