blob: e65bdb8af6da55bec69925a1d693b220b1725ef0 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/**
* @file
*
* @brief Scheduler Priority Yield
* @ingroup ScoreScheduler
*/
/*
* Copyright (C) 2010 Gedare Bloom.
* Copyright (C) 2011 On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/schedulerpriorityimpl.h>
#include <rtems/score/isr.h>
void _Scheduler_priority_Yield( Thread_Control *thread )
{
Scheduler_priority_Per_thread *sched_info;
ISR_Level level;
Chain_Control *ready;
sched_info = (Scheduler_priority_Per_thread *) thread->scheduler_info;
ready = sched_info->ready_chain;
_ISR_Disable( level );
if ( !_Chain_Has_only_one_node( ready ) ) {
_Chain_Extract_unprotected( &thread->Object.Node );
_Chain_Append_unprotected( ready, &thread->Object.Node );
_ISR_Flash( level );
if ( _Thread_Is_heir( thread ) )
_Thread_Heir = (Thread_Control *) _Chain_First( ready );
_Thread_Dispatch_necessary = true;
}
else if ( !_Thread_Is_heir( thread ) )
_Thread_Dispatch_necessary = true;
_ISR_Enable( level );
}
|
