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/* Copyright (C) 2002-2013 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"
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