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/* Copyright (C) 2002-2024 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 <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
static pthread_mutex_t m;
static pthread_barrier_t b;
static void *
tf (void *arg)
{
int e = pthread_mutex_unlock (&m);
if (e == 0)
{
puts ("1st mutex_unlock in child succeeded");
exit (1);
}
if (e != EPERM)
{
puts ("1st mutex_unlock in child didn't return EPERM");
exit (1);
}
e = pthread_mutex_trylock (&m);
if (e == 0)
{
puts ("mutex_trylock in second thread succeeded");
exit (1);
}
if (e != EBUSY)
{
puts ("mutex_trylock returned wrong value");
exit (1);
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
exit (1);
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
exit (1);
}
e = pthread_mutex_unlock (&m);
if (e == 0)
{
puts ("2nd mutex_unlock in child succeeded");
exit (1);
}
if (e != EPERM)
{
puts ("2nd mutex_unlock in child didn't return EPERM");
exit (1);
}
if (pthread_mutex_trylock (&m) != 0)
{
puts ("2nd mutex_trylock in second thread failed");
exit (1);
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("3rd mutex_unlock in second thread failed");
exit (1);
}
return NULL;
}
static int
do_test (void)
{
pthread_mutexattr_t a;
if (pthread_mutexattr_init (&a) != 0)
{
puts ("mutexattr_init failed");
return 1;
}
if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
{
puts ("mutexattr_settype failed");
return 1;
}
#ifdef ENABLE_PI
if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
{
puts ("pthread_mutexattr_setprotocol failed");
return 1;
}
#endif
int e;
e = pthread_mutex_init (&m, &a);
if (e != 0)
{
#ifdef ENABLE_PI
if (e == ENOTSUP)
{
puts ("PI mutexes unsupported");
return 0;
}
#endif
puts ("mutex_init failed");
return 1;
}
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_mutex_lock (&m) != 0)
{
puts ("mutex_lock failed");
return 1;
}
if (pthread_mutex_lock (&m) != 0)
{
puts ("2nd mutex_lock failed");
return 1;
}
if (pthread_mutex_trylock (&m) != 0)
{
puts ("1st trylock failed");
return 1;
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("mutex_unlock failed");
return 1;
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("2nd mutex_unlock failed");
return 1;
}
pthread_t th;
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("create failed");
return 1;
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
return 1;
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("3rd mutex_unlock failed");
return 1;
}
e = pthread_mutex_unlock (&m);
if (e == 0)
{
puts ("4th mutex_unlock succeeded");
return 1;
}
if (e != EPERM)
{
puts ("4th mutex_unlock didn't return EPERM");
return 1;
}
e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
return 1;
}
if (pthread_join (th, NULL) != 0)
{
puts ("join failed");
return 1;
}
if (pthread_barrier_destroy (&b) != 0)
{
puts ("barrier_destroy failed");
return 1;
}
if (pthread_mutex_destroy (&m) != 0)
{
puts ("mutex_destroy failed");
return 1;
}
if (pthread_mutexattr_destroy (&a) != 0)
{
puts ("mutexattr_destroy failed");
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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