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/* Test of times function.
Copyright (C) 2008-2012 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Simon Josefsson <simon@josefsson.org>, 2008. */
#include <config.h>
#include <sys/times.h>
#include "signature.h"
SIGNATURE_CHECK (times, clock_t, (struct tms *));
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <math.h>
static int
doublecmp (const void *p, const void *q)
{
double a = *(double *) p;
double b = *(double *) q;
return a < b;
}
int
main (int argc, char *argv[])
{
struct tms tms;
clock_t t;
#ifndef _SC_CLK_TCK
clock_t clk_tck = CLK_TCK;
#else
clock_t clk_tck = sysconf (_SC_CLK_TCK);
#endif
t = times (&tms);
if (t == (clock_t) -1)
{
perror ("times");
return EXIT_FAILURE;
}
if (argc > 1)
{
printf ("clk_tck %ld\n", (long int) clk_tck);
printf ("t %ld\n", (long int) t);
printf ("tms.tms_utime %ldms\n", ((long int) tms.tms_utime * 1000) / clk_tck);
printf ("tms.tms_stime %ldms\n", ((long int) tms.tms_stime * 1000) / clk_tck);
printf ("tms.tms_cutime %ldms\n", ((long int) tms.tms_cutime * 1000) / clk_tck);
printf ("tms.tms_cstime %ldms\n", ((long int) tms.tms_cstime * 1000) / clk_tck);
}
if (argc > 1)
{
size_t size = atoi (argv[1]);
double *base;
size_t i;
base = malloc (size * sizeof (double));
for (i = 0; i < size; i++)
base[i] = i * i;
qsort (base, size, sizeof (double), doublecmp);
free (base);
}
t = times (&tms);
if (t == (clock_t) -1)
{
perror ("times");
return EXIT_FAILURE;
}
if (argc > 1)
{
printf ("clk_tck %ld\n", (long int) clk_tck);
printf ("t %ld\n", (long int) t);
printf ("tms.tms_utime %ldms\n", ((long int) tms.tms_utime * 1000) / clk_tck);
printf ("tms.tms_stime %ldms\n", ((long int) tms.tms_stime * 1000) / clk_tck);
printf ("tms.tms_cutime %ldms\n", ((long int) tms.tms_cutime * 1000) / clk_tck);
printf ("tms.tms_cstime %ldms\n", ((long int) tms.tms_cstime * 1000) / clk_tck);
}
return 0;
}
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