c++ mutex

来源：互联网发布：chakra linux 编辑：程序博客网时间：2024/06/08 01:52

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

DWORD WINAPI Fun1Proc(LPVOID lpParameter);//thread data
DWORD WINAPI Fun2Proc(LPVOID lpParameter);//thread data

int index=0;
int tickets=10;
HANDLE hMutex;

void main()
{
    HANDLE hThread1;
    HANDLE hThread2;

    //创建互斥对象
    hMutex=CreateMutex(NULL,false,"tickets");

if (hMutex)
    {
        if (ERROR_ALREADY_EXISTS==GetLastError())
        {
            cout<<"only one instance can run!"<<endl;
            return;
        }
    }

    //创建线程
    hThread1=CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
    hThread2=CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
    CloseHandle(hThread1);
    CloseHandle(hThread2);

    Sleep(2000);
}
//线程1的入口函数
DWORD WINAPI Fun1Proc(LPVOID lpParameter)//thread data
{
    while (true)
    {

        WaitForSingleObject(hMutex,INFINITE);

        if (tickets>0)
        {
            Sleep(1);
            cout<<"thread1 sell ticket :"<<tickets--<<endl;
        }
        else
  {

            break;

  }
  ReleaseMutex(hMutex);

    }

    return 0;
}
//线程2的入口函数
DWORD WINAPI Fun2Proc(LPVOID lpParameter)//thread data
{
    while (true)
    {

        WaitForSingleObject(hMutex,INFINITE);
        if (tickets>0)
        {
            Sleep(1);
            cout<<"thread2 sell ticket :"<<tickets--<<endl;
        }
        else
  {
            break;
  }
  ReleaseMutex(hMutex);

    }

    return 0;
}