mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/* Threads compatibility routines for libgcc2 and libobjc for VxWorks. */
|
|
/* Compile this one with gcc. */
|
|
/* Copyright (C) 1997, 1999, 2000 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
|
|
version.
|
|
|
|
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 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 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. */
|
|
|
|
#ifndef GCC_GTHR_VXWORKS_H
|
|
#define GCC_GTHR_VXWORKS_H
|
|
|
|
#ifdef _LIBOBJC
|
|
|
|
/* libobjc requires the optional pthreads component. */
|
|
#include "gthr-posix.h"
|
|
|
|
#else
|
|
|
|
#define __GTHREADS 1
|
|
#define __gthread_active_p() 1
|
|
|
|
/* Mutexes are easy, except that they need to be initialized at runtime. */
|
|
|
|
#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)
|
|
{
|
|
*mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_lock (__gthread_mutex_t *mutex)
|
|
{
|
|
return semTake (*mutex, WAIT_FOREVER);
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
|
|
{
|
|
return semTake (*mutex, NO_WAIT);
|
|
}
|
|
|
|
static inline int
|
|
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
|
|
{
|
|
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
|
|
{
|
|
volatile unsigned char busy;
|
|
volatile unsigned char done;
|
|
}
|
|
__gthread_once_t;
|
|
|
|
#define __GTHREAD_ONCE_INIT { 0, 0 }
|
|
|
|
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
|
|
details. All the TSD routines are sufficiently complex that they
|
|
need to be implemented out of line. */
|
|
|
|
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 void *__gthread_getspecific (__gthread_key_t key);
|
|
extern int __gthread_setspecific (__gthread_key_t key, void *ptr);
|
|
|
|
#endif /* not _LIBOBJC */
|
|
|
|
#endif /* gthr-vxworks.h */
|