std::chrono::system_clock
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                    | Defined in header  <chrono> | ||
| class system_clock; | (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 | std::chrono::time_point<std::chrono::system_clock> | 
[edit] 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 (public static member constant) | 
[edit] Member functions
| [static] | returns a std::chrono::time_point representing the current point in time (public static member function) | 
| [static] | 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) | 


