81f7dd9d37a18451dfdcc0838048ec4b5e2ee5c6
[babeltrace.git] / src / lib / graph / iterator.c
1 /*
2 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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
24 #define BT_LOG_TAG "LIB/MSG-ITER"
25 #include "lib/logging.h"
26
27 #include "compat/compiler.h"
28 #include "compat/glib.h"
29 #include "lib/trace-ir/clock-class.h"
30 #include "lib/trace-ir/clock-snapshot.h"
31 #include <babeltrace2/trace-ir/field.h>
32 #include <babeltrace2/trace-ir/event-const.h>
33 #include "lib/trace-ir/event.h"
34 #include <babeltrace2/trace-ir/packet-const.h>
35 #include "lib/trace-ir/packet.h"
36 #include "lib/trace-ir/stream.h"
37 #include <babeltrace2/trace-ir/clock-class-const.h>
38 #include <babeltrace2/trace-ir/stream-class-const.h>
39 #include <babeltrace2/trace-ir/stream-const.h>
40 #include <babeltrace2/graph/connection-const.h>
41 #include <babeltrace2/graph/component-const.h>
42 #include <babeltrace2/graph/component-sink-const.h>
43 #include <babeltrace2/graph/message-const.h>
44 #include <babeltrace2/graph/message-iterator.h>
45 #include <babeltrace2/graph/self-component-port-input-message-iterator.h>
46 #include <babeltrace2/graph/message-event-const.h>
47 #include <babeltrace2/graph/message-message-iterator-inactivity-const.h>
48 #include <babeltrace2/graph/message-packet-beginning.h>
49 #include <babeltrace2/graph/message-packet-beginning-const.h>
50 #include <babeltrace2/graph/message-packet-end-const.h>
51 #include <babeltrace2/graph/message-stream-beginning.h>
52 #include <babeltrace2/graph/message-stream-beginning-const.h>
53 #include <babeltrace2/graph/message-stream-end-const.h>
54 #include <babeltrace2/graph/port-const.h>
55 #include <babeltrace2/graph/graph.h>
56 #include <babeltrace2/graph/graph-const.h>
57 #include <babeltrace2/types.h>
58 #include "common/assert.h"
59 #include "lib/assert-pre.h"
60 #include "lib/assert-post.h"
61 #include <stdint.h>
62 #include <inttypes.h>
63 #include <stdlib.h>
64
65 #include "component-class.h"
66 #include "component.h"
67 #include "component-sink.h"
68 #include "component-source.h"
69 #include "connection.h"
70 #include "graph.h"
71 #include "message/discarded-items.h"
72 #include "message/event.h"
73 #include "message/iterator.h"
74 #include "message/message.h"
75 #include "message/message-iterator-inactivity.h"
76 #include "message/stream.h"
77 #include "message/packet.h"
78 #include "lib/func-status.h"
79
80 /*
81 * TODO: Use graph's state (number of active iterators, etc.) and
82 * possibly system specifications to make a better guess than this.
83 */
84 #define MSG_BATCH_SIZE 15
85
86 #define BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(_iter) \
87 BT_ASSERT_PRE((_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE || \
88 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED || \
89 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN || \
90 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR, \
91 "Message iterator is in the wrong state: %!+i", _iter)
92
93 static inline
94 void set_self_comp_port_input_msg_iterator_state(
95 struct bt_self_component_port_input_message_iterator *iterator,
96 enum bt_self_component_port_input_message_iterator_state state)
97 {
98 BT_ASSERT(iterator);
99 BT_LIB_LOGD("Updating message iterator's state: new-state=%s",
100 bt_self_component_port_input_message_iterator_state_string(state));
101 iterator->state = state;
102 }
103
104 static
105 void bt_self_component_port_input_message_iterator_destroy(struct bt_object *obj)
106 {
107 struct bt_self_component_port_input_message_iterator *iterator;
108
109 BT_ASSERT(obj);
110
111 /*
112 * The message iterator's reference count is 0 if we're
113 * here. Increment it to avoid a double-destroy (possibly
114 * infinitely recursive). This could happen for example if the
115 * message iterator's finalization function does
116 * bt_object_get_ref() (or anything that causes
117 * bt_object_get_ref() to be called) on itself (ref. count goes
118 * from 0 to 1), and then bt_object_put_ref(): the reference
119 * count would go from 1 to 0 again and this function would be
120 * called again.
121 */
122 obj->ref_count++;
123 iterator = (void *) obj;
124 BT_LIB_LOGI("Destroying self component input port message iterator object: "
125 "%!+i", iterator);
126 bt_self_component_port_input_message_iterator_try_finalize(iterator);
127
128 if (iterator->connection) {
129 /*
130 * Remove ourself from the originating connection so
131 * that it does not try to finalize a dangling pointer
132 * later.
133 */
134 bt_connection_remove_iterator(iterator->connection, iterator);
135 iterator->connection = NULL;
136 }
137
138 if (iterator->auto_seek.msgs) {
139 while (!g_queue_is_empty(iterator->auto_seek.msgs)) {
140 bt_object_put_no_null_check(
141 g_queue_pop_tail(iterator->auto_seek.msgs));
142 }
143
144 g_queue_free(iterator->auto_seek.msgs);
145 iterator->auto_seek.msgs = NULL;
146 }
147
148 if (iterator->upstream_msg_iters) {
149 /*
150 * At this point the message iterator is finalized, so
151 * it's detached from any upstream message iterator.
152 */
153 BT_ASSERT(iterator->upstream_msg_iters->len == 0);
154 g_ptr_array_free(iterator->upstream_msg_iters, TRUE);
155 iterator->upstream_msg_iters = NULL;
156 }
157
158 if (iterator->msgs) {
159 g_ptr_array_free(iterator->msgs, TRUE);
160 iterator->msgs = NULL;
161 }
162
163 g_free(iterator);
164 }
165
166 BT_HIDDEN
167 void bt_self_component_port_input_message_iterator_try_finalize(
168 struct bt_self_component_port_input_message_iterator *iterator)
169 {
170 uint64_t i;
171 typedef void (*method_t)(void *);
172
173 struct bt_component_class *comp_class = NULL;
174 method_t method = NULL;
175
176 BT_ASSERT(iterator);
177
178 switch (iterator->state) {
179 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED:
180 /* Skip user finalization if user initialization failed */
181 BT_LIB_LOGD("Not finalizing non-initialized message iterator: "
182 "%!+i", iterator);
183 goto end;
184 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED:
185 /* Already finalized */
186 BT_LIB_LOGD("Not finalizing message iterator: already finalized: "
187 "%!+i", iterator);
188 goto end;
189 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING:
190 /* Finalizing */
191 BT_LIB_LOGF("Message iterator is already being finalized: "
192 "%!+i", iterator);
193 abort();
194 default:
195 break;
196 }
197
198 BT_LIB_LOGD("Finalizing message iterator: %!+i", iterator);
199 set_self_comp_port_input_msg_iterator_state(iterator,
200 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING);
201 BT_ASSERT(iterator->upstream_component);
202 comp_class = iterator->upstream_component->class;
203
204 /* Call user-defined destroy method */
205 switch (comp_class->type) {
206 case BT_COMPONENT_CLASS_TYPE_SOURCE:
207 {
208 struct bt_component_class_source *src_comp_cls =
209 (void *) comp_class;
210
211 method = (method_t) src_comp_cls->methods.msg_iter_finalize;
212 break;
213 }
214 case BT_COMPONENT_CLASS_TYPE_FILTER:
215 {
216 struct bt_component_class_filter *flt_comp_cls =
217 (void *) comp_class;
218
219 method = (method_t) flt_comp_cls->methods.msg_iter_finalize;
220 break;
221 }
222 default:
223 /* Unreachable */
224 abort();
225 }
226
227 if (method) {
228 BT_LIB_LOGD("Calling user's finalization method: %!+i",
229 iterator);
230 method(iterator);
231 }
232
233 /* Detach upstream message iterators */
234 for (i = 0; i < iterator->upstream_msg_iters->len; i++) {
235 struct bt_self_component_port_input_message_iterator *upstream_msg_iter =
236 iterator->upstream_msg_iters->pdata[i];
237
238 upstream_msg_iter->downstream_msg_iter = NULL;
239 }
240
241 g_ptr_array_set_size(iterator->upstream_msg_iters, 0);
242
243 /* Detach downstream message iterator */
244 if (iterator->downstream_msg_iter) {
245 gboolean existed;
246
247 BT_ASSERT(iterator->downstream_msg_iter->upstream_msg_iters);
248 existed = g_ptr_array_remove_fast(
249 iterator->downstream_msg_iter->upstream_msg_iters,
250 iterator);
251 BT_ASSERT(existed);
252 }
253
254 iterator->upstream_component = NULL;
255 iterator->upstream_port = NULL;
256 set_self_comp_port_input_msg_iterator_state(iterator,
257 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED);
258 BT_LIB_LOGD("Finalized message iterator: %!+i", iterator);
259
260 end:
261 return;
262 }
263
264 BT_HIDDEN
265 void bt_self_component_port_input_message_iterator_set_connection(
266 struct bt_self_component_port_input_message_iterator *iterator,
267 struct bt_connection *connection)
268 {
269 BT_ASSERT(iterator);
270 iterator->connection = connection;
271 BT_LIB_LOGI("Set message iterator's connection: "
272 "%![iter-]+i, %![conn-]+x", iterator, connection);
273 }
274
275 static
276 bt_bool can_seek_ns_from_origin_true(
277 struct bt_self_component_port_input_message_iterator *iterator,
278 int64_t ns_from_origin)
279 {
280 return BT_TRUE;
281 }
282
283 static
284 bt_bool can_seek_beginning_true(
285 struct bt_self_component_port_input_message_iterator *iterator)
286 {
287 return BT_TRUE;
288 }
289
290 static
291 int create_self_component_input_port_message_iterator(
292 struct bt_self_message_iterator *self_downstream_msg_iter,
293 struct bt_self_component_port_input *self_port,
294 struct bt_self_component_port_input_message_iterator **message_iterator)
295 {
296 typedef enum bt_component_class_message_iterator_init_method_status (*init_method_t)(
297 void *, void *, void *);
298
299 init_method_t init_method = NULL;
300 struct bt_self_component_port_input_message_iterator *iterator =
301 NULL;
302 struct bt_self_component_port_input_message_iterator *downstream_msg_iter =
303 (void *) self_downstream_msg_iter;
304 struct bt_port *port = (void *) self_port;
305 struct bt_port *upstream_port;
306 struct bt_component *comp;
307 struct bt_component *upstream_comp;
308 struct bt_component_class *upstream_comp_cls;
309 int status;
310
311 BT_ASSERT_PRE_NON_NULL(message_iterator, "Created message iterator");
312 BT_ASSERT_PRE_NON_NULL(port, "Input port");
313 comp = bt_port_borrow_component_inline(port);
314 BT_ASSERT_PRE(bt_port_is_connected(port),
315 "Input port is not connected: %![port-]+p", port);
316 BT_ASSERT_PRE(comp, "Input port is not part of a component: %![port-]+p",
317 port);
318 BT_ASSERT(port->connection);
319 upstream_port = port->connection->upstream_port;
320 BT_ASSERT(upstream_port);
321 upstream_comp = bt_port_borrow_component_inline(upstream_port);
322 BT_ASSERT(upstream_comp);
323 BT_ASSERT_PRE(
324 bt_component_borrow_graph(upstream_comp)->config_state ==
325 BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED ||
326 bt_component_borrow_graph(upstream_comp)->config_state ==
327 BT_GRAPH_CONFIGURATION_STATE_CONFIGURED,
328 "Graph is not configured: %!+g",
329 bt_component_borrow_graph(upstream_comp));
330 upstream_comp_cls = upstream_comp->class;
331 BT_ASSERT(upstream_comp->class->type ==
332 BT_COMPONENT_CLASS_TYPE_SOURCE ||
333 upstream_comp->class->type ==
334 BT_COMPONENT_CLASS_TYPE_FILTER);
335 BT_LIB_LOGI("Creating message iterator on self component input port: "
336 "%![up-comp-]+c, %![up-port-]+p", upstream_comp, upstream_port);
337 iterator = g_new0(
338 struct bt_self_component_port_input_message_iterator, 1);
339 if (!iterator) {
340 BT_LIB_LOGE_APPEND_CAUSE(
341 "Failed to allocate one self component input port "
342 "message iterator.");
343 status = BT_FUNC_STATUS_MEMORY_ERROR;
344 goto error;
345 }
346
347 bt_object_init_shared(&iterator->base,
348 bt_self_component_port_input_message_iterator_destroy);
349 iterator->msgs = g_ptr_array_new();
350 if (!iterator->msgs) {
351 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GPtrArray.");
352 status = BT_FUNC_STATUS_MEMORY_ERROR;
353 goto error;
354 }
355
356 g_ptr_array_set_size(iterator->msgs, MSG_BATCH_SIZE);
357 iterator->last_ns_from_origin = INT64_MIN;
358 iterator->auto_seek.msgs = g_queue_new();
359 if (!iterator->auto_seek.msgs) {
360 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GQueue.");
361 status = BT_FUNC_STATUS_MEMORY_ERROR;
362 goto error;
363 }
364
365 iterator->upstream_msg_iters = g_ptr_array_new();
366 if (!iterator->upstream_msg_iters) {
367 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GPtrArray.");
368 status = BT_FUNC_STATUS_MEMORY_ERROR;
369 goto error;
370 }
371
372 iterator->upstream_component = upstream_comp;
373 iterator->upstream_port = upstream_port;
374 iterator->connection = iterator->upstream_port->connection;
375 iterator->graph = bt_component_borrow_graph(upstream_comp);
376 set_self_comp_port_input_msg_iterator_state(iterator,
377 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED);
378
379 switch (iterator->upstream_component->class->type) {
380 case BT_COMPONENT_CLASS_TYPE_SOURCE:
381 {
382 struct bt_component_class_source *src_comp_cls =
383 (void *) iterator->upstream_component->class;
384
385 iterator->methods.next =
386 (bt_self_component_port_input_message_iterator_next_method)
387 src_comp_cls->methods.msg_iter_next;
388 iterator->methods.seek_ns_from_origin =
389 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
390 src_comp_cls->methods.msg_iter_seek_ns_from_origin;
391 iterator->methods.seek_beginning =
392 (bt_self_component_port_input_message_iterator_seek_beginning_method)
393 src_comp_cls->methods.msg_iter_seek_beginning;
394 iterator->methods.can_seek_ns_from_origin =
395 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
396 src_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
397 iterator->methods.can_seek_beginning =
398 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
399 src_comp_cls->methods.msg_iter_can_seek_beginning;
400 break;
401 }
402 case BT_COMPONENT_CLASS_TYPE_FILTER:
403 {
404 struct bt_component_class_filter *flt_comp_cls =
405 (void *) iterator->upstream_component->class;
406
407 iterator->methods.next =
408 (bt_self_component_port_input_message_iterator_next_method)
409 flt_comp_cls->methods.msg_iter_next;
410 iterator->methods.seek_ns_from_origin =
411 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
412 flt_comp_cls->methods.msg_iter_seek_ns_from_origin;
413 iterator->methods.seek_beginning =
414 (bt_self_component_port_input_message_iterator_seek_beginning_method)
415 flt_comp_cls->methods.msg_iter_seek_beginning;
416 iterator->methods.can_seek_ns_from_origin =
417 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
418 flt_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
419 iterator->methods.can_seek_beginning =
420 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
421 flt_comp_cls->methods.msg_iter_can_seek_beginning;
422 break;
423 }
424 default:
425 abort();
426 }
427
428 if (iterator->methods.seek_ns_from_origin &&
429 !iterator->methods.can_seek_ns_from_origin) {
430 iterator->methods.can_seek_ns_from_origin =
431 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
432 can_seek_ns_from_origin_true;
433 }
434
435 if (iterator->methods.seek_beginning &&
436 !iterator->methods.can_seek_beginning) {
437 iterator->methods.can_seek_beginning =
438 (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
439 can_seek_beginning_true;
440 }
441
442 switch (upstream_comp_cls->type) {
443 case BT_COMPONENT_CLASS_TYPE_SOURCE:
444 {
445 struct bt_component_class_source *src_comp_cls =
446 (void *) upstream_comp_cls;
447
448 init_method =
449 (init_method_t) src_comp_cls->methods.msg_iter_init;
450 break;
451 }
452 case BT_COMPONENT_CLASS_TYPE_FILTER:
453 {
454 struct bt_component_class_filter *flt_comp_cls =
455 (void *) upstream_comp_cls;
456
457 init_method =
458 (init_method_t) flt_comp_cls->methods.msg_iter_init;
459 break;
460 }
461 default:
462 /* Unreachable */
463 abort();
464 }
465
466 if (init_method) {
467 enum bt_component_class_message_iterator_init_method_status iter_status;
468
469 BT_LIB_LOGD("Calling user's initialization method: %!+i", iterator);
470 iter_status = init_method(iterator, upstream_comp,
471 upstream_port);
472 BT_LOGD("User method returned: status=%s",
473 bt_common_func_status_string(iter_status));
474 if (iter_status != BT_FUNC_STATUS_OK) {
475 BT_LIB_LOGW_APPEND_CAUSE(
476 "Component input port message iterator initialization method failed: "
477 "%![iter-]+i, status=%s",
478 iterator,
479 bt_common_func_status_string(iter_status));
480 status = iter_status;
481 goto error;
482 }
483 }
484
485 if (downstream_msg_iter) {
486 /* Set this message iterator's downstream message iterator */
487 iterator->downstream_msg_iter = downstream_msg_iter;
488
489 /*
490 * Add this message iterator to the downstream message
491 * iterator's array of upstream message iterators.
492 */
493 g_ptr_array_add(downstream_msg_iter->upstream_msg_iters,
494 iterator);
495 }
496
497 set_self_comp_port_input_msg_iterator_state(iterator,
498 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
499 g_ptr_array_add(port->connection->iterators, iterator);
500 BT_LIB_LOGI("Created message iterator on self component input port: "
501 "%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
502 upstream_port, upstream_comp, iterator);
503
504 *message_iterator = iterator;
505 status = BT_FUNC_STATUS_OK;
506 goto end;
507
508 error:
509 BT_OBJECT_PUT_REF_AND_RESET(iterator);
510
511 end:
512 return status;
513 }
514
515 bt_self_component_port_input_message_iterator_create_from_message_iterator_status
516 bt_self_component_port_input_message_iterator_create_from_message_iterator(
517 struct bt_self_message_iterator *self_msg_iter,
518 struct bt_self_component_port_input *input_port,
519 struct bt_self_component_port_input_message_iterator **message_iterator)
520 {
521 BT_ASSERT_PRE_NON_NULL(self_msg_iter, "Message iterator");
522 return create_self_component_input_port_message_iterator(self_msg_iter,
523 input_port, message_iterator);
524 }
525
526 bt_self_component_port_input_message_iterator_create_from_sink_component_status
527 bt_self_component_port_input_message_iterator_create_from_sink_component(
528 struct bt_self_component_sink *self_comp,
529 struct bt_self_component_port_input *input_port,
530 struct bt_self_component_port_input_message_iterator **message_iterator)
531 {
532 BT_ASSERT_PRE_NON_NULL(self_comp, "Sink component");
533 return create_self_component_input_port_message_iterator(NULL,
534 input_port, message_iterator);
535 }
536
537 void *bt_self_message_iterator_get_data(
538 const struct bt_self_message_iterator *self_iterator)
539 {
540 struct bt_self_component_port_input_message_iterator *iterator =
541 (void *) self_iterator;
542
543 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
544 return iterator->user_data;
545 }
546
547 void bt_self_message_iterator_set_data(
548 struct bt_self_message_iterator *self_iterator, void *data)
549 {
550 struct bt_self_component_port_input_message_iterator *iterator =
551 (void *) self_iterator;
552
553 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
554 iterator->user_data = data;
555 BT_LIB_LOGD("Set message iterator's user data: "
556 "%!+i, user-data-addr=%p", iterator, data);
557 }
558
559 /*
560 * Validate that the default clock snapshot in `msg` doesn't make us go back in
561 * time.
562 */
563
564 BT_ASSERT_POST_DEV_FUNC
565 static
566 bool clock_snapshots_are_monotonic_one(
567 struct bt_self_component_port_input_message_iterator *iterator,
568 const bt_message *msg)
569 {
570 const struct bt_clock_snapshot *clock_snapshot = NULL;
571 bt_message_type message_type = bt_message_get_type(msg);
572 int64_t ns_from_origin;
573 enum bt_clock_snapshot_get_ns_from_origin_status clock_snapshot_status;
574
575 /*
576 * The default is true: if we can't figure out the clock snapshot
577 * (or there is none), assume it is fine.
578 */
579 bool result = true;
580
581 switch (message_type) {
582 case BT_MESSAGE_TYPE_EVENT:
583 {
584 struct bt_message_event *event_msg = (struct bt_message_event *) msg;
585 clock_snapshot = event_msg->default_cs;
586 break;
587 }
588 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
589 {
590 struct bt_message_message_iterator_inactivity *inactivity_msg =
591 (struct bt_message_message_iterator_inactivity *) msg;
592 clock_snapshot = inactivity_msg->default_cs;
593 break;
594 }
595 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
596 case BT_MESSAGE_TYPE_PACKET_END:
597 {
598 struct bt_message_packet *packet_msg = (struct bt_message_packet *) msg;
599 clock_snapshot = packet_msg->default_cs;
600 break;
601 }
602 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
603 case BT_MESSAGE_TYPE_STREAM_END:
604 {
605 struct bt_message_stream *stream_msg = (struct bt_message_stream *) msg;
606 if (stream_msg->default_cs_state != BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
607 goto end;
608 }
609
610 clock_snapshot = stream_msg->default_cs;
611 break;
612 }
613 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
614 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
615 {
616 struct bt_message_discarded_items *discarded_msg =
617 (struct bt_message_discarded_items *) msg;
618
619 clock_snapshot = discarded_msg->default_begin_cs;
620 break;
621 }
622 }
623
624 if (!clock_snapshot) {
625 goto end;
626 }
627
628 clock_snapshot_status = bt_clock_snapshot_get_ns_from_origin(clock_snapshot, &ns_from_origin);
629 if (clock_snapshot_status != BT_FUNC_STATUS_OK) {
630 goto end;
631 }
632
633 result = ns_from_origin >= iterator->last_ns_from_origin;
634 iterator->last_ns_from_origin = ns_from_origin;
635 end:
636 return result;
637 }
638
639 BT_ASSERT_POST_DEV_FUNC
640 static
641 bool clock_snapshots_are_monotonic(
642 struct bt_self_component_port_input_message_iterator *iterator,
643 bt_message_array_const msgs, uint64_t msg_count)
644 {
645 uint64_t i;
646 bool result;
647
648 for (i = 0; i < msg_count; i++) {
649 if (!clock_snapshots_are_monotonic_one(iterator, msgs[i])) {
650 result = false;
651 goto end;
652 }
653 }
654
655 result = true;
656
657 end:
658 return result;
659 }
660
661 /*
662 * When a new stream begins, verify that the clock class tied to this
663 * stream is compatible with what we've seen before.
664 */
665
666 BT_ASSERT_POST_DEV_FUNC
667 static
668 bool clock_classes_are_compatible_one(struct bt_self_component_port_input_message_iterator *iterator,
669 const struct bt_message *msg)
670 {
671 enum bt_message_type message_type = bt_message_get_type(msg);
672 bool result;
673
674 if (message_type == BT_MESSAGE_TYPE_STREAM_BEGINNING) {
675 const struct bt_message_stream *stream_msg = (struct bt_message_stream *) msg;
676 const struct bt_clock_class *clock_class = stream_msg->stream->class->default_clock_class;
677 bt_uuid clock_class_uuid = NULL;
678
679 if (clock_class) {
680 clock_class_uuid = bt_clock_class_get_uuid(clock_class);
681 }
682
683 switch (iterator->clock_expectation.type) {
684 case CLOCK_EXPECTATION_UNSET:
685 /*
686 * This is the first time we see a message with a clock
687 * snapshot: record the properties of that clock, against
688 * which we'll compare the clock properties of the following
689 * messages.
690 */
691
692 if (!clock_class) {
693 iterator->clock_expectation.type = CLOCK_EXPECTATION_NONE;
694 } else if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
695 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_UNIX;
696 } else if (clock_class_uuid) {
697 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_OTHER_UUID;
698 bt_uuid_copy(iterator->clock_expectation.uuid, clock_class_uuid);
699 } else {
700 iterator->clock_expectation.type = CLOCK_EXPECTATION_ORIGIN_OTHER_NO_UUID;
701 }
702 break;
703
704 case CLOCK_EXPECTATION_NONE:
705 if (clock_class) {
706 BT_ASSERT_POST_DEV_MSG(
707 "Expecting no clock class, got one: %![cc-]+K",
708 clock_class);
709 result = false;
710 goto end;
711 }
712
713 break;
714
715 case CLOCK_EXPECTATION_ORIGIN_UNIX:
716 if (!clock_class) {
717 BT_ASSERT_POST_DEV_MSG(
718 "Expecting a clock class, got none.");
719 result = false;
720 goto end;
721 }
722
723 if (!bt_clock_class_origin_is_unix_epoch(clock_class)) {
724 BT_ASSERT_POST_DEV_MSG(
725 "Expecting a clock class with Unix epoch origin: %![cc-]+K",
726 clock_class);
727 result = false;
728 goto end;
729 }
730 break;
731
732 case CLOCK_EXPECTATION_ORIGIN_OTHER_UUID:
733 if (!clock_class) {
734 BT_ASSERT_POST_DEV_MSG(
735 "Expecting a clock class, got none.");
736 result = false;
737 goto end;
738 }
739
740 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
741 BT_ASSERT_POST_DEV_MSG(
742 "Expecting a clock class without Unix epoch origin: %![cc-]+K",
743 clock_class);
744 result = false;
745 goto end;
746 }
747
748 if (!clock_class_uuid) {
749 BT_ASSERT_POST_DEV_MSG(
750 "Expecting a clock class with UUID: %![cc-]+K",
751 clock_class);
752 result = false;
753 goto end;
754 }
755
756 if (bt_uuid_compare(iterator->clock_expectation.uuid, clock_class_uuid)) {
757 BT_ASSERT_POST_DEV_MSG(
758 "Expecting a clock class with UUID, got one "
759 "with a different UUID: %![cc-]+K, expected-uuid=%!u",
760 clock_class, iterator->clock_expectation.uuid);
761 result = false;
762 goto end;
763 }
764 break;
765
766 case CLOCK_EXPECTATION_ORIGIN_OTHER_NO_UUID:
767 if (!clock_class) {
768 BT_ASSERT_POST_DEV_MSG(
769 "Expecting a clock class, got none.");
770 result = false;
771 goto end;
772 }
773
774 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
775 BT_ASSERT_POST_DEV_MSG(
776 "Expecting a clock class without Unix epoch origin: %![cc-]+K",
777 clock_class);
778 result = false;
779 goto end;
780 }
781
782 if (clock_class_uuid) {
783 BT_ASSERT_POST_DEV_MSG(
784 "Expecting a clock class without UUID: %![cc-]+K",
785 clock_class);
786 result = false;
787 goto end;
788 }
789 break;
790 }
791 }
792
793 result = true;
794
795 end:
796 return result;
797 }
798
799 BT_ASSERT_POST_DEV_FUNC
800 static
801 bool clock_classes_are_compatible(
802 struct bt_self_component_port_input_message_iterator *iterator,
803 bt_message_array_const msgs, uint64_t msg_count)
804 {
805 uint64_t i;
806 bool result;
807
808 for (i = 0; i < msg_count; i++) {
809 if (!clock_classes_are_compatible_one(iterator, msgs[i])) {
810 result = false;
811 goto end;
812 }
813 }
814
815 result = true;
816
817 end:
818 return result;
819 }
820
821 /*
822 * Call the `next` method of the iterator. Do some validation on the returned
823 * messages.
824 */
825
826 static
827 enum bt_component_class_message_iterator_next_method_status
828 call_iterator_next_method(
829 struct bt_self_component_port_input_message_iterator *iterator,
830 bt_message_array_const msgs, uint64_t capacity, uint64_t *user_count)
831 {
832 enum bt_component_class_message_iterator_next_method_status status;
833
834 BT_ASSERT(iterator->methods.next);
835 BT_LOGD_STR("Calling user's \"next\" method.");
836 status = iterator->methods.next(iterator, msgs, capacity, user_count);
837 BT_LOGD("User method returned: status=%s, msg-count=%" PRIu64,
838 bt_common_func_status_string(status), *user_count);
839
840 if (status == BT_FUNC_STATUS_OK) {
841 BT_ASSERT_POST_DEV(clock_classes_are_compatible(iterator, msgs, *user_count),
842 "Clocks are not compatible");
843 BT_ASSERT_POST_DEV(clock_snapshots_are_monotonic(iterator, msgs, *user_count),
844 "Clock snapshots are not monotonic");
845 }
846
847 return status;
848 }
849
850 enum bt_message_iterator_next_status
851 bt_self_component_port_input_message_iterator_next(
852 struct bt_self_component_port_input_message_iterator *iterator,
853 bt_message_array_const *msgs, uint64_t *user_count)
854 {
855 enum bt_message_iterator_next_status status = BT_FUNC_STATUS_OK;
856
857 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
858 BT_ASSERT_PRE_DEV_NON_NULL(msgs, "Message array (output)");
859 BT_ASSERT_PRE_DEV_NON_NULL(user_count, "Message count (output)");
860 BT_ASSERT_PRE_DEV(iterator->state ==
861 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE,
862 "Message iterator's \"next\" called, but "
863 "message iterator is in the wrong state: %!+i", iterator);
864 BT_ASSERT(iterator->upstream_component);
865 BT_ASSERT(iterator->upstream_component->class);
866 BT_ASSERT_PRE_DEV(
867 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
868 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
869 "Graph is not configured: %!+g",
870 bt_component_borrow_graph(iterator->upstream_component));
871 BT_LIB_LOGD("Getting next self component input port "
872 "message iterator's messages: %!+i, batch-size=%u",
873 iterator, MSG_BATCH_SIZE);
874
875 /*
876 * Call the user's "next" method to get the next messages
877 * and status.
878 */
879 *user_count = 0;
880 status = (int) call_iterator_next_method(iterator,
881 (void *) iterator->msgs->pdata, MSG_BATCH_SIZE,
882 user_count);
883 BT_LOGD("User method returned: status=%s, msg-count=%" PRIu64,
884 bt_common_func_status_string(status), *user_count);
885 if (status < 0) {
886 BT_LIB_LOGW_APPEND_CAUSE(
887 "Component input port message iterator's \"next\" method failed: "
888 "%![iter-]+i, status=%s",
889 iterator, bt_common_func_status_string(status));
890 goto end;
891 }
892
893 /*
894 * There is no way that this iterator could have been finalized
895 * during its "next" method, as the only way to do this is to
896 * put the last iterator's reference, and this can only be done
897 * by its downstream owner.
898 *
899 * For the same reason, there is no way that this iterator could
900 * have seeked (cannot seek a self message iterator).
901 */
902 BT_ASSERT(iterator->state ==
903 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
904
905 switch (status) {
906 case BT_FUNC_STATUS_OK:
907 BT_ASSERT_POST_DEV(*user_count <= MSG_BATCH_SIZE,
908 "Invalid returned message count: greater than "
909 "batch size: count=%" PRIu64 ", batch-size=%u",
910 *user_count, MSG_BATCH_SIZE);
911 *msgs = (void *) iterator->msgs->pdata;
912 break;
913 case BT_FUNC_STATUS_AGAIN:
914 goto end;
915 case BT_FUNC_STATUS_END:
916 set_self_comp_port_input_msg_iterator_state(iterator,
917 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED);
918 goto end;
919 default:
920 /* Unknown non-error status */
921 abort();
922 }
923
924 end:
925 return status;
926 }
927
928 struct bt_component *
929 bt_self_component_port_input_message_iterator_borrow_component(
930 struct bt_self_component_port_input_message_iterator *iterator)
931 {
932 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
933 return iterator->upstream_component;
934 }
935
936 const struct bt_component *
937 bt_self_component_port_input_message_iterator_borrow_component_const(
938 const struct bt_self_component_port_input_message_iterator *iterator)
939 {
940 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
941 return iterator->upstream_component;
942 }
943
944 struct bt_self_component *bt_self_message_iterator_borrow_component(
945 struct bt_self_message_iterator *self_iterator)
946 {
947 struct bt_self_component_port_input_message_iterator *iterator =
948 (void *) self_iterator;
949
950 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
951 return (void *) iterator->upstream_component;
952 }
953
954 struct bt_self_port_output *bt_self_message_iterator_borrow_port(
955 struct bt_self_message_iterator *self_iterator)
956 {
957 struct bt_self_component_port_input_message_iterator *iterator =
958 (void *) self_iterator;
959
960 BT_ASSERT_PRE_DEV_NON_NULL(iterator, "Message iterator");
961 return (void *) iterator->upstream_port;
962 }
963
964 bt_bool bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
965 struct bt_self_component_port_input_message_iterator *iterator,
966 int64_t ns_from_origin)
967 {
968 bt_bool can = BT_FALSE;
969
970 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
971 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
972 BT_ASSERT_PRE(
973 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
974 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
975 "Graph is not configured: %!+g",
976 bt_component_borrow_graph(iterator->upstream_component));
977
978 if (iterator->methods.can_seek_ns_from_origin) {
979 can = iterator->methods.can_seek_ns_from_origin(iterator,
980 ns_from_origin);
981 goto end;
982 }
983
984 /*
985 * Automatic seeking fall back: if we can seek to the beginning,
986 * then we can automatically seek to any message.
987 */
988 if (iterator->methods.can_seek_beginning) {
989 can = iterator->methods.can_seek_beginning(iterator);
990 }
991
992 end:
993 return can;
994 }
995
996 bt_bool bt_self_component_port_input_message_iterator_can_seek_beginning(
997 struct bt_self_component_port_input_message_iterator *iterator)
998 {
999 bt_bool can = BT_FALSE;
1000
1001 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1002 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
1003 BT_ASSERT_PRE(
1004 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1005 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
1006 "Graph is not configured: %!+g",
1007 bt_component_borrow_graph(iterator->upstream_component));
1008
1009 if (iterator->methods.can_seek_beginning) {
1010 can = iterator->methods.can_seek_beginning(iterator);
1011 }
1012
1013 return can;
1014 }
1015
1016 static inline
1017 void set_iterator_state_after_seeking(
1018 struct bt_self_component_port_input_message_iterator *iterator,
1019 int status)
1020 {
1021 enum bt_self_component_port_input_message_iterator_state new_state = 0;
1022
1023 /* Set iterator's state depending on seeking status */
1024 switch (status) {
1025 case BT_FUNC_STATUS_OK:
1026 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE;
1027 break;
1028 case BT_FUNC_STATUS_AGAIN:
1029 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN;
1030 break;
1031 case BT_FUNC_STATUS_ERROR:
1032 case BT_FUNC_STATUS_MEMORY_ERROR:
1033 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR;
1034 break;
1035 case BT_FUNC_STATUS_END:
1036 new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED;
1037 break;
1038 default:
1039 abort();
1040 }
1041
1042 set_self_comp_port_input_msg_iterator_state(iterator, new_state);
1043 }
1044
1045 static
1046 void reset_iterator_expectations(
1047 struct bt_self_component_port_input_message_iterator *iterator)
1048 {
1049 iterator->last_ns_from_origin = INT64_MIN;
1050 iterator->clock_expectation.type = CLOCK_EXPECTATION_UNSET;
1051 }
1052
1053 enum bt_message_iterator_seek_beginning_status
1054 bt_self_component_port_input_message_iterator_seek_beginning(
1055 struct bt_self_component_port_input_message_iterator *iterator)
1056 {
1057 int status;
1058
1059 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1060 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
1061 BT_ASSERT_PRE(
1062 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1063 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
1064 "Graph is not configured: %!+g",
1065 bt_component_borrow_graph(iterator->upstream_component));
1066 BT_ASSERT_PRE(
1067 bt_self_component_port_input_message_iterator_can_seek_beginning(
1068 iterator),
1069 "Message iterator cannot seek beginning: %!+i", iterator);
1070
1071 /*
1072 * We are seeking, reset our expectations about how the following
1073 * messages should look like.
1074 */
1075 reset_iterator_expectations(iterator);
1076
1077 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i", iterator);
1078 set_self_comp_port_input_msg_iterator_state(iterator,
1079 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
1080 status = iterator->methods.seek_beginning(iterator);
1081 BT_LOGD("User method returned: status=%s",
1082 bt_common_func_status_string(status));
1083 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1084 status == BT_FUNC_STATUS_ERROR ||
1085 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1086 status == BT_FUNC_STATUS_AGAIN,
1087 "Unexpected status: %![iter-]+i, status=%s",
1088 iterator, bt_common_func_status_string(status));
1089 if (status < 0) {
1090 BT_LIB_LOGW_APPEND_CAUSE(
1091 "Component input port message iterator's \"seek beginning\" method failed: "
1092 "%![iter-]+i, status=%s",
1093 iterator, bt_common_func_status_string(status));
1094 }
1095
1096 set_iterator_state_after_seeking(iterator, status);
1097 return status;
1098 }
1099
1100 /*
1101 * Structure used to record the state of a given stream during the fast-forward
1102 * phase of an auto-seek.
1103 */
1104 struct auto_seek_stream_state {
1105 /*
1106 * Value representing which step of this timeline we are at.
1107 *
1108 * time --->
1109 * [SB] 1 [PB] 2 [PE] 1 [SE]
1110 *
1111 * At each point in the timeline, the messages we need to replicate are:
1112 *
1113 * 1: Stream beginning
1114 * 2: Stream beginning, packet beginning
1115 *
1116 * Before "Stream beginning" and after "Stream end", we don't need to
1117 * replicate anything as the stream doesn't exist.
1118 */
1119 enum {
1120 AUTO_SEEK_STREAM_STATE_STREAM_BEGAN,
1121 AUTO_SEEK_STREAM_STATE_PACKET_BEGAN,
1122 } state;
1123
1124 /*
1125 * If `state` is AUTO_SEEK_STREAM_STATE_PACKET_BEGAN, the packet we are
1126 * in. This is a weak reference, since the packet will always be
1127 * alive by the time we use it.
1128 */
1129 struct bt_packet *packet;
1130
1131 /* Have we see a message with a clock snapshot yet? */
1132 bool seen_clock_snapshot;
1133 };
1134
1135 static
1136 struct auto_seek_stream_state *create_auto_seek_stream_state(void)
1137 {
1138 return g_new0(struct auto_seek_stream_state, 1);
1139 }
1140
1141 static
1142 void destroy_auto_seek_stream_state(void *ptr)
1143 {
1144 g_free(ptr);
1145 }
1146
1147 static
1148 GHashTable *create_auto_seek_stream_states(void)
1149 {
1150 return g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL,
1151 destroy_auto_seek_stream_state);
1152 }
1153
1154 static
1155 void destroy_auto_seek_stream_states(GHashTable *stream_states)
1156 {
1157 g_hash_table_destroy(stream_states);
1158 }
1159
1160 /*
1161 * Handle one message while we are in the fast-forward phase of an auto-seek.
1162 *
1163 * Sets `*got_first` to true if the message's timestamp is greater or equal to
1164 * `ns_from_origin`. In other words, if this is the first message after our
1165 * seek point.
1166 *
1167 * `stream_states` is an hash table of `bt_stream *` (weak reference) to
1168 * `struct auto_seek_stream_state` used to keep the state of each stream
1169 * during the fast-forward.
1170 */
1171
1172 static inline
1173 int auto_seek_handle_message(
1174 struct bt_self_component_port_input_message_iterator *iterator,
1175 int64_t ns_from_origin, const struct bt_message *msg,
1176 bool *got_first, GHashTable *stream_states)
1177 {
1178 int status = BT_FUNC_STATUS_OK;
1179 int64_t msg_ns_from_origin;
1180 const struct bt_clock_snapshot *clk_snapshot = NULL;
1181 int ret;
1182
1183 BT_ASSERT(msg);
1184 BT_ASSERT(got_first);
1185
1186 switch (msg->type) {
1187 case BT_MESSAGE_TYPE_EVENT:
1188 {
1189 const struct bt_message_event *event_msg =
1190 (const void *) msg;
1191
1192 clk_snapshot = event_msg->default_cs;
1193 BT_ASSERT_POST_DEV(clk_snapshot,
1194 "Event message has no default clock snapshot: %!+n",
1195 event_msg);
1196 break;
1197 }
1198 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
1199 {
1200 const struct bt_message_message_iterator_inactivity *inactivity_msg =
1201 (const void *) msg;
1202
1203 clk_snapshot = inactivity_msg->default_cs;
1204 BT_ASSERT(clk_snapshot);
1205 break;
1206 }
1207 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
1208 case BT_MESSAGE_TYPE_PACKET_END:
1209 {
1210 const struct bt_message_packet *packet_msg =
1211 (const void *) msg;
1212
1213 clk_snapshot = packet_msg->default_cs;
1214 BT_ASSERT_POST_DEV(clk_snapshot,
1215 "Packet message has no default clock snapshot: %!+n",
1216 packet_msg);
1217 break;
1218 }
1219 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
1220 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
1221 {
1222 struct bt_message_discarded_items *msg_disc_items =
1223 (void *) msg;
1224
1225 BT_ASSERT_POST_DEV(msg_disc_items->default_begin_cs &&
1226 msg_disc_items->default_end_cs,
1227 "Discarded events/packets message has no default clock snapshots: %!+n",
1228 msg_disc_items);
1229 ret = bt_clock_snapshot_get_ns_from_origin(
1230 msg_disc_items->default_begin_cs,
1231 &msg_ns_from_origin);
1232 if (ret) {
1233 status = BT_FUNC_STATUS_ERROR;
1234 goto end;
1235 }
1236
1237 if (msg_ns_from_origin >= ns_from_origin) {
1238 *got_first = true;
1239 goto push_msg;
1240 }
1241
1242 ret = bt_clock_snapshot_get_ns_from_origin(
1243 msg_disc_items->default_end_cs,
1244 &msg_ns_from_origin);
1245 if (ret) {
1246 status = BT_FUNC_STATUS_ERROR;
1247 goto end;
1248 }
1249
1250 if (msg_ns_from_origin >= ns_from_origin) {
1251 /*
1252 * The discarded items message's beginning time
1253 * is before the requested seeking time, but its
1254 * end time is after. Modify the message so as
1255 * to set its beginning time to the requested
1256 * seeking time, and make its item count unknown
1257 * as we don't know if items were really
1258 * discarded within the new time range.
1259 */
1260 uint64_t new_begin_raw_value = 0;
1261
1262 ret = bt_clock_class_clock_value_from_ns_from_origin(
1263 msg_disc_items->default_end_cs->clock_class,
1264 ns_from_origin, &new_begin_raw_value);
1265 if (ret) {
1266 status = BT_FUNC_STATUS_ERROR;
1267 goto end;
1268 }
1269
1270 bt_clock_snapshot_set_raw_value(
1271 msg_disc_items->default_begin_cs,
1272 new_begin_raw_value);
1273 msg_disc_items->count.base.avail =
1274 BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE;
1275
1276 /*
1277 * It is safe to push it because its beginning
1278 * time is exactly the requested seeking time.
1279 */
1280 goto push_msg;
1281 } else {
1282 goto skip_msg;
1283 }
1284 }
1285 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
1286 case BT_MESSAGE_TYPE_STREAM_END:
1287 {
1288 struct bt_message_stream *stream_msg =
1289 (struct bt_message_stream *) msg;
1290
1291 if (stream_msg->default_cs_state != BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
1292 /* Ignore */
1293 goto skip_msg;
1294 }
1295
1296 clk_snapshot = stream_msg->default_cs;
1297 break;
1298 }
1299 default:
1300 abort();
1301 }
1302
1303 BT_ASSERT(clk_snapshot);
1304 ret = bt_clock_snapshot_get_ns_from_origin(clk_snapshot,
1305 &msg_ns_from_origin);
1306 if (ret) {
1307 status = BT_FUNC_STATUS_ERROR;
1308 goto end;
1309 }
1310
1311 if (msg_ns_from_origin >= ns_from_origin) {
1312 *got_first = true;
1313 goto push_msg;
1314 }
1315
1316 skip_msg:
1317 /* This message won't be sent downstream. */
1318 switch (msg->type) {
1319 case BT_MESSAGE_TYPE_STREAM_BEGINNING:
1320 {
1321 const struct bt_message_stream *stream_msg = (const void *) msg;
1322 struct auto_seek_stream_state *stream_state;
1323
1324 /* Update stream's state: stream began. */
1325 stream_state = create_auto_seek_stream_state();
1326 if (!stream_state) {
1327 status = BT_FUNC_STATUS_MEMORY_ERROR;
1328 goto end;
1329 }
1330
1331 stream_state->state = AUTO_SEEK_STREAM_STATE_STREAM_BEGAN;
1332
1333 if (stream_msg->default_cs_state == BT_MESSAGE_STREAM_CLOCK_SNAPSHOT_STATE_KNOWN) {
1334 stream_state->seen_clock_snapshot = true;
1335 }
1336
1337 BT_ASSERT(!bt_g_hash_table_contains(stream_states, stream_msg->stream));
1338 g_hash_table_insert(stream_states, stream_msg->stream, stream_state);
1339 break;
1340 }
1341 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
1342 {
1343 const struct bt_message_packet *packet_msg =
1344 (const void *) msg;
1345 struct auto_seek_stream_state *stream_state;
1346
1347 /* Update stream's state: packet began. */
1348 stream_state = g_hash_table_lookup(stream_states, packet_msg->packet->stream);
1349 BT_ASSERT(stream_state);
1350
1351 BT_ASSERT(stream_state->state == AUTO_SEEK_STREAM_STATE_STREAM_BEGAN);
1352 stream_state->state = AUTO_SEEK_STREAM_STATE_PACKET_BEGAN;
1353 BT_ASSERT(!stream_state->packet);
1354 stream_state->packet = packet_msg->packet;
1355
1356 if (packet_msg->packet->stream->class->packets_have_beginning_default_clock_snapshot) {
1357 stream_state->seen_clock_snapshot = true;
1358 }
1359
1360 break;
1361 }
1362 case BT_MESSAGE_TYPE_EVENT:
1363 {
1364 const struct bt_message_event *event_msg = (const void *) msg;
1365 struct auto_seek_stream_state *stream_state;
1366
1367 stream_state = g_hash_table_lookup(stream_states,
1368 event_msg->event->packet->stream);
1369 BT_ASSERT(stream_state);
1370
1371 // HELPME: are we sure that event messages have clock snapshots at this point?
1372 stream_state->seen_clock_snapshot = true;
1373
1374 break;
1375 }
1376 case BT_MESSAGE_TYPE_PACKET_END:
1377 {
1378 const struct bt_message_packet *packet_msg =
1379 (const void *) msg;
1380 struct auto_seek_stream_state *stream_state;
1381
1382 /* Update stream's state: packet ended. */
1383 stream_state = g_hash_table_lookup(stream_states, packet_msg->packet->stream);
1384 BT_ASSERT(stream_state);
1385
1386 BT_ASSERT(stream_state->state == AUTO_SEEK_STREAM_STATE_PACKET_BEGAN);
1387 stream_state->state = AUTO_SEEK_STREAM_STATE_STREAM_BEGAN;
1388 BT_ASSERT(stream_state->packet);
1389 stream_state->packet = NULL;
1390
1391 if (packet_msg->packet->stream->class->packets_have_end_default_clock_snapshot) {
1392 stream_state->seen_clock_snapshot = true;
1393 }
1394
1395 break;
1396 }
1397 case BT_MESSAGE_TYPE_STREAM_END:
1398 {
1399 const struct bt_message_stream *stream_msg = (const void *) msg;
1400 struct auto_seek_stream_state *stream_state;
1401
1402 stream_state = g_hash_table_lookup(stream_states, stream_msg->stream);
1403 BT_ASSERT(stream_state);
1404 BT_ASSERT(stream_state->state == AUTO_SEEK_STREAM_STATE_STREAM_BEGAN);
1405 BT_ASSERT(!stream_state->packet);
1406
1407 /* Update stream's state: this stream doesn't exist anymore. */
1408 g_hash_table_remove(stream_states, stream_msg->stream);
1409 break;
1410 }
1411 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
1412 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
1413 {
1414 const struct bt_message_discarded_items *discarded_msg =
1415 (const void *) msg;
1416 struct auto_seek_stream_state *stream_state;
1417
1418 stream_state = g_hash_table_lookup(stream_states, discarded_msg->stream);
1419 BT_ASSERT(stream_state);
1420
1421 if ((msg->type == BT_MESSAGE_TYPE_DISCARDED_EVENTS && discarded_msg->stream->class->discarded_events_have_default_clock_snapshots) ||
1422 (msg->type == BT_MESSAGE_TYPE_DISCARDED_PACKETS && discarded_msg->stream->class->discarded_packets_have_default_clock_snapshots)) {
1423 stream_state->seen_clock_snapshot = true;
1424 }
1425
1426 break;
1427 }
1428 default:
1429 break;
1430 }
1431
1432 bt_object_put_no_null_check(msg);
1433 msg = NULL;
1434 goto end;
1435
1436 push_msg:
1437 g_queue_push_tail(iterator->auto_seek.msgs, (void *) msg);
1438 msg = NULL;
1439
1440 end:
1441 BT_ASSERT(!msg || status != BT_FUNC_STATUS_OK);
1442 return status;
1443 }
1444
1445 static
1446 int find_message_ge_ns_from_origin(
1447 struct bt_self_component_port_input_message_iterator *iterator,
1448 int64_t ns_from_origin, GHashTable *stream_states)
1449 {
1450 int status;
1451 enum bt_self_component_port_input_message_iterator_state init_state =
1452 iterator->state;
1453 const struct bt_message *messages[MSG_BATCH_SIZE];
1454 uint64_t user_count = 0;
1455 uint64_t i;
1456 bool got_first = false;
1457
1458 BT_ASSERT(iterator);
1459 memset(&messages[0], 0, sizeof(messages[0]) * MSG_BATCH_SIZE);
1460
1461 /*
1462 * Make this iterator temporarily active (not seeking) to call
1463 * the "next" method.
1464 */
1465 set_self_comp_port_input_msg_iterator_state(iterator,
1466 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
1467
1468 BT_ASSERT(iterator->methods.next);
1469
1470 while (!got_first) {
1471 /*
1472 * Call the user's "next" method to get the next
1473 * messages and status.
1474 */
1475 status = call_iterator_next_method(iterator,
1476 &messages[0], MSG_BATCH_SIZE, &user_count);
1477 BT_LOGD("User method returned: status=%s",
1478 bt_common_func_status_string(status));
1479 if (status < 0) {
1480 BT_LIB_LOGW_APPEND_CAUSE(
1481 "Component input port message iterator's \"next\" method failed: "
1482 "%![iter-]+i, status=%s",
1483 iterator, bt_common_func_status_string(status));
1484 }
1485
1486 /*
1487 * The user's "next" method must not do any action which
1488 * would change the iterator's state.
1489 */
1490 BT_ASSERT(iterator->state ==
1491 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
1492
1493 switch (status) {
1494 case BT_FUNC_STATUS_OK:
1495 BT_ASSERT_POST_DEV(user_count <= MSG_BATCH_SIZE,
1496 "Invalid returned message count: greater than "
1497 "batch size: count=%" PRIu64 ", batch-size=%u",
1498 user_count, MSG_BATCH_SIZE);
1499 break;
1500 case BT_FUNC_STATUS_AGAIN:
1501 case BT_FUNC_STATUS_ERROR:
1502 case BT_FUNC_STATUS_MEMORY_ERROR:
1503 case BT_FUNC_STATUS_END:
1504 goto end;
1505 default:
1506 abort();
1507 }
1508
1509 for (i = 0; i < user_count; i++) {
1510 if (got_first) {
1511 g_queue_push_tail(iterator->auto_seek.msgs,
1512 (void *) messages[i]);
1513 messages[i] = NULL;
1514 continue;
1515 }
1516
1517 status = auto_seek_handle_message(iterator,
1518 ns_from_origin, messages[i], &got_first,
1519 stream_states);
1520 if (status == BT_FUNC_STATUS_OK) {
1521 /* Message was either pushed or moved */
1522 messages[i] = NULL;
1523 } else {
1524 goto end;
1525 }
1526 }
1527 }
1528
1529 end:
1530 for (i = 0; i < user_count; i++) {
1531 if (messages[i]) {
1532 bt_object_put_no_null_check(messages[i]);
1533 }
1534 }
1535
1536 set_self_comp_port_input_msg_iterator_state(iterator, init_state);
1537 return status;
1538 }
1539
1540 /*
1541 * This function is installed as the iterator's next callback after we have
1542 * auto-seeked (seeked to the beginning and fast-forwarded) to send the
1543 * messages saved in iterator->auto_seek.msgs. Once this is done, the original
1544 * next callback is put back.
1545 */
1546
1547 static
1548 enum bt_component_class_message_iterator_next_method_status post_auto_seek_next(
1549 struct bt_self_component_port_input_message_iterator *iterator,
1550 bt_message_array_const msgs, uint64_t capacity,
1551 uint64_t *count)
1552 {
1553 BT_ASSERT(!g_queue_is_empty(iterator->auto_seek.msgs));
1554 *count = 0;
1555
1556 /*
1557 * Move auto-seek messages to the output array (which is this
1558 * iterator's base message array).
1559 */
1560 while (capacity > 0 && !g_queue_is_empty(iterator->auto_seek.msgs)) {
1561 msgs[*count] = g_queue_pop_head(iterator->auto_seek.msgs);
1562 capacity--;
1563 (*count)++;
1564 }
1565
1566 BT_ASSERT(*count > 0);
1567
1568 if (g_queue_is_empty(iterator->auto_seek.msgs)) {
1569 /* No more auto-seek messages, restore user's next callback. */
1570 BT_ASSERT(iterator->auto_seek.original_next_callback);
1571 iterator->methods.next = iterator->auto_seek.original_next_callback;
1572 iterator->auto_seek.original_next_callback = NULL;
1573 }
1574
1575 return BT_FUNC_STATUS_OK;
1576 }
1577
1578 static inline
1579 int clock_raw_value_from_ns_from_origin(const bt_clock_class *clock_class,
1580 int64_t ns_from_origin, uint64_t *raw_value)
1581 {
1582
1583 int64_t cc_offset_s = clock_class->offset_seconds;
1584 uint64_t cc_offset_cycles = clock_class->offset_cycles;
1585 uint64_t cc_freq = clock_class->frequency;
1586
1587 return bt_common_clock_value_from_ns_from_origin(cc_offset_s,
1588 cc_offset_cycles, cc_freq, ns_from_origin, raw_value);
1589 }
1590
1591
1592 enum bt_message_iterator_seek_ns_from_origin_status
1593 bt_self_component_port_input_message_iterator_seek_ns_from_origin(
1594 struct bt_self_component_port_input_message_iterator *iterator,
1595 int64_t ns_from_origin)
1596 {
1597 int status;
1598 GHashTable *stream_states = NULL;
1599
1600 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1601 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
1602 BT_ASSERT_PRE(
1603 bt_component_borrow_graph(iterator->upstream_component)->config_state !=
1604 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
1605 "Graph is not configured: %!+g",
1606 bt_component_borrow_graph(iterator->upstream_component));
1607 BT_ASSERT_PRE(
1608 bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
1609 iterator, ns_from_origin),
1610 "Message iterator cannot seek nanoseconds from origin: %!+i, "
1611 "ns-from-origin=%" PRId64, iterator, ns_from_origin);
1612 set_self_comp_port_input_msg_iterator_state(iterator,
1613 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
1614
1615 /*
1616 * We are seeking, reset our expectations about how the following
1617 * messages should look like.
1618 */
1619 reset_iterator_expectations(iterator);
1620
1621 if (iterator->methods.seek_ns_from_origin) {
1622 /* The iterator knows how to seek to a particular time, let it handle this. */
1623 BT_LIB_LOGD("Calling user's \"seek nanoseconds from origin\" method: "
1624 "%![iter-]+i, ns=%" PRId64, iterator, ns_from_origin);
1625 status = iterator->methods.seek_ns_from_origin(iterator,
1626 ns_from_origin);
1627 BT_LOGD("User method returned: status=%s",
1628 bt_common_func_status_string(status));
1629 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1630 status == BT_FUNC_STATUS_ERROR ||
1631 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1632 status == BT_FUNC_STATUS_AGAIN,
1633 "Unexpected status: %![iter-]+i, status=%s",
1634 iterator, bt_common_func_status_string(status));
1635 if (status < 0) {
1636 BT_LIB_LOGW_APPEND_CAUSE(
1637 "Component input port message iterator's \"seek nanoseconds from origin\" method failed: "
1638 "%![iter-]+i, status=%s",
1639 iterator, bt_common_func_status_string(status));
1640 }
1641 } else {
1642 /*
1643 * The iterator doesn't know how to seek to a particular time. We will
1644 * seek to the beginning and fast forward to the right place.
1645 */
1646 BT_ASSERT(iterator->methods.can_seek_beginning(iterator));
1647 BT_ASSERT(iterator->methods.seek_beginning);
1648 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i",
1649 iterator);
1650 status = iterator->methods.seek_beginning(iterator);
1651 BT_LOGD("User method returned: status=%s",
1652 bt_common_func_status_string(status));
1653 BT_ASSERT_POST(status == BT_FUNC_STATUS_OK ||
1654 status == BT_FUNC_STATUS_ERROR ||
1655 status == BT_FUNC_STATUS_MEMORY_ERROR ||
1656 status == BT_FUNC_STATUS_AGAIN,
1657 "Unexpected status: %![iter-]+i, status=%s",
1658 iterator, bt_common_func_status_string(status));
1659 if (status < 0) {
1660 BT_LIB_LOGW_APPEND_CAUSE(
1661 "Component input port message iterator's \"seek beginning\" method failed: "
1662 "%![iter-]+i, status=%s",
1663 iterator, bt_common_func_status_string(status));
1664 }
1665
1666 switch (status) {
1667 case BT_FUNC_STATUS_OK:
1668 break;
1669 case BT_FUNC_STATUS_ERROR:
1670 case BT_FUNC_STATUS_MEMORY_ERROR:
1671 case BT_FUNC_STATUS_AGAIN:
1672 goto end;
1673 default:
1674 abort();
1675 }
1676
1677 /*
1678 * Find the first message which has a default clock
1679 * snapshot greater than or equal to the requested
1680 * seeking time, and move the received messages from
1681 * this point in the batch to this iterator's auto-seek
1682 * message queue.
1683 */
1684 while (!g_queue_is_empty(iterator->auto_seek.msgs)) {
1685 bt_object_put_no_null_check(
1686 g_queue_pop_tail(iterator->auto_seek.msgs));
1687 }
1688
1689 stream_states = create_auto_seek_stream_states();
1690 if (!stream_states) {
1691 BT_LIB_LOGE_APPEND_CAUSE(
1692 "Failed to allocate one GHashTable.");
1693 status = BT_FUNC_STATUS_MEMORY_ERROR;
1694 goto end;
1695 }
1696
1697 status = find_message_ge_ns_from_origin(iterator,
1698 ns_from_origin, stream_states);
1699 switch (status) {
1700 case BT_FUNC_STATUS_OK:
1701 case BT_FUNC_STATUS_END:
1702 {
1703 GHashTableIter iter;
1704 gpointer key, value;
1705
1706 /*
1707 * If some streams exist at the seek time, prepend the
1708 * required messages to put those streams in the right
1709 * state.
1710 */
1711 g_hash_table_iter_init(&iter, stream_states);
1712 while (g_hash_table_iter_next (&iter, &key, &value)) {
1713 const bt_stream *stream = key;
1714 struct auto_seek_stream_state *stream_state =
1715 (struct auto_seek_stream_state *) value;
1716 bt_message *msg;
1717 const bt_clock_class *clock_class = bt_stream_class_borrow_default_clock_class_const(
1718 bt_stream_borrow_class_const(stream));
1719 /* Initialize to silence maybe-uninitialized warning. */
1720 uint64_t raw_value = 0;
1721
1722 /*
1723 * If we haven't seen a message with a clock snapshot, we don't know if our seek time is within
1724 * the clock's range, so it wouldn't be safe to try to convert ns_from_origin to a clock value.
1725 *
1726 * Also, it would be a bit of a lie to generate a stream begin message with the seek time as its
1727 * clock snapshot, because we don't really know if the stream existed at that time. If we have
1728 * seen a message with a clock snapshot in our seeking, then we are sure that the
1729 * seek time is not below the clock range, and we know the stream was active at that
1730 * time (and that we cut it short).
1731 */
1732 if (stream_state->seen_clock_snapshot) {
1733 if (clock_raw_value_from_ns_from_origin(clock_class, ns_from_origin, &raw_value) != 0) {
1734 BT_LIB_LOGW("Could not convert nanoseconds from origin to clock value: ns-from-origin=%" PRId64 ", %![cc-]+K",
1735 ns_from_origin, clock_class);
1736 status = BT_FUNC_STATUS_ERROR;
1737 goto end;
1738 }
1739 }
1740
1741 switch (stream_state->state) {
1742 case AUTO_SEEK_STREAM_STATE_PACKET_BEGAN:
1743 BT_ASSERT(stream_state->packet);
1744 BT_LIB_LOGD("Creating packet message: %![packet-]+a", stream_state->packet);
1745
1746 if (stream->class->packets_have_beginning_default_clock_snapshot) {
1747 /*
1748 * If we are in the PACKET_BEGAN state, it means we have seen a "packet beginning"
1749 * message. If "packet beginning" packets have clock snapshots, then we must have
1750 * seen a clock snapshot.
1751 */
1752 BT_ASSERT(stream_state->seen_clock_snapshot);
1753
1754 msg = bt_message_packet_beginning_create_with_default_clock_snapshot(
1755 (bt_self_message_iterator *) iterator, stream_state->packet, raw_value);
1756 } else {
1757 msg = bt_message_packet_beginning_create((bt_self_message_iterator *) iterator,
1758 stream_state->packet);
1759 }
1760
1761 if (!msg) {
1762 status = BT_FUNC_STATUS_MEMORY_ERROR;
1763 goto end;
1764 }
1765
1766 g_queue_push_head(iterator->auto_seek.msgs, msg);
1767 msg = NULL;
1768 /* fall-thru */
1769
1770 case AUTO_SEEK_STREAM_STATE_STREAM_BEGAN:
1771 msg = bt_message_stream_beginning_create(
1772 (bt_self_message_iterator *) iterator, stream);
1773 if (!msg) {
1774 status = BT_FUNC_STATUS_MEMORY_ERROR;
1775 goto end;
1776 }
1777
1778 if (stream_state->seen_clock_snapshot) {
1779 bt_message_stream_beginning_set_default_clock_snapshot(msg, raw_value);
1780 }
1781
1782 g_queue_push_head(iterator->auto_seek.msgs, msg);
1783 msg = NULL;
1784 break;
1785 }
1786 }
1787
1788 /*
1789 * If there are messages in the auto-seek
1790 * message queue, replace the user's "next"
1791 * method with a custom, temporary "next" method
1792 * which returns them.
1793 */
1794 if (!g_queue_is_empty(iterator->auto_seek.msgs)) {
1795 BT_ASSERT(!iterator->auto_seek.original_next_callback);
1796 iterator->auto_seek.original_next_callback = iterator->methods.next;
1797
1798 iterator->methods.next =
1799 (bt_self_component_port_input_message_iterator_next_method)
1800 post_auto_seek_next;
1801 }
1802
1803 /*
1804 * `BT_FUNC_STATUS_END` becomes
1805 * `BT_FUNC_STATUS_OK`: the next
1806 * time this iterator's "next" method is called,
1807 * it will return
1808 * `BT_FUNC_STATUS_END`.
1809 */
1810 status = BT_FUNC_STATUS_OK;
1811 break;
1812 }
1813 case BT_FUNC_STATUS_ERROR:
1814 case BT_FUNC_STATUS_MEMORY_ERROR:
1815 case BT_FUNC_STATUS_AGAIN:
1816 goto end;
1817 default:
1818 abort();
1819 }
1820 }
1821
1822 /*
1823 * The following messages returned by the next method (including
1824 * post_auto_seek_next) must be after (or at) `ns_from_origin`.
1825 */
1826 iterator->last_ns_from_origin = ns_from_origin;
1827
1828 end:
1829 if (stream_states) {
1830 destroy_auto_seek_stream_states(stream_states);
1831 stream_states = NULL;
1832 }
1833
1834 set_iterator_state_after_seeking(iterator, status);
1835 return status;
1836 }
1837
1838 bt_bool bt_self_message_iterator_is_interrupted(
1839 const struct bt_self_message_iterator *self_msg_iter)
1840 {
1841 const struct bt_self_component_port_input_message_iterator *iterator =
1842 (const void *) self_msg_iter;
1843
1844 BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
1845 return (bt_bool) bt_graph_is_interrupted(iterator->graph);
1846 }
1847
1848 void bt_self_component_port_input_message_iterator_get_ref(
1849 const struct bt_self_component_port_input_message_iterator *iterator)
1850 {
1851 bt_object_get_ref(iterator);
1852 }
1853
1854 void bt_self_component_port_input_message_iterator_put_ref(
1855 const struct bt_self_component_port_input_message_iterator *iterator)
1856 {
1857 bt_object_put_ref(iterator);
1858 }
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