gthr-rtems.h revision 110611 
1/* RTEMS threads compatibily routines for libgcc2 and libobjc.
2   by: Rosimildo da Silva( rdasilva@connecttel.com ) */
3/* Compile this one with gcc.  */
4/* Copyright (C) 1997, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 2, or (at your option) any later
11version.
12
13GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING.  If not, write to the Free
20Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2102111-1307, USA.  */
22
23/* As a special exception, if you link this library with other files,
24   some of which are compiled with GCC, to produce an executable,
25   this library does not by itself cause the resulting executable
26   to be covered by the GNU General Public License.
27   This exception does not however invalidate any other reasons why
28   the executable file might be covered by the GNU General Public License.  */
29
30#ifndef GCC_GTHR_RTEMS_H
31#define GCC_GTHR_RTEMS_H
32
33#ifdef __cplusplus
34extern "C" {
35#endif
36
37#define __GTHREADS 1
38
39#define __GTHREAD_ONCE_INIT  0
40#define __GTHREAD_MUTEX_INIT 0
41#define __GTHREAD_MUTEX_INIT_FUNCTION  rtems_gxx_mutex_init
42
43/* avoid depedency on rtems specific headers */
44typedef void *__gthread_key_t;
45typedef int   __gthread_once_t;
46typedef void *__gthread_mutex_t;
47
48/*
49 * External functions provided by RTEMS. They are very similar to their POSIX
50 * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS
51 * header files.
52 */
53
54/* generic per task variables */
55extern int rtems_gxx_once (__gthread_once_t *once, void (*func) (void));
56extern int rtems_gxx_key_create (__gthread_key_t *key, void (*dtor) (void *));
57extern int rtems_gxx_key_dtor (__gthread_key_t key, void *ptr);
58extern int rtems_gxx_key_delete (__gthread_key_t key);
59extern void *rtems_gxx_getspecific (__gthread_key_t key);
60extern int rtems_gxx_setspecific (__gthread_key_t key, const void *ptr);
61
62/* mutex support */
63extern void rtems_gxx_mutex_init (__gthread_mutex_t *mutex);
64extern int rtems_gxx_mutex_lock (__gthread_mutex_t *mutex);
65extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *mutex);
66extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *mutex);
67
68
69/* RTEMS threading is always active */
70static inline int
71__gthread_active_p (void)
72{
73  return 1;
74}
75
76/* Wrapper calls */
77static inline int
78__gthread_once (__gthread_once_t *once, void (*func) (void))
79{
80   return rtems_gxx_once( once, func );
81}
82
83static inline int
84__gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
85{
86  return rtems_gxx_key_create( key, dtor );
87}
88
89static inline int
90__gthread_key_dtor (__gthread_key_t key, void *ptr)
91{
92   return rtems_gxx_key_dtor(key, ptr);
93}
94
95static inline int
96__gthread_key_delete (__gthread_key_t key)
97{
98  return rtems_gxx_key_delete (key);
99}
100
101static inline void *
102__gthread_getspecific (__gthread_key_t key)
103{
104  return rtems_gxx_getspecific (key);
105}
106
107static inline int
108__gthread_setspecific (__gthread_key_t key, const void *ptr)
109{
110  return rtems_gxx_setspecific (key, ptr);
111}
112
113static inline int
114__gthread_mutex_lock (__gthread_mutex_t *mutex)
115{
116    return rtems_gxx_mutex_lock (mutex);
117}
118
119static inline int
120__gthread_mutex_trylock (__gthread_mutex_t *mutex)
121{
122    return rtems_gxx_mutex_trylock (mutex);
123}
124
125static inline int
126__gthread_mutex_unlock (__gthread_mutex_t *mutex)
127{
128    return rtems_gxx_mutex_unlock( mutex );
129}
130
131#ifdef __cplusplus
132}
133#endif
134
135#endif /* ! GCC_GTHR_RTEMS_H */
136