2 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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
24 #define BT_LOG_TAG "MSG-ITER"
25 #include "lib/lib-logging.h"
27 #include "compat/compiler.h"
28 #include "lib/trace-ir/clock-class.h"
29 #include "lib/trace-ir/clock-snapshot.h"
30 #include <babeltrace2/trace-ir/field.h>
31 #include <babeltrace2/trace-ir/event-const.h>
32 #include "lib/trace-ir/event.h"
33 #include <babeltrace2/trace-ir/packet-const.h>
34 #include "lib/trace-ir/packet.h"
35 #include "lib/trace-ir/stream.h"
36 #include <babeltrace2/graph/connection-const.h>
37 #include <babeltrace2/graph/component-const.h>
38 #include <babeltrace2/graph/component-sink-const.h>
39 #include <babeltrace2/graph/message-const.h>
40 #include <babeltrace2/graph/message-iterator-const.h>
41 #include <babeltrace2/graph/self-component-port-input-message-iterator.h>
42 #include <babeltrace2/graph/port-output-message-iterator.h>
43 #include <babeltrace2/graph/message-event-const.h>
44 #include <babeltrace2/graph/message-packet-beginning-const.h>
45 #include <babeltrace2/graph/message-packet-end-const.h>
46 #include <babeltrace2/graph/message-stream-beginning-const.h>
47 #include <babeltrace2/graph/message-stream-end-const.h>
48 #include <babeltrace2/graph/port-const.h>
49 #include <babeltrace2/graph/graph.h>
50 #include <babeltrace2/graph/graph-const.h>
51 #include <babeltrace2/types.h>
52 #include "common/assert.h"
53 #include "lib/assert-pre.h"
58 #include "component-class.h"
59 #include "component-class-sink-colander.h"
60 #include "component.h"
61 #include "component-sink.h"
62 #include "component-source.h"
63 #include "connection.h"
65 #include "message/discarded-items.h"
66 #include "message/event.h"
67 #include "message/iterator.h"
68 #include "message/message.h"
69 #include "message/message-iterator-inactivity.h"
70 #include "message/stream.h"
71 #include "message/packet.h"
72 #include "message/stream-activity.h"
75 * TODO: Use graph's state (number of active iterators, etc.) and
76 * possibly system specifications to make a better guess than this.
78 #define MSG_BATCH_SIZE 15
80 #define BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(_iter) \
81 BT_ASSERT_PRE((_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE || \
82 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED || \
83 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN || \
84 (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR, \
85 "Message iterator is in the wrong state: %!+i", _iter)
88 void set_self_comp_port_input_msg_iterator_state(
89 struct bt_self_component_port_input_message_iterator
*iterator
,
90 enum bt_self_component_port_input_message_iterator_state state
)
93 BT_LIB_LOGD("Updating message iterator's state: new-state=%s",
94 bt_self_component_port_input_message_iterator_state_string(state
));
95 iterator
->state
= state
;
99 void destroy_base_message_iterator(struct bt_object
*obj
)
101 struct bt_message_iterator
*iterator
= (void *) obj
;
105 if (iterator
->msgs
) {
106 g_ptr_array_free(iterator
->msgs
, TRUE
);
107 iterator
->msgs
= NULL
;
114 void bt_self_component_port_input_message_iterator_destroy(struct bt_object
*obj
)
116 struct bt_self_component_port_input_message_iterator
*iterator
;
121 * The message iterator's reference count is 0 if we're
122 * here. Increment it to avoid a double-destroy (possibly
123 * infinitely recursive). This could happen for example if the
124 * message iterator's finalization function does
125 * bt_object_get_ref() (or anything that causes
126 * bt_object_get_ref() to be called) on itself (ref. count goes
127 * from 0 to 1), and then bt_object_put_ref(): the reference
128 * count would go from 1 to 0 again and this function would be
132 iterator
= (void *) obj
;
133 BT_LIB_LOGI("Destroying self component input port message iterator object: "
135 bt_self_component_port_input_message_iterator_try_finalize(iterator
);
137 if (iterator
->connection
) {
139 * Remove ourself from the originating connection so
140 * that it does not try to finalize a dangling pointer
143 bt_connection_remove_iterator(iterator
->connection
, iterator
);
144 iterator
->connection
= NULL
;
147 if (iterator
->auto_seek_msgs
) {
148 while (!g_queue_is_empty(iterator
->auto_seek_msgs
)) {
149 bt_object_put_no_null_check(
150 g_queue_pop_tail(iterator
->auto_seek_msgs
));
153 g_queue_free(iterator
->auto_seek_msgs
);
154 iterator
->auto_seek_msgs
= NULL
;
157 destroy_base_message_iterator(obj
);
161 void bt_self_component_port_input_message_iterator_try_finalize(
162 struct bt_self_component_port_input_message_iterator
*iterator
)
164 typedef void (*method_t
)(void *);
166 struct bt_component_class
*comp_class
= NULL
;
167 method_t method
= NULL
;
171 switch (iterator
->state
) {
172 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED
:
173 /* Skip user finalization if user initialization failed */
174 BT_LIB_LOGD("Not finalizing non-initialized message iterator: "
177 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED
:
178 /* Already finalized */
179 BT_LIB_LOGD("Not finalizing message iterator: already finalized: "
182 case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING
:
183 /* Already finalized */
184 BT_LIB_LOGF("Message iterator is already being finalized: "
191 BT_LIB_LOGD("Finalizing message iterator: %!+i", iterator
);
192 set_self_comp_port_input_msg_iterator_state(iterator
,
193 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING
);
194 BT_ASSERT(iterator
->upstream_component
);
195 comp_class
= iterator
->upstream_component
->class;
197 /* Call user-defined destroy method */
198 switch (comp_class
->type
) {
199 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
201 struct bt_component_class_source
*src_comp_cls
=
204 method
= (method_t
) src_comp_cls
->methods
.msg_iter_finalize
;
207 case BT_COMPONENT_CLASS_TYPE_FILTER
:
209 struct bt_component_class_filter
*flt_comp_cls
=
212 method
= (method_t
) flt_comp_cls
->methods
.msg_iter_finalize
;
221 BT_LIB_LOGD("Calling user's finalization method: %!+i",
226 iterator
->upstream_component
= NULL
;
227 iterator
->upstream_port
= NULL
;
228 set_self_comp_port_input_msg_iterator_state(iterator
,
229 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED
);
230 BT_LIB_LOGD("Finalized message iterator: %!+i", iterator
);
237 void bt_self_component_port_input_message_iterator_set_connection(
238 struct bt_self_component_port_input_message_iterator
*iterator
,
239 struct bt_connection
*connection
)
242 iterator
->connection
= connection
;
243 BT_LIB_LOGI("Set message iterator's connection: "
244 "%![iter-]+i, %![conn-]+x", iterator
, connection
);
248 int init_message_iterator(struct bt_message_iterator
*iterator
,
249 enum bt_message_iterator_type type
,
250 bt_object_release_func destroy
)
254 bt_object_init_shared(&iterator
->base
, destroy
);
255 iterator
->type
= type
;
256 iterator
->msgs
= g_ptr_array_new();
257 if (!iterator
->msgs
) {
258 BT_LOGE_STR("Failed to allocate a GPtrArray.");
263 g_ptr_array_set_size(iterator
->msgs
, MSG_BATCH_SIZE
);
270 bt_bool
can_seek_ns_from_origin_true(
271 struct bt_self_component_port_input_message_iterator
*iterator
,
272 int64_t ns_from_origin
)
278 bt_bool
can_seek_beginning_true(
279 struct bt_self_component_port_input_message_iterator
*iterator
)
285 struct bt_self_component_port_input_message_iterator
*
286 bt_self_component_port_input_message_iterator_create_initial(
287 struct bt_component
*upstream_comp
,
288 struct bt_port
*upstream_port
)
291 struct bt_self_component_port_input_message_iterator
*iterator
= NULL
;
293 BT_ASSERT(upstream_comp
);
294 BT_ASSERT(upstream_port
);
295 BT_ASSERT(bt_port_is_connected(upstream_port
));
296 BT_LIB_LOGI("Creating initial message iterator on self component input port: "
297 "%![up-comp-]+c, %![up-port-]+p", upstream_comp
, upstream_port
);
298 BT_ASSERT(bt_component_get_class_type(upstream_comp
) ==
299 BT_COMPONENT_CLASS_TYPE_SOURCE
||
300 bt_component_get_class_type(upstream_comp
) ==
301 BT_COMPONENT_CLASS_TYPE_FILTER
);
303 struct bt_self_component_port_input_message_iterator
, 1);
305 BT_LOGE_STR("Failed to allocate one self component input port "
306 "message iterator.");
310 ret
= init_message_iterator((void *) iterator
,
311 BT_MESSAGE_ITERATOR_TYPE_SELF_COMPONENT_PORT_INPUT
,
312 bt_self_component_port_input_message_iterator_destroy
);
314 /* init_message_iterator() logs errors */
315 BT_OBJECT_PUT_REF_AND_RESET(iterator
);
319 iterator
->auto_seek_msgs
= g_queue_new();
320 if (!iterator
->auto_seek_msgs
) {
321 BT_LOGE_STR("Failed to allocate a GQueue.");
326 iterator
->upstream_component
= upstream_comp
;
327 iterator
->upstream_port
= upstream_port
;
328 iterator
->connection
= iterator
->upstream_port
->connection
;
329 iterator
->graph
= bt_component_borrow_graph(upstream_comp
);
330 set_self_comp_port_input_msg_iterator_state(iterator
,
331 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED
);
333 switch (iterator
->upstream_component
->class->type
) {
334 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
336 struct bt_component_class_source
*src_comp_cls
=
337 (void *) iterator
->upstream_component
->class;
339 iterator
->methods
.next
=
340 (bt_self_component_port_input_message_iterator_next_method
)
341 src_comp_cls
->methods
.msg_iter_next
;
342 iterator
->methods
.seek_ns_from_origin
=
343 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method
)
344 src_comp_cls
->methods
.msg_iter_seek_ns_from_origin
;
345 iterator
->methods
.seek_beginning
=
346 (bt_self_component_port_input_message_iterator_seek_beginning_method
)
347 src_comp_cls
->methods
.msg_iter_seek_beginning
;
348 iterator
->methods
.can_seek_ns_from_origin
=
349 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method
)
350 src_comp_cls
->methods
.msg_iter_can_seek_ns_from_origin
;
351 iterator
->methods
.can_seek_beginning
=
352 (bt_self_component_port_input_message_iterator_can_seek_beginning_method
)
353 src_comp_cls
->methods
.msg_iter_can_seek_beginning
;
356 case BT_COMPONENT_CLASS_TYPE_FILTER
:
358 struct bt_component_class_filter
*flt_comp_cls
=
359 (void *) iterator
->upstream_component
->class;
361 iterator
->methods
.next
=
362 (bt_self_component_port_input_message_iterator_next_method
)
363 flt_comp_cls
->methods
.msg_iter_next
;
364 iterator
->methods
.seek_ns_from_origin
=
365 (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method
)
366 flt_comp_cls
->methods
.msg_iter_seek_ns_from_origin
;
367 iterator
->methods
.seek_beginning
=
368 (bt_self_component_port_input_message_iterator_seek_beginning_method
)
369 flt_comp_cls
->methods
.msg_iter_seek_beginning
;
370 iterator
->methods
.can_seek_ns_from_origin
=
371 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method
)
372 flt_comp_cls
->methods
.msg_iter_can_seek_ns_from_origin
;
373 iterator
->methods
.can_seek_beginning
=
374 (bt_self_component_port_input_message_iterator_can_seek_beginning_method
)
375 flt_comp_cls
->methods
.msg_iter_can_seek_beginning
;
382 if (iterator
->methods
.seek_ns_from_origin
&&
383 !iterator
->methods
.can_seek_ns_from_origin
) {
384 iterator
->methods
.can_seek_ns_from_origin
=
385 (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method
)
386 can_seek_ns_from_origin_true
;
389 if (iterator
->methods
.seek_beginning
&&
390 !iterator
->methods
.can_seek_beginning
) {
391 iterator
->methods
.can_seek_beginning
=
392 (bt_self_component_port_input_message_iterator_seek_beginning_method
)
393 can_seek_beginning_true
;
396 BT_LIB_LOGI("Created initial message iterator on self component input port: "
397 "%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
398 upstream_port
, upstream_comp
, iterator
);
404 struct bt_self_component_port_input_message_iterator
*
405 bt_self_component_port_input_message_iterator_create(
406 struct bt_self_component_port_input
*self_port
)
408 typedef enum bt_self_message_iterator_status (*init_method_t
)(
409 void *, void *, void *);
411 init_method_t init_method
= NULL
;
412 struct bt_self_component_port_input_message_iterator
*iterator
=
414 struct bt_port
*port
= (void *) self_port
;
415 struct bt_port
*upstream_port
;
416 struct bt_component
*comp
;
417 struct bt_component
*upstream_comp
;
418 struct bt_component_class
*upstream_comp_cls
;
420 BT_ASSERT_PRE_NON_NULL(port
, "Port");
421 comp
= bt_port_borrow_component_inline(port
);
422 BT_ASSERT_PRE(bt_port_is_connected(port
),
423 "Port is not connected: %![port-]+p", port
);
424 BT_ASSERT_PRE(comp
, "Port is not part of a component: %![port-]+p",
426 BT_ASSERT_PRE(!bt_component_graph_is_canceled(comp
),
427 "Port's component's graph is canceled: "
428 "%![port-]+p, %![comp-]+c", port
, comp
);
429 BT_ASSERT(port
->connection
);
430 upstream_port
= port
->connection
->upstream_port
;
431 BT_ASSERT(upstream_port
);
432 upstream_comp
= bt_port_borrow_component_inline(upstream_port
);
433 BT_ASSERT(upstream_comp
);
435 bt_component_borrow_graph(upstream_comp
)->config_state
!=
436 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
437 "Graph is not configured: %!+g",
438 bt_component_borrow_graph(upstream_comp
));
439 upstream_comp_cls
= upstream_comp
->class;
440 BT_ASSERT(upstream_comp
->class->type
==
441 BT_COMPONENT_CLASS_TYPE_SOURCE
||
442 upstream_comp
->class->type
==
443 BT_COMPONENT_CLASS_TYPE_FILTER
);
444 iterator
= bt_self_component_port_input_message_iterator_create_initial(
445 upstream_comp
, upstream_port
);
447 BT_LOGW_STR("Cannot create self component input port "
448 "message iterator.");
452 switch (upstream_comp_cls
->type
) {
453 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
455 struct bt_component_class_source
*src_comp_cls
=
456 (void *) upstream_comp_cls
;
459 (init_method_t
) src_comp_cls
->methods
.msg_iter_init
;
462 case BT_COMPONENT_CLASS_TYPE_FILTER
:
464 struct bt_component_class_filter
*flt_comp_cls
=
465 (void *) upstream_comp_cls
;
468 (init_method_t
) flt_comp_cls
->methods
.msg_iter_init
;
479 BT_LIB_LOGD("Calling user's initialization method: %!+i", iterator
);
480 iter_status
= init_method(iterator
, upstream_comp
,
482 BT_LOGD("User method returned: status=%s",
483 bt_message_iterator_status_string(iter_status
));
484 if (iter_status
!= BT_MESSAGE_ITERATOR_STATUS_OK
) {
485 BT_LOGW_STR("Initialization method failed.");
486 BT_OBJECT_PUT_REF_AND_RESET(iterator
);
491 set_self_comp_port_input_msg_iterator_state(iterator
,
492 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
);
493 g_ptr_array_add(port
->connection
->iterators
, iterator
);
494 BT_LIB_LOGI("Created message iterator on self component input port: "
495 "%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
496 upstream_port
, upstream_comp
, iterator
);
502 void *bt_self_message_iterator_get_data(
503 const struct bt_self_message_iterator
*self_iterator
)
505 struct bt_self_component_port_input_message_iterator
*iterator
=
506 (void *) self_iterator
;
508 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
509 return iterator
->user_data
;
512 void bt_self_message_iterator_set_data(
513 struct bt_self_message_iterator
*self_iterator
, void *data
)
515 struct bt_self_component_port_input_message_iterator
*iterator
=
516 (void *) self_iterator
;
518 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
519 iterator
->user_data
= data
;
520 BT_LIB_LOGD("Set message iterator's user data: "
521 "%!+i, user-data-addr=%p", iterator
, data
);
524 enum bt_message_iterator_status
525 bt_self_component_port_input_message_iterator_next(
526 struct bt_self_component_port_input_message_iterator
*iterator
,
527 bt_message_array_const
*msgs
, uint64_t *user_count
)
529 int status
= BT_MESSAGE_ITERATOR_STATUS_OK
;
531 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
532 BT_ASSERT_PRE_NON_NULL(msgs
, "Message array (output)");
533 BT_ASSERT_PRE_NON_NULL(user_count
, "Message count (output)");
534 BT_ASSERT_PRE(iterator
->state
==
535 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
,
536 "Message iterator's \"next\" called, but "
537 "message iterator is in the wrong state: %!+i", iterator
);
538 BT_ASSERT(iterator
->upstream_component
);
539 BT_ASSERT(iterator
->upstream_component
->class);
541 bt_component_borrow_graph(iterator
->upstream_component
)->config_state
!=
542 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
543 "Graph is not configured: %!+g",
544 bt_component_borrow_graph(iterator
->upstream_component
));
545 BT_LIB_LOGD("Getting next self component input port "
546 "message iterator's messages: %!+i, batch-size=%u",
547 iterator
, MSG_BATCH_SIZE
);
550 * Call the user's "next" method to get the next messages
553 BT_ASSERT(iterator
->methods
.next
);
554 BT_LOGD_STR("Calling user's \"next\" method.");
556 status
= iterator
->methods
.next(iterator
,
557 (void *) iterator
->base
.msgs
->pdata
, MSG_BATCH_SIZE
,
559 BT_LOGD("User method returned: status=%s, msg-count=%" PRIu64
,
560 bt_message_iterator_status_string(status
), *user_count
);
562 BT_LOGW_STR("User method failed.");
567 * There is no way that this iterator could have been finalized
568 * during its "next" method, as the only way to do this is to
569 * put the last iterator's reference, and this can only be done
570 * by its downstream owner.
572 * For the same reason, there is no way that this iterator could
573 * have seeked (cannot seek a self message iterator).
575 BT_ASSERT(iterator
->state
==
576 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
);
579 case BT_MESSAGE_ITERATOR_STATUS_OK
:
580 BT_ASSERT_PRE(*user_count
<= MSG_BATCH_SIZE
,
581 "Invalid returned message count: greater than "
582 "batch size: count=%" PRIu64
", batch-size=%u",
583 *user_count
, MSG_BATCH_SIZE
);
584 *msgs
= (void *) iterator
->base
.msgs
->pdata
;
586 case BT_MESSAGE_ITERATOR_STATUS_AGAIN
:
588 case BT_MESSAGE_ITERATOR_STATUS_END
:
589 set_self_comp_port_input_msg_iterator_state(iterator
,
590 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED
);
593 /* Unknown non-error status */
601 enum bt_message_iterator_status
bt_port_output_message_iterator_next(
602 struct bt_port_output_message_iterator
*iterator
,
603 bt_message_array_const
*msgs_to_user
,
604 uint64_t *count_to_user
)
606 enum bt_message_iterator_status status
;
607 enum bt_graph_status graph_status
;
609 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
610 BT_ASSERT_PRE_NON_NULL(msgs_to_user
, "Message array (output)");
611 BT_ASSERT_PRE_NON_NULL(count_to_user
, "Message count (output)");
612 BT_LIB_LOGD("Getting next output port message iterator's messages: "
614 graph_status
= bt_graph_consume_sink_no_check(iterator
->graph
,
616 switch (graph_status
) {
617 case BT_GRAPH_STATUS_CANCELED
:
618 case BT_GRAPH_STATUS_AGAIN
:
619 case BT_GRAPH_STATUS_END
:
620 case BT_GRAPH_STATUS_NOMEM
:
621 status
= (int) graph_status
;
623 case BT_GRAPH_STATUS_OK
:
624 status
= BT_MESSAGE_ITERATOR_STATUS_OK
;
627 * On success, the colander sink moves the messages
628 * to this iterator's array and sets this iterator's
629 * message count: move them to the user.
631 *msgs_to_user
= (void *) iterator
->base
.msgs
->pdata
;
632 *count_to_user
= iterator
->count
;
636 status
= BT_MESSAGE_ITERATOR_STATUS_ERROR
;
642 struct bt_component
*
643 bt_self_component_port_input_message_iterator_borrow_component(
644 struct bt_self_component_port_input_message_iterator
*iterator
)
646 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
647 return iterator
->upstream_component
;
650 const struct bt_component
*
651 bt_self_component_port_input_message_iterator_borrow_component_const(
652 const struct bt_self_component_port_input_message_iterator
*iterator
)
654 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
655 return iterator
->upstream_component
;
658 struct bt_self_component
*bt_self_message_iterator_borrow_component(
659 struct bt_self_message_iterator
*self_iterator
)
661 struct bt_self_component_port_input_message_iterator
*iterator
=
662 (void *) self_iterator
;
664 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
665 return (void *) iterator
->upstream_component
;
668 struct bt_self_port_output
*bt_self_message_iterator_borrow_port(
669 struct bt_self_message_iterator
*self_iterator
)
671 struct bt_self_component_port_input_message_iterator
*iterator
=
672 (void *) self_iterator
;
674 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
675 return (void *) iterator
->upstream_port
;
679 void bt_port_output_message_iterator_destroy(struct bt_object
*obj
)
681 struct bt_port_output_message_iterator
*iterator
= (void *) obj
;
683 BT_LIB_LOGI("Destroying output port message iterator object: %!+i",
685 BT_LOGD_STR("Putting graph.");
686 BT_OBJECT_PUT_REF_AND_RESET(iterator
->graph
);
687 BT_LOGD_STR("Putting colander sink component.");
688 BT_OBJECT_PUT_REF_AND_RESET(iterator
->colander
);
689 destroy_base_message_iterator(obj
);
692 struct bt_port_output_message_iterator
*
693 bt_port_output_message_iterator_create(struct bt_graph
*graph
,
694 const struct bt_port_output
*output_port
)
696 struct bt_port_output_message_iterator
*iterator
= NULL
;
697 struct bt_component_class_sink
*colander_comp_cls
= NULL
;
698 struct bt_component
*output_port_comp
= NULL
;
699 struct bt_component_sink
*colander_comp
;
700 enum bt_graph_status graph_status
;
701 struct bt_port_input
*colander_in_port
= NULL
;
702 struct bt_component_class_sink_colander_data colander_data
;
705 BT_ASSERT_PRE_NON_NULL(graph
, "Graph");
706 BT_ASSERT_PRE_NON_NULL(output_port
, "Output port");
707 output_port_comp
= bt_port_borrow_component_inline(
708 (const void *) output_port
);
709 BT_ASSERT_PRE(output_port_comp
,
710 "Output port has no component: %!+p", output_port
);
711 BT_ASSERT_PRE(bt_component_borrow_graph(output_port_comp
) ==
713 "Output port is not part of graph: %![graph-]+g, %![port-]+p",
715 BT_ASSERT_PRE(!graph
->has_sink
,
716 "Graph already has a sink component: %![graph-]+g");
718 /* Create message iterator */
719 BT_LIB_LOGI("Creating message iterator on output port: "
720 "%![port-]+p, %![comp-]+c", output_port
, output_port_comp
);
721 iterator
= g_new0(struct bt_port_output_message_iterator
, 1);
723 BT_LOGE_STR("Failed to allocate one output port message iterator.");
727 ret
= init_message_iterator((void *) iterator
,
728 BT_MESSAGE_ITERATOR_TYPE_PORT_OUTPUT
,
729 bt_port_output_message_iterator_destroy
);
731 /* init_message_iterator() logs errors */
732 BT_OBJECT_PUT_REF_AND_RESET(iterator
);
736 /* Create colander component */
737 colander_comp_cls
= bt_component_class_sink_colander_get();
738 if (!colander_comp_cls
) {
739 BT_LOGW("Cannot get colander sink component class.");
743 iterator
->graph
= graph
;
744 bt_object_get_no_null_check(iterator
->graph
);
745 colander_data
.msgs
= (void *) iterator
->base
.msgs
->pdata
;
746 colander_data
.count_addr
= &iterator
->count
;
748 /* Hope that nobody uses this very unique name */
750 bt_graph_add_sink_component_with_init_method_data(
751 (void *) graph
, colander_comp_cls
,
752 "colander-36ac3409-b1a8-4d60-ab1f-4fdf341a8fb1",
753 NULL
, &colander_data
, (void *) &iterator
->colander
);
754 if (graph_status
!= BT_GRAPH_STATUS_OK
) {
755 BT_LIB_LOGW("Cannot add colander sink component to graph: "
756 "%1[graph-]+g, status=%s", graph
,
757 bt_graph_status_string(graph_status
));
762 * Connect provided output port to the colander component's
766 (void *) bt_component_sink_borrow_input_port_by_index_const(
767 (void *) iterator
->colander
, 0);
768 BT_ASSERT(colander_in_port
);
769 graph_status
= bt_graph_connect_ports(graph
,
770 output_port
, colander_in_port
, NULL
);
771 if (graph_status
!= BT_GRAPH_STATUS_OK
) {
772 BT_LIB_LOGW("Cannot add colander sink component to graph: "
773 "%![graph-]+g, %![comp-]+c, status=%s", graph
,
775 bt_graph_status_string(graph_status
));
780 * At this point everything went fine. Make the graph
781 * nonconsumable forever so that only this message iterator
782 * can consume (thanks to bt_graph_consume_sink_no_check()).
783 * This avoids leaking the message created by the colander
784 * sink and moved to the message iterator's message
787 bt_graph_set_can_consume(iterator
->graph
, false);
789 /* Also set the graph as being configured. */
790 graph_status
= bt_graph_configure(graph
);
791 if (graph_status
!= BT_GRAPH_STATUS_OK
) {
792 BT_LIB_LOGW("Cannot configure graph after having added colander: "
793 "%![graph-]+g, status=%s", graph
,
794 bt_graph_status_string(graph_status
));
800 if (iterator
&& iterator
->graph
&& iterator
->colander
) {
803 /* Remove created colander component from graph if any */
804 colander_comp
= iterator
->colander
;
805 BT_OBJECT_PUT_REF_AND_RESET(iterator
->colander
);
808 * At this point the colander component's reference
809 * count is 0 because iterator->colander was the only
810 * owner. We also know that it is not connected because
811 * this is the last operation before this function
814 * Since we honor the preconditions here,
815 * bt_graph_remove_unconnected_component() always
818 ret
= bt_graph_remove_unconnected_component(iterator
->graph
,
819 (void *) colander_comp
);
823 BT_OBJECT_PUT_REF_AND_RESET(iterator
);
826 bt_object_put_ref(colander_comp_cls
);
827 return (void *) iterator
;
830 bt_bool
bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
831 struct bt_self_component_port_input_message_iterator
*iterator
,
832 int64_t ns_from_origin
)
834 bt_bool can
= BT_FALSE
;
836 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
837 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator
);
839 bt_component_borrow_graph(iterator
->upstream_component
)->config_state
!=
840 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
841 "Graph is not configured: %!+g",
842 bt_component_borrow_graph(iterator
->upstream_component
));
844 if (iterator
->methods
.can_seek_ns_from_origin
) {
845 can
= iterator
->methods
.can_seek_ns_from_origin(iterator
,
851 * Automatic seeking fall back: if we can seek to the beginning,
852 * then we can automatically seek to any message.
854 if (iterator
->methods
.can_seek_beginning
) {
855 can
= iterator
->methods
.can_seek_beginning(iterator
);
862 bt_bool
bt_self_component_port_input_message_iterator_can_seek_beginning(
863 struct bt_self_component_port_input_message_iterator
*iterator
)
865 bt_bool can
= BT_FALSE
;
867 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
868 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator
);
870 bt_component_borrow_graph(iterator
->upstream_component
)->config_state
!=
871 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
872 "Graph is not configured: %!+g",
873 bt_component_borrow_graph(iterator
->upstream_component
));
875 if (iterator
->methods
.can_seek_beginning
) {
876 can
= iterator
->methods
.can_seek_beginning(iterator
);
883 void set_iterator_state_after_seeking(
884 struct bt_self_component_port_input_message_iterator
*iterator
,
885 enum bt_message_iterator_status status
)
887 enum bt_self_component_port_input_message_iterator_state new_state
= 0;
889 /* Set iterator's state depending on seeking status */
891 case BT_MESSAGE_ITERATOR_STATUS_OK
:
892 new_state
= BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
;
894 case BT_MESSAGE_ITERATOR_STATUS_AGAIN
:
895 new_state
= BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN
;
897 case BT_MESSAGE_ITERATOR_STATUS_ERROR
:
898 case BT_MESSAGE_ITERATOR_STATUS_NOMEM
:
899 new_state
= BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR
;
901 case BT_MESSAGE_ITERATOR_STATUS_END
:
902 new_state
= BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED
;
908 set_self_comp_port_input_msg_iterator_state(iterator
, new_state
);
911 enum bt_message_iterator_status
912 bt_self_component_port_input_message_iterator_seek_beginning(
913 struct bt_self_component_port_input_message_iterator
*iterator
)
917 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
918 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator
);
920 bt_component_borrow_graph(iterator
->upstream_component
)->config_state
!=
921 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
922 "Graph is not configured: %!+g",
923 bt_component_borrow_graph(iterator
->upstream_component
));
925 bt_self_component_port_input_message_iterator_can_seek_beginning(
927 "Message iterator cannot seek beginning: %!+i", iterator
);
928 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i", iterator
);
929 set_self_comp_port_input_msg_iterator_state(iterator
,
930 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING
);
931 status
= iterator
->methods
.seek_beginning(iterator
);
932 BT_LOGD("User method returned: status=%s",
933 bt_message_iterator_status_string(status
));
934 BT_ASSERT_PRE(status
== BT_MESSAGE_ITERATOR_STATUS_OK
||
935 status
== BT_MESSAGE_ITERATOR_STATUS_ERROR
||
936 status
== BT_MESSAGE_ITERATOR_STATUS_NOMEM
||
937 status
== BT_MESSAGE_ITERATOR_STATUS_AGAIN
,
938 "Unexpected status: %![iter-]+i, status=%s",
939 iterator
, bt_common_self_message_iterator_status_string(status
));
940 set_iterator_state_after_seeking(iterator
, status
);
945 enum bt_message_iterator_status
auto_seek_handle_message(
946 struct bt_self_component_port_input_message_iterator
*iterator
,
947 int64_t ns_from_origin
, const struct bt_message
*msg
,
950 enum bt_message_iterator_status status
= BT_MESSAGE_ITERATOR_STATUS_OK
;
951 int64_t msg_ns_from_origin
;
952 const struct bt_clock_snapshot
*clk_snapshot
= NULL
;
956 BT_ASSERT(got_first
);
959 case BT_MESSAGE_TYPE_EVENT
:
961 const struct bt_message_event
*event_msg
=
964 clk_snapshot
= event_msg
->default_cs
;
965 BT_ASSERT_PRE(clk_snapshot
,
966 "Event message has no default clock snapshot: %!+n",
970 case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY
:
972 const struct bt_message_message_iterator_inactivity
*inactivity_msg
=
975 clk_snapshot
= inactivity_msg
->default_cs
;
976 BT_ASSERT(clk_snapshot
);
979 case BT_MESSAGE_TYPE_PACKET_BEGINNING
:
980 case BT_MESSAGE_TYPE_PACKET_END
:
982 const struct bt_message_packet
*packet_msg
=
985 clk_snapshot
= packet_msg
->default_cs
;
986 BT_ASSERT_PRE(clk_snapshot
,
987 "Packet message has no default clock snapshot: %!+n",
991 case BT_MESSAGE_TYPE_DISCARDED_EVENTS
:
992 case BT_MESSAGE_TYPE_DISCARDED_PACKETS
:
994 struct bt_message_discarded_items
*msg_disc_items
=
997 BT_ASSERT_PRE(msg_disc_items
->default_begin_cs
&&
998 msg_disc_items
->default_end_cs
,
999 "Discarded events/packets message has no default clock snapshots: %!+n",
1001 ret
= bt_clock_snapshot_get_ns_from_origin(
1002 msg_disc_items
->default_begin_cs
,
1003 &msg_ns_from_origin
);
1005 status
= BT_MESSAGE_ITERATOR_STATUS_ERROR
;
1009 if (msg_ns_from_origin
>= ns_from_origin
) {
1014 ret
= bt_clock_snapshot_get_ns_from_origin(
1015 msg_disc_items
->default_end_cs
,
1016 &msg_ns_from_origin
);
1018 status
= BT_MESSAGE_ITERATOR_STATUS_ERROR
;
1022 if (msg_ns_from_origin
>= ns_from_origin
) {
1024 * The discarded items message's beginning time
1025 * is before the requested seeking time, but its
1026 * end time is after. Modify the message so as
1027 * to set its beginning time to the requested
1028 * seeking time, and make its item count unknown
1029 * as we don't know if items were really
1030 * discarded within the new time range.
1032 uint64_t new_begin_raw_value
;
1034 ret
= bt_clock_class_clock_value_from_ns_from_origin(
1035 msg_disc_items
->default_end_cs
->clock_class
,
1036 ns_from_origin
, &new_begin_raw_value
);
1038 status
= BT_MESSAGE_ITERATOR_STATUS_ERROR
;
1042 bt_clock_snapshot_set_raw_value(
1043 msg_disc_items
->default_begin_cs
,
1044 new_begin_raw_value
);
1045 msg_disc_items
->count
.base
.avail
=
1046 BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE
;
1049 * It is safe to push it because its beginning
1050 * time is exactly the requested seeking time.
1057 case BT_MESSAGE_TYPE_STREAM_ACTIVITY_BEGINNING
:
1059 const struct bt_message_stream_activity
*stream_act_msg
=
1062 switch (stream_act_msg
->default_cs_state
) {
1063 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_UNKNOWN
:
1064 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_INFINITE
:
1066 * -inf is always less than any requested time,
1067 * and we can't assume any specific time for an
1068 * unknown clock snapshot, so skip this.
1071 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN
:
1072 clk_snapshot
= stream_act_msg
->default_cs
;
1073 BT_ASSERT(clk_snapshot
);
1081 case BT_MESSAGE_TYPE_STREAM_ACTIVITY_END
:
1083 const struct bt_message_stream_activity
*stream_act_msg
=
1086 switch (stream_act_msg
->default_cs_state
) {
1087 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_UNKNOWN
:
1089 * We can't assume any specific time for an
1090 * unknown clock snapshot, so skip this.
1093 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_INFINITE
:
1095 * +inf is always greater than any requested
1100 case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN
:
1101 clk_snapshot
= stream_act_msg
->default_cs
;
1102 BT_ASSERT(clk_snapshot
);
1110 case BT_MESSAGE_TYPE_STREAM_BEGINNING
:
1111 case BT_MESSAGE_TYPE_STREAM_END
:
1118 BT_ASSERT(clk_snapshot
);
1119 ret
= bt_clock_snapshot_get_ns_from_origin(clk_snapshot
,
1120 &msg_ns_from_origin
);
1122 status
= BT_MESSAGE_ITERATOR_STATUS_ERROR
;
1126 if (msg_ns_from_origin
>= ns_from_origin
) {
1132 bt_object_put_no_null_check(msg
);
1137 g_queue_push_head(iterator
->auto_seek_msgs
, (void *) msg
);
1141 BT_ASSERT(!msg
|| status
!= BT_MESSAGE_ITERATOR_STATUS_OK
);
1146 enum bt_message_iterator_status
find_message_ge_ns_from_origin(
1147 struct bt_self_component_port_input_message_iterator
*iterator
,
1148 int64_t ns_from_origin
)
1151 enum bt_self_component_port_input_message_iterator_state init_state
=
1153 const struct bt_message
*messages
[MSG_BATCH_SIZE
];
1154 uint64_t user_count
= 0;
1156 bool got_first
= false;
1158 BT_ASSERT(iterator
);
1159 memset(&messages
[0], 0, sizeof(messages
[0]) * MSG_BATCH_SIZE
);
1162 * Make this iterator temporarily active (not seeking) to call
1163 * the "next" method.
1165 set_self_comp_port_input_msg_iterator_state(iterator
,
1166 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
);
1168 BT_ASSERT(iterator
->methods
.next
);
1170 while (!got_first
) {
1172 * Call the user's "next" method to get the next
1173 * messages and status.
1175 BT_LOGD_STR("Calling user's \"next\" method.");
1176 status
= iterator
->methods
.next(iterator
,
1177 &messages
[0], MSG_BATCH_SIZE
, &user_count
);
1178 BT_LOGD("User method returned: status=%s",
1179 bt_message_iterator_status_string(status
));
1182 * The user's "next" method must not do any action which
1183 * would change the iterator's state.
1185 BT_ASSERT(iterator
->state
==
1186 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE
);
1189 case BT_MESSAGE_ITERATOR_STATUS_OK
:
1190 BT_ASSERT_PRE(user_count
<= MSG_BATCH_SIZE
,
1191 "Invalid returned message count: greater than "
1192 "batch size: count=%" PRIu64
", batch-size=%u",
1193 user_count
, MSG_BATCH_SIZE
);
1195 case BT_MESSAGE_ITERATOR_STATUS_AGAIN
:
1196 case BT_MESSAGE_ITERATOR_STATUS_ERROR
:
1197 case BT_MESSAGE_ITERATOR_STATUS_NOMEM
:
1198 case BT_MESSAGE_ITERATOR_STATUS_END
:
1204 for (i
= 0; i
< user_count
; i
++) {
1206 g_queue_push_head(iterator
->auto_seek_msgs
,
1207 (void *) messages
[i
]);
1212 status
= auto_seek_handle_message(iterator
,
1213 ns_from_origin
, messages
[i
], &got_first
);
1214 if (status
== BT_MESSAGE_ITERATOR_STATUS_OK
) {
1215 /* Message was either pushed or moved */
1224 for (i
= 0; i
< user_count
; i
++) {
1226 bt_object_put_no_null_check(messages
[i
]);
1230 set_self_comp_port_input_msg_iterator_state(iterator
, init_state
);
1235 enum bt_self_message_iterator_status
post_auto_seek_next(
1236 struct bt_self_component_port_input_message_iterator
*iterator
,
1237 bt_message_array_const msgs
, uint64_t capacity
,
1240 BT_ASSERT(!g_queue_is_empty(iterator
->auto_seek_msgs
));
1244 * Move auto-seek messages to the output array (which is this
1245 * iterator's base message array).
1247 while (capacity
> 0 && !g_queue_is_empty(iterator
->auto_seek_msgs
)) {
1248 msgs
[*count
] = g_queue_pop_tail(iterator
->auto_seek_msgs
);
1253 BT_ASSERT(*count
> 0);
1255 if (g_queue_is_empty(iterator
->auto_seek_msgs
)) {
1256 /* No more auto-seek messages */
1257 switch (iterator
->upstream_component
->class->type
) {
1258 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
1260 struct bt_component_class_source
*src_comp_cls
=
1261 (void *) iterator
->upstream_component
->class;
1263 iterator
->methods
.next
=
1264 (bt_self_component_port_input_message_iterator_next_method
)
1265 src_comp_cls
->methods
.msg_iter_next
;
1268 case BT_COMPONENT_CLASS_TYPE_FILTER
:
1270 struct bt_component_class_filter
*flt_comp_cls
=
1271 (void *) iterator
->upstream_component
->class;
1273 iterator
->methods
.next
=
1274 (bt_self_component_port_input_message_iterator_next_method
)
1275 flt_comp_cls
->methods
.msg_iter_next
;
1283 return BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;
1286 enum bt_message_iterator_status
1287 bt_self_component_port_input_message_iterator_seek_ns_from_origin(
1288 struct bt_self_component_port_input_message_iterator
*iterator
,
1289 int64_t ns_from_origin
)
1293 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
1294 BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator
);
1296 bt_component_borrow_graph(iterator
->upstream_component
)->config_state
!=
1297 BT_GRAPH_CONFIGURATION_STATE_CONFIGURING
,
1298 "Graph is not configured: %!+g",
1299 bt_component_borrow_graph(iterator
->upstream_component
));
1301 bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
1302 iterator
, ns_from_origin
),
1303 "Message iterator cannot seek nanoseconds from origin: %!+i, "
1304 "ns-from-origin=%" PRId64
, iterator
, ns_from_origin
);
1305 set_self_comp_port_input_msg_iterator_state(iterator
,
1306 BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING
);
1308 if (iterator
->methods
.seek_ns_from_origin
) {
1309 BT_LIB_LOGD("Calling user's \"seek nanoseconds from origin\" method: "
1310 "%![iter-]+i, ns=%" PRId64
, iterator
, ns_from_origin
);
1311 status
= iterator
->methods
.seek_ns_from_origin(iterator
,
1313 BT_LOGD("User method returned: status=%s",
1314 bt_message_iterator_status_string(status
));
1315 BT_ASSERT_PRE(status
== BT_MESSAGE_ITERATOR_STATUS_OK
||
1316 status
== BT_MESSAGE_ITERATOR_STATUS_ERROR
||
1317 status
== BT_MESSAGE_ITERATOR_STATUS_NOMEM
||
1318 status
== BT_MESSAGE_ITERATOR_STATUS_AGAIN
,
1319 "Unexpected status: %![iter-]+i, status=%s",
1321 bt_common_self_message_iterator_status_string(status
));
1323 /* Start automatic seeking: seek beginning first */
1324 BT_ASSERT(iterator
->methods
.can_seek_beginning(iterator
));
1325 BT_ASSERT(iterator
->methods
.seek_beginning
);
1326 BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i",
1328 status
= iterator
->methods
.seek_beginning(iterator
);
1329 BT_LOGD("User method returned: status=%s",
1330 bt_message_iterator_status_string(status
));
1331 BT_ASSERT_PRE(status
== BT_MESSAGE_ITERATOR_STATUS_OK
||
1332 status
== BT_MESSAGE_ITERATOR_STATUS_ERROR
||
1333 status
== BT_MESSAGE_ITERATOR_STATUS_NOMEM
||
1334 status
== BT_MESSAGE_ITERATOR_STATUS_AGAIN
,
1335 "Unexpected status: %![iter-]+i, status=%s",
1337 bt_common_self_message_iterator_status_string(status
));
1339 case BT_MESSAGE_ITERATOR_STATUS_OK
:
1341 case BT_MESSAGE_ITERATOR_STATUS_ERROR
:
1342 case BT_MESSAGE_ITERATOR_STATUS_NOMEM
:
1343 case BT_MESSAGE_ITERATOR_STATUS_AGAIN
:
1350 * Find the first message which has a default clock
1351 * snapshot greater than or equal to the requested
1352 * seeking time, and move the received messages from
1353 * this point in the batch to this iterator's auto-seek
1356 while (!g_queue_is_empty(iterator
->auto_seek_msgs
)) {
1357 bt_object_put_no_null_check(
1358 g_queue_pop_tail(iterator
->auto_seek_msgs
));
1361 status
= find_message_ge_ns_from_origin(iterator
,
1364 case BT_MESSAGE_ITERATOR_STATUS_OK
:
1365 case BT_MESSAGE_ITERATOR_STATUS_END
:
1367 * If there are messages in the auto-seek
1368 * message queue, replace the user's "next"
1369 * method with a custom, temporary "next" method
1370 * which returns them.
1372 if (!g_queue_is_empty(iterator
->auto_seek_msgs
)) {
1373 iterator
->methods
.next
=
1374 (bt_self_component_port_input_message_iterator_next_method
)
1375 post_auto_seek_next
;
1379 * `BT_MESSAGE_ITERATOR_STATUS_END` becomes
1380 * `BT_MESSAGE_ITERATOR_STATUS_OK`: the next
1381 * time this iterator's "next" method is called,
1383 * `BT_MESSAGE_ITERATOR_STATUS_END`.
1385 status
= BT_MESSAGE_ITERATOR_STATUS_OK
;
1387 case BT_MESSAGE_ITERATOR_STATUS_ERROR
:
1388 case BT_MESSAGE_ITERATOR_STATUS_NOMEM
:
1389 case BT_MESSAGE_ITERATOR_STATUS_AGAIN
:
1397 set_iterator_state_after_seeking(iterator
, status
);
1402 bt_self_component_port_input_message_iterator
*
1403 borrow_output_port_message_iterator_upstream_iterator(
1404 struct bt_port_output_message_iterator
*iterator
)
1406 struct bt_component_class_sink_colander_priv_data
*colander_data
;
1408 BT_ASSERT(iterator
);
1409 colander_data
= (void *) iterator
->colander
->parent
.user_data
;
1410 BT_ASSERT(colander_data
);
1411 BT_ASSERT(colander_data
->msg_iter
);
1412 return colander_data
->msg_iter
;
1415 bt_bool
bt_port_output_message_iterator_can_seek_ns_from_origin(
1416 struct bt_port_output_message_iterator
*iterator
,
1417 int64_t ns_from_origin
)
1419 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
1420 return bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
1421 borrow_output_port_message_iterator_upstream_iterator(
1422 iterator
), ns_from_origin
);
1425 bt_bool
bt_port_output_message_iterator_can_seek_beginning(
1426 struct bt_port_output_message_iterator
*iterator
)
1428 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
1429 return bt_self_component_port_input_message_iterator_can_seek_beginning(
1430 borrow_output_port_message_iterator_upstream_iterator(
1434 enum bt_message_iterator_status
bt_port_output_message_iterator_seek_ns_from_origin(
1435 struct bt_port_output_message_iterator
*iterator
,
1436 int64_t ns_from_origin
)
1438 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
1439 return bt_self_component_port_input_message_iterator_seek_ns_from_origin(
1440 borrow_output_port_message_iterator_upstream_iterator(iterator
),
1444 enum bt_message_iterator_status
bt_port_output_message_iterator_seek_beginning(
1445 struct bt_port_output_message_iterator
*iterator
)
1447 BT_ASSERT_PRE_NON_NULL(iterator
, "Message iterator");
1448 return bt_self_component_port_input_message_iterator_seek_beginning(
1449 borrow_output_port_message_iterator_upstream_iterator(
1453 void bt_port_output_message_iterator_get_ref(
1454 const struct bt_port_output_message_iterator
*iterator
)
1456 bt_object_get_ref(iterator
);
1459 void bt_port_output_message_iterator_put_ref(
1460 const struct bt_port_output_message_iterator
*iterator
)
1462 bt_object_put_ref(iterator
);
1465 void bt_self_component_port_input_message_iterator_get_ref(
1466 const struct bt_self_component_port_input_message_iterator
*iterator
)
1468 bt_object_get_ref(iterator
);
1471 void bt_self_component_port_input_message_iterator_put_ref(
1472 const struct bt_self_component_port_input_message_iterator
*iterator
)
1474 bt_object_put_ref(iterator
);