4 * Babeltrace Connection
6 * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #include <babeltrace/graph/notification-iterator-internal.h>
30 #include <babeltrace/graph/component-internal.h>
31 #include <babeltrace/graph/component-source-internal.h>
32 #include <babeltrace/graph/component-filter-internal.h>
33 #include <babeltrace/graph/connection-internal.h>
34 #include <babeltrace/graph/private-connection.h>
35 #include <babeltrace/graph/graph-internal.h>
36 #include <babeltrace/graph/port-internal.h>
37 #include <babeltrace/object-internal.h>
38 #include <babeltrace/compiler-internal.h>
42 void bt_connection_destroy(struct bt_object
*obj
)
44 struct bt_connection
*connection
= container_of(obj
,
45 struct bt_connection
, base
);
48 * No bt_put on ports as a connection only holds _weak_ references
54 struct bt_connection
*bt_connection_from_private_connection(
55 struct bt_private_connection
*private_connection
)
57 return bt_get(bt_connection_from_private(private_connection
));
61 struct bt_connection
*bt_connection_create(
62 struct bt_graph
*graph
,
63 struct bt_port
*upstream_port
,
64 struct bt_port
*downstream_port
)
66 struct bt_connection
*connection
= NULL
;
68 if (bt_port_get_type(upstream_port
) != BT_PORT_TYPE_OUTPUT
) {
71 if (bt_port_get_type(downstream_port
) != BT_PORT_TYPE_INPUT
) {
75 connection
= g_new0(struct bt_connection
, 1);
80 bt_object_init(connection
, bt_connection_destroy
);
81 /* Weak references are taken, see comment in header. */
82 connection
->upstream_port
= upstream_port
;
83 connection
->downstream_port
= downstream_port
;
84 bt_port_set_connection(upstream_port
, connection
);
85 bt_port_set_connection(downstream_port
, connection
);
86 bt_object_set_parent(connection
, &graph
->base
);
92 void bt_connection_disconnect_ports(struct bt_connection
*conn
)
94 struct bt_component
*downstream_comp
= NULL
;
95 struct bt_component
*upstream_comp
= NULL
;
96 struct bt_port
*downstream_port
= conn
->downstream_port
;
97 struct bt_port
*upstream_port
= conn
->upstream_port
;
98 struct bt_graph
*graph
= (void *) bt_object_get_parent(conn
);
100 if (downstream_port
) {
101 downstream_comp
= bt_port_get_component(downstream_port
);
102 bt_port_set_connection(downstream_port
, NULL
);
103 conn
->downstream_port
= NULL
;
107 upstream_comp
= bt_port_get_component(upstream_port
);
108 bt_port_set_connection(upstream_port
, NULL
);
109 conn
->upstream_port
= NULL
;
112 if (downstream_comp
) {
113 bt_component_port_disconnected(downstream_comp
,
118 bt_component_port_disconnected(upstream_comp
, upstream_port
);
122 bt_graph_notify_ports_disconnected(graph
, upstream_comp
,
123 downstream_comp
, upstream_port
, downstream_port
);
124 bt_put(downstream_comp
);
125 bt_put(upstream_comp
);
129 struct bt_port
*bt_connection_get_upstream_port(
130 struct bt_connection
*connection
)
132 return connection
? bt_get(connection
->upstream_port
) : NULL
;
135 struct bt_port
*bt_connection_get_downstream_port(
136 struct bt_connection
*connection
)
138 return connection
? bt_get(connection
->downstream_port
) : NULL
;
141 struct bt_notification_iterator
*
142 bt_private_connection_create_notification_iterator(
143 struct bt_private_connection
*private_connection
)
145 enum bt_notification_iterator_status ret_iterator
;
146 enum bt_component_class_type upstream_comp_class_type
;
147 struct bt_notification_iterator
*iterator
= NULL
;
148 struct bt_port
*upstream_port
= NULL
;
149 struct bt_component
*upstream_component
= NULL
;
150 struct bt_component_class
*upstream_comp_class
= NULL
;
151 struct bt_connection
*connection
= NULL
;
152 bt_component_class_notification_iterator_init_method init_method
= NULL
;
154 if (!private_connection
) {
158 connection
= bt_connection_from_private(private_connection
);
160 if (!connection
->upstream_port
|| !connection
->downstream_port
) {
164 upstream_port
= connection
->upstream_port
;
165 assert(upstream_port
);
166 upstream_component
= bt_port_get_component(upstream_port
);
167 assert(upstream_component
);
168 upstream_comp_class
= upstream_component
->class;
170 if (!upstream_component
) {
174 upstream_comp_class_type
=
175 bt_component_get_class_type(upstream_component
);
176 if (upstream_comp_class_type
!= BT_COMPONENT_CLASS_TYPE_SOURCE
&&
177 upstream_comp_class_type
!= BT_COMPONENT_CLASS_TYPE_FILTER
) {
178 /* Unsupported operation. */
182 iterator
= bt_notification_iterator_create(upstream_component
,
188 switch (upstream_comp_class_type
) {
189 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
191 struct bt_component_class_source
*source_class
=
192 container_of(upstream_comp_class
,
193 struct bt_component_class_source
, parent
);
194 init_method
= source_class
->methods
.iterator
.init
;
197 case BT_COMPONENT_CLASS_TYPE_FILTER
:
199 struct bt_component_class_filter
*filter_class
=
200 container_of(upstream_comp_class
,
201 struct bt_component_class_filter
, parent
);
202 init_method
= filter_class
->methods
.iterator
.init
;
211 enum bt_notification_iterator_status status
= init_method(
212 bt_private_notification_iterator_from_notification_iterator(iterator
),
213 bt_private_port_from_port(upstream_port
));
219 ret_iterator
= bt_notification_iterator_validate(iterator
);
220 if (ret_iterator
!= BT_NOTIFICATION_ITERATOR_STATUS_OK
) {
230 bt_put(upstream_component
);