1 /* Copyright (C) 2002, 2007 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <http://www.gnu.org/licenses/>. */
18
19 #include <errno.h>
20 #include "pthreadP.h"
21 #include <lowlevellock.h>
22
23 int
pthread_barrier_destroy(pthread_barrier_t * barrier)24 pthread_barrier_destroy (
25 pthread_barrier_t *barrier)
26 {
27 union sparc_pthread_barrier *ibarrier;
28 int result = EBUSY;
29
30 ibarrier = (union sparc_pthread_barrier *) barrier;
31
32 int private = ibarrier->s.pshared ? LLL_SHARED : LLL_PRIVATE;
33
34 lll_lock (ibarrier->b.lock, private);
35
36 if (__builtin_expect (ibarrier->b.left == ibarrier->b.init_count, 1))
37 /* The barrier is not used anymore. */
38 result = 0;
39 else
40 /* Still used, return with an error. */
41 lll_unlock (ibarrier->b.lock, private);
42
43 return result;
44 }
45