diff options
Diffstat (limited to 'other-licenses/7zstub/src/C/MtDec.c')
| -rw-r--r-- | other-licenses/7zstub/src/C/MtDec.c | 1137 |
1 files changed, 1137 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/C/MtDec.c b/other-licenses/7zstub/src/C/MtDec.c new file mode 100644 index 000000000..60d31b07c --- /dev/null +++ b/other-licenses/7zstub/src/C/MtDec.c @@ -0,0 +1,1137 @@ +/* MtDec.c -- Multi-thread Decoder
+2018-03-02 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+// #define SHOW_DEBUG_INFO
+
+// #include <stdio.h>
+
+#ifdef SHOW_DEBUG_INFO
+#include <stdio.h>
+#endif
+
+#ifdef SHOW_DEBUG_INFO
+#define PRF(x) x
+#else
+#define PRF(x)
+#endif
+
+#define PRF_STR_INT(s, d) PRF(printf("\n" s " %d\n", (unsigned)d))
+
+#include "MtDec.h"
+
+#ifndef _7ZIP_ST
+
+void MtProgress_Init(CMtProgress *p, ICompressProgress *progress)
+{
+ p->progress = progress;
+ p->res = SZ_OK;
+ p->totalInSize = 0;
+ p->totalOutSize = 0;
+}
+
+
+SRes MtProgress_Progress_ST(CMtProgress *p)
+{
+ if (p->res == SZ_OK && p->progress)
+ if (ICompressProgress_Progress(p->progress, p->totalInSize, p->totalOutSize) != SZ_OK)
+ p->res = SZ_ERROR_PROGRESS;
+ return p->res;
+}
+
+
+SRes MtProgress_ProgressAdd(CMtProgress *p, UInt64 inSize, UInt64 outSize)
+{
+ SRes res;
+ CriticalSection_Enter(&p->cs);
+
+ p->totalInSize += inSize;
+ p->totalOutSize += outSize;
+ if (p->res == SZ_OK && p->progress)
+ if (ICompressProgress_Progress(p->progress, p->totalInSize, p->totalOutSize) != SZ_OK)
+ p->res = SZ_ERROR_PROGRESS;
+ res = p->res;
+
+ CriticalSection_Leave(&p->cs);
+ return res;
+}
+
+
+SRes MtProgress_GetError(CMtProgress *p)
+{
+ SRes res;
+ CriticalSection_Enter(&p->cs);
+ res = p->res;
+ CriticalSection_Leave(&p->cs);
+ return res;
+}
+
+
+void MtProgress_SetError(CMtProgress *p, SRes res)
+{
+ CriticalSection_Enter(&p->cs);
+ if (p->res == SZ_OK)
+ p->res = res;
+ CriticalSection_Leave(&p->cs);
+}
+
+
+#define RINOK_THREAD(x) RINOK(x)
+
+
+static WRes ArEvent_OptCreate_And_Reset(CEvent *p)
+{
+ if (Event_IsCreated(p))
+ return Event_Reset(p);
+ return AutoResetEvent_CreateNotSignaled(p);
+}
+
+
+
+typedef struct
+{
+ void *next;
+ void *pad[3];
+} CMtDecBufLink;
+
+#define MTDEC__LINK_DATA_OFFSET sizeof(CMtDecBufLink)
+#define MTDEC__DATA_PTR_FROM_LINK(link) ((Byte *)(link) + MTDEC__LINK_DATA_OFFSET)
+
+
+
+static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE ThreadFunc(void *pp);
+
+
+static WRes MtDecThread_CreateEvents(CMtDecThread *t)
+{
+ WRes wres = ArEvent_OptCreate_And_Reset(&t->canWrite);
+ if (wres == 0)
+ {
+ wres = ArEvent_OptCreate_And_Reset(&t->canRead);
+ if (wres == 0)
+ return SZ_OK;
+ }
+ return wres;
+}
+
+
+static SRes MtDecThread_CreateAndStart(CMtDecThread *t)
+{
+ WRes wres = MtDecThread_CreateEvents(t);
+ // wres = 17; // for test
+ if (wres == 0)
+ {
+ if (Thread_WasCreated(&t->thread))
+ return SZ_OK;
+ wres = Thread_Create(&t->thread, ThreadFunc, t);
+ if (wres == 0)
+ return SZ_OK;
+ }
+ return MY_SRes_HRESULT_FROM_WRes(wres);
+}
+
+
+void MtDecThread_FreeInBufs(CMtDecThread *t)
+{
+ if (t->inBuf)
+ {
+ void *link = t->inBuf;
+ t->inBuf = NULL;
+ do
+ {
+ void *next = ((CMtDecBufLink *)link)->next;
+ ISzAlloc_Free(t->mtDec->alloc, link);
+ link = next;
+ }
+ while (link);
+ }
+}
+
+
+static void MtDecThread_CloseThread(CMtDecThread *t)
+{
+ if (Thread_WasCreated(&t->thread))
+ {
+ Event_Set(&t->canWrite); /* we can disable it. There are no threads waiting canWrite in normal cases */
+ Event_Set(&t->canRead);
+ Thread_Wait(&t->thread);
+ Thread_Close(&t->thread);
+ }
+
+ Event_Close(&t->canRead);
+ Event_Close(&t->canWrite);
+}
+
+static void MtDec_CloseThreads(CMtDec *p)
+{
+ unsigned i;
+ for (i = 0; i < MTDEC__THREADS_MAX; i++)
+ MtDecThread_CloseThread(&p->threads[i]);
+}
+
+static void MtDecThread_Destruct(CMtDecThread *t)
+{
+ MtDecThread_CloseThread(t);
+ MtDecThread_FreeInBufs(t);
+}
+
+
+
+static SRes FullRead(ISeqInStream *stream, Byte *data, size_t *processedSize)
+{
+ size_t size = *processedSize;
+ *processedSize = 0;
+ while (size != 0)
+ {
+ size_t cur = size;
+ SRes res = ISeqInStream_Read(stream, data, &cur);
+ *processedSize += cur;
+ data += cur;
+ size -= cur;
+ RINOK(res);
+ if (cur == 0)
+ return SZ_OK;
+ }
+ return SZ_OK;
+}
+
+
+static SRes MtDec_GetError_Spec(CMtDec *p, UInt64 interruptIndex, Bool *wasInterrupted)
+{
+ SRes res;
+ CriticalSection_Enter(&p->mtProgress.cs);
+ *wasInterrupted = (p->needInterrupt && interruptIndex > p->interruptIndex);
+ res = p->mtProgress.res;
+ CriticalSection_Leave(&p->mtProgress.cs);
+ return res;
+}
+
+static SRes MtDec_Progress_GetError_Spec(CMtDec *p, UInt64 inSize, UInt64 outSize, UInt64 interruptIndex, Bool *wasInterrupted)
+{
+ SRes res;
+ CriticalSection_Enter(&p->mtProgress.cs);
+
+ p->mtProgress.totalInSize += inSize;
+ p->mtProgress.totalOutSize += outSize;
+ if (p->mtProgress.res == SZ_OK && p->mtProgress.progress)
+ if (ICompressProgress_Progress(p->mtProgress.progress, p->mtProgress.totalInSize, p->mtProgress.totalOutSize) != SZ_OK)
+ p->mtProgress.res = SZ_ERROR_PROGRESS;
+
+ *wasInterrupted = (p->needInterrupt && interruptIndex > p->interruptIndex);
+ res = p->mtProgress.res;
+
+ CriticalSection_Leave(&p->mtProgress.cs);
+
+ return res;
+}
+
+static void MtDec_Interrupt(CMtDec *p, UInt64 interruptIndex)
+{
+ CriticalSection_Enter(&p->mtProgress.cs);
+ if (!p->needInterrupt || interruptIndex < p->interruptIndex)
+ {
+ p->interruptIndex = interruptIndex;
+ p->needInterrupt = True;
+ }
+ CriticalSection_Leave(&p->mtProgress.cs);
+}
+
+Byte *MtDec_GetCrossBuff(CMtDec *p)
+{
+ Byte *cr = p->crossBlock;
+ if (!cr)
+ {
+ cr = (Byte *)ISzAlloc_Alloc(p->alloc, MTDEC__LINK_DATA_OFFSET + p->inBufSize);
+ if (!cr)
+ return NULL;
+ p->crossBlock = cr;
+ }
+ return MTDEC__DATA_PTR_FROM_LINK(cr);
+}
+
+
+/*
+ ThreadFunc2() returns:
+ 0 - in all normal cases (even for stream error or memory allocation error)
+ (!= 0) - WRes error return by system threading function
+*/
+
+// #define MTDEC_ProgessStep (1 << 22)
+#define MTDEC_ProgessStep (1 << 0)
+
+static WRes ThreadFunc2(CMtDecThread *t)
+{
+ CMtDec *p = t->mtDec;
+
+ PRF_STR_INT("ThreadFunc2", t->index);
+
+ // SetThreadAffinityMask(GetCurrentThread(), 1 << t->index);
+
+ for (;;)
+ {
+ SRes res, codeRes;
+ Bool wasInterrupted, isAllocError, overflow, finish;
+ SRes threadingErrorSRes;
+ Bool needCode, needWrite, needContinue;
+
+ size_t inDataSize_Start;
+ UInt64 inDataSize;
+ // UInt64 inDataSize_Full;
+
+ UInt64 blockIndex;
+
+ UInt64 inPrev = 0;
+ UInt64 outPrev = 0;
+ UInt64 inCodePos;
+ UInt64 outCodePos;
+
+ Byte *afterEndData = NULL;
+ size_t afterEndData_Size = 0;
+
+ Bool canCreateNewThread = False;
+ // CMtDecCallbackInfo parse;
+ CMtDecThread *nextThread;
+
+ PRF_STR_INT("Event_Wait(&t->canRead)", t->index);
+
+ RINOK_THREAD(Event_Wait(&t->canRead));
+ if (p->exitThread)
+ return 0;
+
+ PRF_STR_INT("after Event_Wait(&t->canRead)", t->index);
+
+ // if (t->index == 3) return 19; // for test
+
+ blockIndex = p->blockIndex++;
+
+ // PRF(printf("\ncanRead\n"))
+
+ res = MtDec_Progress_GetError_Spec(p, 0, 0, blockIndex, &wasInterrupted);
+
+ finish = p->readWasFinished;
+ needCode = False;
+ needWrite = False;
+ isAllocError = False;
+ overflow = False;
+
+ inDataSize_Start = 0;
+ inDataSize = 0;
+ // inDataSize_Full = 0;
+
+ if (res == SZ_OK && !wasInterrupted)
+ {
+ // if (p->inStream)
+ {
+ CMtDecBufLink *prev = NULL;
+ CMtDecBufLink *link = (CMtDecBufLink *)t->inBuf;
+ size_t crossSize = p->crossEnd - p->crossStart;
+
+ PRF(printf("\ncrossSize = %d\n", crossSize));
+
+ for (;;)
+ {
+ if (!link)
+ {
+ link = (CMtDecBufLink *)ISzAlloc_Alloc(p->alloc, MTDEC__LINK_DATA_OFFSET + p->inBufSize);
+ if (!link)
+ {
+ finish = True;
+ // p->allocError_for_Read_BlockIndex = blockIndex;
+ isAllocError = True;
+ break;
+ }
+ link->next = NULL;
+ if (prev)
+ {
+ // static unsigned g_num = 0;
+ // printf("\n%6d : %x", ++g_num, (unsigned)(size_t)((Byte *)link - (Byte *)prev));
+ prev->next = link;
+ }
+ else
+ t->inBuf = (void *)link;
+ }
+
+ {
+ Byte *data = MTDEC__DATA_PTR_FROM_LINK(link);
+ Byte *parseData = data;
+ size_t size;
+
+ if (crossSize != 0)
+ {
+ inDataSize = crossSize;
+ // inDataSize_Full = inDataSize;
+ inDataSize_Start = crossSize;
+ size = crossSize;
+ parseData = MTDEC__DATA_PTR_FROM_LINK(p->crossBlock) + p->crossStart;
+ PRF(printf("\ncross : crossStart = %7d crossEnd = %7d finish = %1d",
+ (int)p->crossStart, (int)p->crossEnd, (int)finish));
+ }
+ else
+ {
+ size = p->inBufSize;
+
+ res = FullRead(p->inStream, data, &size);
+
+ // size = 10; // test
+
+ inDataSize += size;
+ // inDataSize_Full = inDataSize;
+ if (!prev)
+ inDataSize_Start = size;
+
+ p->readProcessed += size;
+ finish = (size != p->inBufSize);
+ if (finish)
+ p->readWasFinished = True;
+
+ // res = E_INVALIDARG; // test
+
+ if (res != SZ_OK)
+ {
+ // PRF(printf("\nRead error = %d\n", res))
+ // we want to decode all data before error
+ p->readRes = res;
+ // p->readError_BlockIndex = blockIndex;
+ p->readWasFinished = True;
+ finish = True;
+ res = SZ_OK;
+ // break;
+ }
+
+ if (inDataSize - inPrev >= MTDEC_ProgessStep)
+ {
+ res = MtDec_Progress_GetError_Spec(p, 0, 0, blockIndex, &wasInterrupted);
+ if (res != SZ_OK || wasInterrupted)
+ break;
+ inPrev = inDataSize;
+ }
+ }
+
+ {
+ CMtDecCallbackInfo parse;
+
+ parse.startCall = (prev == NULL);
+ parse.src = parseData;
+ parse.srcSize = size;
+ parse.srcFinished = finish;
+ parse.canCreateNewThread = True;
+
+ // PRF(printf("\nParse size = %d\n", (unsigned)size))
+
+ p->mtCallback->Parse(p->mtCallbackObject, t->index, &parse);
+
+ needWrite = True;
+ canCreateNewThread = parse.canCreateNewThread;
+
+ // printf("\n\n%12I64u %12I64u", (UInt64)p->mtProgress.totalInSize, (UInt64)p->mtProgress.totalOutSize);
+
+ if (
+ // parseRes != SZ_OK ||
+ // inDataSize - (size - parse.srcSize) > p->inBlockMax
+ // ||
+ parse.state == MTDEC_PARSE_OVERFLOW
+ // || wasInterrupted
+ )
+ {
+ // Overflow or Parse error - switch from MT decoding to ST decoding
+ finish = True;
+ overflow = True;
+
+ {
+ PRF(printf("\n Overflow"));
+ // PRF(printf("\nisBlockFinished = %d", (unsigned)parse.blockWasFinished));
+ PRF(printf("\n inDataSize = %d", (unsigned)inDataSize));
+ }
+
+ if (crossSize != 0)
+ memcpy(data, parseData, size);
+ p->crossStart = 0;
+ p->crossEnd = 0;
+ break;
+ }
+
+ if (crossSize != 0)
+ {
+ memcpy(data, parseData, parse.srcSize);
+ p->crossStart += parse.srcSize;
+ }
+
+ if (parse.state != MTDEC_PARSE_CONTINUE || finish)
+ {
+ // we don't need to parse in current thread anymore
+
+ if (parse.state == MTDEC_PARSE_END)
+ finish = True;
+
+ needCode = True;
+ // p->crossFinished = finish;
+
+ if (parse.srcSize == size)
+ {
+ // full parsed - no cross transfer
+ p->crossStart = 0;
+ p->crossEnd = 0;
+ break;
+ }
+
+ if (parse.state == MTDEC_PARSE_END)
+ {
+ p->crossStart = 0;
+ p->crossEnd = 0;
+
+ if (crossSize != 0)
+ memcpy(data + parse.srcSize, parseData + parse.srcSize, size - parse.srcSize); // we need all data
+ afterEndData_Size = size - parse.srcSize;
+ afterEndData = parseData + parse.srcSize;
+
+ // we reduce data size to required bytes (parsed only)
+ inDataSize -= (size - parse.srcSize);
+ if (!prev)
+ inDataSize_Start = parse.srcSize;
+ break;
+ }
+
+ {
+ // partial parsed - need cross transfer
+ if (crossSize != 0)
+ inDataSize = parse.srcSize; // it's only parsed now
+ else
+ {
+ // partial parsed - is not in initial cross block - we need to copy new data to cross block
+ Byte *cr = MtDec_GetCrossBuff(p);
+ if (!cr)
+ {
+ {
+ PRF(printf("\ncross alloc error error\n"));
+ // res = SZ_ERROR_MEM;
+ finish = True;
+ // p->allocError_for_Read_BlockIndex = blockIndex;
+ isAllocError = True;
+ break;
+ }
+ }
+
+ {
+ size_t crSize = size - parse.srcSize;
+ inDataSize -= crSize;
+ p->crossEnd = crSize;
+ p->crossStart = 0;
+ memcpy(cr, parseData + parse.srcSize, crSize);
+ }
+ }
+
+ // inDataSize_Full = inDataSize;
+ if (!prev)
+ inDataSize_Start = parse.srcSize; // it's partial size (parsed only)
+
+ finish = False;
+ break;
+ }
+ }
+
+ if (parse.srcSize != size)
+ {
+ res = SZ_ERROR_FAIL;
+ PRF(printf("\nfinished error SZ_ERROR_FAIL = %d\n", res));
+ break;
+ }
+ }
+ }
+
+ prev = link;
+ link = link->next;
+
+ if (crossSize != 0)
+ {
+ crossSize = 0;
+ p->crossStart = 0;
+ p->crossEnd = 0;
+ }
+ }
+ }
+
+ if (res == SZ_OK)
+ res = MtDec_GetError_Spec(p, blockIndex, &wasInterrupted);
+ }
+
+ codeRes = SZ_OK;
+
+ if (res == SZ_OK && needCode && !wasInterrupted)
+ {
+ codeRes = p->mtCallback->PreCode(p->mtCallbackObject, t->index);
+ if (codeRes != SZ_OK)
+ {
+ needCode = False;
+ finish = True;
+ // SZ_ERROR_MEM is expected error here.
+ // if (codeRes == SZ_ERROR_MEM) - we will try single-thread decoding later.
+ // if (codeRes != SZ_ERROR_MEM) - we can stop decoding or try single-thread decoding.
+ }
+ }
+
+ if (res != SZ_OK || wasInterrupted)
+ finish = True;
+
+ nextThread = NULL;
+ threadingErrorSRes = SZ_OK;
+
+ if (!finish)
+ {
+ if (p->numStartedThreads < p->numStartedThreads_Limit && canCreateNewThread)
+ {
+ SRes res2 = MtDecThread_CreateAndStart(&p->threads[p->numStartedThreads]);
+ if (res2 == SZ_OK)
+ {
+ // if (p->numStartedThreads % 1000 == 0) PRF(printf("\n numStartedThreads=%d\n", p->numStartedThreads));
+ p->numStartedThreads++;
+ }
+ else
+ {
+ PRF(printf("\nERROR: numStartedThreads=%d\n", p->numStartedThreads));
+ if (p->numStartedThreads == 1)
+ {
+ // if only one thread is possible, we leave muti-threading code
+ finish = True;
+ needCode = False;
+ threadingErrorSRes = res2;
+ }
+ else
+ p->numStartedThreads_Limit = p->numStartedThreads;
+ }
+ }
+
+ if (!finish)
+ {
+ unsigned nextIndex = t->index + 1;
+ nextThread = &p->threads[nextIndex >= p->numStartedThreads ? 0 : nextIndex];
+ RINOK_THREAD(Event_Set(&nextThread->canRead))
+ // We have started executing for new iteration (with next thread)
+ // And that next thread now is responsible for possible exit from decoding (threading_code)
+ }
+ }
+
+ // each call of Event_Set(&nextThread->canRead) must be followed by call of Event_Set(&nextThread->canWrite)
+ // if ( !finish ) we must call Event_Set(&nextThread->canWrite) in any case
+ // if ( finish ) we switch to single-thread mode and there are 2 ways at the end of current iteration (current block):
+ // - if (needContinue) after Write(&needContinue), we restore decoding with new iteration
+ // - otherwise we stop decoding and exit from ThreadFunc2()
+
+ // Don't change (finish) variable in the further code
+
+
+ // ---------- CODE ----------
+
+ inPrev = 0;
+ outPrev = 0;
+ inCodePos = 0;
+ outCodePos = 0;
+
+ if (res == SZ_OK && needCode && codeRes == SZ_OK)
+ {
+ Bool isStartBlock = True;
+ CMtDecBufLink *link = (CMtDecBufLink *)t->inBuf;
+
+ for (;;)
+ {
+ size_t inSize;
+ int stop;
+
+ if (isStartBlock)
+ inSize = inDataSize_Start;
+ else
+ {
+ UInt64 rem = inDataSize - inCodePos;
+ inSize = p->inBufSize;
+ if (inSize > rem)
+ inSize = (size_t)rem;
+ }
+
+ inCodePos += inSize;
+ stop = True;
+
+ codeRes = p->mtCallback->Code(p->mtCallbackObject, t->index,
+ (const Byte *)MTDEC__DATA_PTR_FROM_LINK(link), inSize,
+ (inCodePos == inDataSize), // srcFinished
+ &inCodePos, &outCodePos, &stop);
+
+ if (codeRes != SZ_OK)
+ {
+ PRF(printf("\nCode Interrupt error = %x\n", codeRes));
+ // we interrupt only later blocks
+ MtDec_Interrupt(p, blockIndex);
+ break;
+ }
+
+ if (stop || inCodePos == inDataSize)
+ break;
+
+ {
+ const UInt64 inDelta = inCodePos - inPrev;
+ const UInt64 outDelta = outCodePos - outPrev;
+ if (inDelta >= MTDEC_ProgessStep || outDelta >= MTDEC_ProgessStep)
+ {
+ // Sleep(1);
+ res = MtDec_Progress_GetError_Spec(p, inDelta, outDelta, blockIndex, &wasInterrupted);
+ if (res != SZ_OK || wasInterrupted)
+ break;
+ inPrev = inCodePos;
+ outPrev = outCodePos;
+ }
+ }
+
+ link = link->next;
+ isStartBlock = False;
+ }
+ }
+
+
+ // ---------- WRITE ----------
+
+ RINOK_THREAD(Event_Wait(&t->canWrite));
+
+ {
+ Bool isErrorMode = False;
+ Bool canRecode = True;
+ Bool needWriteToStream = needWrite;
+
+ if (p->exitThread) return 0; // it's never executed in normal cases
+
+ if (p->wasInterrupted)
+ wasInterrupted = True;
+ else
+ {
+ if (codeRes != SZ_OK) // || !needCode // check it !!!
+ {
+ p->wasInterrupted = True;
+ p->codeRes = codeRes;
+ if (codeRes == SZ_ERROR_MEM)
+ isAllocError = True;
+ }
+
+ if (threadingErrorSRes)
+ {
+ p->wasInterrupted = True;
+ p->threadingErrorSRes = threadingErrorSRes;
+ needWriteToStream = False;
+ }
+ if (isAllocError)
+ {
+ p->wasInterrupted = True;
+ p->isAllocError = True;
+ needWriteToStream = False;
+ }
+ if (overflow)
+ {
+ p->wasInterrupted = True;
+ p->overflow = True;
+ needWriteToStream = False;
+ }
+ }
+
+ if (needCode)
+ {
+ if (wasInterrupted)
+ {
+ inCodePos = 0;
+ outCodePos = 0;
+ }
+ {
+ const UInt64 inDelta = inCodePos - inPrev;
+ const UInt64 outDelta = outCodePos - outPrev;
+ // if (inDelta != 0 || outDelta != 0)
+ res = MtProgress_ProgressAdd(&p->mtProgress, inDelta, outDelta);
+ }
+ }
+
+ needContinue = (!finish);
+
+ // if (res == SZ_OK && needWrite && !wasInterrupted)
+ if (needWrite)
+ {
+ // p->inProcessed += inCodePos;
+
+ res = p->mtCallback->Write(p->mtCallbackObject, t->index,
+ res == SZ_OK && needWriteToStream && !wasInterrupted, // needWrite
+ afterEndData, afterEndData_Size,
+ &needContinue,
+ &canRecode);
+
+ // res= E_INVALIDARG; // for test
+
+ PRF(printf("\nAfter Write needContinue = %d\n", (unsigned)needContinue));
+ PRF(printf("\nprocessed = %d\n", (unsigned)p->inProcessed));
+
+ if (res != SZ_OK)
+ {
+ PRF(printf("\nWrite error = %d\n", res));
+ isErrorMode = True;
+ p->wasInterrupted = True;
+ }
+ if (res != SZ_OK
+ || (!needContinue && !finish))
+ {
+ PRF(printf("\nWrite Interrupt error = %x\n", res));
+ MtDec_Interrupt(p, blockIndex);
+ }
+ }
+
+ if (canRecode)
+ if (!needCode
+ || res != SZ_OK
+ || p->wasInterrupted
+ || codeRes != SZ_OK
+ || wasInterrupted
+ || p->numFilledThreads != 0
+ || isErrorMode)
+ {
+ if (p->numFilledThreads == 0)
+ p->filledThreadStart = t->index;
+ if (inDataSize != 0 || !finish)
+ {
+ t->inDataSize_Start = inDataSize_Start;
+ t->inDataSize = inDataSize;
+ p->numFilledThreads++;
+ }
+ PRF(printf("\np->numFilledThreads = %d\n", p->numFilledThreads));
+ PRF(printf("p->filledThreadStart = %d\n", p->filledThreadStart));
+ }
+
+ if (!finish)
+ {
+ RINOK_THREAD(Event_Set(&nextThread->canWrite));
+ }
+ else
+ {
+ if (needContinue)
+ {
+ // we restore decoding with new iteration
+ RINOK_THREAD(Event_Set(&p->threads[0].canWrite));
+ }
+ else
+ {
+ // we exit from decoding
+ if (t->index == 0)
+ return SZ_OK;
+ p->exitThread = True;
+ }
+ RINOK_THREAD(Event_Set(&p->threads[0].canRead));
+ }
+ }
+ }
+}
+
+#ifdef _WIN32
+#define USE_ALLOCA
+#endif
+
+#ifdef USE_ALLOCA
+#ifdef _WIN32
+#include <malloc.h>
+#else
+#include <stdlib.h>
+#endif
+#endif
+
+
+static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE ThreadFunc1(void *pp)
+{
+ WRes res;
+
+ CMtDecThread *t = (CMtDecThread *)pp;
+ CMtDec *p;
+
+ // fprintf(stdout, "\n%d = %p\n", t->index, &t);
+
+ res = ThreadFunc2(t);
+ p = t->mtDec;
+ if (res == 0)
+ return p->exitThreadWRes;
+ {
+ // it's unexpected situation for some threading function error
+ if (p->exitThreadWRes == 0)
+ p->exitThreadWRes = res;
+ PRF(printf("\nthread exit error = %d\n", res));
+ p->exitThread = True;
+ Event_Set(&p->threads[0].canRead);
+ Event_Set(&p->threads[0].canWrite);
+ MtProgress_SetError(&p->mtProgress, MY_SRes_HRESULT_FROM_WRes(res));
+ }
+ return res;
+}
+
+static MY_NO_INLINE THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE ThreadFunc(void *pp)
+{
+ CMtDecThread *t = (CMtDecThread *)pp;
+
+ // fprintf(stderr, "\n%d = %p - before", t->index, &t);
+ #ifdef USE_ALLOCA
+ t->allocaPtr = alloca(t->index * 128);
+ #endif
+ return ThreadFunc1(pp);
+}
+
+
+int MtDec_PrepareRead(CMtDec *p)
+{
+ if (p->crossBlock && p->crossStart == p->crossEnd)
+ {
+ ISzAlloc_Free(p->alloc, p->crossBlock);
+ p->crossBlock = NULL;
+ }
+
+ {
+ unsigned i;
+ for (i = 0; i < MTDEC__THREADS_MAX; i++)
+ if (i > p->numStartedThreads
+ || p->numFilledThreads <=
+ (i >= p->filledThreadStart ?
+ i - p->filledThreadStart :
+ i + p->numStartedThreads - p->filledThreadStart))
+ MtDecThread_FreeInBufs(&p->threads[i]);
+ }
+
+ return (p->numFilledThreads != 0) || (p->crossStart != p->crossEnd);
+}
+
+
+const Byte *MtDec_Read(CMtDec *p, size_t *inLim)
+{
+ while (p->numFilledThreads != 0)
+ {
+ CMtDecThread *t = &p->threads[p->filledThreadStart];
+
+ if (*inLim != 0)
+ {
+ {
+ void *link = t->inBuf;
+ void *next = ((CMtDecBufLink *)link)->next;
+ ISzAlloc_Free(p->alloc, link);
+ t->inBuf = next;
+ }
+
+ if (t->inDataSize == 0)
+ {
+ MtDecThread_FreeInBufs(t);
+ if (--p->numFilledThreads == 0)
+ break;
+ if (++p->filledThreadStart == p->numStartedThreads)
+ p->filledThreadStart = 0;
+ t = &p->threads[p->filledThreadStart];
+ }
+ }
+
+ {
+ size_t lim = t->inDataSize_Start;
+ if (lim != 0)
+ t->inDataSize_Start = 0;
+ else
+ {
+ UInt64 rem = t->inDataSize;
+ lim = p->inBufSize;
+ if (lim > rem)
+ lim = (size_t)rem;
+ }
+ t->inDataSize -= lim;
+ *inLim = lim;
+ return (const Byte *)MTDEC__DATA_PTR_FROM_LINK(t->inBuf);
+ }
+ }
+
+ {
+ size_t crossSize = p->crossEnd - p->crossStart;
+ if (crossSize != 0)
+ {
+ const Byte *data = MTDEC__DATA_PTR_FROM_LINK(p->crossBlock) + p->crossStart;
+ *inLim = crossSize;
+ p->crossStart = 0;
+ p->crossEnd = 0;
+ return data;
+ }
+ *inLim = 0;
+ if (p->crossBlock)
+ {
+ ISzAlloc_Free(p->alloc, p->crossBlock);
+ p->crossBlock = NULL;
+ }
+ return NULL;
+ }
+}
+
+
+void MtDec_Construct(CMtDec *p)
+{
+ unsigned i;
+
+ p->inBufSize = (size_t)1 << 18;
+
+ p->numThreadsMax = 0;
+
+ p->inStream = NULL;
+
+ // p->inData = NULL;
+ // p->inDataSize = 0;
+
+ p->crossBlock = NULL;
+ p->crossStart = 0;
+ p->crossEnd = 0;
+
+ p->numFilledThreads = 0;
+
+ p->progress = NULL;
+ p->alloc = NULL;
+
+ p->mtCallback = NULL;
+ p->mtCallbackObject = NULL;
+
+ p->allocatedBufsSize = 0;
+
+ for (i = 0; i < MTDEC__THREADS_MAX; i++)
+ {
+ CMtDecThread *t = &p->threads[i];
+ t->mtDec = p;
+ t->index = i;
+ t->inBuf = NULL;
+ Event_Construct(&t->canRead);
+ Event_Construct(&t->canWrite);
+ Thread_Construct(&t->thread);
+ }
+
+ // Event_Construct(&p->finishedEvent);
+
+ CriticalSection_Init(&p->mtProgress.cs);
+}
+
+
+static void MtDec_Free(CMtDec *p)
+{
+ unsigned i;
+
+ p->exitThread = True;
+
+ for (i = 0; i < MTDEC__THREADS_MAX; i++)
+ MtDecThread_Destruct(&p->threads[i]);
+
+ // Event_Close(&p->finishedEvent);
+
+ if (p->crossBlock)
+ {
+ ISzAlloc_Free(p->alloc, p->crossBlock);
+ p->crossBlock = NULL;
+ }
+}
+
+
+void MtDec_Destruct(CMtDec *p)
+{
+ MtDec_Free(p);
+
+ CriticalSection_Delete(&p->mtProgress.cs);
+}
+
+
+SRes MtDec_Code(CMtDec *p)
+{
+ unsigned i;
+
+ p->inProcessed = 0;
+
+ p->blockIndex = 1; // it must be larger than not_defined index (0)
+ p->isAllocError = False;
+ p->overflow = False;
+ p->threadingErrorSRes = SZ_OK;
+
+ p->needContinue = True;
+
+ p->readWasFinished = False;
+ p->needInterrupt = False;
+ p->interruptIndex = (UInt64)(Int64)-1;
+
+ p->readProcessed = 0;
+ p->readRes = SZ_OK;
+ p->codeRes = SZ_OK;
+ p->wasInterrupted = False;
+
+ p->crossStart = 0;
+ p->crossEnd = 0;
+
+ p->filledThreadStart = 0;
+ p->numFilledThreads = 0;
+
+ {
+ unsigned numThreads = p->numThreadsMax;
+ if (numThreads > MTDEC__THREADS_MAX)
+ numThreads = MTDEC__THREADS_MAX;
+ p->numStartedThreads_Limit = numThreads;
+ p->numStartedThreads = 0;
+ }
+
+ if (p->inBufSize != p->allocatedBufsSize)
+ {
+ for (i = 0; i < MTDEC__THREADS_MAX; i++)
+ {
+ CMtDecThread *t = &p->threads[i];
+ if (t->inBuf)
+ MtDecThread_FreeInBufs(t);
+ }
+ if (p->crossBlock)
+ {
+ ISzAlloc_Free(p->alloc, p->crossBlock);
+ p->crossBlock = NULL;
+ }
+
+ p->allocatedBufsSize = p->inBufSize;
+ }
+
+ MtProgress_Init(&p->mtProgress, p->progress);
+
+ // RINOK_THREAD(ArEvent_OptCreate_And_Reset(&p->finishedEvent));
+ p->exitThread = False;
+ p->exitThreadWRes = 0;
+
+ {
+ WRes wres;
+ WRes sres;
+ CMtDecThread *nextThread = &p->threads[p->numStartedThreads++];
+ // wres = MtDecThread_CreateAndStart(nextThread);
+ wres = MtDecThread_CreateEvents(nextThread);
+ if (wres == 0) { wres = Event_Set(&nextThread->canWrite);
+ if (wres == 0) { wres = Event_Set(&nextThread->canRead);
+ if (wres == 0) { wres = ThreadFunc(nextThread);
+ if (wres != 0)
+ {
+ p->needContinue = False;
+ MtDec_CloseThreads(p);
+ }}}}
+
+ // wres = 17; // for test
+ // wres = Event_Wait(&p->finishedEvent);
+
+ sres = MY_SRes_HRESULT_FROM_WRes(wres);
+
+ if (sres != 0)
+ p->threadingErrorSRes = sres;
+
+ if (
+ // wres == 0
+ // wres != 0
+ // || p->mtc.codeRes == SZ_ERROR_MEM
+ p->isAllocError
+ || p->threadingErrorSRes != SZ_OK
+ || p->overflow)
+ {
+ // p->needContinue = True;
+ }
+ else
+ p->needContinue = False;
+
+ if (p->needContinue)
+ return SZ_OK;
+
+ // if (sres != SZ_OK)
+ return sres;
+ // return E_FAIL;
+ }
+}
+
+#endif
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