std::chrono::steady_clock

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Utilities library
Date and time utilities
time_point (C++11) duration (C++11) system_clock (C++11) steady_clock (C++11) high_resolution_clock (C++11) C library facilities

Defined in header <chrono>
Defined in namespace std::chrono
class steady_clock;		(C++11 feature)

Class std::chrono::steady_clock represents a monotonic clock. The time points of this clock cannot decrease as physical time moves forward. This clock is not related to wall clock time, and is best suitable for measuring intervals.

Contents 1 Member types 2 Member constants 3 Member functions 4 See also

[edit] Member types

Member type	Definition
rep	arithmetic type representing the number of ticks in the clock's duration
period	an 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::steady_clock>

[edit] Member constants

is_steady	steady clock flag, always true (public static member constant)

[edit] Member functions

now [static]	returns a time_point representing the current value of the clock (public static member function)

[edit] See also

system_clock (C++11)	wall clock time from the system-wide realtime clock (class)
high_resolution_clock (C++11)	the clock with the shortest tick period available (class)