/* Threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2001, 2004, 2005, 2008, 2009
+ Free Software Foundation, Inc.
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 2, or (at your option) any later
+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
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+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.
-/* As a special exception, if you link this library with other files,
- some of which are compiled with GCC, to produce an executable,
- this library does not by itself cause the resulting executable
- to be covered by the GNU General Public License.
- This exception does not however invalidate any other reasons why
- the executable file might be covered by the GNU General Public License. */
+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_DCE_H
#define GCC_GTHR_DCE_H
DCE threads are based on POSIX threads draft 4, and many things
have changed since then. */
-#define __GTHREADS 1
-
-#include <pthread.h>
-
+/* Make sure CONST_CAST2 (original in system.h) is defined. */
+#ifndef CONST_CAST2
#ifdef __cplusplus
-#define UNUSED(x) x
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) (const_cast<TOTYPE> (X))
#else
-#define UNUSED(x) x __attribute__((unused))
+#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
#endif
+#endif
+
+#define __GTHREADS 1
+
+#include <pthread.h>
typedef pthread_key_t __gthread_key_t;
typedef pthread_once_t __gthread_once_t;
#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
#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
-#pragma weak pthread_once
-#pragma weak pthread_once_init
-#pragma weak pthread_keycreate
-#pragma weak pthread_key_delete
-#pragma weak pthread_getspecific
-#pragma weak pthread_setspecific
-#pragma weak pthread_create
-#pragma weak pthread_mutex_init
-#pragma weak pthread_mutex_lock
-#pragma weak pthread_mutex_trylock
-#pragma weak pthread_mutex_unlock
-#pragma weak pthread_mutexattr_create
-#pragma weak pthread_mutexattr_setkind_np
-#pragma weak pthread_mutexattr_delete
+__gthrw(pthread_once)
+__gthrw(pthread_keycreate)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+__gthrw(pthread_mutex_init)
+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_mutex_lock)
+__gthrw(pthread_mutex_trylock)
+__gthrw(pthread_mutex_unlock)
+__gthrw(pthread_mutexattr_create)
+__gthrw(pthread_mutexattr_setkind_np)
+__gthrw(pthread_mutexattr_delete)
#ifdef _LIBOBJC
/* Objective-C. */
-#pragma weak pthread_cond_broadcast
-#pragma weak pthread_cond_destroy
-#pragma weak pthread_cond_init
-#pragma weak pthread_cond_signal
-#pragma weak pthread_cond_wait
-#pragma weak pthread_exit
-#pragma weak pthread_getunique_np
-#pragma weak pthread_mutex_destroy
-#pragma weak pthread_self
-#pragma weak pthread_yield
+__gthrw(pthread_cond_broadcast)
+__gthrw(pthread_cond_destroy)
+__gthrw(pthread_cond_init)
+__gthrw(pthread_cond_signal)
+__gthrw(pthread_cond_wait)
+__gthrw(pthread_exit)
+
+#ifdef pthread_getunique_np
+# define __gthrw_pthread_getunique_np pthread_getunique_np
+#else
+__gthrw(pthread_getunique_np)
+# define __gthrw_pthread_getunique_np __gthrw_(pthread_getunique_np)
#endif
+__gthrw(pthread_mutex_destroy)
+__gthrw(pthread_self)
+__gthrw(pthread_yield)
+#endif
+
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+
static inline int
__gthread_active_p (void)
{
- static void *const __gthread_active_ptr = (void *) &pthread_create;
+ static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create);
return __gthread_active_ptr != 0;
}
__gthread_objc_init_thread_system (void)
{
if (__gthread_active_p ())
- /* Initialize the thread storage key */
- return pthread_keycreate (&_objc_thread_storage, NULL);
+ /* Initialize the thread storage key. */
+ return __gthrw_(pthread_keycreate) (&_objc_thread_storage, NULL);
else
return -1;
}
if (!__gthread_active_p ())
return NULL;
- if (!(pthread_create (&new_thread_handle, pthread_attr_default,
+ if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default,
(void *) func, arg)))
{
/* ??? May not work! (64bit) */
}
/* Change the priority. */
- if (pthread_setprio (pthread_self (), sys_priority) >= 0)
+ if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0)
return 0;
else
/* Failed */
if (__gthread_active_p ())
{
- if ((sys_priority = pthread_getprio (pthread_self ())) >= 0)
+ if ((sys_priority = pthread_getprio (__gthrw_(pthread_self) ())) >= 0)
{
if (sys_priority >= PRI_FG_MIN_NP
&& sys_priority <= PRI_FG_MAX_NP)
__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- pthread_yield ();
+ __gthrw_(pthread_yield) ();
}
/* Terminate the current thread. */
{
if (__gthread_active_p ())
/* exit the thread */
- pthread_exit (&__objc_thread_exit_status);
+ __gthrw_(pthread_exit) (&__objc_thread_exit_status);
/* Failed if we reached here */
return -1;
{
if (__gthread_active_p ())
{
- pthread_t self = pthread_self ();
+ pthread_t self = __gthrw_(pthread_self) ();
- return (objc_thread_t) pthread_getunique_np (&self);
+ return (objc_thread_t) __gthrw_pthread_getunique_np (&self);
}
else
return (objc_thread_t) 1;
__gthread_objc_thread_set_data (void *value)
{
if (__gthread_active_p ())
- return pthread_setspecific (_objc_thread_storage, value);
+ return __gthrw_(pthread_setspecific) (_objc_thread_storage, value);
else
{
thread_local_storage = value;
if (__gthread_active_p ())
{
- if (!(pthread_getspecific (_objc_thread_storage, &value)))
+ if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value)))
return value;
return NULL;
{
mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
- if (pthread_mutex_init ((pthread_mutex_t *) mutex->backend,
+ if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend,
pthread_mutexattr_default))
{
objc_free (mutex->backend);
{
if (__gthread_active_p ())
{
- if (pthread_mutex_destroy ((pthread_mutex_t *) mutex->backend))
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
return -1;
objc_free (mutex->backend);
__gthread_objc_mutex_lock (objc_mutex_t mutex)
{
if (__gthread_active_p ())
- return pthread_mutex_lock ((pthread_mutex_t *) mutex->backend);
+ return __gthrw_(pthread_mutex_lock) ((pthread_mutex_t *) mutex->backend);
else
return 0;
}
__gthread_objc_mutex_trylock (objc_mutex_t mutex)
{
if (__gthread_active_p ()
- && pthread_mutex_trylock ((pthread_mutex_t *) mutex->backend) != 1)
+ && __gthrw_(pthread_mutex_trylock) ((pthread_mutex_t *) mutex->backend) != 1)
return -1;
return 0;
__gthread_objc_mutex_unlock (objc_mutex_t mutex)
{
if (__gthread_active_p ())
- return pthread_mutex_unlock ((pthread_mutex_t *) mutex->backend);
+ return __gthrw_(pthread_mutex_unlock) ((pthread_mutex_t *) mutex->backend);
else
return 0;
}
/* Allocate a condition. */
static inline int
-__gthread_objc_condition_allocate (objc_condition_t condition)
+__gthread_objc_condition_allocate (objc_condition_t condition
+ __attribute__ ((__unused__)))
{
if (__gthread_active_p ())
/* Unimplemented. */
/* Deallocate a condition. */
static inline int
-__gthread_objc_condition_deallocate (objc_condition_t condition)
+__gthread_objc_condition_deallocate (objc_condition_t condition
+ __attribute__ ((__unused__)))
{
if (__gthread_active_p ())
/* Unimplemented. */
/* Wait on the condition */
static inline int
-__gthread_objc_condition_wait (objc_condition_t condition, objc_mutex_t mutex)
+__gthread_objc_condition_wait (objc_condition_t condition
+ __attribute__ ((__unused__)),
+ objc_mutex_t mutex __attribute__ ((__unused__)))
{
if (__gthread_active_p ())
/* Unimplemented. */
/* Wake up all threads waiting on this condition. */
static inline int
-__gthread_objc_condition_broadcast (objc_condition_t condition)
+__gthread_objc_condition_broadcast (objc_condition_t condition
+ __attribute__ ((__unused__)))
{
if (__gthread_active_p ())
/* Unimplemented. */
/* Wake up one thread waiting on this condition. */
static inline int
-__gthread_objc_condition_signal (objc_condition_t condition)
+__gthread_objc_condition_signal (objc_condition_t condition
+ __attribute__ ((__unused__)))
{
if (__gthread_active_p ())
/* Unimplemented. */
#else /* _LIBOBJC */
static inline int
-__gthread_once (__gthread_once_t *once, void (*func) (void))
+__gthread_once (__gthread_once_t *__once, void (*__func) (void))
{
if (__gthread_active_p ())
- return pthread_once (once, func);
+ return __gthrw_(pthread_once) (__once, __func);
else
return -1;
}
static inline int
-__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
+__gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
{
- return pthread_keycreate (key, dtor);
+ return __gthrw_(pthread_keycreate) (__key, __dtor);
}
static inline int
-__gthread_key_delete (UNUSED (__gthread_key_t key))
+__gthread_key_delete (__gthread_key_t __key __attribute__ ((__unused__)))
{
/* Operation is not supported. */
return -1;
}
static inline void *
-__gthread_getspecific (__gthread_key_t key)
+__gthread_getspecific (__gthread_key_t __key)
{
- void *ptr;
- if (pthread_getspecific (key, &ptr) == 0)
- return ptr;
+ void *__ptr;
+ if (__gthrw_(pthread_getspecific) (__key, &__ptr) == 0)
+ return __ptr;
else
return 0;
}
static inline int
-__gthread_setspecific (__gthread_key_t key, const void *ptr)
+__gthread_setspecific (__gthread_key_t __key, const void *__ptr)
{
- return pthread_setspecific (key, (void *) ptr);
+ return __gthrw_(pthread_setspecific)
+ (__key, CONST_CAST2(void *, const void *, __ptr));
}
static inline void
-__gthread_mutex_init_function (__gthread_mutex_t *mutex)
+__gthread_mutex_init_function (__gthread_mutex_t *__mutex)
+{
+ if (__gthread_active_p ())
+ __gthrw_(pthread_mutex_init) (__mutex, pthread_mutexattr_default);
+}
+
+static inline int
+__gthread_mutx_destroy (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- pthread_mutex_init (mutex, pthread_mutexattr_default);
+ return __gthrw_(pthread_mutex_destroy) (__mutex);
+ else
+ return 0;
}
static inline int
-__gthread_mutex_lock (__gthread_mutex_t *mutex)
+__gthread_mutex_lock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- return pthread_mutex_lock (mutex);
+ return __gthrw_(pthread_mutex_lock) (__mutex);
else
return 0;
}
static inline int
-__gthread_mutex_trylock (__gthread_mutex_t *mutex)
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- return pthread_mutex_trylock (mutex);
+ return __gthrw_(pthread_mutex_trylock) (__mutex);
else
return 0;
}
static inline int
-__gthread_mutex_unlock (__gthread_mutex_t *mutex)
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex)
{
if (__gthread_active_p ())
- return pthread_mutex_unlock (mutex);
+ return __gthrw_(pthread_mutex_unlock) (__mutex);
else
return 0;
}
static inline int
-__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *__mutex)
{
if (__gthread_active_p ())
{
- pthread_mutexattr_t attr;
- int r;
-
- r = pthread_mutexattr_create (&attr);
- if (!r)
- r = pthread_mutexattr_setkind_np (&attr, MUTEX_RECURSIVE_NP);
- if (!r)
- r = pthread_mutex_init (mutex, attr);
- if (!r)
- r = pthread_mutexattr_delete (&attr);
- return r;
+ pthread_mutexattr_t __attr;
+ int __r;
+
+ __r = __gthrw_(pthread_mutexattr_create) (&__attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_setkind_np) (&__attr,
+ MUTEX_RECURSIVE_NP);
+ if (!__r)
+ __r = __gthrw_(pthread_mutex_init) (__mutex, __attr);
+ if (!__r)
+ __r = __gthrw_(pthread_mutexattr_delete) (&__attr);
+ return __r;
}
+ return 0;
}
static inline int
-__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
{
- return __gthread_mutex_lock (mutex);
+ return __gthread_mutex_lock (__mutex);
}
static inline int
-__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
{
- return __gthread_mutex_trylock (mutex);
+ return __gthread_mutex_trylock (__mutex);
}
static inline int
-__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
{
- return __gthread_mutex_unlock (mutex);
+ return __gthread_mutex_unlock (__mutex);
}
#endif /* _LIBOBJC */
-#undef UNUSED
-
#endif
#endif /* ! GCC_GTHR_DCE_H */
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