tim::component::system_clock Struct Reference

this component extracts only the CPU time spent in kernel-mode. Only relevant as a time when a different is computed Do not use a single CPU time as an amount of time; it doesn't work that way. More...

#include "timemory/components/timing/components.hpp"

Collaboration diagram for tim::component::system_clock:

Public Types
using	ratio_t = std::nano
using	value_type = int64_t
using	base_type = base< system_clock, value_type >

Public Member Functions
double	get () const noexcept
double	get_display () const noexcept
void	start () noexcept
void	stop () noexcept

Static Public Member Functions
static std::string	label ()
static std::string	description ()
static value_type	record () noexcept

Detailed Description

this component extracts only the CPU time spent in kernel-mode. Only relevant as a time when a different is computed Do not use a single CPU time as an amount of time; it doesn't work that way.

Definition at line 46 of file components.hpp.

Member Typedef Documentation

base_type

using tim::component::system_clock::base_type = base<system_clock, value_type>

Definition at line 50 of file components.hpp.

ratio_t

using tim::component::system_clock::ratio_t = std::nano

Definition at line 48 of file components.hpp.

value_type

using tim::component::system_clock::value_type = int64_t

Definition at line 49 of file components.hpp.

Member Function Documentation

description()

static std::string tim::component::system_clock::description ( )

inlinestatic

Definition at line 53 of file components.hpp.

{ return "CPU time spent in kernel-mode"; }

get()

double tim::component::system_clock::get ( ) const

inlinenoexcept

Definition at line 58 of file components.hpp.

    {
        auto val = load();
        return static_cast<double>(val / static_cast<double>(ratio_t::den) *
                                   base_type::get_unit());
    }

References tim::component::base< Tp, Value >::get_unit(), and tim::component::base< system_clock >::load().

Referenced by get_display().

get_display()

double tim::component::system_clock::get_display ( ) const

inlinenoexcept

Definition at line 64 of file components.hpp.

{ return get(); }

References get().

label()

static std::string tim::component::system_clock::label ( )

inlinestatic

Definition at line 52 of file components.hpp.

{ return "sys"; }

record()

static value_type tim::component::system_clock::record ( )

inlinestaticnoexcept

Definition at line 54 of file components.hpp.

    {
        return tim::get_clock_system_now<int64_t, ratio_t>();
    }

Referenced by start(), and stop().

start()

void tim::component::system_clock::start ( )

inlinenoexcept

Definition at line 65 of file components.hpp.

{ value = record(); }

References record().

stop()

void tim::component::system_clock::stop ( )

inlinenoexcept

Definition at line 66 of file components.hpp.

    {
        value = (record() - value);
        accum += value;
    }

References record().

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

• timemory/components/timing/components.hpp