Mercurial > hg > CbC > CbC_gcc
comparison gcc/gthr-vxworks.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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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 { | |
118 #ifndef __RTP__ | |
119 volatile unsigned char busy; | |
120 #endif | |
121 volatile unsigned char done; | |
122 } | |
123 __gthread_once_t; | |
124 | |
125 #ifndef __RTP__ | |
126 # define __GTHREAD_ONCE_INIT { 0, 0 } | |
127 #else | |
128 # define __GTHREAD_ONCE_INIT { 0 } | |
129 #endif | |
130 | |
131 extern int __gthread_once (__gthread_once_t *__once, void (*__func)(void)); | |
132 | |
133 /* Thread-specific data requires a great deal of effort, since VxWorks | |
134 is not really set up for it. See config/vxlib.c for the gory | |
135 details. All the TSD routines are sufficiently complex that they | |
136 need to be implemented out of line. */ | |
137 | |
138 typedef unsigned int __gthread_key_t; | |
139 | |
140 extern int __gthread_key_create (__gthread_key_t *__keyp, void (*__dtor)(void *)); | |
141 extern int __gthread_key_delete (__gthread_key_t __key); | |
142 | |
143 extern void *__gthread_getspecific (__gthread_key_t __key); | |
144 extern int __gthread_setspecific (__gthread_key_t __key, void *__ptr); | |
145 | |
146 #undef UNUSED | |
147 | |
148 #ifdef __cplusplus | |
149 } | |
150 #endif | |
151 | |
152 #endif /* not _LIBOBJC */ | |
153 | |
154 #endif /* gthr-vxworks.h */ |