chrono::steady_clock Struct Reference

Public Types
typedef long long	rep
typedef nano	period
typedef nanoseconds	duration
typedef chrono::time_point< steady_clock >	time_point

Static Public Member Functions
static time_point	now () _NOEXCEPT

Static Public Attributes
static constexpr bool	is_steady = true

Member Typedef Documentation

typedef nanoseconds chrono::steady_clock::duration

typedef nano chrono::steady_clock::period

typedef long long chrono::steady_clock::rep

typedef chrono::time_point<steady_clock> chrono::steady_clock::time_point

Member Function Documentation

static time_point chrono::steady_clock::now ( )

inlinestatic

        {   // get current time
        const long long _Freq = _Query_perf_frequency();    // doesn't change after system boot
        const long long _Ctr = _Query_perf_counter();
        static_assert(period::num == 1, "This assumes period::num == 1.");
        const long long _Whole = (_Ctr / _Freq) * period::den;
        const long long _Part = (_Ctr % _Freq) * period::den / _Freq;
        return (time_point(duration(_Whole + _Part)));
        }

Member Data Documentation

constexpr bool chrono::steady_clock::is_steady = true

static

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The documentation for this struct was generated from the following file:

• VS2015/inc/chrono