-/* 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, 2008, 2009
+ 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 3, 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. */
+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 __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_key_t;
+typedef int __gthread_once_t;
typedef int __gthread_mutex_t;
+typedef int __gthread_recursive_mutex_t;
+#define __GTHREAD_ONCE_INIT 0
#define __GTHREAD_MUTEX_INIT 0
+#define __GTHREAD_RECURSIVE_MUTEX_INIT 0
+
+#define UNUSED __attribute__((unused))
+
+#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 * arg UNUSED)
+{
+ /* No thread support available */
+ return NULL;
+}
+
+/* Set the current thread's priority. */
+static inline int
+__gthread_objc_thread_set_priority (int priority UNUSED)
+{
+ /* 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 mutex UNUSED)
+{
+ return 0;
+}
+
+/* Deallocate a mutex. */
+static inline int
+__gthread_objc_mutex_deallocate (objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Grab a lock on a mutex. */
+static inline int
+__gthread_objc_mutex_lock (objc_mutex_t mutex UNUSED)
+{
+ /* 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 mutex UNUSED)
+{
+ /* 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 mutex UNUSED)
+{
+ return 0;
+}
+
+/* Backend condition mutex functions */
+
+/* Allocate a condition. */
+static inline int
+__gthread_objc_condition_allocate (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Deallocate a condition. */
+static inline int
+__gthread_objc_condition_deallocate (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Wait on the condition */
+static inline int
+__gthread_objc_condition_wait (objc_condition_t condition UNUSED,
+ objc_mutex_t mutex UNUSED)
+{
+ return 0;
+}
+
+/* Wake up all threads waiting on this condition. */
+static inline int
+__gthread_objc_condition_broadcast (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+/* Wake up one thread waiting on this condition. */
+static inline int
+__gthread_objc_condition_signal (objc_condition_t condition UNUSED)
+{
+ return 0;
+}
+
+#else /* _LIBOBJC */
static inline int
__gthread_active_p (void)
return 0;
}
+static inline int
+__gthread_once (__gthread_once_t *__once UNUSED, void (*__func) (void) UNUSED)
+{
+ return 0;
+}
+
+static inline int UNUSED
+__gthread_key_create (__gthread_key_t *__key UNUSED, void (*__func) (void *) UNUSED)
+{
+ return 0;
+}
+
+static int UNUSED
+__gthread_key_delete (__gthread_key_t __key UNUSED)
+{
+ return 0;
+}
+
+static inline void *
+__gthread_getspecific (__gthread_key_t __key UNUSED)
+{
+ return 0;
+}
+
+static inline int
+__gthread_setspecific (__gthread_key_t __key UNUSED, const void *__v UNUSED)
+{
+ return 0;
+}
+
static inline int
-__gthread_mutex_lock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_destroy (__gthread_mutex_t *__mutex UNUSED)
{
return 0;
}
static inline int
-__gthread_mutex_trylock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_lock (__gthread_mutex_t *__mutex UNUSED)
{
return 0;
}
static inline int
-__gthread_mutex_unlock (__gthread_mutex_t *mutex __attribute__ ((__unused__)))
+__gthread_mutex_trylock (__gthread_mutex_t *__mutex UNUSED)
{
return 0;
}
-#endif /* not __gthr_single_h */
+static inline int
+__gthread_mutex_unlock (__gthread_mutex_t *__mutex UNUSED)
+{
+ 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 */
+
+#undef UNUSED
+
+#endif /* ! GCC_GTHR_SINGLE_H */