-/* Threads compatibility routines for libgcc2. */
+/* Threads compatibility routines for libgcc2 and libobjc. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2004 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_single_h
-#define __gthr_single_h
+#ifndef GCC_GTHR_SINGLE_H
+#define GCC_GTHR_SINGLE_H
-/* Just provide compatibility for mutex handling. */
+/* Just provide compatibility for mutex handling. */
typedef int __gthread_mutex_t;
+typedef int __gthread_recursive_mutex_t;
#define __GTHREAD_MUTEX_INIT 0
+#ifdef __cplusplus
+#define UNUSED(x)
+#else
+#define UNUSED(x) x __attribute__((unused))
+#endif
+
+#ifdef _LIBOBJC
+
+/* Thread local storage for a single thread */
+static void *thread_local_storage = NULL;
+
+/* Backend initialization functions */
+
+/* Initialize the threads subsystem. */
+static inline int
+__gthread_objc_init_thread_system (void)
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Close the threads subsystem. */
+static inline int
+__gthread_objc_close_thread_system (void)
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Backend thread functions */
+
+/* Create a new thread of execution. */
+static inline objc_thread_t
+__gthread_objc_thread_detach (void (* func)(void *), void * UNUSED(arg))
+{
+ /* No thread support available */
+ return NULL;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int UNUSED(priority))
+{
+ /* No thread support available */
+ return -1;
+}
+
+/* Return the current thread's priority. */
+static inline int
+__gthread_objc_thread_get_priority (void)
+{
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+}
+
+/* Yield our process time to another thread. */
+static inline void
+__gthread_objc_thread_yield (void)
+{
+ return;
+}
+
+/* Terminate the current thread. */
+static inline int
+__gthread_objc_thread_exit (void)
+{
+ /* No thread support available */
+ /* Should we really exit the program */
+ /* exit (&__objc_thread_exit_status); */
+ return -1;
+}
+
+/* Returns an integer value which uniquely describes a thread. */
+static inline objc_thread_t
+__gthread_objc_thread_id (void)
+{
+ /* No thread support, use 1. */
+ return (objc_thread_t) 1;
+}
+
+/* Sets the thread's local storage pointer. */
+static inline int
+__gthread_objc_thread_set_data (void *value)
+{
+ thread_local_storage = value;
+ return 0;
+}
+
+/* Returns the thread's local storage pointer. */
+static inline void *
+__gthread_objc_thread_get_data (void)
+{
+ return thread_local_storage;
+}
+
+/* Backend mutex functions */
+
+/* Allocate a mutex. */
+static inline int
+__gthread_objc_mutex_allocate (objc_mutex_t UNUSED(mutex))
+{
+ return 0;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t UNUSED(mutex))
+{
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t UNUSED(mutex))
+{
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+}
+
+/* Try to grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_trylock (objc_mutex_t UNUSED(mutex))
+{
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+}
+
+/* Unlock the mutex */
+static inline int
+__gthread_objc_mutex_unlock (objc_mutex_t UNUSED(mutex))
+{
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t UNUSED(condition))
+{
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t UNUSED(condition))
+{
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t UNUSED(condition),
+ objc_mutex_t UNUSED(mutex))
+{
+ return 0;
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t UNUSED(condition))
+{
+ return 0;
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t UNUSED(condition))
+{
+ return 0;
+}
+
+#else /* _LIBOBJC */
+
static inline int
__gthread_active_p (void)
{
}
static inline int
-__gthread_mutex_lock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
+{
+ return 0;
+}
+
+static inline int
+__gthread_mutex_lock (__gthread_mutex_t * UNUSED(mutex))
{
return 0;
}
static inline int
-__gthread_mutex_trylock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_trylock (__gthread_mutex_t * UNUSED(mutex))
{
return 0;
}
static inline int
-__gthread_mutex_unlock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_unlock (__gthread_mutex_t * UNUSED(mutex))
{
return 0;
}
-#endif /* not __gthr_single_h */
+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 */
+
+#undef UNUSED
+
+#endif /* ! GCC_GTHR_SINGLE_H */
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