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d4697bc9 | 1 | /* Copyright (C) 2002-2014 Free Software Foundation, Inc. |
e51deae7 UD |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
e51deae7 UD |
18 | |
19 | #include <errno.h> | |
20 | #include "pthreadP.h" | |
21 | #include <lowlevellock.h> | |
22 | ||
23 | int | |
24 | pthread_barrier_init (barrier, attr, count) | |
25 | pthread_barrier_t *barrier; | |
26 | const pthread_barrierattr_t *attr; | |
27 | unsigned int count; | |
28 | { | |
29 | union sparc_pthread_barrier *ibarrier; | |
30 | ||
a1ffb40e | 31 | if (__glibc_unlikely (count == 0)) |
e51deae7 UD |
32 | return EINVAL; |
33 | ||
34 | struct pthread_barrierattr *iattr = (struct pthread_barrierattr *) attr; | |
35 | if (iattr != NULL) | |
36 | { | |
37 | if (iattr->pshared != PTHREAD_PROCESS_PRIVATE | |
38 | && __builtin_expect (iattr->pshared != PTHREAD_PROCESS_SHARED, 0)) | |
39 | /* Invalid attribute. */ | |
40 | return EINVAL; | |
41 | } | |
42 | ||
43 | ibarrier = (union sparc_pthread_barrier *) barrier; | |
44 | ||
45 | /* Initialize the individual fields. */ | |
46 | ibarrier->b.lock = LLL_LOCK_INITIALIZER; | |
47 | ibarrier->b.left = count; | |
48 | ibarrier->b.init_count = count; | |
49 | ibarrier->b.curr_event = 0; | |
50 | ibarrier->s.left_lock = 0; | |
51 | ibarrier->s.pshared = (iattr && iattr->pshared == PTHREAD_PROCESS_SHARED); | |
52 | ||
53 | return 0; | |
54 | } |