Alexander Suvorov
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/* Threads.c -- multithreading library
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2008-08-05
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Igor Pavlov
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Public domain */
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#include "crn_core.h"
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#include "lzma_Threads.h"
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#include <process.h>
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namespace crnlib {
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static WRes GetError() {
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DWORD res = GetLastError();
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return (res) ? (WRes)(res) : 1;
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}
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WRes HandleToWRes(HANDLE h) {
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return (h != 0) ? 0 : GetError();
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}
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WRes BOOLToWRes(BOOL v) {
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return v ? 0 : GetError();
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}
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static WRes MyCloseHandle(HANDLE* h) {
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if (*h != NULL)
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if (!CloseHandle(*h))
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return GetError();
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*h = NULL;
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return 0;
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}
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WRes Thread_Create(CThread* thread, THREAD_FUNC_RET_TYPE(THREAD_FUNC_CALL_TYPE* startAddress)(void*), LPVOID parameter) {
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unsigned threadId; /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */
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thread->handle =
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/* CreateThread(0, 0, startAddress, parameter, 0, &threadId); */
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(HANDLE)_beginthreadex(NULL, 0, startAddress, parameter, 0, &threadId);
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/* maybe we must use errno here, but probably GetLastError() is also OK. */
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return HandleToWRes(thread->handle);
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}
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WRes WaitObject(HANDLE h) {
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return (WRes)WaitForSingleObject(h, INFINITE);
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}
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WRes Thread_Wait(CThread* thread) {
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if (thread->handle == NULL)
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return 1;
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return WaitObject(thread->handle);
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}
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WRes Thread_Close(CThread* thread) {
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return MyCloseHandle(&thread->handle);
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}
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WRes Event_Create(CEvent* p, BOOL manualReset, int initialSignaled) {
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p->handle = CreateEvent(NULL, manualReset, (initialSignaled ? TRUE : FALSE), NULL);
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return HandleToWRes(p->handle);
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}
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WRes ManualResetEvent_Create(CManualResetEvent* p, int initialSignaled) {
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return Event_Create(p, TRUE, initialSignaled);
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}
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WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent* p) {
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return ManualResetEvent_Create(p, 0);
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}
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WRes AutoResetEvent_Create(CAutoResetEvent* p, int initialSignaled) {
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return Event_Create(p, FALSE, initialSignaled);
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}
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WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent* p) {
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return AutoResetEvent_Create(p, 0);
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}
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WRes Event_Set(CEvent* p) {
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return BOOLToWRes(SetEvent(p->handle));
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}
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WRes Event_Reset(CEvent* p) {
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return BOOLToWRes(ResetEvent(p->handle));
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}
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WRes Event_Wait(CEvent* p) {
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return WaitObject(p->handle);
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}
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WRes Event_Close(CEvent* p) {
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return MyCloseHandle(&p->handle);
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}
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WRes Semaphore_Create(CSemaphore* p, UInt32 initiallyCount, UInt32 maxCount) {
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p->handle = CreateSemaphore(NULL, (LONG)initiallyCount, (LONG)maxCount, NULL);
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return HandleToWRes(p->handle);
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}
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WRes Semaphore_Release(CSemaphore* p, LONG releaseCount, LONG* previousCount) {
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return BOOLToWRes(ReleaseSemaphore(p->handle, releaseCount, previousCount));
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}
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WRes Semaphore_ReleaseN(CSemaphore* p, UInt32 releaseCount) {
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return Semaphore_Release(p, (LONG)releaseCount, NULL);
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}
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WRes Semaphore_Release1(CSemaphore* p) {
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return Semaphore_ReleaseN(p, 1);
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}
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WRes Semaphore_Wait(CSemaphore* p) {
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return WaitObject(p->handle);
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}
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WRes Semaphore_Close(CSemaphore* p) {
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return MyCloseHandle(&p->handle);
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}
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WRes CriticalSection_Init(CCriticalSection* p) {
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#ifdef _MSC_VER
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/* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */
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__try {
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InitializeCriticalSection(p);
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/* InitializeCriticalSectionAndSpinCount(p, 0); */
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} __except (EXCEPTION_EXECUTE_HANDLER) {
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return 1;
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}
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#else
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InitializeCriticalSection(p);
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#endif
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return 0;
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}
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}
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