2 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
3 * Copyright 2017 Philippe Proulx <pproulx@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_COMP_LOG_SELF_COMP (dmesg_comp->self_comp)
25 #define BT_LOG_OUTPUT_LEVEL (dmesg_comp->log_level)
26 #define BT_LOG_TAG "PLUGIN/SRC.TEXT.DMESG"
27 #include "plugins/comp-logging.h"
33 #include "common/common.h"
34 #include "common/assert.h"
35 #include <babeltrace2/babeltrace.h>
36 #include "compat/utc.h"
37 #include "compat/stdio.h"
40 #define NSEC_PER_USEC 1000UL
41 #define NSEC_PER_MSEC 1000000UL
42 #define NSEC_PER_SEC 1000000000ULL
43 #define USEC_PER_SEC 1000000UL
45 struct dmesg_component
;
47 struct dmesg_msg_iter
{
48 struct dmesg_component
*dmesg_comp
;
49 bt_self_message_iterator
*pc_msg_iter
; /* Weak */
53 bt_message
*tmp_event_msg
;
54 uint64_t last_clock_value
;
57 STATE_EMIT_STREAM_BEGINNING
,
58 STATE_EMIT_STREAM_ACTIVITY_BEGINNING
,
59 STATE_EMIT_PACKET_BEGINNING
,
61 STATE_EMIT_PACKET_END
,
62 STATE_EMIT_STREAM_ACTIVITY_END
,
63 STATE_EMIT_STREAM_END
,
68 struct dmesg_component
{
69 bt_logging_level log_level
;
73 bt_bool read_from_stdin
;
77 bt_self_component_source
*self_comp_src
;
78 bt_self_component
*self_comp
;
79 bt_trace_class
*trace_class
;
80 bt_stream_class
*stream_class
;
81 bt_event_class
*event_class
;
85 bt_clock_class
*clock_class
;
89 bt_field_class
*create_event_payload_fc(struct dmesg_component
*dmesg_comp
,
90 bt_trace_class
*trace_class
)
92 bt_field_class
*root_fc
= NULL
;
93 bt_field_class
*fc
= NULL
;
96 root_fc
= bt_field_class_structure_create(trace_class
);
98 BT_COMP_LOGE_STR("Cannot create an empty structure field class object.");
102 fc
= bt_field_class_string_create(trace_class
);
104 BT_COMP_LOGE_STR("Cannot create a string field class object.");
108 ret
= bt_field_class_structure_append_member(root_fc
,
111 BT_COMP_LOGE("Cannot add `str` member to structure field class: "
119 BT_FIELD_CLASS_PUT_REF_AND_RESET(root_fc
);
122 bt_field_class_put_ref(fc
);
127 int create_meta(struct dmesg_component
*dmesg_comp
, bool has_ts
)
129 bt_field_class
*fc
= NULL
;
132 dmesg_comp
->trace_class
= bt_trace_class_create(dmesg_comp
->self_comp
);
133 if (!dmesg_comp
->trace_class
) {
134 BT_COMP_LOGE_STR("Cannot create an empty trace class object.");
138 dmesg_comp
->stream_class
= bt_stream_class_create(
139 dmesg_comp
->trace_class
);
140 if (!dmesg_comp
->stream_class
) {
141 BT_COMP_LOGE_STR("Cannot create a stream class object.");
146 dmesg_comp
->clock_class
= bt_clock_class_create(
147 dmesg_comp
->self_comp
);
148 if (!dmesg_comp
->clock_class
) {
149 BT_COMP_LOGE_STR("Cannot create clock class.");
154 * The `dmesg` timestamp's origin is not the Unix epoch,
155 * it's the boot time.
157 bt_clock_class_set_origin_is_unix_epoch(dmesg_comp
->clock_class
,
160 ret
= bt_stream_class_set_default_clock_class(
161 dmesg_comp
->stream_class
, dmesg_comp
->clock_class
);
163 BT_COMP_LOGE_STR("Cannot set stream class's default clock class.");
167 bt_stream_class_set_packets_have_beginning_default_clock_snapshot(
168 dmesg_comp
->stream_class
, BT_TRUE
);
169 bt_stream_class_set_packets_have_end_default_clock_snapshot(
170 dmesg_comp
->stream_class
, BT_TRUE
);
173 dmesg_comp
->event_class
= bt_event_class_create(
174 dmesg_comp
->stream_class
);
175 if (!dmesg_comp
->event_class
) {
176 BT_COMP_LOGE_STR("Cannot create an event class object.");
180 ret
= bt_event_class_set_name(dmesg_comp
->event_class
, "string");
182 BT_COMP_LOGE_STR("Cannot set event class's name.");
186 fc
= create_event_payload_fc(dmesg_comp
, dmesg_comp
->trace_class
);
188 BT_COMP_LOGE_STR("Cannot create event payload field class.");
192 ret
= bt_event_class_set_payload_field_class(dmesg_comp
->event_class
, fc
);
194 BT_COMP_LOGE_STR("Cannot set event class's event payload field class.");
204 bt_field_class_put_ref(fc
);
209 int handle_params(struct dmesg_component
*dmesg_comp
,
210 const bt_value
*params
)
212 const bt_value
*no_timestamp
= NULL
;
213 const bt_value
*path
= NULL
;
214 const char *path_str
;
217 no_timestamp
= bt_value_map_borrow_entry_value_const(params
,
218 "no-extract-timestamp");
220 if (!bt_value_is_bool(no_timestamp
)) {
221 BT_COMP_LOGE("Expecting a boolean value for the `no-extract-timestamp` parameter: "
223 bt_common_value_type_string(
224 bt_value_get_type(no_timestamp
)));
228 dmesg_comp
->params
.no_timestamp
=
229 bt_value_bool_get(no_timestamp
);
232 path
= bt_value_map_borrow_entry_value_const(params
, "path");
234 if (dmesg_comp
->params
.read_from_stdin
) {
235 BT_COMP_LOGE_STR("Cannot specify both `read-from-stdin` and `path` parameters.");
239 if (!bt_value_is_string(path
)) {
240 BT_COMP_LOGE("Expecting a string value for the `path` parameter: "
242 bt_common_value_type_string(
243 bt_value_get_type(path
)));
247 path_str
= bt_value_string_get(path
);
248 g_string_assign(dmesg_comp
->params
.path
, path_str
);
250 dmesg_comp
->params
.read_from_stdin
= true;
263 int create_packet_and_stream_and_trace(struct dmesg_component
*dmesg_comp
)
266 const char *trace_name
= NULL
;
267 gchar
*basename
= NULL
;
269 dmesg_comp
->trace
= bt_trace_create(dmesg_comp
->trace_class
);
270 if (!dmesg_comp
->trace
) {
271 BT_COMP_LOGE_STR("Cannot create trace object.");
275 if (dmesg_comp
->params
.read_from_stdin
) {
276 trace_name
= "STDIN";
278 basename
= g_path_get_basename(dmesg_comp
->params
.path
->str
);
281 if (strcmp(basename
, G_DIR_SEPARATOR_S
) != 0 &&
282 strcmp(basename
, ".") != 0) {
283 trace_name
= basename
;
288 ret
= bt_trace_set_name(dmesg_comp
->trace
, trace_name
);
290 BT_COMP_LOGE("Cannot set trace's name: name=\"%s\"",
296 dmesg_comp
->stream
= bt_stream_create(dmesg_comp
->stream_class
,
298 if (!dmesg_comp
->stream
) {
299 BT_COMP_LOGE_STR("Cannot create stream object.");
303 dmesg_comp
->packet
= bt_packet_create(dmesg_comp
->stream
);
304 if (!dmesg_comp
->packet
) {
305 BT_COMP_LOGE_STR("Cannot create packet object.");
323 int try_create_meta_stream_packet(struct dmesg_component
*dmesg_comp
,
328 if (dmesg_comp
->trace
) {
329 /* Already created */
333 ret
= create_meta(dmesg_comp
, has_ts
);
335 BT_COMP_LOGE("Cannot create metadata objects: dmesg-comp-addr=%p",
340 ret
= create_packet_and_stream_and_trace(dmesg_comp
);
342 BT_COMP_LOGE("Cannot create packet and stream objects: "
343 "dmesg-comp-addr=%p", dmesg_comp
);
357 void destroy_dmesg_component(struct dmesg_component
*dmesg_comp
)
363 if (dmesg_comp
->params
.path
) {
364 g_string_free(dmesg_comp
->params
.path
, TRUE
);
367 bt_packet_put_ref(dmesg_comp
->packet
);
368 bt_trace_put_ref(dmesg_comp
->trace
);
369 bt_stream_class_put_ref(dmesg_comp
->stream_class
);
370 bt_event_class_put_ref(dmesg_comp
->event_class
);
371 bt_stream_put_ref(dmesg_comp
->stream
);
372 bt_clock_class_put_ref(dmesg_comp
->clock_class
);
373 bt_trace_class_put_ref(dmesg_comp
->trace_class
);
378 bt_self_component_status
create_port(
379 bt_self_component_source
*self_comp
)
381 return bt_self_component_source_add_output_port(self_comp
,
386 bt_self_component_status
dmesg_init(
387 bt_self_component_source
*self_comp_src
,
388 bt_value
*params
, void *init_method_data
)
391 struct dmesg_component
*dmesg_comp
= g_new0(struct dmesg_component
, 1);
392 bt_self_component_status status
= BT_SELF_COMPONENT_STATUS_OK
;
393 bt_self_component
*self_comp
=
394 bt_self_component_source_as_self_component(self_comp_src
);
395 const bt_component
*comp
= bt_self_component_as_component(self_comp
);
396 bt_logging_level log_level
= bt_component_get_logging_level(comp
);
399 /* Implicit log level is not available here */
400 BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR
, log_level
, self_comp
,
401 "Failed to allocate one dmesg component structure.");
405 dmesg_comp
->log_level
= log_level
;
406 dmesg_comp
->self_comp
= self_comp
;
407 dmesg_comp
->self_comp_src
= self_comp_src
;
408 dmesg_comp
->params
.path
= g_string_new(NULL
);
409 if (!dmesg_comp
->params
.path
) {
410 BT_COMP_LOGE_STR("Failed to allocate a GString.");
414 ret
= handle_params(dmesg_comp
, params
);
416 BT_COMP_LOGE("Invalid parameters: comp-addr=%p", self_comp
);
420 if (!dmesg_comp
->params
.read_from_stdin
&&
421 !g_file_test(dmesg_comp
->params
.path
->str
,
422 G_FILE_TEST_IS_REGULAR
)) {
423 BT_COMP_LOGE("Input path is not a regular file: "
424 "comp-addr=%p, path=\"%s\"", self_comp
,
425 dmesg_comp
->params
.path
->str
);
429 status
= create_port(self_comp_src
);
430 if (status
!= BT_SELF_COMPONENT_STATUS_OK
) {
434 bt_self_component_set_data(self_comp
, dmesg_comp
);
435 BT_COMP_LOGI_STR("Component initialized.");
439 destroy_dmesg_component(dmesg_comp
);
440 bt_self_component_set_data(self_comp
, NULL
);
443 status
= BT_SELF_COMPONENT_STATUS_ERROR
;
451 void dmesg_finalize(bt_self_component_source
*self_comp
)
453 destroy_dmesg_component(bt_self_component_get_data(
454 bt_self_component_source_as_self_component(self_comp
)));
458 bt_message
*create_init_event_msg_from_line(
459 struct dmesg_msg_iter
*msg_iter
,
460 const char *line
, const char **new_start
)
463 bt_message
*msg
= NULL
;
464 bool has_timestamp
= false;
465 unsigned long sec
, usec
, msec
;
466 unsigned int year
, mon
, mday
, hour
, min
;
469 struct dmesg_component
*dmesg_comp
= msg_iter
->dmesg_comp
;
473 if (dmesg_comp
->params
.no_timestamp
) {
477 /* Extract time from input line */
478 if (sscanf(line
, "[%lu.%lu] ", &sec
, &usec
) == 2) {
479 ts
= (uint64_t) sec
* USEC_PER_SEC
+ (uint64_t) usec
;
482 * The clock class we use has a 1 GHz frequency: convert
486 has_timestamp
= true;
487 } else if (sscanf(line
, "[%u-%u-%u %u:%u:%lu.%lu] ",
488 &year
, &mon
, &mday
, &hour
, &min
,
493 memset(&ti
, 0, sizeof(ti
));
494 ti
.tm_year
= year
- 1900; /* From 1900 */
495 ti
.tm_mon
= mon
- 1; /* 0 to 11 */
501 ep_sec
= bt_timegm(&ti
);
502 if (ep_sec
!= (time_t) -1) {
503 ts
= (uint64_t) ep_sec
* NSEC_PER_SEC
504 + (uint64_t) msec
* NSEC_PER_MSEC
;
507 has_timestamp
= true;
511 /* Set new start for the message portion of the line */
512 *new_start
= strchr(line
, ']');
513 BT_ASSERT(*new_start
);
516 if ((*new_start
)[0] == ' ') {
523 * At this point, we know if the stream class's event header
524 * field class should have a timestamp or not, so we can lazily
525 * create the metadata, stream, and packet objects.
527 ret
= try_create_meta_stream_packet(dmesg_comp
, has_timestamp
);
529 /* try_create_meta_stream_packet() logs errors */
533 if (dmesg_comp
->clock_class
) {
534 msg
= bt_message_event_create_with_default_clock_snapshot(
535 msg_iter
->pc_msg_iter
,
536 dmesg_comp
->event_class
, dmesg_comp
->packet
, ts
);
537 msg_iter
->last_clock_value
= ts
;
539 msg
= bt_message_event_create(msg_iter
->pc_msg_iter
,
540 dmesg_comp
->event_class
, dmesg_comp
->packet
);
544 BT_COMP_LOGE_STR("Cannot create event message.");
548 event
= bt_message_event_borrow_event(msg
);
553 BT_MESSAGE_PUT_REF_AND_RESET(msg
);
560 int fill_event_payload_from_line(struct dmesg_component
*dmesg_comp
,
561 const char *line
, bt_event
*event
)
563 bt_field
*ep_field
= NULL
;
564 bt_field
*str_field
= NULL
;
568 ep_field
= bt_event_borrow_payload_field(event
);
570 str_field
= bt_field_structure_borrow_member_field_by_index(
573 BT_COMP_LOGE_STR("Cannot borrow `timestamp` field from event payload structure field.");
578 if (line
[len
- 1] == '\n') {
579 /* Do not include the newline character in the payload */
583 ret
= bt_field_string_clear(str_field
);
585 BT_COMP_LOGE_STR("Cannot clear string field object.");
589 ret
= bt_field_string_append_with_length(str_field
, line
, len
);
591 BT_COMP_LOGE("Cannot append value to string field object: "
606 bt_message
*create_msg_from_line(
607 struct dmesg_msg_iter
*dmesg_msg_iter
, const char *line
)
609 struct dmesg_component
*dmesg_comp
= dmesg_msg_iter
->dmesg_comp
;
610 bt_event
*event
= NULL
;
611 bt_message
*msg
= NULL
;
612 const char *new_start
;
615 msg
= create_init_event_msg_from_line(dmesg_msg_iter
,
618 BT_COMP_LOGE_STR("Cannot create and initialize event message from line.");
622 event
= bt_message_event_borrow_event(msg
);
624 ret
= fill_event_payload_from_line(dmesg_comp
, new_start
, event
);
626 BT_COMP_LOGE("Cannot fill event payload field from line: "
634 BT_MESSAGE_PUT_REF_AND_RESET(msg
);
641 void destroy_dmesg_msg_iter(struct dmesg_msg_iter
*dmesg_msg_iter
)
643 struct dmesg_component
*dmesg_comp
= dmesg_msg_iter
->dmesg_comp
;
645 if (!dmesg_msg_iter
) {
649 if (dmesg_msg_iter
->fp
&& dmesg_msg_iter
->fp
!= stdin
) {
650 if (fclose(dmesg_msg_iter
->fp
)) {
651 BT_COMP_LOGE_ERRNO("Cannot close input file", ".");
655 bt_message_put_ref(dmesg_msg_iter
->tmp_event_msg
);
656 free(dmesg_msg_iter
->linebuf
);
657 g_free(dmesg_msg_iter
);
663 bt_self_message_iterator_status
dmesg_msg_iter_init(
664 bt_self_message_iterator
*self_msg_iter
,
665 bt_self_component_source
*self_comp
,
666 bt_self_component_port_output
*self_port
)
668 struct dmesg_component
*dmesg_comp
= bt_self_component_get_data(
669 bt_self_component_source_as_self_component(self_comp
));
670 struct dmesg_msg_iter
*dmesg_msg_iter
=
671 g_new0(struct dmesg_msg_iter
, 1);
672 bt_self_message_iterator_status status
=
673 BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;
675 if (!dmesg_msg_iter
) {
676 BT_COMP_LOGE_STR("Failed to allocate on dmesg message iterator structure.");
680 BT_ASSERT(dmesg_comp
);
681 dmesg_msg_iter
->dmesg_comp
= dmesg_comp
;
682 dmesg_msg_iter
->pc_msg_iter
= self_msg_iter
;
684 if (dmesg_comp
->params
.read_from_stdin
) {
685 dmesg_msg_iter
->fp
= stdin
;
687 dmesg_msg_iter
->fp
= fopen(dmesg_comp
->params
.path
->str
, "r");
688 if (!dmesg_msg_iter
->fp
) {
689 BT_COMP_LOGE_ERRNO("Cannot open input file in read mode", ": path=\"%s\"",
690 dmesg_comp
->params
.path
->str
);
695 bt_self_message_iterator_set_data(self_msg_iter
,
700 destroy_dmesg_msg_iter(dmesg_msg_iter
);
701 bt_self_message_iterator_set_data(self_msg_iter
, NULL
);
703 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR
;
711 void dmesg_msg_iter_finalize(
712 bt_self_message_iterator
*priv_msg_iter
)
714 destroy_dmesg_msg_iter(bt_self_message_iterator_get_data(
719 bt_self_message_iterator_status
dmesg_msg_iter_next_one(
720 struct dmesg_msg_iter
*dmesg_msg_iter
,
724 struct dmesg_component
*dmesg_comp
;
725 bt_self_message_iterator_status status
=
726 BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;
728 BT_ASSERT(dmesg_msg_iter
);
729 dmesg_comp
= dmesg_msg_iter
->dmesg_comp
;
730 BT_ASSERT(dmesg_comp
);
732 if (dmesg_msg_iter
->state
== STATE_DONE
) {
733 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_END
;
737 if (dmesg_msg_iter
->tmp_event_msg
||
738 dmesg_msg_iter
->state
== STATE_EMIT_PACKET_END
||
739 dmesg_msg_iter
->state
== STATE_EMIT_STREAM_ACTIVITY_END
||
740 dmesg_msg_iter
->state
== STATE_EMIT_STREAM_END
) {
746 bool only_spaces
= true;
748 len
= bt_getline(&dmesg_msg_iter
->linebuf
,
749 &dmesg_msg_iter
->linebuf_len
, dmesg_msg_iter
->fp
);
751 if (errno
== EINVAL
) {
752 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR
;
753 } else if (errno
== ENOMEM
) {
755 BT_SELF_MESSAGE_ITERATOR_STATUS_NOMEM
;
757 if (dmesg_msg_iter
->state
== STATE_EMIT_STREAM_BEGINNING
) {
758 /* Stream did not even begin */
759 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_END
;
762 /* End current packet now */
763 dmesg_msg_iter
->state
=
764 STATE_EMIT_PACKET_END
;
772 BT_ASSERT(dmesg_msg_iter
->linebuf
);
774 /* Ignore empty lines, once trimmed */
775 for (ch
= dmesg_msg_iter
->linebuf
; *ch
!= '\0'; ch
++) {
787 dmesg_msg_iter
->tmp_event_msg
= create_msg_from_line(
788 dmesg_msg_iter
, dmesg_msg_iter
->linebuf
);
789 if (!dmesg_msg_iter
->tmp_event_msg
) {
790 BT_COMP_LOGE("Cannot create event message from line: "
791 "dmesg-comp-addr=%p, line=\"%s\"", dmesg_comp
,
792 dmesg_msg_iter
->linebuf
);
797 BT_ASSERT(dmesg_comp
->trace
);
799 switch (dmesg_msg_iter
->state
) {
800 case STATE_EMIT_STREAM_BEGINNING
:
801 BT_ASSERT(dmesg_msg_iter
->tmp_event_msg
);
802 *msg
= bt_message_stream_beginning_create(
803 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->stream
);
804 dmesg_msg_iter
->state
= STATE_EMIT_STREAM_ACTIVITY_BEGINNING
;
806 case STATE_EMIT_STREAM_ACTIVITY_BEGINNING
:
807 BT_ASSERT(dmesg_msg_iter
->tmp_event_msg
);
808 *msg
= bt_message_stream_activity_beginning_create(
809 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->stream
);
810 dmesg_msg_iter
->state
= STATE_EMIT_PACKET_BEGINNING
;
812 case STATE_EMIT_PACKET_BEGINNING
:
813 BT_ASSERT(dmesg_msg_iter
->tmp_event_msg
);
815 if (dmesg_comp
->clock_class
) {
816 *msg
= bt_message_packet_beginning_create_with_default_clock_snapshot(
817 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->packet
,
818 dmesg_msg_iter
->last_clock_value
);
820 *msg
= bt_message_packet_beginning_create(
821 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->packet
);
824 dmesg_msg_iter
->state
= STATE_EMIT_EVENT
;
826 case STATE_EMIT_EVENT
:
827 BT_ASSERT(dmesg_msg_iter
->tmp_event_msg
);
828 *msg
= dmesg_msg_iter
->tmp_event_msg
;
829 dmesg_msg_iter
->tmp_event_msg
= NULL
;
831 case STATE_EMIT_PACKET_END
:
832 if (dmesg_comp
->clock_class
) {
833 *msg
= bt_message_packet_end_create_with_default_clock_snapshot(
834 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->packet
,
835 dmesg_msg_iter
->last_clock_value
);
837 *msg
= bt_message_packet_end_create(
838 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->packet
);
841 dmesg_msg_iter
->state
= STATE_EMIT_STREAM_ACTIVITY_END
;
843 case STATE_EMIT_STREAM_ACTIVITY_END
:
844 *msg
= bt_message_stream_activity_end_create(
845 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->stream
);
846 dmesg_msg_iter
->state
= STATE_EMIT_STREAM_END
;
848 case STATE_EMIT_STREAM_END
:
849 *msg
= bt_message_stream_end_create(
850 dmesg_msg_iter
->pc_msg_iter
, dmesg_comp
->stream
);
851 dmesg_msg_iter
->state
= STATE_DONE
;
858 BT_COMP_LOGE("Cannot create message: dmesg-comp-addr=%p",
860 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR
;
868 bt_self_message_iterator_status
dmesg_msg_iter_next(
869 bt_self_message_iterator
*self_msg_iter
,
870 bt_message_array_const msgs
, uint64_t capacity
,
873 struct dmesg_msg_iter
*dmesg_msg_iter
=
874 bt_self_message_iterator_get_data(
876 bt_self_message_iterator_status status
=
877 BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;
880 while (i
< capacity
&&
881 status
== BT_SELF_MESSAGE_ITERATOR_STATUS_OK
) {
882 bt_message
*priv_msg
= NULL
;
884 status
= dmesg_msg_iter_next_one(dmesg_msg_iter
,
887 if (status
== BT_SELF_MESSAGE_ITERATOR_STATUS_OK
) {
894 * Even if dmesg_msg_iter_next_one() returned
895 * something else than
896 * BT_SELF_MESSAGE_ITERATOR_STATUS_OK, we
897 * accumulated message objects in the output
898 * message array, so we need to return
899 * BT_SELF_MESSAGE_ITERATOR_STATUS_OK so that they
900 * are transfered to downstream. This other status
901 * occurs again the next time muxer_msg_iter_do_next()
902 * is called, possibly without any accumulated
903 * message, in which case we'll return it.
906 status
= BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;
913 bt_bool
dmesg_msg_iter_can_seek_beginning(
914 bt_self_message_iterator
*self_msg_iter
)
916 struct dmesg_msg_iter
*dmesg_msg_iter
=
917 bt_self_message_iterator_get_data(self_msg_iter
);
919 /* Can't seek the beginning of the standard input stream */
920 return !dmesg_msg_iter
->dmesg_comp
->params
.read_from_stdin
;
924 bt_self_message_iterator_status
dmesg_msg_iter_seek_beginning(
925 bt_self_message_iterator
*self_msg_iter
)
927 struct dmesg_msg_iter
*dmesg_msg_iter
=
928 bt_self_message_iterator_get_data(self_msg_iter
);
930 BT_ASSERT(!dmesg_msg_iter
->dmesg_comp
->params
.read_from_stdin
);
932 BT_MESSAGE_PUT_REF_AND_RESET(dmesg_msg_iter
->tmp_event_msg
);
933 dmesg_msg_iter
->last_clock_value
= 0;
934 dmesg_msg_iter
->state
= STATE_EMIT_STREAM_BEGINNING
;
935 return BT_SELF_MESSAGE_ITERATOR_STATUS_OK
;