/* Copyright (C) 2002 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 <pthread.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> /* Note that this test requires more than the standard. It is required that there are no spurious wakeups if only more readers are added. This is a reasonable demand. */ static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; #define N 10 static void * tf (void *arg) { int i = (long int) arg; int err; /* Get the mutex. */ err = pthread_mutex_lock (&mut); if (err != 0) { printf ("child %d mutex_lock failed: %s\n", i, strerror (err)); exit (1); } /* This call should never return. */ pthread_cond_wait (&cond, &mut); /* We should never get here. */ exit (1); return NULL; } static int do_test (void) { int err; int i; for (i = 0; i < N; ++i) { pthread_t th; if (i != 0) { /* Release the mutex. */ err = pthread_mutex_unlock (&mut); if (err != 0) { printf ("mutex_unlock %d failed: %s\n", i, strerror (err)); return 1; } } err = pthread_create (&th, NULL, tf, (void *) (long int) i); if (err != 0) { printf ("create %d failed: %s\n", i, strerror (err)); return 1; } /* Get the mutex. */ err = pthread_mutex_lock (&mut); if (err != 0) { printf ("mutex_lock %d failed: %s\n", i, strerror (err)); return 1; } } /* Set an alarm for 1 second. The wrapper will expect this. */ alarm (1); /* This call should never return. */ pthread_cond_wait (&cond, &mut); puts ("cond_wait returned"); return 1; } #define EXPECTED_SIGNAL SIGALRM #define TEST_FUNCTION do_test () #include "../test-skeleton.c"