Implement the component connection interface
[babeltrace.git] / include / babeltrace / component / component-connection-internal.h
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1#ifndef BABELTRACE_COMPONENT_CONNECTION_INTERNAL_H
2#define BABELTRACE_COMPONENT_CONNECTION_INTERNAL_H
3
4/*
5 * BabelTrace - Component Connection Internal
6 *
7 * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 *
9 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 * SOFTWARE.
28 */
29
30#include <babeltrace/component/component-connection.h>
31#include <babeltrace/object-internal.h>
32
33struct bt_graph;
34
35struct bt_connection {
36 /*
37 * The graph is a connection's parent and the connection is the parent
38 * of all iterators it has created.
39 */
40 struct bt_object base;
41 /*
42 * Weak references are held to both ports. Their existence is guaranteed
43 * by the existence of the graph and thus, of their respective
44 * components.
45 */
46 /* Downstream port. */
47 struct bt_port *input_port;
48 /* Upstream port. */
49 struct bt_port *output_port;
50};
51
52BT_HIDDEN
53struct bt_connection *bt_connection_create(struct bt_graph *graph,
54 struct bt_port *upstream, struct bt_port *downstream);
55
56#endif /* BABELTRACE_COMPONENT_CONNECTION_INTERNAL_H */
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