C++ 日期和时间库 std::chrono::high_resolution_clock 在标头 <chrono> 定义 class high_resolution_clock; (C++11 起) 类std::chrono::high_resolution_clock 表示实现提供的拥有最小计次周期的时钟。它可以是 std::chrono::system_clock 或std::chrono::steady_clock 的别名,或第三种独立时钟。 std...
floor(std::chrono::duration) (C++17) converts a duration to another, rounding down (function template) ceil(std::chrono::duration) (C++17) converts a duration to another, rounding up (function template) round(std::chrono::duration)
floor(std::chrono::duration) (C++17) converts a duration to another, rounding down (function template) round(std::chrono::duration) (C++17) converts a duration to another, rounding to nearest, ties to even (function template) ceil(std::chrono::time_point) ...
std::chrono::ceil(std::chrono::time_point) Defined in header<chrono> template<classToDuration,classClock,classDuration> constexprstd::chrono::time_point<Clock, ToDuration> ceil(conststd::chrono::time_point<Clock, Duration>&tp); (since C++17) ...
#include <chrono>#include <iostream>usingClock=std::chrono::high_resolution_clock;usingTimePoint=std::chrono::time_point<Clock>;voidprint_ms(constTimePoint&point){usingMs=std::chrono::milliseconds;constClock::durationsince_epoch=point.time_since_epoch();std::cout<<std::chrono::duration_cast<...
std::chrono:: cppreference.com Crear una cuenta Página Discusión Ver Editar Historial std::chrono::duration Definido en el archivo de encabezado<chrono> template< classRep, classPeriod=std::ratio<1> >classduration; (desde C++11) La plantilla de clasestd::chrono::durationrepresenta un ...
std::chrono::minutes Zeitintervall mit Zeitschrittweite in min (std::ratio<60>) std::chrono::hours Zeitintervall mit Zeitschrittweite in h (std::ratio<3600>) Funktionen außerhalb der Klasse std::common_type<std::chrono::duration> spezialisiert die Traitsklasse std::common_type....
std::tm*gmtime(conststd::time_t*time); Converts given time since epoch asstd::time_tvalue into calendar time, expressed in Coordinated Universal Time (UTC). Parameters time-pointer to a time_t object to convert Return value Pointer to a static internalstd::tmobject on success, or null ...
std::async 返回一个 std::future 对象,该对象可用于查询异步操作的状态、等待异步操作完成,以及获取异步操作的结果。 4. 使用示例 以下是一个简单的使用示例: cpp #include <iostream> #include <future> #include <chrono> int add(int a, int b) { return a + b; } int main...
(std::chrono::seconds(1));std::unique_lock<std::mutex>lock(m);std::cout<<"producing "<<i<<'\n';produced_nums.push(i);notified=true;cond_var.notify_one();}done=true;notified=true;cond_var.notify_one();});std::threadconsumer([&](){std::unique_lock<std::mutex>lock(m);while...