event.cpp

计算机售票模拟程序,VC多线程实现.供参考

#include <windows.h>
#include <iostream.h>
DWORD WINAPI Fun1Proc(
					  LPVOID lpParameter);
DWORD WINAPI Fun2Proc(
					  LPVOID lpParameter);

int tickets=100;
HANDLE g_hEvent;


void main()
{
    HANDLE hThread1;
	HANDLE hThread2;
	hThread1=CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
	hThread2=CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
	CloseHandle(hThread1);
	CloseHandle(hThread2);
	//g_hEvent=CreateEvent(NULL,FALSE,FALSE,NULL);
	g_hEvent=CreateEvent(NULL,FALSE,FALSE,"tickets");
	if(g_hEvent)
	{
		if(ERROR_ALREADY_EXISTS==GetLastError())
		{
			cout<<"only instance can run!"<<endl;
			return;
		}
	}
	SetEvent(g_hEvent);
	Sleep(4000);
	CloseHandle(g_hEvent);
}
DWORD WINAPI Fun1Proc(
					  LPVOID lpParameter)
{
	//while(index++<1000)
	//cout<<"thread1 is running"<<endl;
	while(TRUE)

	{
		WaitForSingleObject(g_hEvent,INFINITE);
		if(tickets>0)
		{
			Sleep(1);
		    cout<<"thread1 sell ticket:"<<tickets--<<endl;
		}
		else
			break;
	SetEvent(g_hEvent);
	}
	return 0;
}
DWORD WINAPI Fun2Proc(
					  LPVOID lpParameter)
{
	while(TRUE)
	{
		WaitForSingleObject(g_hEvent,INFINITE);
		if(tickets>0)
		{
			Sleep(1);
			cout<<"thread2 sell ticket:"<<tickets--<<endl;
		}
		else

			break;
		SetEvent(g_hEvent);
	}
	return 0;
}