blob: ac5155c8192571a570716196a2b0da9d5785bc08 (
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
60
61
62
|
/**
* @file
*
* @ingroup RTEMSScoreObject
*
* @brief This source file contains the implementation of
* _Objects_Get().
*/
/*
* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/objectimpl.h>
Objects_Control *_Objects_Get(
Objects_Id id,
ISR_lock_Context *lock_context,
const Objects_Information *information
)
{
Objects_Id delta;
Objects_Id maximum_id;
Objects_Id end;
maximum_id = information->maximum_id;
delta = maximum_id - id;
end = _Objects_Get_index( maximum_id );
if ( RTEMS_PREDICT_TRUE( delta < end ) ) {
ISR_Level level;
Objects_Control *the_object;
_ISR_Local_disable( level );
_ISR_lock_Context_set_level( lock_context, level );
the_object =
information->local_table[ end - OBJECTS_INDEX_MINIMUM - delta ];
if ( RTEMS_PREDICT_TRUE( the_object != NULL ) ) {
/* ISR disabled on behalf of caller */
return the_object;
}
_ISR_Local_enable( level );
}
return NULL;
}
|