/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */
|
/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */
|
/* Compile this one with gcc. */
|
/* Compile this one with gcc. */
|
/* Copyright (C) 1997, 1999, 2000, 2008, 2009 Free Software Foundation, Inc.
|
/* Copyright (C) 1997, 1999, 2000, 2008, 2009 Free Software Foundation, Inc.
|
Contributed by Mike Stump <mrs@wrs.com>.
|
Contributed by Mike Stump <mrs@wrs.com>.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
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
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
|
Software Foundation; either version 3, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
Under Section 7 of GPL version 3, you are granted additional
|
permissions described in the GCC Runtime Library Exception, version
|
permissions described in the GCC Runtime Library Exception, version
|
3.1, as published by the Free Software Foundation.
|
3.1, as published by the Free Software Foundation.
|
|
|
You should have received a copy of the GNU General Public License and
|
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;
|
a copy of the GCC Runtime Library Exception along with this program;
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#ifndef GCC_GTHR_VXWORKS_H
|
#ifndef GCC_GTHR_VXWORKS_H
|
#define GCC_GTHR_VXWORKS_H
|
#define GCC_GTHR_VXWORKS_H
|
|
|
#ifdef _LIBOBJC
|
#ifdef _LIBOBJC
|
|
|
/* libobjc requires the optional pthreads component. */
|
/* libobjc requires the optional pthreads component. */
|
#include "gthr-posix.h"
|
#include "gthr-posix.h"
|
|
|
#else
|
#else
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
#define UNUSED(x)
|
#define UNUSED(x)
|
#else
|
#else
|
#define UNUSED(x) x __attribute__((unused))
|
#define UNUSED(x) x __attribute__((unused))
|
#endif
|
#endif
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
extern "C" {
|
extern "C" {
|
#endif
|
#endif
|
|
|
#define __GTHREADS 1
|
#define __GTHREADS 1
|
#define __gthread_active_p() 1
|
#define __gthread_active_p() 1
|
|
|
/* Mutexes are easy, except that they need to be initialized at runtime. */
|
/* Mutexes are easy, except that they need to be initialized at runtime. */
|
|
|
#include <semLib.h>
|
#include <semLib.h>
|
|
|
typedef SEM_ID __gthread_mutex_t;
|
typedef SEM_ID __gthread_mutex_t;
|
/* All VxWorks mutexes are recursive. */
|
/* All VxWorks mutexes are recursive. */
|
typedef SEM_ID __gthread_recursive_mutex_t;
|
typedef SEM_ID __gthread_recursive_mutex_t;
|
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
|
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
|
|
|
static inline void
|
static inline void
|
__gthread_mutex_init_function (__gthread_mutex_t *mutex)
|
__gthread_mutex_init_function (__gthread_mutex_t *mutex)
|
{
|
{
|
*mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
|
*mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
|
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
|
{
|
{
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
{
|
{
|
return semTake (*mutex, WAIT_FOREVER);
|
return semTake (*mutex, WAIT_FOREVER);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
{
|
{
|
return semTake (*mutex, NO_WAIT);
|
return semTake (*mutex, NO_WAIT);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
{
|
{
|
return semGive (*mutex);
|
return semGive (*mutex);
|
}
|
}
|
|
|
static inline void
|
static inline void
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
__gthread_mutex_init_function (mutex);
|
__gthread_mutex_init_function (mutex);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
return __gthread_mutex_lock (mutex);
|
return __gthread_mutex_lock (mutex);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
return __gthread_mutex_trylock (mutex);
|
return __gthread_mutex_trylock (mutex);
|
}
|
}
|
|
|
static inline int
|
static inline int
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
|
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
|
{
|
{
|
return __gthread_mutex_unlock (mutex);
|
return __gthread_mutex_unlock (mutex);
|
}
|
}
|
|
|
/* pthread_once is complicated enough that it's implemented
|
/* pthread_once is complicated enough that it's implemented
|
out-of-line. See config/vxlib.c. */
|
out-of-line. See config/vxlib.c. */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
#if !defined(__RTP__)
|
#if !defined(__RTP__)
|
#if defined(__PPC__)
|
#if defined(__PPC__)
|
__attribute ((aligned (__alignof (unsigned))))
|
__attribute ((aligned (__alignof (unsigned))))
|
#endif
|
#endif
|
volatile unsigned char busy;
|
volatile unsigned char busy;
|
#endif
|
#endif
|
volatile unsigned char done;
|
volatile unsigned char done;
|
#if !defined(__RTP__) && defined(__PPC__)
|
#if !defined(__RTP__) && defined(__PPC__)
|
/* PPC's test-and-set implementation requires a 4 byte aligned
|
/* PPC's test-and-set implementation requires a 4 byte aligned
|
object, of which it only sets the first byte. We use padding
|
object, of which it only sets the first byte. We use padding
|
here, in order to maintain some amount of backwards
|
here, in order to maintain some amount of backwards
|
compatibility. Without this padding, gthread_once objects worked
|
compatibility. Without this padding, gthread_once objects worked
|
by accident because they happen to be static objects and the ppc
|
by accident because they happen to be static objects and the ppc
|
port automatically increased their alignment to 4 bytes. */
|
port automatically increased their alignment to 4 bytes. */
|
unsigned char pad1;
|
unsigned char pad1;
|
unsigned char pad2;
|
unsigned char pad2;
|
#endif
|
#endif
|
}
|
}
|
__gthread_once_t;
|
__gthread_once_t;
|
|
|
#if defined (__RTP__)
|
#if defined (__RTP__)
|
# define __GTHREAD_ONCE_INIT { 0 }
|
# define __GTHREAD_ONCE_INIT { 0 }
|
#elif defined (__PPC__)
|
#elif defined (__PPC__)
|
# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
|
# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
|
#else
|
#else
|
# define __GTHREAD_ONCE_INIT { 0, 0 }
|
# define __GTHREAD_ONCE_INIT { 0, 0 }
|
#endif
|
#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
|
/* 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
|
is not really set up for it. See config/vxlib.c for the gory
|
details. All the TSD routines are sufficiently complex that they
|
details. All the TSD routines are sufficiently complex that they
|
need to be implemented out of line. */
|
need to be implemented out of line. */
|
|
|
typedef unsigned int __gthread_key_t;
|
typedef unsigned int __gthread_key_t;
|
|
|
extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *));
|
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_delete (__gthread_key_t __key);
|
|
|
extern void *__gthread_getspecific (__gthread_key_t __key);
|
extern void *__gthread_getspecific (__gthread_key_t __key);
|
extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr);
|
extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr);
|
|
|
#undef UNUSED
|
#undef UNUSED
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
}
|
}
|
#endif
|
#endif
|
|
|
#endif /* not _LIBOBJC */
|
#endif /* not _LIBOBJC */
|
|
|
#endif /* gthr-vxworks.h */
|
#endif /* gthr-vxworks.h */
|
|
|
