5
Last change
on this file since 0daa8ab was
300f6a48,
checked in by Sebastian Huber <sebastian.huber@…>, on 06/22/16 at 15:09:23
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score: Rework thread priority management
Add priority nodes which contribute to the overall thread priority.
The actual priority of a thread is now an aggregation of priority nodes.
The thread priority aggregation for the home scheduler instance of a
thread consists of at least one priority node, which is normally the
real priority of the thread. The locking protocols (e.g. priority
ceiling and priority inheritance), rate-monotonic period objects and the
POSIX sporadic server add, change and remove priority nodes.
A thread changes its priority now immediately, e.g. priority changes are
not deferred until the thread releases its last resource.
Replace the _Thread_Change_priority() function with
- _Thread_Priority_perform_actions(),
- _Thread_Priority_add(),
- _Thread_Priority_remove(),
- _Thread_Priority_change(), and
- _Thread_Priority_update().
Update #2412.
Update #2556.
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-
Property mode set to
100644
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File size:
1.3 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief CBS Scheduler Budget Handler |
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5 | * @ingroup ScoreScheduler |
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6 | */ |
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7 | |
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8 | /* |
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9 | * Copyright (C) 2011 Petr Benes. |
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10 | * Copyright (C) 2011 On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/score/schedulercbsimpl.h> |
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22 | |
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23 | void _Scheduler_CBS_Budget_callout( |
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24 | Thread_Control *the_thread |
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25 | ) |
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26 | { |
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27 | Scheduler_CBS_Node *node; |
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28 | Scheduler_CBS_Server_id server_id; |
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29 | Thread_queue_Context queue_context; |
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30 | |
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31 | node = _Scheduler_CBS_Thread_get_node( the_thread ); |
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32 | |
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33 | /* Put violating task to background until the end of period. */ |
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34 | _Thread_queue_Context_clear_priority_updates( &queue_context ); |
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35 | _Scheduler_CBS_Cancel_job( |
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36 | NULL, |
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37 | the_thread, |
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38 | node->deadline_node, |
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39 | &queue_context |
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40 | ); |
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41 | _Thread_Priority_update( &queue_context ); |
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42 | |
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43 | /* Invoke callback function if any. */ |
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44 | if ( node->cbs_server->cbs_budget_overrun ) { |
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45 | _Scheduler_CBS_Get_server_id( |
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46 | node->cbs_server->task_id, |
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47 | &server_id |
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48 | ); |
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49 | node->cbs_server->cbs_budget_overrun( server_id ); |
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50 | } |
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51 | } |
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52 | |
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53 | int _Scheduler_CBS_Initialize(void) |
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54 | { |
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55 | return SCHEDULER_CBS_OK; |
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56 | } |
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