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 /* Protection: this file uses BT_LIB_LOG*() macros directly */
28 #ifndef BT_LIB_LOG_SUPPORTED
29 # error Please include "lib/logging.h" before including this file.
32 #include <babeltrace2/graph/graph.h>
33 #include <babeltrace2/graph/message-const.h>
34 #include "common/macros.h"
35 #include "lib/object.h"
36 #include "lib/object-pool.h"
37 #include "common/assert.h"
38 #include "common/common.h"
42 #include "component.h"
43 #include "component-sink.h"
44 #include "connection.h"
45 #include "lib/func-status.h"
47 /* Protection: this file uses BT_LIB_LOG*() macros directly */
48 #ifndef BT_LIB_LOG_SUPPORTED
49 # error Please include "lib/logging.h" before including this file.
52 /* Protection: this file uses BT_ASSERT_PRE*() macros directly */
53 #ifndef BT_ASSERT_PRE_SUPPORTED
54 # error Please include "lib/assert-pre.h" before including this file.
57 /* Protection: this file uses BT_ASSERT_POST*() macros directly */
58 #ifndef BT_ASSERT_POST_SUPPORTED
59 # error Please include "lib/assert-post.h" before including this file.
65 enum bt_graph_configuration_state
{
66 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
67 BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED
,
68 BT_GRAPH_CONFIGURATION_STATE_CONFIGURED
,
69 BT_GRAPH_CONFIGURATION_STATE_FAULTY
,
70 BT_GRAPH_CONFIGURATION_STATE_DESTROYING
,
75 * A component graph contains components and point-to-point connection
76 * between these components.
78 * In terms of ownership:
79 * 1) The graph is the components' parent,
80 * 2) The graph is the connnections' parent,
81 * 3) Components share the ownership of their connections,
82 * 4) A connection holds weak references to its two component endpoints.
84 struct bt_object base
;
86 /* Array of pointers to bt_connection. */
87 GPtrArray
*connections
;
88 /* Array of pointers to bt_component. */
89 GPtrArray
*components
;
90 /* Queue of pointers (weak references) to sink bt_components. */
91 GQueue
*sinks_to_consume
;
96 * Array of `struct bt_interrupter *`, each one owned by this.
97 * If any interrupter is set, then this graph is deemed
100 GPtrArray
*interrupters
;
103 * Default interrupter to support bt_graph_interrupt(); owned
106 struct bt_interrupter
*default_interrupter
;
108 bool in_remove_listener
;
112 * If this is false, then the public API's consuming
113 * functions (bt_graph_consume() and bt_graph_run()) return
114 * BT_FUNC_STATUS_CANNOT_CONSUME. The internal "no check"
115 * functions always work.
117 * In bt_port_output_message_iterator_create(), on success,
118 * this flag is cleared so that the iterator remains the only
119 * consumer for the graph's lifetime.
123 enum bt_graph_configuration_state config_state
;
126 GArray
*source_output_port_added
;
127 GArray
*filter_output_port_added
;
128 GArray
*filter_input_port_added
;
129 GArray
*sink_input_port_added
;
130 GArray
*source_filter_ports_connected
;
131 GArray
*source_sink_ports_connected
;
132 GArray
*filter_filter_ports_connected
;
133 GArray
*filter_sink_ports_connected
;
136 /* Pool of `struct bt_message_event *` */
137 struct bt_object_pool event_msg_pool
;
139 /* Pool of `struct bt_message_packet_beginning *` */
140 struct bt_object_pool packet_begin_msg_pool
;
142 /* Pool of `struct bt_message_packet_end *` */
143 struct bt_object_pool packet_end_msg_pool
;
146 * Array of `struct bt_message *` (weak).
148 * This is an array of all the messages ever created from
149 * this graph. Some of them can be in one of the pools above,
150 * some of them can be at large. Because each message has a
151 * weak pointer to the graph containing its pool, we need to
152 * notify each message that the graph is gone on graph
155 * TODO: When we support a maximum size for object pools,
156 * add a way for a message to remove itself from this
157 * array (on destruction).
163 void bt_graph_set_can_consume(struct bt_graph
*graph
, bool can_consume
)
166 graph
->can_consume
= can_consume
;
170 int bt_graph_consume_sink_no_check(struct bt_graph
*graph
,
171 struct bt_component_sink
*sink
);
174 enum bt_graph_listener_func_status
bt_graph_notify_port_added(struct bt_graph
*graph
,
175 struct bt_port
*port
);
178 enum bt_graph_listener_func_status
bt_graph_notify_ports_connected(
179 struct bt_graph
*graph
, struct bt_port
*upstream_port
,
180 struct bt_port
*downstream_port
);
183 void bt_graph_remove_connection(struct bt_graph
*graph
,
184 struct bt_connection
*connection
);
187 * This only works with a component which is not connected at this
190 * Also the reference count of `component` should be 0 when you call
191 * this function, which means only `graph` owns the component, so it
192 * is safe to destroy.
195 int bt_graph_remove_unconnected_component(struct bt_graph
*graph
,
196 struct bt_component
*component
);
199 void bt_graph_add_message(struct bt_graph
*graph
,
200 struct bt_message
*msg
);
203 bool bt_graph_is_interrupted(const struct bt_graph
*graph
);
206 const char *bt_graph_configuration_state_string(
207 enum bt_graph_configuration_state state
)
210 case BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
:
211 return "CONFIGURING";
212 case BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED
:
213 return "PARTIALLY_CONFIGURED";
214 case BT_GRAPH_CONFIGURATION_STATE_CONFIGURED
:
216 case BT_GRAPH_CONFIGURATION_STATE_FAULTY
:
218 case BT_GRAPH_CONFIGURATION_STATE_DESTROYING
:
226 int bt_graph_configure(struct bt_graph
*graph
)
228 int status
= BT_FUNC_STATUS_OK
;
231 BT_ASSERT(graph
->config_state
!= BT_GRAPH_CONFIGURATION_STATE_FAULTY
);
233 if (G_LIKELY(graph
->config_state
==
234 BT_GRAPH_CONFIGURATION_STATE_CONFIGURED
)) {
238 BT_ASSERT_PRE(graph
->has_sink
, "Graph has no sink component: %!+g", graph
);
239 graph
->config_state
= BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED
;
241 for (i
= 0; i
< graph
->components
->len
; i
++) {
242 struct bt_component
*comp
= graph
->components
->pdata
[i
];
243 struct bt_component_sink
*comp_sink
= (void *) comp
;
244 struct bt_component_class_sink
*comp_cls_sink
=
245 (void *) comp
->class;
247 if (comp
->class->type
!= BT_COMPONENT_CLASS_TYPE_SINK
) {
251 if (comp_sink
->graph_is_configured_method_called
) {
255 if (comp_cls_sink
->methods
.graph_is_configured
) {
256 enum bt_component_class_sink_graph_is_configured_method_status comp_status
;
258 BT_LIB_LOGD("Calling user's \"graph is configured\" method: "
259 "%![graph-]+g, %![comp-]+c",
261 comp_status
= comp_cls_sink
->methods
.graph_is_configured(
263 BT_LIB_LOGD("User method returned: status=%s",
264 bt_common_func_status_string(comp_status
));
265 BT_ASSERT_POST(comp_status
== BT_FUNC_STATUS_OK
||
266 comp_status
== BT_FUNC_STATUS_ERROR
||
267 comp_status
== BT_FUNC_STATUS_MEMORY_ERROR
,
268 "Unexpected returned status: status=%s",
269 bt_common_func_status_string(comp_status
));
270 if (comp_status
!= BT_FUNC_STATUS_OK
) {
271 if (comp_status
< 0) {
272 BT_LIB_LOGW_APPEND_CAUSE(
273 "Component's \"graph is configured\" method failed: "
274 "%![comp-]+c, status=%s",
276 bt_common_func_status_string(
280 status
= comp_status
;
285 comp_sink
->graph_is_configured_method_called
= true;
288 graph
->config_state
= BT_GRAPH_CONFIGURATION_STATE_CONFIGURED
;
295 void bt_graph_make_faulty(struct bt_graph
*graph
)
297 graph
->config_state
= BT_GRAPH_CONFIGURATION_STATE_FAULTY
;
298 BT_LIB_LOGI("Set graph's state to faulty: %![graph-]+g", graph
);
301 #endif /* BABELTRACE_GRAPH_GRAPH_INTERNAL_H */