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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/**
* @file
*
* @ingroup RTEMSScoreUserExt
*
* @brief This source file contains the definition of ::_User_extensions_List
* and the implementation of _User_extensions_Fatal_visitor(),
* _User_extensions_Iterate(), _User_extensions_Thread_begin_visitor(),
* _User_extensions_Thread_create_visitor(),
* _User_extensions_Thread_delete_visitor(),
* _User_extensions_Thread_exitted_visitor(),
* _User_extensions_Thread_restart_visitor(),
* _User_extensions_Thread_start_visitor(), and
* _User_extensions_Thread_terminate_visitor().
*/
/*
* Copyright (c) 2012, 2019 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/userextimpl.h>
#include <pthread.h>
User_extensions_List _User_extensions_List = {
CHAIN_INITIALIZER_EMPTY( _User_extensions_List.Active ),
CHAIN_ITERATOR_REGISTRY_INITIALIZER( _User_extensions_List.Iterators )
#if defined(RTEMS_SMP)
,
ISR_LOCK_INITIALIZER( "User Extensions List" )
#endif
};
void _User_extensions_Thread_create_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_create_extension callout = callouts->thread_create;
if ( callout != NULL ) {
User_extensions_Thread_create_context *ctx = arg;
ctx->ok = ctx->ok && (*callout)( executing, ctx->created );
}
}
void _User_extensions_Thread_delete_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_delete_extension callout = callouts->thread_delete;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_start_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_start_extension callout = callouts->thread_start;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_restart_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_restart_extension callout = callouts->thread_restart;
if ( callout != NULL ) {
(*callout)( executing, arg );
}
}
void _User_extensions_Thread_begin_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_begin_extension callout = callouts->thread_begin;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Thread_exitted_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_exitted_extension callout = callouts->thread_exitted;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Fatal_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_fatal_extension callout = callouts->fatal;
if ( callout != NULL ) {
const User_extensions_Fatal_context *ctx = arg;
(*callout)( ctx->source, false, ctx->error );
}
}
void _User_extensions_Thread_terminate_visitor(
Thread_Control *executing,
void *arg,
const User_extensions_Table *callouts
)
{
User_extensions_thread_terminate_extension callout =
callouts->thread_terminate;
if ( callout != NULL ) {
(*callout)( executing );
}
}
void _User_extensions_Iterate(
void *arg,
User_extensions_Visitor visitor,
Chain_Iterator_direction direction
)
{
Thread_Control *executing;
const User_extensions_Table *initial_current;
const User_extensions_Table *initial_begin;
const User_extensions_Table *initial_end;
const Chain_Node *end;
Chain_Node *node;
User_extensions_Iterator iter;
ISR_lock_Context lock_context;
executing = _Thread_Get_executing();
initial_begin = _User_extensions_Initial_extensions;
initial_end = initial_begin + _User_extensions_Initial_count;
if ( direction == CHAIN_ITERATOR_FORWARD ) {
initial_current = initial_begin;
while ( initial_current != initial_end ) {
(*visitor)( executing, arg, initial_current );
++initial_current;
}
end = _Chain_Immutable_tail( &_User_extensions_List.Active );
} else {
end = _Chain_Immutable_head( &_User_extensions_List.Active );
}
_User_extensions_Acquire( &lock_context );
_Chain_Iterator_initialize(
&_User_extensions_List.Active,
&_User_extensions_List.Iterators,
&iter.Iterator,
direction
);
if ( executing != NULL ) {
iter.previous = executing->last_user_extensions_iterator;
executing->last_user_extensions_iterator = &iter;
}
while ( ( node = _Chain_Iterator_next( &iter.Iterator ) ) != end ) {
const User_extensions_Control *extension;
_Chain_Iterator_set_position( &iter.Iterator, node );
_User_extensions_Release( &lock_context );
extension = (const User_extensions_Control *) node;
( *visitor )( executing, arg, &extension->Callouts );
_User_extensions_Acquire( &lock_context );
}
if ( executing != NULL ) {
executing->last_user_extensions_iterator = iter.previous;
}
_Chain_Iterator_destroy( &iter.Iterator );
_User_extensions_Release( &lock_context );
if ( direction == CHAIN_ITERATOR_BACKWARD ) {
initial_current = initial_end;
while ( initial_current != initial_begin ) {
--initial_current;
(*visitor)( executing, arg, initial_current );
}
}
}
|
