45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Initialize a rwlock. Generic version.
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Copyright (C) 2002-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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, see
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<http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <string.h>
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#include <pt-internal.h>
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int
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_pthread_rwlock_init (pthread_rwlock_t *rwlock,
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const pthread_rwlockattr_t *attr)
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{
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*rwlock = (pthread_rwlock_t) __PTHREAD_RWLOCK_INITIALIZER;
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if (attr == NULL
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|| memcmp (attr, &__pthread_default_rwlockattr, sizeof (*attr)) == 0)
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/* Use the default attributes. */
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return 0;
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/* Non-default attributes. */
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rwlock->__attr = malloc (sizeof *attr);
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if (rwlock->__attr == NULL)
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return ENOMEM;
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*rwlock->__attr = *attr;
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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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