// 测试运行时间 auto start = std::chrono::steady_clock::now(); // Run code auto end = std::chrono::steady_clock::now(); std::chrono::duration<double> elapsed_seconds = end - start; elapsed_seconds = end - start; std::cout << "ReRender time cc: " << elapsed_seconds.count(...
C++ 日期和时间库 std::chrono::steady_clock 在标头 <chrono> 定义 class steady_clock; (C++11 起) 类std::chrono::steady_clock 表示单调时钟。此时钟的时间点无法随物理时间向前推进而减少。此时钟与壁钟时间无关(例如,它能是上次重启开始的时间),且最适于度量间隔。 std::chrono::steady_clock ...
时钟(std::chrono::steady_clock、std::chrono::high_resolution_clock、std::chrono::system_clock):提供获取当前时间的功能。 时间段(std::chrono::duration):表示时间的长度,允许以不同的单位(例如秒、毫秒、微秒等)进行表示。 3.#include <fstream> ...
clock_t time_stt=clock(); 在执行相关算法处理之后计算用时: (clock()-time_stt)/(double)CLOCKS_PER_SEC(见p46) 2).头文件为:#include <chrono> chrono::steady_clock::time_point t1=chrono::steady_clock::now(); //... //program... //... chrono::steady_clock::time_point t2=chrono::...
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::chrono::high_resolution_clock 满足平凡时钟 (TrivialClock) 的要求。 成员类型...
C++ Date and time library std::chrono::steady_clock static std::chrono::time_point<std::chrono::steady_clock> now() noexcept; (since C++11) Returns a time point representing the current point in time. Return value A time point representing the current time. Example Run this code #...
steady_clock (C++11) high_resolution_clock (C++11) is_clock (C++20) utc_clock (C++20) tai_clock (C++20) gps_clock (C++20) file_clock (C++20) local_t (C++20) Time of day is_amis_pm (C++20)(C++20) make12make24 (C++20)(C++20) hh_mm_ss (C++20) Calendars day (C++20) ...
if (steady_clock::now() - start > timeout) { break; // Timeout } } else { return true; // Ready for read } std::this_thread::sleep_for(microseconds{interval_usec}); } return false; } template <typename T> inline bool process_server_socket_core(const std::atomic<socket_t> &sv...
const auto tic = std::chrono::steady_clock::now(); std::sort(std::execution::par_unseq, sorted.begin(), sorted.end()); const auto toc = std::chrono::steady_clock::now(); tpar_unseq = std::chrono::duration_cast<std::chrono::milliseconds>(toc - tic).count(); print_results("...
"boost::chrono::steady_clock::now()",referencedfrom: pplx::details::event_impl::wait(unsignedint)inwebclient.cpp.o "boost::chrono::system_clock::now()",referencedfrom: pplx::details::event_impl::wait(unsignedint)inwebclient.cpp.o