CPUClock Struct Reference

#include <deal.II/base/timer.h>

Public Types
using	duration = std::chrono::microseconds
using	rep = duration::rep
using	period = duration::period
using	time_point = std::chrono::time_point<CPUClock, duration>

Static Public Member Functions
static time_point	now () noexcept

Static Public Attributes
static const bool	is_steady = true

Detailed Description

A clock, compatible with the std::chrono notion of a clock, whose now() method returns a time point indicating the amount of CPU time that the current process has used.

Definition at line 36 of file timer.h.

Member Typedef Documentation

duration

using CPUClock::duration = std::chrono::microseconds

Duration type. Windows measures CPU times, by default, in multiples of 1/64th of a second and POSIX uses microseconds, so go with microseconds for uniformity.

Definition at line 43 of file timer.h.

rep

using CPUClock::rep = duration::rep

Signed integral type used to store the value returned by count().

Definition at line 48 of file timer.h.

period

using CPUClock::period = duration::period

Ratio representing the length of a period (in seconds).

Definition at line 53 of file timer.h.

time_point

using CPUClock::time_point = std::chrono::time_point<CPUClock, duration>

Time point type.

Definition at line 58 of file timer.h.

Member Function Documentation

now()

CPUClock::time_point CPUClock::now ( )

staticnoexcept

Return the amount of CPU time that the current process has used. Unfortunately, this requires platform-specific calls, so this function returns 0 on platforms that are neither Windows nor POSIX.

Definition at line 110 of file timer.cc.

Member Data Documentation

is_steady

const bool CPUClock::is_steady = true

static

Boolean indicating that the clock monotonically increases.

Definition at line 63 of file timer.h.

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

• include/deal.II/base/timer.h
• source/base/timer.cc