/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. 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 <errno.h> #include <pthread.h> #include <stdio.h> #include <time.h> #include <unistd.h> #include <sys/time.h> #ifndef TYPE # define TYPE PTHREAD_MUTEX_NORMAL #endif static int do_test (void) { pthread_mutex_t m; struct timespec ts; struct timeval tv; struct timeval tv2; int err; pthread_mutexattr_t a; if (pthread_mutexattr_init (&a) != 0) { puts ("mutexattr_init failed"); return 1; } if (pthread_mutexattr_settype (&a, TYPE) != 0) { puts ("mutexattr_settype failed"); return 1; } if (pthread_mutex_init (&m, &a) != 0) { puts ("mutex_init failed"); return 1; } if (pthread_mutexattr_destroy (&a) != 0) { puts ("mutexattr_destroy failed"); return 1; } if (pthread_mutex_lock (&m) != 0) { puts ("mutex_lock failed"); return 1; } if (pthread_mutex_trylock (&m) == 0) { puts ("mutex_trylock succeeded"); return 1; } gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_sec += 2; /* Wait 2 seconds. */ err = pthread_mutex_timedlock (&m, &ts); if (err == 0) { puts ("timedlock succeeded"); return 1; } else if (err != ETIMEDOUT) { printf ("timedlock error != ETIMEDOUT: %d\n", err); return 1; } else { int clk_tck = sysconf (_SC_CLK_TCK); gettimeofday (&tv2, NULL); tv2.tv_sec -= tv.tv_sec; tv2.tv_usec -= tv.tv_usec; if (tv2.tv_usec < 0) { tv2.tv_usec += 1000000; tv2.tv_sec -= 1; } /* Be a bit tolerant, add one CLK_TCK. */ tv2.tv_usec += 1000000 / clk_tck; if (tv2.tv_usec >= 1000000) { tv2.tv_usec -= 1000000; ++tv2.tv_sec; } if (tv2.tv_sec < 2) { printf ("premature timeout: %ld.%06ld difference\n", tv2.tv_sec, tv2.tv_usec); return 1; } } (void) gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_sec += 2; /* Wait 2 seconds. */ /* The following makes the ts value invalid. */ ts.tv_nsec += 1000000000; err = pthread_mutex_timedlock (&m, &ts); if (err == 0) { puts ("2nd timedlock succeeded"); return 1; } else if (err != EINVAL) { printf ("2nd timedlock error != EINVAL: %d\n", err); return 1; } if (pthread_mutex_unlock (&m) != 0) { puts ("mutex_unlock failed"); return 1; } (void) gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_sec += 2; /* Wait 2 seconds. */ if (pthread_mutex_timedlock (&m, &ts) != 0) { puts ("3rd timedlock failed"); } (void) gettimeofday (&tv2, NULL); /* Check that timedlock didn't delay. We use a limit of 0.1 secs. */ timersub (&tv2, &tv, &tv2); if (tv2.tv_sec > 0 || tv2.tv_usec > 100000) { puts ("3rd timedlock didn't return right away"); return 1; } if (pthread_mutex_unlock (&m) != 0) { puts ("final mutex_unlock failed"); return 1; } if (pthread_mutex_destroy (&m) != 0) { puts ("mutex_destroy failed"); return 1; } return 0; } #define TIMEOUT 4 #define TEST_FUNCTION do_test () #include "../test-skeleton.c"