diff options
Diffstat (limited to 'src/lib/lib7z/MtCoder.c')
-rw-r--r-- | src/lib/lib7z/MtCoder.c | 327 |
1 files changed, 0 insertions, 327 deletions
diff --git a/src/lib/lib7z/MtCoder.c b/src/lib/lib7z/MtCoder.c deleted file mode 100644 index 03feff4a1b7..00000000000 --- a/src/lib/lib7z/MtCoder.c +++ /dev/null @@ -1,327 +0,0 @@ -/* MtCoder.c -- Multi-thread Coder -2010-09-24 : Igor Pavlov : Public domain */ - -#include <stdio.h> - -#include "MtCoder.h" - -void LoopThread_Construct(CLoopThread *p) -{ - Thread_Construct(&p->thread); - Event_Construct(&p->startEvent); - Event_Construct(&p->finishedEvent); -} - -void LoopThread_Close(CLoopThread *p) -{ - Thread_Close(&p->thread); - Event_Close(&p->startEvent); - Event_Close(&p->finishedEvent); -} - -static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE LoopThreadFunc(void *pp) -{ - CLoopThread *p = (CLoopThread *)pp; - for (;;) - { - if (Event_Wait(&p->startEvent) != 0) - return SZ_ERROR_THREAD; - if (p->stop) - return 0; - p->res = p->func(p->param); - if (Event_Set(&p->finishedEvent) != 0) - return SZ_ERROR_THREAD; - } -} - -WRes LoopThread_Create(CLoopThread *p) -{ - p->stop = 0; - RINOK(AutoResetEvent_CreateNotSignaled(&p->startEvent)); - RINOK(AutoResetEvent_CreateNotSignaled(&p->finishedEvent)); - return Thread_Create(&p->thread, LoopThreadFunc, p); -} - -WRes LoopThread_StopAndWait(CLoopThread *p) -{ - p->stop = 1; - if (Event_Set(&p->startEvent) != 0) - return SZ_ERROR_THREAD; - return Thread_Wait(&p->thread); -} - -WRes LoopThread_StartSubThread(CLoopThread *p) { return Event_Set(&p->startEvent); } -WRes LoopThread_WaitSubThread(CLoopThread *p) { return Event_Wait(&p->finishedEvent); } - -static SRes Progress(ICompressProgress *p, UInt64 inSize, UInt64 outSize) -{ - return (p && p->Progress(p, inSize, outSize) != SZ_OK) ? SZ_ERROR_PROGRESS : SZ_OK; -} - -static void MtProgress_Init(CMtProgress *p, ICompressProgress *progress) -{ - unsigned i; - for (i = 0; i < NUM_MT_CODER_THREADS_MAX; i++) - p->inSizes[i] = p->outSizes[i] = 0; - p->totalInSize = p->totalOutSize = 0; - p->progress = progress; - p->res = SZ_OK; -} - -static void MtProgress_Reinit(CMtProgress *p, unsigned index) -{ - p->inSizes[index] = 0; - p->outSizes[index] = 0; -} - -#define UPDATE_PROGRESS(size, prev, total) \ - if (size != (UInt64)(Int64)-1) { total += size - prev; prev = size; } - -SRes MtProgress_Set(CMtProgress *p, unsigned index, UInt64 inSize, UInt64 outSize) -{ - SRes res; - CriticalSection_Enter(&p->cs); - UPDATE_PROGRESS(inSize, p->inSizes[index], p->totalInSize) - UPDATE_PROGRESS(outSize, p->outSizes[index], p->totalOutSize) - if (p->res == SZ_OK) - p->res = Progress(p->progress, p->totalInSize, p->totalOutSize); - res = p->res; - CriticalSection_Leave(&p->cs); - return res; -} - -static void MtProgress_SetError(CMtProgress *p, SRes res) -{ - CriticalSection_Enter(&p->cs); - if (p->res == SZ_OK) - p->res = res; - CriticalSection_Leave(&p->cs); -} - -static void MtCoder_SetError(CMtCoder* p, SRes res) -{ - CriticalSection_Enter(&p->cs); - if (p->res == SZ_OK) - p->res = res; - CriticalSection_Leave(&p->cs); -} - -/* ---------- MtThread ---------- */ - -void CMtThread_Construct(CMtThread *p, CMtCoder *mtCoder) -{ - p->mtCoder = mtCoder; - p->outBuf = 0; - p->inBuf = 0; - Event_Construct(&p->canRead); - Event_Construct(&p->canWrite); - LoopThread_Construct(&p->thread); -} - -#define RINOK_THREAD(x) { if((x) != 0) return SZ_ERROR_THREAD; } - -static void CMtThread_CloseEvents(CMtThread *p) -{ - Event_Close(&p->canRead); - Event_Close(&p->canWrite); -} - -static void CMtThread_Destruct(CMtThread *p) -{ - CMtThread_CloseEvents(p); - - if (Thread_WasCreated(&p->thread.thread)) - { - LoopThread_StopAndWait(&p->thread); - LoopThread_Close(&p->thread); - } - - if (p->mtCoder->alloc) - IAlloc_Free(p->mtCoder->alloc, p->outBuf); - p->outBuf = 0; - - if (p->mtCoder->alloc) - IAlloc_Free(p->mtCoder->alloc, p->inBuf); - p->inBuf = 0; -} - -#define MY_BUF_ALLOC(buf, size, newSize) \ - if (buf == 0 || size != newSize) \ - { IAlloc_Free(p->mtCoder->alloc, buf); \ - size = newSize; buf = (Byte *)IAlloc_Alloc(p->mtCoder->alloc, size); \ - if (buf == 0) return SZ_ERROR_MEM; } - -static SRes CMtThread_Prepare(CMtThread *p) -{ - MY_BUF_ALLOC(p->inBuf, p->inBufSize, p->mtCoder->blockSize) - MY_BUF_ALLOC(p->outBuf, p->outBufSize, p->mtCoder->destBlockSize) - - p->stopReading = False; - p->stopWriting = False; - RINOK_THREAD(AutoResetEvent_CreateNotSignaled(&p->canRead)); - RINOK_THREAD(AutoResetEvent_CreateNotSignaled(&p->canWrite)); - - return SZ_OK; -} - -static SRes FullRead(ISeqInStream *stream, Byte *data, size_t *processedSize) -{ - size_t size = *processedSize; - *processedSize = 0; - while (size != 0) - { - size_t curSize = size; - SRes res = stream->Read(stream, data, &curSize); - *processedSize += curSize; - data += curSize; - size -= curSize; - RINOK(res); - if (curSize == 0) - return SZ_OK; - } - return SZ_OK; -} - -#define GET_NEXT_THREAD(p) &p->mtCoder->threads[p->index == p->mtCoder->numThreads - 1 ? 0 : p->index + 1] - -static SRes MtThread_Process(CMtThread *p, Bool *stop) -{ - CMtThread *next; - *stop = True; - if (Event_Wait(&p->canRead) != 0) - return SZ_ERROR_THREAD; - - next = GET_NEXT_THREAD(p); - - if (p->stopReading) - { - next->stopReading = True; - return Event_Set(&next->canRead) == 0 ? SZ_OK : SZ_ERROR_THREAD; - } - - { - size_t size = p->mtCoder->blockSize; - size_t destSize = p->outBufSize; - - RINOK(FullRead(p->mtCoder->inStream, p->inBuf, &size)); - next->stopReading = *stop = (size != p->mtCoder->blockSize); - if (Event_Set(&next->canRead) != 0) - return SZ_ERROR_THREAD; - - RINOK(p->mtCoder->mtCallback->Code(p->mtCoder->mtCallback, p->index, - p->outBuf, &destSize, p->inBuf, size, *stop)); - - MtProgress_Reinit(&p->mtCoder->mtProgress, p->index); - - if (Event_Wait(&p->canWrite) != 0) - return SZ_ERROR_THREAD; - if (p->stopWriting) - return SZ_ERROR_FAIL; - if (p->mtCoder->outStream->Write(p->mtCoder->outStream, p->outBuf, destSize) != destSize) - return SZ_ERROR_WRITE; - return Event_Set(&next->canWrite) == 0 ? SZ_OK : SZ_ERROR_THREAD; - } -} - -static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE ThreadFunc(void *pp) -{ - CMtThread *p = (CMtThread *)pp; - for (;;) - { - Bool stop; - CMtThread *next = GET_NEXT_THREAD(p); - SRes res = MtThread_Process(p, &stop); - if (res != SZ_OK) - { - MtCoder_SetError(p->mtCoder, res); - MtProgress_SetError(&p->mtCoder->mtProgress, res); - next->stopReading = True; - next->stopWriting = True; - Event_Set(&next->canRead); - Event_Set(&next->canWrite); - return res; - } - if (stop) - return 0; - } -} - -void MtCoder_Construct(CMtCoder* p) -{ - unsigned i; - p->alloc = 0; - for (i = 0; i < NUM_MT_CODER_THREADS_MAX; i++) - { - CMtThread *t = &p->threads[i]; - t->index = i; - CMtThread_Construct(t, p); - } - CriticalSection_Init(&p->cs); - CriticalSection_Init(&p->mtProgress.cs); -} - -void MtCoder_Destruct(CMtCoder* p) -{ - unsigned i; - for (i = 0; i < NUM_MT_CODER_THREADS_MAX; i++) - CMtThread_Destruct(&p->threads[i]); - CriticalSection_Delete(&p->cs); - CriticalSection_Delete(&p->mtProgress.cs); -} - -SRes MtCoder_Code(CMtCoder *p) -{ - unsigned i, numThreads = p->numThreads; - SRes res = SZ_OK; - p->res = SZ_OK; - - MtProgress_Init(&p->mtProgress, p->progress); - - for (i = 0; i < numThreads; i++) - { - RINOK(CMtThread_Prepare(&p->threads[i])); - } - - for (i = 0; i < numThreads; i++) - { - CMtThread *t = &p->threads[i]; - CLoopThread *lt = &t->thread; - - if (!Thread_WasCreated(<->thread)) - { - lt->func = ThreadFunc; - lt->param = t; - - if (LoopThread_Create(lt) != SZ_OK) - { - res = SZ_ERROR_THREAD; - break; - } - } - } - - if (res == SZ_OK) - { - unsigned j; - for (i = 0; i < numThreads; i++) - { - CMtThread *t = &p->threads[i]; - if (LoopThread_StartSubThread(&t->thread) != SZ_OK) - { - res = SZ_ERROR_THREAD; - p->threads[0].stopReading = True; - break; - } - } - - Event_Set(&p->threads[0].canWrite); - Event_Set(&p->threads[0].canRead); - - for (j = 0; j < i; j++) - LoopThread_WaitSubThread(&p->threads[j].thread); - } - - for (i = 0; i < numThreads; i++) - CMtThread_CloseEvents(&p->threads[i]); - return (res == SZ_OK) ? p->res : res; -} |