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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2022-02-09 23:47:25 +0100
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2022-02-10 01:21:17 +0100
commit1ef05f24e28938c7a0608b4c6b369094d1dccaa6 (patch)
tree680a5b679c78cd999045abf207bfc7363aa1d9b9 /src/Common/lzma/LzFindMt.h
parent302dc37fb9baa45c5864af533664c4139e209590 (diff)
downloadVeraCrypt-1ef05f24e28938c7a0608b4c6b369094d1dccaa6.tar.gz
VeraCrypt-1ef05f24e28938c7a0608b4c6b369094d1dccaa6.zip
Windows: Reduce the size of installers by almost 50% by using LZMA compression instead of DEFLATE
Diffstat (limited to 'src/Common/lzma/LzFindMt.h')
-rw-r--r--src/Common/lzma/LzFindMt.h109
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diff --git a/src/Common/lzma/LzFindMt.h b/src/Common/lzma/LzFindMt.h
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+/* LzFindMt.h -- multithreaded Match finder for LZ algorithms
+2021-07-12 : Igor Pavlov : Public domain */
+
+#ifndef __LZ_FIND_MT_H
+#define __LZ_FIND_MT_H
+
+#include "LzFind.h"
+#include "Threads.h"
+
+EXTERN_C_BEGIN
+
+typedef struct _CMtSync
+{
+ UInt32 numProcessedBlocks;
+ CThread thread;
+ UInt64 affinity;
+
+ BoolInt wasCreated;
+ BoolInt needStart;
+ BoolInt csWasInitialized;
+ BoolInt csWasEntered;
+
+ BoolInt exit;
+ BoolInt stopWriting;
+
+ CAutoResetEvent canStart;
+ CAutoResetEvent wasStopped;
+ CSemaphore freeSemaphore;
+ CSemaphore filledSemaphore;
+ CCriticalSection cs;
+ // UInt32 numBlocks_Sent;
+} CMtSync;
+
+typedef UInt32 * (*Mf_Mix_Matches)(void *p, UInt32 matchMinPos, UInt32 *distances);
+
+/* kMtCacheLineDummy must be >= size_of_CPU_cache_line */
+#define kMtCacheLineDummy 128
+
+typedef void (*Mf_GetHeads)(const Byte *buffer, UInt32 pos,
+ UInt32 *hash, UInt32 hashMask, UInt32 *heads, UInt32 numHeads, const UInt32 *crc);
+
+typedef struct _CMatchFinderMt
+{
+ /* LZ */
+ const Byte *pointerToCurPos;
+ UInt32 *btBuf;
+ const UInt32 *btBufPos;
+ const UInt32 *btBufPosLimit;
+ UInt32 lzPos;
+ UInt32 btNumAvailBytes;
+
+ UInt32 *hash;
+ UInt32 fixedHashSize;
+ // UInt32 hash4Mask;
+ UInt32 historySize;
+ const UInt32 *crc;
+
+ Mf_Mix_Matches MixMatchesFunc;
+ UInt32 failure_LZ_BT; // failure in BT transfered to LZ
+ // UInt32 failure_LZ_LZ; // failure in LZ tables
+ UInt32 failureBuf[1];
+ // UInt32 crc[256];
+
+ /* LZ + BT */
+ CMtSync btSync;
+ Byte btDummy[kMtCacheLineDummy];
+
+ /* BT */
+ UInt32 *hashBuf;
+ UInt32 hashBufPos;
+ UInt32 hashBufPosLimit;
+ UInt32 hashNumAvail;
+ UInt32 failure_BT;
+
+
+ CLzRef *son;
+ UInt32 matchMaxLen;
+ UInt32 numHashBytes;
+ UInt32 pos;
+ const Byte *buffer;
+ UInt32 cyclicBufferPos;
+ UInt32 cyclicBufferSize; /* it must be = (historySize + 1) */
+ UInt32 cutValue;
+
+ /* BT + Hash */
+ CMtSync hashSync;
+ /* Byte hashDummy[kMtCacheLineDummy]; */
+
+ /* Hash */
+ Mf_GetHeads GetHeadsFunc;
+ CMatchFinder *MatchFinder;
+ // CMatchFinder MatchFinder;
+} CMatchFinderMt;
+
+// only for Mt part
+void MatchFinderMt_Construct(CMatchFinderMt *p);
+void MatchFinderMt_Destruct(CMatchFinderMt *p, ISzAllocPtr alloc);
+
+SRes MatchFinderMt_Create(CMatchFinderMt *p, UInt32 historySize, UInt32 keepAddBufferBefore,
+ UInt32 matchMaxLen, UInt32 keepAddBufferAfter, ISzAllocPtr alloc);
+void MatchFinderMt_CreateVTable(CMatchFinderMt *p, IMatchFinder2 *vTable);
+
+/* call MatchFinderMt_InitMt() before IMatchFinder::Init() */
+SRes MatchFinderMt_InitMt(CMatchFinderMt *p);
+void MatchFinderMt_ReleaseStream(CMatchFinderMt *p);
+
+EXTERN_C_END
+
+#endif