/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */
/* Compile this one with gcc. */
-/* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1999, 2000, 2008, 2009 Free Software Foundation, Inc.
Contributed by Mike Stump <mrs@wrs.com>.
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_VXWORKS_H
#define GCC_GTHR_VXWORKS_H
#include "gthr-posix.h"
#else
+#ifdef __cplusplus
+#define UNUSED(x)
+#else
+#define UNUSED(x) x __attribute__((unused))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
#define __GTHREADS 1
#define __gthread_active_p() 1
#include <semLib.h>
typedef SEM_ID __gthread_mutex_t;
+/* All VxWorks mutexes are recursive. */
+typedef SEM_ID __gthread_recursive_mutex_t;
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
+#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
static inline void
__gthread_mutex_init_function (__gthread_mutex_t *mutex)
}
static inline int
+__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
+{
+ return 0;
+}
+
+static inline int
__gthread_mutex_lock (__gthread_mutex_t *mutex)
{
return semTake (*mutex, WAIT_FOREVER);
return semGive (*mutex);
}
+static inline void
+__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
+{
+ __gthread_mutex_init_function (mutex);
+}
+
+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);
+}
+
/* pthread_once is complicated enough that it's implemented
out-of-line. See config/vxlib.c. */
typedef struct
{
+#if !defined(__RTP__)
+#if defined(__PPC__)
+ __attribute ((aligned (__alignof (unsigned))))
+#endif
volatile unsigned char busy;
+#endif
volatile unsigned char done;
+#if !defined(__RTP__) && defined(__PPC__)
+ /* PPC's test-and-set implementation requires a 4 byte aligned
+ object, of which it only sets the first byte. We use padding
+ here, in order to maintain some amount of backwards
+ compatibility. Without this padding, gthread_once objects worked
+ by accident because they happen to be static objects and the ppc
+ port automatically increased their alignment to 4 bytes. */
+ unsigned char pad1;
+ unsigned char pad2;
+#endif
}
__gthread_once_t;
-#define __GTHREAD_ONCE_INIT { 0, 0 }
+#if defined (__RTP__)
+# define __GTHREAD_ONCE_INIT { 0 }
+#elif defined (__PPC__)
+# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
+#else
+# define __GTHREAD_ONCE_INIT { 0, 0 }
+#endif
-extern int __gthread_once (__gthread_once_t *once, void (*func)(void));
+extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void));
/* Thread-specific data requires a great deal of effort, since VxWorks
is not really set up for it. See config/vxlib.c for the gory
typedef unsigned int __gthread_key_t;
-extern int __gthread_key_create (__gthread_key_t *keyp, void (*dtor)(void *));
-extern int __gthread_key_delete (__gthread_key_t key);
+extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *));
+extern int __gthread_key_delete (__gthread_key_t __key);
-extern void *__gthread_getspecific (__gthread_key_t key);
-extern int __gthread_setspecific (__gthread_key_t key, void *ptr);
+extern void *__gthread_getspecific (__gthread_key_t __key);
+extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr);
+
+#undef UNUSED
+
+#ifdef __cplusplus
+}
+#endif
#endif /* not _LIBOBJC */
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