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*---------------------------------------------------------*\

另一种同步实现\*---------------------------------------------------------*///CRITICAL_SECTION  g_cs;HANDLE     g_hEvent  = NULL;HANDLE     g_hMutex  = NULL;HANDLE     g_hSemaphore = NULL;

static DWORD SynThreadProc1(

        LPVOID lpParameter        ){/*  EnterCriticalSection(&g_cs); AfxMessageBox( _T("SyncThreadProc1") ); LeaveCriticalSection(&g_cs);*//* // 事件对象 WaitForSingleObject(g_hEvent,INFINITE); AfxMessageBox( _T("SyncThreadProc1") ); SetEvent(g_hEvent);*//* // 互斥对象 WaitForSingleObject(g_hMutex,INFINITE); AfxMessageBox( _T("SyncThreadProc1") ); ReleaseMutex(g_hMutex);*//* //  信号量对象 WaitForSingleObject(g_hSemaphore,INFINITE); AfxMessageBox( _T("SyncThreadProc1") ); ReleaseSemaphore( g_hSemaphore , 1, NULL );*/ return 0;}static DWORD SynThreadProc2(        LPVOID lpParameter        ){/* EnterCriticalSection(&g_cs); AfxMessageBox( _T("SyncThreadProc2") ); LeaveCriticalSection(&g_cs);*//*// 事件对象 WaitForSingleObject(g_hEvent,INFINITE); AfxMessageBox( _T("SyncThreadProc2") ); SetEvent(g_hEvent);*//* // 互斥对象 WaitForSingleObject(g_hMutex,INFINITE); AfxMessageBox( _T("SyncThreadProc2") ); ReleaseMutex(g_hMutex);*//*  //  信号量对象 WaitForSingleObject(g_hSemaphore,INFINITE); AfxMessageBox( _T("SyncThreadProc1") ); ReleaseSemaphore( g_hSemaphore , 1, NULL );*/ return 0;}void CMultiThreadDlg::OnBtnUsageEight() { // TODO: Add your control notification handler code here  HANDLE hThread1 = NULL; HANDLE hThread2 = NULL;

 //g_hEvent = CreateEvent(NULL,FALSE,TRUE,NULL);

 //g_hMutex = CreateMutex(NULL,FALSE,NULL); g_hSemaphore = CreateSemaphore(NULL,1,1,NULL);

 hThread1 = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)SynThreadProc1,NULL,0,NULL);

 hThread2 = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)SynThreadProc2,NULL,0,NULL);

 //使用的时候，你要在适当的时候关闭句柄，不是在这里哦

 //if( g_hEvent )  CloseHandle(g_hEvent); //if( g_hMutex )  CloseHandle(g_hMutex); //if( g_hSemaphore ) CloseHandle(g_hSemaphore);  if ( hThread1 ) CloseHandle(hThread1); if ( hThread2 ) CloseHandle(hThread2);}

对于临界区要注意对象的初始化和删除:

InitializeCriticalSection(&g_cs);

DeleteCriticalSection(&g_cs);

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