1 /* pthread_mutex_destroy.  Hurd version.
2    Copyright (C) 2016-2022 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library;  if not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #include <pthread.h>
20 #include <stdlib.h>
21 #include <assert.h>
22 #include <pt-internal.h>
23 #include "pt-mutex.h"
24 #include <hurdlock.h>
25 
26 int
__pthread_mutex_destroy(pthread_mutex_t * mtxp)27 __pthread_mutex_destroy (pthread_mutex_t *mtxp)
28 {
29   atomic_read_barrier ();
30   if (*(volatile unsigned int *) &mtxp->__lock != 0)
31     return EBUSY;
32 
33   mtxp->__type = -1;
34   return 0;
35 }
36 
37 weak_alias (__pthread_mutex_destroy, pthread_mutex_destroy)
38 hidden_def (__pthread_mutex_destroy)
39