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
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* Copyright (c) 2018 embedded brains GmbH
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/schedulerimpl.h>
void _Thread_Do_unpin( Thread_Control *executing, Per_CPU_Control *cpu_self )
{
ISR_lock_Context state_lock_context;
ISR_lock_Context scheduler_lock_context;
Scheduler_Node *pinned_node;
const Scheduler_Control *pinned_scheduler;
Scheduler_Node *home_node;
const Scheduler_Control *home_scheduler;
const Scheduler_Control *scheduler;
_Thread_State_acquire( executing, &state_lock_context );
executing->Scheduler.pin_level = 0;
pinned_node = SCHEDULER_NODE_OF_THREAD_SCHEDULER_NODE(
_Chain_First( &executing->Scheduler.Scheduler_nodes )
);
pinned_scheduler = _Scheduler_Node_get_scheduler( pinned_node );
home_node = _Thread_Scheduler_get_home_node( executing );
home_scheduler = _Thread_Scheduler_get_home( executing );
scheduler = pinned_scheduler;
executing->Scheduler.pinned_scheduler = NULL;
_Scheduler_Acquire_critical( scheduler, &scheduler_lock_context );
if ( _Thread_Is_ready( executing ) ) {
( *scheduler->Operations.block )( scheduler, executing, pinned_node );
}
( *scheduler->Operations.unpin )(
scheduler,
executing,
pinned_node,
cpu_self
);
if ( home_node != pinned_node ) {
_Scheduler_Release_critical( scheduler, &scheduler_lock_context );
_Chain_Extract_unprotected( &home_node->Thread.Scheduler_node.Chain );
_Chain_Prepend_unprotected(
&executing->Scheduler.Scheduler_nodes,
&home_node->Thread.Scheduler_node.Chain
);
scheduler = home_scheduler;
_Scheduler_Acquire_critical( scheduler, &scheduler_lock_context );
}
if ( _Thread_Is_ready( executing ) ) {
( *scheduler->Operations.unblock )( scheduler, executing, home_node );
}
_Scheduler_Release_critical( scheduler, &scheduler_lock_context );
_Thread_State_release( executing, &state_lock_context );
}
|
