1 #ifndef BABELTRACE_GRAPH_GRAPH_H
2 #define BABELTRACE_GRAPH_GRAPH_H
5 * BabelTrace - Babeltrace Graph Interface
7 * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
9 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
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
30 #include <babeltrace/graph/component.h>
31 #include <babeltrace/types.h>
40 enum bt_graph_status
{
41 BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION
= 111,
43 BT_GRAPH_STATUS_CANCELED
= 125,
44 /** No sink can consume at the moment. */
45 BT_GRAPH_STATUS_AGAIN
= 11,
46 /** Downstream component does not support multiple inputs. */
47 BT_GRAPH_STATUS_END
= 1,
48 BT_GRAPH_STATUS_OK
= 0,
49 /** Invalid arguments. */
50 BT_GRAPH_STATUS_INVALID
= -22,
51 /** No sink in graph. */
52 BT_GRAPH_STATUS_NO_SINK
= -6,
54 BT_GRAPH_STATUS_ERROR
= -1,
55 BT_GRAPH_STATUS_CANNOT_CONSUME
= -2,
56 BT_GRAPH_STATUS_NOMEM
= -12,
59 typedef void (*bt_graph_port_added_listener
)(struct bt_port
*port
,
61 typedef void (*bt_graph_port_removed_listener
)(struct bt_component
*component
,
62 struct bt_port
*port
, void *data
);
63 typedef void (*bt_graph_ports_connected_listener
)(struct bt_port
*upstream_port
,
64 struct bt_port
*downstream_port
, void *data
);
65 typedef void (*bt_graph_ports_disconnected_listener
)(
66 struct bt_component
*upstream_component
,
67 struct bt_component
*downstream_component
,
68 struct bt_port
*upstream_port
, struct bt_port
*downstream_port
,
70 typedef void (* bt_graph_listener_removed
)(void *data
);
72 extern struct bt_graph
*bt_graph_create(void);
74 extern enum bt_graph_status
bt_graph_add_component(
75 struct bt_graph
*graph
,
76 struct bt_component_class
*component_class
,
77 const char *name
, struct bt_value
*params
,
78 struct bt_component
**component
);
80 extern enum bt_graph_status
bt_graph_add_component_with_init_method_data(
81 struct bt_graph
*graph
,
82 struct bt_component_class
*component_class
,
83 const char *name
, struct bt_value
*params
,
84 void *init_method_data
,
85 struct bt_component
**component
);
88 * Creates a connection between two components using the two ports specified
89 * and adds the connection and components (if not already added) to the graph.
91 extern enum bt_graph_status
bt_graph_connect_ports(struct bt_graph
*graph
,
92 struct bt_port
*upstream
, struct bt_port
*downstream
,
93 struct bt_connection
**connection
);
96 * Run graph to completion or until a single sink is left and "AGAIN" is received.
98 * Runs "bt_component_sink_consume()" on all sinks in round-robin until they all
99 * indicate that the end is reached or that an error occured.
101 extern enum bt_graph_status
bt_graph_run(struct bt_graph
*graph
);
104 * Runs "bt_component_sink_consume()" on the graph's sinks. Each invokation will
105 * invoke "bt_component_sink_consume()" on the next sink, in round-robin, until
106 * they all indicated that the end is reached.
108 extern enum bt_graph_status
bt_graph_consume(struct bt_graph
*graph
);
110 extern int bt_graph_add_port_added_listener(struct bt_graph
*graph
,
111 bt_graph_port_added_listener listener
,
112 bt_graph_listener_removed listener_removed
, void *data
);
114 extern int bt_graph_add_port_removed_listener(struct bt_graph
*graph
,
115 bt_graph_port_removed_listener listener
,
116 bt_graph_listener_removed listener_removed
, void *data
);
118 extern int bt_graph_add_ports_connected_listener(struct bt_graph
*graph
,
119 bt_graph_ports_connected_listener listener
,
120 bt_graph_listener_removed listener_removed
, void *data
);
122 extern int bt_graph_add_ports_disconnected_listener(struct bt_graph
*graph
,
123 bt_graph_ports_disconnected_listener listener
,
124 bt_graph_listener_removed listener_removed
, void *data
);
126 extern enum bt_graph_status
bt_graph_cancel(struct bt_graph
*graph
);
127 extern bt_bool
bt_graph_is_canceled(struct bt_graph
*graph
);
133 #endif /* BABELTRACE_GRAPH_GRAPH_H */