[英]Get elapsed time of std::future<T>::wait_for
如果沒有發生超時,是否有一種簡單的方法來獲取std::future<T>::wait_for
時間? 我想要實現以下目標:
std::future<void> futureRet = std::async(std::launch::async, &Someone::doSomething, this);
futureRet.wait_for(std::chrono::seconds(30));
cout << "doSomething returned after <" << futureRet.getElapsedTime() << "> seconds.";
是否有一種“ getElapsedTime()”函數,或者我必須自己計算經過的時間?
使用<chrono>
有一個簡單的方法:
auto start = std::chrono::steady_clock::now();
std::future<void> futureRet = std::async(std::launch::async, &Someone::doSomething, this);
futureRet.wait_for(std::chrono::seconds(30));
auto end = std::chrono::steady_clock::now();
std::chrono::duration<double> elapsed_seconds = end - start;
cout << "doSomething returned after <" << elapsed_seconds.count() << "> seconds.";
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.