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