source: rtems/cpukit/score/src/schedulerprioritychangepriority.c @ 254dc82

5
Last change on this file since 254dc82 was 254dc82, checked in by Sebastian Huber <sebastian.huber@…>, on 06/24/16 at 09:22:03

score: Change Priority_Control to 64-bit

A 32-bit Priority_Control limits the uptime to 49 days with a 1ms clock
tick in case the EDF scheduler is used. Increase it to 64-bit to enable
proper operation of the EDF scheduler,

Close 2173.

  • Property mode set to 100644
File size: 1.8 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
24Scheduler_Void_or_thread _Scheduler_priority_Update_priority(
25  const Scheduler_Control *scheduler,
26  Thread_Control          *the_thread
27)
28{
29  Scheduler_priority_Context *context;
30  Scheduler_priority_Node    *node;
31  unsigned int                priority;
32  bool                        prepend_it;
33
34  if ( !_Thread_Is_ready( the_thread ) ) {
35    /* Nothing to do */
36    SCHEDULER_RETURN_VOID_OR_NULL;
37  }
38
39  node = _Scheduler_priority_Thread_get_node( the_thread );
40  priority = (unsigned int )
41    _Scheduler_Node_get_priority( &node->Base, &prepend_it );
42
43  if ( priority == node->Ready_queue.current_priority ) {
44    /* Nothing to do */
45    SCHEDULER_RETURN_VOID_OR_NULL;
46  }
47
48  context = _Scheduler_priority_Get_context( scheduler );
49
50  _Scheduler_priority_Ready_queue_extract(
51    &the_thread->Object.Node,
52    &node->Ready_queue,
53    &context->Bit_map
54  );
55
56  _Scheduler_priority_Ready_queue_update(
57    &node->Ready_queue,
58    priority,
59    &context->Bit_map,
60    &context->Ready[ 0 ]
61  );
62
63  if ( prepend_it ) {
64    _Scheduler_priority_Ready_queue_enqueue_first(
65      &the_thread->Object.Node,
66      &node->Ready_queue,
67      &context->Bit_map
68    );
69  } else {
70    _Scheduler_priority_Ready_queue_enqueue(
71      &the_thread->Object.Node,
72      &node->Ready_queue,
73      &context->Bit_map
74    );
75  }
76
77  _Scheduler_priority_Schedule_body( scheduler, the_thread, false );
78
79  SCHEDULER_RETURN_VOID_OR_NULL;
80}
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