Commit | Line | Data |
---|---|---|
c0418dd9 | 1 | /* |
f60c8b34 | 2 | * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
262e5473 | 3 | * Copyright 2017 Philippe Proulx <pproulx@efficios.com> |
c0418dd9 JG |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
262e5473 PP |
24 | #define BT_LOG_TAG "GRAPH" |
25 | #include <babeltrace/lib-logging-internal.h> | |
26 | ||
b2e0c907 | 27 | #include <babeltrace/graph/component-internal.h> |
7b53201c PP |
28 | #include <babeltrace/graph/graph.h> |
29 | #include <babeltrace/graph/graph-const.h> | |
b2e0c907 PP |
30 | #include <babeltrace/graph/graph-internal.h> |
31 | #include <babeltrace/graph/connection-internal.h> | |
32 | #include <babeltrace/graph/component-sink-internal.h> | |
7b53201c PP |
33 | #include <babeltrace/graph/component-source-const.h> |
34 | #include <babeltrace/graph/component-filter-const.h> | |
35 | #include <babeltrace/graph/port-const.h> | |
f7c3ac09 PP |
36 | #include <babeltrace/graph/notification-internal.h> |
37 | #include <babeltrace/graph/notification-event-internal.h> | |
38 | #include <babeltrace/graph/notification-packet-internal.h> | |
3d9990ac | 39 | #include <babeltrace/compiler-internal.h> |
17582c6d | 40 | #include <babeltrace/common-internal.h> |
c55a9f58 | 41 | #include <babeltrace/types.h> |
0f15f666 PP |
42 | #include <babeltrace/value.h> |
43 | #include <babeltrace/value-const.h> | |
44 | #include <babeltrace/value-internal.h> | |
834e9996 | 45 | #include <babeltrace/object.h> |
8b45963b PP |
46 | #include <babeltrace/assert-internal.h> |
47 | #include <babeltrace/assert-pre-internal.h> | |
f60c8b34 | 48 | #include <unistd.h> |
1bf957a0 PP |
49 | #include <glib.h> |
50 | ||
7b53201c PP |
51 | typedef void (*port_added_func_t)(const void *, const void *, void *); |
52 | ||
53 | typedef void (*port_removed_func_t)(const void *, const void *, void *); | |
54 | ||
55 | typedef void (*ports_connected_func_t)(const void *, const void *, const void *, | |
56 | const void *, void *); | |
57 | ||
58 | typedef void (*ports_disconnected_func_t)(const void *, const void *, | |
59 | const void *, const void *, void *); | |
60 | ||
61 | typedef enum bt_self_component_status (*comp_init_method_t)(const void *, | |
62 | const void *, void *); | |
834e9996 | 63 | |
1bf957a0 | 64 | struct bt_graph_listener { |
7b53201c | 65 | bt_graph_listener_removed_func removed; |
1bf957a0 PP |
66 | void *data; |
67 | }; | |
c0418dd9 | 68 | |
834e9996 PP |
69 | struct bt_graph_listener_port_added { |
70 | struct bt_graph_listener base; | |
71 | port_added_func_t func; | |
72 | }; | |
eb87cce7 | 73 | |
834e9996 PP |
74 | struct bt_graph_listener_port_removed { |
75 | struct bt_graph_listener base; | |
76 | port_removed_func_t func; | |
77 | }; | |
eb87cce7 | 78 | |
834e9996 PP |
79 | struct bt_graph_listener_ports_connected { |
80 | struct bt_graph_listener base; | |
81 | ports_connected_func_t func; | |
82 | }; | |
eb87cce7 | 83 | |
834e9996 PP |
84 | struct bt_graph_listener_ports_disconnected { |
85 | struct bt_graph_listener base; | |
86 | ports_disconnected_func_t func; | |
87 | }; | |
eb87cce7 | 88 | |
834e9996 PP |
89 | #define INIT_LISTENERS_ARRAY(_type, _listeners) \ |
90 | do { \ | |
91 | _listeners = g_array_new(FALSE, TRUE, sizeof(_type)); \ | |
92 | if (!(_listeners)) { \ | |
93 | BT_LOGE_STR("Failed to allocate one GArray."); \ | |
94 | } \ | |
95 | } while (0) | |
96 | ||
97 | #define CALL_REMOVE_LISTENERS(_type, _listeners) \ | |
98 | do { \ | |
99 | size_t i; \ | |
100 | \ | |
101 | for (i = 0; i < (_listeners)->len; i++) { \ | |
102 | _type *listener = \ | |
103 | &g_array_index((_listeners), _type, i); \ | |
104 | \ | |
105 | if (listener->base.removed) { \ | |
106 | listener->base.removed(listener->base.data); \ | |
107 | } \ | |
108 | } \ | |
109 | } while (0) | |
eb87cce7 | 110 | |
f60c8b34 | 111 | static |
834e9996 | 112 | void destroy_graph(struct bt_object *obj) |
c0418dd9 | 113 | { |
7b53201c | 114 | struct bt_graph *graph = container_of(obj, struct bt_graph, base); |
c0418dd9 | 115 | |
bd14d768 PP |
116 | /* |
117 | * The graph's reference count is 0 if we're here. Increment | |
118 | * it to avoid a double-destroy (possibly infinitely recursive) | |
119 | * in this situation: | |
120 | * | |
121 | * 1. We put and destroy a connection. | |
122 | * 2. This connection's destructor finalizes its active | |
123 | * notification iterators. | |
124 | * 3. A notification iterator's finalization function gets a | |
125 | * new reference on its component (reference count goes from | |
126 | * 0 to 1). | |
127 | * 4. Since this component's reference count goes to 1, it takes | |
128 | * a reference on its parent (this graph). This graph's | |
129 | * reference count goes from 0 to 1. | |
130 | * 5. The notification iterator's finalization function puts its | |
131 | * component reference (reference count goes from 1 to 0). | |
132 | * 6. Since this component's reference count goes from 1 to 0, | |
133 | * it puts its parent (this graph). This graph's reference | |
134 | * count goes from 1 to 0. | |
135 | * 7. Since this graph's reference count goes from 1 to 0, | |
136 | * its destructor is called (this function). | |
137 | * | |
138 | * With the incrementation below, the graph's reference count at | |
139 | * step 4 goes from 1 to 2, and from 2 to 1 at step 6. This | |
140 | * ensures that this function is not called two times. | |
141 | */ | |
834e9996 | 142 | BT_LIB_LOGD("Destroying graph: %!+g", graph); |
1d7bf349 | 143 | obj->ref_count++; |
bd14d768 | 144 | |
49682acd PP |
145 | /* |
146 | * Cancel the graph to disallow some operations, like creating | |
147 | * notification iterators and adding ports to components. | |
148 | */ | |
7b53201c | 149 | (void) bt_graph_cancel((void *) graph); |
49682acd | 150 | |
eb87cce7 | 151 | /* Call all remove listeners */ |
834e9996 PP |
152 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, |
153 | graph->listeners.source_output_port_added); | |
154 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, | |
155 | graph->listeners.filter_output_port_added); | |
156 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, | |
157 | graph->listeners.filter_input_port_added); | |
158 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, | |
159 | graph->listeners.sink_input_port_added); | |
160 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed, | |
161 | graph->listeners.source_output_port_removed); | |
162 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed, | |
163 | graph->listeners.filter_output_port_removed); | |
164 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed, | |
165 | graph->listeners.filter_input_port_removed); | |
166 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_removed, | |
167 | graph->listeners.sink_input_port_removed); | |
168 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, | |
169 | graph->listeners.source_filter_ports_connected); | |
170 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, | |
171 | graph->listeners.source_sink_ports_connected); | |
172 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, | |
173 | graph->listeners.filter_sink_ports_connected); | |
174 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected, | |
175 | graph->listeners.source_filter_ports_disconnected); | |
176 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected, | |
177 | graph->listeners.source_sink_ports_disconnected); | |
178 | CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_disconnected, | |
179 | graph->listeners.filter_sink_ports_disconnected); | |
eb87cce7 | 180 | |
f7c3ac09 PP |
181 | if (graph->notifications) { |
182 | g_ptr_array_free(graph->notifications, TRUE); | |
834e9996 | 183 | graph->notifications = NULL; |
f7c3ac09 PP |
184 | } |
185 | ||
c0418dd9 | 186 | if (graph->connections) { |
262e5473 | 187 | BT_LOGD_STR("Destroying connections."); |
c0418dd9 | 188 | g_ptr_array_free(graph->connections, TRUE); |
834e9996 | 189 | graph->connections = NULL; |
c0418dd9 | 190 | } |
f7c3ac09 | 191 | |
bd14d768 | 192 | if (graph->components) { |
262e5473 | 193 | BT_LOGD_STR("Destroying components."); |
bd14d768 | 194 | g_ptr_array_free(graph->components, TRUE); |
834e9996 | 195 | graph->components = NULL; |
bd14d768 | 196 | } |
f7c3ac09 | 197 | |
f60c8b34 JG |
198 | if (graph->sinks_to_consume) { |
199 | g_queue_free(graph->sinks_to_consume); | |
834e9996 PP |
200 | graph->sinks_to_consume = NULL; |
201 | } | |
202 | ||
203 | if (graph->listeners.source_output_port_added) { | |
204 | g_array_free(graph->listeners.source_output_port_added, TRUE); | |
205 | graph->listeners.source_output_port_added = NULL; | |
206 | } | |
207 | ||
208 | if (graph->listeners.filter_output_port_added) { | |
209 | g_array_free(graph->listeners.filter_output_port_added, TRUE); | |
210 | graph->listeners.filter_output_port_added = NULL; | |
211 | } | |
212 | ||
213 | if (graph->listeners.filter_input_port_added) { | |
214 | g_array_free(graph->listeners.filter_input_port_added, TRUE); | |
215 | graph->listeners.filter_input_port_added = NULL; | |
c0418dd9 | 216 | } |
1bf957a0 | 217 | |
834e9996 PP |
218 | if (graph->listeners.sink_input_port_added) { |
219 | g_array_free(graph->listeners.sink_input_port_added, TRUE); | |
220 | graph->listeners.sink_input_port_added = NULL; | |
1bf957a0 PP |
221 | } |
222 | ||
834e9996 PP |
223 | if (graph->listeners.source_output_port_removed) { |
224 | g_array_free(graph->listeners.source_output_port_removed, TRUE); | |
225 | graph->listeners.source_output_port_removed = NULL; | |
1bf957a0 PP |
226 | } |
227 | ||
834e9996 PP |
228 | if (graph->listeners.filter_output_port_removed) { |
229 | g_array_free(graph->listeners.filter_output_port_removed, TRUE); | |
230 | graph->listeners.filter_output_port_removed = NULL; | |
1bf957a0 PP |
231 | } |
232 | ||
834e9996 PP |
233 | if (graph->listeners.filter_input_port_removed) { |
234 | g_array_free(graph->listeners.filter_input_port_removed, TRUE); | |
235 | graph->listeners.filter_input_port_removed = NULL; | |
236 | } | |
237 | ||
238 | if (graph->listeners.sink_input_port_removed) { | |
239 | g_array_free(graph->listeners.sink_input_port_removed, TRUE); | |
240 | graph->listeners.sink_input_port_removed = NULL; | |
241 | } | |
242 | ||
243 | if (graph->listeners.source_filter_ports_connected) { | |
244 | g_array_free(graph->listeners.source_filter_ports_connected, | |
245 | TRUE); | |
246 | graph->listeners.source_filter_ports_connected = NULL; | |
247 | } | |
248 | ||
249 | if (graph->listeners.source_sink_ports_connected) { | |
250 | g_array_free(graph->listeners.source_sink_ports_connected, | |
251 | TRUE); | |
252 | graph->listeners.source_sink_ports_connected = NULL; | |
253 | } | |
254 | ||
255 | if (graph->listeners.filter_sink_ports_connected) { | |
256 | g_array_free(graph->listeners.filter_sink_ports_connected, | |
257 | TRUE); | |
258 | graph->listeners.filter_sink_ports_connected = NULL; | |
259 | } | |
260 | ||
261 | if (graph->listeners.source_filter_ports_disconnected) { | |
262 | g_array_free(graph->listeners.source_filter_ports_disconnected, | |
263 | TRUE); | |
264 | graph->listeners.source_filter_ports_disconnected = NULL; | |
265 | } | |
266 | ||
267 | if (graph->listeners.source_sink_ports_disconnected) { | |
268 | g_array_free(graph->listeners.source_sink_ports_disconnected, | |
269 | TRUE); | |
270 | graph->listeners.source_sink_ports_disconnected = NULL; | |
271 | } | |
272 | ||
273 | if (graph->listeners.filter_sink_ports_disconnected) { | |
274 | g_array_free(graph->listeners.filter_sink_ports_disconnected, | |
275 | TRUE); | |
276 | graph->listeners.filter_sink_ports_disconnected = NULL; | |
1bf957a0 PP |
277 | } |
278 | ||
f7c3ac09 PP |
279 | bt_object_pool_finalize(&graph->event_notif_pool); |
280 | bt_object_pool_finalize(&graph->packet_begin_notif_pool); | |
281 | bt_object_pool_finalize(&graph->packet_end_notif_pool); | |
c0418dd9 JG |
282 | g_free(graph); |
283 | } | |
284 | ||
f7c3ac09 PP |
285 | static |
286 | void destroy_notification_event(struct bt_notification *notif, | |
287 | struct bt_graph *graph) | |
288 | { | |
289 | bt_notification_event_destroy(notif); | |
290 | } | |
291 | ||
292 | static | |
293 | void destroy_notification_packet_begin(struct bt_notification *notif, | |
294 | struct bt_graph *graph) | |
295 | { | |
e18f019b | 296 | bt_notification_packet_beginning_destroy(notif); |
f7c3ac09 PP |
297 | } |
298 | ||
299 | static | |
300 | void destroy_notification_packet_end(struct bt_notification *notif, | |
301 | struct bt_graph *graph) | |
302 | { | |
303 | bt_notification_packet_end_destroy(notif); | |
304 | } | |
305 | ||
306 | static | |
307 | void notify_notification_graph_is_destroyed(struct bt_notification *notif) | |
308 | { | |
309 | bt_notification_unlink_graph(notif); | |
310 | } | |
311 | ||
7b53201c | 312 | struct bt_graph *bt_graph_create(void) |
c0418dd9 | 313 | { |
f60c8b34 | 314 | struct bt_graph *graph; |
1bf957a0 | 315 | int ret; |
c0418dd9 | 316 | |
262e5473 | 317 | BT_LOGD_STR("Creating graph object."); |
f60c8b34 | 318 | graph = g_new0(struct bt_graph, 1); |
c0418dd9 | 319 | if (!graph) { |
262e5473 | 320 | BT_LOGE_STR("Failed to allocate one graph."); |
c0418dd9 JG |
321 | goto end; |
322 | } | |
323 | ||
834e9996 | 324 | bt_object_init_shared(&graph->base, destroy_graph); |
1d7bf349 PP |
325 | graph->connections = g_ptr_array_new_with_free_func( |
326 | (GDestroyNotify) bt_object_try_spec_release); | |
c0418dd9 | 327 | if (!graph->connections) { |
262e5473 | 328 | BT_LOGE_STR("Failed to allocate one GPtrArray."); |
c0418dd9 JG |
329 | goto error; |
330 | } | |
1d7bf349 PP |
331 | graph->components = g_ptr_array_new_with_free_func( |
332 | (GDestroyNotify) bt_object_try_spec_release); | |
f60c8b34 | 333 | if (!graph->components) { |
262e5473 | 334 | BT_LOGE_STR("Failed to allocate one GPtrArray."); |
f60c8b34 JG |
335 | goto error; |
336 | } | |
337 | graph->sinks_to_consume = g_queue_new(); | |
338 | if (!graph->sinks_to_consume) { | |
262e5473 | 339 | BT_LOGE_STR("Failed to allocate one GQueue."); |
c0418dd9 JG |
340 | goto error; |
341 | } | |
1bf957a0 | 342 | |
834e9996 PP |
343 | bt_graph_set_can_consume(graph, true); |
344 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, | |
345 | graph->listeners.source_output_port_added); | |
346 | ||
347 | if (!graph->listeners.source_output_port_added) { | |
348 | ret = -1; | |
1bf957a0 PP |
349 | goto error; |
350 | } | |
351 | ||
834e9996 PP |
352 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, |
353 | graph->listeners.filter_output_port_added); | |
354 | ||
355 | if (!graph->listeners.filter_output_port_added) { | |
356 | ret = -1; | |
1bf957a0 PP |
357 | goto error; |
358 | } | |
359 | ||
834e9996 PP |
360 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, |
361 | graph->listeners.filter_input_port_added); | |
362 | ||
363 | if (!graph->listeners.filter_input_port_added) { | |
364 | ret = -1; | |
1bf957a0 PP |
365 | goto error; |
366 | } | |
367 | ||
834e9996 PP |
368 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, |
369 | graph->listeners.sink_input_port_added); | |
370 | ||
371 | if (!graph->listeners.sink_input_port_added) { | |
372 | ret = -1; | |
373 | goto error; | |
374 | } | |
375 | ||
376 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed, | |
377 | graph->listeners.source_output_port_removed); | |
378 | ||
379 | if (!graph->listeners.source_output_port_removed) { | |
380 | ret = -1; | |
381 | goto error; | |
382 | } | |
383 | ||
384 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed, | |
385 | graph->listeners.filter_output_port_removed); | |
386 | ||
387 | if (!graph->listeners.filter_output_port_removed) { | |
388 | ret = -1; | |
389 | goto error; | |
390 | } | |
391 | ||
392 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed, | |
393 | graph->listeners.filter_input_port_removed); | |
394 | ||
395 | if (!graph->listeners.filter_input_port_removed) { | |
396 | ret = -1; | |
397 | goto error; | |
398 | } | |
399 | ||
400 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_removed, | |
401 | graph->listeners.sink_input_port_removed); | |
402 | ||
403 | if (!graph->listeners.sink_input_port_removed) { | |
404 | ret = -1; | |
405 | goto error; | |
406 | } | |
407 | ||
408 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, | |
409 | graph->listeners.source_filter_ports_connected); | |
410 | ||
411 | if (!graph->listeners.source_filter_ports_connected) { | |
412 | ret = -1; | |
413 | goto error; | |
414 | } | |
415 | ||
416 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, | |
417 | graph->listeners.source_sink_ports_connected); | |
418 | ||
419 | if (!graph->listeners.source_sink_ports_connected) { | |
420 | ret = -1; | |
421 | goto error; | |
422 | } | |
423 | ||
424 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, | |
425 | graph->listeners.filter_sink_ports_connected); | |
426 | ||
427 | if (!graph->listeners.filter_sink_ports_connected) { | |
428 | ret = -1; | |
429 | goto error; | |
430 | } | |
431 | ||
432 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected, | |
433 | graph->listeners.source_filter_ports_disconnected); | |
434 | ||
435 | if (!graph->listeners.source_filter_ports_disconnected) { | |
436 | ret = -1; | |
437 | goto error; | |
438 | } | |
439 | ||
440 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected, | |
441 | graph->listeners.source_sink_ports_disconnected); | |
442 | ||
443 | if (!graph->listeners.source_sink_ports_disconnected) { | |
444 | ret = -1; | |
445 | goto error; | |
446 | } | |
447 | ||
448 | INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_disconnected, | |
449 | graph->listeners.filter_sink_ports_disconnected); | |
450 | ||
451 | if (!graph->listeners.filter_sink_ports_disconnected) { | |
452 | ret = -1; | |
1bf957a0 PP |
453 | goto error; |
454 | } | |
455 | ||
f7c3ac09 PP |
456 | ret = bt_object_pool_initialize(&graph->event_notif_pool, |
457 | (bt_object_pool_new_object_func) bt_notification_event_new, | |
458 | (bt_object_pool_destroy_object_func) destroy_notification_event, | |
459 | graph); | |
460 | if (ret) { | |
461 | BT_LOGE("Failed to initialize event notification pool: ret=%d", | |
462 | ret); | |
463 | goto error; | |
464 | } | |
465 | ||
466 | ret = bt_object_pool_initialize(&graph->packet_begin_notif_pool, | |
e18f019b | 467 | (bt_object_pool_new_object_func) bt_notification_packet_beginning_new, |
f7c3ac09 PP |
468 | (bt_object_pool_destroy_object_func) destroy_notification_packet_begin, |
469 | graph); | |
470 | if (ret) { | |
471 | BT_LOGE("Failed to initialize packet beginning notification pool: ret=%d", | |
472 | ret); | |
473 | goto error; | |
474 | } | |
475 | ||
476 | ret = bt_object_pool_initialize(&graph->packet_end_notif_pool, | |
477 | (bt_object_pool_new_object_func) bt_notification_packet_end_new, | |
478 | (bt_object_pool_destroy_object_func) destroy_notification_packet_end, | |
479 | graph); | |
480 | if (ret) { | |
481 | BT_LOGE("Failed to initialize packet end notification pool: ret=%d", | |
482 | ret); | |
483 | goto error; | |
484 | } | |
485 | ||
486 | graph->notifications = g_ptr_array_new_with_free_func( | |
487 | (GDestroyNotify) notify_notification_graph_is_destroyed); | |
834e9996 | 488 | BT_LIB_LOGD("Created graph object: %!+g", graph); |
262e5473 | 489 | |
c0418dd9 | 490 | end: |
8d750b42 | 491 | return (void *) graph; |
834e9996 | 492 | |
c0418dd9 | 493 | error: |
8138bfe1 | 494 | BT_OBJECT_PUT_REF_AND_RESET(graph); |
c0418dd9 JG |
495 | goto end; |
496 | } | |
497 | ||
7b53201c PP |
498 | enum bt_graph_status bt_graph_connect_ports( |
499 | struct bt_graph *graph, | |
500 | const struct bt_port_output *upstream_port_out, | |
501 | const struct bt_port_input *downstream_port_in, | |
502 | const struct bt_connection **user_connection) | |
f60c8b34 | 503 | { |
a256a42d | 504 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; |
f60c8b34 | 505 | struct bt_connection *connection = NULL; |
834e9996 PP |
506 | struct bt_port *upstream_port = (void *) upstream_port_out; |
507 | struct bt_port *downstream_port = (void *) downstream_port_in; | |
f60c8b34 JG |
508 | struct bt_component *upstream_component = NULL; |
509 | struct bt_component *downstream_component = NULL; | |
834e9996 PP |
510 | enum bt_self_component_status component_status; |
511 | bool init_can_consume; | |
f60c8b34 | 512 | |
834e9996 PP |
513 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
514 | BT_ASSERT_PRE_NON_NULL(upstream_port, "Upstream port"); | |
515 | BT_ASSERT_PRE_NON_NULL(downstream_port, "Downstream port port"); | |
516 | BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); | |
517 | BT_ASSERT_PRE(!bt_port_is_connected(upstream_port), | |
518 | "Upstream port is already connected: %!+p", upstream_port); | |
519 | BT_ASSERT_PRE(!bt_port_is_connected(downstream_port), | |
520 | "Downstream port is already connected: %!+p", downstream_port); | |
7b53201c | 521 | BT_ASSERT_PRE(bt_port_borrow_component_inline((void *) upstream_port), |
834e9996 PP |
522 | "Upstream port does not belong to a component: %!+p", |
523 | upstream_port); | |
7b53201c | 524 | BT_ASSERT_PRE(bt_port_borrow_component_inline((void *) downstream_port), |
834e9996 PP |
525 | "Downstream port does not belong to a component: %!+p", |
526 | downstream_port); | |
3afb93ee | 527 | init_can_consume = graph->can_consume; |
834e9996 PP |
528 | BT_LIB_LOGD("Connecting component ports within graph: " |
529 | "%![graph-]+g, %![up-port-]+p, %![down-port-]+p", | |
530 | graph, upstream_port, downstream_port); | |
531 | bt_graph_set_can_consume(graph, false); | |
7b53201c | 532 | upstream_component = bt_port_borrow_component_inline( |
834e9996 | 533 | (void *) upstream_port); |
7b53201c | 534 | downstream_component = bt_port_borrow_component_inline( |
834e9996 | 535 | (void *) downstream_port); |
262e5473 | 536 | |
0d8b4d8e PP |
537 | /* |
538 | * At this point the ports are not connected yet. Both | |
539 | * components need to accept an eventual connection to their | |
540 | * port by the other port before we continue. | |
541 | */ | |
834e9996 PP |
542 | BT_LIB_LOGD("Asking upstream component to accept the connection: " |
543 | "%![comp-]+c", upstream_component); | |
0d8b4d8e | 544 | component_status = bt_component_accept_port_connection( |
834e9996 PP |
545 | upstream_component, (void *) upstream_port, |
546 | (void *) downstream_port); | |
547 | if (component_status != BT_SELF_COMPONENT_STATUS_OK) { | |
548 | if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { | |
262e5473 PP |
549 | BT_LOGD_STR("Upstream component refused the connection."); |
550 | } else { | |
551 | BT_LOGW("Cannot ask upstream component to accept the connection: " | |
834e9996 | 552 | "status=%s", bt_self_component_status_string(component_status)); |
262e5473 PP |
553 | } |
554 | ||
834e9996 | 555 | status = (int) component_status; |
a256a42d | 556 | goto end; |
0d8b4d8e | 557 | } |
262e5473 | 558 | |
834e9996 PP |
559 | BT_LIB_LOGD("Asking downstream component to accept the connection: " |
560 | "%![comp-]+c", downstream_component); | |
0d8b4d8e | 561 | component_status = bt_component_accept_port_connection( |
834e9996 PP |
562 | downstream_component, (void *) downstream_port, |
563 | (void *) upstream_port); | |
564 | if (component_status != BT_SELF_COMPONENT_STATUS_OK) { | |
565 | if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { | |
262e5473 PP |
566 | BT_LOGD_STR("Downstream component refused the connection."); |
567 | } else { | |
568 | BT_LOGW("Cannot ask downstream component to accept the connection: " | |
834e9996 | 569 | "status=%s", bt_self_component_status_string(component_status)); |
262e5473 PP |
570 | } |
571 | ||
834e9996 | 572 | status = (int) component_status; |
a256a42d | 573 | goto end; |
0d8b4d8e PP |
574 | } |
575 | ||
262e5473 | 576 | BT_LOGD_STR("Creating connection."); |
834e9996 PP |
577 | connection = bt_connection_create(graph, (void *) upstream_port, |
578 | (void *) downstream_port); | |
f60c8b34 | 579 | if (!connection) { |
262e5473 | 580 | BT_LOGW("Cannot create connection object."); |
a256a42d PP |
581 | status = BT_GRAPH_STATUS_NOMEM; |
582 | goto end; | |
f60c8b34 JG |
583 | } |
584 | ||
834e9996 | 585 | BT_LIB_LOGD("Connection object created: %!+x", connection); |
262e5473 | 586 | |
f60c8b34 | 587 | /* |
72b913fb PP |
588 | * Ownership of upstream_component/downstream_component and of |
589 | * the connection object is transferred to the graph. | |
f60c8b34 JG |
590 | */ |
591 | g_ptr_array_add(graph->connections, connection); | |
ffeb0eed | 592 | |
f60c8b34 | 593 | /* |
0d8b4d8e | 594 | * Notify both components that their port is connected. |
f60c8b34 | 595 | */ |
834e9996 PP |
596 | BT_LIB_LOGD("Notifying upstream component that its port is connected: " |
597 | "%![comp-]+c, %![port-]+p", upstream_component, upstream_port); | |
634f394c | 598 | component_status = bt_component_port_connected(upstream_component, |
834e9996 PP |
599 | (void *) upstream_port, (void *) downstream_port); |
600 | if (component_status != BT_SELF_COMPONENT_STATUS_OK) { | |
601 | BT_LIB_LOGW("Error while notifying upstream component that its port is connected: " | |
602 | "status=%s, %![graph-]+g, %![up-comp-]+c, " | |
603 | "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p", | |
604 | bt_self_component_status_string(component_status), | |
605 | graph, upstream_component, downstream_component, | |
606 | upstream_port, downstream_port); | |
634f394c | 607 | bt_connection_end(connection, true); |
834e9996 | 608 | status = (int) component_status; |
634f394c PP |
609 | goto end; |
610 | } | |
611 | ||
612 | connection->notified_upstream_port_connected = true; | |
834e9996 PP |
613 | BT_LIB_LOGD("Notifying downstream component that its port is connected: " |
614 | "%![comp-]+c, %![port-]+p", downstream_component, | |
615 | downstream_port); | |
634f394c | 616 | component_status = bt_component_port_connected(downstream_component, |
834e9996 PP |
617 | (void *) downstream_port, (void *) upstream_port); |
618 | if (component_status != BT_SELF_COMPONENT_STATUS_OK) { | |
619 | BT_LIB_LOGW("Error while notifying downstream component that its port is connected: " | |
620 | "status=%s, %![graph-]+g, %![up-comp-]+c, " | |
621 | "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p", | |
622 | bt_self_component_status_string(component_status), | |
623 | graph, upstream_component, downstream_component, | |
624 | upstream_port, downstream_port); | |
634f394c | 625 | bt_connection_end(connection, true); |
834e9996 | 626 | status = (int) component_status; |
634f394c PP |
627 | goto end; |
628 | } | |
629 | ||
630 | connection->notified_downstream_port_connected = true; | |
1bf957a0 PP |
631 | |
632 | /* | |
0d8b4d8e | 633 | * Notify the graph's creator that both ports are connected. |
1bf957a0 | 634 | */ |
262e5473 | 635 | BT_LOGD_STR("Notifying graph's user that new component ports are connected."); |
f345f8bb | 636 | bt_graph_notify_ports_connected(graph, upstream_port, downstream_port); |
634f394c | 637 | connection->notified_graph_ports_connected = true; |
834e9996 PP |
638 | BT_LIB_LOGD("Connected component ports within graph: " |
639 | "%![graph-]+g, %![up-comp-]+c, %![down-comp-]+c, " | |
640 | "%![up-port-]+p, %![down-port-]+p", | |
641 | graph, upstream_component, downstream_component, | |
642 | upstream_port, downstream_port); | |
1bf957a0 | 643 | |
a256a42d | 644 | if (user_connection) { |
1a6a376a PP |
645 | /* Move reference to user */ |
646 | *user_connection = connection; | |
647 | connection = NULL; | |
a256a42d PP |
648 | } |
649 | ||
f60c8b34 | 650 | end: |
8138bfe1 | 651 | bt_object_put_ref(connection); |
834e9996 PP |
652 | (void) init_can_consume; |
653 | bt_graph_set_can_consume(graph, init_can_consume); | |
a256a42d | 654 | return status; |
f60c8b34 JG |
655 | } |
656 | ||
371361a1 | 657 | static inline |
834e9996 | 658 | enum bt_graph_status consume_graph_sink(struct bt_component_sink *comp) |
c0418dd9 | 659 | { |
834e9996 PP |
660 | enum bt_self_component_status comp_status; |
661 | struct bt_component_class_sink *sink_class = NULL; | |
662 | ||
663 | BT_ASSERT(comp); | |
664 | sink_class = (void *) comp->parent.class; | |
665 | BT_ASSERT(sink_class->methods.consume); | |
666 | BT_LIB_LOGD("Calling user's consume method: %!+c", comp); | |
667 | comp_status = sink_class->methods.consume((void *) comp); | |
668 | BT_LOGD("User method returned: status=%s", | |
669 | bt_self_component_status_string(comp_status)); | |
670 | BT_ASSERT_PRE(comp_status == BT_SELF_COMPONENT_STATUS_OK || | |
671 | comp_status == BT_SELF_COMPONENT_STATUS_END || | |
672 | comp_status == BT_SELF_COMPONENT_STATUS_AGAIN || | |
673 | comp_status == BT_SELF_COMPONENT_STATUS_ERROR || | |
674 | comp_status == BT_SELF_COMPONENT_STATUS_NOMEM, | |
675 | "Invalid component status returned by consuming method: " | |
676 | "status=%s", bt_self_component_status_string(comp_status)); | |
677 | if (comp_status < 0) { | |
678 | BT_LOGW_STR("Consume method failed."); | |
679 | goto end; | |
680 | } | |
681 | ||
682 | BT_LIB_LOGV("Consumed from sink: %![comp-]+c, status=%s", | |
683 | comp, bt_self_component_status_string(comp_status)); | |
684 | ||
685 | end: | |
686 | return (int) comp_status; | |
c3ac0193 PP |
687 | } |
688 | ||
689 | /* | |
690 | * `node` is removed from the queue of sinks to consume when passed to | |
691 | * this function. This function adds it back to the queue if there's | |
692 | * still something to consume afterwards. | |
693 | */ | |
371361a1 | 694 | static inline |
834e9996 | 695 | enum bt_graph_status consume_sink_node(struct bt_graph *graph, GList *node) |
c3ac0193 PP |
696 | { |
697 | enum bt_graph_status status; | |
834e9996 | 698 | struct bt_component_sink *sink; |
c3ac0193 PP |
699 | |
700 | sink = node->data; | |
701 | status = consume_graph_sink(sink); | |
371361a1 | 702 | if (unlikely(status != BT_GRAPH_STATUS_END)) { |
c3ac0193 | 703 | g_queue_push_tail_link(graph->sinks_to_consume, node); |
f60c8b34 JG |
704 | goto end; |
705 | } | |
706 | ||
707 | /* End reached, the node is not added back to the queue and free'd. */ | |
c3ac0193 | 708 | g_queue_delete_link(graph->sinks_to_consume, node); |
f60c8b34 JG |
709 | |
710 | /* Don't forward an END status if there are sinks left to consume. */ | |
711 | if (!g_queue_is_empty(graph->sinks_to_consume)) { | |
712 | status = BT_GRAPH_STATUS_OK; | |
713 | goto end; | |
714 | } | |
c3ac0193 PP |
715 | |
716 | end: | |
834e9996 PP |
717 | BT_LIB_LOGV("Consumed sink node: %![comp-]+c, status=%s", |
718 | sink, bt_graph_status_string(status)); | |
c3ac0193 PP |
719 | return status; |
720 | } | |
721 | ||
722 | BT_HIDDEN | |
723 | enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph, | |
834e9996 | 724 | struct bt_component_sink *sink) |
c3ac0193 PP |
725 | { |
726 | enum bt_graph_status status; | |
727 | GList *sink_node; | |
728 | int index; | |
729 | ||
834e9996 PP |
730 | BT_LIB_LOGV("Making specific sink consume: %![comp-]+c", sink); |
731 | BT_ASSERT(bt_component_borrow_graph((void *) sink) == graph); | |
c3ac0193 PP |
732 | |
733 | if (g_queue_is_empty(graph->sinks_to_consume)) { | |
734 | BT_LOGV_STR("Graph's sink queue is empty: end of graph."); | |
735 | status = BT_GRAPH_STATUS_END; | |
736 | goto end; | |
737 | } | |
738 | ||
739 | index = g_queue_index(graph->sinks_to_consume, sink); | |
740 | if (index < 0) { | |
741 | BT_LOGV_STR("Sink is not marked as consumable: sink is ended."); | |
742 | status = BT_GRAPH_STATUS_END; | |
743 | goto end; | |
744 | } | |
745 | ||
746 | sink_node = g_queue_pop_nth_link(graph->sinks_to_consume, index); | |
8b45963b | 747 | BT_ASSERT(sink_node); |
c3ac0193 PP |
748 | status = consume_sink_node(graph, sink_node); |
749 | ||
750 | end: | |
751 | return status; | |
752 | } | |
753 | ||
371361a1 | 754 | static inline |
834e9996 | 755 | enum bt_graph_status consume_no_check(struct bt_graph *graph) |
c3ac0193 PP |
756 | { |
757 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; | |
758 | struct bt_component *sink; | |
759 | GList *current_node; | |
760 | ||
8b45963b PP |
761 | BT_ASSERT_PRE(graph->has_sink, |
762 | "Graph has no sink component: %!+g", graph); | |
834e9996 | 763 | BT_LIB_LOGV("Making next sink consume: %![graph-]+g", graph); |
c3ac0193 | 764 | |
371361a1 | 765 | if (unlikely(g_queue_is_empty(graph->sinks_to_consume))) { |
c3ac0193 PP |
766 | BT_LOGV_STR("Graph's sink queue is empty: end of graph."); |
767 | status = BT_GRAPH_STATUS_END; | |
768 | goto end; | |
769 | } | |
770 | ||
771 | current_node = g_queue_pop_head_link(graph->sinks_to_consume); | |
772 | sink = current_node->data; | |
834e9996 | 773 | BT_LIB_LOGV("Chose next sink to consume: %!+c", sink); |
c3ac0193 PP |
774 | status = consume_sink_node(graph, current_node); |
775 | ||
f60c8b34 JG |
776 | end: |
777 | return status; | |
c0418dd9 JG |
778 | } |
779 | ||
7b53201c PP |
780 | enum bt_graph_status bt_graph_consume( |
781 | struct bt_graph *graph) | |
851b70bd | 782 | { |
8b45963b | 783 | enum bt_graph_status status; |
9ef22b36 | 784 | |
8b45963b PP |
785 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
786 | BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); | |
787 | BT_ASSERT_PRE(graph->can_consume, | |
788 | "Cannot consume graph in its current state: %!+g", graph); | |
371361a1 | 789 | bt_graph_set_can_consume(graph, BT_FALSE); |
834e9996 | 790 | status = consume_no_check(graph); |
371361a1 | 791 | bt_graph_set_can_consume(graph, BT_TRUE); |
f8cd6131 | 792 | return status; |
851b70bd PP |
793 | } |
794 | ||
7b53201c | 795 | enum bt_graph_status bt_graph_run(struct bt_graph *graph) |
f60c8b34 | 796 | { |
72b913fb | 797 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; |
f60c8b34 | 798 | |
834e9996 PP |
799 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
800 | BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); | |
371361a1 PP |
801 | BT_ASSERT_PRE(graph->can_consume, |
802 | "Cannot consume graph in its current state: %!+g", graph); | |
803 | bt_graph_set_can_consume(graph, BT_FALSE); | |
834e9996 | 804 | BT_LIB_LOGV("Running graph: %!+g", graph); |
262e5473 | 805 | |
f60c8b34 | 806 | do { |
851b70bd PP |
807 | /* |
808 | * Check if the graph is canceled at each iteration. If | |
809 | * the graph was canceled by another thread or by a | |
834e9996 PP |
810 | * signal handler, this is not a warning nor an error, |
811 | * it was intentional: log with a DEBUG level only. | |
851b70bd | 812 | */ |
371361a1 | 813 | if (unlikely(graph->canceled)) { |
834e9996 PP |
814 | BT_LIB_LOGD("Stopping the graph: graph is canceled: " |
815 | "%!+g", graph); | |
851b70bd PP |
816 | status = BT_GRAPH_STATUS_CANCELED; |
817 | goto end; | |
818 | } | |
819 | ||
834e9996 | 820 | status = consume_no_check(graph); |
371361a1 | 821 | if (unlikely(status == BT_GRAPH_STATUS_AGAIN)) { |
f60c8b34 | 822 | /* |
202a3a13 PP |
823 | * If AGAIN is received and there are multiple |
824 | * sinks, go ahead and consume from the next | |
825 | * sink. | |
f60c8b34 | 826 | * |
202a3a13 PP |
827 | * However, in the case where a single sink is |
828 | * left, the caller can decide to busy-wait and | |
7b53201c | 829 | * call bt_graph_run() continuously |
834e9996 PP |
830 | * until the source is ready or it can decide to |
831 | * sleep for an arbitrary amount of time. | |
f60c8b34 JG |
832 | */ |
833 | if (graph->sinks_to_consume->length > 1) { | |
72b913fb | 834 | status = BT_GRAPH_STATUS_OK; |
f60c8b34 | 835 | } |
aebb2750 PP |
836 | } else if (status == BT_GRAPH_STATUS_NO_SINK) { |
837 | goto end; | |
f60c8b34 | 838 | } |
72b913fb | 839 | } while (status == BT_GRAPH_STATUS_OK); |
f60c8b34 JG |
840 | |
841 | if (g_queue_is_empty(graph->sinks_to_consume)) { | |
72b913fb | 842 | status = BT_GRAPH_STATUS_END; |
f60c8b34 | 843 | } |
262e5473 | 844 | |
202a3a13 | 845 | end: |
834e9996 PP |
846 | BT_LIB_LOGV("Graph ran: %![graph-]+g, status=%s", graph, |
847 | bt_graph_status_string(status)); | |
848 | bt_graph_set_can_consume(graph, BT_TRUE); | |
72b913fb | 849 | return status; |
f60c8b34 | 850 | } |
1bf957a0 | 851 | |
834e9996 | 852 | enum bt_graph_status |
7b53201c PP |
853 | bt_graph_add_source_component_output_port_added_listener( |
854 | struct bt_graph *graph, | |
855 | bt_graph_source_component_output_port_added_listener_func func, | |
856 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 | 857 | int *out_listener_id) |
1bf957a0 | 858 | { |
834e9996 PP |
859 | struct bt_graph_listener_port_added listener = { |
860 | .base = { | |
861 | .removed = listener_removed, | |
862 | .data = data, | |
863 | }, | |
864 | .func = (port_added_func_t) func, | |
1bf957a0 | 865 | }; |
834e9996 | 866 | int listener_id; |
1bf957a0 | 867 | |
834e9996 PP |
868 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
869 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
870 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
871 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
872 | "Graph currently executing a \"listener removed\" listener: " | |
873 | "%!+g", graph); | |
874 | g_array_append_val(graph->listeners.source_output_port_added, listener); | |
875 | listener_id = graph->listeners.source_output_port_added->len - 1; | |
876 | BT_LIB_LOGV("Added \"source component output port added\" listener to graph: " | |
877 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
878 | listener_id); | |
879 | ||
880 | if (listener_id) { | |
881 | *out_listener_id = listener_id; | |
882 | } | |
883 | ||
884 | return BT_GRAPH_STATUS_OK; | |
1bf957a0 PP |
885 | } |
886 | ||
834e9996 | 887 | enum bt_graph_status |
7b53201c PP |
888 | bt_graph_add_filter_component_output_port_added_listener( |
889 | struct bt_graph *graph, | |
890 | bt_graph_filter_component_output_port_added_listener_func func, | |
891 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 | 892 | int *out_listener_id) |
1bf957a0 | 893 | { |
834e9996 PP |
894 | struct bt_graph_listener_port_added listener = { |
895 | .base = { | |
896 | .removed = listener_removed, | |
897 | .data = data, | |
898 | }, | |
899 | .func = (port_added_func_t) func, | |
900 | }; | |
901 | int listener_id; | |
1bf957a0 | 902 | |
834e9996 PP |
903 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
904 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
905 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
906 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
907 | "Graph currently executing a \"listener removed\" listener: " | |
908 | "%!+g", graph); | |
909 | g_array_append_val(graph->listeners.filter_output_port_added, listener); | |
910 | listener_id = graph->listeners.filter_output_port_added->len - 1; | |
911 | BT_LIB_LOGV("Added \"filter component output port added\" listener to graph: " | |
912 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
913 | listener_id); | |
914 | ||
915 | if (listener_id) { | |
916 | *out_listener_id = listener_id; | |
917 | } | |
918 | ||
919 | return BT_GRAPH_STATUS_OK; | |
920 | } | |
262e5473 | 921 | |
834e9996 | 922 | enum bt_graph_status |
7b53201c PP |
923 | bt_graph_add_filter_component_input_port_added_listener( |
924 | struct bt_graph *graph, | |
925 | bt_graph_filter_component_input_port_added_listener_func func, | |
926 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
927 | int *out_listener_id) |
928 | { | |
834e9996 PP |
929 | struct bt_graph_listener_port_added listener = { |
930 | .base = { | |
931 | .removed = listener_removed, | |
932 | .data = data, | |
933 | }, | |
934 | .func = (port_added_func_t) func, | |
935 | }; | |
936 | int listener_id; | |
eb87cce7 | 937 | |
834e9996 PP |
938 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
939 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
940 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
941 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
942 | "Graph currently executing a \"listener removed\" listener: " | |
943 | "%!+g", graph); | |
944 | g_array_append_val(graph->listeners.filter_input_port_added, listener); | |
945 | listener_id = graph->listeners.filter_input_port_added->len - 1; | |
946 | BT_LIB_LOGV("Added \"filter component input port added\" listener to graph: " | |
947 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
948 | listener_id); | |
949 | ||
950 | if (listener_id) { | |
951 | *out_listener_id = listener_id; | |
952 | } | |
953 | ||
954 | return BT_GRAPH_STATUS_OK; | |
955 | } | |
1bf957a0 | 956 | |
834e9996 | 957 | enum bt_graph_status |
7b53201c PP |
958 | bt_graph_add_sink_component_input_port_added_listener( |
959 | struct bt_graph *graph, | |
960 | bt_graph_sink_component_input_port_added_listener_func func, | |
961 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
962 | int *out_listener_id) |
963 | { | |
834e9996 PP |
964 | struct bt_graph_listener_port_added listener = { |
965 | .base = { | |
966 | .removed = listener_removed, | |
967 | .data = data, | |
968 | }, | |
969 | .func = (port_added_func_t) func, | |
970 | }; | |
971 | int listener_id; | |
1bf957a0 | 972 | |
834e9996 PP |
973 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
974 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
975 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
976 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
977 | "Graph currently executing a \"listener removed\" listener: " | |
978 | "%!+g", graph); | |
979 | g_array_append_val(graph->listeners.sink_input_port_added, listener); | |
980 | listener_id = graph->listeners.sink_input_port_added->len - 1; | |
981 | BT_LIB_LOGV("Added \"sink component input port added\" listener to graph: " | |
982 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
983 | listener_id); | |
984 | ||
985 | if (listener_id) { | |
986 | *out_listener_id = listener_id; | |
987 | } | |
988 | ||
989 | return BT_GRAPH_STATUS_OK; | |
1bf957a0 PP |
990 | } |
991 | ||
834e9996 | 992 | enum bt_graph_status |
7b53201c PP |
993 | bt_graph_add_source_component_output_port_removed_listener( |
994 | struct bt_graph *graph, | |
995 | bt_graph_source_component_output_port_removed_listener_func func, | |
996 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 | 997 | int *out_listener_id) |
1bf957a0 | 998 | { |
834e9996 PP |
999 | struct bt_graph_listener_port_removed listener = { |
1000 | .base = { | |
1001 | .removed = listener_removed, | |
1002 | .data = data, | |
1003 | }, | |
1004 | .func = (port_removed_func_t) func, | |
1005 | }; | |
1006 | int listener_id; | |
1bf957a0 | 1007 | |
834e9996 PP |
1008 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1009 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1010 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1011 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1012 | "Graph currently executing a \"listener removed\" listener: " | |
1013 | "%!+g", graph); | |
1014 | g_array_append_val(graph->listeners.source_output_port_removed, listener); | |
1015 | listener_id = graph->listeners.source_output_port_removed->len - 1; | |
1016 | BT_LIB_LOGV("Added \"source component output port removed\" listener to graph: " | |
1017 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1018 | listener_id); | |
1019 | ||
1020 | if (listener_id) { | |
1021 | *out_listener_id = listener_id; | |
1022 | } | |
1023 | ||
1024 | return BT_GRAPH_STATUS_OK; | |
1025 | } | |
262e5473 | 1026 | |
834e9996 | 1027 | enum bt_graph_status |
7b53201c PP |
1028 | bt_graph_add_filter_component_output_port_removed_listener( |
1029 | struct bt_graph *graph, | |
1030 | bt_graph_filter_component_output_port_removed_listener_func func, | |
1031 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1032 | int *out_listener_id) |
1033 | { | |
834e9996 PP |
1034 | struct bt_graph_listener_port_removed listener = { |
1035 | .base = { | |
1036 | .removed = listener_removed, | |
1037 | .data = data, | |
1038 | }, | |
1039 | .func = (port_removed_func_t) func, | |
1040 | }; | |
1041 | int listener_id; | |
eb87cce7 | 1042 | |
834e9996 PP |
1043 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1044 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1045 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1046 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1047 | "Graph currently executing a \"listener removed\" listener: " | |
1048 | "%!+g", graph); | |
1049 | g_array_append_val(graph->listeners.filter_output_port_removed, listener); | |
1050 | listener_id = graph->listeners.filter_output_port_removed->len - 1; | |
1051 | BT_LIB_LOGV("Added \"filter component output port removed\" listener to graph: " | |
1052 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1053 | listener_id); | |
1054 | ||
1055 | if (listener_id) { | |
1056 | *out_listener_id = listener_id; | |
1057 | } | |
1058 | ||
1059 | return BT_GRAPH_STATUS_OK; | |
1060 | } | |
1bf957a0 | 1061 | |
834e9996 | 1062 | enum bt_graph_status |
7b53201c PP |
1063 | bt_graph_add_filter_component_input_port_removed_listener( |
1064 | struct bt_graph *graph, | |
1065 | bt_graph_filter_component_input_port_removed_listener_func func, | |
1066 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1067 | int *out_listener_id) |
1068 | { | |
834e9996 PP |
1069 | struct bt_graph_listener_port_removed listener = { |
1070 | .base = { | |
1071 | .removed = listener_removed, | |
1072 | .data = data, | |
1073 | }, | |
1074 | .func = (port_removed_func_t) func, | |
1075 | }; | |
1076 | int listener_id; | |
1bf957a0 | 1077 | |
834e9996 PP |
1078 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1079 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1080 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1081 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1082 | "Graph currently executing a \"listener removed\" listener: " | |
1083 | "%!+g", graph); | |
1084 | g_array_append_val(graph->listeners.filter_input_port_removed, listener); | |
1085 | listener_id = graph->listeners.filter_input_port_removed->len - 1; | |
1086 | BT_LIB_LOGV("Added \"filter component input port removed\" listener to graph: " | |
1087 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1088 | listener_id); | |
1089 | ||
1090 | if (listener_id) { | |
1091 | *out_listener_id = listener_id; | |
1092 | } | |
1093 | ||
1094 | return BT_GRAPH_STATUS_OK; | |
1bf957a0 PP |
1095 | } |
1096 | ||
834e9996 | 1097 | enum bt_graph_status |
7b53201c PP |
1098 | bt_graph_add_sink_component_input_port_removed_listener( |
1099 | struct bt_graph *graph, | |
1100 | bt_graph_sink_component_input_port_removed_listener_func func, | |
1101 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 | 1102 | int *out_listener_id) |
1bf957a0 | 1103 | { |
834e9996 PP |
1104 | struct bt_graph_listener_port_removed listener = { |
1105 | .base = { | |
1106 | .removed = listener_removed, | |
1107 | .data = data, | |
1108 | }, | |
1109 | .func = (port_removed_func_t) func, | |
1110 | }; | |
1111 | int listener_id; | |
1bf957a0 | 1112 | |
834e9996 PP |
1113 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1114 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1115 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1116 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1117 | "Graph currently executing a \"listener removed\" listener: " | |
1118 | "%!+g", graph); | |
1119 | g_array_append_val(graph->listeners.sink_input_port_removed, listener); | |
1120 | listener_id = graph->listeners.sink_input_port_removed->len - 1; | |
1121 | BT_LIB_LOGV("Added \"sink component input port removed\" listener to graph: " | |
1122 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1123 | listener_id); | |
1124 | ||
1125 | if (listener_id) { | |
1126 | *out_listener_id = listener_id; | |
1127 | } | |
1128 | ||
1129 | return BT_GRAPH_STATUS_OK; | |
1130 | } | |
262e5473 | 1131 | |
834e9996 | 1132 | enum bt_graph_status |
7b53201c PP |
1133 | bt_graph_add_source_filter_component_ports_connected_listener( |
1134 | struct bt_graph *graph, | |
1135 | bt_graph_source_filter_component_ports_connected_listener_func func, | |
1136 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1137 | int *out_listener_id) |
1138 | { | |
834e9996 PP |
1139 | struct bt_graph_listener_ports_connected listener = { |
1140 | .base = { | |
1141 | .removed = listener_removed, | |
1142 | .data = data, | |
1143 | }, | |
1144 | .func = (ports_connected_func_t) func, | |
1145 | }; | |
1146 | int listener_id; | |
eb87cce7 | 1147 | |
834e9996 PP |
1148 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1149 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1150 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1151 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1152 | "Graph currently executing a \"listener removed\" listener: " | |
1153 | "%!+g", graph); | |
1154 | g_array_append_val(graph->listeners.source_filter_ports_connected, | |
1155 | listener); | |
1156 | listener_id = graph->listeners.source_filter_ports_connected->len - 1; | |
1157 | BT_LIB_LOGV("Added \"source to filter component ports connected\" listener to graph: " | |
1158 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1159 | listener_id); | |
1160 | ||
1161 | if (listener_id) { | |
1162 | *out_listener_id = listener_id; | |
1163 | } | |
1164 | ||
1165 | return BT_GRAPH_STATUS_OK; | |
1166 | } | |
1bf957a0 | 1167 | |
834e9996 | 1168 | enum bt_graph_status |
7b53201c PP |
1169 | bt_graph_add_source_sink_component_ports_connected_listener( |
1170 | struct bt_graph *graph, | |
1171 | bt_graph_source_sink_component_ports_connected_listener_func func, | |
1172 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1173 | int *out_listener_id) |
1174 | { | |
834e9996 PP |
1175 | struct bt_graph_listener_ports_connected listener = { |
1176 | .base = { | |
1177 | .removed = listener_removed, | |
1178 | .data = data, | |
1179 | }, | |
1180 | .func = (ports_connected_func_t) func, | |
1181 | }; | |
1182 | int listener_id; | |
1bf957a0 | 1183 | |
834e9996 PP |
1184 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1185 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1186 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1187 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1188 | "Graph currently executing a \"listener removed\" listener: " | |
1189 | "%!+g", graph); | |
1190 | g_array_append_val(graph->listeners.source_sink_ports_connected, | |
1191 | listener); | |
1192 | listener_id = graph->listeners.source_sink_ports_connected->len - 1; | |
1193 | BT_LIB_LOGV("Added \"source to sink component ports connected\" listener to graph: " | |
1194 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1195 | listener_id); | |
1196 | ||
1197 | if (listener_id) { | |
1198 | *out_listener_id = listener_id; | |
1199 | } | |
1200 | ||
1201 | return BT_GRAPH_STATUS_OK; | |
1bf957a0 PP |
1202 | } |
1203 | ||
834e9996 | 1204 | enum bt_graph_status |
7b53201c PP |
1205 | bt_graph_add_filter_sink_component_ports_connected_listener( |
1206 | struct bt_graph *graph, | |
1207 | bt_graph_filter_sink_component_ports_connected_listener_func func, | |
1208 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 | 1209 | int *out_listener_id) |
1bf957a0 | 1210 | { |
834e9996 PP |
1211 | struct bt_graph_listener_ports_connected listener = { |
1212 | .base = { | |
1213 | .removed = listener_removed, | |
1214 | .data = data, | |
1215 | }, | |
1216 | .func = (ports_connected_func_t) func, | |
1217 | }; | |
1218 | int listener_id; | |
1bf957a0 | 1219 | |
834e9996 PP |
1220 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1221 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1222 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1223 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1224 | "Graph currently executing a \"listener removed\" listener: " | |
1225 | "%!+g", graph); | |
1226 | g_array_append_val(graph->listeners.filter_sink_ports_connected, | |
1227 | listener); | |
1228 | listener_id = graph->listeners.filter_sink_ports_connected->len - 1; | |
1229 | BT_LIB_LOGV("Added \"filter to sink component ports connected\" listener to graph: " | |
1230 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1231 | listener_id); | |
1232 | ||
1233 | if (listener_id) { | |
1234 | *out_listener_id = listener_id; | |
1235 | } | |
1236 | ||
1237 | return BT_GRAPH_STATUS_OK; | |
1238 | } | |
262e5473 | 1239 | |
834e9996 | 1240 | enum bt_graph_status |
7b53201c PP |
1241 | bt_graph_add_source_filter_component_ports_disconnected_listener( |
1242 | struct bt_graph *graph, | |
1243 | bt_graph_source_filter_component_ports_disconnected_listener_func func, | |
1244 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1245 | int *out_listener_id) |
1246 | { | |
834e9996 PP |
1247 | struct bt_graph_listener_ports_disconnected listener = { |
1248 | .base = { | |
1249 | .removed = listener_removed, | |
1250 | .data = data, | |
1251 | }, | |
1252 | .func = (ports_disconnected_func_t) func, | |
1253 | }; | |
1254 | int listener_id; | |
eb87cce7 | 1255 | |
834e9996 PP |
1256 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1257 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1258 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1259 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1260 | "Graph currently executing a \"listener removed\" listener: " | |
1261 | "%!+g", graph); | |
1262 | g_array_append_val(graph->listeners.source_filter_ports_disconnected, | |
1263 | listener); | |
1264 | listener_id = graph->listeners.source_filter_ports_disconnected->len - 1; | |
1265 | BT_LIB_LOGV("Added \"source to filter component ports disconnected\" listener to graph: " | |
1266 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1267 | listener_id); | |
1268 | ||
1269 | if (listener_id) { | |
1270 | *out_listener_id = listener_id; | |
1271 | } | |
1272 | ||
1273 | return BT_GRAPH_STATUS_OK; | |
1274 | } | |
1bf957a0 | 1275 | |
834e9996 | 1276 | enum bt_graph_status |
7b53201c PP |
1277 | bt_graph_add_source_sink_component_ports_disconnected_listener( |
1278 | struct bt_graph *graph, | |
1279 | bt_graph_source_sink_component_ports_disconnected_listener_func func, | |
1280 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1281 | int *out_listener_id) |
1282 | { | |
834e9996 PP |
1283 | struct bt_graph_listener_ports_disconnected listener = { |
1284 | .base = { | |
1285 | .removed = listener_removed, | |
1286 | .data = data, | |
1287 | }, | |
1288 | .func = (ports_disconnected_func_t) func, | |
1289 | }; | |
1290 | int listener_id; | |
1bf957a0 | 1291 | |
834e9996 PP |
1292 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1293 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1294 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1295 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1296 | "Graph currently executing a \"listener removed\" listener: " | |
1297 | "%!+g", graph); | |
1298 | g_array_append_val(graph->listeners.source_sink_ports_disconnected, | |
1299 | listener); | |
1300 | listener_id = graph->listeners.source_sink_ports_disconnected->len - 1; | |
1301 | BT_LIB_LOGV("Added \"source to sink component ports disconnected\" listener to graph: " | |
1302 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1303 | listener_id); | |
1304 | ||
1305 | if (listener_id) { | |
1306 | *out_listener_id = listener_id; | |
1307 | } | |
1308 | ||
1309 | return BT_GRAPH_STATUS_OK; | |
1310 | } | |
1311 | ||
1312 | enum bt_graph_status | |
7b53201c PP |
1313 | bt_graph_add_filter_sink_component_ports_disconnected_listener( |
1314 | struct bt_graph *graph, | |
1315 | bt_graph_filter_sink_component_ports_disconnected_listener_func func, | |
1316 | bt_graph_listener_removed_func listener_removed, void *data, | |
834e9996 PP |
1317 | int *out_listener_id) |
1318 | { | |
834e9996 PP |
1319 | struct bt_graph_listener_ports_disconnected listener = { |
1320 | .base = { | |
1321 | .removed = listener_removed, | |
1322 | .data = data, | |
1323 | }, | |
1324 | .func = (ports_disconnected_func_t) func, | |
1325 | }; | |
1326 | int listener_id; | |
1327 | ||
1328 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); | |
1329 | BT_ASSERT_PRE_NON_NULL(func, "Listener"); | |
1330 | BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); | |
1331 | BT_ASSERT_PRE(!graph->in_remove_listener, | |
1332 | "Graph currently executing a \"listener removed\" listener: " | |
1333 | "%!+g", graph); | |
1334 | g_array_append_val(graph->listeners.filter_sink_ports_disconnected, | |
1335 | listener); | |
1336 | listener_id = graph->listeners.filter_sink_ports_disconnected->len - 1; | |
1337 | BT_LIB_LOGV("Added \"filter to sink component ports disconnected\" listener to graph: " | |
1338 | "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, | |
1339 | listener_id); | |
1340 | ||
1341 | if (listener_id) { | |
1342 | *out_listener_id = listener_id; | |
1343 | } | |
1344 | ||
1345 | return BT_GRAPH_STATUS_OK; | |
1bf957a0 PP |
1346 | } |
1347 | ||
1348 | BT_HIDDEN | |
1349 | void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port) | |
1350 | { | |
834e9996 PP |
1351 | uint64_t i; |
1352 | GArray *listeners; | |
1353 | struct bt_component *comp; | |
1bf957a0 | 1354 | |
834e9996 PP |
1355 | BT_ASSERT(graph); |
1356 | BT_ASSERT(port); | |
1357 | BT_LIB_LOGV("Notifying graph listeners that a port was added: " | |
1358 | "%![graph-]+g, %![port-]+p", graph, port); | |
7b53201c | 1359 | comp = bt_port_borrow_component_inline(port); |
834e9996 PP |
1360 | BT_ASSERT(comp); |
1361 | ||
1362 | switch (comp->class->type) { | |
1363 | case BT_COMPONENT_CLASS_TYPE_SOURCE: | |
1364 | { | |
1365 | switch (port->type) { | |
1366 | case BT_PORT_TYPE_OUTPUT: | |
1367 | listeners = graph->listeners.source_output_port_added; | |
1368 | break; | |
1369 | default: | |
1370 | abort(); | |
1371 | } | |
1372 | ||
1373 | break; | |
1374 | } | |
1375 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1376 | { | |
1377 | switch (port->type) { | |
1378 | case BT_PORT_TYPE_INPUT: | |
1379 | listeners = graph->listeners.filter_input_port_added; | |
1380 | break; | |
1381 | case BT_PORT_TYPE_OUTPUT: | |
1382 | listeners = graph->listeners.filter_output_port_added; | |
1383 | break; | |
1384 | default: | |
1385 | abort(); | |
1386 | } | |
262e5473 | 1387 | |
834e9996 PP |
1388 | break; |
1389 | } | |
1390 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1391 | { | |
1392 | switch (port->type) { | |
1393 | case BT_PORT_TYPE_INPUT: | |
1394 | listeners = graph->listeners.sink_input_port_added; | |
1395 | break; | |
1396 | default: | |
1397 | abort(); | |
1398 | } | |
1bf957a0 | 1399 | |
834e9996 PP |
1400 | break; |
1401 | } | |
1402 | default: | |
1403 | abort(); | |
1404 | } | |
1405 | ||
1406 | for (i = 0; i < listeners->len; i++) { | |
1407 | struct bt_graph_listener_port_added *listener = | |
1408 | &g_array_index(listeners, | |
1409 | struct bt_graph_listener_port_added, i); | |
1410 | ||
1411 | BT_ASSERT(listener->func); | |
1412 | listener->func(comp, port, listener->base.data); | |
1bf957a0 PP |
1413 | } |
1414 | } | |
1415 | ||
1416 | BT_HIDDEN | |
1417 | void bt_graph_notify_port_removed(struct bt_graph *graph, | |
1418 | struct bt_component *comp, struct bt_port *port) | |
1419 | { | |
834e9996 PP |
1420 | uint64_t i; |
1421 | GArray *listeners; | |
1422 | ||
1423 | BT_ASSERT(graph); | |
1424 | BT_ASSERT(port); | |
1425 | BT_LIB_LOGV("Notifying graph listeners that a port was removed: " | |
1426 | "%![graph-]+g, %![comp-]+c, %![port-]+p", graph, comp, port); | |
1427 | ||
1428 | switch (comp->class->type) { | |
1429 | case BT_COMPONENT_CLASS_TYPE_SOURCE: | |
1430 | { | |
1431 | switch (port->type) { | |
1432 | case BT_PORT_TYPE_OUTPUT: | |
1433 | listeners = graph->listeners.source_output_port_removed; | |
1434 | break; | |
1435 | default: | |
1436 | abort(); | |
1437 | } | |
1438 | ||
1439 | break; | |
1440 | } | |
1441 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1442 | { | |
1443 | switch (port->type) { | |
1444 | case BT_PORT_TYPE_INPUT: | |
1445 | listeners = graph->listeners.filter_input_port_removed; | |
1446 | break; | |
1447 | case BT_PORT_TYPE_OUTPUT: | |
1448 | listeners = graph->listeners.filter_output_port_removed; | |
1449 | break; | |
1450 | default: | |
1451 | abort(); | |
1452 | } | |
1453 | ||
1454 | break; | |
1455 | } | |
1456 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1457 | { | |
1458 | switch (port->type) { | |
1459 | case BT_PORT_TYPE_INPUT: | |
1460 | listeners = graph->listeners.sink_input_port_removed; | |
1461 | break; | |
1462 | default: | |
1463 | abort(); | |
1464 | } | |
1bf957a0 | 1465 | |
834e9996 PP |
1466 | break; |
1467 | } | |
1468 | default: | |
1469 | abort(); | |
1470 | } | |
262e5473 | 1471 | |
834e9996 PP |
1472 | for (i = 0; i < listeners->len; i++) { |
1473 | struct bt_graph_listener_port_removed *listener = | |
1474 | &g_array_index(listeners, | |
1475 | struct bt_graph_listener_port_removed, i); | |
1bf957a0 | 1476 | |
834e9996 PP |
1477 | BT_ASSERT(listener->func); |
1478 | listener->func(comp, port, listener->base.data); | |
1bf957a0 PP |
1479 | } |
1480 | } | |
1481 | ||
1482 | BT_HIDDEN | |
f345f8bb PP |
1483 | void bt_graph_notify_ports_connected(struct bt_graph *graph, |
1484 | struct bt_port *upstream_port, struct bt_port *downstream_port) | |
1bf957a0 | 1485 | { |
834e9996 PP |
1486 | uint64_t i; |
1487 | GArray *listeners; | |
1488 | struct bt_component *upstream_comp; | |
1489 | struct bt_component *downstream_comp; | |
1bf957a0 | 1490 | |
834e9996 PP |
1491 | BT_ASSERT(graph); |
1492 | BT_ASSERT(upstream_port); | |
1493 | BT_ASSERT(downstream_port); | |
1494 | BT_LIB_LOGV("Notifying graph listeners that ports were connected: " | |
1495 | "%![graph-]+g, %![up-port-]+p, %![down-port-]+p", | |
1496 | graph, upstream_port, downstream_port); | |
7b53201c | 1497 | upstream_comp = bt_port_borrow_component_inline(upstream_port); |
834e9996 | 1498 | BT_ASSERT(upstream_comp); |
7b53201c | 1499 | downstream_comp = bt_port_borrow_component_inline(downstream_port); |
834e9996 PP |
1500 | BT_ASSERT(downstream_comp); |
1501 | ||
1502 | switch (upstream_comp->class->type) { | |
1503 | case BT_COMPONENT_CLASS_TYPE_SOURCE: | |
1504 | { | |
1505 | switch (downstream_comp->class->type) { | |
1506 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1507 | listeners = | |
1508 | graph->listeners.source_filter_ports_connected; | |
1509 | break; | |
1510 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1511 | listeners = | |
1512 | graph->listeners.source_sink_ports_connected; | |
1513 | break; | |
1514 | default: | |
1515 | abort(); | |
1516 | } | |
262e5473 | 1517 | |
834e9996 PP |
1518 | break; |
1519 | } | |
1520 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1521 | { | |
1522 | switch (downstream_comp->class->type) { | |
1523 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1524 | listeners = | |
1525 | graph->listeners.filter_sink_ports_connected; | |
1526 | break; | |
1527 | default: | |
1528 | abort(); | |
1529 | } | |
1bf957a0 | 1530 | |
834e9996 PP |
1531 | break; |
1532 | } | |
1533 | default: | |
1534 | abort(); | |
1535 | } | |
1536 | ||
1537 | for (i = 0; i < listeners->len; i++) { | |
1538 | struct bt_graph_listener_ports_connected *listener = | |
1539 | &g_array_index(listeners, | |
1540 | struct bt_graph_listener_ports_connected, i); | |
1541 | ||
1542 | BT_ASSERT(listener->func); | |
1543 | listener->func(upstream_comp, downstream_comp, | |
1544 | upstream_port, downstream_port, listener->base.data); | |
1bf957a0 PP |
1545 | } |
1546 | } | |
1547 | ||
1548 | BT_HIDDEN | |
f345f8bb PP |
1549 | void bt_graph_notify_ports_disconnected(struct bt_graph *graph, |
1550 | struct bt_component *upstream_comp, | |
1551 | struct bt_component *downstream_comp, | |
834e9996 PP |
1552 | struct bt_port *upstream_port, |
1553 | struct bt_port *downstream_port) | |
1bf957a0 | 1554 | { |
834e9996 PP |
1555 | uint64_t i; |
1556 | GArray *listeners; | |
1557 | ||
1558 | BT_ASSERT(graph); | |
1559 | BT_ASSERT(upstream_comp); | |
1560 | BT_ASSERT(downstream_comp); | |
1561 | BT_ASSERT(upstream_port); | |
1562 | BT_ASSERT(downstream_port); | |
1563 | BT_LIB_LOGV("Notifying graph listeners that ports were disconnected: " | |
1564 | "%![graph-]+g, %![up-port-]+p, %![down-port-]+p, " | |
1565 | "%![up-comp-]+c, %![down-comp-]+c", | |
1566 | graph, upstream_port, downstream_port, upstream_comp, | |
1567 | downstream_comp); | |
1568 | ||
1569 | switch (upstream_comp->class->type) { | |
1570 | case BT_COMPONENT_CLASS_TYPE_SOURCE: | |
1571 | { | |
1572 | switch (downstream_comp->class->type) { | |
1573 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1574 | listeners = | |
1575 | graph->listeners.source_filter_ports_disconnected; | |
1576 | break; | |
1577 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1578 | listeners = | |
1579 | graph->listeners.source_sink_ports_disconnected; | |
1580 | break; | |
1581 | default: | |
1582 | abort(); | |
1583 | } | |
1bf957a0 | 1584 | |
834e9996 PP |
1585 | break; |
1586 | } | |
1587 | case BT_COMPONENT_CLASS_TYPE_FILTER: | |
1588 | { | |
1589 | switch (downstream_comp->class->type) { | |
1590 | case BT_COMPONENT_CLASS_TYPE_SINK: | |
1591 | listeners = | |
1592 | graph->listeners.filter_sink_ports_disconnected; | |
1593 | break; | |
1594 | default: | |
1595 | abort(); | |
1596 | } | |
1597 | ||
1598 | break; | |
1599 | } | |
1600 | default: | |
1601 | abort(); | |
1602 | } | |
262e5473 | 1603 | |
834e9996 PP |
1604 | for (i = 0; i < listeners->len; i++) { |
1605 | struct bt_graph_listener_ports_disconnected *listener = | |
1606 | &g_array_index(listeners, | |
1607 | struct bt_graph_listener_ports_disconnected, i); | |
1bf957a0 | 1608 | |
834e9996 PP |
1609 | BT_ASSERT(listener->func); |
1610 | listener->func(upstream_comp, downstream_comp, | |
1611 | upstream_port, downstream_port, listener->base.data); | |
1bf957a0 PP |
1612 | } |
1613 | } | |
202a3a13 | 1614 | |
7b53201c PP |
1615 | enum bt_graph_status bt_graph_cancel( |
1616 | struct bt_graph *graph) | |
202a3a13 | 1617 | { |
202a3a13 | 1618 | |
834e9996 PP |
1619 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1620 | graph->canceled = true; | |
1621 | BT_LIB_LOGV("Canceled graph: %!+i", graph); | |
1622 | return BT_GRAPH_STATUS_OK; | |
202a3a13 PP |
1623 | } |
1624 | ||
7b53201c | 1625 | bt_bool bt_graph_is_canceled(const struct bt_graph *graph) |
202a3a13 | 1626 | { |
834e9996 PP |
1627 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); |
1628 | return graph->canceled ? BT_TRUE : BT_FALSE; | |
202a3a13 | 1629 | } |
f167d3c0 PP |
1630 | |
1631 | BT_HIDDEN | |
1632 | void bt_graph_remove_connection(struct bt_graph *graph, | |
1633 | struct bt_connection *connection) | |
1634 | { | |
8b45963b PP |
1635 | BT_ASSERT(graph); |
1636 | BT_ASSERT(connection); | |
834e9996 | 1637 | BT_LIB_LOGV("Removing graph's connection: %![graph-]+g, %![conn-]+x", |
262e5473 | 1638 | graph, connection); |
f167d3c0 PP |
1639 | g_ptr_array_remove(graph->connections, connection); |
1640 | } | |
36712f1d | 1641 | |
834e9996 PP |
1642 | BT_ASSERT_PRE_FUNC |
1643 | static inline | |
1644 | bool component_name_exists(struct bt_graph *graph, const char *name) | |
1645 | { | |
1646 | bool exists = false; | |
1647 | uint64_t i; | |
1648 | ||
1649 | for (i = 0; i < graph->components->len; i++) { | |
1650 | struct bt_component *other_comp = graph->components->pdata[i]; | |
1651 | ||
1652 | if (strcmp(name, bt_component_get_name(other_comp)) == 0) { | |
1653 | BT_ASSERT_PRE_MSG("Another component with the same name already exists in the graph: " | |
1654 | "%![other-comp-]+c, name=\"%s\"", | |
1655 | other_comp, name); | |
1656 | exists = true; | |
1657 | goto end; | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | end: | |
1662 | return exists; | |
1663 | } | |
1664 | ||
1665 | static | |
1666 | enum bt_graph_status add_component_with_init_method_data( | |
7b53201c | 1667 | struct bt_graph *graph, |
834e9996 PP |
1668 | struct bt_component_class *comp_cls, |
1669 | comp_init_method_t init_method, | |
ce141536 | 1670 | const char *name, const struct bt_value *params, |
834e9996 | 1671 | void *init_method_data, struct bt_component **user_component) |
36712f1d PP |
1672 | { |
1673 | enum bt_graph_status graph_status = BT_GRAPH_STATUS_OK; | |
834e9996 | 1674 | enum bt_self_component_status comp_status; |
36712f1d | 1675 | struct bt_component *component = NULL; |
834e9996 PP |
1676 | int ret; |
1677 | bool init_can_consume; | |
ce141536 | 1678 | struct bt_value *new_params = NULL; |
36712f1d | 1679 | |
834e9996 PP |
1680 | BT_ASSERT(comp_cls); |
1681 | BT_ASSERT_PRE_NON_NULL(graph, "Graph"); | |
1682 | BT_ASSERT_PRE_NON_NULL(name, "Name"); | |
1683 | BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); | |
1684 | BT_ASSERT_PRE(!component_name_exists(graph, name), | |
1685 | "Duplicate component name: %!+g, name=\"%s\"", graph, name); | |
1686 | BT_ASSERT_PRE(!params || bt_value_is_map(params), | |
1687 | "Parameter value is not a map value: %!+v", params); | |
3afb93ee | 1688 | init_can_consume = graph->can_consume; |
834e9996 PP |
1689 | bt_graph_set_can_consume(graph, false); |
1690 | BT_LIB_LOGD("Adding component to graph: " | |
1691 | "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, " | |
36712f1d | 1692 | "init-method-data-addr=%p", |
834e9996 | 1693 | graph, comp_cls, name, params, init_method_data); |
36712f1d | 1694 | |
834e9996 | 1695 | if (!params) { |
ce141536 PP |
1696 | new_params = bt_value_map_create(); |
1697 | if (!new_params) { | |
36712f1d PP |
1698 | BT_LOGE_STR("Cannot create map value object."); |
1699 | graph_status = BT_GRAPH_STATUS_NOMEM; | |
1700 | goto end; | |
1701 | } | |
ce141536 PP |
1702 | |
1703 | params = new_params; | |
36712f1d PP |
1704 | } |
1705 | ||
834e9996 PP |
1706 | ret = bt_component_create(comp_cls, name, &component); |
1707 | if (ret) { | |
1708 | BT_LOGE("Cannot create empty component object: ret=%d", | |
1709 | ret); | |
1710 | graph_status = BT_GRAPH_STATUS_NOMEM; | |
36712f1d PP |
1711 | goto end; |
1712 | } | |
1713 | ||
1714 | /* | |
1715 | * The user's initialization method needs to see that this | |
1716 | * component is part of the graph. If the user method fails, we | |
1717 | * immediately remove the component from the graph's components. | |
1718 | */ | |
1719 | g_ptr_array_add(graph->components, component); | |
1720 | bt_component_set_graph(component, graph); | |
1721 | ||
834e9996 | 1722 | if (init_method) { |
36712f1d | 1723 | BT_LOGD_STR("Calling user's initialization method."); |
834e9996 | 1724 | comp_status = init_method(component, params, init_method_data); |
36712f1d | 1725 | BT_LOGD("User method returned: status=%s", |
834e9996 PP |
1726 | bt_self_component_status_string(comp_status)); |
1727 | if (comp_status != BT_SELF_COMPONENT_STATUS_OK) { | |
36712f1d | 1728 | BT_LOGW_STR("Initialization method failed."); |
834e9996 | 1729 | graph_status = (int) comp_status; |
36712f1d PP |
1730 | bt_component_set_graph(component, NULL); |
1731 | g_ptr_array_remove_fast(graph->components, component); | |
1732 | goto end; | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | /* | |
1737 | * Mark the component as initialized so that its finalization | |
1738 | * method is called when it is destroyed. | |
1739 | */ | |
1740 | component->initialized = true; | |
1741 | ||
1742 | /* | |
1743 | * If it's a sink component, it needs to be part of the graph's | |
1744 | * sink queue to be consumed by bt_graph_consume(). | |
1745 | */ | |
1746 | if (bt_component_is_sink(component)) { | |
834e9996 | 1747 | graph->has_sink = true; |
36712f1d PP |
1748 | g_queue_push_tail(graph->sinks_to_consume, component); |
1749 | } | |
1750 | ||
1751 | /* | |
1752 | * Freeze the component class now that it's instantiated at | |
1753 | * least once. | |
1754 | */ | |
1755 | BT_LOGD_STR("Freezing component class."); | |
834e9996 PP |
1756 | bt_component_class_freeze(comp_cls); |
1757 | BT_LIB_LOGD("Added component to graph: " | |
1758 | "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, " | |
1759 | "init-method-data-addr=%p, %![comp-]+c", | |
1760 | graph, comp_cls, name, params, init_method_data, component); | |
36712f1d PP |
1761 | |
1762 | if (user_component) { | |
1763 | /* Move reference to user */ | |
1764 | *user_component = component; | |
1765 | component = NULL; | |
1766 | } | |
1767 | ||
1768 | end: | |
8138bfe1 | 1769 | bt_object_put_ref(component); |
ce141536 | 1770 | bt_object_put_ref(new_params); |
834e9996 PP |
1771 | (void) init_can_consume; |
1772 | bt_graph_set_can_consume(graph, init_can_consume); | |
36712f1d PP |
1773 | return graph_status; |
1774 | } | |
1775 | ||
834e9996 | 1776 | enum bt_graph_status |
7b53201c PP |
1777 | bt_graph_add_source_component_with_init_method_data( |
1778 | struct bt_graph *graph, | |
1779 | const struct bt_component_class_source *comp_cls, | |
ce141536 | 1780 | const char *name, const struct bt_value *params, |
7b53201c PP |
1781 | void *init_method_data, |
1782 | const struct bt_component_source **component) | |
834e9996 PP |
1783 | { |
1784 | BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); | |
1785 | return add_component_with_init_method_data(graph, | |
1786 | (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, | |
1787 | name, params, init_method_data, (void *) component); | |
1788 | } | |
1789 | ||
7b53201c PP |
1790 | enum bt_graph_status bt_graph_add_source_component( |
1791 | struct bt_graph *graph, | |
1792 | const struct bt_component_class_source *comp_cls, | |
ce141536 | 1793 | const char *name, const struct bt_value *params, |
7b53201c | 1794 | const struct bt_component_source **component) |
834e9996 | 1795 | { |
7b53201c | 1796 | return bt_graph_add_source_component_with_init_method_data( |
834e9996 PP |
1797 | graph, comp_cls, name, params, NULL, component); |
1798 | } | |
1799 | ||
1800 | enum bt_graph_status | |
7b53201c PP |
1801 | bt_graph_add_filter_component_with_init_method_data( |
1802 | struct bt_graph *graph, | |
1803 | const struct bt_component_class_filter *comp_cls, | |
ce141536 | 1804 | const char *name, const struct bt_value *params, |
7b53201c PP |
1805 | void *init_method_data, |
1806 | const struct bt_component_filter **component) | |
834e9996 PP |
1807 | { |
1808 | BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); | |
1809 | return add_component_with_init_method_data(graph, | |
1810 | (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, | |
1811 | name, params, init_method_data, (void *) component); | |
1812 | } | |
1813 | ||
7b53201c PP |
1814 | enum bt_graph_status bt_graph_add_filter_component( |
1815 | struct bt_graph *graph, | |
1816 | const struct bt_component_class_filter *comp_cls, | |
ce141536 | 1817 | const char *name, const struct bt_value *params, |
7b53201c | 1818 | const struct bt_component_filter **component) |
834e9996 | 1819 | { |
7b53201c | 1820 | return bt_graph_add_filter_component_with_init_method_data( |
834e9996 PP |
1821 | graph, comp_cls, name, params, NULL, component); |
1822 | } | |
1823 | ||
1824 | enum bt_graph_status | |
7b53201c PP |
1825 | bt_graph_add_sink_component_with_init_method_data( |
1826 | struct bt_graph *graph, | |
1827 | const struct bt_component_class_sink *comp_cls, | |
ce141536 | 1828 | const char *name, const struct bt_value *params, |
7b53201c PP |
1829 | void *init_method_data, |
1830 | const struct bt_component_sink **component) | |
36712f1d | 1831 | { |
834e9996 PP |
1832 | BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); |
1833 | return add_component_with_init_method_data(graph, | |
1834 | (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, | |
1835 | name, params, init_method_data, (void *) component); | |
1836 | } | |
1837 | ||
7b53201c PP |
1838 | enum bt_graph_status bt_graph_add_sink_component( |
1839 | struct bt_graph *graph, | |
1840 | const struct bt_component_class_sink *comp_cls, | |
ce141536 | 1841 | const char *name, const struct bt_value *params, |
7b53201c | 1842 | const struct bt_component_sink **component) |
834e9996 | 1843 | { |
7b53201c | 1844 | return bt_graph_add_sink_component_with_init_method_data( |
834e9996 | 1845 | graph, comp_cls, name, params, NULL, component); |
36712f1d | 1846 | } |
c3ac0193 PP |
1847 | |
1848 | BT_HIDDEN | |
1849 | int bt_graph_remove_unconnected_component(struct bt_graph *graph, | |
1850 | struct bt_component *component) | |
1851 | { | |
834e9996 PP |
1852 | bool init_can_consume; |
1853 | uint64_t count; | |
c3ac0193 PP |
1854 | uint64_t i; |
1855 | int ret = 0; | |
1856 | ||
8b45963b PP |
1857 | BT_ASSERT(graph); |
1858 | BT_ASSERT(component); | |
1d7bf349 | 1859 | BT_ASSERT(component->base.ref_count == 0); |
8b45963b | 1860 | BT_ASSERT(bt_component_borrow_graph(component) == graph); |
c3ac0193 | 1861 | |
3afb93ee | 1862 | init_can_consume = graph->can_consume; |
c3ac0193 PP |
1863 | count = bt_component_get_input_port_count(component); |
1864 | ||
1865 | for (i = 0; i < count; i++) { | |
834e9996 PP |
1866 | struct bt_port *port = (void *) |
1867 | bt_component_borrow_input_port_by_index(component, i); | |
c3ac0193 | 1868 | |
8b45963b | 1869 | BT_ASSERT(port); |
c3ac0193 PP |
1870 | |
1871 | if (bt_port_is_connected(port)) { | |
834e9996 | 1872 | BT_LIB_LOGW("Cannot remove component from graph: " |
c3ac0193 | 1873 | "an input port is connected: " |
834e9996 PP |
1874 | "%![graph-]+g, %![comp-]+c, %![port-]+p", |
1875 | graph, component, port); | |
c3ac0193 PP |
1876 | goto error; |
1877 | } | |
1878 | } | |
1879 | ||
1880 | count = bt_component_get_output_port_count(component); | |
1881 | ||
1882 | for (i = 0; i < count; i++) { | |
834e9996 PP |
1883 | struct bt_port *port = (void *) |
1884 | bt_component_borrow_output_port_by_index(component, i); | |
c3ac0193 | 1885 | |
8b45963b | 1886 | BT_ASSERT(port); |
c3ac0193 PP |
1887 | |
1888 | if (bt_port_is_connected(port)) { | |
834e9996 | 1889 | BT_LIB_LOGW("Cannot remove component from graph: " |
c3ac0193 | 1890 | "an output port is connected: " |
834e9996 PP |
1891 | "%![graph-]+g, %![comp-]+c, %![port-]+p", |
1892 | graph, component, port); | |
c3ac0193 PP |
1893 | goto error; |
1894 | } | |
1895 | } | |
1896 | ||
834e9996 | 1897 | bt_graph_set_can_consume(graph, false); |
c3ac0193 PP |
1898 | |
1899 | /* Possibly remove from sinks to consume */ | |
1900 | (void) g_queue_remove(graph->sinks_to_consume, component); | |
1901 | ||
1902 | if (graph->sinks_to_consume->length == 0) { | |
834e9996 | 1903 | graph->has_sink = false; |
c3ac0193 PP |
1904 | } |
1905 | ||
1906 | /* | |
1d7bf349 PP |
1907 | * This calls bt_object_try_spec_release() on the component, and |
1908 | * since its reference count is 0, its destructor is called. Its | |
c3ac0193 PP |
1909 | * destructor calls the user's finalization method (if set). |
1910 | */ | |
1911 | g_ptr_array_remove(graph->components, component); | |
1912 | goto end; | |
1913 | ||
1914 | error: | |
1915 | ret = -1; | |
1916 | ||
1917 | end: | |
834e9996 PP |
1918 | (void) init_can_consume; |
1919 | bt_graph_set_can_consume(graph, init_can_consume); | |
c3ac0193 PP |
1920 | return ret; |
1921 | } | |
f7c3ac09 PP |
1922 | |
1923 | BT_HIDDEN | |
1924 | void bt_graph_add_notification(struct bt_graph *graph, | |
1925 | struct bt_notification *notif) | |
1926 | { | |
1927 | BT_ASSERT(graph); | |
1928 | BT_ASSERT(notif); | |
1929 | ||
1930 | /* | |
1931 | * It's okay not to take a reference because, when a | |
1932 | * notification's reference count drops to 0, either: | |
1933 | * | |
1934 | * * It is recycled back to one of this graph's pool. | |
1935 | * * It is destroyed because it doesn't have any link to any | |
1936 | * graph, which means the original graph is already destroyed. | |
1937 | */ | |
1938 | g_ptr_array_add(graph->notifications, notif); | |
1939 | } |