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113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/* Note that this test requires more than the standard. It is
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required that there are no spurious wakeups if only more readers
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are added. This is a reasonable demand. */
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static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
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#define N 10
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static void *
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tf (void *arg)
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{
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int i = (long int) arg;
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int err;
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/* Get the mutex. */
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err = pthread_mutex_lock (&mut);
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if (err != 0)
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{
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printf ("child %d mutex_lock failed: %s\n", i, strerror (err));
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exit (1);
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}
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/* This call should never return. */
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pthread_cond_wait (&cond, &mut);
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/* We should never get here. */
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exit (1);
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return NULL;
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}
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static int
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do_test (void)
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{
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int err;
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int i;
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for (i = 0; i < N; ++i)
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{
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pthread_t th;
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if (i != 0)
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{
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/* Release the mutex. */
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err = pthread_mutex_unlock (&mut);
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if (err != 0)
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{
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printf ("mutex_unlock %d failed: %s\n", i, strerror (err));
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return 1;
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}
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}
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err = pthread_create (&th, NULL, tf, (void *) (long int) i);
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if (err != 0)
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{
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printf ("create %d failed: %s\n", i, strerror (err));
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return 1;
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}
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/* Get the mutex. */
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err = pthread_mutex_lock (&mut);
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if (err != 0)
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{
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printf ("mutex_lock %d failed: %s\n", i, strerror (err));
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return 1;
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}
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}
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/* Set an alarm for 1 second. The wrapper will expect this. */
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alarm (1);
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/* This call should never return. */
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pthread_cond_wait (&cond, &mut);
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puts ("cond_wait returned");
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return 1;
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}
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#define EXPECTED_SIGNAL SIGALRM
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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