Mercurial > hg > CbC > CbC_gcc
annotate gcc/gthr-vxworks.h @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Fri, 12 Feb 2010 23:39:51 +0900 |
parents | a06113de4d67 |
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rev | line source |
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0 | 1 /* 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 { | |
55
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118 #if !defined(__RTP__) |
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119 #if defined(__PPC__) |
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120 __attribute ((aligned (__alignof (unsigned)))) |
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121 #endif |
0 | 122 volatile unsigned char busy; |
123 #endif | |
124 volatile unsigned char done; | |
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125 #if !defined(__RTP__) && defined(__PPC__) |
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126 /* PPC's test-and-set implementation requires a 4 byte aligned |
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127 object, of which it only sets the first byte. We use padding |
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128 here, in order to maintain some amount of backwards |
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129 compatibility. Without this padding, gthread_once objects worked |
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130 by accident because they happen to be static objects and the ppc |
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131 port automatically increased their alignment to 4 bytes. */ |
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132 unsigned char pad1; |
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133 unsigned char pad2; |
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134 #endif |
0 | 135 } |
136 __gthread_once_t; | |
137 | |
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138 #if defined (__RTP__) |
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139 # define __GTHREAD_ONCE_INIT { 0 } |
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140 #elif defined (__PPC__) |
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141 # define __GTHREAD_ONCE_INIT { 0, 0, 0, 0 } |
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142 #else |
0 | 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 */ |