#include <windows.h> #include <iostream> using namespace std; DWORD WINAPI ThreadOne(LPVOID lpParameter); DWORD WINAPI ThreadTwo(LPVOID lpParameter); int ticket=100; HANDLE hMutex; void main() { /** *互斥对象(mutex)属于内核对象,它能确保线程拥有对单个资源的互斥访问权 *互斥对象包含一个线程ID和一个计数器 *线程ID标识系统中当前哪个线程拥有互斥对象,计数器用于指明该线程拥有互斥对象的次数 */ hMutex=CreateMutex(NULL,FALSE,NULL); //创建一个互斥对象,但主线程并不拥有该互斥对象,且该互斥对象处于有信号状态 /*For the second value, If it is TRUE and the caller created the mutex, *the calling thread obtains initial ownership of the mutex object. *Otherwise, the calling thread does not obtain ownership of the mutex. */ HANDLE handle1; HANDLE handle2; /** *第5个参数若为0,则创建线程后,立即执行该线程, *若是CREATE_SUSPENDED,则应调用ResumeThread(),来启动线程 */ handle1=CreateThread(NULL,0,ThreadOne,NULL,0,NULL); handle2=CreateThread(NULL,0,ThreadTwo,NULL,0,NULL); CloseHandle(handle1); CloseHandle(handle2); Sleep(1000); } DWORD WINAPI ThreadOne(LPVOID lpParameter) { while(true) { WaitForSingleObject(hMutex,INFINITE); //如果互斥对象处于有信号状态,当前线程获得互斥对象的访问权, //并且将互斥对象置为无信号状态 if(ticket>0) { Sleep(1); cout<<"Thread 1 sells ticket :"<<ticket--<<endl; } else break; ReleaseMutex(hMutex);//释放该互斥对象 } return 0; } DWORD WINAPI ThreadTwo(LPVOID lpParameter) { while(true) { WaitForSingleObject(hMutex,INFINITE); if(ticket>0) { Sleep(1); cout<<"Thread 2 sells ticket :"<<ticket--<<endl; } else break; ReleaseMutex(hMutex); } return 0; }
现在正在学习操作系统,讲到线程同步那里,想在windows下创建线程,来做实验,可是发现很久以前学习的东西都忘了,到谷歌,百度上去搜,搜出来的都不尽如人意,最后才想起来我的博客上,曾经记载了相关方面的内容,虽然不怎么详细,但是是自己写的,看起来很是舒服。还是平时多做笔记好啊。