1 | /* pthread_barrier_init. Generic version. |
2 | Copyright (C) 2002-2022 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 <string.h> |
21 | #include <assert.h> |
22 | |
23 | #include <pt-internal.h> |
24 | |
25 | int |
26 | pthread_barrier_init (pthread_barrier_t *barrier, |
27 | const pthread_barrierattr_t *attr, unsigned count) |
28 | { |
29 | ASSERT_TYPE_SIZE (pthread_barrier_t, __SIZEOF_PTHREAD_BARRIER_T); |
30 | |
31 | if (count == 0) |
32 | return EINVAL; |
33 | |
34 | memset (barrier, 0, sizeof *barrier); |
35 | |
36 | barrier->__lock = PTHREAD_SPINLOCK_INITIALIZER; |
37 | barrier->__pending = count; |
38 | barrier->__count = count; |
39 | |
40 | if (attr == NULL |
41 | || memcmp (attr, &__pthread_default_barrierattr, sizeof (*attr)) == 0) |
42 | /* Use the default attributes. */ |
43 | return 0; |
44 | |
45 | /* Non-default attributes. */ |
46 | |
47 | barrier->__attr = malloc (sizeof *attr); |
48 | if (barrier->__attr == NULL) |
49 | return ENOMEM; |
50 | |
51 | *barrier->__attr = *attr; |
52 | return 0; |
53 | } |
54 | |