多线程的同步

来源：互联网发布：office mac 激活编辑：程序博客网时间：2024/05/11 23:13

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

DWORD WINAPI Fun1Proc(
LPVOID lpParameter //thread data
);

DWORD WINAPI Fun2Proc(
LPVOID lpParameter //thread data
);

int tickets = 100,num = 0;

HANDLE g_hEvent;
void main()
{
    HANDLE hThread1,hThread2;//创建线程的句柄
    hThread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);//创建一个线程
    hThread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);//创建一个线程
    CloseHandle(hThread1);//关闭句柄，并没有终止新创建的线程
    CloseHandle(hThread2);//关闭句柄，并没有终止新创建的线程
    //为了线程间同步不要采用人工事件对象
    g_hEvent = CreateEvent(NULL,FALSE,FALSE,NULL);//创建自动事件对象，初始状态设置为了非信号状态

Sleep(8000);
CloseHandle(g_hEvent);
}

DWORD WINAPI Fun1Proc(
LPVOID lpParameter //thread data
)
{
    while(TRUE)
    {
        WaitForSingleObject(g_hEvent,INFINITE);//申请事件对象，是否有信号
        //ResetEvent(g_hEvent);
        if (tickets > 0){
            Sleep(100);
            num++;
            cout << "thread1 sell ticket : " << tickets-- << endl;
        }
        else{
            cout << num << endl;
            break;
        }
        SetEvent(g_hEvent);
    }

    return 0;
}

DWORD WINAPI Fun2Proc(
LPVOID lpParameter //thread data
)
{
    while(TRUE)
    {
        WaitForSingleObject(g_hEvent,INFINITE);
        //ResetEvent(g_hEvent);
        if (tickets > 0){
            num++;
            Sleep(1);
            cout << "thread2 sell ticket : " << tickets-- << endl;
        }
        else{
            cout << num << endl;
            break;
        }
        SetEvent(g_hEvent);
    }
    return 0;
}