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1 /* RTEMS threads compatibility routines for libgcc2 and libobjc.
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2 by: Rosimildo da Silva( rdasilva@connecttel.com ) */
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3 /* Compile this one with gcc. */
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4 /* Copyright (C) 1997, 1999, 2000, 2002, 2003, 2005, 2008, 2009
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5 Free Software Foundation, Inc.
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License as published by the Free
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11 Software Foundation; either version 3, or (at your option) any later
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12 version.
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13
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14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 Under Section 7 of GPL version 3, you are granted additional
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20 permissions described in the GCC Runtime Library Exception, version
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21 3.1, as published by the Free Software Foundation.
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22
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23 You should have received a copy of the GNU General Public License and
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24 a copy of the GCC Runtime Library Exception along with this program;
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25 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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26 <http://www.gnu.org/licenses/>. */
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27
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28 #ifndef GCC_GTHR_RTEMS_H
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29 #define GCC_GTHR_RTEMS_H
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30
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 #define __GTHREADS 1
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36
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37 #define __GTHREAD_ONCE_INIT 0
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38 #define __GTHREAD_MUTEX_INIT_FUNCTION rtems_gxx_mutex_init
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39 #define __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION rtems_gxx_recursive_mutex_init
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40
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41 /* Avoid dependency on rtems specific headers. */
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42 typedef void *__gthread_key_t;
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43 typedef int __gthread_once_t;
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44 typedef void *__gthread_mutex_t;
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45 typedef void *__gthread_recursive_mutex_t;
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46
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47 /*
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48 * External functions provided by RTEMS. They are very similar to their POSIX
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49 * counterparts. A "Wrapper API" is being use to avoid dependency on any RTEMS
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50 * header files.
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51 */
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52
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53 /* generic per task variables */
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54 extern int rtems_gxx_once (__gthread_once_t *__once, void (*__func) (void));
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55 extern int rtems_gxx_key_create (__gthread_key_t *__key, void (*__dtor) (void *));
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56 extern int rtems_gxx_key_delete (__gthread_key_t __key);
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57 extern void *rtems_gxx_getspecific (__gthread_key_t __key);
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58 extern int rtems_gxx_setspecific (__gthread_key_t __key, const void *__ptr);
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59
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60 /* mutex support */
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61 extern void rtems_gxx_mutex_init (__gthread_mutex_t *__mutex);
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62 extern int rtems_gxx_mutex_destroy (__gthread_mutex_t *__mutex);
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63 extern int rtems_gxx_mutex_lock (__gthread_mutex_t *__mutex);
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64 extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *__mutex);
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65 extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *__mutex);
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66
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67 /* recursive mutex support */
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68 extern void rtems_gxx_recursive_mutex_init (__gthread_recursive_mutex_t *__mutex);
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69 extern int rtems_gxx_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex);
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70 extern int rtems_gxx_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex);
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71 extern int rtems_gxx_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex);
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72
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73 /* RTEMS threading is always active */
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74 static inline int
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75 __gthread_active_p (void)
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76 {
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77 return 1;
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78 }
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79
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80 /* Wrapper calls */
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81 static inline int
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82 __gthread_once (__gthread_once_t *__once, void (*__func) (void))
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83 {
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84 return rtems_gxx_once( __once, __func );
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85 }
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86
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87 static inline int
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88 __gthread_key_create (__gthread_key_t *__key, void (*__dtor) (void *))
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89 {
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90 return rtems_gxx_key_create( __key, __dtor );
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91 }
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92
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93 static inline int
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94 __gthread_key_delete (__gthread_key_t __key)
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95 {
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96 return rtems_gxx_key_delete (__key);
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97 }
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98
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99 static inline void *
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100 __gthread_getspecific (__gthread_key_t __key)
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101 {
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102 return rtems_gxx_getspecific (__key);
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103 }
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104
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105 static inline int
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106 __gthread_setspecific (__gthread_key_t __key, const void *__ptr)
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107 {
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108 return rtems_gxx_setspecific (__key, __ptr);
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109 }
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110
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111 static inline int
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112 __gthread_mutex_destroy (__gthread_mutex_t *__mutex)
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113 {
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114 return rtems_gxx_mutex_destroy (__mutex);
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115 }
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116
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117 static inline int
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118 __gthread_mutex_lock (__gthread_mutex_t *__mutex)
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119 {
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120 return rtems_gxx_mutex_lock (__mutex);
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121 }
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122
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123 static inline int
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124 __gthread_mutex_trylock (__gthread_mutex_t *__mutex)
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125 {
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126 return rtems_gxx_mutex_trylock (__mutex);
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127 }
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128
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129 static inline int
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130 __gthread_mutex_unlock (__gthread_mutex_t *__mutex)
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131 {
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132 return rtems_gxx_mutex_unlock( __mutex );
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133 }
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134
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135 static inline int
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136 __gthread_recursive_mutex_lock (__gthread_recursive_mutex_t *__mutex)
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137 {
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138 return rtems_gxx_recursive_mutex_lock (__mutex);
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139 }
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140
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141 static inline int
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142 __gthread_recursive_mutex_trylock (__gthread_recursive_mutex_t *__mutex)
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143 {
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144 return rtems_gxx_recursive_mutex_trylock (__mutex);
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145 }
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146
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147 static inline int
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148 __gthread_recursive_mutex_unlock (__gthread_recursive_mutex_t *__mutex)
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149 {
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150 return rtems_gxx_recursive_mutex_unlock( __mutex );
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151 }
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152
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153 #ifdef __cplusplus
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154 }
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155 #endif
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156
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157 #endif /* ! GCC_GTHR_RTEMS_H */
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