1 | /* userext.inl |
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2 | * |
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3 | * This file contains the macro implementation of the inlined routines |
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4 | * from the User Extension Handler |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.OARcorp.com/rtems/license.html. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #ifndef __USER_EXTENSIONS_inl |
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17 | #define __USER_EXTENSIONS_inl |
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18 | |
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19 | /*PAGE |
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20 | * |
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21 | * _User_extensions_Handler_initialization |
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22 | * |
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23 | */ |
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24 | |
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25 | #define _User_extensions_Handler_initialization( \ |
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26 | _number_of_extensions, _initial_extensions \ |
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27 | ) \ |
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28 | { \ |
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29 | User_extensions_Control *extension; \ |
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30 | unsigned32 i; \ |
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31 | \ |
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32 | _Chain_Initialize_empty( &_User_extensions_List ); \ |
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33 | _Chain_Initialize_empty( &_User_extensions_Switches_list ); \ |
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34 | \ |
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35 | if ( (_initial_extensions) ) { \ |
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36 | extension = _Workspace_Allocate_or_fatal_error( \ |
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37 | sizeof(User_extensions_Control) * _number_of_extensions ); \ |
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38 | \ |
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39 | memset ( \ |
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40 | extension, \ |
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41 | 0, \ |
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42 | _number_of_extensions * sizeof( User_extensions_Control ) \ |
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43 | ); \ |
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44 | \ |
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45 | for ( i = 0 ; i < _number_of_extensions ; i++ ) { \ |
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46 | _User_extensions_Add_set (extension, &_initial_extensions[i]); \ |
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47 | extension++; \ |
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48 | } \ |
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49 | } \ |
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50 | } |
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51 | |
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52 | /*PAGE |
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53 | * |
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54 | * _User_extensions_Add_set |
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55 | */ |
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56 | |
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57 | #define _User_extensions_Add_set( _the_extension, _extension_table ) \ |
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58 | do { \ |
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59 | (_the_extension)->Callouts = *(_extension_table); \ |
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60 | \ |
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61 | _Chain_Prepend( &_User_extensions_List, &(_the_extension)->Node ); \ |
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62 | \ |
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63 | if ( (_the_extension)->Callouts.thread_switch != NULL ) { \ |
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64 | (_the_extension)->Switch.thread_switch = \ |
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65 | (_the_extension)->Callouts.thread_switch; \ |
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66 | _Chain_Append( \ |
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67 | &_User_extensions_Switches_list, \ |
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68 | &(_the_extension)->Switch.Node \ |
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69 | ); \ |
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70 | } \ |
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71 | } while ( 0 ) |
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72 | |
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73 | |
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74 | /*PAGE |
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75 | * |
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76 | * _User_extensions_Add_API_set |
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77 | */ |
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78 | |
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79 | #define _User_extensions_Add_API_set( _the_extension ) \ |
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80 | do { \ |
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81 | _Chain_Prepend( &_User_extensions_List, &(_the_extension)->Node ); \ |
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82 | \ |
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83 | if ( (_the_extension)->Callouts.thread_switch != NULL ) { \ |
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84 | (_the_extension)->Switch.thread_switch = \ |
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85 | (_the_extension)->Callouts.thread_switch; \ |
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86 | _Chain_Append( \ |
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87 | &_User_extensions_Switches_list, &(_the_extension)->Switch.Node ); \ |
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88 | } \ |
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89 | } while ( 0 ) |
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90 | |
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91 | |
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92 | /*PAGE |
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93 | * |
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94 | * _User_extensions_Remove_set |
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95 | */ |
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96 | |
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97 | #define _User_extensions_Remove_set( _the_extension ) \ |
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98 | do { \ |
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99 | _Chain_Extract( &(_the_extension)->Node ); \ |
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100 | \ |
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101 | if ( (_the_extension)->Callouts.thread_switch != NULL ) { \ |
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102 | _Chain_Extract( &(_the_extension)->Node ); \ |
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103 | } \ |
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104 | } while (0) |
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105 | |
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106 | /*PAGE |
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107 | * |
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108 | * _User_extensions_Run_list_forward |
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109 | * |
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110 | * NOTE: No parentheses around macro names here to avoid |
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111 | * messing up the name and function call expansion. |
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112 | */ |
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113 | |
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114 | #define _User_extensions_Run_list_forward( _list, _name, _arguments ) \ |
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115 | do { \ |
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116 | Chain_Node *the_node; \ |
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117 | User_extensions_Control *the_extension; \ |
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118 | \ |
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119 | for ( the_node = (_list).first ; \ |
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120 | !_Chain_Is_tail( &(_list), the_node ) ; \ |
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121 | the_node = the_node->next ) { \ |
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122 | the_extension = (User_extensions_Control *) the_node; \ |
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123 | \ |
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124 | if ( the_extension->Callouts.## _name != NULL ) \ |
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125 | (*the_extension->Callouts.## _name) _arguments; \ |
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126 | \ |
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127 | } \ |
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128 | \ |
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129 | } while ( 0 ) |
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130 | |
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131 | /*PAGE |
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132 | * |
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133 | * _User_extensions_Run_list_backward |
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134 | * |
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135 | * NOTE: No parentheses around macro names here to avoid |
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136 | * messing up the name and function call expansion. |
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137 | */ |
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138 | |
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139 | #define _User_extensions_Run_list_backward( _list, _name, _arguments ) \ |
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140 | do { \ |
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141 | Chain_Node *the_node; \ |
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142 | User_extensions_Control *the_extension; \ |
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143 | \ |
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144 | for ( the_node = (_list).last ; \ |
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145 | !_Chain_Is_head( &(_list), the_node ) ; \ |
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146 | the_node = the_node->previous ) { \ |
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147 | the_extension = (User_extensions_Control *) the_node; \ |
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148 | \ |
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149 | if ( the_extension->Callouts.## _name != NULL ) \ |
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150 | (*the_extension->Callouts.## _name) _arguments; \ |
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151 | \ |
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152 | } \ |
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153 | \ |
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154 | } while ( 0 ) |
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155 | |
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156 | /*PAGE |
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157 | * |
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158 | * _User_extensions_Thread_switch |
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159 | * |
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160 | */ |
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161 | |
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162 | #define _User_extensions_Thread_switch( _executing, _heir ) \ |
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163 | _User_extensions_Run_list_forward( \ |
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164 | _User_extensions_Switches_list, \ |
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165 | thread_switch, \ |
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166 | (_executing, _heir) \ |
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167 | ) |
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168 | |
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169 | #endif |
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170 | /* end of include file */ |
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