blob: 31ed6401afd2d40fd9ef01f75cf7f8b91376a0fc (
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
48
49
50
51
52
|
/**
* @file
*
* @brief Scheduler EDF Unblock
* @ingroup ScoreScheduler
*/
/*
* Copyright (C) 2011 Petr Benes.
* 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/system.h>
#include <rtems/score/scheduler.h>
#include <rtems/score/scheduleredf.h>
void _Scheduler_EDF_Unblock(
Thread_Control *the_thread
)
{
_Scheduler_EDF_Enqueue(the_thread);
/* TODO: flash critical section? */
/*
* If the thread that was unblocked is more important than the heir,
* then we have a new heir. This may or may not result in a
* context switch.
*
* Normal case:
* If the current thread is preemptible, then we need to do
* a context switch.
* Pseudo-ISR case:
* Even if the thread isn't preemptible, if the new heir is
* a pseudo-ISR system task, we need to do a context switch.
*/
if ( _Scheduler_Is_priority_lower_than(
_Thread_Heir->current_priority,
the_thread->current_priority )) {
_Thread_Heir = the_thread;
if ( _Thread_Executing->is_preemptible ||
the_thread->current_priority == 0 )
_Thread_Dispatch_necessary = true;
}
}
|
