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PTS.h File Reference

Processor Timer Services. More...

Functions
void	PTS_initialize (void)
	Initializes the PTS facility. More...
int	PTS_nsecs_to_ptus (int nanoseconds)
	Convert a number of nanoseconds to PTUs. More...
int	PTS_ptus_to_nsecs (int ptus)
	Convert a number of ptus to nanoseconds. More...
int	PTS_frequency (void)
	Get the frequency of the PTS clock. More...

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Detailed Description

Processor Timer Services.

Author:

JJRussell - russell@slac.stanford.edu

These utilities allow one to deal with the highest resolution clock available on the target platform. The utilities which deal with the clock all take times in the units of the processor clock. These routines allow one to convert these units to and from physical units.

Nanoseconds has been chosen as the physical unit to deal in. The only limitation that this imposes is on the range, limiting these times, at least in 32 bit representations to the 2-4 second range.

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Function Documentation

int PTS_frequency (  void    )

Get the frequency of the PTS clock. Returns: The frequency, in Hertz, to the processor clock

void PTS_initialize (  void    )

Initializes the PTS facility. This is a one time only call to initialize internal data structures. This routine should be called as part of the library initialization sequence.

int PTS_nsecs_to_ptus (  int    nanoseconds )

Convert a number of nanoseconds to PTUs. Parameters: nanoseconds  The number of nanoseconds to convert to PTUs Returns: The number of equivalent PTUs

int PTS_ptus_to_nsecs (  int    ptus )

Convert a number of ptus to nanoseconds. Parameters: ptus  The number of PTUs to convert to nanoseconds Returns: The number of equivalent PTUs

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