lib: fully configure graph (add components, connect ports), then run
[babeltrace.git] / include / babeltrace / graph / component-internal.h
1 #ifndef BABELTRACE_GRAPH_COMPONENT_INTERNAL_H
2 #define BABELTRACE_GRAPH_COMPONENT_INTERNAL_H
3
4 /*
5 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
6 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27 #include <babeltrace/babeltrace-internal.h>
28 #include <babeltrace/graph/component-const.h>
29 #include <babeltrace/graph/component-class-internal.h>
30 #include <babeltrace/graph/port-internal.h>
31 #include <babeltrace/object-internal.h>
32 #include <babeltrace/types.h>
33 #include <babeltrace/assert-internal.h>
34 #include <glib.h>
35 #include <stdio.h>
36
37 typedef void (*bt_component_destroy_listener_func)(
38 struct bt_component *class, void *data);
39
40 struct bt_component_destroy_listener {
41 bt_component_destroy_listener_func func;
42 void *data;
43 };
44
45 struct bt_graph;
46
47 struct bt_component {
48 struct bt_object base;
49 struct bt_component_class *class;
50 GString *name;
51
52 /*
53 * Internal destroy function specific to a source, filter, or
54 * sink component object.
55 */
56 void (*destroy)(struct bt_component *);
57
58 /* User-defined data */
59 void *user_data;
60
61 /* Input and output ports (weak references) */
62 GPtrArray *input_ports;
63 GPtrArray *output_ports;
64
65 /* Array of struct bt_component_destroy_listener */
66 GArray *destroy_listeners;
67
68 bool initialized;
69 };
70
71 static inline
72 struct bt_graph *bt_component_borrow_graph(struct bt_component *comp)
73 {
74 BT_ASSERT(comp);
75 return (void *) bt_object_borrow_parent(&comp->base);
76 }
77
78 BT_HIDDEN
79 int bt_component_create(struct bt_component_class *component_class,
80 const char *name, struct bt_component **component);
81
82 BT_HIDDEN
83 enum bt_self_component_status bt_component_accept_port_connection(
84 struct bt_component *component, struct bt_port *self_port,
85 struct bt_port *other_port);
86
87 BT_HIDDEN
88 enum bt_self_component_status bt_component_port_connected(
89 struct bt_component *comp,
90 struct bt_port *self_port, struct bt_port *other_port);
91
92 BT_HIDDEN
93 void bt_component_set_graph(struct bt_component *component,
94 struct bt_graph *graph);
95
96 BT_HIDDEN
97 uint64_t bt_component_get_input_port_count(const struct bt_component *comp);
98
99 BT_HIDDEN
100 uint64_t bt_component_get_output_port_count(const struct bt_component *comp);
101
102 BT_HIDDEN
103 struct bt_port_input *bt_component_borrow_input_port_by_index(
104 struct bt_component *comp, uint64_t index);
105
106 BT_HIDDEN
107 struct bt_port_output *bt_component_borrow_output_port_by_index(
108 struct bt_component *comp, uint64_t index);
109
110 BT_HIDDEN
111 struct bt_port_input *bt_component_borrow_input_port_by_name(
112 struct bt_component *comp, const char *name);
113
114 BT_HIDDEN
115 struct bt_port_output *bt_component_borrow_output_port_by_name(
116 struct bt_component *comp, const char *name);
117
118 BT_HIDDEN
119 struct bt_port_input *bt_component_add_input_port(
120 struct bt_component *component, const char *name,
121 void *user_data);
122
123 BT_HIDDEN
124 struct bt_port_output *bt_component_add_output_port(
125 struct bt_component *component, const char *name,
126 void *user_data);
127
128 BT_HIDDEN
129 void bt_component_remove_port(struct bt_component *component,
130 struct bt_port *port);
131
132 BT_HIDDEN
133 void bt_component_add_destroy_listener(struct bt_component *component,
134 bt_component_destroy_listener_func func, void *data);
135
136 BT_HIDDEN
137 void bt_component_remove_destroy_listener(struct bt_component *component,
138 bt_component_destroy_listener_func func, void *data);
139
140 static inline
141 const char *bt_self_component_status_string(
142 enum bt_self_component_status status)
143 {
144 switch (status) {
145 case BT_SELF_COMPONENT_STATUS_OK:
146 return "BT_SELF_COMPONENT_STATUS_OK";
147 case BT_SELF_COMPONENT_STATUS_END:
148 return "BT_SELF_COMPONENT_STATUS_END";
149 case BT_SELF_COMPONENT_STATUS_AGAIN:
150 return "BT_SELF_COMPONENT_STATUS_AGAIN";
151 case BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION:
152 return "BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION";
153 case BT_SELF_COMPONENT_STATUS_ERROR:
154 return "BT_SELF_COMPONENT_STATUS_ERROR";
155 case BT_SELF_COMPONENT_STATUS_NOMEM:
156 return "BT_SELF_COMPONENT_STATUS_NOMEM";
157 default:
158 return "(unknown)";
159 }
160 }
161
162 #endif /* BABELTRACE_GRAPH_COMPONENT_INTERNAL_H */
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