diff options
Diffstat (limited to 'nptl/pthread_rwlock_init.c')
| -rw-r--r-- | nptl/pthread_rwlock_init.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_init.c b/nptl/pthread_rwlock_init.c new file mode 100644 index 0000000000..f664dd8104 --- /dev/null +++ b/nptl/pthread_rwlock_init.c @@ -0,0 +1,51 @@ +/* Copyright (C) 2002 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include "pthreadP.h" + + +static const struct pthread_rwlockattr default_attr = + { + .lockkind = PTHREAD_RWLOCK_DEFAULT_NP, + .pshared = PTHREAD_PROCESS_PRIVATE + }; + + +int +__pthread_rwlock_init (rwlock, attr) + pthread_rwlock_t *rwlock; + const pthread_rwlockattr_t *attr; +{ + const struct pthread_rwlockattr *iattr; + + iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_attr; + + rwlock->__data.__lock = 0; + rwlock->__data.__flags + = iattr->lockkind == PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP; + rwlock->__data.__nr_readers = 0; + rwlock->__data.__writer = 0; + rwlock->__data.__readers_wakeup = 0; + rwlock->__data.__writer_wakeup = 0; + rwlock->__data.__nr_readers_queued = 0; + rwlock->__data.__nr_writers_queued = 0; + + return 0; +} +strong_alias (__pthread_rwlock_init, pthread_rwlock_init) |