| /* Copyright (C) 2002-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| |
| 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "pthreadP.h" |
| #include <string.h> |
| |
| |
| static const struct pthread_rwlockattr default_rwlockattr = |
| { |
| .lockkind = PTHREAD_RWLOCK_DEFAULT_NP, |
| .pshared = PTHREAD_PROCESS_PRIVATE |
| }; |
| |
| |
| /* See pthread_rwlock_common.c. */ |
| int |
| __pthread_rwlock_init (pthread_rwlock_t *rwlock, |
| const pthread_rwlockattr_t *attr) |
| { |
| ASSERT_TYPE_SIZE (pthread_rwlock_t, __SIZEOF_PTHREAD_RWLOCK_T); |
| |
| const struct pthread_rwlockattr *iattr; |
| |
| iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_rwlockattr; |
| |
| memset (rwlock, '\0', sizeof (*rwlock)); |
| |
| rwlock->__data.__flags = iattr->lockkind; |
| |
| /* The value of __SHARED in a private rwlock must be zero. */ |
| rwlock->__data.__shared = (iattr->pshared != PTHREAD_PROCESS_PRIVATE); |
| |
| return 0; |
| } |
| strong_alias (__pthread_rwlock_init, pthread_rwlock_init) |
