2 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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
23 #include <babeltrace/babeltrace-internal.h>
24 #include <babeltrace/ctf-ir/clock-class.h>
25 #include <babeltrace/ctf-ir/event.h>
26 #include <babeltrace/graph/clock-class-priority-map.h>
27 #include <babeltrace/graph/component-filter.h>
28 #include <babeltrace/graph/component.h>
29 #include <babeltrace/graph/notification-event.h>
30 #include <babeltrace/graph/notification-inactivity.h>
31 #include <babeltrace/graph/notification-iterator.h>
32 #include <babeltrace/graph/notification.h>
33 #include <babeltrace/graph/port.h>
34 #include <babeltrace/graph/private-component-filter.h>
35 #include <babeltrace/graph/private-component.h>
36 #include <babeltrace/graph/private-component.h>
37 #include <babeltrace/graph/private-connection.h>
38 #include <babeltrace/graph/private-notification-iterator.h>
39 #include <babeltrace/graph/private-port.h>
40 #include <plugins-common.h>
46 #define ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME "assume-absolute-clock-classes"
49 /* Array of struct bt_private_notification_iterator * (weak refs) */
50 GPtrArray
*muxer_notif_iters
;
53 struct bt_private_component
*priv_comp
;
54 unsigned int next_port_num
;
55 size_t available_input_ports
;
57 bool initializing_muxer_notif_iter
;
61 struct muxer_upstream_notif_iter
{
62 /* Owned by this, NULL if ended */
63 struct bt_notification_iterator
*notif_iter
;
66 * This flag is true if the upstream notification iterator's
67 * current notification must be considered for the multiplexing
68 * operations. If the upstream iterator returns
69 * BT_NOTIFICATION_ITERATOR_STATUS_AGAIN, then this object
70 * is considered invalid, because its current notification is
71 * still the previous one, but we already took it into account.
73 * The value of this flag is not important if notif_iter above
74 * is NULL (which means the upstream iterator is finished).
79 struct muxer_notif_iter
{
81 * Array of struct muxer_upstream_notif_iter * (owned by this).
83 * NOTE: This array is searched in linearly to find the youngest
84 * current notification. Keep this until benchmarks confirm that
85 * another data structure is faster than this for our typical
88 GPtrArray
*muxer_upstream_notif_iters
;
91 * List of "recently" connected input ports (weak) to
92 * handle by this muxer notification iterator.
93 * muxer_port_connected() adds entries to this list, and the
94 * entries are removed when a notification iterator is created
95 * on the port's connection and put into
96 * muxer_upstream_notif_iters above by
97 * muxer_notif_iter_handle_newly_connected_ports().
99 GList
*newly_connected_priv_ports
;
101 /* Next thing to return by the "next" method */
102 struct bt_notification_iterator_next_return next_next_return
;
104 /* Last time returned in a notification */
105 int64_t last_returned_ts_ns
;
109 void destroy_muxer_upstream_notif_iter(
110 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
)
112 if (!muxer_upstream_notif_iter
) {
116 bt_put(muxer_upstream_notif_iter
->notif_iter
);
117 g_free(muxer_upstream_notif_iter
);
121 struct muxer_upstream_notif_iter
*muxer_notif_iter_add_upstream_notif_iter(
122 struct muxer_notif_iter
*muxer_notif_iter
,
123 struct bt_notification_iterator
*notif_iter
,
124 struct bt_private_port
*priv_port
)
126 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
=
127 g_new0(struct muxer_upstream_notif_iter
, 1);
129 if (!muxer_upstream_notif_iter
) {
133 muxer_upstream_notif_iter
->notif_iter
= bt_get(notif_iter
);
134 muxer_upstream_notif_iter
->is_valid
= false;
135 g_ptr_array_add(muxer_notif_iter
->muxer_upstream_notif_iters
,
136 muxer_upstream_notif_iter
);
139 return muxer_upstream_notif_iter
;
143 enum bt_component_status
ensure_available_input_port(
144 struct bt_private_component
*priv_comp
)
146 struct muxer_comp
*muxer_comp
=
147 bt_private_component_get_user_data(priv_comp
);
148 enum bt_component_status status
= BT_COMPONENT_STATUS_OK
;
149 GString
*port_name
= NULL
;
153 if (muxer_comp
->available_input_ports
>= 1) {
157 port_name
= g_string_new("in");
159 status
= BT_COMPONENT_STATUS_NOMEM
;
163 g_string_append_printf(port_name
, "%u", muxer_comp
->next_port_num
);
164 status
= bt_private_component_filter_add_input_private_port(
165 priv_comp
, port_name
->str
, NULL
, NULL
);
166 if (status
!= BT_COMPONENT_STATUS_OK
) {
170 muxer_comp
->available_input_ports
++;
171 muxer_comp
->next_port_num
++;
175 g_string_free(port_name
, TRUE
);
182 enum bt_component_status
create_output_port(
183 struct bt_private_component
*priv_comp
)
185 return bt_private_component_filter_add_output_private_port(
186 priv_comp
, "out", NULL
, NULL
);
190 void destroy_muxer_comp(struct muxer_comp
*muxer_comp
)
196 if (muxer_comp
->muxer_notif_iters
) {
197 g_ptr_array_free(muxer_comp
->muxer_notif_iters
, TRUE
);
204 struct bt_value
*get_default_params(void)
206 struct bt_value
*params
;
209 params
= bt_value_map_create();
214 ret
= bt_value_map_insert_bool(params
,
215 ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME
, false);
230 int configure_muxer_comp(struct muxer_comp
*muxer_comp
, struct bt_value
*params
)
232 struct bt_value
*default_params
= NULL
;
233 struct bt_value
*real_params
= NULL
;
234 struct bt_value
*ignore_absolute
= NULL
;
238 default_params
= get_default_params();
239 if (!default_params
) {
243 real_params
= bt_value_map_extend(default_params
, params
);
248 ignore_absolute
= bt_value_map_get(real_params
,
249 ASSUME_ABSOLUTE_CLOCK_CLASSES_PARAM_NAME
);
250 if (!bt_value_is_bool(ignore_absolute
)) {
254 if (bt_value_bool_get(ignore_absolute
, &bool_val
)) {
258 muxer_comp
->ignore_absolute
= (bool) bool_val
;
266 bt_put(default_params
);
268 bt_put(ignore_absolute
);
273 enum bt_component_status
muxer_init(
274 struct bt_private_component
*priv_comp
,
275 struct bt_value
*params
, void *init_data
)
278 enum bt_component_status status
= BT_COMPONENT_STATUS_OK
;
279 struct muxer_comp
*muxer_comp
= g_new0(struct muxer_comp
, 1);
285 ret
= configure_muxer_comp(muxer_comp
, params
);
290 muxer_comp
->muxer_notif_iters
= g_ptr_array_new();
291 if (!muxer_comp
->muxer_notif_iters
) {
295 muxer_comp
->priv_comp
= priv_comp
;
296 ret
= bt_private_component_set_user_data(priv_comp
, muxer_comp
);
298 status
= ensure_available_input_port(priv_comp
);
299 if (status
!= BT_COMPONENT_STATUS_OK
) {
303 ret
= create_output_port(priv_comp
);
311 destroy_muxer_comp(muxer_comp
);
312 ret
= bt_private_component_set_user_data(priv_comp
, NULL
);
315 if (status
== BT_COMPONENT_STATUS_OK
) {
316 status
= BT_COMPONENT_STATUS_ERROR
;
324 void muxer_finalize(struct bt_private_component
*priv_comp
)
326 struct muxer_comp
*muxer_comp
=
327 bt_private_component_get_user_data(priv_comp
);
329 destroy_muxer_comp(muxer_comp
);
333 struct bt_notification_iterator
*create_notif_iter_on_input_port(
334 struct bt_private_port
*priv_port
, int *ret
)
336 struct bt_port
*port
= bt_port_from_private_port(priv_port
);
337 struct bt_notification_iterator
*notif_iter
= NULL
;
338 struct bt_private_connection
*priv_conn
= NULL
;
344 assert(bt_port_is_connected(port
));
345 priv_conn
= bt_private_port_get_private_connection(priv_port
);
351 // TODO: Advance the iterator to >= the time of the latest
352 // returned notification by the muxer notification
353 // iterator which creates it.
354 notif_iter
= bt_private_connection_create_notification_iterator(
368 enum bt_notification_iterator_status
muxer_upstream_notif_iter_next(
369 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
)
371 enum bt_notification_iterator_status status
;
373 status
= bt_notification_iterator_next(
374 muxer_upstream_notif_iter
->notif_iter
);
377 case BT_NOTIFICATION_ITERATOR_STATUS_OK
:
379 * Notification iterator's current notification is valid:
380 * it must be considered for muxing operations.
382 muxer_upstream_notif_iter
->is_valid
= true;
384 case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN
:
386 * Notification iterator's current notification is not
387 * valid anymore. Return
388 * BT_NOTIFICATION_ITERATOR_STATUS_AGAIN
391 muxer_upstream_notif_iter
->is_valid
= false;
393 case BT_NOTIFICATION_ITERATOR_STATUS_END
: /* Fall-through. */
394 case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED
:
396 * Notification iterator reached the end: release it. It
397 * won't be considered again to find the youngest
400 BT_PUT(muxer_upstream_notif_iter
->notif_iter
);
401 muxer_upstream_notif_iter
->is_valid
= false;
402 status
= BT_NOTIFICATION_ITERATOR_STATUS_OK
;
405 /* Error or unsupported status code */
406 status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
414 int muxer_notif_iter_handle_newly_connected_ports(
415 struct muxer_notif_iter
*muxer_notif_iter
)
420 * Here we create one upstream notification iterator for each
421 * newly connected port. We do not perform an initial "next" on
422 * those new upstream notification iterators: they are
423 * invalidated, to be validated later. The list of newly
424 * connected ports to handle here is updated by
425 * muxer_port_connected().
428 GList
*node
= muxer_notif_iter
->newly_connected_priv_ports
;
429 struct bt_private_port
*priv_port
;
430 struct bt_port
*port
;
431 struct bt_notification_iterator
*upstream_notif_iter
= NULL
;
432 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
;
438 priv_port
= node
->data
;
439 port
= bt_port_from_private_port(priv_port
);
442 if (!bt_port_is_connected(port
)) {
444 * Looks like this port is not connected
445 * anymore: we can't create an upstream
446 * notification iterator on its (non-existing)
447 * connection in this case.
453 upstream_notif_iter
= create_notif_iter_on_input_port(priv_port
,
456 assert(!upstream_notif_iter
);
460 muxer_upstream_notif_iter
=
461 muxer_notif_iter_add_upstream_notif_iter(
462 muxer_notif_iter
, upstream_notif_iter
,
464 BT_PUT(upstream_notif_iter
);
465 if (!muxer_upstream_notif_iter
) {
470 bt_put(upstream_notif_iter
);
472 muxer_notif_iter
->newly_connected_priv_ports
=
474 muxer_notif_iter
->newly_connected_priv_ports
,
490 int get_notif_ts_ns(struct muxer_comp
*muxer_comp
,
491 struct bt_notification
*notif
, int64_t last_returned_ts_ns
,
494 struct bt_clock_class_priority_map
*cc_prio_map
= NULL
;
495 struct bt_ctf_clock_class
*clock_class
= NULL
;
496 struct bt_ctf_clock_value
*clock_value
= NULL
;
497 struct bt_ctf_event
*event
= NULL
;
503 switch (bt_notification_get_type(notif
)) {
504 case BT_NOTIFICATION_TYPE_EVENT
:
506 bt_notification_event_get_clock_class_priority_map(
510 case BT_NOTIFICATION_TYPE_INACTIVITY
:
512 bt_notification_inactivity_get_clock_class_priority_map(
516 /* All the other notifications have a higher priority */
517 *ts_ns
= last_returned_ts_ns
;
526 * If the clock class priority map is empty, then we consider
527 * that this notification has no time. In this case it's always
530 if (bt_clock_class_priority_map_get_clock_class_count(cc_prio_map
) == 0) {
531 *ts_ns
= last_returned_ts_ns
;
536 bt_clock_class_priority_map_get_highest_priority_clock_class(
542 if (!muxer_comp
->ignore_absolute
&&
543 !bt_ctf_clock_class_is_absolute(clock_class
)) {
547 switch (bt_notification_get_type(notif
)) {
548 case BT_NOTIFICATION_TYPE_EVENT
:
549 event
= bt_notification_event_get_event(notif
);
551 clock_value
= bt_ctf_event_get_clock_value(event
,
554 case BT_NOTIFICATION_TYPE_INACTIVITY
:
555 clock_value
= bt_notification_inactivity_get_clock_value(
566 ret
= bt_ctf_clock_value_get_value_ns_from_epoch(clock_value
, ts_ns
);
585 * This function finds the youngest available notification amongst the
586 * non-ended upstream notification iterators and returns the upstream
587 * notification iterator which has it, or
588 * BT_NOTIFICATION_ITERATOR_STATUS_END if there's no available
591 * This function does NOT:
593 * * Update any upstream notification iterator.
594 * * Check for newly connected ports.
595 * * Check the upstream notification iterators to retry.
597 * On sucess, this function sets *muxer_upstream_notif_iter to the
598 * upstream notification iterator of which the current notification is
599 * the youngest, and sets *ts_ns to its time.
602 enum bt_notification_iterator_status
603 muxer_notif_iter_youngest_upstream_notif_iter(
604 struct muxer_comp
*muxer_comp
,
605 struct muxer_notif_iter
*muxer_notif_iter
,
606 struct muxer_upstream_notif_iter
**muxer_upstream_notif_iter
,
611 int64_t youngest_ts_ns
= INT64_MAX
;
612 enum bt_notification_iterator_status status
=
613 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
616 assert(muxer_notif_iter
);
617 assert(muxer_upstream_notif_iter
);
618 *muxer_upstream_notif_iter
= NULL
;
620 for (i
= 0; i
< muxer_notif_iter
->muxer_upstream_notif_iters
->len
; i
++) {
621 struct bt_notification
*notif
;
622 struct muxer_upstream_notif_iter
*cur_muxer_upstream_notif_iter
=
623 g_ptr_array_index(muxer_notif_iter
->muxer_upstream_notif_iters
, i
);
626 if (!cur_muxer_upstream_notif_iter
->notif_iter
) {
627 /* This upstream notification iterator is ended */
631 assert(cur_muxer_upstream_notif_iter
->is_valid
);
632 notif
= bt_notification_iterator_get_notification(
633 cur_muxer_upstream_notif_iter
->notif_iter
);
635 ret
= get_notif_ts_ns(muxer_comp
, notif
,
636 muxer_notif_iter
->last_returned_ts_ns
, ¬if_ts_ns
);
639 *muxer_upstream_notif_iter
= NULL
;
640 status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
644 if (notif_ts_ns
<= youngest_ts_ns
) {
645 *muxer_upstream_notif_iter
=
646 cur_muxer_upstream_notif_iter
;
647 youngest_ts_ns
= notif_ts_ns
;
648 *ts_ns
= youngest_ts_ns
;
652 if (!*muxer_upstream_notif_iter
) {
653 status
= BT_NOTIFICATION_ITERATOR_STATUS_END
;
662 enum bt_notification_iterator_status
validate_muxer_upstream_notif_iter(
663 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
)
665 enum bt_notification_iterator_status status
=
666 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
668 if (muxer_upstream_notif_iter
->is_valid
||
669 !muxer_upstream_notif_iter
->notif_iter
) {
673 status
= muxer_upstream_notif_iter_next(muxer_upstream_notif_iter
);
680 enum bt_notification_iterator_status
validate_muxer_upstream_notif_iters(
681 struct muxer_notif_iter
*muxer_notif_iter
)
683 enum bt_notification_iterator_status status
=
684 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
687 for (i
= 0; i
< muxer_notif_iter
->muxer_upstream_notif_iters
->len
; i
++) {
688 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
=
690 muxer_notif_iter
->muxer_upstream_notif_iters
,
693 status
= validate_muxer_upstream_notif_iter(
694 muxer_upstream_notif_iter
);
695 if (status
!= BT_NOTIFICATION_ITERATOR_STATUS_OK
) {
700 * Remove this muxer upstream notification iterator
701 * if it's ended or canceled.
703 if (!muxer_upstream_notif_iter
->notif_iter
) {
705 * Use g_ptr_array_remove_fast() because the
706 * order of those elements is not important.
708 g_ptr_array_remove_index_fast(
709 muxer_notif_iter
->muxer_upstream_notif_iters
,
720 struct bt_notification_iterator_next_return
muxer_notif_iter_do_next(
721 struct muxer_comp
*muxer_comp
,
722 struct muxer_notif_iter
*muxer_notif_iter
)
724 struct muxer_upstream_notif_iter
*muxer_upstream_notif_iter
= NULL
;
725 struct bt_notification_iterator_next_return next_return
= {
726 .notification
= NULL
,
727 .status
= BT_NOTIFICATION_ITERATOR_STATUS_OK
,
729 int64_t next_return_ts
;
732 int ret
= muxer_notif_iter_handle_newly_connected_ports(
737 BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
742 validate_muxer_upstream_notif_iters(muxer_notif_iter
);
743 if (next_return
.status
!= BT_NOTIFICATION_ITERATOR_STATUS_OK
) {
748 * At this point, we know that all the existing upstream
749 * notification iterators are valid. However the
750 * operations to validate them (during
751 * validate_muxer_upstream_notif_iters()) may have
752 * connected new ports. If no ports were connected
753 * during this operation, exit the loop.
755 if (!muxer_notif_iter
->newly_connected_priv_ports
) {
760 assert(!muxer_notif_iter
->newly_connected_priv_ports
);
763 * At this point we know that all the existing upstream
764 * notification iterators are valid. We can find the one,
765 * amongst those, of which the current notification is the
769 muxer_notif_iter_youngest_upstream_notif_iter(muxer_comp
,
770 muxer_notif_iter
, &muxer_upstream_notif_iter
,
772 if (next_return
.status
< 0 ||
773 next_return
.status
== BT_NOTIFICATION_ITERATOR_STATUS_END
||
774 next_return
.status
== BT_NOTIFICATION_ITERATOR_STATUS_CANCELED
) {
778 if (next_return_ts
< muxer_notif_iter
->last_returned_ts_ns
) {
779 next_return
.status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
783 assert(next_return
.status
== BT_NOTIFICATION_ITERATOR_STATUS_OK
);
784 assert(muxer_upstream_notif_iter
);
785 next_return
.notification
= bt_notification_iterator_get_notification(
786 muxer_upstream_notif_iter
->notif_iter
);
787 assert(next_return
.notification
);
790 * We invalidate the upstream notification iterator so that, the
791 * next time this function is called,
792 * validate_muxer_upstream_notif_iters() will make it valid.
794 muxer_upstream_notif_iter
->is_valid
= false;
795 muxer_notif_iter
->last_returned_ts_ns
= next_return_ts
;
802 void destroy_muxer_notif_iter(struct muxer_notif_iter
*muxer_notif_iter
)
804 if (!muxer_notif_iter
) {
808 if (muxer_notif_iter
->muxer_upstream_notif_iters
) {
810 muxer_notif_iter
->muxer_upstream_notif_iters
, TRUE
);
813 g_list_free(muxer_notif_iter
->newly_connected_priv_ports
);
814 g_free(muxer_notif_iter
);
818 int muxer_notif_iter_init_newly_connected_ports(struct muxer_comp
*muxer_comp
,
819 struct muxer_notif_iter
*muxer_notif_iter
)
821 struct bt_component
*comp
;
827 * Add the connected input ports to this muxer notification
828 * iterator's list of newly connected ports. They will be
829 * handled by muxer_notif_iter_handle_newly_connected_ports().
831 comp
= bt_component_from_private_component(muxer_comp
->priv_comp
);
833 count
= bt_component_filter_get_input_port_count(comp
);
838 for (i
= 0; i
< count
; i
++) {
839 struct bt_private_port
*priv_port
=
840 bt_private_component_filter_get_input_private_port_by_index(
841 muxer_comp
->priv_comp
, i
);
842 struct bt_port
*port
;
845 port
= bt_port_from_private_port(priv_port
);
848 if (!bt_port_is_connected(port
)) {
856 muxer_notif_iter
->newly_connected_priv_ports
=
858 muxer_notif_iter
->newly_connected_priv_ports
,
860 if (!muxer_notif_iter
->newly_connected_priv_ports
) {
872 enum bt_notification_iterator_status
muxer_notif_iter_init(
873 struct bt_private_notification_iterator
*priv_notif_iter
,
874 struct bt_private_port
*output_priv_port
)
876 struct muxer_comp
*muxer_comp
= NULL
;
877 struct muxer_notif_iter
*muxer_notif_iter
= NULL
;
878 struct bt_private_component
*priv_comp
= NULL
;
879 enum bt_notification_iterator_status status
=
880 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
883 priv_comp
= bt_private_notification_iterator_get_private_component(
886 muxer_comp
= bt_private_component_get_user_data(priv_comp
);
889 if (muxer_comp
->initializing_muxer_notif_iter
) {
891 * Weird, unhandled situation detected: downstream
892 * creates a muxer notification iterator while creating
893 * another muxer notification iterator (same component).
898 muxer_comp
->initializing_muxer_notif_iter
= true;
899 muxer_notif_iter
= g_new0(struct muxer_notif_iter
, 1);
900 if (!muxer_notif_iter
) {
904 muxer_notif_iter
->last_returned_ts_ns
= INT64_MIN
;
905 muxer_notif_iter
->muxer_upstream_notif_iters
=
906 g_ptr_array_new_with_free_func(
907 (GDestroyNotify
) destroy_muxer_upstream_notif_iter
);
908 if (!muxer_notif_iter
->muxer_upstream_notif_iters
) {
913 * Add the muxer notification iterator to the component's array
914 * of muxer notification iterators here because
915 * muxer_notif_iter_init_newly_connected_ports() can cause
916 * muxer_port_connected() to be called, which adds the newly
917 * connected port to each muxer notification iterator's list of
918 * newly connected ports.
920 g_ptr_array_add(muxer_comp
->muxer_notif_iters
, muxer_notif_iter
);
921 ret
= muxer_notif_iter_init_newly_connected_ports(muxer_comp
,
927 ret
= bt_private_notification_iterator_set_user_data(priv_notif_iter
,
933 if (g_ptr_array_index(muxer_comp
->muxer_notif_iters
,
934 muxer_comp
->muxer_notif_iters
->len
- 1) == muxer_notif_iter
) {
935 g_ptr_array_remove_index(muxer_comp
->muxer_notif_iters
,
936 muxer_comp
->muxer_notif_iters
->len
- 1);
939 destroy_muxer_notif_iter(muxer_notif_iter
);
940 ret
= bt_private_notification_iterator_set_user_data(priv_notif_iter
,
943 status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
946 muxer_comp
->initializing_muxer_notif_iter
= false;
952 void muxer_notif_iter_finalize(
953 struct bt_private_notification_iterator
*priv_notif_iter
)
955 struct muxer_notif_iter
*muxer_notif_iter
=
956 bt_private_notification_iterator_get_user_data(priv_notif_iter
);
957 struct bt_private_component
*priv_comp
= NULL
;
958 struct muxer_comp
*muxer_comp
= NULL
;
960 priv_comp
= bt_private_notification_iterator_get_private_component(
963 muxer_comp
= bt_private_component_get_user_data(priv_comp
);
966 (void) g_ptr_array_remove_fast(muxer_comp
->muxer_notif_iters
,
968 destroy_muxer_notif_iter(muxer_notif_iter
);
975 struct bt_notification_iterator_next_return
muxer_notif_iter_next(
976 struct bt_private_notification_iterator
*priv_notif_iter
)
978 struct bt_notification_iterator_next_return next_ret
;
979 struct muxer_notif_iter
*muxer_notif_iter
=
980 bt_private_notification_iterator_get_user_data(priv_notif_iter
);
981 struct bt_private_component
*priv_comp
= NULL
;
982 struct muxer_comp
*muxer_comp
= NULL
;
984 assert(muxer_notif_iter
);
985 priv_comp
= bt_private_notification_iterator_get_private_component(
988 muxer_comp
= bt_private_component_get_user_data(priv_comp
);
991 /* Are we in an error state set elsewhere? */
992 if (unlikely(muxer_comp
->error
)) {
993 next_ret
.notification
= NULL
;
994 next_ret
.status
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
998 next_ret
= muxer_notif_iter_do_next(muxer_comp
, muxer_notif_iter
);
1006 void muxer_port_connected(
1007 struct bt_private_component
*priv_comp
,
1008 struct bt_private_port
*self_private_port
,
1009 struct bt_port
*other_port
)
1011 struct bt_port
*self_port
=
1012 bt_port_from_private_port(self_private_port
);
1013 struct muxer_comp
*muxer_comp
=
1014 bt_private_component_get_user_data(priv_comp
);
1021 if (bt_port_get_type(self_port
) == BT_PORT_TYPE_OUTPUT
) {
1025 for (i
= 0; i
< muxer_comp
->muxer_notif_iters
->len
; i
++) {
1026 struct muxer_notif_iter
*muxer_notif_iter
=
1027 g_ptr_array_index(muxer_comp
->muxer_notif_iters
, i
);
1030 * Add this port to the list of newly connected ports
1031 * for this muxer notification iterator. We append at
1032 * the end of this list while
1033 * muxer_notif_iter_handle_newly_connected_ports()
1034 * removes the nodes from the beginning.
1036 * The list node owns the private port.
1038 muxer_notif_iter
->newly_connected_priv_ports
=
1040 muxer_notif_iter
->newly_connected_priv_ports
,
1042 if (!muxer_notif_iter
->newly_connected_priv_ports
) {
1043 /* Put reference taken by bt_get() above */
1044 muxer_comp
->error
= true;
1049 /* One less available input port */
1050 muxer_comp
->available_input_ports
--;
1051 ret
= ensure_available_input_port(priv_comp
);
1054 * Only way to report an error later since this
1055 * method does not return anything.
1057 muxer_comp
->error
= true;
1066 void muxer_port_disconnected(struct bt_private_component
*priv_comp
,
1067 struct bt_private_port
*priv_port
)
1069 struct bt_port
*port
= bt_port_from_private_port(priv_port
);
1070 struct muxer_comp
*muxer_comp
=
1071 bt_private_component_get_user_data(priv_comp
);
1077 * There's nothing special to do when a port is disconnected
1078 * because this component deals with upstream notification
1079 * iterators which were already created thanks to connected
1080 * ports. The fact that the port is disconnected does not cancel
1081 * the upstream notification iterators created using its
1082 * connection: they still exist, even if the connection is dead.
1083 * The only way to remove an upstream notification iterator is
1084 * for its "next" operation to return
1085 * BT_NOTIFICATION_ITERATOR_STATUS_END.
1087 if (bt_port_get_type(port
) == BT_PORT_TYPE_INPUT
) {
1088 /* One more available input port */
1089 muxer_comp
->available_input_ports
++;