c++11 并发 条件变量 超时等待的代码练习

资料地址

http://en.cppreference.com/w/cpp/thread/condition_variable/wait_until

http://www.cnblogs.com/haippy/p/3252041.html

 // asdasdwa.cpp: 定义控制台应用程序的入口点。
 //

 #include "stdafx.h"

 #include <mutex>                // std::mutex, std::unique_lock
 #include <iostream>
 #include <string>
 #include <atomic>
 #include <condition_variable>
 #include <thread>
 #include <chrono>
 #include <vector>

 #include <windows.h>
 using namespace std::chrono_literals;

 /*
 作 者: itdef 欢迎转帖 请保持文本完整并注明出处
 技术博客 http://www.cnblogs.com/itdef/
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 */

 std::condition_variable cv;
 std::mutex mtx;
 std::vector<std::string> messageVec;

 std::atomic<int> i;

 void SingalFunc() {
     std::lock_guard<std::mutex> lock(mtx);
     messageVec.push_back("1234567890test.hello world!");
     std::cout << "push" << std::endl;
     cv.notify_one();
 }

 void WaitTimeOutFunc1()
 {
     while()
     {
         std::unique_lock<std::mutex> lck(mtx);
         auto now = std::chrono::system_clock::now();
         if (cv.wait_until(lck, now + 2s, []() {return !messageVec.empty(); })) {
             std::cerr << "Thread " << " finished waiting. " << std::endl;
             messageVec.pop_back();
         }
         else {
             std::cerr << "Thread " << " timed out." << std::endl;
             return;
         }
     }
 }

 void WaitTimeOutFunc()
 {
     while()
     {
         std::unique_lock<std::mutex> lck(mtx);
         std::cv_status status = std::cv_status::timeout;
         auto now = std::chrono::system_clock::now();
         while (messageVec.empty()) {
             status = cv.wait_until(lck, now + 1s);
             if (status == std::cv_status::timeout) {
                 std::cout << i << " timeout" << std::endl;
                 return;
             }
         }

         i.fetch_add();
         std::cout << i << " no_timeout" << std::endl;
         //    std::cout  << messageVec.back() << std::endl;
         messageVec.pop_back();
     }
     return;
 }

 int main()
 {
     std::thread t[];
     for (int i = ; i < ; i++) {
         SingalFunc();
     }
     for (int i = ; i <; i++) {
         t[i] = std::thread(WaitTimeOutFunc);
     }

     //for (int i = 0; i < 5000; i++) {
     //    SingalFunc();
     //}

     for (int i = ; i < ; i++) {
         t[i].join();
     }

     return ;
 }