For measuring time elapsed. More...

#include <ut0ut.h>

Public Types
using	SC = std::chrono::steady_clock

Public Member Functions
	Timer () noexcept
	Constructor. More...

void	reset ()
	Reset the timer to the current time. More...

template<typename T = std::chrono::milliseconds>
int64_t	elapsed () const noexcept

Private Attributes
SC::time_point	m_start
	High resolution timer instance used for timimg. More...

Friends
template<typename T , typename Traits >
std::basic_ostream< T, Traits > &	operator<< (std::basic_ostream< T, Traits > &out, const Timer &timer) noexcept
	Print time elapsed since last reset (in milliseconds) to the stream. More...

Detailed Description

For measuring time elapsed.

Since std::chrono::high_resolution_clock may be influenced by a change in system time, it might not be steady. So we use std::chrono::steady_clock for elapsed time.

Member Typedef Documentation

◆ SC

using ib::Timer::SC = std::chrono::steady_clock

Constructor & Destructor Documentation

◆ Timer()

ib::Timer::Timer ( )

inlinenoexcept

Constructor.

Starts/resets the timer to the current time.

Member Function Documentation

◆ elapsed()

template<typename T = std::chrono::milliseconds>

int64_t ib::Timer::elapsed ( ) const

inlinenoexcept

Returns: the time elapsed in milliseconds.

◆ reset()

void ib::Timer::reset ( void )

inline

Reset the timer to the current time.

Friends And Related Function Documentation

◆ operator<<

template<typename T , typename Traits >

std::basic_ostream< T, Traits > & operator<<	(	std::basic_ostream< T, Traits > &	out,
		const Timer &	timer
	)

friend

Print time elapsed since last reset (in milliseconds) to the stream.

Parameters

[in,out]	out	Stream to write to.
[in]	timer	Timer to write to the stream.

Returns: stream instance that was passed in.

Member Data Documentation

◆ m_start

SC::time_point ib::Timer::m_start

private

High resolution timer instance used for timimg.

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

storage/innobase/include/ut0ut.h

Public Types

Public Member Functions

Private Attributes

Friends