1 #ifndef BABELTRACE_GRAPH_GRAPH_INTERNAL_H
2 #define BABELTRACE_GRAPH_GRAPH_INTERNAL_H
5 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
6 * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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
27 #include <babeltrace/graph/graph.h>
28 #include <babeltrace/graph/connection-internal.h>
29 #include <babeltrace/graph/message-const.h>
30 #include <babeltrace/babeltrace-internal.h>
31 #include <babeltrace/object-internal.h>
32 #include <babeltrace/object-pool-internal.h>
33 #include <babeltrace/assert-internal.h>
42 * A component graph contains components and point-to-point connection
43 * between these components.
45 * In terms of ownership:
46 * 1) The graph is the components' parent,
47 * 2) The graph is the connnections' parent,
48 * 3) Components share the ownership of their connections,
49 * 4) A connection holds weak references to its two component endpoints.
51 struct bt_object base
;
53 /* Array of pointers to bt_connection. */
54 GPtrArray
*connections
;
55 /* Array of pointers to bt_component. */
56 GPtrArray
*components
;
57 /* Queue of pointers (weak references) to sink bt_components. */
58 GQueue
*sinks_to_consume
;
61 bool in_remove_listener
;
65 * If this is false, then the public API's consuming
66 * functions (bt_graph_consume() and bt_graph_run()) return
67 * BT_GRAPH_STATUS_CANNOT_CONSUME. The internal "no check"
68 * functions always work.
70 * In bt_port_output_message_iterator_create(), on success,
71 * this flag is cleared so that the iterator remains the only
72 * consumer for the graph's lifetime.
77 GArray
*source_output_port_added
;
78 GArray
*filter_output_port_added
;
79 GArray
*filter_input_port_added
;
80 GArray
*sink_input_port_added
;
81 GArray
*source_output_port_removed
;
82 GArray
*filter_output_port_removed
;
83 GArray
*filter_input_port_removed
;
84 GArray
*sink_input_port_removed
;
85 GArray
*source_filter_ports_connected
;
86 GArray
*source_sink_ports_connected
;
87 GArray
*filter_sink_ports_connected
;
88 GArray
*source_filter_ports_disconnected
;
89 GArray
*source_sink_ports_disconnected
;
90 GArray
*filter_sink_ports_disconnected
;
93 /* Pool of `struct bt_message_event *` */
94 struct bt_object_pool event_msg_pool
;
96 /* Pool of `struct bt_message_packet_beginning *` */
97 struct bt_object_pool packet_begin_msg_pool
;
99 /* Pool of `struct bt_message_packet_end *` */
100 struct bt_object_pool packet_end_msg_pool
;
103 * Array of `struct bt_message *` (weak).
105 * This is an array of all the messages ever created from
106 * this graph. Some of them can be in one of the pools above,
107 * some of them can be at large. Because each message has a
108 * weak pointer to the graph containing its pool, we need to
109 * notify each message that the graph is gone on graph
112 * TODO: When we support a maximum size for object pools,
113 * add a way for a message to remove itself from this
114 * array (on destruction).
120 void _bt_graph_set_can_consume(struct bt_graph
*graph
, bool can_consume
)
123 graph
->can_consume
= can_consume
;
127 # define bt_graph_set_can_consume _bt_graph_set_can_consume
129 # define bt_graph_set_can_consume(_graph, _can_consume)
133 enum bt_graph_status
bt_graph_consume_sink_no_check(struct bt_graph
*graph
,
134 struct bt_component_sink
*sink
);
137 void bt_graph_notify_port_added(struct bt_graph
*graph
, struct bt_port
*port
);
140 void bt_graph_notify_port_removed(struct bt_graph
*graph
,
141 struct bt_component
*comp
, struct bt_port
*port
);
144 void bt_graph_notify_ports_connected(struct bt_graph
*graph
,
145 struct bt_port
*upstream_port
, struct bt_port
*downstream_port
);
148 void bt_graph_notify_ports_disconnected(struct bt_graph
*graph
,
149 struct bt_component
*upstream_comp
,
150 struct bt_component
*downstream_comp
,
151 struct bt_port
*upstream_port
,
152 struct bt_port
*downstream_port
);
155 void bt_graph_remove_connection(struct bt_graph
*graph
,
156 struct bt_connection
*connection
);
159 * This only works with a component which is not connected at this
162 * Also the reference count of `component` should be 0 when you call
163 * this function, which means only `graph` owns the component, so it
164 * is safe to destroy.
167 int bt_graph_remove_unconnected_component(struct bt_graph
*graph
,
168 struct bt_component
*component
);
171 void bt_graph_add_message(struct bt_graph
*graph
,
172 struct bt_message
*msg
);
175 const char *bt_graph_status_string(enum bt_graph_status status
)
178 case BT_GRAPH_STATUS_CANCELED
:
179 return "BT_GRAPH_STATUS_CANCELED";
180 case BT_GRAPH_STATUS_AGAIN
:
181 return "BT_GRAPH_STATUS_AGAIN";
182 case BT_GRAPH_STATUS_END
:
183 return "BT_GRAPH_STATUS_END";
184 case BT_GRAPH_STATUS_OK
:
185 return "BT_GRAPH_STATUS_OK";
186 case BT_GRAPH_STATUS_NO_SINK
:
187 return "BT_GRAPH_STATUS_NO_SINK";
188 case BT_GRAPH_STATUS_ERROR
:
189 return "BT_GRAPH_STATUS_ERROR";
190 case BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION
:
191 return "BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION";
192 case BT_GRAPH_STATUS_NOMEM
:
193 return "BT_GRAPH_STATUS_NOMEM";
199 #endif /* BABELTRACE_GRAPH_GRAPH_INTERNAL_H */