多线程并发访问，等待同一事件退出。

DWORD WINAPI MultiConnectionThread2(LPVOID lpParam){ ::CoInitialize(NULL); PTHREADDATA pData = (PTHREADDATA)lpParam; LARGE_INTEGER countstart, countstartTotal, countstartTotalUnlock; LARGE_INTEGER countend, countendTotal, countendTotalUnlock; __int64 timediff, timediffTotal, timediffTotalUnlock; LARGE_INTEGER frequent, frequentTotal, frequentTotalUnlock; double dsec0, dsec1, dsec2, dsec3, dsec4, dsec5, dsec6, dsec7, dsec8, dsec9; double dsec10, dsec11, dsec12, dsec13, dsec14, dsec15, dsec16, dsec17, dsec18; for (long i = 1; i > 0; i++) { DWORD dwWait = ::WaitForSingleObject(hEvent, 0); if (dwWait == WAIT_OBJECT_0) { // Exit event has been triggered. TRACE(L"Exit thread #%d/n", pData->dwThreadid); break; } QueryPerformanceCounter(&countstartTotal); QueryPerformanceCounter(&countstart); cs.Lock(); //******************************************************************************** QueryPerformanceCounter(&countend); timediff = (__int64)countend.QuadPart-(__int64)countstart.QuadPart; QueryPerformanceFrequency(&frequent); dsec1 = (double)timediff/(double)frequent.QuadPart; //******************************************************************************** QueryPerformanceCounter(&countstart); lCount++; for (long j = 1; j < 5; j++) { long lYu = lCount % j ; TRACE(L"lCount = %d, %d/n", lCount, lYu); } //Sleep(1); //******************************************************************************** QueryPerformanceCounter(&countend); timediff = (__int64)countend.QuadPart-(__int64)countstart.QuadPart; QueryPerformanceFrequency(&frequent); dsec2 = (double)timediff/(double)frequent.QuadPart; //******************************************************************************** QueryPerformanceCounter(&countstart); cs.Unlock(); //******************************************************************************** QueryPerformanceCounter(&countend); timediff = (__int64)countend.QuadPart-(__int64)countstart.QuadPart; QueryPerformanceFrequency(&frequent); dsec3 = (double)timediff/(double)frequent.QuadPart; //******************************************************************************** //******************************************************************************** QueryPerformanceCounter(&countendTotal); timediffTotal = (__int64)countendTotal.QuadPart-(__int64)countstartTotal.QuadPart; QueryPerformanceFrequency(&frequentTotal); dsec0 = (double)timediffTotal/(double)frequentTotal.QuadPart; //******************************************************************************** //***************************************************************************** cs_file.Lock(); HANDLE hFile; DWORD dwBytes=0; hFile=CreateFile(L"C://ilog//LockTesting.txt",GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); SetFilePointer(hFile,NULL,NULL,FILE_END);//移动至文件尾部 //CTime t=CTime::GetTickCount(); CStringW strw;//=t.Format(L"[%Y-%m-%d %H:%M:%S] "); strw.Format(L"%f/t%f/t%f/t%f/r/n", dsec1, dsec2, dsec3, dsec0); WriteFile(hFile,strw.GetBuffer(),strw.GetLength()*sizeof(WCHAR),&dwBytes,NULL); if (hFile!=INVALID_HANDLE_VALUE) { CloseHandle(hFile); } cs_file.Unlock(); //***************************************************************************** } ::CoUninitialize(); return 0;}void ThreadTesting(){ const int MAXTHREADS = 50; PTHREADDATA pData; DWORD dwThreadIds[MAXTHREADS]; HANDLE hThreads[MAXTHREADS]; hEvent = CreateEvent(NULL,TRUE,FALSE,NULL); long i; // Create MAX_THREADS worker threads. for( i=0; i<MAXTHREADS; i++ ) { // Allocate memory for thread data. pData = (PTHREADDATA) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(THREADDATA)); if( pData == NULL ) break; // Generate unique data for each thread. pData->nSeq = i; pData->nVal2 = i+100; pData->dwThreadid = -1; hThreads[i] = CreateThread( NULL, // default security attributes 0, // use default stack size MultiConnectionThread2, // thread function pData, // argument to thread function 0, // use default creation flags &pData->dwThreadid); // returns the thread identifier dwThreadIds[i] = pData->dwThreadid; TRACE(_T("Create success: %d/r/n"), pData->dwThreadid); // Check the return value for success. // If failure, close existing thread handles, // free memory allocation, and exit. /* if (hThreads[i] == NULL) { for(i=0; i<MAXTHREADS; i++) { if (hThreads[i] != NULL) { CloseHandle(hThreads[i]); } } HeapFree(GetProcessHeap(), 0, pData); pData = NULL; ExitProcess(i); }*/ } Sleep(60*1000); SetEvent(hEvent); //// Wait until all threads have terminated. WaitForMultipleObjects(MAXTHREADS, hThreads, TRUE, INFINITE); // Close all thread handles and free memory allocation. for(i=0; i<MAXTHREADS; i++) { CloseHandle(hThreads[i]); }}