blob: 9bc1635b3d9b80bc1ecf4a8f2e63cf0fede52e40 (
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
53
54
55
56
57
58
59
|
/**
* @file
*
* @brief Scheduler Simple Handler / Unblock
* @ingroup RTEMSScoreScheduler
*/
/*
* COPYRIGHT (c) 2011.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/schedulersimpleimpl.h>
#include <rtems/score/thread.h>
void _Scheduler_simple_Unblock(
const Scheduler_Control *scheduler,
Thread_Control *the_thread,
Scheduler_Node *node
)
{
Scheduler_simple_Context *context;
unsigned int priority;
unsigned int insert_priority;
(void) node;
context = _Scheduler_simple_Get_context( scheduler );
priority = _Thread_Get_priority( the_thread );
insert_priority = SCHEDULER_PRIORITY_APPEND( priority );
_Scheduler_simple_Insert( &context->Ready, the_thread, insert_priority );
/*
* 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 ( priority < _Thread_Get_priority( _Thread_Heir ) ) {
_Scheduler_Update_heir(
the_thread,
priority == PRIORITY_PSEUDO_ISR
);
}
}
|
