source: rtems/cpukit/score/src/scheduleredfupdate.c @ 99fc1d1d

5
Last change on this file since 99fc1d1d was 99fc1d1d, checked in by Sebastian Huber <sebastian.huber@…>, on Jun 9, 2016 at 7:30:40 PM

score: Rework EDF scheduler

Use inline red-black tree insert. Do not use shifting priorities since
this is not supported by the thread queues. Due to the 32-bit
Priority_Control this currently limits the uptime to 49days with a 1ms
clock tick.

Update #2173.

  • Property mode set to 100644
File size: 843 bytes
Line 
1/**
2 *  @file
3 *
4 *  @brief Scheduler EDF Update
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/scheduleredfimpl.h>
22
23void _Scheduler_EDF_Update_priority(
24  const Scheduler_Control *scheduler,
25  Thread_Control          *the_thread,
26  Priority_Control         new_priority
27)
28{
29  Scheduler_EDF_Node *node;
30
31  node = _Scheduler_EDF_Thread_get_node( the_thread );
32
33  if ( ( new_priority & SCHEDULER_EDF_PRIO_MSB ) != 0 ) {
34    node->background_priority = new_priority;
35  }
36
37  node->current_priority = new_priority;
38}
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