-
+/* 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
+ Free Software Foundation, Inc.
This file is part of GCC.
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. */
+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,
#include <pthread.h>
-#ifdef __cplusplus
-#define UNUSED(x) x
-#else
-#define UNUSED(x) x __attribute__((unused))
-#endif
-
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
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
#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
+__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_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
-static void *__gthread_active_ptr = (void *) &pthread_create;
+__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 *) &__gthrw_(pthread_create);
return __gthread_active_ptr != 0;
}
/* 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. */
static inline int
-__gthread_objc_close_thread_system(void)
+__gthread_objc_close_thread_system (void)
{
if (__gthread_active_p ())
return 0;
/* 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. */
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)
+ if (pthread_setprio (__gthrw_(pthread_self) (), sys_priority) >= 0)
return 0;
else
/* Failed */
/* 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;
/* 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. */
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. */
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. */
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. */
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;
/* 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 ())
{
- mutex->backend = objc_malloc(sizeof(pthread_mutex_t));
-
- if (pthread_mutex_init((pthread_mutex_t *)mutex->backend,
- pthread_mutexattr_default))
- {
- objc_free(mutex->backend);
- mutex->backend = NULL;
- return -1;
- }
+ 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. */
static inline int
-__gthread_objc_mutex_deallocate(objc_mutex_t mutex)
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex)
{
if (__gthread_active_p ())
{
- if (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
- return -1;
+ if (__gthrw_(pthread_mutex_destroy) ((pthread_mutex_t *) mutex->backend))
+ return -1;
- objc_free(mutex->backend);
+ objc_free (mutex->backend);
mutex->backend = NULL;
}
/* 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. */
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;
}
/* 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. */
__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 (UNUSED (__gthread_key_t key), UNUSED (void *ptr))
-{
- /* Nothing needed. */
- return 0;
+ 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;
__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 ())
- pthread_mutex_init (mutex, pthread_mutexattr_default);
+ __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;
}
-#endif /* _LIBOBJC */
+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);
+}
-#undef UNUSED
+static inline int
+__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
+{
+ return __gthread_mutex_unlock (mutex);
+}
+
+#endif /* _LIBOBJC */
#endif
#endif /* ! GCC_GTHR_DCE_H */
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