source: rtems/cpukit/score/src/schedulerprioritychangepriority.c @ 647b95d

4.115
Last change on this file since 647b95d was 647b95d, checked in by Sebastian Huber <sebastian.huber@…>, on 06/10/14 at 14:32:12

score: Use chain nodes for ready queue support

This reduces the API to the minimum data structures to maximize the
re-usability.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/**
2 * @file
3 *
4 * @brief Removes Thread from Thread Queue
5 *
6 * @ingroup ScoreScheduler
7 */
8
9/*
10 *  COPYRIGHT (c) 2011.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#if HAVE_CONFIG_H
19#include "config.h"
20#endif
21
22#include <rtems/score/schedulerpriorityimpl.h>
23
24void _Scheduler_priority_Change_priority(
25  const Scheduler_Control *scheduler,
26  Thread_Control          *the_thread,
27  Priority_Control         new_priority,
28  bool                     prepend_it
29)
30{
31  Scheduler_priority_Context *context =
32    _Scheduler_priority_Get_context( scheduler );
33  Scheduler_priority_Node *node = _Scheduler_priority_Node_get( the_thread );
34
35  _Scheduler_priority_Ready_queue_extract(
36    &the_thread->Object.Node,
37    &node->Ready_queue,
38    &context->Bit_map
39  );
40
41  _Scheduler_priority_Ready_queue_update(
42    &node->Ready_queue,
43    new_priority,
44    &context->Bit_map,
45    &context->Ready[ 0 ]
46  );
47
48  if ( prepend_it ) {
49    _Scheduler_priority_Ready_queue_enqueue_first(
50      &the_thread->Object.Node,
51      &node->Ready_queue,
52      &context->Bit_map
53    );
54  } else {
55    _Scheduler_priority_Ready_queue_enqueue(
56      &the_thread->Object.Node,
57      &node->Ready_queue,
58      &context->Bit_map
59    );
60  }
61}
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