| repo sync | baa3858 | 2013-07-26 17:53:31 -0700 | [diff] [blame] | 1 | /* LzFindMt.h -- multithreaded Match finder for LZ algorithms
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| 2 | 2009-02-07 : Igor Pavlov : Public domain */
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| 3 |
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| 4 | #ifndef __LZ_FIND_MT_H
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| 5 | #define __LZ_FIND_MT_H
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| 6 |
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| 7 | #include "LzFind.h"
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| 8 | #include "Threads.h"
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| 9 |
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| 10 | #ifdef __cplusplus
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| 11 | extern "C" {
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| 12 | #endif
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| 13 |
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| 14 | #define kMtHashBlockSize (1 << 13)
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| 15 | #define kMtHashNumBlocks (1 << 3)
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| 16 | #define kMtHashNumBlocksMask (kMtHashNumBlocks - 1)
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| 17 |
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| 18 | #define kMtBtBlockSize (1 << 14)
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| 19 | #define kMtBtNumBlocks (1 << 6)
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| 20 | #define kMtBtNumBlocksMask (kMtBtNumBlocks - 1)
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| 21 |
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| 22 | typedef struct _CMtSync
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| 23 | {
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| 24 | Bool wasCreated;
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| 25 | Bool needStart;
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| 26 | Bool exit;
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| 27 | Bool stopWriting;
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| 28 |
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| 29 | CThread thread;
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| 30 | CAutoResetEvent canStart;
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| 31 | CAutoResetEvent wasStarted;
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| 32 | CAutoResetEvent wasStopped;
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| 33 | CSemaphore freeSemaphore;
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| 34 | CSemaphore filledSemaphore;
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| 35 | Bool csWasInitialized;
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| 36 | Bool csWasEntered;
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| 37 | CCriticalSection cs;
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| 38 | UInt32 numProcessedBlocks;
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| 39 | } CMtSync;
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| 40 |
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| 41 | typedef UInt32 * (*Mf_Mix_Matches)(void *p, UInt32 matchMinPos, UInt32 *distances);
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| 42 |
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| 43 | /* kMtCacheLineDummy must be >= size_of_CPU_cache_line */
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| 44 | #define kMtCacheLineDummy 128
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| 45 |
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| 46 | typedef void (*Mf_GetHeads)(const Byte *buffer, UInt32 pos,
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| 47 | UInt32 *hash, UInt32 hashMask, UInt32 *heads, UInt32 numHeads, const UInt32 *crc);
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| 48 |
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| 49 | typedef struct _CMatchFinderMt
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| 50 | {
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| 51 | /* LZ */
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| 52 | const Byte *pointerToCurPos;
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| 53 | UInt32 *btBuf;
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| 54 | UInt32 btBufPos;
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| 55 | UInt32 btBufPosLimit;
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| 56 | UInt32 lzPos;
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| 57 | UInt32 btNumAvailBytes;
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| 58 |
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| 59 | UInt32 *hash;
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| 60 | UInt32 fixedHashSize;
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| 61 | UInt32 historySize;
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| 62 | const UInt32 *crc;
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| 63 |
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| 64 | Mf_Mix_Matches MixMatchesFunc;
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| 65 |
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| 66 | /* LZ + BT */
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| 67 | CMtSync btSync;
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| 68 | Byte btDummy[kMtCacheLineDummy];
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| 69 |
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| 70 | /* BT */
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| 71 | UInt32 *hashBuf;
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| 72 | UInt32 hashBufPos;
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| 73 | UInt32 hashBufPosLimit;
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| 74 | UInt32 hashNumAvail;
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| 75 |
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| 76 | CLzRef *son;
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| 77 | UInt32 matchMaxLen;
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| 78 | UInt32 numHashBytes;
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| 79 | UInt32 pos;
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| 80 | Byte *buffer;
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| 81 | UInt32 cyclicBufferPos;
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| 82 | UInt32 cyclicBufferSize; /* it must be historySize + 1 */
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| 83 | UInt32 cutValue;
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| 84 |
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| 85 | /* BT + Hash */
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| 86 | CMtSync hashSync;
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| 87 | /* Byte hashDummy[kMtCacheLineDummy]; */
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| 88 |
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| 89 | /* Hash */
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| 90 | Mf_GetHeads GetHeadsFunc;
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| 91 | CMatchFinder *MatchFinder;
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| 92 | } CMatchFinderMt;
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| 93 |
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| 94 | void MatchFinderMt_Construct(CMatchFinderMt *p);
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| 95 | void MatchFinderMt_Destruct(CMatchFinderMt *p, ISzAlloc *alloc);
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| 96 | SRes MatchFinderMt_Create(CMatchFinderMt *p, UInt32 historySize, UInt32 keepAddBufferBefore,
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| 97 | UInt32 matchMaxLen, UInt32 keepAddBufferAfter, ISzAlloc *alloc);
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| 98 | void MatchFinderMt_CreateVTable(CMatchFinderMt *p, IMatchFinder *vTable);
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| 99 | void MatchFinderMt_ReleaseStream(CMatchFinderMt *p);
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| 100 |
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| 101 | #ifdef __cplusplus
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| 102 | }
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| 103 | #endif
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| 104 |
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| 105 | #endif
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