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std::chrono...ution_clock(3) C++ Standard Libary std::chrono...ution_clock(3) NAME std::chrono::high_resolution_clock - std::chrono::high_resolution_clock Synopsis Defined in header <chrono> class high_resolution_clock; (since C++11) Class std::chrono::high_resolution_clock represents the clock with the smallest tick period provided by the implementation. It may be an alias of std::chrono::system_clock or std::chrono::steady_clock, or a third, independent clock. std::chrono::high_resolution_clock meets the requirements of Triv- ialClock. Member types Member type Definition rep arithmetic type representing the number of ticks in the clock's duration period a std::ratio type representing the tick period of the clock, in seconds duration std::chrono::duration<rep, period> time_point std::chrono::time_point<std::chrono::high_resolu- tion_clock> Member constants true if the time between ticks is always constant, i.e. constexpr bool is_steady calls to now() return values that increase monotonically [static] even in case of some external clock adjust- ment, otherwise false (public static member constant) Member functions now returns a std::chrono::time_point representing the current value of the [static] clock (public static member function) Notes The high_resolution_clock is not implemented consistently across different standard library implementations, and its use should be avoided. It is often just an alias for std::chrono::steady_clock or std::chrono::system_clock, but which one it is depends on the library or configuration. When it is a system_clock, it is not monotonic (e.g., the time can go backwards). For example, for gcc's libstdc++ it is system_clock, for MSVC it is steady_clock, and for clang's libc++ it depends on configuration. Generally one should just use std::chrono::steady_clock or std::chrono::system_clock directly instead of std::chrono::high_resolution_clock: use steady_clock for duration measurements, and system_clock for wall-clock time. See also system_clock wall clock time from the system-wide realtime clock (C++11) (class) steady_clock monotonic clock that will never be adjusted (C++11) (class) http://cppreference.com 2022.07.31 std::chrono...ution_clock(3)
NAME | Synopsis | Member types | Member constants | Member functions | Notes | See also
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