lib: rename inactivity msg to msg iterator inactivity msg
[babeltrace.git] / plugins / utils / muxer / muxer.c
1 /*
2 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 #define BT_LOG_TAG "PLUGIN-UTILS-MUXER-FLT"
24 #include "logging.h"
25
26 #include <babeltrace/babeltrace-internal.h>
27 #include <babeltrace/compat/uuid-internal.h>
28 #include <babeltrace/babeltrace.h>
29 #include <babeltrace/value-internal.h>
30 #include <babeltrace/graph/component-internal.h>
31 #include <babeltrace/graph/message-iterator-internal.h>
32 #include <babeltrace/graph/connection-internal.h>
33 #include <plugins-common.h>
34 #include <glib.h>
35 #include <stdbool.h>
36 #include <inttypes.h>
37 #include <babeltrace/assert-internal.h>
38 #include <babeltrace/common-internal.h>
39 #include <stdlib.h>
40 #include <string.h>
41
42 #include "muxer.h"
43
44 #define ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME "assume-absolute-clock-classes"
45
46 struct muxer_comp {
47 /* Weak ref */
48 bt_self_component_filter *self_comp;
49
50 unsigned int next_port_num;
51 size_t available_input_ports;
52 bool initializing_muxer_msg_iter;
53 bool assume_absolute_clock_classes;
54 };
55
56 struct muxer_upstream_msg_iter {
57 /* Owned by this, NULL if ended */
58 bt_self_component_port_input_message_iterator *msg_iter;
59
60 /* Contains `const bt_message *`, owned by this */
61 GQueue *msgs;
62 };
63
64 enum muxer_msg_iter_clock_class_expectation {
65 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_ANY = 0,
66 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE,
67 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID,
68 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID,
69 };
70
71 struct muxer_msg_iter {
72 /*
73 * Array of struct muxer_upstream_msg_iter * (owned by this).
74 *
75 * NOTE: This array is searched in linearly to find the youngest
76 * current message. Keep this until benchmarks confirm that
77 * another data structure is faster than this for our typical
78 * use cases.
79 */
80 GPtrArray *muxer_upstream_msg_iters;
81
82 /* Last time returned in a message */
83 int64_t last_returned_ts_ns;
84
85 /* Clock class expectation state */
86 enum muxer_msg_iter_clock_class_expectation clock_class_expectation;
87
88 /*
89 * Expected clock class UUID, only valid when
90 * clock_class_expectation is
91 * MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID.
92 */
93 unsigned char expected_clock_class_uuid[BABELTRACE_UUID_LEN];
94 };
95
96 static
97 void destroy_muxer_upstream_msg_iter(
98 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter)
99 {
100 if (!muxer_upstream_msg_iter) {
101 return;
102 }
103
104 BT_LOGD("Destroying muxer's upstream message iterator wrapper: "
105 "addr=%p, msg-iter-addr=%p, queue-len=%u",
106 muxer_upstream_msg_iter,
107 muxer_upstream_msg_iter->msg_iter,
108 muxer_upstream_msg_iter->msgs->length);
109 bt_self_component_port_input_message_iterator_put_ref(muxer_upstream_msg_iter->msg_iter);
110
111 if (muxer_upstream_msg_iter->msgs) {
112 const bt_message *msg;
113
114 while ((msg = g_queue_pop_head(
115 muxer_upstream_msg_iter->msgs))) {
116 bt_message_put_ref(msg);
117 }
118
119 g_queue_free(muxer_upstream_msg_iter->msgs);
120 }
121
122 g_free(muxer_upstream_msg_iter);
123 }
124
125 static
126 struct muxer_upstream_msg_iter *muxer_msg_iter_add_upstream_msg_iter(
127 struct muxer_msg_iter *muxer_msg_iter,
128 bt_self_component_port_input_message_iterator *self_msg_iter)
129 {
130 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter =
131 g_new0(struct muxer_upstream_msg_iter, 1);
132
133 if (!muxer_upstream_msg_iter) {
134 BT_LOGE_STR("Failed to allocate one muxer's upstream message iterator wrapper.");
135 goto end;
136 }
137
138 muxer_upstream_msg_iter->msg_iter = self_msg_iter;
139 bt_self_component_port_input_message_iterator_get_ref(muxer_upstream_msg_iter->msg_iter);
140 muxer_upstream_msg_iter->msgs = g_queue_new();
141 if (!muxer_upstream_msg_iter->msgs) {
142 BT_LOGE_STR("Failed to allocate a GQueue.");
143 goto end;
144 }
145
146 g_ptr_array_add(muxer_msg_iter->muxer_upstream_msg_iters,
147 muxer_upstream_msg_iter);
148 BT_LOGD("Added muxer's upstream message iterator wrapper: "
149 "addr=%p, muxer-msg-iter-addr=%p, msg-iter-addr=%p",
150 muxer_upstream_msg_iter, muxer_msg_iter,
151 self_msg_iter);
152
153 end:
154 return muxer_upstream_msg_iter;
155 }
156
157 static
158 bt_self_component_status add_available_input_port(
159 bt_self_component_filter *self_comp)
160 {
161 struct muxer_comp *muxer_comp = bt_self_component_get_data(
162 bt_self_component_filter_as_self_component(self_comp));
163 bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
164 GString *port_name = NULL;
165
166 BT_ASSERT(muxer_comp);
167 port_name = g_string_new("in");
168 if (!port_name) {
169 BT_LOGE_STR("Failed to allocate a GString.");
170 status = BT_SELF_COMPONENT_STATUS_NOMEM;
171 goto end;
172 }
173
174 g_string_append_printf(port_name, "%u", muxer_comp->next_port_num);
175 status = bt_self_component_filter_add_input_port(
176 self_comp, port_name->str, NULL, NULL);
177 if (status != BT_SELF_COMPONENT_STATUS_OK) {
178 BT_LOGE("Cannot add input port to muxer component: "
179 "port-name=\"%s\", comp-addr=%p, status=%s",
180 port_name->str, self_comp,
181 bt_self_component_status_string(status));
182 goto end;
183 }
184
185 muxer_comp->available_input_ports++;
186 muxer_comp->next_port_num++;
187 BT_LOGD("Added one input port to muxer component: "
188 "port-name=\"%s\", comp-addr=%p",
189 port_name->str, self_comp);
190
191 end:
192 if (port_name) {
193 g_string_free(port_name, TRUE);
194 }
195
196 return status;
197 }
198
199 static
200 bt_self_component_status create_output_port(
201 bt_self_component_filter *self_comp)
202 {
203 return bt_self_component_filter_add_output_port(
204 self_comp, "out", NULL, NULL);
205 }
206
207 static
208 void destroy_muxer_comp(struct muxer_comp *muxer_comp)
209 {
210 if (!muxer_comp) {
211 return;
212 }
213
214 g_free(muxer_comp);
215 }
216
217 static
218 bt_value *get_default_params(void)
219 {
220 bt_value *params;
221 int ret;
222
223 params = bt_value_map_create();
224 if (!params) {
225 BT_LOGE_STR("Cannot create a map value object.");
226 goto error;
227 }
228
229 ret = bt_value_map_insert_bool_entry(params,
230 ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME, false);
231 if (ret) {
232 BT_LOGE_STR("Cannot add boolean value to map value object.");
233 goto error;
234 }
235
236 goto end;
237
238 error:
239 BT_VALUE_PUT_REF_AND_RESET(params);
240
241 end:
242 return params;
243 }
244
245 static
246 int configure_muxer_comp(struct muxer_comp *muxer_comp,
247 const bt_value *params)
248 {
249 bt_value *default_params = NULL;
250 bt_value *real_params = NULL;
251 const bt_value *assume_absolute_clock_classes = NULL;
252 int ret = 0;
253 bt_bool bool_val;
254
255 default_params = get_default_params();
256 if (!default_params) {
257 BT_LOGE("Cannot get default parameters: "
258 "muxer-comp-addr=%p", muxer_comp);
259 goto error;
260 }
261
262 ret = bt_value_map_extend(default_params, params, &real_params);
263 if (ret) {
264 BT_LOGE("Cannot extend default parameters map value: "
265 "muxer-comp-addr=%p, def-params-addr=%p, "
266 "params-addr=%p", muxer_comp, default_params,
267 params);
268 goto error;
269 }
270
271 assume_absolute_clock_classes = bt_value_map_borrow_entry_value(real_params,
272 ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME);
273 if (assume_absolute_clock_classes &&
274 !bt_value_is_bool(assume_absolute_clock_classes)) {
275 BT_LOGE("Expecting a boolean value for the `%s` parameter: "
276 "muxer-comp-addr=%p, value-type=%s",
277 ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME, muxer_comp,
278 bt_common_value_type_string(
279 bt_value_get_type(assume_absolute_clock_classes)));
280 goto error;
281 }
282
283 bool_val = bt_value_bool_get(assume_absolute_clock_classes);
284 muxer_comp->assume_absolute_clock_classes = (bool) bool_val;
285 BT_LOGD("Configured muxer component: muxer-comp-addr=%p, "
286 "assume-absolute-clock-classes=%d",
287 muxer_comp, muxer_comp->assume_absolute_clock_classes);
288 goto end;
289
290 error:
291 ret = -1;
292
293 end:
294 bt_value_put_ref(default_params);
295 bt_value_put_ref(real_params);
296 return ret;
297 }
298
299 BT_HIDDEN
300 bt_self_component_status muxer_init(
301 bt_self_component_filter *self_comp,
302 const bt_value *params, void *init_data)
303 {
304 int ret;
305 bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
306 struct muxer_comp *muxer_comp = g_new0(struct muxer_comp, 1);
307
308 BT_LOGD("Initializing muxer component: "
309 "comp-addr=%p, params-addr=%p", self_comp, params);
310
311 if (!muxer_comp) {
312 BT_LOGE_STR("Failed to allocate one muxer component.");
313 goto error;
314 }
315
316 ret = configure_muxer_comp(muxer_comp, params);
317 if (ret) {
318 BT_LOGE("Cannot configure muxer component: "
319 "muxer-comp-addr=%p, params-addr=%p",
320 muxer_comp, params);
321 goto error;
322 }
323
324 muxer_comp->self_comp = self_comp;
325 bt_self_component_set_data(
326 bt_self_component_filter_as_self_component(self_comp),
327 muxer_comp);
328 status = add_available_input_port(self_comp);
329 if (status != BT_SELF_COMPONENT_STATUS_OK) {
330 BT_LOGE("Cannot ensure that at least one muxer component's input port is available: "
331 "muxer-comp-addr=%p, status=%s",
332 muxer_comp,
333 bt_self_component_status_string(status));
334 goto error;
335 }
336
337 status = create_output_port(self_comp);
338 if (status) {
339 BT_LOGE("Cannot create muxer component's output port: "
340 "muxer-comp-addr=%p, status=%s",
341 muxer_comp,
342 bt_self_component_status_string(status));
343 goto error;
344 }
345
346 BT_LOGD("Initialized muxer component: "
347 "comp-addr=%p, params-addr=%p, muxer-comp-addr=%p",
348 self_comp, params, muxer_comp);
349
350 goto end;
351
352 error:
353 destroy_muxer_comp(muxer_comp);
354 bt_self_component_set_data(
355 bt_self_component_filter_as_self_component(self_comp),
356 NULL);
357
358 if (status == BT_SELF_COMPONENT_STATUS_OK) {
359 status = BT_SELF_COMPONENT_STATUS_ERROR;
360 }
361
362 end:
363 return status;
364 }
365
366 BT_HIDDEN
367 void muxer_finalize(bt_self_component_filter *self_comp)
368 {
369 struct muxer_comp *muxer_comp = bt_self_component_get_data(
370 bt_self_component_filter_as_self_component(self_comp));
371
372 BT_LOGD("Finalizing muxer component: comp-addr=%p",
373 self_comp);
374 destroy_muxer_comp(muxer_comp);
375 }
376
377 static
378 bt_self_component_port_input_message_iterator *
379 create_msg_iter_on_input_port(bt_self_component_port_input *self_port)
380 {
381 const bt_port *port = bt_self_component_port_as_port(
382 bt_self_component_port_input_as_self_component_port(
383 self_port));
384 bt_self_component_port_input_message_iterator *msg_iter =
385 NULL;
386
387 BT_ASSERT(port);
388 BT_ASSERT(bt_port_is_connected(port));
389
390 // TODO: Advance the iterator to >= the time of the latest
391 // returned message by the muxer message
392 // iterator which creates it.
393 msg_iter = bt_self_component_port_input_message_iterator_create(
394 self_port);
395 if (!msg_iter) {
396 BT_LOGE("Cannot create upstream message iterator on input port: "
397 "port-addr=%p, port-name=\"%s\"",
398 port, bt_port_get_name(port));
399 goto end;
400 }
401
402 BT_LOGD("Created upstream message iterator on input port: "
403 "port-addr=%p, port-name=\"%s\", msg-iter-addr=%p",
404 port, bt_port_get_name(port), msg_iter);
405
406 end:
407 return msg_iter;
408 }
409
410 static
411 bt_self_message_iterator_status muxer_upstream_msg_iter_next(
412 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter)
413 {
414 bt_self_message_iterator_status status;
415 bt_message_iterator_status input_port_iter_status;
416 bt_message_array_const msgs;
417 uint64_t i;
418 uint64_t count;
419
420 BT_LOGV("Calling upstream message iterator's \"next\" method: "
421 "muxer-upstream-msg-iter-wrap-addr=%p, msg-iter-addr=%p",
422 muxer_upstream_msg_iter,
423 muxer_upstream_msg_iter->msg_iter);
424 input_port_iter_status = bt_self_component_port_input_message_iterator_next(
425 muxer_upstream_msg_iter->msg_iter, &msgs, &count);
426 BT_LOGV("Upstream message iterator's \"next\" method returned: "
427 "status=%s", bt_message_iterator_status_string(input_port_iter_status));
428
429 switch (input_port_iter_status) {
430 case BT_MESSAGE_ITERATOR_STATUS_OK:
431 /*
432 * Message iterator's current message is
433 * valid: it must be considered for muxing operations.
434 */
435 BT_LOGV_STR("Validated upstream message iterator wrapper.");
436 BT_ASSERT(count > 0);
437
438 /* Move messages to our queue */
439 for (i = 0; i < count; i++) {
440 /*
441 * Push to tail in order; other side
442 * (muxer_msg_iter_do_next_one()) consumes
443 * from the head first.
444 */
445 g_queue_push_tail(muxer_upstream_msg_iter->msgs,
446 (void *) msgs[i]);
447 }
448 status = BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
449 break;
450 case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
451 /*
452 * Message iterator's current message is not
453 * valid anymore. Return
454 * BT_MESSAGE_ITERATOR_STATUS_AGAIN immediately.
455 */
456 status = BT_SELF_MESSAGE_ITERATOR_STATUS_AGAIN;
457 break;
458 case BT_MESSAGE_ITERATOR_STATUS_END: /* Fall-through. */
459 /*
460 * Message iterator reached the end: release it. It
461 * won't be considered again to find the youngest
462 * message.
463 */
464 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_PUT_REF_AND_RESET(muxer_upstream_msg_iter->msg_iter);
465 status = BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
466 break;
467 default:
468 /* Error or unsupported status code */
469 BT_LOGE("Error or unsupported status code: "
470 "status-code=%d", input_port_iter_status);
471 status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
472 break;
473 }
474
475 return status;
476 }
477
478 static
479 int get_msg_ts_ns(struct muxer_comp *muxer_comp,
480 struct muxer_msg_iter *muxer_msg_iter,
481 const bt_message *msg, int64_t last_returned_ts_ns,
482 int64_t *ts_ns)
483 {
484 const bt_clock_class *clock_class = NULL;
485 const bt_clock_snapshot *clock_snapshot = NULL;
486 int ret = 0;
487 const unsigned char *cc_uuid;
488 const char *cc_name;
489 bt_clock_snapshot_state cs_state = BT_CLOCK_SNAPSHOT_STATE_KNOWN;
490 bt_message_stream_activity_clock_snapshot_state sa_cs_state;
491
492 BT_ASSERT(msg);
493 BT_ASSERT(ts_ns);
494
495 BT_LOGV("Getting message's timestamp: "
496 "muxer-msg-iter-addr=%p, msg-addr=%p, "
497 "last-returned-ts=%" PRId64,
498 muxer_msg_iter, msg, last_returned_ts_ns);
499
500 switch (bt_message_get_type(msg)) {
501 case BT_MESSAGE_TYPE_EVENT:
502 clock_class =
503 bt_message_event_borrow_stream_class_default_clock_class_const(
504 msg);
505 if (!clock_class) {
506 goto no_clock_snapshot;
507 }
508
509 cs_state = bt_message_event_borrow_default_clock_snapshot_const(
510 msg, &clock_snapshot);
511 break;
512 case BT_MESSAGE_TYPE_PACKET_BEGINNING:
513 bt_message_packet_beginning_borrow_stream_class_default_clock_class_const(
514 msg);
515 if (!clock_class) {
516 goto no_clock_snapshot;
517 }
518
519 cs_state = bt_message_packet_beginning_borrow_default_clock_snapshot_const(
520 msg, &clock_snapshot);
521 break;
522 case BT_MESSAGE_TYPE_PACKET_END:
523 bt_message_packet_end_borrow_stream_class_default_clock_class_const(
524 msg);
525 if (!clock_class) {
526 goto no_clock_snapshot;
527 }
528
529 cs_state = bt_message_packet_end_borrow_default_clock_snapshot_const(
530 msg, &clock_snapshot);
531 break;
532 case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
533 bt_message_discarded_events_borrow_stream_class_default_clock_class_const(
534 msg);
535 if (!clock_class) {
536 goto no_clock_snapshot;
537 }
538
539 cs_state = bt_message_discarded_events_borrow_default_beginning_clock_snapshot_const(
540 msg, &clock_snapshot);
541 break;
542 case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
543 bt_message_discarded_packets_borrow_stream_class_default_clock_class_const(
544 msg);
545 if (!clock_class) {
546 goto no_clock_snapshot;
547 }
548
549 cs_state = bt_message_discarded_packets_borrow_default_beginning_clock_snapshot_const(
550 msg, &clock_snapshot);
551 break;
552 case BT_MESSAGE_TYPE_STREAM_ACTIVITY_BEGINNING:
553 bt_message_stream_activity_beginning_borrow_stream_class_default_clock_class_const(
554 msg);
555 if (!clock_class) {
556 goto no_clock_snapshot;
557 }
558
559 sa_cs_state = bt_message_stream_activity_beginning_borrow_default_clock_snapshot_const(
560 msg, &clock_snapshot);
561 if (sa_cs_state != BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN) {
562 goto no_clock_snapshot;
563 }
564
565 break;
566 case BT_MESSAGE_TYPE_STREAM_ACTIVITY_END:
567 bt_message_stream_activity_end_borrow_stream_class_default_clock_class_const(
568 msg);
569 if (!clock_class) {
570 goto no_clock_snapshot;
571 }
572
573 sa_cs_state = bt_message_stream_activity_end_borrow_default_clock_snapshot_const(
574 msg, &clock_snapshot);
575 if (sa_cs_state != BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN) {
576 goto no_clock_snapshot;
577 }
578
579 break;
580 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
581 cs_state =
582 bt_message_message_iterator_inactivity_borrow_default_clock_snapshot_const(
583 msg, &clock_snapshot);
584 break;
585 default:
586 /* All the other messages have a higher priority */
587 BT_LOGV_STR("Message has no timestamp: using the last returned timestamp.");
588 *ts_ns = last_returned_ts_ns;
589 goto end;
590 }
591
592 if (cs_state != BT_CLOCK_SNAPSHOT_STATE_KNOWN) {
593 BT_LOGE_STR("Unsupported unknown clock snapshot.");
594 ret = -1;
595 goto end;
596 }
597
598 clock_class = bt_clock_snapshot_borrow_clock_class_const(clock_snapshot);
599 BT_ASSERT(clock_class);
600 cc_uuid = bt_clock_class_get_uuid(clock_class);
601 cc_name = bt_clock_class_get_name(clock_class);
602
603 if (muxer_msg_iter->clock_class_expectation ==
604 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_ANY) {
605 /*
606 * This is the first clock class that this muxer
607 * message iterator encounters. Its properties
608 * determine what to expect for the whole lifetime of
609 * the iterator without a true
610 * `assume-absolute-clock-classes` parameter.
611 */
612 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
613 /* Expect absolute clock classes */
614 muxer_msg_iter->clock_class_expectation =
615 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE;
616 } else {
617 if (cc_uuid) {
618 /*
619 * Expect non-absolute clock classes
620 * with a specific UUID.
621 */
622 muxer_msg_iter->clock_class_expectation =
623 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID;
624 memcpy(muxer_msg_iter->expected_clock_class_uuid,
625 cc_uuid, BABELTRACE_UUID_LEN);
626 } else {
627 /*
628 * Expect non-absolute clock classes
629 * with no UUID.
630 */
631 muxer_msg_iter->clock_class_expectation =
632 MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID;
633 }
634 }
635 }
636
637 if (!muxer_comp->assume_absolute_clock_classes) {
638 switch (muxer_msg_iter->clock_class_expectation) {
639 case MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_ABSOLUTE:
640 if (!bt_clock_class_origin_is_unix_epoch(clock_class)) {
641 BT_LOGE("Expecting an absolute clock class, "
642 "but got a non-absolute one: "
643 "clock-class-addr=%p, clock-class-name=\"%s\"",
644 clock_class, cc_name);
645 goto error;
646 }
647 break;
648 case MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_NO_UUID:
649 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
650 BT_LOGE("Expecting a non-absolute clock class with no UUID, "
651 "but got an absolute one: "
652 "clock-class-addr=%p, clock-class-name=\"%s\"",
653 clock_class, cc_name);
654 goto error;
655 }
656
657 if (cc_uuid) {
658 BT_LOGE("Expecting a non-absolute clock class with no UUID, "
659 "but got one with a UUID: "
660 "clock-class-addr=%p, clock-class-name=\"%s\", "
661 "uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\"",
662 clock_class, cc_name,
663 (unsigned int) cc_uuid[0],
664 (unsigned int) cc_uuid[1],
665 (unsigned int) cc_uuid[2],
666 (unsigned int) cc_uuid[3],
667 (unsigned int) cc_uuid[4],
668 (unsigned int) cc_uuid[5],
669 (unsigned int) cc_uuid[6],
670 (unsigned int) cc_uuid[7],
671 (unsigned int) cc_uuid[8],
672 (unsigned int) cc_uuid[9],
673 (unsigned int) cc_uuid[10],
674 (unsigned int) cc_uuid[11],
675 (unsigned int) cc_uuid[12],
676 (unsigned int) cc_uuid[13],
677 (unsigned int) cc_uuid[14],
678 (unsigned int) cc_uuid[15]);
679 goto error;
680 }
681 break;
682 case MUXER_MSG_ITER_CLOCK_CLASS_EXPECTATION_NOT_ABS_SPEC_UUID:
683 if (bt_clock_class_origin_is_unix_epoch(clock_class)) {
684 BT_LOGE("Expecting a non-absolute clock class with a specific UUID, "
685 "but got an absolute one: "
686 "clock-class-addr=%p, clock-class-name=\"%s\"",
687 clock_class, cc_name);
688 goto error;
689 }
690
691 if (!cc_uuid) {
692 BT_LOGE("Expecting a non-absolute clock class with a specific UUID, "
693 "but got one with no UUID: "
694 "clock-class-addr=%p, clock-class-name=\"%s\"",
695 clock_class, cc_name);
696 goto error;
697 }
698
699 if (memcmp(muxer_msg_iter->expected_clock_class_uuid,
700 cc_uuid, BABELTRACE_UUID_LEN) != 0) {
701 BT_LOGE("Expecting a non-absolute clock class with a specific UUID, "
702 "but got one with different UUID: "
703 "clock-class-addr=%p, clock-class-name=\"%s\", "
704 "expected-uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\", "
705 "uuid=\"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\"",
706 clock_class, cc_name,
707 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[0],
708 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[1],
709 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[2],
710 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[3],
711 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[4],
712 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[5],
713 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[6],
714 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[7],
715 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[8],
716 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[9],
717 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[10],
718 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[11],
719 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[12],
720 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[13],
721 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[14],
722 (unsigned int) muxer_msg_iter->expected_clock_class_uuid[15],
723 (unsigned int) cc_uuid[0],
724 (unsigned int) cc_uuid[1],
725 (unsigned int) cc_uuid[2],
726 (unsigned int) cc_uuid[3],
727 (unsigned int) cc_uuid[4],
728 (unsigned int) cc_uuid[5],
729 (unsigned int) cc_uuid[6],
730 (unsigned int) cc_uuid[7],
731 (unsigned int) cc_uuid[8],
732 (unsigned int) cc_uuid[9],
733 (unsigned int) cc_uuid[10],
734 (unsigned int) cc_uuid[11],
735 (unsigned int) cc_uuid[12],
736 (unsigned int) cc_uuid[13],
737 (unsigned int) cc_uuid[14],
738 (unsigned int) cc_uuid[15]);
739 goto error;
740 }
741 break;
742 default:
743 /* Unexpected */
744 BT_LOGF("Unexpected clock class expectation: "
745 "expectation-code=%d",
746 muxer_msg_iter->clock_class_expectation);
747 abort();
748 }
749 }
750
751 ret = bt_clock_snapshot_get_ns_from_origin(clock_snapshot, ts_ns);
752 if (ret) {
753 BT_LOGE("Cannot get nanoseconds from Epoch of clock snapshot: "
754 "clock-snapshot-addr=%p", clock_snapshot);
755 goto error;
756 }
757
758 goto end;
759
760 no_clock_snapshot:
761 BT_LOGV_STR("Message's default clock snapshot is missing: "
762 "using the last returned timestamp.");
763 *ts_ns = last_returned_ts_ns;
764 goto end;
765
766 error:
767 ret = -1;
768
769 end:
770 if (ret == 0) {
771 BT_LOGV("Found message's timestamp: "
772 "muxer-msg-iter-addr=%p, msg-addr=%p, "
773 "last-returned-ts=%" PRId64 ", ts=%" PRId64,
774 muxer_msg_iter, msg, last_returned_ts_ns,
775 *ts_ns);
776 }
777
778 return ret;
779 }
780
781 /*
782 * This function finds the youngest available message amongst the
783 * non-ended upstream message iterators and returns the upstream
784 * message iterator which has it, or
785 * BT_MESSAGE_ITERATOR_STATUS_END if there's no available
786 * message.
787 *
788 * This function does NOT:
789 *
790 * * Update any upstream message iterator.
791 * * Check the upstream message iterators to retry.
792 *
793 * On sucess, this function sets *muxer_upstream_msg_iter to the
794 * upstream message iterator of which the current message is
795 * the youngest, and sets *ts_ns to its time.
796 */
797 static
798 bt_self_message_iterator_status
799 muxer_msg_iter_youngest_upstream_msg_iter(
800 struct muxer_comp *muxer_comp,
801 struct muxer_msg_iter *muxer_msg_iter,
802 struct muxer_upstream_msg_iter **muxer_upstream_msg_iter,
803 int64_t *ts_ns)
804 {
805 size_t i;
806 int ret;
807 int64_t youngest_ts_ns = INT64_MAX;
808 bt_self_message_iterator_status status =
809 BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
810
811 BT_ASSERT(muxer_comp);
812 BT_ASSERT(muxer_msg_iter);
813 BT_ASSERT(muxer_upstream_msg_iter);
814 *muxer_upstream_msg_iter = NULL;
815
816 for (i = 0; i < muxer_msg_iter->muxer_upstream_msg_iters->len; i++) {
817 const bt_message *msg;
818 struct muxer_upstream_msg_iter *cur_muxer_upstream_msg_iter =
819 g_ptr_array_index(muxer_msg_iter->muxer_upstream_msg_iters, i);
820 int64_t msg_ts_ns;
821
822 if (!cur_muxer_upstream_msg_iter->msg_iter) {
823 /* This upstream message iterator is ended */
824 BT_LOGV("Skipping ended upstream message iterator: "
825 "muxer-upstream-msg-iter-wrap-addr=%p",
826 cur_muxer_upstream_msg_iter);
827 continue;
828 }
829
830 BT_ASSERT(cur_muxer_upstream_msg_iter->msgs->length > 0);
831 msg = g_queue_peek_head(cur_muxer_upstream_msg_iter->msgs);
832 BT_ASSERT(msg);
833 ret = get_msg_ts_ns(muxer_comp, muxer_msg_iter, msg,
834 muxer_msg_iter->last_returned_ts_ns, &msg_ts_ns);
835 if (ret) {
836 /* get_msg_ts_ns() logs errors */
837 *muxer_upstream_msg_iter = NULL;
838 status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
839 goto end;
840 }
841
842 if (msg_ts_ns <= youngest_ts_ns) {
843 *muxer_upstream_msg_iter =
844 cur_muxer_upstream_msg_iter;
845 youngest_ts_ns = msg_ts_ns;
846 *ts_ns = youngest_ts_ns;
847 }
848 }
849
850 if (!*muxer_upstream_msg_iter) {
851 status = BT_SELF_MESSAGE_ITERATOR_STATUS_END;
852 *ts_ns = INT64_MIN;
853 }
854
855 end:
856 return status;
857 }
858
859 static
860 bt_self_message_iterator_status validate_muxer_upstream_msg_iter(
861 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter)
862 {
863 bt_self_message_iterator_status status =
864 BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
865
866 BT_LOGV("Validating muxer's upstream message iterator wrapper: "
867 "muxer-upstream-msg-iter-wrap-addr=%p",
868 muxer_upstream_msg_iter);
869
870 if (muxer_upstream_msg_iter->msgs->length > 0 ||
871 !muxer_upstream_msg_iter->msg_iter) {
872 BT_LOGV("Already valid or not considered: "
873 "queue-len=%u, upstream-msg-iter-addr=%p",
874 muxer_upstream_msg_iter->msgs->length,
875 muxer_upstream_msg_iter->msg_iter);
876 goto end;
877 }
878
879 /* muxer_upstream_msg_iter_next() logs details/errors */
880 status = muxer_upstream_msg_iter_next(muxer_upstream_msg_iter);
881
882 end:
883 return status;
884 }
885
886 static
887 bt_self_message_iterator_status validate_muxer_upstream_msg_iters(
888 struct muxer_msg_iter *muxer_msg_iter)
889 {
890 bt_self_message_iterator_status status =
891 BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
892 size_t i;
893
894 BT_LOGV("Validating muxer's upstream message iterator wrappers: "
895 "muxer-msg-iter-addr=%p", muxer_msg_iter);
896
897 for (i = 0; i < muxer_msg_iter->muxer_upstream_msg_iters->len; i++) {
898 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter =
899 g_ptr_array_index(
900 muxer_msg_iter->muxer_upstream_msg_iters,
901 i);
902
903 status = validate_muxer_upstream_msg_iter(
904 muxer_upstream_msg_iter);
905 if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
906 if (status < 0) {
907 BT_LOGE("Cannot validate muxer's upstream message iterator wrapper: "
908 "muxer-msg-iter-addr=%p, "
909 "muxer-upstream-msg-iter-wrap-addr=%p",
910 muxer_msg_iter,
911 muxer_upstream_msg_iter);
912 } else {
913 BT_LOGV("Cannot validate muxer's upstream message iterator wrapper: "
914 "muxer-msg-iter-addr=%p, "
915 "muxer-upstream-msg-iter-wrap-addr=%p",
916 muxer_msg_iter,
917 muxer_upstream_msg_iter);
918 }
919
920 goto end;
921 }
922
923 /*
924 * Remove this muxer upstream message iterator
925 * if it's ended or canceled.
926 */
927 if (!muxer_upstream_msg_iter->msg_iter) {
928 /*
929 * Use g_ptr_array_remove_fast() because the
930 * order of those elements is not important.
931 */
932 BT_LOGV("Removing muxer's upstream message iterator wrapper: ended or canceled: "
933 "muxer-msg-iter-addr=%p, "
934 "muxer-upstream-msg-iter-wrap-addr=%p",
935 muxer_msg_iter, muxer_upstream_msg_iter);
936 g_ptr_array_remove_index_fast(
937 muxer_msg_iter->muxer_upstream_msg_iters,
938 i);
939 i--;
940 }
941 }
942
943 end:
944 return status;
945 }
946
947 static inline
948 bt_self_message_iterator_status muxer_msg_iter_do_next_one(
949 struct muxer_comp *muxer_comp,
950 struct muxer_msg_iter *muxer_msg_iter,
951 const bt_message **msg)
952 {
953 bt_self_message_iterator_status status;
954 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter = NULL;
955 int64_t next_return_ts;
956
957 status = validate_muxer_upstream_msg_iters(muxer_msg_iter);
958 if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
959 /* validate_muxer_upstream_msg_iters() logs details */
960 goto end;
961 }
962
963 /*
964 * At this point we know that all the existing upstream
965 * message iterators are valid. We can find the one,
966 * amongst those, of which the current message is the
967 * youngest.
968 */
969 status = muxer_msg_iter_youngest_upstream_msg_iter(muxer_comp,
970 muxer_msg_iter, &muxer_upstream_msg_iter,
971 &next_return_ts);
972 if (status < 0 || status == BT_SELF_MESSAGE_ITERATOR_STATUS_END) {
973 if (status < 0) {
974 BT_LOGE("Cannot find the youngest upstream message iterator wrapper: "
975 "status=%s",
976 bt_self_message_iterator_status_string(status));
977 } else {
978 BT_LOGV("Cannot find the youngest upstream message iterator wrapper: "
979 "status=%s",
980 bt_self_message_iterator_status_string(status));
981 }
982
983 goto end;
984 }
985
986 if (next_return_ts < muxer_msg_iter->last_returned_ts_ns) {
987 BT_LOGE("Youngest upstream message iterator wrapper's timestamp is less than muxer's message iterator's last returned timestamp: "
988 "muxer-msg-iter-addr=%p, ts=%" PRId64 ", "
989 "last-returned-ts=%" PRId64,
990 muxer_msg_iter, next_return_ts,
991 muxer_msg_iter->last_returned_ts_ns);
992 status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
993 goto end;
994 }
995
996 BT_LOGV("Found youngest upstream message iterator wrapper: "
997 "muxer-msg-iter-addr=%p, "
998 "muxer-upstream-msg-iter-wrap-addr=%p, "
999 "ts=%" PRId64,
1000 muxer_msg_iter, muxer_upstream_msg_iter, next_return_ts);
1001 BT_ASSERT(status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK);
1002 BT_ASSERT(muxer_upstream_msg_iter);
1003
1004 /*
1005 * Consume from the queue's head: other side
1006 * (muxer_upstream_msg_iter_next()) writes to the tail.
1007 */
1008 *msg = g_queue_pop_head(muxer_upstream_msg_iter->msgs);
1009 BT_ASSERT(*msg);
1010 muxer_msg_iter->last_returned_ts_ns = next_return_ts;
1011
1012 end:
1013 return status;
1014 }
1015
1016 static
1017 bt_self_message_iterator_status muxer_msg_iter_do_next(
1018 struct muxer_comp *muxer_comp,
1019 struct muxer_msg_iter *muxer_msg_iter,
1020 bt_message_array_const msgs, uint64_t capacity,
1021 uint64_t *count)
1022 {
1023 bt_self_message_iterator_status status =
1024 BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
1025 uint64_t i = 0;
1026
1027 while (i < capacity && status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
1028 status = muxer_msg_iter_do_next_one(muxer_comp,
1029 muxer_msg_iter, &msgs[i]);
1030 if (status == BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
1031 i++;
1032 }
1033 }
1034
1035 if (i > 0) {
1036 /*
1037 * Even if muxer_msg_iter_do_next_one() returned
1038 * something else than
1039 * BT_MESSAGE_ITERATOR_STATUS_OK, we accumulated
1040 * message objects in the output message
1041 * array, so we need to return
1042 * BT_MESSAGE_ITERATOR_STATUS_OK so that they are
1043 * transfered to downstream. This other status occurs
1044 * again the next time muxer_msg_iter_do_next() is
1045 * called, possibly without any accumulated
1046 * message, in which case we'll return it.
1047 */
1048 *count = i;
1049 status = BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
1050 }
1051
1052 return status;
1053 }
1054
1055 static
1056 void destroy_muxer_msg_iter(struct muxer_msg_iter *muxer_msg_iter)
1057 {
1058 if (!muxer_msg_iter) {
1059 return;
1060 }
1061
1062 BT_LOGD("Destroying muxer component's message iterator: "
1063 "muxer-msg-iter-addr=%p", muxer_msg_iter);
1064
1065 if (muxer_msg_iter->muxer_upstream_msg_iters) {
1066 BT_LOGD_STR("Destroying muxer's upstream message iterator wrappers.");
1067 g_ptr_array_free(
1068 muxer_msg_iter->muxer_upstream_msg_iters, TRUE);
1069 }
1070
1071 g_free(muxer_msg_iter);
1072 }
1073
1074 static
1075 int muxer_msg_iter_init_upstream_iterators(struct muxer_comp *muxer_comp,
1076 struct muxer_msg_iter *muxer_msg_iter)
1077 {
1078 int64_t count;
1079 int64_t i;
1080 int ret = 0;
1081
1082 count = bt_component_filter_get_input_port_count(
1083 bt_self_component_filter_as_component_filter(
1084 muxer_comp->self_comp));
1085 if (count < 0) {
1086 BT_LOGD("No input port to initialize for muxer component's message iterator: "
1087 "muxer-comp-addr=%p, muxer-msg-iter-addr=%p",
1088 muxer_comp, muxer_msg_iter);
1089 goto end;
1090 }
1091
1092 for (i = 0; i < count; i++) {
1093 bt_self_component_port_input_message_iterator *upstream_msg_iter;
1094 struct muxer_upstream_msg_iter *muxer_upstream_msg_iter;
1095 bt_self_component_port_input *self_port =
1096 bt_self_component_filter_borrow_input_port_by_index(
1097 muxer_comp->self_comp, i);
1098 const bt_port *port;
1099
1100 BT_ASSERT(self_port);
1101 port = bt_self_component_port_as_port(
1102 bt_self_component_port_input_as_self_component_port(
1103 self_port));
1104 BT_ASSERT(port);
1105
1106 if (!bt_port_is_connected(port)) {
1107 /* Skip non-connected port */
1108 continue;
1109 }
1110
1111 upstream_msg_iter = create_msg_iter_on_input_port(self_port);
1112 if (!upstream_msg_iter) {
1113 /* create_msg_iter_on_input_port() logs errors */
1114 BT_ASSERT(!upstream_msg_iter);
1115 ret = -1;
1116 goto end;
1117 }
1118
1119 muxer_upstream_msg_iter =
1120 muxer_msg_iter_add_upstream_msg_iter(
1121 muxer_msg_iter, upstream_msg_iter);
1122 bt_self_component_port_input_message_iterator_put_ref(
1123 upstream_msg_iter);
1124 if (!muxer_upstream_msg_iter) {
1125 /* muxer_msg_iter_add_upstream_msg_iter() logs errors */
1126 ret = -1;
1127 goto end;
1128 }
1129 }
1130
1131 end:
1132 return ret;
1133 }
1134
1135 BT_HIDDEN
1136 bt_self_message_iterator_status muxer_msg_iter_init(
1137 bt_self_message_iterator *self_msg_iter,
1138 bt_self_component_filter *self_comp,
1139 bt_self_component_port_output *port)
1140 {
1141 struct muxer_comp *muxer_comp = NULL;
1142 struct muxer_msg_iter *muxer_msg_iter = NULL;
1143 bt_self_message_iterator_status status =
1144 BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
1145 int ret;
1146
1147 muxer_comp = bt_self_component_get_data(
1148 bt_self_component_filter_as_self_component(self_comp));
1149 BT_ASSERT(muxer_comp);
1150 BT_LOGD("Initializing muxer component's message iterator: "
1151 "comp-addr=%p, muxer-comp-addr=%p, msg-iter-addr=%p",
1152 self_comp, muxer_comp, self_msg_iter);
1153
1154 if (muxer_comp->initializing_muxer_msg_iter) {
1155 /*
1156 * Weird, unhandled situation detected: downstream
1157 * creates a muxer message iterator while creating
1158 * another muxer message iterator (same component).
1159 */
1160 BT_LOGE("Recursive initialization of muxer component's message iterator: "
1161 "comp-addr=%p, muxer-comp-addr=%p, msg-iter-addr=%p",
1162 self_comp, muxer_comp, self_msg_iter);
1163 goto error;
1164 }
1165
1166 muxer_comp->initializing_muxer_msg_iter = true;
1167 muxer_msg_iter = g_new0(struct muxer_msg_iter, 1);
1168 if (!muxer_msg_iter) {
1169 BT_LOGE_STR("Failed to allocate one muxer component's message iterator.");
1170 goto error;
1171 }
1172
1173 muxer_msg_iter->last_returned_ts_ns = INT64_MIN;
1174 muxer_msg_iter->muxer_upstream_msg_iters =
1175 g_ptr_array_new_with_free_func(
1176 (GDestroyNotify) destroy_muxer_upstream_msg_iter);
1177 if (!muxer_msg_iter->muxer_upstream_msg_iters) {
1178 BT_LOGE_STR("Failed to allocate a GPtrArray.");
1179 goto error;
1180 }
1181
1182 ret = muxer_msg_iter_init_upstream_iterators(muxer_comp,
1183 muxer_msg_iter);
1184 if (ret) {
1185 BT_LOGE("Cannot initialize connected input ports for muxer component's message iterator: "
1186 "comp-addr=%p, muxer-comp-addr=%p, "
1187 "muxer-msg-iter-addr=%p, msg-iter-addr=%p, ret=%d",
1188 self_comp, muxer_comp, muxer_msg_iter,
1189 self_msg_iter, ret);
1190 goto error;
1191 }
1192
1193 bt_self_message_iterator_set_data(self_msg_iter, muxer_msg_iter);
1194 BT_LOGD("Initialized muxer component's message iterator: "
1195 "comp-addr=%p, muxer-comp-addr=%p, muxer-msg-iter-addr=%p, "
1196 "msg-iter-addr=%p",
1197 self_comp, muxer_comp, muxer_msg_iter, self_msg_iter);
1198 goto end;
1199
1200 error:
1201 destroy_muxer_msg_iter(muxer_msg_iter);
1202 bt_self_message_iterator_set_data(self_msg_iter, NULL);
1203 status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
1204
1205 end:
1206 muxer_comp->initializing_muxer_msg_iter = false;
1207 return status;
1208 }
1209
1210 BT_HIDDEN
1211 void muxer_msg_iter_finalize(
1212 bt_self_message_iterator *self_msg_iter)
1213 {
1214 struct muxer_msg_iter *muxer_msg_iter =
1215 bt_self_message_iterator_get_data(self_msg_iter);
1216 bt_self_component *self_comp = NULL;
1217 struct muxer_comp *muxer_comp = NULL;
1218
1219 self_comp = bt_self_message_iterator_borrow_component(
1220 self_msg_iter);
1221 BT_ASSERT(self_comp);
1222 muxer_comp = bt_self_component_get_data(self_comp);
1223 BT_LOGD("Finalizing muxer component's message iterator: "
1224 "comp-addr=%p, muxer-comp-addr=%p, muxer-msg-iter-addr=%p, "
1225 "msg-iter-addr=%p",
1226 self_comp, muxer_comp, muxer_msg_iter, self_msg_iter);
1227
1228 if (muxer_msg_iter) {
1229 destroy_muxer_msg_iter(muxer_msg_iter);
1230 }
1231 }
1232
1233 BT_HIDDEN
1234 bt_self_message_iterator_status muxer_msg_iter_next(
1235 bt_self_message_iterator *self_msg_iter,
1236 bt_message_array_const msgs, uint64_t capacity,
1237 uint64_t *count)
1238 {
1239 bt_self_message_iterator_status status;
1240 struct muxer_msg_iter *muxer_msg_iter =
1241 bt_self_message_iterator_get_data(self_msg_iter);
1242 bt_self_component *self_comp = NULL;
1243 struct muxer_comp *muxer_comp = NULL;
1244
1245 BT_ASSERT(muxer_msg_iter);
1246 self_comp = bt_self_message_iterator_borrow_component(
1247 self_msg_iter);
1248 BT_ASSERT(self_comp);
1249 muxer_comp = bt_self_component_get_data(self_comp);
1250 BT_ASSERT(muxer_comp);
1251 BT_LOGV("Muxer component's message iterator's \"next\" method called: "
1252 "comp-addr=%p, muxer-comp-addr=%p, muxer-msg-iter-addr=%p, "
1253 "msg-iter-addr=%p",
1254 self_comp, muxer_comp, muxer_msg_iter, self_msg_iter);
1255
1256 status = muxer_msg_iter_do_next(muxer_comp, muxer_msg_iter,
1257 msgs, capacity, count);
1258 if (status < 0) {
1259 BT_LOGE("Cannot get next message: "
1260 "comp-addr=%p, muxer-comp-addr=%p, muxer-msg-iter-addr=%p, "
1261 "msg-iter-addr=%p, status=%s",
1262 self_comp, muxer_comp, muxer_msg_iter, self_msg_iter,
1263 bt_self_message_iterator_status_string(status));
1264 } else {
1265 BT_LOGV("Returning from muxer component's message iterator's \"next\" method: "
1266 "status=%s",
1267 bt_self_message_iterator_status_string(status));
1268 }
1269
1270 return status;
1271 }
1272
1273 BT_HIDDEN
1274 bt_self_component_status muxer_input_port_connected(
1275 bt_self_component_filter *self_comp,
1276 bt_self_component_port_input *self_port,
1277 const bt_port_output *other_port)
1278 {
1279 bt_self_component_status status;
1280
1281 status = add_available_input_port(self_comp);
1282 if (status) {
1283 /*
1284 * Only way to report an error later since this
1285 * method does not return anything.
1286 */
1287 BT_LOGE("Cannot add one muxer component's input port: "
1288 "status=%s",
1289 bt_self_component_status_string(status));
1290 goto end;
1291 }
1292
1293 end:
1294 return status;
1295 }
1296
1297 BT_HIDDEN
1298 bt_bool muxer_msg_iter_can_seek_beginning(
1299 bt_self_message_iterator *self_msg_iter)
1300 {
1301 struct muxer_msg_iter *muxer_msg_iter =
1302 bt_self_message_iterator_get_data(self_msg_iter);
1303 uint64_t i;
1304 bt_bool ret = BT_TRUE;
1305
1306 for (i = 0; i < muxer_msg_iter->muxer_upstream_msg_iters->len; i++) {
1307 struct muxer_upstream_msg_iter *upstream_msg_iter =
1308 muxer_msg_iter->muxer_upstream_msg_iters->pdata[i];
1309
1310 if (!bt_self_component_port_input_message_iterator_can_seek_beginning(
1311 upstream_msg_iter->msg_iter)) {
1312 ret = BT_FALSE;
1313 goto end;
1314 }
1315 }
1316
1317 end:
1318 return ret;
1319 }
1320
1321 BT_HIDDEN
1322 bt_self_message_iterator_status muxer_msg_iter_seek_beginning(
1323 bt_self_message_iterator *self_msg_iter)
1324 {
1325 struct muxer_msg_iter *muxer_msg_iter =
1326 bt_self_message_iterator_get_data(self_msg_iter);
1327 int status;
1328 uint64_t i;
1329
1330 for (i = 0; i < muxer_msg_iter->muxer_upstream_msg_iters->len; i++) {
1331 struct muxer_upstream_msg_iter *upstream_msg_iter =
1332 muxer_msg_iter->muxer_upstream_msg_iters->pdata[i];
1333
1334 status = bt_self_component_port_input_message_iterator_seek_beginning(
1335 upstream_msg_iter->msg_iter);
1336 if (status != BT_MESSAGE_ITERATOR_STATUS_OK) {
1337 goto end;
1338 }
1339 }
1340
1341 muxer_msg_iter->last_returned_ts_ns = INT64_MIN;
1342
1343 end:
1344 return status;
1345 }
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