1 #ifndef BABELTRACE_COMPONENT_COMPONENT_CLASS_H
2 #define BABELTRACE_COMPONENT_COMPONENT_CLASS_H
5 * Babeltrace - Component Class Interface.
7 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 #include <babeltrace/graph/component.h>
35 struct bt_component_class
;
37 struct bt_private_component
;
38 struct bt_private_port
;
41 struct bt_private_notification_iterator
;
44 * Component class type.
46 enum bt_component_class_type
{
47 BT_COMPONENT_CLASS_TYPE_UNKNOWN
= -1,
49 /** A source component is a notification generator. */
50 BT_COMPONENT_CLASS_TYPE_SOURCE
= 0,
52 /** A sink component handles incoming notifications. */
53 BT_COMPONENT_CLASS_TYPE_SINK
= 1,
55 /** A filter component implements both Source and Sink interfaces. */
56 BT_COMPONENT_CLASS_TYPE_FILTER
= 2,
59 typedef enum bt_component_status (*bt_component_class_init_method
)(
60 struct bt_private_component
*private_component
,
61 struct bt_value
*params
, void *init_method_data
);
63 typedef void (*bt_component_class_finalize_method
)(
64 struct bt_private_component
*private_component
);
66 typedef enum bt_notification_iterator_status
67 (*bt_component_class_notification_iterator_init_method
)(
68 struct bt_private_notification_iterator
*private_notification_iterator
,
69 struct bt_private_port
*private_port
);
71 typedef void (*bt_component_class_notification_iterator_finalize_method
)(
72 struct bt_private_notification_iterator
*private_notification_iterator
);
74 typedef struct bt_notification_iterator_next_return (*bt_component_class_notification_iterator_next_method
)(
75 struct bt_private_notification_iterator
*private_notification_iterator
);
77 typedef enum bt_notification_iterator_status
78 (*bt_component_class_notification_iterator_seek_time_method
)(
79 struct bt_private_notification_iterator
*private_notification_iterator
,
82 typedef struct bt_value
*(*bt_component_class_query_method
)(
83 struct bt_component_class
*component_class
,
84 const char *object
, struct bt_value
*params
);
86 typedef enum bt_component_status (*bt_component_class_accept_port_connection_method
)(
87 struct bt_private_component
*private_component
,
88 struct bt_private_port
*self_private_port
,
89 struct bt_port
*other_port
);
91 typedef void (*bt_component_class_port_connected_method
)(
92 struct bt_private_component
*private_component
,
93 struct bt_private_port
*self_private_port
,
94 struct bt_port
*other_port
);
96 typedef void (*bt_component_class_port_disconnected_method
)(
97 struct bt_private_component
*private_component
,
98 struct bt_private_port
*private_port
);
100 extern int bt_component_class_set_init_method(
101 struct bt_component_class
*component_class
,
102 bt_component_class_init_method init_method
);
104 extern int bt_component_class_set_finalize_method(
105 struct bt_component_class
*component_class
,
106 bt_component_class_finalize_method finalize_method
);
108 extern int bt_component_class_set_accept_port_connection_method(
109 struct bt_component_class
*component_class
,
110 bt_component_class_accept_port_connection_method accept_port_connection_method
);
112 extern int bt_component_class_set_port_connected_method(
113 struct bt_component_class
*component_class
,
114 bt_component_class_port_connected_method port_connected_method
);
116 extern int bt_component_class_set_port_disconnected_method(
117 struct bt_component_class
*component_class
,
118 bt_component_class_port_disconnected_method port_disconnected_method
);
120 extern int bt_component_class_set_query_method(
121 struct bt_component_class
*component_class
,
122 bt_component_class_query_method query_method
);
124 extern int bt_component_class_set_description(
125 struct bt_component_class
*component_class
,
126 const char *description
);
128 extern int bt_component_class_set_help(
129 struct bt_component_class
*component_class
,
132 extern int bt_component_class_freeze(
133 struct bt_component_class
*component_class
);
136 * Get a component class' name.
138 * @param component_class Component class of which to get the name
139 * @returns Name of the component class
141 extern const char *bt_component_class_get_name(
142 struct bt_component_class
*component_class
);
145 * Get a component class' description.
147 * Component classes may provide an optional description. It may, however,
150 * @param component_class Component class of which to get the description
151 * @returns Description of the component class, or NULL.
153 extern const char *bt_component_class_get_description(
154 struct bt_component_class
*component_class
);
156 extern const char *bt_component_class_get_help(
157 struct bt_component_class
*component_class
);
159 extern struct bt_value
*bt_component_class_query(
160 struct bt_component_class
*component_class
,
161 const char *object
, struct bt_value
*params
);
164 * Get a component class' type.
166 * @param component_class Component class of which to get the type
167 * @returns One of #bt_component_type
169 extern enum bt_component_class_type
bt_component_class_get_type(
170 struct bt_component_class
*component_class
);
176 #endif /* BABELTRACE_COMPONENT_COMPONENT_CLASS_H */