/* Copyright (C) 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. 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 <stdlib.h> #include <time.h> #include <sys/time.h> static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP; static pthread_barrier_t bar; static void ch (void *arg) { int e = pthread_mutex_lock (&mut); if (e == 0) { puts ("mutex not locked at all by cond_wait"); exit (1); } if (e != EDEADLK) { puts ("no deadlock error signaled"); exit (1); } if (pthread_mutex_unlock (&mut) != 0) { puts ("ch: cannot unlock mutex"); exit (1); } puts ("ch done"); } static void * tf1 (void *p) { int err; if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0 || pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0) { puts ("cannot set cancellation options"); exit (1); } err = pthread_mutex_lock (&mut); if (err != 0) { puts ("child: cannot get mutex"); exit (1); } err = pthread_barrier_wait (&bar); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { printf ("barrier_wait returned %d\n", err); exit (1); } puts ("child: got mutex; waiting"); pthread_cleanup_push (ch, NULL); pthread_cond_wait (&cond, &mut); pthread_cleanup_pop (0); puts ("child: cond_wait should not have returned"); return NULL; } static void * tf2 (void *p) { int err; if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0 || pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0) { puts ("cannot set cancellation options"); exit (1); } err = pthread_mutex_lock (&mut); if (err != 0) { puts ("child: cannot get mutex"); exit (1); } err = pthread_barrier_wait (&bar); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { printf ("barrier_wait returned %d\n", err); exit (1); } puts ("child: got mutex; waiting"); pthread_cleanup_push (ch, NULL); /* Current time. */ struct timeval tv; (void) gettimeofday (&tv, NULL); /* +1000 seconds in correct format. */ struct timespec ts; TIMEVAL_TO_TIMESPEC (&tv, &ts); ts.tv_sec += 1000; pthread_cond_timedwait (&cond, &mut, &ts); pthread_cleanup_pop (0); puts ("child: cond_wait should not have returned"); return NULL; } static int do_test (void) { pthread_t th; int err; printf ("&cond = %p\n&mut = %p\n", &cond, &mut); puts ("parent: get mutex"); err = pthread_barrier_init (&bar, NULL, 2); if (err != 0) { puts ("parent: cannot init barrier"); exit (1); } puts ("parent: create child"); err = pthread_create (&th, NULL, tf1, NULL); if (err != 0) { puts ("parent: cannot create thread"); exit (1); } puts ("parent: wait for child to lock mutex"); err = pthread_barrier_wait (&bar); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: cannot wait for barrier"); exit (1); } err = pthread_mutex_lock (&mut); if (err != 0) { puts ("parent: mutex_lock failed"); exit (1); } err = pthread_mutex_unlock (&mut); if (err != 0) { puts ("parent: mutex_unlock failed"); exit (1); } if (pthread_cancel (th) != 0) { puts ("cannot cancel thread"); exit (1); } void *r; err = pthread_join (th, &r); if (err != 0) { puts ("parent: failed to join"); exit (1); } if (r != PTHREAD_CANCELED) { puts ("child hasn't been canceled"); exit (1); } puts ("parent: create 2nd child"); err = pthread_create (&th, NULL, tf2, NULL); if (err != 0) { puts ("parent: cannot create thread"); exit (1); } puts ("parent: wait for child to lock mutex"); err = pthread_barrier_wait (&bar); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: cannot wait for barrier"); exit (1); } err = pthread_mutex_lock (&mut); if (err != 0) { puts ("parent: mutex_lock failed"); exit (1); } err = pthread_mutex_unlock (&mut); if (err != 0) { puts ("parent: mutex_unlock failed"); exit (1); } if (pthread_cancel (th) != 0) { puts ("cannot cancel thread"); exit (1); } err = pthread_join (th, &r); if (err != 0) { puts ("parent: failed to join"); exit (1); } if (r != PTHREAD_CANCELED) { puts ("child hasn't been canceled"); exit (1); } puts ("done"); return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"