ceb336710e
* Fix typos in rwlock stubs. * Add pthread_XXX counterparts to the _pthread_XXX stubs which libraries like libX11 can use to ensure thread-safety without requiring the use of a thread library. Submitted by: Terry Lambert (pthread_cond_broadcast) Reviewed by: deischen
454 lines
12 KiB
C
454 lines
12 KiB
C
/*
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* Copyright (c) 2001 Daniel Eischen <deischen@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <signal.h>
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#include <pthread.h>
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#include <pthread_np.h>
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void *_pthread_getspecific(pthread_key_t key);
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pthread_t _pthread_self(void);
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/*
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* Weak symbols: All libc internal usage of these functions should
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* use the weak symbol versions (_pthread_XXX). If libpthread is
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* linked, it will override these functions with (non-weak) routines.
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* The _pthread_XXX functions are provided solely for internal libc
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* usage to avoid unwanted cancellation points and to differentiate
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* between application locks and libc locks (threads holding the
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* latter can't be allowed to exit/terminate).
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*
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* We also provide weak pthread_XXX stubs which call their
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* _pthread_XXX counterparts. These stubs may be used be other
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* libraries for ensuring thread-safety without requiring the presence
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* of a thread library.
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*/
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__weak_reference(_pthread_cond_init_stub, _pthread_cond_init);
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__weak_reference(_pthread_cond_signal_stub, _pthread_cond_signal);
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__weak_reference(_pthread_cond_broadcast_stub, _pthread_cond_broadcast);
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__weak_reference(_pthread_cond_wait_stub, _pthread_cond_wait);
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__weak_reference(_pthread_cond_destroy_stub, _pthread_cond_destroy);
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__weak_reference(_pthread_getspecific_stub, _pthread_getspecific);
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__weak_reference(_pthread_key_create_stub, _pthread_key_create);
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__weak_reference(_pthread_key_delete_stub, _pthread_key_delete);
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__weak_reference(_pthread_main_np_stub, _pthread_main_np);
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__weak_reference(_pthread_mutex_destroy_stub, _pthread_mutex_destroy);
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__weak_reference(_pthread_mutex_init_stub, _pthread_mutex_init);
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__weak_reference(_pthread_mutex_lock_stub, _pthread_mutex_lock);
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__weak_reference(_pthread_mutex_trylock_stub, _pthread_mutex_trylock);
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__weak_reference(_pthread_mutex_unlock_stub, _pthread_mutex_unlock);
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__weak_reference(_pthread_mutexattr_init_stub, _pthread_mutexattr_init);
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__weak_reference(_pthread_mutexattr_destroy_stub, _pthread_mutexattr_destroy);
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__weak_reference(_pthread_mutexattr_settype_stub, _pthread_mutexattr_settype);
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__weak_reference(_pthread_once_stub, _pthread_once);
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__weak_reference(_pthread_self_stub, _pthread_self);
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__weak_reference(_pthread_rwlock_init_stub, _pthread_rwlock_init);
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__weak_reference(_pthread_rwlock_destroy_stub, _pthread_rwlock_destroy);
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__weak_reference(_pthread_rwlock_rdlock_stub, _pthread_rwlock_rdlock);
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__weak_reference(_pthread_rwlock_tryrdlock_stub, _pthread_rwlock_tryrdlock);
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__weak_reference(_pthread_rwlock_trywrlock_stub, _pthread_rwlock_trywrlock);
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__weak_reference(_pthread_rwlock_unlock_stub, _pthread_rwlock_unlock);
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__weak_reference(_pthread_rwlock_wrlock_stub, _pthread_rwlock_wrlock);
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__weak_reference(_pthread_setspecific_stub, _pthread_setspecific);
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__weak_reference(_pthread_sigmask_stub, _pthread_sigmask);
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__weak_reference(pthread_cond_init_stub, pthread_cond_init);
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__weak_reference(pthread_cond_signal_stub, pthread_cond_signal);
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__weak_reference(pthread_cond_broadcast_stub, pthread_cond_broadcast);
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__weak_reference(pthread_cond_wait_stub, pthread_cond_wait);
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__weak_reference(pthread_cond_destroy_stub, pthread_cond_destroy);
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__weak_reference(pthread_getspecific_stub, pthread_getspecific);
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__weak_reference(pthread_key_create_stub, pthread_key_create);
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__weak_reference(pthread_key_delete_stub, pthread_key_delete);
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__weak_reference(pthread_main_np_stub, pthread_main_np);
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__weak_reference(pthread_mutex_destroy_stub, pthread_mutex_destroy);
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__weak_reference(pthread_mutex_init_stub, pthread_mutex_init);
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__weak_reference(pthread_mutex_lock_stub, pthread_mutex_lock);
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__weak_reference(pthread_mutex_trylock_stub, pthread_mutex_trylock);
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__weak_reference(pthread_mutex_unlock_stub, pthread_mutex_unlock);
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__weak_reference(pthread_mutexattr_init_stub, pthread_mutexattr_init);
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__weak_reference(pthread_mutexattr_destroy_stub, pthread_mutexattr_destroy);
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__weak_reference(pthread_mutexattr_settype_stub, pthread_mutexattr_settype);
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__weak_reference(pthread_once_stub, pthread_once);
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__weak_reference(pthread_self_stub, pthread_self);
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__weak_reference(pthread_rwlock_init_stub, pthread_rwlock_init);
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__weak_reference(pthread_rwlock_destroy_stub, pthread_rwlock_destroy);
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__weak_reference(pthread_rwlock_rdlock_stub, pthread_rwlock_rdlock);
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__weak_reference(pthread_rwlock_tryrdlock_stub, pthread_rwlock_tryrdlock);
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__weak_reference(pthread_rwlock_trywrlock_stub, pthread_rwlock_trywrlock);
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__weak_reference(pthread_rwlock_unlock_stub, pthread_rwlock_unlock);
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__weak_reference(pthread_rwlock_wrlock_stub, pthread_rwlock_wrlock);
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__weak_reference(pthread_setspecific_stub, pthread_setspecific);
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__weak_reference(pthread_sigmask_stub, pthread_sigmask);
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/* Define a null pthread structure just to satisfy _pthread_self. */
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struct pthread {
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};
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static struct pthread main_thread;
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static int
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_pthread_cond_init_stub(pthread_cond_t *cond,
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const pthread_condattr_t *cond_attr)
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{
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return (0);
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}
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static int
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_pthread_cond_signal_stub(pthread_cond_t *cond)
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{
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return (0);
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}
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static int
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_pthread_cond_broadcast_stub(pthread_cond_t *cond)
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{
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return (0);
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}
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static int
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_pthread_cond_wait_stub(pthread_cond_t *cond, pthread_mutex_t *mutex)
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{
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return (0);
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}
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static int
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_pthread_cond_destroy_stub(pthread_cond_t *cond)
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{
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return (0);
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}
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static void *
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_pthread_getspecific_stub(pthread_key_t key)
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{
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return (NULL);
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}
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static int
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_pthread_key_create_stub(pthread_key_t *key, void (*destructor) (void *))
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{
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return (0);
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}
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static int
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_pthread_key_delete_stub(pthread_key_t key)
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{
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return (0);
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}
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static int
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_pthread_main_np_stub()
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{
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return (-1);
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}
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static int
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_pthread_mutex_destroy_stub(pthread_mutex_t *mattr)
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{
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return (0);
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}
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static int
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_pthread_mutex_init_stub(pthread_mutex_t *mutex, const pthread_mutexattr_t *mattr)
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{
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return (0);
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}
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static int
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_pthread_mutex_lock_stub(pthread_mutex_t *mutex)
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{
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return (0);
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}
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static int
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_pthread_mutex_trylock_stub(pthread_mutex_t *mutex)
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{
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return (0);
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}
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static int
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_pthread_mutex_unlock_stub(pthread_mutex_t *mutex)
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{
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return (0);
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}
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static int
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_pthread_mutexattr_init_stub(pthread_mutexattr_t *mattr)
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{
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return (0);
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}
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static int
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_pthread_mutexattr_destroy_stub(pthread_mutexattr_t *mattr)
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{
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return (0);
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}
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static int
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_pthread_mutexattr_settype_stub(pthread_mutexattr_t *mattr, int type)
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{
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return (0);
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}
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static int
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_pthread_once_stub(pthread_once_t *once_control, void (*init_routine) (void))
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{
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return (0);
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}
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static int
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_pthread_rwlock_init_stub(pthread_rwlock_t *rwlock,
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const pthread_rwlockattr_t *attr)
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{
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return (0);
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}
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static int
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_pthread_rwlock_destroy_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static int
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_pthread_rwlock_rdlock_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static int
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_pthread_rwlock_tryrdlock_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static int
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_pthread_rwlock_trywrlock_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static int
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_pthread_rwlock_unlock_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static int
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_pthread_rwlock_wrlock_stub(pthread_rwlock_t *rwlock)
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{
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return (0);
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}
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static pthread_t
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_pthread_self_stub(void)
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{
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return (&main_thread);
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}
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static int
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_pthread_setspecific_stub(pthread_key_t key, const void *value)
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{
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return (0);
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}
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static int
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_pthread_sigmask_stub(int how, const sigset_t *set, sigset_t *oset)
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{
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return (0);
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}
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static int
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pthread_cond_init_stub(pthread_cond_t *cond,
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const pthread_condattr_t *cond_attr)
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{
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return (_pthread_cond_init(cond, cond_attr));
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}
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static int
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pthread_cond_signal_stub(pthread_cond_t *cond)
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{
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return (_pthread_cond_signal(cond));
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}
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static int
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pthread_cond_broadcast_stub(pthread_cond_t *cond)
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{
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return (_pthread_cond_broadcast(cond));
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}
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static int
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pthread_cond_wait_stub(pthread_cond_t *cond, pthread_mutex_t *mutex)
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{
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return (_pthread_cond_wait(cond, mutex));
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}
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static int
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pthread_cond_destroy_stub(pthread_cond_t *cond)
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{
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return (_pthread_cond_destroy(cond));
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}
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static void *
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pthread_getspecific_stub(pthread_key_t key)
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{
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return (_pthread_getspecific(key));
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}
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static int
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pthread_key_create_stub(pthread_key_t *key, void (*destructor) (void *))
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{
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return (_pthread_key_create(key, destructor));
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}
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static int
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pthread_key_delete_stub(pthread_key_t key)
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{
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return (_pthread_key_delete(key));
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}
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static int
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pthread_main_np_stub()
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{
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return (_pthread_main_np());
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}
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static int
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pthread_mutex_destroy_stub(pthread_mutex_t *mattr)
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{
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return (_pthread_mutex_destroy(mattr));
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}
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static int
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pthread_mutex_init_stub(pthread_mutex_t *mutex, const pthread_mutexattr_t *mattr)
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{
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return (_pthread_mutex_init(mutex, mattr));
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}
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static int
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pthread_mutex_lock_stub(pthread_mutex_t *mutex)
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{
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return (_pthread_mutex_lock(mutex));
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}
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static int
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pthread_mutex_trylock_stub(pthread_mutex_t *mutex)
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{
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return (_pthread_mutex_trylock(mutex));
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}
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static int
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pthread_mutex_unlock_stub(pthread_mutex_t *mutex)
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{
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return (_pthread_mutex_unlock(mutex));
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}
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static int
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pthread_mutexattr_init_stub(pthread_mutexattr_t *mattr)
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{
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return (_pthread_mutexattr_init(mattr));
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}
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static int
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pthread_mutexattr_destroy_stub(pthread_mutexattr_t *mattr)
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{
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return (_pthread_mutexattr_destroy(mattr));
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}
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static int
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pthread_mutexattr_settype_stub(pthread_mutexattr_t *mattr, int type)
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{
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return (_pthread_mutexattr_settype(mattr, type));
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}
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static int
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pthread_once_stub(pthread_once_t *once_control, void (*init_routine) (void))
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{
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return (_pthread_once(once_control, init_routine));
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}
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static int
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pthread_rwlock_init_stub(pthread_rwlock_t *rwlock,
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const pthread_rwlockattr_t *attr)
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{
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return (_pthread_rwlock_init(rwlock, attr));
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}
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static int
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pthread_rwlock_destroy_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_destroy(rwlock));
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}
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static int
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pthread_rwlock_rdlock_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_rdlock(rwlock));
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}
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static int
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pthread_rwlock_tryrdlock_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_tryrdlock(rwlock));
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}
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static int
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pthread_rwlock_trywrlock_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_trywrlock(rwlock));
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}
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static int
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pthread_rwlock_unlock_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_unlock(rwlock));
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}
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static int
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pthread_rwlock_wrlock_stub(pthread_rwlock_t *rwlock)
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{
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return (_pthread_rwlock_wrlock(rwlock));
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}
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static pthread_t
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pthread_self_stub(void)
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{
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return (_pthread_self());
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}
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static int
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pthread_setspecific_stub(pthread_key_t key, const void *value)
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{
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return (_pthread_setspecific(key, value));
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}
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static int
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pthread_sigmask_stub(int how, const sigset_t *set, sigset_t *oset)
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{
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return (_pthread_sigmask(how, set, oset));
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}
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