realtime.c File Reference

#include <stdio.h>
#include "machine.h"
#include "realtime.h"
#include <sys/time.h>
#include <unistd.h>

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Defines
#define	inline
Functions
static unsigned long long	TIME2ULL (struct timeval t)
static struct timeval	ULL2TIME (unsigned long long t)
int C2F()	realtimeinit (double *t, double *scale)
int C2F()	realtime (double *t)
Variables
static double	simulation_start = 0
static double	simulation_scale = 0
static unsigned long long	realtime_start = 0
static int	simulation_doinit = 1

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Define Documentation

#define inline

Definition at line 14 of file realtime.c.

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Function Documentation

int C2F() realtime

(

double *

t

)

Definition at line 69 of file realtime.c.

References long, realtime_start, simulation_doinit, simulation_scale, simulation_start, t, TIME2ULL(), and ULL2TIME().

{
  struct timeval now;
  unsigned long long realtime_diff;
  double simulation_diff;
  long long delay;

  if (simulation_doinit) {
    simulation_doinit = 0;
    simulation_start = *t;
  }
  gettimeofday(&now, 0); 
  realtime_diff = TIME2ULL(now) - realtime_start;
  simulation_diff = (*t - simulation_start) * simulation_scale;
  delay = (long long)(simulation_diff * 1000000) - realtime_diff;

  if (delay > 0) 
        {
    struct timeval d ;
    d = ULL2TIME(delay);
    select(0, 0, 0, 0, &d);
  }
  return 0;
}

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int C2F() realtimeinit	(	double *	t,
		double *	scale
	)

Definition at line 56 of file realtime.c.

References realtime_start, scale, simulation_doinit, simulation_scale, and TIME2ULL().

{
  struct timeval now;
  
  gettimeofday(&now, 0); 
  realtime_start = TIME2ULL(now);
  simulation_doinit = 1;
  simulation_scale = *scale;
  return 0;
}

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static unsigned long long TIME2ULL

(

struct timeval

t

)

[inline, static]

Definition at line 37 of file realtime.c.

References long, and result.

Referenced by realtime(), and realtimeinit().

{
  unsigned long long result;
  result = (unsigned long long)t.tv_sec * 1000000 + t.tv_usec;
  return result;
}

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static struct timeval ULL2TIME

(

unsigned long long

t

)

[inline, static]

Definition at line 46 of file realtime.c.

References result, and t.

Referenced by realtime().

{
  struct timeval result;
  result.tv_sec = t / 1000000;
  result.tv_usec = t % 1000000;
  return result;
}

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Variable Documentation

unsigned long long realtime_start = 0 [static]

Definition at line 31 of file realtime.c.

Referenced by realtime(), and realtimeinit().

int simulation_doinit = 1 [static]

Definition at line 32 of file realtime.c.

Referenced by realtime(), and realtimeinit().

double simulation_scale = 0 [static]

Definition at line 30 of file realtime.c.

Referenced by realtime(), and realtimeinit().

double simulation_start = 0 [static]

Definition at line 29 of file realtime.c.

Referenced by realtime().

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