blob: c896fbb00f4bc7bad1f8b48a4d86601f43ac454c (
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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/**
* @file
*
* @brief Remove Watchdog from List
* @ingroup ScoreWatchdog
*/
/*
* COPYRIGHT (c) 1989-1999.
* 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.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/watchdogimpl.h>
#include <rtems/score/assert.h>
void _Watchdog_Remove_it(
Watchdog_Header *header,
Watchdog_Control *the_watchdog
)
{
Chain_Node *next;
Watchdog_Interval delta;
const Chain_Node *iterator_tail;
Chain_Node *iterator_node;
_Assert(
the_watchdog->state == WATCHDOG_ACTIVE
|| the_watchdog->state == WATCHDOG_REMOVE_IT
);
the_watchdog->state = WATCHDOG_INACTIVE;
the_watchdog->stop_time = _Watchdog_Ticks_since_boot;
next = _Chain_Next( &the_watchdog->Node );
delta = the_watchdog->delta_interval;
if ( next != _Chain_Tail( &header->Watchdogs ) ) {
Watchdog_Control *next_watchdog;
next_watchdog = (Watchdog_Control *) next;
next_watchdog->delta_interval += delta;
}
_Chain_Extract_unprotected( &the_watchdog->Node );
iterator_node = _Chain_First( &header->Iterators );
iterator_tail = _Chain_Immutable_tail( &header->Iterators );
while ( iterator_node != iterator_tail ) {
Watchdog_Iterator *iterator;
iterator = (Watchdog_Iterator *) iterator_node;
if ( iterator->current == next ) {
iterator->delta_interval += delta;
}
if ( iterator->current == &the_watchdog->Node ) {
iterator->current = _Chain_Previous( &the_watchdog->Node );
}
iterator_node = _Chain_Next( iterator_node );
}
}
Watchdog_States _Watchdog_Remove(
Watchdog_Header *header,
Watchdog_Control *the_watchdog
)
{
ISR_lock_Context lock_context;
Watchdog_States previous_state;
Watchdog_Interval now;
_Watchdog_Acquire( header, &lock_context );
previous_state = the_watchdog->state;
switch ( previous_state ) {
case WATCHDOG_INACTIVE:
break;
case WATCHDOG_BEING_INSERTED:
/*
* It is not actually on the chain so just change the state and
* the Insert operation we interrupted will be aborted.
*/
the_watchdog->state = WATCHDOG_INACTIVE;
now = _Watchdog_Ticks_since_boot;
the_watchdog->start_time = now;
the_watchdog->stop_time = now;
break;
case WATCHDOG_ACTIVE:
case WATCHDOG_REMOVE_IT:
_Watchdog_Remove_it( header, the_watchdog );
break;
}
_Watchdog_Release( header, &lock_context );
return( previous_state );
}
|
