线程的同步

yunboy — Sat, 25 Jul 2009 14:48:00 GMT

1.用事件对象来控制线程
//Define thread function
DWORD __stdcall ThreadFunOne(LPVOID lParam)
{
    for(;;)
    {
        WaitForSingleObject(hEvent, INFINITE);      //阻塞线程，直到事件对象为通知状态
        if (WorkerID<MAXWORKERID)
        {

            WorkerID +=1;
            Sleep(1000);
            printf("ThreadOne print out: %i \n",WorkerID);
        }
        SetEvent(hEvent);       //设置事件为通知状态
    }
    return 0;
}
DWORD __stdcall ThreadFunTwo(LPVOID lParam)
{
    for(;;)
    {
        WaitForSingleObject(hEvent, INFINITE);
        if (WorkerID<MAXWORKERID)
        {
            WorkerID +=1;
            printf("ThreadTwo print out: %i \n",WorkerID);
            Sleep(1000);
        }
        SetEvent(hEvent);
    }
    return 0;
}
void main()
{
    //Define thread handle
    HANDLE hThread1,hThread2;
    hEvent = CreateEvent(NULL, FALSE, TRUE, "Event");
    //Create thread
    hThread1 = ::CreateThread(NULL,0,ThreadFunOne,NULL,0,NULL);
    hThread2 = ::CreateThread(NULL,0,ThreadFunTwo,NULL,0,NULL);
    //Close thread handle
    CloseHandle(hThread1);
    CloseHandle(hThread2);
    //Note: Prevent process exiting
    while (true)
    {
        ;
    }
}

2.用临界区来控制线程
DWORD __stdcall ThreadFunOne(LPVOID lParam)
{
    for(;;)
    {
        EnterCriticalSection(&Section);
        if (WorkerID<MAXWORKERID)
        {

            WorkerID +=1;
            Sleep(1000);
            printf("ThreadOne print out: %i \n",WorkerID);
        }
        LeaveCriticalSection(&Section);
    }
    return 0;
}
DWORD __stdcall ThreadFunTwo(LPVOID lParam)
{
    for(;;)
    {
        EnterCriticalSection(&Section);
        if (WorkerID<MAXWORKERID)
        {
            WorkerID +=1;
            printf("ThreadTwo print out: %i \n",WorkerID);
            Sleep(1000);
        }
        LeaveCriticalSection(&Section);
    }
    return 0;
}
void main()
{
    //Define thread handle
    HANDLE hThread1,hThread2;
    InitializeCriticalSection(&Section);
    //Create thread
    hThread1 = ::CreateThread(NULL,0,ThreadFunOne,NULL,0,NULL);
    hThread2 = ::CreateThread(NULL,0,ThreadFunTwo,NULL,0,NULL);
    //Close thread handle
    CloseHandle(hThread1);
    CloseHandle(hThread2);
    //Note: Prevent process exiting
    while (true)
    {
        ;
    }
}

3.用互斥来控制线程
DWORD __stdcall ThreadFunOne(LPVOID lParam)
{
    for(;;)
    {
        WaitForSingleObject(hMutex, INFINITE);
        if (WorkerID<MAXWORKERID)
        {

            WorkerID +=1;
            Sleep(1000);
            printf("ThreadOne print out: %i \n",WorkerID);
        }
        ReleaseMutex(hMutex);
    }
    return 0;
}
DWORD __stdcall ThreadFunTwo(LPVOID lParam)
{
    for(;;)
    {
        WaitForSingleObject(hMutex, INFINITE);
        if (WorkerID<MAXWORKERID)
        {
            WorkerID +=1;
            printf("ThreadTwo print out: %i \n",WorkerID);
            Sleep(1000);
        }
        ReleaseMutex(hMutex);
    }
    return 0;
}
void main()
{
    //Define thread handle
    HANDLE hThread1,hThread2;
    hMutex = CreateMutex(NULL, FALSE, "mutex");
    //Create thread
    hThread1 = ::CreateThread(NULL,0,ThreadFunOne,NULL,0,NULL);
    hThread2 = ::CreateThread(NULL,0,ThreadFunTwo,NULL,0,NULL);
    //Close thread handle
    CloseHandle(hThread1);
    CloseHandle(hThread2);
    //Note: Prevent process exiting
    while (true)
    {
        ;
    }
}

yunboy 2009-07-25 22:48 发表评论

C++博客-云的天空-随笔分类-进程与线程

线程的同步