diff options
Diffstat (limited to 'gnulib/tests/test-times.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-times.c | 105 |
2 files changed, 105 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/tests/test-times.c b/gnulib/tests/test-times.c new file mode 100644 index 00000000..dcdcdb46 --- /dev/null +++ b/gnulib/tests/test-times.c @@ -0,0 +1,105 @@ +/* Test of times function. + Copyright (C) 2008, 2009, 2010 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", t); + printf ("tms.tms_utime %ldms\n", (tms.tms_utime * 1000) / clk_tck); + printf ("tms.tms_stime %ldms\n", (tms.tms_stime * 1000) / clk_tck); + printf ("tms.tms_cutime %ldms\n", (tms.tms_cutime * 1000) / clk_tck); + printf ("tms.tms_cstime %ldms\n", (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", t); + printf ("tms.tms_utime %ldms\n", (tms.tms_utime * 1000) / clk_tck); + printf ("tms.tms_stime %ldms\n", (tms.tms_stime * 1000) / clk_tck); + printf ("tms.tms_cutime %ldms\n", (tms.tms_cutime * 1000) / clk_tck); + printf ("tms.tms_cstime %ldms\n", (tms.tms_cstime * 1000) / clk_tck); + } + + return 0; +} |