RegSelTimer.cxx File Reference

#include <stdlib.h>
#include <pthread.h>
#include "RegSelLUT/RegSelTimer.h"

Include dependency graph for RegSelTimer.cxx:

Go to the source code of this file.

Classes
struct	__gtttimer

Macros
#define	_timersub   Timersub

Functions
int	Timersub (struct timeval *, struct timeval *, struct timeval *)
void	__free_timer (void *t)
	destructor
void	__gtt_gettime (struct timeval *t)
	initialiser
struct timeval	gtttimer_start (void)
	significantly (0.02ms) faster and simpler timer start/stop functions
double	gttd (struct timeval time)
double	gtttimer_stop (struct timeval start_time)

Macro Definition Documentation

_timersub

#define _timersub   Timersub

Definition at line 40 of file RegSelTimer.cxx.

Function Documentation

__free_timer()

void __free_timer

(

void *

t

)

destructor

Definition at line 48 of file RegSelTimer.cxx.

{  if ( t!=nullptr ) free((__gtttimer*)t); }

__gtt_gettime()

void __gtt_gettime

(

struct timeval *

t

)

initialiser

initialise the gtttimer thread specific key get the time, (probably needlessly) mutex protected call to gettimeofday

Definition at line 70 of file RegSelTimer.cxx.

{
  //  pthread_mutex_lock(&time_lock);
  gettimeofday (t, nullptr);            
  //  pthread_mutex_unlock(&time_lock);
}

gttd()

double gttd

(

struct timeval

time

)

Definition at line 126 of file RegSelTimer.cxx.

{ return (time.tv_sec*1000.0) + (time.tv_usec/1000.0); }

gtttimer_start()

struct timeval gtttimer_start

(

void

)

significantly (0.02ms) faster and simpler timer start/stop functions

Definition at line 118 of file RegSelTimer.cxx.

{
  struct timeval start_time;
  __gtt_gettime (&start_time);
  return start_time;
}

gtttimer_stop()

double gtttimer_stop

(

struct timeval

start_time

)

Definition at line 128 of file RegSelTimer.cxx.

{
  double time = 0;
  struct timeval stop_time;
  struct timeval diff_time;
  //  double diff;
 
  __gtt_gettime (&stop_time);
  //  pthread_mutex_lock(&time_lock);
  _timersub( &stop_time, &start_time, &diff_time );
  //  printf("diff: %d\n", _timersub( &stop_time, &start_time, &diff_time ) );
  //  diff = gttd(stop_time)-gttd(start_time);
  //  printf("timer:   %12.5f %12.5f  %12.5f   %12.5f\n", gttd(stop_time), gttd(start_time), gttd(diff_time), diff ); 
  //  pthread_mutex_unlock(&time_lock);  
  time = (diff_time.tv_sec*1000.0) + (diff_time.tv_usec/1000.0);
  return time;
}

Timersub()

int Timersub	(	struct timeval *	stop_time,
		struct timeval *	start_time,
		struct timeval *	diff_time )

Definition at line 147 of file RegSelTimer.cxx.

{  
  diff_time->tv_sec  = stop_time->tv_sec  - start_time->tv_sec;
  diff_time->tv_usec = stop_time->tv_usec - start_time->tv_usec;
  return 0;
}