148 lines
3.5 KiB
C
148 lines
3.5 KiB
C
/* Threads compatibily routines for libgcc2. */
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/* Compile this one with gcc. */
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with other files,
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some of which are compiled with GCC, to produce an executable,
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this library does not by itself cause the resulting executable
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to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#ifndef __gthr_posix_h
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#define __gthr_posix_h
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/* POSIX threads specific definitions.
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Easy, since the interface is just one-to-one mapping. */
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#define __GTHREADS 1
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#include <pthread.h>
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typedef pthread_key_t __gthread_key_t;
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typedef pthread_once_t __gthread_once_t;
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typedef pthread_mutex_t __gthread_mutex_t;
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#define __GTHREAD_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
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#define __GTHREAD_ONCE_INIT PTHREAD_ONCE_INIT
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#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
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#pragma weak pthread_once
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#pragma weak pthread_key_create
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#pragma weak pthread_key_delete
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#pragma weak pthread_getspecific
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#pragma weak pthread_setspecific
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#pragma weak pthread_create
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#pragma weak pthread_mutex_lock
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#pragma weak pthread_mutex_trylock
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#pragma weak pthread_mutex_unlock
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static void *__gthread_active_ptr = &pthread_create;
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static inline int
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__gthread_active_p ()
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{
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return __gthread_active_ptr != 0;
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}
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#else /* not SUPPORTS_WEAK */
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static inline int
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__gthread_active_p ()
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{
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return 1;
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}
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#endif /* SUPPORTS_WEAK */
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static inline int
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__gthread_once (__gthread_once_t *once, void (*func) ())
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{
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if (__gthread_active_p ())
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return pthread_once (once, func);
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else
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return -1;
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}
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static inline int
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__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
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{
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return pthread_key_create (key, dtor);
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}
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static inline int
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__gthread_key_dtor (__gthread_key_t key, void *ptr)
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{
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/* Just reset the key value to zero. */
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if (ptr)
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return pthread_setspecific (key, 0);
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else
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return 0;
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}
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static inline int
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__gthread_key_delete (__gthread_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 inline void *
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__gthread_getspecific (__gthread_key_t key)
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{
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return pthread_getspecific (key);
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}
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static inline int
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__gthread_setspecific (__gthread_key_t key, const void *ptr)
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{
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return pthread_setspecific (key, ptr);
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}
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static inline int
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__gthread_mutex_lock (__gthread_mutex_t *mutex)
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{
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if (__gthread_active_p ())
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return pthread_mutex_lock (mutex);
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else
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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)
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{
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if (__gthread_active_p ())
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return pthread_mutex_trylock (mutex);
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else
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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)
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{
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if (__gthread_active_p ())
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return pthread_mutex_unlock (mutex);
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else
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return 0;
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}
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#endif /* not __gthr_posix_h */
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