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*注:(此代码必背

##

#include <windows.h>
#include <iostream>

int tickets = 100;
HANDLE hMutex;

DWORD WINAPI FunProc1(LPVOID param)
{
    while (TRUE)
    {
        WaitForSingleObject(hMutex, INFINITE);
        if (tickets > 0)
        {
            std::cout << "thread1 sell ticket:" << tickets-- << std::endl;
        }
        else
            break;
        ReleaseMutex(hMutex);
    }
    return 0;
}
DWORD WINAPI FunProc2(LPVOID param)
{
    while (TRUE)
    {
        WaitForSingleObject(hMutex, INFINITE);
        if (tickets > 0)
        {
            std::cout << "thread2 sell ticket:" << tickets-- << std::endl;
        }
        else
            break;
        ReleaseMutex(hMutex);
    }
    return 0;
}

int main()
{
    HANDLE hThread1, hThread2;
    hMutex = CreateMutex(NULL, FALSE, NULL);//创建互斥体的线程(也就是此主线程)不拥有
    //互斥对象,操作系统会将计数置为0,设为有信号状态。
    hThread1 = CreateThread(NULL, 0, FunProc1, NULL, 0, NULL);
    hThread2 = CreateThread(NULL, 0, FunProc2, NULL, 0, NULL);
    CloseHandle(hThread1);
    CloseHandle(hThread2);
    Sleep(4000);
}

注释:

在创建互斥对象时,第二个参数为FALSE值,表明当前没有线程拥有这个互斥对象,于是操作系统就会将该互斥对象设置为有信号状态。

 

posted on 2017-10-22 17:12  LuoTian  阅读(499)  评论(0编辑  收藏  举报