source: rtems/cpukit/score/src/schedulercbs.c @ 0a97ba5b

5
Last change on this file since 0a97ba5b was 900d337f, checked in by Sebastian Huber <sebastian.huber@…>, on 05/05/15 at 11:05:54

score: Rework _Thread_Change_priority()

Move the writes to Thread_Control::current_priority and
Thread_Control::real_priority into _Thread_Change_priority() under the
protection of the thread lock. Add a filter function to
_Thread_Change_priority() to enable specialized variants.

Avoid race conditions during a thread priority restore with the new
Thread_Control::priority_restore_hint for an important average case
optimizations used by priority inheritance mutexes.

Update #2273.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/**
2 * @file
3 *
4 * @brief CBS Scheduler Budget Handler
5 * @ingroup ScoreScheduler
6 */
7
8/*
9 *  Copyright (C) 2011 Petr Benes.
10 *  Copyright (C) 2011 On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/score/schedulercbsimpl.h>
22#include <rtems/score/threadimpl.h>
23#include <rtems/score/wkspace.h>
24
25void _Scheduler_CBS_Budget_callout(
26  Thread_Control *the_thread
27)
28{
29  Priority_Control          new_priority;
30  Priority_Control          unused;
31  Scheduler_CBS_Node       *node;
32  Scheduler_CBS_Server_id   server_id;
33
34  /* Put violating task to background until the end of period. */
35  new_priority = the_thread->Start.initial_priority;
36  _Thread_Set_priority( the_thread, new_priority, &unused, true );
37
38  /* Invoke callback function if any. */
39  node = _Scheduler_CBS_Thread_get_node( the_thread );
40  if ( node->cbs_server->cbs_budget_overrun ) {
41    _Scheduler_CBS_Get_server_id(
42        node->cbs_server->task_id,
43        &server_id
44    );
45    node->cbs_server->cbs_budget_overrun( server_id );
46  }
47}
48
49int _Scheduler_CBS_Initialize(void)
50{
51  return SCHEDULER_CBS_OK;
52}
Note: See TracBrowser for help on using the repository browser.