c++ 多线程

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

DWORD WINAPI Fun1Proc( LPVOID lpParameter  );

DWORD WINAPI Fun2Proc( LPVOID lpParameter  );

int index=0;

int tickets=100;

HANDLE hMutex;//互斥句柄

 

void main() {  

HANDLE hThread1;  

HANDLE hThread2;  

hThread1=CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);  

hThread2=CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);  

hMutex=CreateMutex(NULL,FALSE,"MutexName");  

//FALSE是创建的mutex不属于任何一个进程，每个mutex里有一个计数器，记录  

//当前mutex所属的进程的调用次数

 Sleep(4000);  //主线程结束，其他的线程也要结束，故在此停留，把执行机会留给其他的子线程 }

DWORD WINAPI Fun1Proc(   LPVOID lpParameter )

{    while(TRUE)  {   

  WaitForSingleObject(hMutex,INFINITE);   

//当计数器为0时，mutex的进程id标示为fun1进程，计数器为1   

if(tickets>0)   {    

Sleep(1);    

cout<<"thread1 sell ticket : "<<tickets--<<endl;   

}   

else    break;   

ReleaseMutex(hMutex);   //释放mutex，计数器值减1，此时为0  

}  

cout<<"thread1 is running"<<endl;  

return 0;

}

DWORD WINAPI Fun2Proc(   LPVOID lpParameter   ) {    

while(TRUE)  {   

WaitForSingleObject(hMutex,INFINITE);   

if(tickets>0)   {    

Sleep(1);    

cout<<"thread2 sell ticket : "<<tickets--<<endl;  

 }  

 else   

 break;   

ReleaseMutex(hMutex);

 }  

cout<<"thread2 is running"<<endl;

 return 0;

}