9651974448
This patch adds libstdc++ to libports. With the previous version of the stdcxx library, the build system used the C++ standard library that comes with the compiler. This mechanism was prone to inconsistencies of types defined in the header files used at compile time of the tool chain and the types provided by our libc. By building the C++ standard library as part of the Genode build process, such inconsistencies cannot happen anymore. Note that the patch changes the meaning of the 'stdcxx' library for users that happened to rely on 'stdcxx' for hybrid Linux/Genode applications. For such uses, the original mechanism is still available, in the renamed form of 'toolchain_stdcxx'.
293 lines
6.2 KiB
C
293 lines
6.2 KiB
C
/* Threads compatibility routines for libgcc2 and libobjc. */
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/* Compile this one with gcc. */
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/* Copyright (C) 1997, 1999, 2000, 2004, 2008, 2009
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Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_GTHR_SINGLE_H
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#define GCC_GTHR_SINGLE_H
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/* Just provide compatibility for mutex handling. */
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typedef int __gthread_key_t;
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typedef int __gthread_once_t;
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typedef int __gthread_mutex_t;
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typedef int __gthread_recursive_mutex_t;
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#define __GTHREAD_ONCE_INIT 0
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#define __GTHREAD_MUTEX_INIT 0
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#define __GTHREAD_RECURSIVE_MUTEX_INIT 0
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#define UNUSED __attribute__((unused))
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#ifdef _LIBOBJC
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/* Thread local storage for a single thread */
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static void *thread_local_storage = NULL;
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/* Backend initialization functions */
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/* Initialize the threads subsystem. */
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static inline int
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__gthread_objc_init_thread_system (void)
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{
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/* No thread support available */
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return -1;
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}
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/* Close the threads subsystem. */
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static inline int
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__gthread_objc_close_thread_system (void)
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{
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/* No thread support available */
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return -1;
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}
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/* Backend thread functions */
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/* Create a new thread of execution. */
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static inline objc_thread_t
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__gthread_objc_thread_detach (void (* func)(void *), void * arg UNUSED)
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{
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/* No thread support available */
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return NULL;
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}
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/* Set the current thread's priority. */
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static inline int
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__gthread_objc_thread_set_priority (int priority UNUSED)
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{
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/* No thread support available */
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return -1;
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}
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/* Return the current thread's priority. */
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static inline int
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__gthread_objc_thread_get_priority (void)
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{
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return OBJC_THREAD_INTERACTIVE_PRIORITY;
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}
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/* Yield our process time to another thread. */
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static inline void
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__gthread_objc_thread_yield (void)
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{
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return;
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}
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/* Terminate the current thread. */
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static inline int
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__gthread_objc_thread_exit (void)
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{
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/* No thread support available */
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/* Should we really exit the program */
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/* exit (&__objc_thread_exit_status); */
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return -1;
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}
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/* Returns an integer value which uniquely describes a thread. */
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static inline objc_thread_t
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__gthread_objc_thread_id (void)
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{
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/* No thread support, use 1. */
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return (objc_thread_t) 1;
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}
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/* Sets the thread's local storage pointer. */
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static inline int
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__gthread_objc_thread_set_data (void *value)
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{
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thread_local_storage = value;
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return 0;
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}
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/* Returns the thread's local storage pointer. */
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static inline void *
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__gthread_objc_thread_get_data (void)
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{
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return thread_local_storage;
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}
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/* Backend mutex functions */
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/* Allocate a mutex. */
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static inline int
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__gthread_objc_mutex_allocate (objc_mutex_t mutex UNUSED)
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{
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return 0;
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}
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/* Deallocate a mutex. */
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static inline int
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__gthread_objc_mutex_deallocate (objc_mutex_t mutex UNUSED)
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{
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return 0;
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}
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/* Grab a lock on a mutex. */
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static inline int
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__gthread_objc_mutex_lock (objc_mutex_t mutex UNUSED)
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{
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/* There can only be one thread, so we always get the lock */
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return 0;
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}
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/* Try to grab a lock on a mutex. */
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static inline int
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__gthread_objc_mutex_trylock (objc_mutex_t mutex UNUSED)
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{
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/* There can only be one thread, so we always get the lock */
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return 0;
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}
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/* Unlock the mutex */
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static inline int
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__gthread_objc_mutex_unlock (objc_mutex_t mutex UNUSED)
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{
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return 0;
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}
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/* Backend condition mutex functions */
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/* Allocate a condition. */
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static inline int
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__gthread_objc_condition_allocate (objc_condition_t condition UNUSED)
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{
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return 0;
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}
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/* Deallocate a condition. */
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static inline int
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__gthread_objc_condition_deallocate (objc_condition_t condition UNUSED)
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{
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return 0;
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}
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/* Wait on the condition */
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static inline int
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__gthread_objc_condition_wait (objc_condition_t condition UNUSED,
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objc_mutex_t mutex UNUSED)
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{
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return 0;
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}
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/* Wake up all threads waiting on this condition. */
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static inline int
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__gthread_objc_condition_broadcast (objc_condition_t condition UNUSED)
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{
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return 0;
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}
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/* Wake up one thread waiting on this condition. */
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static inline int
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__gthread_objc_condition_signal (objc_condition_t condition UNUSED)
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{
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return 0;
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}
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#else /* _LIBOBJC */
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static inline int
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__gthread_active_p (void)
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{
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return 0;
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}
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static inline int
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__gthread_once (__gthread_once_t *__once UNUSED, void (*__func) (void) UNUSED)
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{
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return 0;
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}
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static inline int UNUSED
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__gthread_key_create (__gthread_key_t *__key UNUSED, void (*__func) (void *) UNUSED)
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{
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return 0;
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}
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static int UNUSED
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__gthread_key_delete (__gthread_key_t __key UNUSED)
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{
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return 0;
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}
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static inline void *
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__gthread_getspecific (__gthread_key_t __key UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_setspecific (__gthread_key_t __key UNUSED, const void *__v UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_mutex_destroy (__gthread_mutex_t *__mutex UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_mutex_lock (__gthread_mutex_t *__mutex UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_mutex_trylock (__gthread_mutex_t *__mutex UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_mutex_unlock (__gthread_mutex_t *__mutex UNUSED)
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{
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return 0;
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}
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static inline int
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__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
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{
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return __gthread_mutex_lock (__mutex);
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}
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static inline int
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__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
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{
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return __gthread_mutex_trylock (__mutex);
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}
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static inline int
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__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
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{
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return __gthread_mutex_unlock (__mutex);
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}
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#endif /* _LIBOBJC */
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#undef UNUSED
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#endif /* ! GCC_GTHR_SINGLE_H */
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