source: rtems/cpukit/score/src/scheduleredfyield.c @ 8568341

4.11
Last change on this file since 8568341 was 8568341, checked in by Sebastian Huber <sebastian.huber@…>, on Jun 11, 2014 at 12:31:03 PM

score: Need for help indicator for scheduler ops

Return a thread in need for help for the following scheduler operations

  • unblock,
  • change priority, and
  • yield.

A thread in need for help is a thread that encounters a scheduler state
change from scheduled to ready or a thread that cannot be scheduled in
an unblock operation. Such a thread can ask threads which depend on
resources owned by this thread for help.

  • Property mode set to 100644
File size: 1.0 KB
Line 
1/**
2 * @file
3 *
4 * @brief Scheduler EDF Yield
5 *
6 * @ingroup ScoreScheduler
7 */
8
9/*
10 *  Copyright (C) 2011 Petr Benes.
11 *  Copyright (C) 2011 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/scheduleredfimpl.h>
23
24Scheduler_Void_or_thread _Scheduler_EDF_Yield(
25  const Scheduler_Control *scheduler,
26  Thread_Control          *the_thread
27)
28{
29  Scheduler_EDF_Context *context =
30    _Scheduler_EDF_Get_context( scheduler );
31  Scheduler_EDF_Node    *node = _Scheduler_EDF_Thread_get_node( the_thread );
32
33  /*
34   * The RBTree has more than one node, enqueue behind the tasks
35   * with the same priority in case there are such ones.
36   */
37  _RBTree_Extract( &context->Ready, &node->Node );
38  _RBTree_Insert( &context->Ready, &node->Node );
39
40  _Scheduler_EDF_Schedule_body( scheduler, the_thread, false );
41
42  SCHEDULER_RETURN_VOID_OR_NULL;
43}
Note: See TracBrowser for help on using the repository browser.