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C++11 條件變數及時間點的使用

技術標籤:C++11c++11條件變數時間點併發程式設計

#ifndef DOMAIN_H
#define DOMAIN_H

#include <iostream>
#include <thread>
#include <mutex>
#include <condition_variable>
#include <atomic>



class DoMain
{
public:
    DoMain();
    ~DoMain();

    void threadTimerHandle();


private:
    std::mutex              m_mtx;
    std::condition_variable m_cv;
public:
    std::atomic<bool>       m_ready;
};

#endif // DOMAIN_H
#include "domain.h"


DoMain::DoMain()
{
    m_ready = false;
    //已經呼叫了login,在這裡等待
    //std::thread t = std::thread(&DoMain::handleThread, this);
    std::thread t1 = std::thread(&DoMain::threadTimerHandle, this);
    std::unique_lock<std::mutex> lk(m_mtx);

    //auto time = std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();

    //時間點的使用
    auto now = std::chrono::system_clock::now();
    auto toTime = now + std::chrono::seconds(5);

    //阻塞在這裡,直到被喚醒
    m_cv.wait_until(lk, toTime);

    lk.unlock();
    if(t1.joinable())
        t1.join();


    std::cout << "DoMain finish\n" << std::endl;
}

DoMain::~DoMain()
{

}

//定時器執行緒:睡5秒後,條件變數喚醒
void DoMain::threadTimerHandle()
{

    std::this_thread::sleep_for(std::chrono::seconds(5));

    std::cout << "threadTimerHandle\n" << std::endl;

    m_cv.notify_all();
    m_ready = true;
}

更多時間相關的:

https://blog.csdn.net/wizardtoh/article/details/81738682