生产者线程和消费者线程

    多线程编程的经典入门用例。

 

/*生产者消费者线程演示一个生产者线程将int类型的数入列，一个消费者线程将int类型的数出列*/#include <windows.h>#include <stdio.h>#include <process.h>#include <iostream>#include <queue>using namespace std;HANDLE ghSemaphore; //信号量const int gMax = 100; //生产(消费)总数std::queue<int> q; //生产入队,消费出队//生产者线程unsigned int __stdcall producerThread(void* pParam) {int n = 0;while(++n <= gMax){//生产q.push(n);cout<<"produce "<<n<<endl;ReleaseSemaphore(ghSemaphore, 1, NULL); //增加信号量Sleep(300);//生产间隔的时间,可以和消费间隔时间一起调节}_endthread(); //生产结束return 0;}//消费者线程unsigned int __stdcall customerThread(void* pParam){int n = gMax;while(n--){WaitForSingleObject(ghSemaphore, 10000);//消费q.pop();cout<<"custom "<<q.front()<<endl;Sleep(500);//消费间隔的时间,可以和生产间隔时间一起调节}//消费结束CloseHandle(ghSemaphore);cout<<"working end."<<endl;_endthread();return 0;}void threadWorking(){ghSemaphore = CreateSemaphore(NULL, 0, gMax, NULL); //信号量来维护线程同步cout<<"working start."<<endl;unsigned threadID;HANDLE handles[2];handles[0] = (HANDLE)_beginthreadex( NULL, 0, producerThread, nullptr, 0, &threadID);handles[1] = (HANDLE)_beginthreadex( NULL, 0, customerThread, nullptr, 0, &threadID); WaitForMultipleObjects(2, handles, TRUE, INFINITE);}int main(){threadWorking();getchar();return 0;}