简单的多线程同步的示例

线程同步与互斥锁

最新推荐文章于 2021-11-28 17:05:59 发布

原创最新推荐文章于 2021-11-28 17:05:59 发布 · 769 阅读

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#多线程 Mutex

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#include "stdafx.h"
#include <windows.h>   
#include <iostream>
#include <string.h>

using namespace std;

DWORD WINAPI Fun1Proc(LPVOID lpParameter);
DWORD WINAPI Fun2Proc(LPVOID lpParameter);

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

int _tmain(int argc, _TCHAR* argv[])
{
      	HANDLE hThread1;
	HANDLE hThread2;

	hThread1 = CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
 	hThread2 = CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
	CloseHandle(hThread1);
	CloseHandle(hThread2);

	//创建互斥对象
	hMutex = CreateMutex(NULL,TRUE,_T("tickets"));
	if(hMutex)
	{
		if (ERROR_ALREADY_EXISTS == ::GetLastError())
		{
			cout<<"only one instance can run!"<<endl;
			return 0;
		}
	}
	WaitForSingleObject(hMutex,INFINITE);
	ReleaseMutex(hMutex);
	ReleaseMutex(hMutex);

	Sleep(4000);

	system("pause");
	cout<<endl;
	return 0;
}

//线程1的入口函数   
DWORD WINAPI Fun1Proc(LPVOID lpParameter)//thread data   
{   
	while (true)   
	{   
		ReleaseMutex(hMutex);   
		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)   
	{   
		ReleaseMutex(hMutex);   
		WaitForSingleObject(hMutex,INFINITE);   
		if (tickets>0)   
		{   
			Sleep(1);   
			cout<<"thread2 sell ticket :"<<tickets--<<endl;   
		}   
		else  
			break;   
		ReleaseMutex(hMutex);   
	}   

	return 0;   
}