125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/* Test program for POSIX clock_* functions.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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/* We want to see output immediately. */
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#define STDOUT_UNBUFFERED
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/* We expect to run at least 10 seconds. */
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#define TIMEOUT 15
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static int
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clock_test (clockid_t cl)
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{
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struct timespec old_ts;
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struct timespec ts;
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struct timespec waitit;
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int result = 0;
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int i;
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memset (&ts, '\0', sizeof ts);
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waitit.tv_sec = 0;
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waitit.tv_nsec = 500000000;
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/* Get and print resolution of the clock. */
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if (clock_getres (cl, &ts) == 0)
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{
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if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
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{
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printf ("clock %d: nanosecond value of resolution wrong\n", cl);
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result = 1;
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}
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else
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printf ("clock %d: resolution = %ld.%09ld secs\n",
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cl, ts.tv_sec, ts.tv_nsec);
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}
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else
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{
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printf ("clock %d: cannot get resolution\n", cl);
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result = 1;
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}
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memset (&ts, '\0', sizeof ts);
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memset (&old_ts, '\0', sizeof old_ts);
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/* Next get the current time value a few times. */
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for (i = 0; i < 10; ++i)
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{
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if (clock_gettime (cl, &ts) == 0)
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{
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if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
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{
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printf ("clock %d: nanosecond value of time wrong (try %d)\n",
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cl, i);
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result = 1;
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}
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else
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{
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printf ("clock %d: time = %ld.%09ld secs\n",
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cl, ts.tv_sec, ts.tv_nsec);
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if (memcmp (&ts, &old_ts, sizeof ts) == 0)
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{
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printf ("clock %d: time hasn't changed (try %d)\n", cl, i);
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result = 1;
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old_ts = ts;
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}
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}
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}
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else
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{
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printf ("clock %d: cannot get time (try %d)\n", cl, i);
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result = 1;
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}
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/* Wait a bit before the next iteration. */
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nanosleep (&waitit, NULL);
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}
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return result;
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}
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static int
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do_test (void)
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{
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clockid_t cl;
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int result;
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result = clock_test (CLOCK_REALTIME);
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if (clock_getcpuclockid (0, &cl) == 0)
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/* XXX It's not yet a bug when this fails. */
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clock_test (cl);
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else
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printf("CPU clock unavailble, skipping test\n");
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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