/* Copyright (C) 2002-2015 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 <stdlib.h> #include <stdio.h> #include <string.h> #include <sys/time.h> static int kind[] = { PTHREAD_RWLOCK_PREFER_READER_NP, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, PTHREAD_RWLOCK_PREFER_WRITER_NP, }; static void * tf (void *arg) { pthread_rwlock_t *r = arg; /* Timeout: 0.3 secs. */ struct timeval tv; (void) gettimeofday (&tv, NULL); struct timespec ts; TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_nsec += 300000000; if (ts.tv_nsec >= 1000000000) { ts.tv_nsec -= 1000000000; ++ts.tv_sec; } puts ("child calling timedrdlock"); int err = pthread_rwlock_timedrdlock (r, &ts); if (err == 0) { puts ("rwlock_timedrdlock returned"); pthread_exit ((void *) 1l); } if (err != ETIMEDOUT) { printf ("err = %s (%d), expected %s (%d)\n", strerror (err), err, strerror (ETIMEDOUT), ETIMEDOUT); pthread_exit ((void *) 1l); } puts ("1st child timedrdlock done"); struct timeval tv2; (void) gettimeofday (&tv2, NULL); timersub (&tv2, &tv, &tv); if (tv.tv_usec < 200000) { puts ("timeout too short"); pthread_exit ((void *) 1l); } (void) gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_sec += 10; /* Note that the following operation makes ts invalid. */ ts.tv_nsec += 1000000000; err = pthread_rwlock_timedrdlock (r, &ts); if (err == 0) { puts ("2nd timedrdlock succeeded"); pthread_exit ((void *) 1l); } if (err != EINVAL) { puts ("2nd timedrdlock did not return EINVAL"); pthread_exit ((void *) 1l); } puts ("2nd child timedrdlock done"); return NULL; } static int do_test (void) { size_t cnt; for (cnt = 0; cnt < sizeof (kind) / sizeof (kind[0]); ++cnt) { pthread_rwlock_t r; pthread_rwlockattr_t a; if (pthread_rwlockattr_init (&a) != 0) { printf ("round %Zu: rwlockattr_t failed\n", cnt); exit (1); } if (pthread_rwlockattr_setkind_np (&a, kind[cnt]) != 0) { printf ("round %Zu: rwlockattr_setkind failed\n", cnt); exit (1); } if (pthread_rwlock_init (&r, &a) != 0) { printf ("round %Zu: rwlock_init failed\n", cnt); exit (1); } if (pthread_rwlockattr_destroy (&a) != 0) { printf ("round %Zu: rwlockattr_destroy failed\n", cnt); exit (1); } struct timeval tv; (void) gettimeofday (&tv, NULL); struct timespec ts; TIMEVAL_TO_TIMESPEC (&tv, &ts); ++ts.tv_sec; /* Get a write lock. */ int e = pthread_rwlock_timedwrlock (&r, &ts); if (e != 0) { printf ("round %Zu: rwlock_timedwrlock failed (%d)\n", cnt, e); exit (1); } puts ("1st timedwrlock done"); (void) gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ++ts.tv_sec; e = pthread_rwlock_timedrdlock (&r, &ts); if (e == 0) { puts ("timedrdlock succeeded"); exit (1); } if (e != EDEADLK) { puts ("timedrdlock did not return EDEADLK"); exit (1); } puts ("1st timedrdlock done"); (void) gettimeofday (&tv, NULL); TIMEVAL_TO_TIMESPEC (&tv, &ts); ++ts.tv_sec; e = pthread_rwlock_timedwrlock (&r, &ts); if (e == 0) { puts ("2nd timedwrlock succeeded"); exit (1); } if (e != EDEADLK) { puts ("2nd timedwrlock did not return EDEADLK"); exit (1); } puts ("2nd timedwrlock done"); pthread_t th; if (pthread_create (&th, NULL, tf, &r) != 0) { printf ("round %Zu: create failed\n", cnt); exit (1); } puts ("started thread"); void *status; if (pthread_join (th, &status) != 0) { printf ("round %Zu: join failed\n", cnt); exit (1); } if (status != NULL) { printf ("failure in round %Zu\n", cnt); exit (1); } puts ("joined thread"); if (pthread_rwlock_destroy (&r) != 0) { printf ("round %Zu: rwlock_destroy failed\n", cnt); exit (1); } } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"