std::chrono::system_clock
From cppreference.com
| Defined in header
<chrono>
|
||
| class system_clock;
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(since C++11) | |
Class std::chrono::system_clock represents the system-wide real time wall clock.
It may not be monotonic: on most systems, the system time can be adjusted at any moment. It is the only C++ clock that has the ability to map its time points to C-style time, and, therefore, to be displayed.
std::chrono::system_clock meets the requirements of TrivialClock.
Contents |
[edit] Member types
| Member type | Definition |
rep
|
signed 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>, capable of representing negative durations |
time_point
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std::chrono::time_point<std::chrono::system_clock> |
[edit] Member constants
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constexpr bool is_steady
[static]
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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 (public static member constant) |
[edit] Member functions
| [static]
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returns a std::chrono::time_point representing the current point in time (public static member function) |
| [static]
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converts a system clock time point to std::time_t (public static member function) |
| [static]
|
converts std::time_t to a system clock time point (public static member function) |
[edit] See also
| (C++11)
|
monotonic clock that will never be adjusted (class) |
| (C++11)
|
the clock with the shortest tick period available (class) |