228 lines
5.4 KiB
C
228 lines
5.4 KiB
C
/* MIPS SDE threads compatibility routines for libgcc2 and libobjc. */
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/* Compile this one with gcc. */
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/* Copyright (C) 2006, 2007 Free Software Foundation, Inc.
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Contributed by Nigel Stephens <nigel@mips.com>
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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 2, 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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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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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 GCC_GTHR_MIPSSDE_H
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#define GCC_GTHR_MIPSSDE_H
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/* MIPS SDE threading API specific definitions.
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Easy, since the interface is pretty much one-to-one. */
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#define __GTHREADS 1
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#include <sdethread.h>
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#include <unistd.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef __sdethread_key_t __gthread_key_t;
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typedef __sdethread_once_t __gthread_once_t;
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typedef __sdethread_mutex_t __gthread_mutex_t;
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typedef struct {
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long depth;
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__sdethread_t owner;
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__sdethread_mutex_t actual;
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} __gthread_recursive_mutex_t;
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#define __GTHREAD_MUTEX_INIT __SDETHREAD_MUTEX_INITIALIZER("gthr")
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#define __GTHREAD_ONCE_INIT __SDETHREAD_ONCE_INIT
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static inline int
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__gthread_recursive_mutex_init_function(__gthread_recursive_mutex_t *mutex);
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#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
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#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
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# define __gthrw(name) \
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static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
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# define __gthrw_(name) __gthrw_ ## name
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#else
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# define __gthrw(name)
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# define __gthrw_(name) name
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#endif
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__gthrw(__sdethread_once)
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__gthrw(__sdethread_key_create)
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__gthrw(__sdethread_key_delete)
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__gthrw(__sdethread_getspecific)
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__gthrw(__sdethread_setspecific)
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__gthrw(__sdethread_self)
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__gthrw(__sdethread_mutex_lock)
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__gthrw(__sdethread_mutex_trylock)
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__gthrw(__sdethread_mutex_unlock)
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__gthrw(__sdethread_mutex_init)
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__gthrw(__sdethread_threading)
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#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
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static inline int
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__gthread_active_p (void)
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{
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return !!(void *)&__sdethread_threading;
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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 (void)
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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) (void))
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{
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if (__gthread_active_p ())
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return __gthrw_(__sdethread_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 __gthrw_(__sdethread_key_create) (key, dtor);
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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 __gthrw_(__sdethread_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 __gthrw_(__sdethread_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 __gthrw_(__sdethread_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 __gthrw_(__sdethread_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 __gthrw_(__sdethread_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 __gthrw_(__sdethread_mutex_unlock) (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_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
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{
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mutex->depth = 0;
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mutex->owner = __gthrw_(__sdethread_self) ();
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return __gthrw_(__sdethread_mutex_init) (&mutex->actual, NULL);
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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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if (__gthread_active_p ())
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{
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__sdethread_t me = __gthrw_(__sdethread_self) ();
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if (mutex->owner != me)
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{
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__gthrw_(__sdethread_mutex_lock) (&mutex->actual);
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mutex->owner = me;
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}
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mutex->depth++;
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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_trylock (__gthread_recursive_mutex_t *mutex)
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{
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if (__gthread_active_p ())
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{
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__sdethread_t me = __gthrw_(__sdethread_self) ();
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if (mutex->owner != me)
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{
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if (__gthrw_(__sdethread_mutex_trylock) (&mutex->actual))
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return 1;
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mutex->owner = me;
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}
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mutex->depth++;
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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_unlock (__gthread_recursive_mutex_t *mutex)
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{
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if (__gthread_active_p ())
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{
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if (--mutex->depth == 0)
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{
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mutex->owner = (__sdethread_t) 0;
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__gthrw_(__sdethread_mutex_unlock) (&mutex->actual);
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}
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}
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* ! GCC_GTHR_MIPSSDE_H */
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