-
+/* Threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2001, 2004, 2005
+ Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 version.
+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
+version.
-GNU CC 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.
+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.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
/* As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License. */
-#ifndef __gthr_dce_h
-#define __gthr_dce_h
+#ifndef GCC_GTHR_DCE_H
+#define GCC_GTHR_DCE_H
+/* If _DCE_THREADS is not defined, then we're building the single
+ threaded version of the libraries and do not want to reference
+ anything related to pthreads or dce. */
+#ifndef _DCE_THREADS
+#include "gthr-single.h"
+#else
/* DCE threads interface.
DCE threads are based on POSIX threads draft 4, and many things
- have changed since then. */
+ have changed since then. */
#define __GTHREADS 1
typedef pthread_key_t __gthread_key_t;
typedef pthread_once_t __gthread_once_t;
typedef pthread_mutex_t __gthread_mutex_t;
+typedef pthread_mutex_t __gthread_recursive_mutex_t;
#define __GTHREAD_ONCE_INIT pthread_once_init
-/* Howto define __GTHREAD_MUTEX_INIT? */
-#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
+#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
-#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
+#define __GTHREAD_MUTEX_INIT_DEFAULT pthread_once_init
-#pragma weak pthread_mutex_lock
-#pragma weak pthread_mutex_trylock
-#pragma weak pthread_mutex_unlock
+#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(pthread_once)
+__gthrw(pthread_keycreate)
+__gthrw(pthread_getspecific)
+__gthrw(pthread_setspecific)
+__gthrw(pthread_create)
+__gthrw(pthread_mutex_init)
+__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_init
-#pragma weak pthread_mutex_destroy
-#pragma weak pthread_self
-#pragma weak pthread_yield
+/* Objective-C. */
+__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
-static void *__gthread_active_ptr = &pthread_create;
+#if SUPPORTS_WEAK && GTHREAD_USE_WEAK
static inline int
__gthread_active_p (void)
{
+ static void *const __gthread_active_ptr = (void *) &__gthrw_(pthread_create);
return __gthread_active_ptr != 0;
}
/* Backend initialization functions */
-/* Initialize the threads subsystem. */
+/* Initialize the threads subsystem. */
static inline int
-__gthread_objc_init_thread_system(void)
+__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;
}
-/* Close the threads subsystem. */
+/* Close the threads subsystem. */
static inline int
-__gthread_objc_close_thread_system(void)
+__gthread_objc_close_thread_system (void)
{
if (__gthread_active_p ())
return 0;
/* Backend thread functions */
-/* Create a new thread of execution. */
+/* Create a new thread of execution. */
static inline objc_thread_t
-__gthread_objc_thread_detach(void (*func)(void *), void *arg)
+__gthread_objc_thread_detach (void (*func)(void *), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
if (!__gthread_active_p ())
return NULL;
-
- if ( !(pthread_create(&new_thread_handle, pthread_attr_default,
- (void *)func, arg)) )
+
+ if (!(__gthrw_(pthread_create) (&new_thread_handle, pthread_attr_default,
+ (void *) func, arg)))
{
/* ??? May not work! (64bit) */
- thread_id = *(objc_thread_t *)&new_thread_handle;
- pthread_detach(&new_thread_handle); /* Fully detach thread. */
+ thread_id = *(objc_thread_t *) &new_thread_handle;
+ pthread_detach (&new_thread_handle); /* Fully detach thread. */
}
else
thread_id = NULL;
-
+
return thread_id;
}
-/* Set the current thread's priority. */
+/* Set the current thread's priority. */
static inline int
-__gthread_objc_thread_set_priority(int priority)
+__gthread_objc_thread_set_priority (int priority)
{
int sys_priority = 0;
sys_priority = (PRI_BG_MIN_NP + PRI_BG_MAX_NP) / 2;
break;
}
-
- /* Change the priority. */
- if (pthread_setprio(pthread_self(), sys_priority) >= 0)
+
+ /* Change the priority. */
+ if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0)
return 0;
else
/* Failed */
return -1;
}
-/* Return the current thread's priority. */
+/* Return the current thread's priority. */
static inline int
-__gthread_objc_thread_get_priority(void)
+__gthread_objc_thread_get_priority (void)
{
int sys_priority;
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)
return OBJC_THREAD_INTERACTIVE_PRIORITY;
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}
-/* Yield our process time to another thread. */
+/* Yield our process time to another thread. */
static inline void
-__gthread_objc_thread_yield(void)
+__gthread_objc_thread_yield (void)
{
if (__gthread_active_p ())
- pthread_yield();
+ __gthrw_(pthread_yield) ();
}
-/* Terminate the current thread. */
+/* Terminate the current thread. */
static inline int
-__gthread_objc_thread_exit(void)
+__gthread_objc_thread_exit (void)
{
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;
}
-/* Returns an integer value which uniquely describes a thread. */
+/* Returns an integer value which uniquely describes a thread. */
static inline objc_thread_t
-__gthread_objc_thread_id(void)
+__gthread_objc_thread_id (void)
{
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;
+ return (objc_thread_t) 1;
}
-/* Sets the thread's local storage pointer. */
+/* Sets the thread's local storage pointer. */
static inline int
-__gthread_objc_thread_set_data(void *value)
+__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;
}
}
-/* Returns the thread's local storage pointer. */
+/* Returns the thread's local storage pointer. */
static inline void *
-__gthread_objc_thread_get_data(void)
+__gthread_objc_thread_get_data (void)
{
void *value = NULL;
if (__gthread_active_p ())
{
- if ( !(pthread_getspecific(_objc_thread_storage, &value)) )
+ if (!(__gthrw_(pthread_getspecific) (_objc_thread_storage, &value)))
return value;
return NULL;
/* Backend mutex functions */
-/* Allocate a mutex. */
+/* Allocate a mutex. */
static inline int
-__gthread_objc_mutex_allocate(objc_mutex_t mutex)
+__gthread_objc_mutex_allocate (objc_mutex_t mutex)
{
- if (__gthread_active_p ()
- && pthread_mutex_init((pthread_mutex_t *)mutex->backend,
- pthread_mutexattr_default))
- return -1;
+ if (__gthread_active_p ())
+ {
+ mutex->backend = objc_malloc (sizeof (pthread_mutex_t));
+
+ if (__gthrw_(pthread_mutex_init) ((pthread_mutex_t *) mutex->backend,
+ pthread_mutexattr_default))
+ {
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ return -1;
+ }
+ }
return 0;
}
-/* Deallocate a mutex. */
+/* Deallocate a mutex. */
static inline int
-__gthread_objc_mutex_deallocate(objc_mutex_t mutex)
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
- if (__gthread_active_p ()
- && pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
- return -1;
+ if (__gthread_active_p ())
+ {
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
+ return -1;
+
+ objc_free (mutex->backend);
+ mutex->backend = NULL;
+ }
return 0;
}
-/* Grab a lock on a mutex. */
+/* Grab a lock on a mutex. */
static inline int
-__gthread_objc_mutex_lock(objc_mutex_t mutex)
+__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;
}
-/* Try to grab a lock on a mutex. */
+/* Try to grab a lock on a mutex. */
static inline int
-__gthread_objc_mutex_trylock(objc_mutex_t mutex)
+__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;
/* Unlock the mutex */
static inline int
-__gthread_objc_mutex_unlock(objc_mutex_t mutex)
+__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;
}
/* Backend condition mutex functions */
-/* Allocate a condition. */
+/* 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. */
+ /* Unimplemented. */
return -1;
else
return 0;
}
-/* Deallocate a condition. */
+/* 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. */
+ /* Unimplemented. */
return -1;
else
return 0;
/* 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. */
+ /* Unimplemented. */
return -1;
else
return 0;
}
-/* Wake up all threads waiting on this condition. */
+/* 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. */
+ /* Unimplemented. */
return -1;
else
return 0;
}
-/* Wake up one thread waiting on this condition. */
+/* 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. */
+ /* Unimplemented. */
return -1;
else
return 0;
__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 *))
{
- return pthread_keycreate (key, dtor);
-}
-
-static inline int
-__gthread_key_dtor (__gthread_key_t key, void *ptr)
-{
- /* Nothing needed. */
- return 0;
+ return __gthrw_(pthread_keycreate) (key, dtor);
}
static inline int
-__gthread_key_delete (__gthread_key_t key)
+__gthread_key_delete (__gthread_key_t key __attribute__ ((__unused__)))
{
- return pthread_key_delete (key);
+ /* Operation is not supported. */
+ return -1;
}
static inline void *
__gthread_getspecific (__gthread_key_t key)
{
void *ptr;
- if (pthread_getspecific (key, &ptr) == 0)
+ if (__gthrw_(pthread_getspecific) (key, &ptr) == 0)
return ptr;
else
return 0;
static inline int
__gthread_setspecific (__gthread_key_t key, const void *ptr)
{
- return pthread_setspecific (key, (void *) ptr);
+ return __gthrw_(pthread_setspecific) (key, (void *) ptr);
+}
+
+static inline void
+__gthread_mutex_init_function (__gthread_mutex_t *mutex)
+{
+ if (__gthread_active_p ())
+ __gthrw_(pthread_mutex_init) (mutex, pthread_mutexattr_default);
}
static inline int
__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;
}
__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;
}
__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)
+{
+ if (__gthread_active_p ())
+ {
+ 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)
+{
+ return __gthread_mutex_lock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_trylock (mutex);
+}
+
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_unlock (mutex);
+}
+
#endif /* _LIBOBJC */
-#endif /* not __gthr_dce_h */
+#endif
+#endif /* ! GCC_GTHR_DCE_H */