c++ 多线程

//这是2个线程模拟卖火车票的小程序#include <windows.h>#include <iostream.h>DWORD WINAPI Fun1Proc(LPVOID lpParameter);//thread dataDWORD WINAPI Fun2Proc(LPVOID lpParameter);//thread dataint index=0;int tickets=10;HANDLE hMutex;void main(){ HANDLE hThread1; HANDLE hThread2; //创建线程 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,"tickets"); if (hMutex) { if (ERROR_ALREADY_EXISTS==GetLastError()) { cout<<"only one instance can run!"<<endl; return; } } WaitForSingleObject(hMutex,INFINITE); ReleaseMutex(hMutex); ReleaseMutex(hMutex); Sleep(4000);}//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;}