1 | /* |
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2 | * COPYRIGHT (c) 1989-1999. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.OARcorp.com/rtems/license.html. |
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8 | * |
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9 | * $Id$ |
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10 | */ |
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11 | |
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12 | #include <itron.h> |
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13 | |
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14 | #include <rtems/score/thread.h> |
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15 | #include <rtems/score/userext.h> |
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16 | #include <rtems/score/wkspace.h> |
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17 | #include <rtems/score/apiext.h> |
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18 | #include <rtems/score/sysstate.h> |
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19 | |
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20 | #include <rtems/itron/task.h> |
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21 | |
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22 | /* |
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23 | * _ITRON_Task_Create_extension |
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24 | * |
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25 | * This routine is an extension routine that is invoked as part |
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26 | * of creating any type of task or thread in the system. If the |
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27 | * task is created via another API, then this routine is invoked |
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28 | * and this API given the opportunity to initialize its extension |
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29 | * area. |
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30 | */ |
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31 | |
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32 | boolean _ITRON_Task_Create_extension( |
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33 | Thread_Control *executing, |
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34 | Thread_Control *created |
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35 | ) |
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36 | { |
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37 | ITRON_API_Control *api; |
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38 | |
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39 | api = _Workspace_Allocate( sizeof( ITRON_API_Control ) ); |
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40 | |
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41 | if ( !api ) |
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42 | return FALSE; |
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43 | |
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44 | created->API_Extensions[ THREAD_API_ITRON ] = api; |
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45 | |
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46 | /* |
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47 | * Initialize the ITRON API extension |
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48 | */ |
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49 | |
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50 | return TRUE; |
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51 | } |
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52 | |
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53 | /* |
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54 | * _ITRON_Task_Delete_extension |
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55 | * |
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56 | * This extension routine is invoked when a task is deleted. |
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57 | */ |
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58 | |
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59 | User_extensions_routine _ITRON_Task_Delete_extension( |
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60 | Thread_Control *executing, |
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61 | Thread_Control *deleted |
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62 | ) |
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63 | { |
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64 | (void) _Workspace_Free( deleted->API_Extensions[ THREAD_API_ITRON ] ); |
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65 | |
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66 | deleted->API_Extensions[ THREAD_API_ITRON ] = NULL; |
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67 | } |
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68 | |
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69 | /* |
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70 | * _ITRON_Task_Initialize_user_tasks |
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71 | * |
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72 | * This routine creates and starts all configured user |
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73 | * initialzation threads. |
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74 | */ |
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75 | |
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76 | void _ITRON_Task_Initialize_user_tasks( void ) |
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77 | { |
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78 | unsigned32 index; |
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79 | unsigned32 maximum; |
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80 | ER return_value; |
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81 | itron_initialization_tasks_table *user_tasks; |
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82 | |
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83 | /* |
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84 | * NOTE: This is slightly different from the Ada implementation. |
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85 | */ |
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86 | |
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87 | user_tasks = _ITRON_Task_User_initialization_tasks; |
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88 | maximum = _ITRON_Task_Number_of_initialization_tasks; |
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89 | |
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90 | if ( !user_tasks || maximum == 0 ) |
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91 | return; |
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92 | |
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93 | for ( index=0 ; index < maximum ; index++ ) { |
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94 | |
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95 | return_value = cre_tsk( |
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96 | user_tasks[ index ].id, |
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97 | &user_tasks[ index ].attributes |
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98 | ); |
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99 | |
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100 | if ( return_value != E_OK ) |
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101 | _Internal_error_Occurred( INTERNAL_ERROR_ITRON_API, TRUE, return_value ); |
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102 | |
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103 | return_value = sta_tsk( user_tasks[ index ].id, 0 ); |
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104 | |
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105 | if ( return_value != E_OK ) |
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106 | _Internal_error_Occurred( INTERNAL_ERROR_ITRON_API, TRUE, return_value ); |
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107 | |
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108 | } |
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109 | } |
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110 | |
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111 | /*PAGE |
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112 | * |
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113 | * _ITRON_Delete_task |
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114 | */ |
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115 | |
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116 | ER _ITRON_Delete_task( |
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117 | Thread_Control *the_thread |
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118 | ) |
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119 | { |
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120 | Objects_Information *the_information; |
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121 | |
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122 | the_information = _Objects_Get_information( the_thread->Object.id ); |
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123 | if ( !the_information ) { |
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124 | return E_OBJ; /* XXX - should never happen */ |
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125 | } |
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126 | |
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127 | _Thread_Close( the_information, the_thread ); |
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128 | |
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129 | _ITRON_Task_Free( the_thread ); |
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130 | |
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131 | return E_OK; |
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132 | } |
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133 | |
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134 | /* |
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135 | * At this point in time, the ITRON API does not need any other |
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136 | * extensions. See the POSIX and RTEMS API extensions for |
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137 | * examples of how they can be used. |
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138 | */ |
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139 | |
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140 | /* |
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141 | * Extension Tables |
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142 | */ |
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143 | |
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144 | API_extensions_Control _ITRON_Task_API_extensions = { |
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145 | { NULL, NULL }, |
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146 | NULL, /* predriver */ |
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147 | _ITRON_Task_Initialize_user_tasks, /* postdriver */ |
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148 | NULL /* post switch */ |
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149 | }; |
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150 | |
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151 | User_extensions_Control _ITRON_Task_User_extensions = { |
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152 | { NULL, NULL }, |
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153 | { _ITRON_Task_Create_extension, /* create */ |
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154 | NULL, /* start */ |
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155 | NULL, /* restart */ |
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156 | _ITRON_Task_Delete_extension, /* delete */ |
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157 | NULL, /* switch */ |
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158 | NULL, /* begin */ |
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159 | NULL, /* exitted */ |
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160 | NULL /* fatal */ |
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161 | } |
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162 | }; |
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163 | |
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164 | /* |
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165 | * _ITRON_Task_Manager_initialization |
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166 | * |
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167 | * This routine initializes all Task Manager related data structures. |
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168 | * |
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169 | * Input parameters: |
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170 | * maximum_tasks - number of tasks to initialize |
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171 | * |
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172 | * Output parameters: NONE |
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173 | */ |
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174 | |
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175 | void _ITRON_Task_Manager_initialization( |
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176 | unsigned32 maximum_tasks, |
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177 | unsigned32 number_of_initialization_tasks, |
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178 | itron_initialization_tasks_table *user_tasks |
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179 | ) |
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180 | { |
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181 | |
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182 | _ITRON_Task_Number_of_initialization_tasks = number_of_initialization_tasks; |
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183 | _ITRON_Task_User_initialization_tasks = user_tasks; |
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184 | |
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185 | /* |
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186 | * There may not be any ITRON_initialization tasks configured. |
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187 | */ |
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188 | |
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189 | #if 0 |
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190 | if ( user_tasks == NULL || number_of_initialization_tasks == 0 ) |
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191 | _Internal_error_Occurred( INTERNAL_ERROR_ITRON_API, TRUE, -1 ); |
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192 | #endif |
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193 | |
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194 | _Objects_Initialize_information( |
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195 | &_ITRON_Task_Information, /* object information table */ |
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196 | OBJECTS_ITRON_TASKS, /* object class */ |
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197 | FALSE, /* TRUE if this is a global object class */ |
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198 | maximum_tasks, /* maximum objects of this class */ |
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199 | sizeof( Thread_Control ), /* size of this object's control block */ |
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200 | FALSE, /* TRUE if names for this object are strings */ |
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201 | ITRON_MAXIMUM_NAME_LENGTH, /* maximum length of each object's name */ |
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202 | TRUE /* TRUE if this class is threads */ |
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203 | ); |
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204 | |
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205 | /* |
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206 | * Add all the extensions for this API |
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207 | */ |
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208 | |
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209 | _User_extensions_Add_API_set( &_ITRON_Task_User_extensions ); |
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210 | |
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211 | _API_extensions_Add( &_ITRON_Task_API_extensions ); |
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212 | |
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213 | /* |
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214 | * XXX MP not supported |
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215 | * Register the MP Process Packet routine. |
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216 | */ |
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217 | |
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218 | } |
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