std::chrono::high_resolution_clock

C++

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C-style date and time

std::chrono::high_resolution_clock

Member functions

high_resolution_clock::now

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 TrivialClock.

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_resolution_clock>

Member constants

constexpr bool is_steady [static]

true if the time between ticks is always constant, i.e. calls to now() return values that increase monotonically even in case of some external clock adjustment, otherwise false (public static member constant)

Member functions

now [static]

returns a std::chrono::time_point representing the current value of the clock (public static member function)

See also

system_clock (C++11)	wall clock time from the system-wide realtime clock (class)
steady_clock (C++11)	monotonic clock that will never be adjusted (class)