Commit | Line | Data |
---|---|---|
c0418dd9 | 1 | /* |
7d55361f | 2 | * graph.c |
c0418dd9 JG |
3 | * |
4 | * Babeltrace Plugin Component Graph | |
5 | * | |
f60c8b34 | 6 | * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
262e5473 | 7 | * Copyright 2017 Philippe Proulx <pproulx@efficios.com> |
c0418dd9 JG |
8 | * |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
22 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
262e5473 PP |
28 | #define BT_LOG_TAG "GRAPH" |
29 | #include <babeltrace/lib-logging-internal.h> | |
30 | ||
b2e0c907 PP |
31 | #include <babeltrace/graph/component-internal.h> |
32 | #include <babeltrace/graph/graph-internal.h> | |
33 | #include <babeltrace/graph/connection-internal.h> | |
34 | #include <babeltrace/graph/component-sink-internal.h> | |
35 | #include <babeltrace/graph/component-source.h> | |
36 | #include <babeltrace/graph/component-filter.h> | |
37 | #include <babeltrace/graph/port.h> | |
3d9990ac | 38 | #include <babeltrace/compiler-internal.h> |
c55a9f58 | 39 | #include <babeltrace/types.h> |
36712f1d PP |
40 | #include <babeltrace/values.h> |
41 | #include <babeltrace/values-internal.h> | |
f60c8b34 | 42 | #include <unistd.h> |
1bf957a0 PP |
43 | #include <glib.h> |
44 | ||
45 | struct bt_graph_listener { | |
46 | void *func; | |
eb87cce7 | 47 | bt_graph_listener_removed removed; |
1bf957a0 PP |
48 | void *data; |
49 | }; | |
c0418dd9 | 50 | |
eb87cce7 PP |
51 | static |
52 | int init_listeners_array(GArray **listeners) | |
53 | { | |
54 | int ret = 0; | |
55 | ||
56 | assert(listeners); | |
57 | *listeners = g_array_new(FALSE, TRUE, sizeof(struct bt_graph_listener)); | |
58 | if (!*listeners) { | |
59 | BT_LOGE_STR("Failed to allocate one GArray."); | |
60 | ret = -1; | |
61 | goto end; | |
62 | } | |
63 | ||
64 | end: | |
65 | return ret; | |
66 | } | |
67 | ||
68 | static | |
69 | void call_remove_listeners(GArray *listeners) | |
70 | { | |
71 | size_t i; | |
72 | ||
73 | for (i = 0; i < listeners->len; i++) { | |
74 | struct bt_graph_listener listener = | |
75 | g_array_index(listeners, struct bt_graph_listener, i); | |
76 | ||
77 | if (listener.removed) { | |
78 | listener.removed(listener.data); | |
79 | } | |
80 | } | |
81 | } | |
82 | ||
f60c8b34 JG |
83 | static |
84 | void bt_graph_destroy(struct bt_object *obj) | |
c0418dd9 | 85 | { |
f60c8b34 JG |
86 | struct bt_graph *graph = container_of(obj, |
87 | struct bt_graph, base); | |
c0418dd9 | 88 | |
bd14d768 PP |
89 | /* |
90 | * The graph's reference count is 0 if we're here. Increment | |
91 | * it to avoid a double-destroy (possibly infinitely recursive) | |
92 | * in this situation: | |
93 | * | |
94 | * 1. We put and destroy a connection. | |
95 | * 2. This connection's destructor finalizes its active | |
96 | * notification iterators. | |
97 | * 3. A notification iterator's finalization function gets a | |
98 | * new reference on its component (reference count goes from | |
99 | * 0 to 1). | |
100 | * 4. Since this component's reference count goes to 1, it takes | |
101 | * a reference on its parent (this graph). This graph's | |
102 | * reference count goes from 0 to 1. | |
103 | * 5. The notification iterator's finalization function puts its | |
104 | * component reference (reference count goes from 1 to 0). | |
105 | * 6. Since this component's reference count goes from 1 to 0, | |
106 | * it puts its parent (this graph). This graph's reference | |
107 | * count goes from 1 to 0. | |
108 | * 7. Since this graph's reference count goes from 1 to 0, | |
109 | * its destructor is called (this function). | |
110 | * | |
111 | * With the incrementation below, the graph's reference count at | |
112 | * step 4 goes from 1 to 2, and from 2 to 1 at step 6. This | |
113 | * ensures that this function is not called two times. | |
114 | */ | |
262e5473 | 115 | BT_LOGD("Destroying graph: addr=%p", graph); |
bd14d768 PP |
116 | obj->ref_count.count++; |
117 | ||
49682acd PP |
118 | /* |
119 | * Cancel the graph to disallow some operations, like creating | |
120 | * notification iterators and adding ports to components. | |
121 | */ | |
122 | (void) bt_graph_cancel(graph); | |
123 | ||
eb87cce7 PP |
124 | /* Call all remove listeners */ |
125 | call_remove_listeners(graph->listeners.port_added); | |
126 | call_remove_listeners(graph->listeners.port_removed); | |
127 | call_remove_listeners(graph->listeners.ports_connected); | |
128 | call_remove_listeners(graph->listeners.ports_disconnected); | |
129 | ||
c0418dd9 | 130 | if (graph->connections) { |
262e5473 | 131 | BT_LOGD_STR("Destroying connections."); |
c0418dd9 JG |
132 | g_ptr_array_free(graph->connections, TRUE); |
133 | } | |
bd14d768 | 134 | if (graph->components) { |
262e5473 | 135 | BT_LOGD_STR("Destroying components."); |
bd14d768 PP |
136 | g_ptr_array_free(graph->components, TRUE); |
137 | } | |
f60c8b34 JG |
138 | if (graph->sinks_to_consume) { |
139 | g_queue_free(graph->sinks_to_consume); | |
c0418dd9 | 140 | } |
1bf957a0 PP |
141 | |
142 | if (graph->listeners.port_added) { | |
143 | g_array_free(graph->listeners.port_added, TRUE); | |
144 | } | |
145 | ||
146 | if (graph->listeners.port_removed) { | |
147 | g_array_free(graph->listeners.port_removed, TRUE); | |
148 | } | |
149 | ||
f345f8bb PP |
150 | if (graph->listeners.ports_connected) { |
151 | g_array_free(graph->listeners.ports_connected, TRUE); | |
1bf957a0 PP |
152 | } |
153 | ||
f345f8bb PP |
154 | if (graph->listeners.ports_disconnected) { |
155 | g_array_free(graph->listeners.ports_disconnected, TRUE); | |
1bf957a0 PP |
156 | } |
157 | ||
c0418dd9 JG |
158 | g_free(graph); |
159 | } | |
160 | ||
f60c8b34 | 161 | struct bt_graph *bt_graph_create(void) |
c0418dd9 | 162 | { |
f60c8b34 | 163 | struct bt_graph *graph; |
1bf957a0 | 164 | int ret; |
c0418dd9 | 165 | |
262e5473 | 166 | BT_LOGD_STR("Creating graph object."); |
f60c8b34 | 167 | graph = g_new0(struct bt_graph, 1); |
c0418dd9 | 168 | if (!graph) { |
262e5473 | 169 | BT_LOGE_STR("Failed to allocate one graph."); |
c0418dd9 JG |
170 | goto end; |
171 | } | |
172 | ||
f60c8b34 | 173 | bt_object_init(graph, bt_graph_destroy); |
c0418dd9 | 174 | |
f60c8b34 | 175 | graph->connections = g_ptr_array_new_with_free_func(bt_object_release); |
c0418dd9 | 176 | if (!graph->connections) { |
262e5473 | 177 | BT_LOGE_STR("Failed to allocate one GPtrArray."); |
c0418dd9 JG |
178 | goto error; |
179 | } | |
f60c8b34 JG |
180 | graph->components = g_ptr_array_new_with_free_func(bt_object_release); |
181 | if (!graph->components) { | |
262e5473 | 182 | BT_LOGE_STR("Failed to allocate one GPtrArray."); |
f60c8b34 JG |
183 | goto error; |
184 | } | |
185 | graph->sinks_to_consume = g_queue_new(); | |
186 | if (!graph->sinks_to_consume) { | |
262e5473 | 187 | BT_LOGE_STR("Failed to allocate one GQueue."); |
c0418dd9 JG |
188 | goto error; |
189 | } | |
1bf957a0 | 190 | |
9ef22b36 | 191 | graph->can_consume = BT_TRUE; |
1bf957a0 PP |
192 | ret = init_listeners_array(&graph->listeners.port_added); |
193 | if (ret) { | |
262e5473 | 194 | BT_LOGE_STR("Cannot create the \"port added\" listener array."); |
1bf957a0 PP |
195 | goto error; |
196 | } | |
197 | ||
198 | ret = init_listeners_array(&graph->listeners.port_removed); | |
199 | if (ret) { | |
262e5473 | 200 | BT_LOGE_STR("Cannot create the \"port removed\" listener array."); |
1bf957a0 PP |
201 | goto error; |
202 | } | |
203 | ||
f345f8bb | 204 | ret = init_listeners_array(&graph->listeners.ports_connected); |
1bf957a0 | 205 | if (ret) { |
262e5473 | 206 | BT_LOGE_STR("Cannot create the \"port connected\" listener array."); |
1bf957a0 PP |
207 | goto error; |
208 | } | |
209 | ||
f345f8bb | 210 | ret = init_listeners_array(&graph->listeners.ports_disconnected); |
1bf957a0 | 211 | if (ret) { |
262e5473 | 212 | BT_LOGE_STR("Cannot create the \"port disconneted\" listener array."); |
1bf957a0 PP |
213 | goto error; |
214 | } | |
215 | ||
262e5473 PP |
216 | BT_LOGD("Created graph object: addr=%p", graph); |
217 | ||
c0418dd9 JG |
218 | end: |
219 | return graph; | |
220 | error: | |
221 | BT_PUT(graph); | |
222 | goto end; | |
223 | } | |
224 | ||
a256a42d PP |
225 | enum bt_graph_status bt_graph_connect_ports(struct bt_graph *graph, |
226 | struct bt_port *upstream_port, struct bt_port *downstream_port, | |
227 | struct bt_connection **user_connection) | |
f60c8b34 | 228 | { |
a256a42d | 229 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; |
f60c8b34 JG |
230 | struct bt_connection *connection = NULL; |
231 | struct bt_graph *upstream_graph = NULL; | |
232 | struct bt_graph *downstream_graph = NULL; | |
233 | struct bt_component *upstream_component = NULL; | |
234 | struct bt_component *downstream_component = NULL; | |
235 | enum bt_component_status component_status; | |
9ef22b36 | 236 | const bt_bool init_can_consume = graph->can_consume; |
f60c8b34 | 237 | |
262e5473 PP |
238 | if (!graph) { |
239 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
a256a42d | 240 | status = BT_GRAPH_STATUS_INVALID; |
262e5473 PP |
241 | goto end; |
242 | } | |
243 | ||
244 | if (!upstream_port) { | |
245 | BT_LOGW_STR("Invalid parameter: upstream port is NULL."); | |
a256a42d | 246 | status = BT_GRAPH_STATUS_INVALID; |
262e5473 PP |
247 | goto end; |
248 | } | |
249 | ||
250 | if (!downstream_port) { | |
251 | BT_LOGW_STR("Invalid parameter: downstream port is NULL."); | |
a256a42d | 252 | status = BT_GRAPH_STATUS_INVALID; |
f60c8b34 JG |
253 | goto end; |
254 | } | |
255 | ||
262e5473 PP |
256 | BT_LOGD("Connecting component ports within graph: " |
257 | "graph-addr=%p, " | |
258 | "upstream-port-addr=%p, upstream-port-name=\"%s\", " | |
259 | "downstream-port-addr=%p, downstream-port-name=\"%s\"", | |
260 | graph, upstream_port, bt_port_get_name(upstream_port), | |
261 | downstream_port, bt_port_get_name(downstream_port)); | |
262 | ||
202a3a13 | 263 | if (graph->canceled) { |
262e5473 | 264 | BT_LOGW_STR("Invalid parameter: graph is canceled."); |
a256a42d | 265 | status = BT_GRAPH_STATUS_CANCELED; |
202a3a13 PP |
266 | goto end; |
267 | } | |
268 | ||
9ef22b36 PP |
269 | graph->can_consume = BT_FALSE; |
270 | ||
72b913fb | 271 | /* Ensure appropriate types for upstream and downstream ports. */ |
f60c8b34 | 272 | if (bt_port_get_type(upstream_port) != BT_PORT_TYPE_OUTPUT) { |
262e5473 | 273 | BT_LOGW_STR("Invalid parameter: upstream port is not an output port."); |
a256a42d | 274 | status = BT_GRAPH_STATUS_INVALID; |
f60c8b34 JG |
275 | goto end; |
276 | } | |
277 | if (bt_port_get_type(downstream_port) != BT_PORT_TYPE_INPUT) { | |
262e5473 | 278 | BT_LOGW_STR("Invalid parameter: downstream port is not an input port."); |
a256a42d | 279 | status = BT_GRAPH_STATUS_INVALID; |
f60c8b34 JG |
280 | goto end; |
281 | } | |
282 | ||
72b913fb | 283 | /* Ensure that both ports are currently unconnected. */ |
0d8b4d8e | 284 | if (bt_port_is_connected(upstream_port)) { |
262e5473 | 285 | BT_LOGW_STR("Invalid parameter: upstream port is already connected."); |
a256a42d | 286 | status = BT_GRAPH_STATUS_INVALID; |
72b913fb PP |
287 | goto end; |
288 | } | |
289 | ||
0d8b4d8e | 290 | if (bt_port_is_connected(downstream_port)) { |
262e5473 | 291 | BT_LOGW_STR("Invalid parameter: downstream port is already connected."); |
a256a42d | 292 | status = BT_GRAPH_STATUS_INVALID; |
72b913fb PP |
293 | goto end; |
294 | } | |
295 | ||
296 | /* | |
297 | * Ensure that both ports are still attached to their creating | |
298 | * component. | |
299 | */ | |
f60c8b34 | 300 | upstream_component = bt_port_get_component(upstream_port); |
72b913fb | 301 | if (!upstream_component) { |
262e5473 | 302 | BT_LOGW_STR("Invalid parameter: upstream port is loose (does not belong to a component)"); |
a256a42d | 303 | status = BT_GRAPH_STATUS_INVALID; |
72b913fb PP |
304 | goto end; |
305 | } | |
306 | ||
307 | downstream_component = bt_port_get_component(downstream_port); | |
308 | if (!downstream_component) { | |
262e5473 | 309 | BT_LOGW_STR("Invalid parameter: downstream port is loose (does not belong to a component)"); |
a256a42d | 310 | status = BT_GRAPH_STATUS_INVALID; |
72b913fb PP |
311 | goto end; |
312 | } | |
313 | ||
262e5473 PP |
314 | BT_LOGD("Connecting component ports: " |
315 | "upstream-comp-addr=%p, upstream-comp-name=\"%s\", " | |
316 | "downstream-comp-addr=%p, downstream-comp-name=\"%s\"", | |
317 | upstream_component, bt_component_get_name(upstream_component), | |
318 | downstream_component, bt_component_get_name(downstream_component)); | |
319 | ||
0d8b4d8e PP |
320 | /* |
321 | * At this point the ports are not connected yet. Both | |
322 | * components need to accept an eventual connection to their | |
323 | * port by the other port before we continue. | |
324 | */ | |
262e5473 | 325 | BT_LOGD_STR("Asking upstream component to accept the connection."); |
0d8b4d8e PP |
326 | component_status = bt_component_accept_port_connection( |
327 | upstream_component, upstream_port, downstream_port); | |
328 | if (component_status != BT_COMPONENT_STATUS_OK) { | |
262e5473 PP |
329 | if (component_status == BT_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { |
330 | BT_LOGD_STR("Upstream component refused the connection."); | |
331 | } else { | |
332 | BT_LOGW("Cannot ask upstream component to accept the connection: " | |
333 | "status=%s", bt_component_status_string(component_status)); | |
334 | } | |
335 | ||
a256a42d PP |
336 | status = bt_graph_status_from_component_status( |
337 | component_status); | |
338 | goto end; | |
0d8b4d8e | 339 | } |
262e5473 PP |
340 | |
341 | BT_LOGD_STR("Asking downstream component to accept the connection."); | |
0d8b4d8e PP |
342 | component_status = bt_component_accept_port_connection( |
343 | downstream_component, downstream_port, upstream_port); | |
344 | if (component_status != BT_COMPONENT_STATUS_OK) { | |
262e5473 PP |
345 | if (component_status == BT_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { |
346 | BT_LOGD_STR("Downstream component refused the connection."); | |
347 | } else { | |
348 | BT_LOGW("Cannot ask downstream component to accept the connection: " | |
349 | "status=%s", bt_component_status_string(component_status)); | |
350 | } | |
351 | ||
a256a42d PP |
352 | status = bt_graph_status_from_component_status( |
353 | component_status); | |
354 | goto end; | |
0d8b4d8e PP |
355 | } |
356 | ||
262e5473 | 357 | BT_LOGD_STR("Creating connection."); |
f60c8b34 JG |
358 | connection = bt_connection_create(graph, upstream_port, |
359 | downstream_port); | |
360 | if (!connection) { | |
262e5473 | 361 | BT_LOGW("Cannot create connection object."); |
a256a42d PP |
362 | status = BT_GRAPH_STATUS_NOMEM; |
363 | goto end; | |
f60c8b34 JG |
364 | } |
365 | ||
262e5473 PP |
366 | BT_LOGD("Connection object created: conn-addr=%p", connection); |
367 | ||
f60c8b34 | 368 | /* |
72b913fb PP |
369 | * Ownership of upstream_component/downstream_component and of |
370 | * the connection object is transferred to the graph. | |
f60c8b34 JG |
371 | */ |
372 | g_ptr_array_add(graph->connections, connection); | |
ffeb0eed | 373 | |
f60c8b34 | 374 | /* |
0d8b4d8e | 375 | * Notify both components that their port is connected. |
f60c8b34 | 376 | */ |
262e5473 | 377 | BT_LOGD_STR("Notifying upstream component that its port is connected."); |
0d8b4d8e PP |
378 | bt_component_port_connected(upstream_component, upstream_port, |
379 | downstream_port); | |
262e5473 | 380 | BT_LOGD_STR("Notifying downstream component that its port is connected."); |
0d8b4d8e PP |
381 | bt_component_port_connected(downstream_component, downstream_port, |
382 | upstream_port); | |
1bf957a0 PP |
383 | |
384 | /* | |
0d8b4d8e | 385 | * Notify the graph's creator that both ports are connected. |
1bf957a0 | 386 | */ |
262e5473 | 387 | BT_LOGD_STR("Notifying graph's user that new component ports are connected."); |
f345f8bb | 388 | bt_graph_notify_ports_connected(graph, upstream_port, downstream_port); |
262e5473 PP |
389 | BT_LOGD("Connected component ports within graph: " |
390 | "graph-addr=%p, " | |
391 | "upstream-comp-addr=%p, upstream-comp-name=\"%s\", " | |
392 | "downstream-comp-addr=%p, downstream-comp-name=\"%s\", " | |
393 | "upstream-port-addr=%p, upstream-port-name=\"%s\", " | |
394 | "downstream-port-addr=%p, downstream-port-name=\"%s\"", | |
395 | graph, | |
396 | upstream_component, bt_component_get_name(upstream_component), | |
397 | downstream_component, bt_component_get_name(downstream_component), | |
398 | upstream_port, bt_port_get_name(upstream_port), | |
399 | downstream_port, bt_port_get_name(downstream_port)); | |
1bf957a0 | 400 | |
a256a42d | 401 | if (user_connection) { |
1a6a376a PP |
402 | /* Move reference to user */ |
403 | *user_connection = connection; | |
404 | connection = NULL; | |
a256a42d PP |
405 | } |
406 | ||
f60c8b34 JG |
407 | end: |
408 | bt_put(upstream_graph); | |
409 | bt_put(downstream_graph); | |
3eeacbb9 JG |
410 | bt_put(upstream_component); |
411 | bt_put(downstream_component); | |
a256a42d | 412 | bt_put(connection); |
9ef22b36 | 413 | graph->can_consume = init_can_consume; |
a256a42d | 414 | return status; |
f60c8b34 JG |
415 | } |
416 | ||
851b70bd PP |
417 | static |
418 | enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph) | |
c0418dd9 | 419 | { |
f60c8b34 | 420 | struct bt_component *sink; |
72b913fb PP |
421 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; |
422 | enum bt_component_status comp_status; | |
f60c8b34 JG |
423 | GList *current_node; |
424 | ||
851b70bd | 425 | BT_LOGV("Making next sink consume: addr=%p", graph); |
202a3a13 | 426 | |
aebb2750 PP |
427 | if (!graph->has_sink) { |
428 | BT_LOGW_STR("Graph has no sink component."); | |
429 | status = BT_GRAPH_STATUS_NO_SINK; | |
430 | goto end; | |
431 | } | |
432 | ||
f60c8b34 | 433 | if (g_queue_is_empty(graph->sinks_to_consume)) { |
262e5473 | 434 | BT_LOGV_STR("Graph's sink queue is empty: end of graph."); |
72b913fb | 435 | status = BT_GRAPH_STATUS_END; |
f60c8b34 JG |
436 | goto end; |
437 | } | |
438 | ||
439 | current_node = g_queue_pop_head_link(graph->sinks_to_consume); | |
440 | sink = current_node->data; | |
262e5473 PP |
441 | BT_LOGV("Chose next sink to consume: comp-addr=%p, comp-name=\"%s\"", |
442 | sink, bt_component_get_name(sink)); | |
72b913fb | 443 | comp_status = bt_component_sink_consume(sink); |
262e5473 PP |
444 | BT_LOGV("Consumed from sink: status=%s", |
445 | bt_component_status_string(comp_status)); | |
72b913fb PP |
446 | switch (comp_status) { |
447 | case BT_COMPONENT_STATUS_OK: | |
448 | break; | |
449 | case BT_COMPONENT_STATUS_END: | |
450 | status = BT_GRAPH_STATUS_END; | |
451 | break; | |
452 | case BT_COMPONENT_STATUS_AGAIN: | |
453 | status = BT_GRAPH_STATUS_AGAIN; | |
454 | break; | |
455 | case BT_COMPONENT_STATUS_INVALID: | |
456 | status = BT_GRAPH_STATUS_INVALID; | |
457 | break; | |
458 | default: | |
459 | status = BT_GRAPH_STATUS_ERROR; | |
460 | break; | |
461 | } | |
462 | ||
463 | if (status != BT_GRAPH_STATUS_END) { | |
f60c8b34 JG |
464 | g_queue_push_tail_link(graph->sinks_to_consume, current_node); |
465 | goto end; | |
466 | } | |
467 | ||
468 | /* End reached, the node is not added back to the queue and free'd. */ | |
469 | g_queue_delete_link(graph->sinks_to_consume, current_node); | |
470 | ||
471 | /* Don't forward an END status if there are sinks left to consume. */ | |
472 | if (!g_queue_is_empty(graph->sinks_to_consume)) { | |
473 | status = BT_GRAPH_STATUS_OK; | |
474 | goto end; | |
475 | } | |
476 | end: | |
262e5473 | 477 | BT_LOGV("Graph consumed: status=%s", bt_graph_status_string(status)); |
f60c8b34 | 478 | return status; |
c0418dd9 JG |
479 | } |
480 | ||
851b70bd PP |
481 | enum bt_graph_status bt_graph_consume(struct bt_graph *graph) |
482 | { | |
483 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; | |
484 | ||
485 | if (!graph) { | |
486 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
487 | status = BT_GRAPH_STATUS_INVALID; | |
488 | goto end; | |
489 | } | |
490 | ||
491 | if (graph->canceled) { | |
492 | BT_LOGW("Invalid parameter: graph is canceled: " | |
493 | "graph-addr=%p", graph); | |
494 | status = BT_GRAPH_STATUS_CANCELED; | |
495 | goto end; | |
496 | } | |
497 | ||
9ef22b36 PP |
498 | if (!graph->can_consume) { |
499 | BT_LOGW_STR("Cannot consume graph in its current state."); | |
500 | status = BT_GRAPH_STATUS_CANNOT_CONSUME; | |
501 | goto end; | |
502 | } | |
503 | ||
504 | graph->can_consume = BT_FALSE; | |
851b70bd | 505 | status = bt_graph_consume_no_check(graph); |
9ef22b36 | 506 | graph->can_consume = BT_TRUE; |
851b70bd PP |
507 | |
508 | end: | |
509 | return status; | |
510 | } | |
511 | ||
72b913fb | 512 | enum bt_graph_status bt_graph_run(struct bt_graph *graph) |
f60c8b34 | 513 | { |
72b913fb | 514 | enum bt_graph_status status = BT_GRAPH_STATUS_OK; |
f60c8b34 JG |
515 | |
516 | if (!graph) { | |
262e5473 | 517 | BT_LOGW_STR("Invalid parameter: graph is NULL."); |
72b913fb | 518 | status = BT_GRAPH_STATUS_INVALID; |
202a3a13 | 519 | goto end; |
f60c8b34 JG |
520 | } |
521 | ||
851b70bd PP |
522 | if (graph->canceled) { |
523 | BT_LOGW("Invalid parameter: graph is canceled: " | |
524 | "graph-addr=%p", graph); | |
525 | status = BT_GRAPH_STATUS_CANCELED; | |
526 | goto end; | |
527 | } | |
528 | ||
9ef22b36 PP |
529 | if (!graph->can_consume) { |
530 | BT_LOGW_STR("Cannot run graph in its current state."); | |
531 | status = BT_GRAPH_STATUS_CANNOT_CONSUME; | |
532 | goto end; | |
533 | } | |
534 | ||
535 | graph->can_consume = BT_FALSE; | |
262e5473 PP |
536 | BT_LOGV("Running graph: addr=%p", graph); |
537 | ||
f60c8b34 | 538 | do { |
851b70bd PP |
539 | /* |
540 | * Check if the graph is canceled at each iteration. If | |
541 | * the graph was canceled by another thread or by a | |
542 | * signal, this is not a warning nor an error, it was | |
543 | * intentional: log with a DEBUG level only. | |
544 | */ | |
545 | if (graph->canceled) { | |
546 | BT_LOGD("Stopping the graph: graph is canceled: " | |
547 | "graph-addr=%p", graph); | |
548 | status = BT_GRAPH_STATUS_CANCELED; | |
549 | goto end; | |
550 | } | |
551 | ||
7deebb2f | 552 | status = bt_graph_consume_no_check(graph); |
72b913fb | 553 | if (status == BT_GRAPH_STATUS_AGAIN) { |
f60c8b34 | 554 | /* |
202a3a13 PP |
555 | * If AGAIN is received and there are multiple |
556 | * sinks, go ahead and consume from the next | |
557 | * sink. | |
f60c8b34 | 558 | * |
202a3a13 PP |
559 | * However, in the case where a single sink is |
560 | * left, the caller can decide to busy-wait and | |
561 | * call bt_graph_run() continuously until the | |
562 | * source is ready or it can decide to sleep for | |
563 | * an arbitrary amount of time. | |
f60c8b34 JG |
564 | */ |
565 | if (graph->sinks_to_consume->length > 1) { | |
72b913fb | 566 | status = BT_GRAPH_STATUS_OK; |
f60c8b34 | 567 | } |
aebb2750 PP |
568 | } else if (status == BT_GRAPH_STATUS_NO_SINK) { |
569 | goto end; | |
f60c8b34 | 570 | } |
72b913fb | 571 | } while (status == BT_GRAPH_STATUS_OK); |
f60c8b34 JG |
572 | |
573 | if (g_queue_is_empty(graph->sinks_to_consume)) { | |
72b913fb | 574 | status = BT_GRAPH_STATUS_END; |
f60c8b34 | 575 | } |
262e5473 | 576 | |
202a3a13 | 577 | end: |
262e5473 | 578 | BT_LOGV("Graph ran: status=%s", bt_graph_status_string(status)); |
9ef22b36 | 579 | graph->can_consume = BT_TRUE; |
72b913fb | 580 | return status; |
f60c8b34 | 581 | } |
1bf957a0 PP |
582 | |
583 | static | |
eb87cce7 | 584 | int add_listener(GArray *listeners, void *func, void *removed, void *data) |
1bf957a0 PP |
585 | { |
586 | struct bt_graph_listener listener = { | |
587 | .func = func, | |
eb87cce7 | 588 | .removed = removed, |
1bf957a0 PP |
589 | .data = data, |
590 | }; | |
591 | ||
592 | g_array_append_val(listeners, listener); | |
0d107cdd | 593 | return listeners->len - 1; |
1bf957a0 PP |
594 | } |
595 | ||
0d107cdd | 596 | int bt_graph_add_port_added_listener( |
1bf957a0 | 597 | struct bt_graph *graph, |
eb87cce7 PP |
598 | bt_graph_port_added_listener listener, |
599 | bt_graph_listener_removed listener_removed, void *data) | |
1bf957a0 | 600 | { |
0d107cdd | 601 | int ret; |
1bf957a0 | 602 | |
262e5473 PP |
603 | if (!graph) { |
604 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
0d107cdd | 605 | ret = -1; |
262e5473 PP |
606 | goto end; |
607 | } | |
608 | ||
eb87cce7 PP |
609 | if (graph->in_remove_listener) { |
610 | BT_LOGW("Cannot call this function during the execution of a remove listener: " | |
611 | "addr=%p", graph); | |
612 | ret = -1; | |
613 | goto end; | |
614 | } | |
615 | ||
262e5473 PP |
616 | if (!listener) { |
617 | BT_LOGW_STR("Invalid parameter: listener is NULL."); | |
0d107cdd | 618 | ret = -1; |
1bf957a0 PP |
619 | goto end; |
620 | } | |
621 | ||
eb87cce7 PP |
622 | ret = add_listener(graph->listeners.port_added, listener, |
623 | listener_removed, data); | |
262e5473 | 624 | BT_LOGV("Added \"port added\" listener to graph: " |
0d107cdd PP |
625 | "graph-addr=%p, listener-addr=%p, pos=%d", |
626 | graph, listener, ret); | |
1bf957a0 PP |
627 | |
628 | end: | |
0d107cdd | 629 | return ret; |
1bf957a0 PP |
630 | } |
631 | ||
0d107cdd | 632 | int bt_graph_add_port_removed_listener( |
1bf957a0 | 633 | struct bt_graph *graph, |
eb87cce7 PP |
634 | bt_graph_port_removed_listener listener, |
635 | bt_graph_listener_removed listener_removed, void *data) | |
1bf957a0 | 636 | { |
0d107cdd | 637 | int ret; |
1bf957a0 | 638 | |
262e5473 PP |
639 | if (!graph) { |
640 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
0d107cdd | 641 | ret = -1; |
262e5473 PP |
642 | goto end; |
643 | } | |
644 | ||
eb87cce7 PP |
645 | if (graph->in_remove_listener) { |
646 | BT_LOGW("Cannot call this function during the execution of a remove listener: " | |
647 | "addr=%p", graph); | |
648 | ret = -1; | |
649 | goto end; | |
650 | } | |
651 | ||
262e5473 PP |
652 | if (!listener) { |
653 | BT_LOGW_STR("Invalid parameter: listener is NULL."); | |
0d107cdd | 654 | ret = -1; |
1bf957a0 PP |
655 | goto end; |
656 | } | |
657 | ||
eb87cce7 PP |
658 | ret = add_listener(graph->listeners.port_removed, listener, |
659 | listener_removed, data); | |
262e5473 | 660 | BT_LOGV("Added \"port removed\" listener to graph: " |
0d107cdd PP |
661 | "graph-addr=%p, listener-addr=%p, pos=%d", |
662 | graph, listener, ret); | |
1bf957a0 PP |
663 | |
664 | end: | |
0d107cdd | 665 | return ret; |
1bf957a0 PP |
666 | } |
667 | ||
0d107cdd | 668 | int bt_graph_add_ports_connected_listener( |
1bf957a0 | 669 | struct bt_graph *graph, |
eb87cce7 PP |
670 | bt_graph_ports_connected_listener listener, |
671 | bt_graph_listener_removed listener_removed, void *data) | |
1bf957a0 | 672 | { |
0d107cdd | 673 | int ret; |
1bf957a0 | 674 | |
262e5473 PP |
675 | if (!graph) { |
676 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
0d107cdd | 677 | ret = -1; |
262e5473 PP |
678 | goto end; |
679 | } | |
680 | ||
eb87cce7 PP |
681 | if (graph->in_remove_listener) { |
682 | BT_LOGW("Cannot call this function during the execution of a remove listener: " | |
683 | "addr=%p", graph); | |
684 | ret = -1; | |
685 | goto end; | |
686 | } | |
687 | ||
262e5473 PP |
688 | if (!listener) { |
689 | BT_LOGW_STR("Invalid parameter: listener is NULL."); | |
0d107cdd | 690 | ret = -1; |
1bf957a0 PP |
691 | goto end; |
692 | } | |
693 | ||
eb87cce7 PP |
694 | ret = add_listener(graph->listeners.ports_connected, listener, |
695 | listener_removed, data); | |
262e5473 | 696 | BT_LOGV("Added \"port connected\" listener to graph: " |
0d107cdd PP |
697 | "graph-addr=%p, listener-addr=%p, pos=%d", |
698 | graph, listener, ret); | |
1bf957a0 PP |
699 | |
700 | end: | |
0d107cdd | 701 | return ret; |
1bf957a0 PP |
702 | } |
703 | ||
0d107cdd | 704 | int bt_graph_add_ports_disconnected_listener( |
1bf957a0 | 705 | struct bt_graph *graph, |
eb87cce7 PP |
706 | bt_graph_ports_disconnected_listener listener, |
707 | bt_graph_listener_removed listener_removed, void *data) | |
1bf957a0 | 708 | { |
0d107cdd | 709 | int ret; |
1bf957a0 | 710 | |
262e5473 PP |
711 | if (!graph) { |
712 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
0d107cdd | 713 | ret = -1; |
262e5473 PP |
714 | goto end; |
715 | } | |
716 | ||
eb87cce7 PP |
717 | if (graph->in_remove_listener) { |
718 | BT_LOGW("Cannot call this function during the execution of a remove listener: " | |
719 | "addr=%p", graph); | |
720 | ret = -1; | |
721 | goto end; | |
722 | } | |
723 | ||
262e5473 PP |
724 | if (!listener) { |
725 | BT_LOGW_STR("Invalid parameter: listener is NULL."); | |
0d107cdd | 726 | ret = -1; |
1bf957a0 PP |
727 | goto end; |
728 | } | |
729 | ||
eb87cce7 PP |
730 | ret = add_listener(graph->listeners.ports_disconnected, listener, |
731 | listener_removed, data); | |
262e5473 | 732 | BT_LOGV("Added \"port disconnected\" listener to graph: " |
0d107cdd PP |
733 | "graph-addr=%p, listener-addr=%p, pos=%d", |
734 | graph, listener, ret); | |
1bf957a0 PP |
735 | |
736 | end: | |
0d107cdd | 737 | return ret; |
1bf957a0 PP |
738 | } |
739 | ||
740 | BT_HIDDEN | |
741 | void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port) | |
742 | { | |
743 | size_t i; | |
744 | ||
262e5473 PP |
745 | BT_LOGV("Notifying graph listeners that a port was added: " |
746 | "graph-addr=%p, port-addr=%p, port-name=\"%s\"", | |
747 | graph, port, bt_port_get_name(port)); | |
748 | ||
1bf957a0 PP |
749 | for (i = 0; i < graph->listeners.port_added->len; i++) { |
750 | struct bt_graph_listener listener = | |
751 | g_array_index(graph->listeners.port_added, | |
752 | struct bt_graph_listener, i); | |
753 | bt_graph_port_added_listener func = listener.func; | |
754 | ||
755 | assert(func); | |
756 | func(port, listener.data); | |
757 | } | |
758 | } | |
759 | ||
760 | BT_HIDDEN | |
761 | void bt_graph_notify_port_removed(struct bt_graph *graph, | |
762 | struct bt_component *comp, struct bt_port *port) | |
763 | { | |
764 | size_t i; | |
765 | ||
262e5473 PP |
766 | BT_LOGV("Notifying graph listeners that a port was removed: " |
767 | "graph-addr=%p, port-addr=%p, port-name=\"%s\"", | |
768 | graph, port, bt_port_get_name(port)); | |
769 | ||
1bf957a0 PP |
770 | for (i = 0; i < graph->listeners.port_removed->len; i++) { |
771 | struct bt_graph_listener listener = | |
772 | g_array_index(graph->listeners.port_removed, | |
773 | struct bt_graph_listener, i); | |
774 | bt_graph_port_removed_listener func = listener.func; | |
775 | ||
776 | assert(func); | |
777 | func(comp, port, listener.data); | |
778 | } | |
779 | } | |
780 | ||
781 | BT_HIDDEN | |
f345f8bb PP |
782 | void bt_graph_notify_ports_connected(struct bt_graph *graph, |
783 | struct bt_port *upstream_port, struct bt_port *downstream_port) | |
1bf957a0 PP |
784 | { |
785 | size_t i; | |
786 | ||
262e5473 PP |
787 | BT_LOGV("Notifying graph listeners that two ports were connected: " |
788 | "graph-addr=%p, " | |
789 | "upstream-port-addr=%p, upstream-port-name=\"%s\", " | |
790 | "downstream-port-addr=%p, downstream-port-name=\"%s\"", | |
791 | graph, upstream_port, bt_port_get_name(upstream_port), | |
792 | downstream_port, bt_port_get_name(downstream_port)); | |
793 | ||
f345f8bb | 794 | for (i = 0; i < graph->listeners.ports_connected->len; i++) { |
1bf957a0 | 795 | struct bt_graph_listener listener = |
f345f8bb | 796 | g_array_index(graph->listeners.ports_connected, |
1bf957a0 | 797 | struct bt_graph_listener, i); |
f345f8bb | 798 | bt_graph_ports_connected_listener func = listener.func; |
1bf957a0 PP |
799 | |
800 | assert(func); | |
f345f8bb | 801 | func(upstream_port, downstream_port, listener.data); |
1bf957a0 PP |
802 | } |
803 | } | |
804 | ||
805 | BT_HIDDEN | |
f345f8bb PP |
806 | void bt_graph_notify_ports_disconnected(struct bt_graph *graph, |
807 | struct bt_component *upstream_comp, | |
808 | struct bt_component *downstream_comp, | |
809 | struct bt_port *upstream_port, struct bt_port *downstream_port) | |
1bf957a0 PP |
810 | { |
811 | size_t i; | |
812 | ||
262e5473 PP |
813 | BT_LOGV("Notifying graph listeners that two ports were disconnected: " |
814 | "graph-addr=%p, " | |
815 | "upstream-port-addr=%p, upstream-port-name=\"%s\", " | |
816 | "downstream-port-addr=%p, downstream-port-name=\"%s\"", | |
817 | graph, upstream_port, bt_port_get_name(upstream_port), | |
818 | downstream_port, bt_port_get_name(downstream_port)); | |
819 | ||
f345f8bb | 820 | for (i = 0; i < graph->listeners.ports_disconnected->len; i++) { |
1bf957a0 | 821 | struct bt_graph_listener listener = |
f345f8bb | 822 | g_array_index(graph->listeners.ports_disconnected, |
1bf957a0 | 823 | struct bt_graph_listener, i); |
f345f8bb | 824 | bt_graph_ports_disconnected_listener func = listener.func; |
1bf957a0 PP |
825 | |
826 | assert(func); | |
f345f8bb PP |
827 | func(upstream_comp, downstream_comp, upstream_port, |
828 | downstream_port, listener.data); | |
1bf957a0 PP |
829 | } |
830 | } | |
202a3a13 | 831 | |
1286dcbb | 832 | enum bt_graph_status bt_graph_cancel(struct bt_graph *graph) |
202a3a13 PP |
833 | { |
834 | enum bt_graph_status ret = BT_GRAPH_STATUS_OK; | |
835 | ||
836 | if (!graph) { | |
262e5473 | 837 | BT_LOGW_STR("Invalid parameter: graph is NULL."); |
202a3a13 PP |
838 | ret = BT_GRAPH_STATUS_INVALID; |
839 | goto end; | |
840 | } | |
841 | ||
842 | graph->canceled = BT_TRUE; | |
262e5473 | 843 | BT_LOGV("Canceled graph: addr=%p", graph); |
202a3a13 PP |
844 | |
845 | end: | |
846 | return ret; | |
847 | } | |
848 | ||
1286dcbb | 849 | bt_bool bt_graph_is_canceled(struct bt_graph *graph) |
202a3a13 | 850 | { |
1286dcbb PP |
851 | bt_bool canceled = BT_FALSE; |
852 | ||
853 | if (!graph) { | |
854 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
855 | goto end; | |
856 | } | |
857 | ||
858 | canceled = graph->canceled; | |
859 | ||
860 | end: | |
861 | return canceled; | |
202a3a13 | 862 | } |
f167d3c0 PP |
863 | |
864 | BT_HIDDEN | |
865 | void bt_graph_remove_connection(struct bt_graph *graph, | |
866 | struct bt_connection *connection) | |
867 | { | |
868 | assert(graph); | |
869 | assert(connection); | |
262e5473 PP |
870 | BT_LOGV("Removing graph's connection: graph-addr=%p, conn-addr=%p", |
871 | graph, connection); | |
f167d3c0 PP |
872 | g_ptr_array_remove(graph->connections, connection); |
873 | } | |
36712f1d PP |
874 | |
875 | enum bt_graph_status bt_graph_add_component_with_init_method_data( | |
876 | struct bt_graph *graph, | |
877 | struct bt_component_class *component_class, | |
878 | const char *name, struct bt_value *params, | |
879 | void *init_method_data, | |
880 | struct bt_component **user_component) | |
881 | { | |
882 | enum bt_graph_status graph_status = BT_GRAPH_STATUS_OK; | |
883 | enum bt_component_status comp_status; | |
884 | struct bt_component *component = NULL; | |
885 | enum bt_component_class_type type; | |
886 | size_t i; | |
9ef22b36 | 887 | const bt_bool init_can_consume = graph->can_consume; |
36712f1d PP |
888 | |
889 | bt_get(params); | |
890 | ||
891 | if (!graph) { | |
892 | BT_LOGW_STR("Invalid parameter: graph is NULL."); | |
893 | graph_status = BT_GRAPH_STATUS_INVALID; | |
894 | goto end; | |
895 | } | |
896 | ||
897 | if (!component_class) { | |
898 | BT_LOGW_STR("Invalid parameter: component class is NULL."); | |
899 | graph_status = BT_GRAPH_STATUS_INVALID; | |
900 | goto end; | |
901 | } | |
902 | ||
9ef22b36 | 903 | graph->can_consume = BT_FALSE; |
36712f1d PP |
904 | type = bt_component_class_get_type(component_class); |
905 | BT_LOGD("Adding component to graph: " | |
906 | "graph-addr=%p, comp-cls-addr=%p, " | |
907 | "comp-cls-type=%s, name=\"%s\", params-addr=%p, " | |
908 | "init-method-data-addr=%p", | |
909 | graph, component_class, bt_component_class_type_string(type), | |
910 | name, params, init_method_data); | |
911 | ||
912 | if (!name) { | |
913 | BT_LOGW_STR("Invalid parameter: name is NULL."); | |
914 | graph_status = BT_GRAPH_STATUS_INVALID; | |
915 | goto end; | |
916 | } | |
917 | ||
918 | if (graph->canceled) { | |
919 | BT_LOGW_STR("Invalid parameter: graph is canceled."); | |
920 | graph_status = BT_GRAPH_STATUS_CANCELED; | |
921 | goto end; | |
922 | } | |
923 | ||
924 | if (type != BT_COMPONENT_CLASS_TYPE_SOURCE && | |
925 | type != BT_COMPONENT_CLASS_TYPE_FILTER && | |
926 | type != BT_COMPONENT_CLASS_TYPE_SINK) { | |
927 | BT_LOGW("Invalid parameter: unknown component class type: " | |
928 | "type=%d", type); | |
929 | graph_status = BT_GRAPH_STATUS_INVALID; | |
930 | goto end; | |
931 | } | |
932 | ||
933 | for (i = 0; i < graph->components->len; i++) { | |
934 | void *other_comp = graph->components->pdata[i]; | |
935 | ||
936 | if (strcmp(name, bt_component_get_name(other_comp)) == 0) { | |
937 | BT_LOGW("Invalid parameter: another component with the same name already exists in the graph: " | |
938 | "other-comp-addr=%p, name=\"%s\"", | |
939 | other_comp, name); | |
940 | graph_status = BT_GRAPH_STATUS_INVALID; | |
941 | goto end; | |
942 | } | |
943 | } | |
944 | ||
945 | /* | |
946 | * Parameters must be a map value, but we create a convenient | |
947 | * empty one if it's NULL. | |
948 | */ | |
949 | if (params) { | |
950 | if (!bt_value_is_map(params)) { | |
951 | BT_LOGW("Invalid parameter: initialization parameters must be a map value: " | |
952 | "type=%s", | |
953 | bt_value_type_string(bt_value_get_type(params))); | |
954 | graph_status = BT_GRAPH_STATUS_INVALID; | |
955 | goto end; | |
956 | } | |
957 | } else { | |
958 | params = bt_value_map_create(); | |
959 | if (!params) { | |
960 | BT_LOGE_STR("Cannot create map value object."); | |
961 | graph_status = BT_GRAPH_STATUS_NOMEM; | |
962 | goto end; | |
963 | } | |
964 | } | |
965 | ||
966 | comp_status = bt_component_create(component_class, name, &component); | |
967 | if (comp_status != BT_COMPONENT_STATUS_OK) { | |
968 | BT_LOGE("Cannot create empty component object: status=%s", | |
969 | bt_component_status_string(comp_status)); | |
970 | graph_status = bt_graph_status_from_component_status( | |
971 | comp_status); | |
972 | goto end; | |
973 | } | |
974 | ||
975 | /* | |
976 | * The user's initialization method needs to see that this | |
977 | * component is part of the graph. If the user method fails, we | |
978 | * immediately remove the component from the graph's components. | |
979 | */ | |
980 | g_ptr_array_add(graph->components, component); | |
981 | bt_component_set_graph(component, graph); | |
982 | ||
983 | if (component_class->methods.init) { | |
984 | BT_LOGD_STR("Calling user's initialization method."); | |
985 | comp_status = component_class->methods.init( | |
986 | bt_private_component_from_component(component), params, | |
987 | init_method_data); | |
988 | BT_LOGD("User method returned: status=%s", | |
989 | bt_component_status_string(comp_status)); | |
990 | if (comp_status != BT_COMPONENT_STATUS_OK) { | |
991 | BT_LOGW_STR("Initialization method failed."); | |
992 | graph_status = bt_graph_status_from_component_status( | |
993 | comp_status); | |
994 | bt_component_set_graph(component, NULL); | |
995 | g_ptr_array_remove_fast(graph->components, component); | |
996 | goto end; | |
997 | } | |
998 | } | |
999 | ||
1000 | /* | |
1001 | * Mark the component as initialized so that its finalization | |
1002 | * method is called when it is destroyed. | |
1003 | */ | |
1004 | component->initialized = true; | |
1005 | ||
1006 | /* | |
1007 | * If it's a sink component, it needs to be part of the graph's | |
1008 | * sink queue to be consumed by bt_graph_consume(). | |
1009 | */ | |
1010 | if (bt_component_is_sink(component)) { | |
aebb2750 | 1011 | graph->has_sink = BT_TRUE; |
36712f1d PP |
1012 | g_queue_push_tail(graph->sinks_to_consume, component); |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * Freeze the component class now that it's instantiated at | |
1017 | * least once. | |
1018 | */ | |
1019 | BT_LOGD_STR("Freezing component class."); | |
1020 | bt_component_class_freeze(component->class); | |
1021 | BT_LOGD("Added component to graph: " | |
1022 | "graph-addr=%p, comp-cls-addr=%p, " | |
1023 | "comp-cls-type=%s, name=\"%s\", params-addr=%p, " | |
1024 | "init-method-data-addr=%p, comp-addr=%p", | |
1025 | graph, component_class, bt_component_class_type_string(type), | |
1026 | name, params, init_method_data, component); | |
1027 | ||
1028 | if (user_component) { | |
1029 | /* Move reference to user */ | |
1030 | *user_component = component; | |
1031 | component = NULL; | |
1032 | } | |
1033 | ||
1034 | end: | |
1035 | bt_put(component); | |
1036 | bt_put(params); | |
9ef22b36 | 1037 | graph->can_consume = init_can_consume; |
36712f1d PP |
1038 | return graph_status; |
1039 | } | |
1040 | ||
1041 | enum bt_graph_status bt_graph_add_component( | |
1042 | struct bt_graph *graph, | |
1043 | struct bt_component_class *component_class, | |
1044 | const char *name, struct bt_value *params, | |
1045 | struct bt_component **component) | |
1046 | { | |
1047 | return bt_graph_add_component_with_init_method_data(graph, | |
1048 | component_class, name, params, NULL, component); | |
1049 | } |