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/* MIPS SDE threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
/* Copyright (C) 2006-2022 Free Software Foundation, Inc.
Contributed by Nigel Stephens <nigel@mips.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_GTHR_MIPSSDE_H
#define GCC_GTHR_MIPSSDE_H
/* MIPS SDE threading API specific definitions.
Easy, since the interface is pretty much one-to-one. */
#define __GTHREADS 1
#include <sdethread.h>
#include <unistd.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef __sdethread_key_t __gthread_key_t;
typedef __sdethread_once_t __gthread_once_t;
typedef __sdethread_mutex_t __gthread_mutex_t;
typedef struct {
long depth;
__sdethread_t owner;
__sdethread_mutex_t actual;
} __gthread_recursive_mutex_t;
#define __GTHREAD_MUTEX_INIT __SDETHREAD_MUTEX_INITIALIZER("gthr")
#define __GTHREAD_ONCE_INIT __SDETHREAD_ONCE_INIT
static inline int
__gthread_recursive_mutex_init_function(__gthread_recursive_mutex_t *__mutex);
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
# define __gthrw(name) \
static __typeof(name) __gthrw_ ## name __attribute__ ((__weakref__(#name)));
# define __gthrw_(name) __gthrw_ ## name
#else
# define __gthrw(name)
# define __gthrw_(name) name
#endif
__gthrw(__sdethread_once)
__gthrw(__sdethread_key_create)
__gthrw(__sdethread_key_delete)
__gthrw(__sdethread_getspecific)
__gthrw(__sdethread_setspecific)
__gthrw(__sdethread_self)
__gthrw(__sdethread_mutex_lock)
__gthrw(__sdethread_mutex_trylock)
__gthrw(__sdethread_mutex_unlock)
__gthrw(__sdethread_mutex_init)
__gthrw(__sdethread_threading)
#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
static inline int
__gthread_active_p (void)
{
return !!(void *)&__sdethread_threading;
}
#else /* not SUPPORTS_WEAK */
static inline int
__gthread_active_p (void)
{
return 1;
}
#endif /* SUPPORTS_WEAK */
static inline int
__gthread_once (__gthread_once_t *__once, void (*__func) (void))
{
if (__gthread_active_p ())
return __gthrw_(__sdethread_once) (__once, __func);
else
return -1;
}
static inline int
__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
{
return __gthrw_(__sdethread_key_create) (__key, __dtor);
}
static inline int
__gthread_key_delete (__gthread_key_t __key)
{
return __gthrw_(__sdethread_key_delete) (__key);
}
static inline void *
__gthread_getspecific (__gthread_key_t __key)
{
return __gthrw_(__sdethread_getspecific) (__key);
}
static inline int
__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
{
return __gthrw_(__sdethread_setspecific) (__key, __ptr);
}
static inline int
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(__mutex))
{
return 0;
}
static inline int
__gthread_mutex_lock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
return __gthrw_(__sdethread_mutex_lock) (__mutex);
else
return 0;
}
static inline int
__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
return __gthrw_(__sdethread_mutex_trylock) (__mutex);
else
return 0;
}
static inline int
__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
return __gthrw_(__sdethread_mutex_unlock) (__mutex);
else
return 0;
}
static inline int
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
{
__mutex->depth = 0;
__mutex->owner = __gthrw_(__sdethread_self) ();
return __gthrw_(__sdethread_mutex_init) (&__mutex->actual, NULL);
}
static inline int
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
{
if (__gthread_active_p ())
{
__sdethread_t __me = __gthrw_(__sdethread_self) ();
if (__mutex->owner != __me)
{
__gthrw_(__sdethread_mutex_lock) (&__mutex->actual);
__mutex->owner = __me;
}
__mutex->depth++;
}
return 0;
}
static inline int
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
{
if (__gthread_active_p ())
{
__sdethread_t __me = __gthrw_(__sdethread_self) ();
if (__mutex->owner != __me)
{
if (__gthrw_(__sdethread_mutex_trylock) (&__mutex->actual))
return 1;
__mutex->owner = __me;
}
__mutex->depth++;
}
return 0;
}
static inline int
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
{
if (__gthread_active_p ())
{
if (--__mutex->depth == 0)
{
__mutex->owner = (__sdethread_t) 0;
__gthrw_(__sdethread_mutex_unlock) (&__mutex->actual);
}
}
return 0;
}
static inline int
__gthread_recursive_mutex_destroy (__gthread_recursive_mutex_t
* UNUSED(__mutex))
{
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* ! GCC_GTHR_MIPSSDE_H */
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