52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include "pthreadP.h"
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static const struct pthread_rwlockattr default_attr =
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{
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.lockkind = PTHREAD_RWLOCK_DEFAULT_NP,
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.pshared = PTHREAD_PROCESS_PRIVATE
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};
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int
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__pthread_rwlock_init (rwlock, attr)
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pthread_rwlock_t *rwlock;
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const pthread_rwlockattr_t *attr;
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{
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const struct pthread_rwlockattr *iattr;
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iattr = ((const struct pthread_rwlockattr *) attr) ?: &default_attr;
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rwlock->__data.__lock = 0;
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rwlock->__data.__flags
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= iattr->lockkind == PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP;
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rwlock->__data.__nr_readers = 0;
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rwlock->__data.__writer = 0;
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rwlock->__data.__readers_wakeup = 0;
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rwlock->__data.__writer_wakeup = 0;
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rwlock->__data.__nr_readers_queued = 0;
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rwlock->__data.__nr_writers_queued = 0;
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return 0;
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}
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strong_alias (__pthread_rwlock_init, pthread_rwlock_init)
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