time_normalizer Struct Reference

#include <pfs_timer.h>

Public Member Functions
ulonglong	wait_to_pico (ulonglong wait)
ulonglong	time_to_pico (ulonglong t)
void	to_pico (ulonglong start, ulonglong end, ulonglong *pico_start, ulonglong *pico_end, ulonglong *pico_wait)

Static Public Member Functions
static time_normalizer *	get (enum_timer_name timer_name)

Public Attributes
ulonglong	m_v0
ulonglong	m_factor

Detailed Description

A time normalizer. A time normalizer consist of a transformation that converts raw timer values (expressed in the timer unit) to normalized values, expressed in picoseconds.

Definition at line 35 of file pfs_timer.h.

Member Function Documentation

time_normalizer * time_normalizer::get ( enum_timer_name  timer_name )

static

Get a time normalizer for a given timer.

Parameters

timer_name

the timer name

Returns

the normalizer for the timer

Definition at line 265 of file pfs_timer.cc.

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ulonglong time_normalizer::time_to_pico ( ulonglong  t )

inline

Convert a time from timer units to pico seconds.

Parameters

t	a time, expressed in timer units

Returns

the time, expressed in pico seconds

Definition at line 64 of file pfs_timer.h.

void time_normalizer::to_pico	(	ulonglong	start,
		ulonglong	end,
		ulonglong *	pico_start,
		ulonglong *	pico_end,
		ulonglong *	pico_wait
	)

Convert start / end times from timer units to pico seconds.

Parameters

	start	start time, expressed in timer units
	end	end time, expressed in timer units
[out]	pico_start	start time, expressed in pico seconds
[out]	pico_end	end time, expressed in pico seconds
[out]	pico_wait	wait time, expressed in pico seconds

Definition at line 275 of file pfs_timer.cc.

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ulonglong time_normalizer::wait_to_pico ( ulonglong  wait )

inline

Convert a wait from timer units to pico seconds.

Parameters

wait	a wait, expressed in timer units

Returns

the wait, expressed in pico seconds

Definition at line 54 of file pfs_timer.h.

Member Data Documentation

ulonglong time_normalizer::m_factor

Conversion factor from timer values to pico seconds.

Definition at line 47 of file pfs_timer.h.

ulonglong time_normalizer::m_v0

Timer value at server statup.

Definition at line 45 of file pfs_timer.h.

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

• storage/perfschema/pfs_timer.h
• storage/perfschema/pfs_timer.cc