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9502fdee8b
* tests/test-times.c (tms2ms): New function. (main): Use it to simplify printing and avoid need for casts. Pacify -Wuseless-cast via compound literals.
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Test of times function.
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Copyright (C) 2008-2026 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Simon Josefsson <simon@josefsson.org>, 2008. */
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#include <config.h>
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#include <sys/times.h>
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#include "signature.h"
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SIGNATURE_CHECK (times, clock_t, (struct tms *));
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <math.h>
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static int
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doublecmp (const void *p, const void *q)
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{
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double a = *(double *) p;
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double b = *(double *) q;
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return a < b ? -1 : a > b ? 1 : 0;
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}
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static long int
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tms2ms (long int tms, clock_t clk_tck)
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{
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return tms * 1000 / clk_tck;
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}
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int
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main (int argc, char *argv[])
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{
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struct tms tms;
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clock_t t;
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#ifndef _SC_CLK_TCK
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clock_t clk_tck = CLK_TCK;
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#else
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clock_t clk_tck = sysconf (_SC_CLK_TCK);
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#endif
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t = times (&tms);
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if (t == (clock_t) -1)
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{
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perror ("times");
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return EXIT_FAILURE;
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}
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if (argc > 1)
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{
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printf ("clk_tck %ld\n", (long int) {clk_tck});
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printf ("t %ld\n", (long int) {t});
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printf ("tms.tms_utime %ldms\n", tms2ms (tms.tms_utime, clk_tck));
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printf ("tms.tms_stime %ldms\n", tms2ms (tms.tms_stime, clk_tck));
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printf ("tms.tms_cutime %ldms\n", tms2ms (tms.tms_cutime, clk_tck));
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printf ("tms.tms_cstime %ldms\n", tms2ms (tms.tms_cstime, clk_tck));
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}
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if (argc > 1)
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{
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size_t size = atoi (argv[1]);
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double *base;
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base = malloc (size * sizeof (double));
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for (size_t i = 0; i < size; i++)
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base[i] = i * i;
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qsort (base, size, sizeof (double), doublecmp);
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free (base);
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}
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t = times (&tms);
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if (t == (clock_t) -1)
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{
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perror ("times");
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return EXIT_FAILURE;
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}
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if (argc > 1)
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{
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printf ("clk_tck %ld\n", (long int) {clk_tck});
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printf ("t %ld\n", (long int) {t});
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printf ("tms.tms_utime %ldms\n", tms2ms (tms.tms_utime, clk_tck));
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printf ("tms.tms_stime %ldms\n", tms2ms (tms.tms_stime, clk_tck));
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printf ("tms.tms_cutime %ldms\n", tms2ms (tms.tms_cutime, clk_tck));
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printf ("tms.tms_cstime %ldms\n", tms2ms (tms.tms_cstime, clk_tck));
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}
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return 0;
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}
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