OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [gthr-vxworks.h] - Blame information for rev 280

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 280 jeremybenn
/* Threads compatibility routines for libgcc2 and libobjc for VxWorks.  */
2
/* Compile this one with gcc.  */
3
/* Copyright (C) 1997, 1999, 2000, 2008, 2009 Free Software Foundation, Inc.
4
   Contributed by Mike Stump <mrs@wrs.com>.
5
 
6
This file is part of GCC.
7
 
8
GCC is free software; you can redistribute it and/or modify it under
9
the terms of the GNU General Public License as published by the Free
10
Software Foundation; either version 3, or (at your option) any later
11
version.
12
 
13
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14
WARRANTY; without even the implied warranty of MERCHANTABILITY or
15
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16
for more details.
17
 
18
Under Section 7 of GPL version 3, you are granted additional
19
permissions described in the GCC Runtime Library Exception, version
20
3.1, as published by the Free Software Foundation.
21
 
22
You should have received a copy of the GNU General Public License and
23
a copy of the GCC Runtime Library Exception along with this program;
24
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
25
<http://www.gnu.org/licenses/>.  */
26
 
27
#ifndef GCC_GTHR_VXWORKS_H
28
#define GCC_GTHR_VXWORKS_H
29
 
30
#ifdef _LIBOBJC
31
 
32
/* libobjc requires the optional pthreads component.  */
33
#include "gthr-posix.h"
34
 
35
#else
36
#ifdef __cplusplus
37
#define UNUSED(x)
38
#else
39
#define UNUSED(x) x __attribute__((unused))
40
#endif
41
 
42
#ifdef __cplusplus
43
extern "C" {
44
#endif
45
 
46
#define __GTHREADS 1
47
#define __gthread_active_p() 1
48
 
49
/* Mutexes are easy, except that they need to be initialized at runtime.  */
50
 
51
#include <semLib.h>
52
 
53
typedef SEM_ID __gthread_mutex_t;
54
/* All VxWorks mutexes are recursive.  */
55
typedef SEM_ID __gthread_recursive_mutex_t;
56
#define __GTHREAD_MUTEX_INIT_FUNCTION __gthread_mutex_init_function
57
#define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION __gthread_recursive_mutex_init_function
58
 
59
static inline void
60
__gthread_mutex_init_function (__gthread_mutex_t *mutex)
61
{
62
  *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
63
}
64
 
65
static inline int
66
__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
67
{
68
  return 0;
69
}
70
 
71
static inline int
72
__gthread_mutex_lock (__gthread_mutex_t *mutex)
73
{
74
  return semTake (*mutex, WAIT_FOREVER);
75
}
76
 
77
static inline int
78
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
79
{
80
  return semTake (*mutex, NO_WAIT);
81
}
82
 
83
static inline int
84
__gthread_mutex_unlock (__gthread_mutex_t *mutex)
85
{
86
  return semGive (*mutex);
87
}
88
 
89
static inline void
90
__gthread_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
91
{
92
  __gthread_mutex_init_function (mutex);
93
}
94
 
95
static inline int
96
__gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
97
{
98
  return __gthread_mutex_lock (mutex);
99
}
100
 
101
static inline int
102
__gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
103
{
104
  return __gthread_mutex_trylock (mutex);
105
}
106
 
107
static inline int
108
__gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
109
{
110
  return __gthread_mutex_unlock (mutex);
111
}
112
 
113
/* pthread_once is complicated enough that it's implemented
114
   out-of-line.  See config/vxlib.c.  */
115
 
116
typedef struct
117
{
118
#if !defined(__RTP__)
119
#if defined(__PPC__)
120
  __attribute ((aligned (__alignof (unsigned))))
121
#endif
122
  volatile unsigned char busy;
123
#endif
124
  volatile unsigned char done;
125
#if !defined(__RTP__) && defined(__PPC__)
126
  /* PPC's test-and-set implementation requires a 4 byte aligned
127
     object, of which it only sets the first byte.  We use padding
128
     here, in order to maintain some amount of backwards
129
     compatibility.  Without this padding, gthread_once objects worked
130
     by accident because they happen to be static objects and the ppc
131
     port automatically increased their alignment to 4 bytes.  */
132
  unsigned char pad1;
133
  unsigned char pad2;
134
#endif
135
}
136
__gthread_once_t;
137
 
138
#if defined (__RTP__)
139
# define __GTHREAD_ONCE_INIT { 0 }
140
#elif defined (__PPC__)
141
# define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 }
142
#else
143
# define __GTHREAD_ONCE_INIT { 0, 0 }
144
#endif
145
 
146
extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void));
147
 
148
/* Thread-specific data requires a great deal of effort, since VxWorks
149
   is not really set up for it.  See config/vxlib.c for the gory
150
   details.  All the TSD routines are sufficiently complex that they
151
   need to be implemented out of line.  */
152
 
153
typedef unsigned int __gthread_key_t;
154
 
155
extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *));
156
extern int __gthread_key_delete (__gthread_key_t __key);
157
 
158
extern void *__gthread_getspecific (__gthread_key_t __key);
159
extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr);
160
 
161
#undef UNUSED
162
 
163
#ifdef __cplusplus
164
}
165
#endif
166
 
167
#endif /* not _LIBOBJC */
168
 
169
#endif /* gthr-vxworks.h */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.