fft-benchmark/timer.c

#include <stdlib.h>
#include "timer.h"

struct _Timer {
    struct timeval start;
    struct timeval end;
};


Timer *
timer_new (void)
{
    Timer *t = (Timer *) malloc (sizeof (Timer));
    return t;
}

void
timer_destroy (Timer *t)
{
    free (t);
}

void
timer_start (Timer *t)
{
    gettimeofday (&t->start, NULL);
}

void
timer_stop (Timer *t)
{
    gettimeofday (&t->end, NULL);
}

double
timer_get_seconds (Timer *t)
{
    long seconds = t->end.tv_sec - t->start.tv_sec;
    long useconds = t->end.tv_usec - t->start.tv_usec;
    return seconds + useconds / 1000.0 / 1000.0;
}