std::chrono::file_clock - cppreference.com (original) (raw)

| | | | | --------------------------------------- | | ------------- | | using file_clock = /* see below */; | | (since C++20) |

std::chrono::file_clock is an alias for the clock used for std::filesystem::file_time_type. Its epoch is unspecified.

file_clock meets the TrivialClock requirements.

Time point family

| Defined in namespace std::chrono | | | | --------------------------------------------------------------------------------------------------------------------------------- | | ------------- | | template<class Duration> using file_time = std::chrono::time_point<std::chrono::file_clock, Duration>; | | (since C++20) |

[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_pointstd::chrono::file\_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, otherwise false (public static member constant)

[edit] Member functions

file_clock provides exactly one of the following two pairs of static member functions: