mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 22:30:07 +00:00
112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
/* Copyright (C) 2002-2017 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>
|
|
|
|
static int do_test (void);
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|
|
|
|
/* 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. */
|
|
xpthread_cond_wait (&cond, &mut);
|
|
puts ("error: pthread_cond_wait in tf returned");
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
delayed_exit (1);
|
|
|
|
/* This call should never return. */
|
|
xpthread_cond_wait (&cond, &mut);
|
|
|
|
puts ("error: pthread_cond_wait in do_test returned");
|
|
return 1;
|
|
}
|