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標(biāo)題: C++創(chuàng)建線程互斥對(duì)象 [打印本頁(yè)]

作者: liuyuxi 時(shí)間: 2015-1-11 00:38
標(biāo)題: C++創(chuàng)建線程互斥對(duì)象
#include <windows.h>//包含頭文件
#include <stdio.h>

DWORD WINAPI myfun1(//聲明線程函數(shù)
  LPVOID lpParameter
);
DWORD WINAPI myfun2(
  LPVOID lpParameter
);
HANDLE hmutex;
int a=0;//定義全局變量a
main()
{
  hmutex=::CreateMutex(NULL,FALSE,NULL);//創(chuàng)建互斥對(duì)象并返回其句柄
  HANDLE h1,h2;//定義線程句柄
h1=::CreateThread(NULL,0,myfun1,NULL,0,NULL);//創(chuàng)建線程1
printf("線程1開(kāi)始運(yùn)行！\r\n");
h2=::CreateThread(NULL,0,myfun2,NULL,0,NULL);//創(chuàng)建線程2
printf("線程2開(kāi)始運(yùn)行！\r\n");
::CloseHandle(h1);//關(guān)閉線程句柄對(duì)象
::CloseHandle(h2);
      ::Sleep(100000);//程序睡眠10秒
return 0;

  }

DWORD WINAPI myfun1(LPVOID lpParameter) //線程函數(shù)1
{
while(1)
{
::WaitForSingleObject(hmutex,INFINITE);//請(qǐng)求事件對(duì)象

if(a<10000)
      {
   a+=1;//變量自加
   ::Sleep(1000);//線程睡眠1秒
         printf("線程1：%d\r\n",a);
   ::ReleaseMutex(hmutex);
//釋放互斥對(duì)象句柄
      }
else
{
::ReleaseMutex(hmutex);//釋放互斥對(duì)象句柄
      break;//跳出循環(huán)
      }

}

return 0;//線程
}

DWORD WINAPI myfun2(LPVOID lpParameter) //線程函數(shù)2
{
  while(1)
{
::WaitForSingleObject(hmutex,INFINITE);//請(qǐng)求事件對(duì)象

//設(shè)置事件對(duì)象為無(wú)信號(hào)狀態(tài)
if(a<10000)
{
   a+=1;
   ::Sleep(1000);
      printf("線程2：%d\r\n",a);//輸出變量
      ::ReleaseMutex(hmutex);
//釋放互斥對(duì)象句柄
  }
else
{

::ReleaseMutex(hmutex);//釋放互斥對(duì)象句柄
break;
//跳出循環(huán)
}

}

return 0;//線程正常退出
}

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