condition_variable与多线程，互斥锁
来源：互联网 发布：jdk 8u60 linux x32 编辑：程序博客网 时间：2024/05/29 17:28
// condition.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include <iostream>#include <mutex>#include <thread>#include <condition_variable>#include <Windows.h>#include <time.h>#include <chrono>using namespace std;mutex g_mtx;mutex ExitMtx;timed_mutex timemtx;int data[2000] = { 0 };int pos = 0;int max = 0;condition_variable cv;HANDLE g_mtxHandle = nullptr;bool ExitFlag = false;// displayvoid display(){int cnt = 0;while (cnt++ < 200){if (timemtx.try_lock_for(chrono::milliseconds(2000))){cout << "display: " << data[cnt] << endl;Sleep(500);timemtx.unlock();}else{cout << "display time out ......." << endl;}}}// consumervoid Consumer(){int cnt = 0;int postion = 0;while (cnt++ < 20){Sleep(2000);if (timemtx.try_lock_for(chrono::milliseconds(2000))){for (int i = 0; i < 10; ++i){data[postion++] = max++;cout << "Consumer max: " << max << endl;}timemtx.unlock();}else{cout << "Consumer time out ......." << endl;}if (cnt == 10){ExitFlag = true;cv.notify_one();return;}}}int _tmain(int argc, _TCHAR* argv[]){thread t1 = thread(Consumer);thread t2 = thread(display);std::unique_lock<std::mutex> lk(ExitMtx);//cv.wait(lk, []{return ExitFlag; });if (cv.wait_for(lk, chrono::seconds(1)) == std::cv_status::no_timeout){ cout << "waited ExitFlag....." << endl;
}
else{
cout << "waited ExitFlag time out....." << endl;
}
t1.join();
t2.join();
return 0;
} 0 0
