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/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
static int cntr;
static void
cleanup (void *arg)
{
if (arg != (void *) 42l)
cntr = 42;
else
cntr = 1;
}
static void *
tf (void *arg)
{
/* Ignore all signals. This must not have any effect on delivering
the cancellation signal. */
sigset_t ss;
sigfillset (&ss);
if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
{
puts ("pthread_sigmask failed");
exit (1);
}
pthread_cleanup_push (cleanup, (void *) 42l);
int err = pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
if (err != 0)
{
printf ("setcanceltype failed: %s\n", strerror (err));
exit (1);
}
/* The following code is not standard compliant: the mutex functions
must not be called with asynchronous cancellation enabled. */
err = pthread_mutex_unlock (&m2);
if (err != 0)
{
printf ("child: mutex_unlock failed: %s\n", strerror (err));
exit (1);
}
err = pthread_mutex_lock (&m1);
if (err != 0)
{
printf ("child: 1st mutex_lock failed: %s\n", strerror (err));
exit (1);
}
/* We should never come here. */
pthread_cleanup_pop (0);
return NULL;
}
static int
do_test (void)
{
int err;
pthread_t th;
int result = 0;
void *retval;
/* Get the mutexes. */
err = pthread_mutex_lock (&m1);
if (err != 0)
{
printf ("parent: 1st mutex_lock failed: %s\n", strerror (err));
return 1;
}
err = pthread_mutex_lock (&m2);
if (err != 0)
{
printf ("parent: 2nd mutex_lock failed: %s\n", strerror (err));
return 1;
}
err = pthread_create (&th, NULL, tf, NULL);
if (err != 0)
{
printf ("create failed: %s\n", strerror (err));
return 1;
}
err = pthread_mutex_lock (&m2);
if (err != 0)
{
printf ("parent: 3rd mutex_lock failed: %s\n", strerror (err));
return 1;
}
err = pthread_cancel (th);
if (err != 0)
{
printf ("cancel failed: %s\n", strerror (err));
return 1;
}
err = pthread_join (th, &retval);
if (err != 0)
{
printf ("join failed: %s\n", strerror (err));
return 1;
}
if (retval != PTHREAD_CANCELED)
{
printf ("wrong return value: %p\n", retval);
result = 1;
}
if (cntr == 42)
{
puts ("cleanup handler called with wrong argument");
result = 1;
}
else if (cntr != 1)
{
puts ("cleanup handling not called");
result = 1;
}
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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