1 | /* |
---|
2 | * RTEMS Task Manager |
---|
3 | * |
---|
4 | * |
---|
5 | * COPYRIGHT (c) 1989-1998. |
---|
6 | * On-Line Applications Research Corporation (OAR). |
---|
7 | * Copyright assigned to U.S. Government, 1994. |
---|
8 | * |
---|
9 | * The license and distribution terms for this file may be |
---|
10 | * found in the file LICENSE in this distribution or at |
---|
11 | * http://www.OARcorp.com/rtems/license.html. |
---|
12 | * |
---|
13 | * $Id$ |
---|
14 | */ |
---|
15 | |
---|
16 | #include <rtems/system.h> |
---|
17 | #include <rtems/rtems/status.h> |
---|
18 | #include <rtems/rtems/support.h> |
---|
19 | #include <rtems/rtems/modes.h> |
---|
20 | #include <rtems/score/object.h> |
---|
21 | #include <rtems/score/stack.h> |
---|
22 | #include <rtems/score/states.h> |
---|
23 | #include <rtems/rtems/tasks.h> |
---|
24 | #include <rtems/score/thread.h> |
---|
25 | #include <rtems/score/threadq.h> |
---|
26 | #include <rtems/score/tod.h> |
---|
27 | #include <rtems/score/userext.h> |
---|
28 | #include <rtems/score/wkspace.h> |
---|
29 | #include <rtems/score/apiext.h> |
---|
30 | #include <rtems/score/sysstate.h> |
---|
31 | |
---|
32 | /*PAGE |
---|
33 | * |
---|
34 | * _RTEMS_tasks_Create_extension |
---|
35 | * |
---|
36 | * XXX |
---|
37 | */ |
---|
38 | |
---|
39 | boolean _RTEMS_tasks_Create_extension( |
---|
40 | Thread_Control *executing, |
---|
41 | Thread_Control *created |
---|
42 | ) |
---|
43 | { |
---|
44 | RTEMS_API_Control *api; |
---|
45 | |
---|
46 | api = _Workspace_Allocate( sizeof( RTEMS_API_Control ) ); |
---|
47 | |
---|
48 | if ( !api ) |
---|
49 | return FALSE; |
---|
50 | |
---|
51 | created->API_Extensions[ THREAD_API_RTEMS ] = api; |
---|
52 | |
---|
53 | api->pending_events = EVENT_SETS_NONE_PENDING; |
---|
54 | _ASR_Initialize( &api->Signal ); |
---|
55 | return TRUE; |
---|
56 | } |
---|
57 | |
---|
58 | /*PAGE |
---|
59 | * |
---|
60 | * _RTEMS_tasks_Start_extension |
---|
61 | * |
---|
62 | * XXX |
---|
63 | */ |
---|
64 | |
---|
65 | User_extensions_routine _RTEMS_tasks_Start_extension( |
---|
66 | Thread_Control *executing, |
---|
67 | Thread_Control *started |
---|
68 | ) |
---|
69 | { |
---|
70 | RTEMS_API_Control *api; |
---|
71 | |
---|
72 | api = started->API_Extensions[ THREAD_API_RTEMS ]; |
---|
73 | |
---|
74 | api->pending_events = EVENT_SETS_NONE_PENDING; |
---|
75 | |
---|
76 | _ASR_Initialize( &api->Signal ); |
---|
77 | } |
---|
78 | |
---|
79 | /*PAGE |
---|
80 | * |
---|
81 | * _RTEMS_tasks_Delete_extension |
---|
82 | * |
---|
83 | * XXX |
---|
84 | */ |
---|
85 | |
---|
86 | User_extensions_routine _RTEMS_tasks_Delete_extension( |
---|
87 | Thread_Control *executing, |
---|
88 | Thread_Control *deleted |
---|
89 | ) |
---|
90 | { |
---|
91 | (void) _Workspace_Free( deleted->API_Extensions[ THREAD_API_RTEMS ] ); |
---|
92 | |
---|
93 | deleted->API_Extensions[ THREAD_API_RTEMS ] = NULL; |
---|
94 | } |
---|
95 | |
---|
96 | /*PAGE |
---|
97 | * |
---|
98 | * _RTEMS_tasks_Switch_extension |
---|
99 | * |
---|
100 | * XXX |
---|
101 | */ |
---|
102 | |
---|
103 | void _RTEMS_tasks_Switch_extension( |
---|
104 | Thread_Control *executing |
---|
105 | ) |
---|
106 | { |
---|
107 | ISR_Level level; |
---|
108 | RTEMS_API_Control *api; |
---|
109 | ASR_Information *asr; |
---|
110 | rtems_signal_set signal_set; |
---|
111 | Modes_Control prev_mode; |
---|
112 | |
---|
113 | api = executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
114 | asr = &api->Signal; |
---|
115 | |
---|
116 | _ISR_Disable( level ); |
---|
117 | signal_set = asr->signals_posted; |
---|
118 | asr->signals_posted = 0; |
---|
119 | _ISR_Enable( level ); |
---|
120 | |
---|
121 | |
---|
122 | if ( !signal_set ) /* similar to _ASR_Are_signals_pending( asr ) */ |
---|
123 | return; |
---|
124 | |
---|
125 | asr->nest_level += 1; |
---|
126 | rtems_task_mode( asr->mode_set, RTEMS_ALL_MODE_MASKS, &prev_mode ); |
---|
127 | |
---|
128 | (*asr->handler)( signal_set ); |
---|
129 | |
---|
130 | asr->nest_level -= 1; |
---|
131 | rtems_task_mode( prev_mode, RTEMS_ALL_MODE_MASKS, &prev_mode ); |
---|
132 | |
---|
133 | } |
---|
134 | |
---|
135 | API_extensions_Control _RTEMS_tasks_API_extensions = { |
---|
136 | { NULL, NULL }, |
---|
137 | NULL, /* predriver */ |
---|
138 | _RTEMS_tasks_Initialize_user_tasks, /* postdriver */ |
---|
139 | _RTEMS_tasks_Switch_extension /* post switch */ |
---|
140 | }; |
---|
141 | |
---|
142 | User_extensions_Control _RTEMS_tasks_User_extensions = { |
---|
143 | { NULL, NULL }, |
---|
144 | { _RTEMS_tasks_Create_extension, /* create */ |
---|
145 | _RTEMS_tasks_Start_extension, /* start */ |
---|
146 | _RTEMS_tasks_Start_extension, /* restart */ |
---|
147 | _RTEMS_tasks_Delete_extension, /* delete */ |
---|
148 | NULL, /* switch */ |
---|
149 | NULL, /* begin */ |
---|
150 | NULL, /* exitted */ |
---|
151 | NULL /* fatal */ |
---|
152 | } |
---|
153 | }; |
---|
154 | |
---|
155 | /*PAGE |
---|
156 | * |
---|
157 | * _RTEMS_tasks_Manager_initialization |
---|
158 | * |
---|
159 | * This routine initializes all Task Manager related data structures. |
---|
160 | * |
---|
161 | * Input parameters: |
---|
162 | * maximum_tasks - number of tasks to initialize |
---|
163 | * |
---|
164 | * Output parameters: NONE |
---|
165 | */ |
---|
166 | |
---|
167 | void _RTEMS_tasks_Manager_initialization( |
---|
168 | unsigned32 maximum_tasks, |
---|
169 | unsigned32 number_of_initialization_tasks, |
---|
170 | rtems_initialization_tasks_table *user_tasks |
---|
171 | ) |
---|
172 | { |
---|
173 | |
---|
174 | _RTEMS_tasks_Number_of_initialization_tasks = number_of_initialization_tasks; |
---|
175 | _RTEMS_tasks_User_initialization_tasks = user_tasks; |
---|
176 | |
---|
177 | /* |
---|
178 | * There may not be any RTEMS initialization tasks configured. |
---|
179 | */ |
---|
180 | |
---|
181 | #if 0 |
---|
182 | if ( user_tasks == NULL || number_of_initialization_tasks == 0 ) |
---|
183 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, RTEMS_TOO_MANY ); |
---|
184 | #endif |
---|
185 | |
---|
186 | _Objects_Initialize_information( |
---|
187 | &_RTEMS_tasks_Information, |
---|
188 | OBJECTS_RTEMS_TASKS, |
---|
189 | TRUE, |
---|
190 | maximum_tasks, |
---|
191 | sizeof( Thread_Control ), |
---|
192 | FALSE, |
---|
193 | RTEMS_MAXIMUM_NAME_LENGTH, |
---|
194 | TRUE |
---|
195 | ); |
---|
196 | |
---|
197 | /* |
---|
198 | * Add all the extensions for this API |
---|
199 | */ |
---|
200 | |
---|
201 | _User_extensions_Add_API_set( &_RTEMS_tasks_User_extensions ); |
---|
202 | |
---|
203 | _API_extensions_Add( &_RTEMS_tasks_API_extensions ); |
---|
204 | |
---|
205 | /* |
---|
206 | * Register the MP Process Packet routine. |
---|
207 | */ |
---|
208 | |
---|
209 | #if defined(RTEMS_MULTIPROCESSING) |
---|
210 | _MPCI_Register_packet_processor( |
---|
211 | MP_PACKET_TASKS, |
---|
212 | _RTEMS_tasks_MP_Process_packet |
---|
213 | ); |
---|
214 | #endif |
---|
215 | |
---|
216 | } |
---|
217 | |
---|
218 | /*PAGE |
---|
219 | * |
---|
220 | * rtems_task_create |
---|
221 | * |
---|
222 | * This directive creates a thread by allocating and initializing a |
---|
223 | * thread control block and a stack. The newly created thread is |
---|
224 | * placed in the dormant state. |
---|
225 | * |
---|
226 | * Input parameters: |
---|
227 | * name - user defined thread name |
---|
228 | * initial_priority - thread priority |
---|
229 | * stack_size - stack size in bytes |
---|
230 | * initial_modes - initial thread mode |
---|
231 | * attribute_set - thread attributes |
---|
232 | * id - pointer to thread id |
---|
233 | * |
---|
234 | * Output parameters: |
---|
235 | * id - thread id |
---|
236 | * RTEMS_SUCCESSFUL - if successful |
---|
237 | * error code - if unsuccessful |
---|
238 | */ |
---|
239 | |
---|
240 | rtems_status_code rtems_task_create( |
---|
241 | rtems_name name, |
---|
242 | rtems_task_priority initial_priority, |
---|
243 | unsigned32 stack_size, |
---|
244 | rtems_mode initial_modes, |
---|
245 | rtems_attribute attribute_set, |
---|
246 | Objects_Id *id |
---|
247 | ) |
---|
248 | { |
---|
249 | register Thread_Control *the_thread; |
---|
250 | boolean is_fp; |
---|
251 | #if defined(RTEMS_MULTIPROCESSING) |
---|
252 | Objects_MP_Control *the_global_object = NULL; |
---|
253 | boolean is_global; |
---|
254 | #endif |
---|
255 | boolean status; |
---|
256 | rtems_attribute the_attribute_set; |
---|
257 | Priority_Control core_priority; |
---|
258 | RTEMS_API_Control *api; |
---|
259 | ASR_Information *asr; |
---|
260 | |
---|
261 | |
---|
262 | if ( !rtems_is_name_valid( name ) ) |
---|
263 | return RTEMS_INVALID_NAME; |
---|
264 | |
---|
265 | /* |
---|
266 | * Core Thread Initialize insures we get the minimum amount of |
---|
267 | * stack space. |
---|
268 | */ |
---|
269 | |
---|
270 | #if 0 |
---|
271 | if ( !_Stack_Is_enough( stack_size ) ) |
---|
272 | return RTEMS_INVALID_SIZE; |
---|
273 | #endif |
---|
274 | |
---|
275 | /* |
---|
276 | * Fix the attribute set to match the attributes which |
---|
277 | * this processor (1) requires and (2) is able to support. |
---|
278 | * First add in the required flags for attribute_set |
---|
279 | * Typically this might include FP if the platform |
---|
280 | * or application required all tasks to be fp aware. |
---|
281 | * Then turn off the requested bits which are not supported. |
---|
282 | */ |
---|
283 | |
---|
284 | the_attribute_set = _Attributes_Set( attribute_set, ATTRIBUTES_REQUIRED ); |
---|
285 | the_attribute_set = |
---|
286 | _Attributes_Clear( the_attribute_set, ATTRIBUTES_NOT_SUPPORTED ); |
---|
287 | |
---|
288 | if ( _Attributes_Is_floating_point( the_attribute_set ) ) |
---|
289 | is_fp = TRUE; |
---|
290 | else |
---|
291 | is_fp = FALSE; |
---|
292 | |
---|
293 | /* |
---|
294 | * Validate the RTEMS API priority and convert it to the core priority range. |
---|
295 | */ |
---|
296 | |
---|
297 | if ( !_Attributes_Is_system_task( the_attribute_set ) ) { |
---|
298 | if ( !_RTEMS_tasks_Priority_is_valid( initial_priority ) ) |
---|
299 | return RTEMS_INVALID_PRIORITY; |
---|
300 | } |
---|
301 | |
---|
302 | core_priority = _RTEMS_tasks_Priority_to_Core( initial_priority ); |
---|
303 | |
---|
304 | #if defined(RTEMS_MULTIPROCESSING) |
---|
305 | if ( _Attributes_Is_global( the_attribute_set ) ) { |
---|
306 | |
---|
307 | is_global = TRUE; |
---|
308 | |
---|
309 | if ( !_System_state_Is_multiprocessing ) |
---|
310 | return RTEMS_MP_NOT_CONFIGURED; |
---|
311 | |
---|
312 | } else |
---|
313 | is_global = FALSE; |
---|
314 | #endif |
---|
315 | |
---|
316 | /* |
---|
317 | * Make sure system is MP if this task is global |
---|
318 | */ |
---|
319 | |
---|
320 | /* |
---|
321 | * Disable dispatch for protection |
---|
322 | */ |
---|
323 | |
---|
324 | _Thread_Disable_dispatch(); |
---|
325 | |
---|
326 | /* |
---|
327 | * Allocate the thread control block and -- if the task is global -- |
---|
328 | * allocate a global object control block. |
---|
329 | * |
---|
330 | * NOTE: This routine does not use the combined allocate and open |
---|
331 | * global object routine because this results in a lack of |
---|
332 | * control over when memory is allocated and can be freed in |
---|
333 | * the event of an error. |
---|
334 | */ |
---|
335 | |
---|
336 | the_thread = _RTEMS_tasks_Allocate(); |
---|
337 | |
---|
338 | if ( !the_thread ) { |
---|
339 | _Thread_Enable_dispatch(); |
---|
340 | return RTEMS_TOO_MANY; |
---|
341 | } |
---|
342 | |
---|
343 | #if defined(RTEMS_MULTIPROCESSING) |
---|
344 | if ( is_global ) { |
---|
345 | the_global_object = _Objects_MP_Allocate_global_object(); |
---|
346 | |
---|
347 | if ( _Objects_MP_Is_null_global_object( the_global_object ) ) { |
---|
348 | _RTEMS_tasks_Free( the_thread ); |
---|
349 | _Thread_Enable_dispatch(); |
---|
350 | return RTEMS_TOO_MANY; |
---|
351 | } |
---|
352 | } |
---|
353 | #endif |
---|
354 | |
---|
355 | /* |
---|
356 | * Initialize the core thread for this task. |
---|
357 | */ |
---|
358 | |
---|
359 | status = _Thread_Initialize( |
---|
360 | &_RTEMS_tasks_Information, |
---|
361 | the_thread, |
---|
362 | NULL, |
---|
363 | stack_size, |
---|
364 | is_fp, |
---|
365 | core_priority, |
---|
366 | _Modes_Is_preempt(initial_modes) ? TRUE : FALSE, |
---|
367 | _Modes_Is_timeslice(initial_modes) ? |
---|
368 | THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE : |
---|
369 | THREAD_CPU_BUDGET_ALGORITHM_NONE, |
---|
370 | NULL, /* no budget algorithm callout */ |
---|
371 | _Modes_Get_interrupt_level(initial_modes), |
---|
372 | &name |
---|
373 | ); |
---|
374 | |
---|
375 | if ( !status ) { |
---|
376 | #if defined(RTEMS_MULTIPROCESSING) |
---|
377 | if ( is_global ) |
---|
378 | _Objects_MP_Free_global_object( the_global_object ); |
---|
379 | #endif |
---|
380 | _RTEMS_tasks_Free( the_thread ); |
---|
381 | _Thread_Enable_dispatch(); |
---|
382 | return RTEMS_UNSATISFIED; |
---|
383 | } |
---|
384 | |
---|
385 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
---|
386 | asr = &api->Signal; |
---|
387 | |
---|
388 | asr->is_enabled = _Modes_Is_asr_disabled(initial_modes) ? FALSE : TRUE; |
---|
389 | |
---|
390 | *id = the_thread->Object.id; |
---|
391 | |
---|
392 | #if defined(RTEMS_MULTIPROCESSING) |
---|
393 | if ( is_global ) { |
---|
394 | |
---|
395 | the_thread->is_global = TRUE; |
---|
396 | |
---|
397 | _Objects_MP_Open( |
---|
398 | &_RTEMS_tasks_Information, |
---|
399 | the_global_object, |
---|
400 | name, |
---|
401 | the_thread->Object.id |
---|
402 | ); |
---|
403 | |
---|
404 | _RTEMS_tasks_MP_Send_process_packet( |
---|
405 | RTEMS_TASKS_MP_ANNOUNCE_CREATE, |
---|
406 | the_thread->Object.id, |
---|
407 | name |
---|
408 | ); |
---|
409 | |
---|
410 | } |
---|
411 | #endif |
---|
412 | |
---|
413 | _Thread_Enable_dispatch(); |
---|
414 | return RTEMS_SUCCESSFUL; |
---|
415 | } |
---|
416 | |
---|
417 | /*PAGE |
---|
418 | * |
---|
419 | * rtems_task_ident |
---|
420 | * |
---|
421 | * This directive returns the system ID associated with |
---|
422 | * the thread name. |
---|
423 | * |
---|
424 | * Input parameters: |
---|
425 | * name - user defined thread name |
---|
426 | * node - node(s) to be searched |
---|
427 | * id - pointer to thread id |
---|
428 | * |
---|
429 | * Output parameters: |
---|
430 | * *id - thread id |
---|
431 | * RTEMS_SUCCESSFUL - if successful |
---|
432 | * error code - if unsuccessful |
---|
433 | */ |
---|
434 | |
---|
435 | rtems_status_code rtems_task_ident( |
---|
436 | rtems_name name, |
---|
437 | unsigned32 node, |
---|
438 | Objects_Id *id |
---|
439 | ) |
---|
440 | { |
---|
441 | Objects_Name_to_id_errors status; |
---|
442 | |
---|
443 | if ( name == OBJECTS_ID_OF_SELF ) { |
---|
444 | *id = _Thread_Executing->Object.id; |
---|
445 | return RTEMS_SUCCESSFUL; |
---|
446 | } |
---|
447 | |
---|
448 | status = _Objects_Name_to_id( &_RTEMS_tasks_Information, &name, node, id ); |
---|
449 | |
---|
450 | return _Status_Object_name_errors_to_status[ status ]; |
---|
451 | } |
---|
452 | |
---|
453 | /*PAGE |
---|
454 | * |
---|
455 | * rtems_task_start |
---|
456 | * |
---|
457 | * This directive readies the thread identified by the "id" |
---|
458 | * based on its current priorty, to await execution. A thread |
---|
459 | * can be started only from the dormant state. |
---|
460 | * |
---|
461 | * Input parameters: |
---|
462 | * id - thread id |
---|
463 | * entry_point - start execution address of thread |
---|
464 | * argument - thread argument |
---|
465 | * |
---|
466 | * Output parameters: |
---|
467 | * RTEMS_SUCCESSFUL - if successful |
---|
468 | * error code - if unsuccessful |
---|
469 | */ |
---|
470 | |
---|
471 | rtems_status_code rtems_task_start( |
---|
472 | rtems_id id, |
---|
473 | rtems_task_entry entry_point, |
---|
474 | unsigned32 argument |
---|
475 | ) |
---|
476 | { |
---|
477 | register Thread_Control *the_thread; |
---|
478 | Objects_Locations location; |
---|
479 | |
---|
480 | if ( entry_point == NULL ) |
---|
481 | return RTEMS_INVALID_ADDRESS; |
---|
482 | |
---|
483 | the_thread = _Thread_Get( id, &location ); |
---|
484 | switch ( location ) { |
---|
485 | |
---|
486 | case OBJECTS_REMOTE: |
---|
487 | #if defined(RTEMS_MULTIPROCESSING) |
---|
488 | _Thread_Dispatch(); |
---|
489 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
---|
490 | #endif |
---|
491 | |
---|
492 | case OBJECTS_ERROR: |
---|
493 | return RTEMS_INVALID_ID; |
---|
494 | |
---|
495 | case OBJECTS_LOCAL: |
---|
496 | if ( _Thread_Start( |
---|
497 | the_thread, THREAD_START_NUMERIC, entry_point, NULL, argument ) ) { |
---|
498 | _Thread_Enable_dispatch(); |
---|
499 | return RTEMS_SUCCESSFUL; |
---|
500 | } |
---|
501 | _Thread_Enable_dispatch(); |
---|
502 | return RTEMS_INCORRECT_STATE; |
---|
503 | } |
---|
504 | |
---|
505 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
506 | } |
---|
507 | |
---|
508 | /*PAGE |
---|
509 | * |
---|
510 | * rtems_task_restart |
---|
511 | * |
---|
512 | * This directive readies the specified thread. It restores |
---|
513 | * the thread environment to the original values established |
---|
514 | * at thread creation and start time. A thread can be restarted |
---|
515 | * from any state except the dormant state. |
---|
516 | * |
---|
517 | * Input parameters: |
---|
518 | * id - thread id |
---|
519 | * argument - thread argument |
---|
520 | * |
---|
521 | * Output parameters: |
---|
522 | * RTEMS_SUCCESSFUL - if successful |
---|
523 | * error code - if unsuccessful |
---|
524 | */ |
---|
525 | |
---|
526 | rtems_status_code rtems_task_restart( |
---|
527 | Objects_Id id, |
---|
528 | unsigned32 argument |
---|
529 | ) |
---|
530 | { |
---|
531 | register Thread_Control *the_thread; |
---|
532 | Objects_Locations location; |
---|
533 | |
---|
534 | the_thread = _Thread_Get( id, &location ); |
---|
535 | switch ( location ) { |
---|
536 | |
---|
537 | case OBJECTS_REMOTE: |
---|
538 | #if defined(RTEMS_MULTIPROCESSING) |
---|
539 | _Thread_Dispatch(); |
---|
540 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
---|
541 | #endif |
---|
542 | |
---|
543 | case OBJECTS_ERROR: |
---|
544 | return RTEMS_INVALID_ID; |
---|
545 | |
---|
546 | case OBJECTS_LOCAL: |
---|
547 | if ( _Thread_Restart( the_thread, NULL, argument ) ) { |
---|
548 | _Thread_Enable_dispatch(); |
---|
549 | return RTEMS_SUCCESSFUL; |
---|
550 | } |
---|
551 | _Thread_Enable_dispatch(); |
---|
552 | return RTEMS_INCORRECT_STATE; |
---|
553 | } |
---|
554 | |
---|
555 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
556 | } |
---|
557 | |
---|
558 | /*PAGE |
---|
559 | * |
---|
560 | * rtems_task_delete |
---|
561 | * |
---|
562 | * This directive allows a thread to delete itself or the thread |
---|
563 | * identified in the id field. The executive halts execution |
---|
564 | * of the thread and frees the thread control block. |
---|
565 | * |
---|
566 | * Input parameters: |
---|
567 | * id - thread id |
---|
568 | * |
---|
569 | * Output parameters: |
---|
570 | * nothing - if id is the requesting thread (always succeeds) |
---|
571 | * RTEMS_SUCCESSFUL - if successful and id is |
---|
572 | * not the requesting thread |
---|
573 | * error code - if unsuccessful |
---|
574 | */ |
---|
575 | |
---|
576 | rtems_status_code rtems_task_delete( |
---|
577 | Objects_Id id |
---|
578 | ) |
---|
579 | { |
---|
580 | register Thread_Control *the_thread; |
---|
581 | Objects_Locations location; |
---|
582 | Objects_Information *the_information; |
---|
583 | |
---|
584 | the_thread = _Thread_Get( id, &location ); |
---|
585 | switch ( location ) { |
---|
586 | |
---|
587 | case OBJECTS_REMOTE: |
---|
588 | #if defined(RTEMS_MULTIPROCESSING) |
---|
589 | _Thread_Dispatch(); |
---|
590 | return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; |
---|
591 | #endif |
---|
592 | |
---|
593 | case OBJECTS_ERROR: |
---|
594 | return RTEMS_INVALID_ID; |
---|
595 | |
---|
596 | case OBJECTS_LOCAL: |
---|
597 | the_information = _Objects_Get_information( the_thread->Object.id ); |
---|
598 | |
---|
599 | if ( !the_information ) { |
---|
600 | _Thread_Enable_dispatch(); |
---|
601 | return RTEMS_INVALID_ID; |
---|
602 | /* This should never happen if _Thread_Get() works right */ |
---|
603 | } |
---|
604 | |
---|
605 | _Thread_Close( the_information, the_thread ); |
---|
606 | |
---|
607 | _RTEMS_tasks_Free( the_thread ); |
---|
608 | |
---|
609 | #if defined(RTEMS_MULTIPROCESSING) |
---|
610 | if ( the_thread->is_global ) { |
---|
611 | |
---|
612 | _Objects_MP_Close( &_RTEMS_tasks_Information, the_thread->Object.id ); |
---|
613 | |
---|
614 | _RTEMS_tasks_MP_Send_process_packet( |
---|
615 | RTEMS_TASKS_MP_ANNOUNCE_DELETE, |
---|
616 | the_thread->Object.id, |
---|
617 | 0 /* Not used */ |
---|
618 | ); |
---|
619 | } |
---|
620 | #endif |
---|
621 | |
---|
622 | _Thread_Enable_dispatch(); |
---|
623 | return RTEMS_SUCCESSFUL; |
---|
624 | } |
---|
625 | |
---|
626 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
627 | } |
---|
628 | |
---|
629 | /*PAGE |
---|
630 | * |
---|
631 | * rtems_task_suspend |
---|
632 | * |
---|
633 | * This directive will place the specified thread in the "suspended" |
---|
634 | * state. Note that the suspended state can be in addition to |
---|
635 | * other waiting states. |
---|
636 | * |
---|
637 | * Input parameters: |
---|
638 | * id - thread id |
---|
639 | * |
---|
640 | * Output parameters: |
---|
641 | * RTEMS_SUCCESSFUL - if successful |
---|
642 | * error code - if unsuccessful |
---|
643 | */ |
---|
644 | |
---|
645 | rtems_status_code rtems_task_suspend( |
---|
646 | Objects_Id id |
---|
647 | ) |
---|
648 | { |
---|
649 | register Thread_Control *the_thread; |
---|
650 | Objects_Locations location; |
---|
651 | |
---|
652 | the_thread = _Thread_Get( id, &location ); |
---|
653 | switch ( location ) { |
---|
654 | |
---|
655 | case OBJECTS_REMOTE: |
---|
656 | #if defined(RTEMS_MULTIPROCESSING) |
---|
657 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
658 | RTEMS_TASKS_MP_SUSPEND_REQUEST, |
---|
659 | id, |
---|
660 | 0, /* Not used */ |
---|
661 | 0, /* Not used */ |
---|
662 | 0 /* Not used */ |
---|
663 | ); |
---|
664 | #endif |
---|
665 | |
---|
666 | case OBJECTS_ERROR: |
---|
667 | return RTEMS_INVALID_ID; |
---|
668 | |
---|
669 | case OBJECTS_LOCAL: |
---|
670 | if ( !_States_Is_suspended( the_thread->current_state ) ) { |
---|
671 | _Thread_Set_state( the_thread, STATES_SUSPENDED ); |
---|
672 | _Thread_Enable_dispatch(); |
---|
673 | return RTEMS_SUCCESSFUL; |
---|
674 | } |
---|
675 | _Thread_Enable_dispatch(); |
---|
676 | return RTEMS_ALREADY_SUSPENDED; |
---|
677 | } |
---|
678 | |
---|
679 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
680 | } |
---|
681 | |
---|
682 | /*PAGE |
---|
683 | * |
---|
684 | * rtems_task_resume |
---|
685 | * |
---|
686 | * This directive will remove the specified thread |
---|
687 | * from the suspended state. |
---|
688 | * |
---|
689 | * Input parameters: |
---|
690 | * id - thread id |
---|
691 | * |
---|
692 | * Output parameters: |
---|
693 | * RTEMS_SUCCESSFUL - if successful |
---|
694 | * error code - if unsuccessful |
---|
695 | */ |
---|
696 | |
---|
697 | rtems_status_code rtems_task_resume( |
---|
698 | Objects_Id id |
---|
699 | ) |
---|
700 | { |
---|
701 | register Thread_Control *the_thread; |
---|
702 | Objects_Locations location; |
---|
703 | |
---|
704 | the_thread = _Thread_Get( id, &location ); |
---|
705 | switch ( location ) { |
---|
706 | |
---|
707 | case OBJECTS_REMOTE: |
---|
708 | #if defined(RTEMS_MULTIPROCESSING) |
---|
709 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
710 | RTEMS_TASKS_MP_RESUME_REQUEST, |
---|
711 | id, |
---|
712 | 0, /* Not used */ |
---|
713 | 0, /* Not used */ |
---|
714 | 0 /* Not used */ |
---|
715 | ); |
---|
716 | #endif |
---|
717 | |
---|
718 | case OBJECTS_ERROR: |
---|
719 | return RTEMS_INVALID_ID; |
---|
720 | |
---|
721 | case OBJECTS_LOCAL: |
---|
722 | if ( _States_Is_suspended( the_thread->current_state ) ) { |
---|
723 | _Thread_Resume( the_thread ); |
---|
724 | _Thread_Enable_dispatch(); |
---|
725 | return RTEMS_SUCCESSFUL; |
---|
726 | } |
---|
727 | _Thread_Enable_dispatch(); |
---|
728 | return RTEMS_INCORRECT_STATE; |
---|
729 | } |
---|
730 | |
---|
731 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
732 | } |
---|
733 | |
---|
734 | /*PAGE |
---|
735 | * |
---|
736 | * rtems_task_set_priority |
---|
737 | * |
---|
738 | * This directive changes the priority of the specified thread. |
---|
739 | * The specified thread can be any thread in the system including |
---|
740 | * the requesting thread. |
---|
741 | * |
---|
742 | * Input parameters: |
---|
743 | * id - thread id (0 indicates requesting thread) |
---|
744 | * new_priority - thread priority (0 indicates current priority) |
---|
745 | * old_priority - pointer to previous priority |
---|
746 | * |
---|
747 | * Output parameters: |
---|
748 | * old_priority - previous priority |
---|
749 | * RTEMS_SUCCESSFUL - if successful |
---|
750 | * error code - if unsuccessful |
---|
751 | */ |
---|
752 | |
---|
753 | rtems_status_code rtems_task_set_priority( |
---|
754 | Objects_Id id, |
---|
755 | rtems_task_priority new_priority, |
---|
756 | rtems_task_priority *old_priority |
---|
757 | ) |
---|
758 | { |
---|
759 | register Thread_Control *the_thread; |
---|
760 | Objects_Locations location; |
---|
761 | |
---|
762 | if ( new_priority != RTEMS_CURRENT_PRIORITY && |
---|
763 | !_RTEMS_tasks_Priority_is_valid( new_priority ) ) |
---|
764 | return RTEMS_INVALID_PRIORITY; |
---|
765 | |
---|
766 | the_thread = _Thread_Get( id, &location ); |
---|
767 | switch ( location ) { |
---|
768 | |
---|
769 | case OBJECTS_REMOTE: |
---|
770 | #if defined(RTEMS_MULTIPROCESSING) |
---|
771 | _Thread_Executing->Wait.return_argument = old_priority; |
---|
772 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
773 | RTEMS_TASKS_MP_SET_PRIORITY_REQUEST, |
---|
774 | id, |
---|
775 | new_priority, |
---|
776 | 0, /* Not used */ |
---|
777 | 0 /* Not used */ |
---|
778 | ); |
---|
779 | #endif |
---|
780 | |
---|
781 | case OBJECTS_ERROR: |
---|
782 | return RTEMS_INVALID_ID; |
---|
783 | |
---|
784 | case OBJECTS_LOCAL: |
---|
785 | *old_priority = the_thread->current_priority; |
---|
786 | if ( new_priority != RTEMS_CURRENT_PRIORITY ) { |
---|
787 | the_thread->real_priority = new_priority; |
---|
788 | if ( the_thread->resource_count == 0 || |
---|
789 | the_thread->current_priority > new_priority ) |
---|
790 | _Thread_Change_priority( the_thread, new_priority, FALSE ); |
---|
791 | } |
---|
792 | _Thread_Enable_dispatch(); |
---|
793 | return RTEMS_SUCCESSFUL; |
---|
794 | } |
---|
795 | |
---|
796 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
797 | } |
---|
798 | |
---|
799 | /*PAGE |
---|
800 | * |
---|
801 | * rtems_task_mode |
---|
802 | * |
---|
803 | * This directive enables and disables several modes of |
---|
804 | * execution for the requesting thread. |
---|
805 | * |
---|
806 | * Input parameters: |
---|
807 | * mode_set - new mode |
---|
808 | * mask - mask |
---|
809 | * previous_mode_set - address of previous mode set |
---|
810 | * |
---|
811 | * Output: |
---|
812 | * *previous_mode_set - previous mode set |
---|
813 | * always return RTEMS_SUCCESSFUL; |
---|
814 | */ |
---|
815 | |
---|
816 | rtems_status_code rtems_task_mode( |
---|
817 | rtems_mode mode_set, |
---|
818 | rtems_mode mask, |
---|
819 | rtems_mode *previous_mode_set |
---|
820 | ) |
---|
821 | { |
---|
822 | Thread_Control *executing; |
---|
823 | RTEMS_API_Control *api; |
---|
824 | ASR_Information *asr; |
---|
825 | boolean is_asr_enabled = FALSE; |
---|
826 | boolean needs_asr_dispatching = FALSE; |
---|
827 | rtems_mode old_mode; |
---|
828 | |
---|
829 | executing = _Thread_Executing; |
---|
830 | api = executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
831 | asr = &api->Signal; |
---|
832 | |
---|
833 | old_mode = (executing->is_preemptible) ? RTEMS_PREEMPT : RTEMS_NO_PREEMPT; |
---|
834 | |
---|
835 | if ( executing->budget_algorithm == THREAD_CPU_BUDGET_ALGORITHM_NONE ) |
---|
836 | old_mode |= RTEMS_NO_TIMESLICE; |
---|
837 | else |
---|
838 | old_mode |= RTEMS_TIMESLICE; |
---|
839 | |
---|
840 | old_mode |= (asr->is_enabled) ? RTEMS_ASR : RTEMS_NO_ASR; |
---|
841 | old_mode |= _ISR_Get_level(); |
---|
842 | |
---|
843 | *previous_mode_set = old_mode; |
---|
844 | |
---|
845 | /* |
---|
846 | * These are generic thread scheduling characteristics. |
---|
847 | */ |
---|
848 | |
---|
849 | if ( mask & RTEMS_PREEMPT_MASK ) |
---|
850 | executing->is_preemptible = _Modes_Is_preempt(mode_set) ? TRUE : FALSE; |
---|
851 | |
---|
852 | if ( mask & RTEMS_TIMESLICE_MASK ) { |
---|
853 | if ( _Modes_Is_timeslice(mode_set) ) |
---|
854 | executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE; |
---|
855 | else |
---|
856 | executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
---|
857 | } |
---|
858 | |
---|
859 | /* |
---|
860 | * Set the new interrupt level |
---|
861 | */ |
---|
862 | |
---|
863 | if ( mask & RTEMS_INTERRUPT_MASK ) |
---|
864 | _Modes_Set_interrupt_level( mode_set ); |
---|
865 | |
---|
866 | /* |
---|
867 | * This is specific to the RTEMS API |
---|
868 | */ |
---|
869 | |
---|
870 | is_asr_enabled = FALSE; |
---|
871 | needs_asr_dispatching = FALSE; |
---|
872 | |
---|
873 | if ( mask & RTEMS_ASR_MASK ) { |
---|
874 | is_asr_enabled = _Modes_Is_asr_disabled( mode_set ) ? FALSE : TRUE; |
---|
875 | if ( is_asr_enabled != asr->is_enabled ) { |
---|
876 | asr->is_enabled = is_asr_enabled; |
---|
877 | _ASR_Swap_signals( asr ); |
---|
878 | if ( _ASR_Are_signals_pending( asr ) ) { |
---|
879 | needs_asr_dispatching = TRUE; |
---|
880 | executing->do_post_task_switch_extension = TRUE; |
---|
881 | } |
---|
882 | } |
---|
883 | } |
---|
884 | |
---|
885 | if ( _Thread_Evaluate_mode() || needs_asr_dispatching ) |
---|
886 | _Thread_Dispatch(); |
---|
887 | |
---|
888 | return RTEMS_SUCCESSFUL; |
---|
889 | } |
---|
890 | |
---|
891 | /*PAGE |
---|
892 | * |
---|
893 | * rtems_task_get_note |
---|
894 | * |
---|
895 | * This directive obtains the note from the specified notepad |
---|
896 | * of the specified thread. |
---|
897 | * |
---|
898 | * Input parameters: |
---|
899 | * id - thread id |
---|
900 | * notepad - notepad number |
---|
901 | * note - pointer to note |
---|
902 | * |
---|
903 | * Output parameters: |
---|
904 | * note - filled in if successful |
---|
905 | * RTEMS_SUCCESSFUL - if successful |
---|
906 | * error code - if unsuccessful |
---|
907 | */ |
---|
908 | |
---|
909 | rtems_status_code rtems_task_get_note( |
---|
910 | Objects_Id id, |
---|
911 | unsigned32 notepad, |
---|
912 | unsigned32 *note |
---|
913 | ) |
---|
914 | { |
---|
915 | register Thread_Control *the_thread; |
---|
916 | Objects_Locations location; |
---|
917 | RTEMS_API_Control *api; |
---|
918 | |
---|
919 | /* |
---|
920 | * NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would |
---|
921 | * be checking an unsigned number for being negative. |
---|
922 | */ |
---|
923 | |
---|
924 | if ( notepad > RTEMS_NOTEPAD_LAST ) |
---|
925 | return RTEMS_INVALID_NUMBER; |
---|
926 | |
---|
927 | /* |
---|
928 | * Optimize the most likely case to avoid the Thread_Dispatch. |
---|
929 | */ |
---|
930 | |
---|
931 | if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) || |
---|
932 | _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) { |
---|
933 | api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
934 | *note = api->Notepads[ notepad ]; |
---|
935 | return RTEMS_SUCCESSFUL; |
---|
936 | } |
---|
937 | |
---|
938 | the_thread = _Thread_Get( id, &location ); |
---|
939 | switch ( location ) { |
---|
940 | |
---|
941 | case OBJECTS_REMOTE: |
---|
942 | #if defined(RTEMS_MULTIPROCESSING) |
---|
943 | _Thread_Executing->Wait.return_argument = note; |
---|
944 | |
---|
945 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
946 | RTEMS_TASKS_MP_GET_NOTE_REQUEST, |
---|
947 | id, |
---|
948 | 0, /* Not used */ |
---|
949 | notepad, |
---|
950 | 0 /* Not used */ |
---|
951 | ); |
---|
952 | #endif |
---|
953 | |
---|
954 | case OBJECTS_ERROR: |
---|
955 | return RTEMS_INVALID_ID; |
---|
956 | |
---|
957 | case OBJECTS_LOCAL: |
---|
958 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
---|
959 | *note = api->Notepads[ notepad ]; |
---|
960 | _Thread_Enable_dispatch(); |
---|
961 | return RTEMS_SUCCESSFUL; |
---|
962 | } |
---|
963 | |
---|
964 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
965 | } |
---|
966 | |
---|
967 | /*PAGE |
---|
968 | * |
---|
969 | * rtems_task_set_note |
---|
970 | * |
---|
971 | * This directive sets the specified notepad contents to the given |
---|
972 | * note. |
---|
973 | * |
---|
974 | * Input parameters: |
---|
975 | * id - thread id |
---|
976 | * notepad - notepad number |
---|
977 | * note - note value |
---|
978 | * |
---|
979 | * Output parameters: |
---|
980 | * RTEMS_SUCCESSFUL - if successful |
---|
981 | * error code - if unsuccessful |
---|
982 | */ |
---|
983 | |
---|
984 | rtems_status_code rtems_task_set_note( |
---|
985 | Objects_Id id, |
---|
986 | unsigned32 notepad, |
---|
987 | unsigned32 note |
---|
988 | ) |
---|
989 | { |
---|
990 | register Thread_Control *the_thread; |
---|
991 | Objects_Locations location; |
---|
992 | RTEMS_API_Control *api; |
---|
993 | |
---|
994 | /* |
---|
995 | * NOTE: There is no check for < RTEMS_NOTEPAD_FIRST because that would |
---|
996 | * be checking an unsigned number for being negative. |
---|
997 | */ |
---|
998 | |
---|
999 | if ( notepad > RTEMS_NOTEPAD_LAST ) |
---|
1000 | return RTEMS_INVALID_NUMBER; |
---|
1001 | |
---|
1002 | /* |
---|
1003 | * Optimize the most likely case to avoid the Thread_Dispatch. |
---|
1004 | */ |
---|
1005 | |
---|
1006 | if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) || |
---|
1007 | _Objects_Are_ids_equal( id, _Thread_Executing->Object.id ) ) { |
---|
1008 | api = _Thread_Executing->API_Extensions[ THREAD_API_RTEMS ]; |
---|
1009 | api->Notepads[ notepad ] = note; |
---|
1010 | return RTEMS_SUCCESSFUL; |
---|
1011 | } |
---|
1012 | |
---|
1013 | the_thread = _Thread_Get( id, &location ); |
---|
1014 | switch ( location ) { |
---|
1015 | |
---|
1016 | case OBJECTS_REMOTE: |
---|
1017 | #if defined(RTEMS_MULTIPROCESSING) |
---|
1018 | return _RTEMS_tasks_MP_Send_request_packet( |
---|
1019 | RTEMS_TASKS_MP_SET_NOTE_REQUEST, |
---|
1020 | id, |
---|
1021 | 0, /* Not used */ |
---|
1022 | notepad, |
---|
1023 | note |
---|
1024 | ); |
---|
1025 | #endif |
---|
1026 | |
---|
1027 | case OBJECTS_ERROR: |
---|
1028 | return RTEMS_INVALID_ID; |
---|
1029 | |
---|
1030 | case OBJECTS_LOCAL: |
---|
1031 | api = the_thread->API_Extensions[ THREAD_API_RTEMS ]; |
---|
1032 | api->Notepads[ notepad ] = note; |
---|
1033 | _Thread_Enable_dispatch(); |
---|
1034 | return RTEMS_SUCCESSFUL; |
---|
1035 | } |
---|
1036 | |
---|
1037 | return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ |
---|
1038 | } |
---|
1039 | |
---|
1040 | /*PAGE |
---|
1041 | * |
---|
1042 | * rtems_task_wake_after |
---|
1043 | * |
---|
1044 | * This directive suspends the requesting thread for the given amount |
---|
1045 | * of ticks. |
---|
1046 | * |
---|
1047 | * Input parameters: |
---|
1048 | * ticks - number of ticks to wait |
---|
1049 | * |
---|
1050 | * Output parameters: |
---|
1051 | * RTEMS_SUCCESSFUL - always successful |
---|
1052 | */ |
---|
1053 | |
---|
1054 | rtems_status_code rtems_task_wake_after( |
---|
1055 | rtems_interval ticks |
---|
1056 | ) |
---|
1057 | { |
---|
1058 | if ( ticks == 0 ) { |
---|
1059 | _Thread_Yield_processor(); |
---|
1060 | _Thread_Dispatch(); |
---|
1061 | } else { |
---|
1062 | _Thread_Disable_dispatch(); |
---|
1063 | _Thread_Set_state( _Thread_Executing, STATES_DELAYING ); |
---|
1064 | _Watchdog_Initialize( |
---|
1065 | &_Thread_Executing->Timer, |
---|
1066 | _Thread_Delay_ended, |
---|
1067 | _Thread_Executing->Object.id, |
---|
1068 | NULL |
---|
1069 | ); |
---|
1070 | _Watchdog_Insert_ticks( &_Thread_Executing->Timer, ticks ); |
---|
1071 | _Thread_Enable_dispatch(); |
---|
1072 | } |
---|
1073 | return RTEMS_SUCCESSFUL; |
---|
1074 | } |
---|
1075 | |
---|
1076 | /*PAGE |
---|
1077 | * |
---|
1078 | * rtems_task_wake_when |
---|
1079 | * |
---|
1080 | * This directive blocks the requesting thread until the given date and |
---|
1081 | * time is reached. |
---|
1082 | * |
---|
1083 | * Input parameters: |
---|
1084 | * time_buffer - pointer to the time and date structure |
---|
1085 | * |
---|
1086 | * Output parameters: |
---|
1087 | * RTEMS_SUCCESSFUL - if successful |
---|
1088 | * error code - if unsuccessful |
---|
1089 | */ |
---|
1090 | |
---|
1091 | rtems_status_code rtems_task_wake_when( |
---|
1092 | rtems_time_of_day *time_buffer |
---|
1093 | ) |
---|
1094 | { |
---|
1095 | Watchdog_Interval seconds; |
---|
1096 | |
---|
1097 | if ( !_TOD_Is_set ) |
---|
1098 | return RTEMS_NOT_DEFINED; |
---|
1099 | |
---|
1100 | time_buffer->ticks = 0; |
---|
1101 | |
---|
1102 | if ( !_TOD_Validate( time_buffer ) ) |
---|
1103 | return RTEMS_INVALID_CLOCK; |
---|
1104 | |
---|
1105 | seconds = _TOD_To_seconds( time_buffer ); |
---|
1106 | |
---|
1107 | if ( seconds <= _TOD_Seconds_since_epoch ) |
---|
1108 | return RTEMS_INVALID_CLOCK; |
---|
1109 | |
---|
1110 | _Thread_Disable_dispatch(); |
---|
1111 | _Thread_Set_state( _Thread_Executing, STATES_WAITING_FOR_TIME ); |
---|
1112 | _Watchdog_Initialize( |
---|
1113 | &_Thread_Executing->Timer, |
---|
1114 | _Thread_Delay_ended, |
---|
1115 | _Thread_Executing->Object.id, |
---|
1116 | NULL |
---|
1117 | ); |
---|
1118 | _Watchdog_Insert_seconds( |
---|
1119 | &_Thread_Executing->Timer, |
---|
1120 | seconds - _TOD_Seconds_since_epoch |
---|
1121 | ); |
---|
1122 | _Thread_Enable_dispatch(); |
---|
1123 | return RTEMS_SUCCESSFUL; |
---|
1124 | } |
---|
1125 | |
---|
1126 | /*PAGE |
---|
1127 | * |
---|
1128 | * _RTEMS_tasks_Initialize_user_tasks |
---|
1129 | * |
---|
1130 | * This routine creates and starts all configured user |
---|
1131 | * initialzation threads. |
---|
1132 | * |
---|
1133 | * Input parameters: NONE |
---|
1134 | * |
---|
1135 | * Output parameters: NONE |
---|
1136 | */ |
---|
1137 | |
---|
1138 | void _RTEMS_tasks_Initialize_user_tasks( void ) |
---|
1139 | { |
---|
1140 | unsigned32 index; |
---|
1141 | unsigned32 maximum; |
---|
1142 | rtems_id id; |
---|
1143 | rtems_status_code return_value; |
---|
1144 | rtems_initialization_tasks_table *user_tasks; |
---|
1145 | |
---|
1146 | /* |
---|
1147 | * NOTE: This is slightly different from the Ada implementation. |
---|
1148 | */ |
---|
1149 | |
---|
1150 | user_tasks = _RTEMS_tasks_User_initialization_tasks; |
---|
1151 | maximum = _RTEMS_tasks_Number_of_initialization_tasks; |
---|
1152 | |
---|
1153 | if ( !user_tasks || maximum == 0 ) |
---|
1154 | return; |
---|
1155 | |
---|
1156 | for ( index=0 ; index < maximum ; index++ ) { |
---|
1157 | return_value = rtems_task_create( |
---|
1158 | user_tasks[ index ].name, |
---|
1159 | user_tasks[ index ].initial_priority, |
---|
1160 | user_tasks[ index ].stack_size, |
---|
1161 | user_tasks[ index ].mode_set, |
---|
1162 | user_tasks[ index ].attribute_set, |
---|
1163 | &id |
---|
1164 | ); |
---|
1165 | |
---|
1166 | if ( !rtems_is_status_successful( return_value ) ) |
---|
1167 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, return_value ); |
---|
1168 | |
---|
1169 | return_value = rtems_task_start( |
---|
1170 | id, |
---|
1171 | user_tasks[ index ].entry_point, |
---|
1172 | user_tasks[ index ].argument |
---|
1173 | ); |
---|
1174 | |
---|
1175 | if ( !rtems_is_status_successful( return_value ) ) |
---|
1176 | _Internal_error_Occurred( INTERNAL_ERROR_RTEMS_API, TRUE, return_value ); |
---|
1177 | } |
---|
1178 | } |
---|
1179 | |
---|