[ac7d5ef0] | 1 | /* |
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| 2 | * RTEMS Task Manager |
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| 3 | * |
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| 4 | * |
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| 5 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 6 | * On-Line Applications Research Corporation (OAR). |
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| 7 | * All rights assigned to U.S. Government, 1994. |
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| 8 | * |
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| 9 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 10 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 11 | * notice must appear in all copies of this file and its derivatives. |
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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 | #include <rtems/system.h> |
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[3a4ae6c] | 17 | #include <rtems/rtems/status.h> |
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| 18 | #include <rtems/rtems/support.h> |
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| 19 | #include <rtems/rtems/modes.h> |
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| 20 | #include <rtems/core/object.h> |
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| 21 | #include <rtems/core/stack.h> |
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| 22 | #include <rtems/core/states.h> |
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| 23 | #include <rtems/rtems/tasks.h> |
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| 24 | #include <rtems/core/thread.h> |
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| 25 | #include <rtems/core/threadq.h> |
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| 26 | #include <rtems/core/tod.h> |
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| 27 | #include <rtems/core/userext.h> |
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| 28 | #include <rtems/core/wkspace.h> |
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[7af35da5] | 29 | #include <rtems/core/apiext.h> |
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[24b1cb9] | 30 | #include <rtems/core/sysstate.h> |
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[3a4ae6c] | 31 | |
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| 32 | /*PAGE |
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| 33 | * |
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| 34 | * _RTEMS_tasks_Create_extension |
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| 35 | * |
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| 36 | * XXX |
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| 37 | */ |
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| 38 | |
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| 39 | boolean _RTEMS_tasks_Create_extension( |
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| 40 | Thread_Control *executing, |
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| 41 | Thread_Control *created |
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| 42 | ) |
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| 43 | { |
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| 44 | RTEMS_API_Control *api; |
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| 45 | |
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| 46 | api = _Workspace_Allocate( sizeof( RTEMS_API_Control ) ); |
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| 47 | |
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| 48 | if ( !api ) |
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| 49 | return FALSE; |
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| 50 | |
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| 51 | created->API_Extensions[ THREAD_API_RTEMS ] = api; |
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| 52 | |
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| 53 | api->pending_events = EVENT_SETS_NONE_PENDING; |
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| 54 | _ASR_Initialize( &api->Signal ); |
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| 55 | return TRUE; |
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| 56 | } |
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| 57 | |
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| 58 | /*PAGE |
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| 59 | * |
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| 60 | * _RTEMS_tasks_Start_extension |
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| 61 | * |
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| 62 | * XXX |
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| 63 | */ |
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| 64 | |
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| 65 | User_extensions_routine _RTEMS_tasks_Start_extension( |
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| 66 | Thread_Control *executing, |
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| 67 | Thread_Control *started |
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| 68 | ) |
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| 69 | { |
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| 70 | RTEMS_API_Control *api; |
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| 71 | |
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| 72 | api = started->API_Extensions[ THREAD_API_RTEMS ]; |
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| 73 | |
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| 74 | api->pending_events = EVENT_SETS_NONE_PENDING; |
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| 75 | |
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| 76 | _ASR_Initialize( &api->Signal ); |
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| 77 | } |
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| 78 | |
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| 79 | /*PAGE |
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| 80 | * |
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| 81 | * _RTEMS_tasks_Delete_extension |
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| 82 | * |
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| 83 | * XXX |
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| 84 | */ |
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| 85 | |
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| 86 | User_extensions_routine _RTEMS_tasks_Delete_extension( |
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| 87 | Thread_Control *executing, |
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| 88 | Thread_Control *deleted |
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| 89 | ) |
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| 90 | { |
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| 91 | (void) _Workspace_Free( deleted->API_Extensions[ THREAD_API_RTEMS ] ); |
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| 92 | |
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| 93 | deleted->API_Extensions[ THREAD_API_RTEMS ] = NULL; |
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| 94 | } |
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| 95 | |
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| 96 | /*PAGE |
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| 97 | * |
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| 98 | * _RTEMS_tasks_Switch_extension |
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| 99 | * |
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| 100 | * XXX |
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| 101 | */ |
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| 102 | |
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| 103 | User_extensions_routine _RTEMS_tasks_Switch_extension( |
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| 104 | Thread_Control *executing |
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| 105 | ) |
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| 106 | { |
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| 107 | ISR_Level level; |
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| 108 | RTEMS_API_Control *api; |
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| 109 | ASR_Information *asr; |
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| 110 | rtems_signal_set signal_set; |
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| 111 | Modes_Control prev_mode; |
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| 112 | |
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| 113 | api = executing->API_Extensions[ THREAD_API_RTEMS ]; |
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| 114 | asr = &api->Signal; |
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| 115 | |
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| 116 | _ISR_Disable( level ); |
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[3652ad35] | 117 | signal_set = asr->signals_posted; |
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[3a4ae6c] | 118 | asr->signals_posted = 0; |
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[3652ad35] | 119 | _ISR_Enable( level ); |
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[3a4ae6c] | 120 | |
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| 121 | |
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[3652ad35] | 122 | if ( !signal_set ) /* similar to _ASR_Are_signals_pending( asr ) */ |
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| 123 | return; |
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[3a4ae6c] | 124 | |
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[3652ad35] | 125 | asr->nest_level += 1; |
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| 126 | rtems_task_mode( asr->mode_set, RTEMS_ALL_MODE_MASKS, &prev_mode ); |
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| 127 | |
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| 128 | (*asr->handler)( signal_set ); |
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| 129 | |
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| 130 | asr->nest_level -= 1; |
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| 131 | rtems_task_mode( prev_mode, RTEMS_ALL_MODE_MASKS, &prev_mode ); |
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[3a4ae6c] | 132 | |
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| 133 | } |
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| 134 | |
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[7af35da5] | 135 | API_extensions_Control _RTEMS_tasks_API_extensions = { |
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[3a4ae6c] | 136 | { NULL, NULL }, |
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| 137 | NULL, /* predriver */ |
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| 138 | _RTEMS_tasks_Initialize_user_tasks /* postdriver */ |
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| 139 | }; |
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| 140 | |
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[7af35da5] | 141 | User_extensions_Control _RTEMS_tasks_User_extensions = { |
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[3a4ae6c] | 142 | { NULL, NULL }, |
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| 143 | { _RTEMS_tasks_Create_extension, /* create */ |
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| 144 | _RTEMS_tasks_Start_extension, /* start */ |
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| 145 | _RTEMS_tasks_Start_extension, /* restart */ |
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| 146 | _RTEMS_tasks_Delete_extension, /* delete */ |
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| 147 | NULL, /* switch */ |
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| 148 | _RTEMS_tasks_Switch_extension, /* post switch */ |
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| 149 | NULL, /* begin */ |
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| 150 | NULL, /* exitted */ |
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| 151 | NULL /* fatal */ |
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| 152 | } |
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| 153 | }; |
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[ac7d5ef0] | 154 | |
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[5250ff39] | 155 | /*PAGE |
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| 156 | * |
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| 157 | * _RTEMS_tasks_Manager_initialization |
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| 158 | * |
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| 159 | * This routine initializes all Task Manager related data structures. |
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| 160 | * |
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| 161 | * Input parameters: |
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| 162 | * maximum_tasks - number of tasks to initialize |
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| 163 | * |
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| 164 | * Output parameters: NONE |
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| 165 | */ |
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| 166 | |
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| 167 | void _RTEMS_tasks_Manager_initialization( |
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[3a4ae6c] | 168 | unsigned32 maximum_tasks, |
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| 169 | unsigned32 number_of_initialization_tasks, |
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| 170 | rtems_initialization_tasks_table *user_tasks |
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[5250ff39] | 171 | ) |
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| 172 | { |
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[3a4ae6c] | 173 | |
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| 174 | _RTEMS_tasks_Number_of_initialization_tasks = number_of_initialization_tasks; |
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| 175 | _RTEMS_tasks_User_initialization_tasks = user_tasks; |
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| 176 | |
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| 177 | if ( user_tasks == NULL || number_of_initialization_tasks == 0 ) |
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| 178 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, RTEMS_TOO_MANY ); |
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| 179 | |
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[5250ff39] | 180 | _Objects_Initialize_information( |
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| 181 | &_RTEMS_tasks_Information, |
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| 182 | OBJECTS_RTEMS_TASKS, |
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| 183 | TRUE, |
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| 184 | maximum_tasks, |
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| 185 | sizeof( Thread_Control ), |
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| 186 | FALSE, |
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| 187 | RTEMS_MAXIMUM_NAME_LENGTH, |
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| 188 | TRUE |
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| 189 | ); |
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[3a4ae6c] | 190 | |
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| 191 | /* |
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| 192 | * Add all the extensions for this API |
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| 193 | */ |
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| 194 | |
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[7af35da5] | 195 | _User_extensions_Add_API_set( &_RTEMS_tasks_User_extensions ); |
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[3a4ae6c] | 196 | |
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[7af35da5] | 197 | _API_extensions_Add( &_RTEMS_tasks_API_extensions ); |
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[3a4ae6c] | 198 | |
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| 199 | /* |
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| 200 | * Register the MP Process Packet routine. |
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| 201 | */ |
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| 202 | |
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| 203 | _MPCI_Register_packet_processor( |
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| 204 | MP_PACKET_TASKS, |
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| 205 | _RTEMS_tasks_MP_Process_packet |
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| 206 | ); |
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| 207 | |
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[5250ff39] | 208 | } |
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| 209 | |
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[ac7d5ef0] | 210 | /*PAGE |
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| 211 | * |
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| 212 | * rtems_task_create |
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| 213 | * |
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| 214 | * This directive creates a thread by allocating and initializing a |
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| 215 | * thread control block and a stack. The newly created thread is |
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| 216 | * placed in the dormant state. |
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| 217 | * |
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| 218 | * Input parameters: |
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| 219 | * name - user defined thread name |
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| 220 | * initial_priority - thread priority |
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| 221 | * stack_size - stack size in bytes |
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| 222 | * initial_modes - initial thread mode |
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| 223 | * attribute_set - thread attributes |
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| 224 | * id - pointer to thread id |
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| 225 | * |
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| 226 | * Output parameters: |
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| 227 | * id - thread id |
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| 228 | * RTEMS_SUCCESSFUL - if successful |
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| 229 | * error code - if unsuccessful |
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| 230 | */ |
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| 231 | |
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| 232 | rtems_status_code rtems_task_create( |
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[3235ad9] | 233 | rtems_name name, |
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[ac7d5ef0] | 234 | rtems_task_priority initial_priority, |
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| 235 | unsigned32 stack_size, |
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| 236 | rtems_mode initial_modes, |
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| 237 | rtems_attribute attribute_set, |
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| 238 | Objects_Id *id |
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| 239 | ) |
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| 240 | { |
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| 241 | register Thread_Control *the_thread; |
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[7f6a24ab] | 242 | Objects_MP_Control *the_global_object = NULL; |
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| 243 | boolean is_fp; |
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| 244 | boolean is_global; |
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[3a4ae6c] | 245 | boolean status; |
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[ac7d5ef0] | 246 | rtems_attribute the_attribute_set; |
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[7f6a24ab] | 247 | Priority_Control core_priority; |
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[3a4ae6c] | 248 | RTEMS_API_Control *api; |
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| 249 | ASR_Information *asr; |
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[7f6a24ab] | 250 | |
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[ac7d5ef0] | 251 | |
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[3235ad9] | 252 | if ( !rtems_is_name_valid( name ) ) |
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[3a4ae6c] | 253 | return RTEMS_INVALID_NAME; |
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[ac7d5ef0] | 254 | |
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[7f6a24ab] | 255 | /* |
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| 256 | * Core Thread Initialize insures we get the minimum amount of |
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| 257 | * stack space. |
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| 258 | */ |
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| 259 | |
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[ac7d5ef0] | 260 | #if 0 |
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| 261 | if ( !_Stack_Is_enough( stack_size ) ) |
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[3a4ae6c] | 262 | return RTEMS_INVALID_SIZE; |
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[ac7d5ef0] | 263 | #endif |
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| 264 | |
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[7f6a24ab] | 265 | /* |
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| 266 | * Validate the RTEMS API priority and convert it to the core priority range. |
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| 267 | */ |
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[ac7d5ef0] | 268 | |
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[3a4ae6c] | 269 | if ( !_RTEMS_tasks_Priority_is_valid( initial_priority ) ) |
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| 270 | return RTEMS_INVALID_PRIORITY; |
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[ac7d5ef0] | 271 | |
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[3a4ae6c] | 272 | core_priority = _RTEMS_tasks_Priority_to_Core( initial_priority ); |
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[7f6a24ab] | 273 | |
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[ac7d5ef0] | 274 | /* |
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| 275 | * Fix the attribute set to match the attributes which |
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| 276 | * this processor (1) requires and (2) is able to support. |
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| 277 | * First add in the required flags for attribute_set |
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| 278 | * Typically this might include FP if the platform |
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| 279 | * or application required all tasks to be fp aware. |
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| 280 | * Then turn off the requested bits which are not supported. |
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| 281 | */ |
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| 282 | |
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| 283 | the_attribute_set = _Attributes_Set( attribute_set, ATTRIBUTES_REQUIRED ); |
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| 284 | the_attribute_set = |
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| 285 | _Attributes_Clear( the_attribute_set, ATTRIBUTES_NOT_SUPPORTED ); |
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| 286 | |
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[7f6a24ab] | 287 | if ( _Attributes_Is_floating_point( the_attribute_set ) ) |
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| 288 | is_fp = TRUE; |
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| 289 | else |
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| 290 | is_fp = FALSE; |
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| 291 | |
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| 292 | if ( _Attributes_Is_global( the_attribute_set ) ) { |
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| 293 | |
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| 294 | is_global = TRUE; |
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| 295 | |
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[3a4ae6c] | 296 | if ( !_System_state_Is_multiprocessing ) |
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| 297 | return RTEMS_MP_NOT_CONFIGURED; |
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[ac7d5ef0] | 298 | |
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[7f6a24ab] | 299 | } else |
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| 300 | is_global = FALSE; |
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| 301 | |
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| 302 | /* |
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| 303 | * Make sure system is MP if this task is global |
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| 304 | */ |
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| 305 | |
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| 306 | /* |
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| 307 | * Disable dispatch for protection |
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| 308 | */ |
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| 309 | |
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| 310 | _Thread_Disable_dispatch(); |
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| 311 | |
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| 312 | /* |
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| 313 | * Allocate the thread control block and -- if the task is global -- |
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| 314 | * allocate a global object control block. |
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| 315 | * |
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| 316 | * NOTE: This routine does not use the combined allocate and open |
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| 317 | * global object routine because this results in a lack of |
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| 318 | * control over when memory is allocated and can be freed in |
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| 319 | * the event of an error. |
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| 320 | */ |
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[ac7d5ef0] | 321 | |
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| 322 | the_thread = _RTEMS_tasks_Allocate(); |
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| 323 | |
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| 324 | if ( !the_thread ) { |
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| 325 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 326 | return RTEMS_TOO_MANY; |
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[ac7d5ef0] | 327 | } |
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| 328 | |
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[7f6a24ab] | 329 | if ( is_global ) { |
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| 330 | the_global_object = _Objects_MP_Allocate_global_object(); |
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[ac7d5ef0] | 331 | |
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[7f6a24ab] | 332 | if ( _Objects_MP_Is_null_global_object( the_global_object ) ) { |
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| 333 | _RTEMS_tasks_Free( the_thread ); |
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| 334 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 335 | return RTEMS_TOO_MANY; |
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[7f6a24ab] | 336 | } |
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| 337 | } |
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[ac7d5ef0] | 338 | |
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| 339 | /* |
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[7f6a24ab] | 340 | * Initialize the core thread for this task. |
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[ac7d5ef0] | 341 | */ |
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| 342 | |
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[3a4ae6c] | 343 | status = _Thread_Initialize( |
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| 344 | &_RTEMS_tasks_Information, |
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| 345 | the_thread, |
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| 346 | NULL, |
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| 347 | stack_size, |
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| 348 | is_fp, |
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| 349 | core_priority, |
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| 350 | _Modes_Is_preempt(initial_modes) ? TRUE : FALSE, |
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| 351 | _Modes_Is_timeslice(initial_modes) ? TRUE : FALSE, |
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| 352 | _Modes_Get_interrupt_level(initial_modes), |
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| 353 | &name |
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| 354 | ); |
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[ac7d5ef0] | 355 | |
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[3a4ae6c] | 356 | if ( !status ) { |
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[7f6a24ab] | 357 | if ( is_global ) |
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| 358 | _Objects_MP_Free_global_object( the_global_object ); |
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[ac7d5ef0] | 359 | _RTEMS_tasks_Free( the_thread ); |
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| 360 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 361 | return RTEMS_UNSATISFIED; |
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[ac7d5ef0] | 362 | } |
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| 363 | |
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[3a4ae6c] | 364 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
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| 365 | asr = &api->Signal; |
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| 366 | |
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| 367 | asr->is_enabled = _Modes_Is_asr_disabled(initial_modes) ? FALSE : TRUE; |
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| 368 | |
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[7f6a24ab] | 369 | *id = the_thread->Object.id; |
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[ac7d5ef0] | 370 | |
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[7f6a24ab] | 371 | if ( is_global ) { |
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[ac7d5ef0] | 372 | |
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[3a4ae6c] | 373 | the_thread->is_global = TRUE; |
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[ac7d5ef0] | 374 | |
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[7f6a24ab] | 375 | _Objects_MP_Open( |
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| 376 | &_RTEMS_tasks_Information, |
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| 377 | the_global_object, |
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| 378 | name, |
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| 379 | the_thread->Object.id |
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| 380 | ); |
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[ac7d5ef0] | 381 | |
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| 382 | _RTEMS_tasks_MP_Send_process_packet( |
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| 383 | RTEMS_TASKS_MP_ANNOUNCE_CREATE, |
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| 384 | the_thread->Object.id, |
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| 385 | name |
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| 386 | ); |
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| 387 | |
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[7f6a24ab] | 388 | } |
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| 389 | |
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[ac7d5ef0] | 390 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 391 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 392 | } |
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| 393 | |
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| 394 | /*PAGE |
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| 395 | * |
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| 396 | * rtems_task_ident |
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| 397 | * |
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| 398 | * This directive returns the system ID associated with |
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| 399 | * the thread name. |
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| 400 | * |
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| 401 | * Input parameters: |
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| 402 | * name - user defined thread name |
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| 403 | * node - node(s) to be searched |
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| 404 | * id - pointer to thread id |
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| 405 | * |
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| 406 | * Output parameters: |
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| 407 | * *id - thread id |
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| 408 | * RTEMS_SUCCESSFUL - if successful |
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| 409 | * error code - if unsuccessful |
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| 410 | */ |
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| 411 | |
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| 412 | rtems_status_code rtems_task_ident( |
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[3235ad9] | 413 | rtems_name name, |
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[ac7d5ef0] | 414 | unsigned32 node, |
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| 415 | Objects_Id *id |
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| 416 | ) |
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| 417 | { |
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[3a4ae6c] | 418 | Objects_Name_to_id_errors status; |
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| 419 | |
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| 420 | if ( name == OBJECTS_ID_OF_SELF ) { |
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| 421 | *id = _Thread_Executing->Object.id; |
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| 422 | return RTEMS_SUCCESSFUL; |
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| 423 | } |
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| 424 | |
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| 425 | status = _Objects_Name_to_id( &_RTEMS_tasks_Information, &name, node, id ); |
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[ac7d5ef0] | 426 | |
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[3a4ae6c] | 427 | return _Status_Object_name_errors_to_status[ status ]; |
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[ac7d5ef0] | 428 | } |
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| 429 | |
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| 430 | /*PAGE |
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| 431 | * |
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| 432 | * rtems_task_start |
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| 433 | * |
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| 434 | * This directive readies the thread identified by the "id" |
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| 435 | * based on its current priorty, to await execution. A thread |
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| 436 | * can be started only from the dormant state. |
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| 437 | * |
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| 438 | * Input parameters: |
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| 439 | * id - thread id |
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| 440 | * entry_point - start execution address of thread |
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| 441 | * argument - thread argument |
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| 442 | * |
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| 443 | * Output parameters: |
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| 444 | * RTEMS_SUCCESSFUL - if successful |
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| 445 | * error code - if unsuccessful |
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| 446 | */ |
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| 447 | |
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| 448 | rtems_status_code rtems_task_start( |
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[7f6a24ab] | 449 | rtems_id id, |
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[ac7d5ef0] | 450 | rtems_task_entry entry_point, |
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[7f6a24ab] | 451 | unsigned32 argument |
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[ac7d5ef0] | 452 | ) |
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| 453 | { |
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| 454 | register Thread_Control *the_thread; |
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| 455 | Objects_Locations location; |
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| 456 | |
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| 457 | if ( entry_point == NULL ) |
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[3a4ae6c] | 458 | return RTEMS_INVALID_ADDRESS; |
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[ac7d5ef0] | 459 | |
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| 460 | the_thread = _Thread_Get( id, &location ); |
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| 461 | switch ( location ) { |
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| 462 | case OBJECTS_ERROR: |
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[3a4ae6c] | 463 | return RTEMS_INVALID_ID; |
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[ac7d5ef0] | 464 | case OBJECTS_REMOTE: |
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| 465 | _Thread_Dispatch(); |
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[3a4ae6c] | 466 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
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[ac7d5ef0] | 467 | case OBJECTS_LOCAL: |
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[7f6a24ab] | 468 | if ( _Thread_Start( |
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| 469 | the_thread, THREAD_START_NUMERIC, entry_point, NULL, argument ) ) { |
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[ac7d5ef0] | 470 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 471 | return RTEMS_SUCCESSFUL; |
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[ac7d5ef0] | 472 | } |
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| 473 | _Thread_Enable_dispatch(); |
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[3a4ae6c] | 474 | return RTEMS_INCORRECT_STATE; |
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[ac7d5ef0] | 475 | } |
---|
| 476 | |
---|
[3a4ae6c] | 477 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 478 | } |
---|
| 479 | |
---|
| 480 | /*PAGE |
---|
| 481 | * |
---|
| 482 | * rtems_task_restart |
---|
| 483 | * |
---|
| 484 | * This directive readies the specified thread. It restores |
---|
| 485 | * the thread environment to the original values established |
---|
| 486 | * at thread creation and start time. A thread can be restarted |
---|
| 487 | * from any state except the dormant state. |
---|
| 488 | * |
---|
| 489 | * Input parameters: |
---|
| 490 | * id - thread id |
---|
| 491 | * argument - thread argument |
---|
| 492 | * |
---|
| 493 | * Output parameters: |
---|
| 494 | * RTEMS_SUCCESSFUL - if successful |
---|
| 495 | * error code - if unsuccessful |
---|
| 496 | */ |
---|
| 497 | |
---|
| 498 | rtems_status_code rtems_task_restart( |
---|
| 499 | Objects_Id id, |
---|
| 500 | unsigned32 argument |
---|
| 501 | ) |
---|
| 502 | { |
---|
| 503 | register Thread_Control *the_thread; |
---|
[7f6a24ab] | 504 | Objects_Locations location; |
---|
[ac7d5ef0] | 505 | |
---|
| 506 | the_thread = _Thread_Get( id, &location ); |
---|
| 507 | switch ( location ) { |
---|
| 508 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 509 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 510 | case OBJECTS_REMOTE: |
---|
| 511 | _Thread_Dispatch(); |
---|
[3a4ae6c] | 512 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
---|
[ac7d5ef0] | 513 | case OBJECTS_LOCAL: |
---|
[7f6a24ab] | 514 | if ( _Thread_Restart( the_thread, NULL, argument ) ) { |
---|
[ac7d5ef0] | 515 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 516 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 517 | } |
---|
| 518 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 519 | return RTEMS_INCORRECT_STATE; |
---|
[ac7d5ef0] | 520 | } |
---|
| 521 | |
---|
[3a4ae6c] | 522 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 523 | } |
---|
| 524 | |
---|
| 525 | /*PAGE |
---|
| 526 | * |
---|
| 527 | * rtems_task_delete |
---|
| 528 | * |
---|
| 529 | * This directive allows a thread to delete itself or the thread |
---|
| 530 | * identified in the id field. The executive halts execution |
---|
| 531 | * of the thread and frees the thread control block. |
---|
| 532 | * |
---|
| 533 | * Input parameters: |
---|
| 534 | * id - thread id |
---|
| 535 | * |
---|
| 536 | * Output parameters: |
---|
| 537 | * nothing - if id is the requesting thread (always succeeds) |
---|
| 538 | * RTEMS_SUCCESSFUL - if successful and id is |
---|
| 539 | * not the requesting thread |
---|
| 540 | * error code - if unsuccessful |
---|
| 541 | */ |
---|
| 542 | |
---|
| 543 | rtems_status_code rtems_task_delete( |
---|
| 544 | Objects_Id id |
---|
| 545 | ) |
---|
| 546 | { |
---|
| 547 | register Thread_Control *the_thread; |
---|
| 548 | Objects_Locations location; |
---|
| 549 | |
---|
| 550 | the_thread = _Thread_Get( id, &location ); |
---|
| 551 | switch ( location ) { |
---|
| 552 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 553 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 554 | case OBJECTS_REMOTE: |
---|
| 555 | _Thread_Dispatch(); |
---|
[3a4ae6c] | 556 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
---|
[ac7d5ef0] | 557 | case OBJECTS_LOCAL: |
---|
[7f6a24ab] | 558 | _Thread_Close( &_RTEMS_tasks_Information, the_thread ); |
---|
[ac7d5ef0] | 559 | |
---|
| 560 | _RTEMS_tasks_Free( the_thread ); |
---|
| 561 | |
---|
[3a4ae6c] | 562 | if ( the_thread->is_global ) { |
---|
[ac7d5ef0] | 563 | |
---|
[5250ff39] | 564 | _Objects_MP_Close( &_RTEMS_tasks_Information, the_thread->Object.id ); |
---|
[ac7d5ef0] | 565 | |
---|
| 566 | _RTEMS_tasks_MP_Send_process_packet( |
---|
| 567 | RTEMS_TASKS_MP_ANNOUNCE_DELETE, |
---|
| 568 | the_thread->Object.id, |
---|
| 569 | 0 /* Not used */ |
---|
| 570 | ); |
---|
| 571 | } |
---|
| 572 | |
---|
| 573 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 574 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 575 | } |
---|
| 576 | |
---|
[3a4ae6c] | 577 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 578 | } |
---|
| 579 | |
---|
| 580 | /*PAGE |
---|
| 581 | * |
---|
| 582 | * rtems_task_suspend |
---|
| 583 | * |
---|
| 584 | * This directive will place the specified thread in the "suspended" |
---|
| 585 | * state. Note that the suspended state can be in addition to |
---|
| 586 | * other waiting states. |
---|
| 587 | * |
---|
| 588 | * Input parameters: |
---|
| 589 | * id - thread id |
---|
| 590 | * |
---|
| 591 | * Output parameters: |
---|
| 592 | * RTEMS_SUCCESSFUL - if successful |
---|
| 593 | * error code - if unsuccessful |
---|
| 594 | */ |
---|
| 595 | |
---|
| 596 | rtems_status_code rtems_task_suspend( |
---|
| 597 | Objects_Id id |
---|
| 598 | ) |
---|
| 599 | { |
---|
| 600 | register Thread_Control *the_thread; |
---|
| 601 | Objects_Locations location; |
---|
| 602 | |
---|
| 603 | the_thread = _Thread_Get( id, &location ); |
---|
| 604 | switch ( location ) { |
---|
| 605 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 606 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 607 | case OBJECTS_REMOTE: |
---|
[3a4ae6c] | 608 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
| 609 | RTEMS_TASKS_MP_SUSPEND_REQUEST, |
---|
| 610 | id, |
---|
| 611 | 0, /* Not used */ |
---|
| 612 | 0, /* Not used */ |
---|
| 613 | 0 /* Not used */ |
---|
[ac7d5ef0] | 614 | ); |
---|
| 615 | case OBJECTS_LOCAL: |
---|
| 616 | if ( !_States_Is_suspended( the_thread->current_state ) ) { |
---|
| 617 | _Thread_Set_state( the_thread, STATES_SUSPENDED ); |
---|
| 618 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 619 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 620 | } |
---|
| 621 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 622 | return RTEMS_ALREADY_SUSPENDED; |
---|
[ac7d5ef0] | 623 | } |
---|
| 624 | |
---|
[3a4ae6c] | 625 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 626 | } |
---|
| 627 | |
---|
| 628 | /*PAGE |
---|
| 629 | * |
---|
| 630 | * rtems_task_resume |
---|
| 631 | * |
---|
| 632 | * This directive will remove the specified thread |
---|
| 633 | * from the suspended state. |
---|
| 634 | * |
---|
| 635 | * Input parameters: |
---|
| 636 | * id - thread id |
---|
| 637 | * |
---|
| 638 | * Output parameters: |
---|
| 639 | * RTEMS_SUCCESSFUL - if successful |
---|
| 640 | * error code - if unsuccessful |
---|
| 641 | */ |
---|
| 642 | |
---|
| 643 | rtems_status_code rtems_task_resume( |
---|
| 644 | Objects_Id id |
---|
| 645 | ) |
---|
| 646 | { |
---|
| 647 | register Thread_Control *the_thread; |
---|
| 648 | Objects_Locations location; |
---|
| 649 | |
---|
| 650 | the_thread = _Thread_Get( id, &location ); |
---|
| 651 | switch ( location ) { |
---|
| 652 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 653 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 654 | case OBJECTS_REMOTE: |
---|
| 655 | return( |
---|
| 656 | _RTEMS_tasks_MP_Send_request_packet( |
---|
| 657 | RTEMS_TASKS_MP_RESUME_REQUEST, |
---|
| 658 | id, |
---|
| 659 | 0, /* Not used */ |
---|
| 660 | 0, /* Not used */ |
---|
| 661 | 0 /* Not used */ |
---|
| 662 | ) |
---|
| 663 | ); |
---|
| 664 | case OBJECTS_LOCAL: |
---|
| 665 | if ( _States_Is_suspended( the_thread->current_state ) ) { |
---|
| 666 | _Thread_Resume( the_thread ); |
---|
| 667 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 668 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 669 | } |
---|
| 670 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 671 | return RTEMS_INCORRECT_STATE; |
---|
[ac7d5ef0] | 672 | } |
---|
| 673 | |
---|
[3a4ae6c] | 674 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 675 | } |
---|
| 676 | |
---|
| 677 | /*PAGE |
---|
| 678 | * |
---|
| 679 | * rtems_task_set_priority |
---|
| 680 | * |
---|
| 681 | * This directive changes the priority of the specified thread. |
---|
| 682 | * The specified thread can be any thread in the system including |
---|
| 683 | * the requesting thread. |
---|
| 684 | * |
---|
| 685 | * Input parameters: |
---|
| 686 | * id - thread id (0 indicates requesting thread) |
---|
| 687 | * new_priority - thread priority (0 indicates current priority) |
---|
| 688 | * old_priority - pointer to previous priority |
---|
| 689 | * |
---|
| 690 | * Output parameters: |
---|
| 691 | * old_priority - previous priority |
---|
| 692 | * RTEMS_SUCCESSFUL - if successful |
---|
| 693 | * error code - if unsuccessful |
---|
| 694 | */ |
---|
| 695 | |
---|
| 696 | rtems_status_code rtems_task_set_priority( |
---|
[7f6a24ab] | 697 | Objects_Id id, |
---|
[ac7d5ef0] | 698 | rtems_task_priority new_priority, |
---|
| 699 | rtems_task_priority *old_priority |
---|
| 700 | ) |
---|
| 701 | { |
---|
| 702 | register Thread_Control *the_thread; |
---|
| 703 | Objects_Locations location; |
---|
| 704 | |
---|
| 705 | if ( new_priority != RTEMS_CURRENT_PRIORITY && |
---|
[3a4ae6c] | 706 | !_RTEMS_tasks_Priority_is_valid( new_priority ) ) |
---|
| 707 | return RTEMS_INVALID_PRIORITY; |
---|
[ac7d5ef0] | 708 | |
---|
| 709 | the_thread = _Thread_Get( id, &location ); |
---|
| 710 | switch ( location ) { |
---|
| 711 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 712 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 713 | case OBJECTS_REMOTE: |
---|
| 714 | _Thread_Executing->Wait.return_argument = old_priority; |
---|
| 715 | return( |
---|
| 716 | _RTEMS_tasks_MP_Send_request_packet( |
---|
| 717 | RTEMS_TASKS_MP_SET_PRIORITY_REQUEST, |
---|
| 718 | id, |
---|
| 719 | new_priority, |
---|
| 720 | 0, /* Not used */ |
---|
| 721 | 0 /* Not used */ |
---|
| 722 | ) |
---|
| 723 | ); |
---|
| 724 | case OBJECTS_LOCAL: |
---|
| 725 | *old_priority = the_thread->current_priority; |
---|
| 726 | if ( new_priority != RTEMS_CURRENT_PRIORITY ) { |
---|
| 727 | the_thread->real_priority = new_priority; |
---|
| 728 | if ( the_thread->resource_count == 0 || |
---|
| 729 | the_thread->current_priority > new_priority ) |
---|
| 730 | _Thread_Change_priority( the_thread, new_priority ); |
---|
| 731 | } |
---|
| 732 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 733 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 734 | } |
---|
| 735 | |
---|
[3a4ae6c] | 736 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 737 | } |
---|
| 738 | |
---|
| 739 | /*PAGE |
---|
| 740 | * |
---|
| 741 | * rtems_task_mode |
---|
| 742 | * |
---|
| 743 | * This directive enables and disables several modes of |
---|
| 744 | * execution for the requesting thread. |
---|
| 745 | * |
---|
| 746 | * Input parameters: |
---|
| 747 | * mode_set - new mode |
---|
| 748 | * mask - mask |
---|
| 749 | * previous_mode_set - address of previous mode set |
---|
| 750 | * |
---|
| 751 | * Output: |
---|
| 752 | * *previous_mode_set - previous mode set |
---|
[3a4ae6c] | 753 | * always return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 754 | */ |
---|
| 755 | |
---|
| 756 | rtems_status_code rtems_task_mode( |
---|
| 757 | rtems_mode mode_set, |
---|
| 758 | rtems_mode mask, |
---|
| 759 | rtems_mode *previous_mode_set |
---|
| 760 | ) |
---|
| 761 | { |
---|
[3a4ae6c] | 762 | Thread_Control *executing; |
---|
| 763 | RTEMS_API_Control *api; |
---|
| 764 | ASR_Information *asr; |
---|
| 765 | boolean is_asr_enabled = FALSE; |
---|
| 766 | boolean needs_asr_dispatching = FALSE; |
---|
| 767 | rtems_mode old_mode; |
---|
| 768 | |
---|
| 769 | executing = _Thread_Executing; |
---|
| 770 | api = executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 771 | asr = &api->Signal; |
---|
| 772 | |
---|
| 773 | old_mode = (executing->is_preemptible) ? RTEMS_PREEMPT : RTEMS_NO_PREEMPT; |
---|
| 774 | old_mode |= (executing->is_timeslice) ? RTEMS_TIMESLICE : RTEMS_NO_TIMESLICE; |
---|
| 775 | old_mode |= (asr->is_enabled) ? RTEMS_ASR : RTEMS_NO_ASR; |
---|
| 776 | old_mode |= _ISR_Get_level(); |
---|
| 777 | |
---|
| 778 | *previous_mode_set = old_mode; |
---|
| 779 | |
---|
| 780 | /* |
---|
| 781 | * These are generic thread scheduling characteristics. |
---|
| 782 | */ |
---|
| 783 | |
---|
| 784 | if ( mask & RTEMS_PREEMPT_MASK ) |
---|
| 785 | executing->is_preemptible = _Modes_Is_preempt(mode_set) ? TRUE : FALSE; |
---|
| 786 | |
---|
| 787 | if ( mask & RTEMS_TIMESLICE_MASK ) |
---|
| 788 | executing->is_timeslice = _Modes_Is_timeslice(mode_set) ? TRUE : FALSE; |
---|
| 789 | |
---|
| 790 | /* |
---|
| 791 | * Set the new interrupt level |
---|
| 792 | */ |
---|
| 793 | |
---|
| 794 | if ( mask & RTEMS_INTERRUPT_MASK ) |
---|
| 795 | _Modes_Set_interrupt_level( mode_set ); |
---|
| 796 | |
---|
| 797 | /* |
---|
| 798 | * This is specific to the RTEMS API |
---|
| 799 | */ |
---|
| 800 | |
---|
| 801 | is_asr_enabled = FALSE; |
---|
| 802 | needs_asr_dispatching = FALSE; |
---|
| 803 | |
---|
| 804 | if ( mask & RTEMS_ASR_MASK ) { |
---|
| 805 | is_asr_enabled = _Modes_Is_asr_disabled( mode_set ) ? FALSE : TRUE; |
---|
| 806 | if ( is_asr_enabled != asr->is_enabled ) { |
---|
| 807 | asr->is_enabled = is_asr_enabled; |
---|
| 808 | _ASR_Swap_signals( asr ); |
---|
| 809 | if ( _ASR_Are_signals_pending( asr ) ) |
---|
| 810 | needs_asr_dispatching = TRUE; |
---|
| 811 | } |
---|
| 812 | } |
---|
| 813 | |
---|
| 814 | if ( _Thread_Evaluate_mode() || needs_asr_dispatching ) |
---|
[ac7d5ef0] | 815 | _Thread_Dispatch(); |
---|
[3a4ae6c] | 816 | |
---|
| 817 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 818 | } |
---|
| 819 | |
---|
| 820 | /*PAGE |
---|
| 821 | * |
---|
| 822 | * rtems_task_get_note |
---|
| 823 | * |
---|
| 824 | * This directive obtains the note from the specified notepad |
---|
| 825 | * of the specified thread. |
---|
| 826 | * |
---|
| 827 | * Input parameters: |
---|
| 828 | * id - thread id |
---|
| 829 | * notepad - notepad number |
---|
| 830 | * note - pointer to note |
---|
| 831 | * |
---|
| 832 | * Output parameters: |
---|
| 833 | * note - filled in if successful |
---|
| 834 | * RTEMS_SUCCESSFUL - if successful |
---|
| 835 | * error code - if unsuccessful |
---|
| 836 | */ |
---|
| 837 | |
---|
| 838 | rtems_status_code rtems_task_get_note( |
---|
| 839 | Objects_Id id, |
---|
| 840 | unsigned32 notepad, |
---|
| 841 | unsigned32 *note |
---|
| 842 | ) |
---|
| 843 | { |
---|
| 844 | register Thread_Control *the_thread; |
---|
| 845 | Objects_Locations location; |
---|
[3a4ae6c] | 846 | RTEMS_API_Control *api; |
---|
[ac7d5ef0] | 847 | |
---|
| 848 | /* |
---|
| 849 | * NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would |
---|
| 850 | * be checking an unsigned number for being negative. |
---|
| 851 | */ |
---|
| 852 | |
---|
| 853 | if ( notepad > RTEMS_NOTEPAD_LAST ) |
---|
[3a4ae6c] | 854 | return RTEMS_INVALID_NUMBER; |
---|
[ac7d5ef0] | 855 | |
---|
| 856 | /* |
---|
| 857 | * Optimize the most likely case to avoid the Thread_Dispatch. |
---|
| 858 | */ |
---|
| 859 | |
---|
| 860 | if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) || |
---|
| 861 | _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) { |
---|
[3a4ae6c] | 862 | api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 863 | *note = api->Notepads[ notepad ]; |
---|
| 864 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 865 | } |
---|
| 866 | |
---|
| 867 | the_thread = _Thread_Get( id, &location ); |
---|
| 868 | switch ( location ) { |
---|
| 869 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 870 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 871 | case OBJECTS_REMOTE: |
---|
| 872 | _Thread_Executing->Wait.return_argument = note; |
---|
| 873 | |
---|
| 874 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
| 875 | RTEMS_TASKS_MP_GET_NOTE_REQUEST, |
---|
| 876 | id, |
---|
| 877 | 0, /* Not used */ |
---|
| 878 | notepad, |
---|
| 879 | 0 /* Not used */ |
---|
| 880 | ); |
---|
| 881 | case OBJECTS_LOCAL: |
---|
[3a4ae6c] | 882 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 883 | *note = api->Notepads[ notepad ]; |
---|
[ac7d5ef0] | 884 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 885 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 886 | } |
---|
| 887 | |
---|
[3a4ae6c] | 888 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 889 | } |
---|
| 890 | |
---|
| 891 | /*PAGE |
---|
| 892 | * |
---|
| 893 | * rtems_task_set_note |
---|
| 894 | * |
---|
| 895 | * This directive sets the specified notepad contents to the given |
---|
| 896 | * note. |
---|
| 897 | * |
---|
| 898 | * Input parameters: |
---|
| 899 | * id - thread id |
---|
| 900 | * notepad - notepad number |
---|
| 901 | * note - note value |
---|
| 902 | * |
---|
| 903 | * Output parameters: |
---|
| 904 | * RTEMS_SUCCESSFUL - if successful |
---|
| 905 | * error code - if unsuccessful |
---|
| 906 | */ |
---|
| 907 | |
---|
| 908 | rtems_status_code rtems_task_set_note( |
---|
| 909 | Objects_Id id, |
---|
| 910 | unsigned32 notepad, |
---|
| 911 | unsigned32 note |
---|
| 912 | ) |
---|
| 913 | { |
---|
| 914 | register Thread_Control *the_thread; |
---|
| 915 | Objects_Locations location; |
---|
[3a4ae6c] | 916 | RTEMS_API_Control *api; |
---|
[ac7d5ef0] | 917 | |
---|
| 918 | /* |
---|
| 919 | * NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would |
---|
| 920 | * be checking an unsigned number for being negative. |
---|
| 921 | */ |
---|
| 922 | |
---|
| 923 | if ( notepad > RTEMS_NOTEPAD_LAST ) |
---|
[3a4ae6c] | 924 | return RTEMS_INVALID_NUMBER; |
---|
[ac7d5ef0] | 925 | |
---|
| 926 | /* |
---|
| 927 | * Optimize the most likely case to avoid the Thread_Dispatch. |
---|
| 928 | */ |
---|
| 929 | |
---|
| 930 | if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) || |
---|
| 931 | _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) { |
---|
[3a4ae6c] | 932 | api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 933 | api->Notepads[ notepad ] = note; |
---|
| 934 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 935 | } |
---|
| 936 | |
---|
| 937 | the_thread = _Thread_Get( id, &location ); |
---|
| 938 | switch ( location ) { |
---|
| 939 | case OBJECTS_ERROR: |
---|
[3a4ae6c] | 940 | return RTEMS_INVALID_ID; |
---|
[ac7d5ef0] | 941 | case OBJECTS_REMOTE: |
---|
| 942 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
| 943 | RTEMS_TASKS_MP_SET_NOTE_REQUEST, |
---|
| 944 | id, |
---|
| 945 | 0, /* Not used */ |
---|
| 946 | notepad, |
---|
| 947 | note |
---|
| 948 | ); |
---|
| 949 | |
---|
| 950 | case OBJECTS_LOCAL: |
---|
[3a4ae6c] | 951 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
---|
| 952 | api->Notepads[ notepad ] = note; |
---|
[ac7d5ef0] | 953 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 954 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 955 | } |
---|
| 956 | |
---|
[3a4ae6c] | 957 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
[ac7d5ef0] | 958 | } |
---|
| 959 | |
---|
| 960 | /*PAGE |
---|
| 961 | * |
---|
| 962 | * rtems_task_wake_after |
---|
| 963 | * |
---|
| 964 | * This directive suspends the requesting thread for the given amount |
---|
| 965 | * of ticks. |
---|
| 966 | * |
---|
| 967 | * Input parameters: |
---|
| 968 | * ticks - number of ticks to wait |
---|
| 969 | * |
---|
| 970 | * Output parameters: |
---|
| 971 | * RTEMS_SUCCESSFUL - always successful |
---|
| 972 | */ |
---|
| 973 | |
---|
| 974 | rtems_status_code rtems_task_wake_after( |
---|
| 975 | rtems_interval ticks |
---|
| 976 | ) |
---|
| 977 | { |
---|
| 978 | if ( ticks == 0 ) { |
---|
| 979 | _Thread_Yield_processor(); |
---|
| 980 | _Thread_Dispatch(); |
---|
| 981 | } else { |
---|
| 982 | _Thread_Disable_dispatch(); |
---|
| 983 | _Thread_Set_state( _Thread_Executing, STATES_DELAYING ); |
---|
| 984 | _Watchdog_Initialize( |
---|
| 985 | &_Thread_Executing->Timer, |
---|
| 986 | _Thread_Delay_ended, |
---|
| 987 | _Thread_Executing->Object.id, |
---|
| 988 | NULL |
---|
| 989 | ); |
---|
| 990 | _Watchdog_Insert_ticks( &_Thread_Executing->Timer, |
---|
| 991 | ticks, WATCHDOG_ACTIVATE_NOW ); |
---|
| 992 | _Thread_Enable_dispatch(); |
---|
| 993 | } |
---|
[3a4ae6c] | 994 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 995 | } |
---|
| 996 | |
---|
| 997 | /*PAGE |
---|
| 998 | * |
---|
| 999 | * rtems_task_wake_when |
---|
| 1000 | * |
---|
| 1001 | * This directive blocks the requesting thread until the given date and |
---|
| 1002 | * time is reached. |
---|
| 1003 | * |
---|
| 1004 | * Input parameters: |
---|
| 1005 | * time_buffer - pointer to the time and date structure |
---|
| 1006 | * |
---|
| 1007 | * Output parameters: |
---|
| 1008 | * RTEMS_SUCCESSFUL - if successful |
---|
| 1009 | * error code - if unsuccessful |
---|
| 1010 | */ |
---|
| 1011 | |
---|
| 1012 | rtems_status_code rtems_task_wake_when( |
---|
| 1013 | rtems_time_of_day *time_buffer |
---|
| 1014 | ) |
---|
| 1015 | { |
---|
[3a4ae6c] | 1016 | Watchdog_Interval seconds; |
---|
[ac7d5ef0] | 1017 | |
---|
| 1018 | if ( !_TOD_Is_set() ) |
---|
[3a4ae6c] | 1019 | return RTEMS_NOT_DEFINED; |
---|
[ac7d5ef0] | 1020 | |
---|
| 1021 | time_buffer->ticks = 0; |
---|
| 1022 | |
---|
[3a4ae6c] | 1023 | if ( !_TOD_Validate( time_buffer ) ) |
---|
| 1024 | return RTEMS_INVALID_CLOCK; |
---|
[ac7d5ef0] | 1025 | |
---|
| 1026 | seconds = _TOD_To_seconds( time_buffer ); |
---|
| 1027 | |
---|
| 1028 | if ( seconds <= _TOD_Seconds_since_epoch ) |
---|
[3a4ae6c] | 1029 | return RTEMS_INVALID_CLOCK; |
---|
[ac7d5ef0] | 1030 | |
---|
| 1031 | _Thread_Disable_dispatch(); |
---|
| 1032 | _Thread_Set_state( _Thread_Executing, STATES_WAITING_FOR_TIME ); |
---|
| 1033 | _Watchdog_Initialize( |
---|
| 1034 | &_Thread_Executing->Timer, |
---|
| 1035 | _Thread_Delay_ended, |
---|
| 1036 | _Thread_Executing->Object.id, |
---|
| 1037 | NULL |
---|
| 1038 | ); |
---|
| 1039 | _Watchdog_Insert_seconds( &_Thread_Executing->Timer, |
---|
| 1040 | seconds - _TOD_Seconds_since_epoch, WATCHDOG_ACTIVATE_NOW ); |
---|
| 1041 | _Thread_Enable_dispatch(); |
---|
[3a4ae6c] | 1042 | return RTEMS_SUCCESSFUL; |
---|
[ac7d5ef0] | 1043 | } |
---|
[3a4ae6c] | 1044 | |
---|
| 1045 | /*PAGE |
---|
| 1046 | * |
---|
| 1047 | * _RTEMS_tasks_Initialize_user_tasks |
---|
| 1048 | * |
---|
| 1049 | * This routine creates and starts all configured user |
---|
| 1050 | * initialzation threads. |
---|
| 1051 | * |
---|
| 1052 | * Input parameters: NONE |
---|
| 1053 | * |
---|
| 1054 | * Output parameters: NONE |
---|
| 1055 | */ |
---|
| 1056 | |
---|
| 1057 | void _RTEMS_tasks_Initialize_user_tasks( void ) |
---|
| 1058 | { |
---|
| 1059 | unsigned32 index; |
---|
| 1060 | unsigned32 maximum; |
---|
| 1061 | rtems_id id; |
---|
| 1062 | rtems_status_code return_value; |
---|
| 1063 | rtems_initialization_tasks_table *user_tasks; |
---|
| 1064 | |
---|
| 1065 | /* |
---|
| 1066 | * NOTE: This is slightly different from the Ada implementation. |
---|
| 1067 | */ |
---|
| 1068 | |
---|
| 1069 | user_tasks = _RTEMS_tasks_User_initialization_tasks; |
---|
| 1070 | maximum = _RTEMS_tasks_Number_of_initialization_tasks; |
---|
| 1071 | |
---|
| 1072 | for ( index=0 ; index < maximum ; index++ ) { |
---|
| 1073 | return_value = rtems_task_create( |
---|
| 1074 | user_tasks[ index ].name, |
---|
| 1075 | user_tasks[ index ].initial_priority, |
---|
| 1076 | user_tasks[ index ].stack_size, |
---|
| 1077 | user_tasks[ index ].mode_set, |
---|
| 1078 | user_tasks[ index ].attribute_set, |
---|
| 1079 | &id |
---|
| 1080 | ); |
---|
| 1081 | |
---|
| 1082 | if ( !rtems_is_status_successful( return_value ) ) |
---|
| 1083 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, return_value ); |
---|
| 1084 | |
---|
| 1085 | return_value = rtems_task_start( |
---|
| 1086 | id, |
---|
| 1087 | user_tasks[ index ].entry_point, |
---|
| 1088 | user_tasks[ index ].argument |
---|
| 1089 | ); |
---|
| 1090 | |
---|
| 1091 | if ( !rtems_is_status_successful( return_value ) ) |
---|
| 1092 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, return_value ); |
---|
| 1093 | } |
---|
| 1094 | } |
---|
| 1095 | |
---|