fe::SystemTicker Class Reference

High precision timer. More...

#include <SystemTicker.h>

Public Member Functions
	SystemTicker (const char *name)
	SystemTicker (const char *group, const char *name)
unsigned long	timeMS (void)
	Returns a time in milliseconds from an arbitrary fixed reference point. More...
void	log (const char *fmt,...)
void	log (void)

Static Public Member Functions
static void FE_CDECL	calibrate (void)
	Perform a self-contained recalibration. More...
static unsigned long	ticksPerMS (void)
	Returns the approximate number of processor clock ticks that occur every millisecond. More...
static unsigned long	tickDifference (unsigned long start, unsigned long finish)
	Return the reltive tick change between two absolute tick values. More...
static float	microsecondsPerTick ()
	Returns the fractional number of microseonds for each processor clock tick. More...

Static Private Member Functions
static void	staticInit (void)

Private Attributes
unsigned long	m_lastincl
unsigned long	m_lastexcl
String	m_name
String	m_group
unsigned long	m_lasttick
struct timeval	m_timer

Static Private Attributes
static unsigned long	ms_ticksPerMS = 1
static float	ms_usPerTick = 1

Detailed Description

High precision timer.

Member Function Documentation

calibrate()

static void FE_CDECL fe::SystemTicker::calibrate ( void  )

inlinestatic

Perform a self-contained recalibration.

Must be performed at least once before TicksPerMS can be considered useful.

microsecondsPerTick()

static float fe::SystemTicker::microsecondsPerTick ( )

inlinestatic

Returns the fractional number of microseonds for each processor clock tick.

Referenced by fe::systemMicroseconds().

tickDifference()

static unsigned long fe::SystemTicker::tickDifference ( unsigned long  start, unsigned long  finish  )

inlinestatic

Return the reltive tick change between two absolute tick values.

Rollover is corrected.

ticksPerMS()

static unsigned long fe::SystemTicker::ticksPerMS ( void  )

inlinestatic

Returns the approximate number of processor clock ticks that occur every millisecond.

timeMS()

unsigned long fe::SystemTicker::timeMS

(

void

)

Returns a time in milliseconds from an arbitrary fixed reference point.

This number can loop.

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

• SystemTicker.h
• SystemTicker.cc