PTS.c.lx-xxx-xxx File Reference

Implements the LINUX version of the PTS routines. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <PBS/PTS.h>

Classes
struct	_PTS_parameters
	Defines the parameters needed to determine the processor clock speed and to convert this speed to nanoseconds. More...
Typedefs
typedef struct _PTS_parameters	PTS_parameters
	Typedef for struct _PTS_parameters.
Functions
int	PTS_initialize (void)
	Initializes the PTS facility.
unsigned int	PTS_nsecs_to_ptus (unsigned int nanoseconds)
	Convert a number of nanoseconds to PTUs.
unsigned long long int	PTS_nsecx_to_ptux (unsigned long long int nanoseconds)
unsigned int	PTS_ptus_to_nsecs (unsigned int ptus)
	Convert a number of ptus to nanoseconds.
unsigned long long int	PTS_ptux_to_nsecx (unsigned long long int ptus)
unsigned int	PTS_frequency (void)
	Get the frequency of the PTS clock.
Variables
static PTS_parameters	PTS_Parameters = {0.0, 0.0}
	Local storage for the PTS parameters.

---

Detailed Description

Implements the LINUX version of the PTS routines.

Author:

JJRussell - russell@slac.stanford.edu

    CVS $Id: PTS.c.lx-xxx-xxx,v 1.6 2011/03/24 23:05:47 apw Exp $

---

Function Documentation

unsigned int PTS_frequency

(

void

)

Get the frequency of the PTS clock.

Returns:

The frequency, in Hertz, to the processor clock

References _PTS_parameters::frequency.

Referenced by PBS_initialize2(), and WUT_frequency().

int 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.

References _PTS_parameters::frequency, and _PTS_parameters::nsecs_per_ptu.

Referenced by PBS_initialize2().

unsigned int PTS_nsecs_to_ptus

(

unsigned 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

References _PTS_parameters::frequency.

unsigned int PTS_ptus_to_nsecs

(

unsigned 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

References _PTS_parameters::nsecs_per_ptu.