生产者和消费者问题

#include <stdio.h>

#include <process.h>

#include <windows.h>

int g_Buffer;                        //缓冲区

HANDLE g_hEventBufferEmpty, g_hEventBufferFull;

//生产者线程函数

unsigned int __stdcall ProducerThreadFun(PVOID pM)

{

    for (int i = 1; i <= 100; i++)

    {

        //等待缓冲区为空

        WaitForSingleObject(g_hEventBufferEmpty, INFINITE);

        //互斥的访问缓冲区

        g_Buffer = i;

        printf("生产者将数据%d放入缓冲区\n", i);

        //通知缓冲区有新数据了

        SetEvent(g_hEventBufferFull);

    }   

    return 0;

}

//消费者线程函数

unsigned int __stdcall ConsumerThreadFun(PVOID pM)

{

    for (int i = 1; i <= 100; i++)

    {

        //等待缓冲区中有数据

        WaitForSingleObject(g_hEventBufferFull, INFINITE);

        printf("  消费者从缓冲区中取数据%d\n", g_Buffer);

        //通知缓冲区已为空

        SetEvent(g_hEventBufferEmpty);

        Sleep(10);

    }

    return 0;

}

int main()

{

    //创建二个自动复位事件，一个表示缓冲区是否为空，另一个表示缓冲区是否已经处理

    g_hEventBufferEmpty = CreateEvent(NULL, FALSE, TRUE, NULL);

    g_hEventBufferFull = CreateEvent(NULL, FALSE, FALSE, NULL);

    const int THREADNUM = 2;

    HANDLE hThread[THREADNUM];

    hThread[0] = (HANDLE)_beginthreadex(NULL, 0, ProducerThreadFun, NULL, 0, NULL);

    hThread[1] = (HANDLE)_beginthreadex(NULL, 0, ConsumerThreadFun, NULL, 0, NULL);

    WaitForMultipleObjects(THREADNUM, hThread, TRUE, INFINITE);

    CloseHandle(hThread[0]);

    CloseHandle(hThread[1]);

    //销毁事件

    CloseHandle(g_hEventBufferEmpty);

    CloseHandle(g_hEventBufferFull);

    return 0;

}