4 * Babeltrace Trace Trimmer Iterator
6 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 #include <babeltrace/component/notification/iterator.h>
32 #include <babeltrace/component/notification/notification.h>
33 #include <babeltrace/component/notification/event.h>
34 #include <babeltrace/component/notification/stream.h>
35 #include <babeltrace/component/notification/packet.h>
36 #include <babeltrace/component/component-filter.h>
37 #include <babeltrace/ctf-ir/event.h>
38 #include <babeltrace/ctf-ir/stream.h>
39 #include <babeltrace/ctf-ir/stream-class.h>
40 #include <babeltrace/ctf-ir/clock-class.h>
41 #include <babeltrace/ctf-ir/packet.h>
42 #include <babeltrace/ctf-ir/trace.h>
43 #include <babeltrace/ctf-ir/fields.h>
47 void trimmer_iterator_destroy(struct bt_notification_iterator
*it
)
49 struct trimmer_iterator
*it_data
;
51 it_data
= bt_notification_iterator_get_private_data(it
);
54 if (it_data
->input_iterator_group
) {
55 g_ptr_array_free(it_data
->input_iterator_group
, TRUE
);
57 bt_put(it_data
->current_notification
);
62 enum bt_notification_iterator_status
trimmer_iterator_init(
63 struct bt_component
*component
,
64 struct bt_notification_iterator
*iterator
)
66 enum bt_notification_iterator_status ret
=
67 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
68 enum bt_notification_iterator_status it_ret
;
69 struct trimmer_iterator
*it_data
= g_new0(struct trimmer_iterator
, 1);
72 ret
= BT_NOTIFICATION_ITERATOR_STATUS_NOMEM
;
76 /* FIXME init trimmer_iterator */
77 it_ret
= bt_notification_iterator_set_private_data(iterator
, it_data
);
86 struct bt_notification
*trimmer_iterator_get(
87 struct bt_notification_iterator
*iterator
)
89 struct trimmer_iterator
*trim_it
;
91 trim_it
= bt_notification_iterator_get_private_data(iterator
);
94 if (!trim_it
->current_notification
) {
95 enum bt_notification_iterator_status it_ret
;
97 it_ret
= trimmer_iterator_next(iterator
);
103 return bt_get(trim_it
->current_notification
);
107 int update_lazy_bound(struct trimmer_bound
*bound
, const char *name
,
108 int64_t ts
, bool *lazy_update
)
114 *lazy_update
= false;
120 timeval
= ts
/ NSEC_PER_SEC
;
122 if (bound
->lazy_values
.gmt
) {
123 /* Get day, month, year. */
124 if (!gmtime_r(&timeval
, &tm
)) {
125 printf_error("Failure in gmtime_r()");
128 tm
.tm_sec
= bound
->lazy_values
.ss
;
129 tm
.tm_min
= bound
->lazy_values
.mm
;
130 tm
.tm_hour
= bound
->lazy_values
.hh
;
131 timeval
= timegm(&tm
);
133 printf_error("Failure in timegm(), incorrectly formatted %s timestamp",
138 /* Get day, month, year. */
139 if (!localtime_r(&timeval
, &tm
)) {
140 printf_error("Failure in localtime_r()");
143 tm
.tm_sec
= bound
->lazy_values
.ss
;
144 tm
.tm_min
= bound
->lazy_values
.mm
;
145 tm
.tm_hour
= bound
->lazy_values
.hh
;
146 timeval
= mktime(&tm
);
148 printf_error("Failure in mktime(), incorrectly formatted %s timestamp",
153 value
= (int64_t) timeval
;
154 value
*= NSEC_PER_SEC
;
155 value
+= bound
->lazy_values
.ns
;
156 bound
->value
= value
;
167 enum bt_notification_iterator_status
168 evaluate_event_notification(struct bt_notification
*notification
,
169 struct trimmer_bound
*begin
, struct trimmer_bound
*end
,
170 bool *_event_in_range
)
174 struct bt_ctf_event
*event
= NULL
;
175 bool in_range
= true;
176 struct bt_ctf_clock_class
*clock_class
= NULL
;
177 struct bt_ctf_trace
*trace
= NULL
;
178 struct bt_ctf_stream
*stream
= NULL
;
179 struct bt_ctf_stream_class
*stream_class
= NULL
;
180 struct bt_ctf_clock_value
*clock_value
= NULL
;
181 enum bt_notification_iterator_status ret
=
182 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
183 bool lazy_update
= false;
185 event
= bt_notification_event_get_event(notification
);
188 stream
= bt_ctf_event_get_stream(event
);
191 stream_class
= bt_ctf_stream_get_class(stream
);
192 assert(stream_class
);
194 trace
= bt_ctf_stream_class_get_trace(stream_class
);
197 /* FIXME multi-clock? */
198 clock_class
= bt_ctf_trace_get_clock_class(trace
, 0);
203 clock_value
= bt_ctf_event_get_clock_value(event
, clock_class
);
205 printf_error("Failed to retrieve clock value");
206 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
210 clock_ret
= bt_ctf_clock_value_get_value_ns_from_epoch(
213 printf_error("Failed to retrieve clock value timestamp");
214 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
217 if (update_lazy_bound(begin
, "begin", ts
, &lazy_update
)) {
218 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
221 if (update_lazy_bound(end
, "end", ts
, &lazy_update
)) {
222 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
225 if (lazy_update
&& begin
->set
&& end
->set
) {
226 if (begin
->value
> end
->value
) {
227 printf_error("Unexpected: time range begin value is above end value");
228 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
232 if (begin
->set
&& ts
< begin
->value
) {
235 if (end
->set
&& ts
> end
->value
) {
243 bt_put(stream_class
);
245 *_event_in_range
= in_range
;
250 int ns_from_integer_field(struct bt_ctf_field
*integer
, int64_t *ns
)
254 uint64_t raw_clock_value
;
255 struct bt_ctf_field_type
*integer_type
= NULL
;
256 struct bt_ctf_clock_class
*clock_class
= NULL
;
257 struct bt_ctf_clock_value
*clock_value
= NULL
;
259 integer_type
= bt_ctf_field_get_type(integer
);
260 assert(integer_type
);
261 clock_class
= bt_ctf_field_type_integer_get_mapped_clock_class(
268 is_signed
= bt_ctf_field_type_integer_get_signed(integer_type
);
270 ret
= bt_ctf_field_unsigned_integer_get_value(integer
,
276 /* Signed clock values are unsupported. */
280 clock_value
= bt_ctf_clock_value_create(clock_class
, raw_clock_value
);
285 ret
= bt_ctf_clock_value_get_value_ns_from_epoch(clock_value
, ns
);
287 bt_put(integer_type
);
294 enum bt_notification_iterator_status
evaluate_packet_notification(
295 struct bt_notification
*notification
,
296 struct trimmer_bound
*begin
, struct trimmer_bound
*end
,
297 bool *_packet_in_range
)
299 enum bt_notification_iterator_status ret
=
300 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
301 int64_t begin_ns
, pkt_begin_ns
, end_ns
, pkt_end_ns
;
302 bool in_range
= true;
303 struct bt_ctf_packet
*packet
= NULL
;
304 struct bt_ctf_field
*packet_context
= NULL
,
305 *timestamp_begin
= NULL
,
306 *timestamp_end
= NULL
;
308 switch (bt_notification_get_type(notification
)) {
309 case BT_NOTIFICATION_TYPE_PACKET_BEGIN
:
310 packet
= bt_notification_packet_begin_get_packet(notification
);
312 case BT_NOTIFICATION_TYPE_PACKET_END
:
313 packet
= bt_notification_packet_end_get_packet(notification
);
320 packet_context
= bt_ctf_packet_get_context(packet
);
321 if (!packet_context
) {
325 if (!bt_ctf_field_is_structure(packet_context
)) {
329 timestamp_begin
= bt_ctf_field_structure_get_field(
330 packet_context
, "timestamp_begin");
331 if (!timestamp_begin
|| !bt_ctf_field_is_integer(timestamp_begin
)) {
334 timestamp_end
= bt_ctf_field_structure_get_field(
335 packet_context
, "timestamp_end");
336 if (!timestamp_end
|| !bt_ctf_field_is_integer(timestamp_end
)) {
340 if (ns_from_integer_field(timestamp_begin
, &pkt_begin_ns
)) {
343 if (ns_from_integer_field(timestamp_end
, &pkt_end_ns
)) {
347 begin_ns
= begin
->set
? begin
->value
: INT64_MIN
;
348 end_ns
= end
->set
? end
->value
: INT64_MAX
;
351 * Accept if there is any overlap between the selected region and the
354 in_range
= (pkt_end_ns
>= begin_ns
) && (pkt_begin_ns
<= end_ns
);
356 *_packet_in_range
= in_range
;
358 bt_put(packet_context
);
359 bt_put(timestamp_begin
);
360 bt_put(timestamp_end
);
364 /* Return true if the notification should be forwarded. */
366 enum bt_notification_iterator_status
evaluate_notification(
367 struct bt_notification
*notification
,
368 struct trimmer_bound
*begin
, struct trimmer_bound
*end
,
371 enum bt_notification_type type
;
372 enum bt_notification_iterator_status ret
=
373 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
376 type
= bt_notification_get_type(notification
);
378 case BT_NOTIFICATION_TYPE_EVENT
:
379 ret
= evaluate_event_notification(notification
, begin
,
382 case BT_NOTIFICATION_TYPE_PACKET_BEGIN
:
383 case BT_NOTIFICATION_TYPE_PACKET_END
:
384 ret
= evaluate_packet_notification(notification
, begin
,
388 /* Accept all other notifications. */
395 enum bt_notification_iterator_status
trimmer_iterator_next(
396 struct bt_notification_iterator
*iterator
)
398 struct trimmer_iterator
*trim_it
= NULL
;
399 struct bt_component
*component
= NULL
;
400 struct trimmer
*trimmer
= NULL
;
401 struct bt_notification_iterator
*source_it
= NULL
;
402 enum bt_notification_iterator_status ret
=
403 BT_NOTIFICATION_ITERATOR_STATUS_OK
;
404 enum bt_component_status component_ret
;
405 bool notification_in_range
= false;
407 trim_it
= bt_notification_iterator_get_private_data(iterator
);
410 component
= bt_notification_iterator_get_component(iterator
);
412 trimmer
= bt_component_get_private_data(component
);
415 /* FIXME, should handle input iterator groups. */
416 component_ret
= bt_component_filter_get_input_iterator(component
, 0,
418 assert((component_ret
== BT_COMPONENT_STATUS_OK
) && source_it
);
420 while (!notification_in_range
) {
421 struct bt_notification
*notification
;
423 ret
= bt_notification_iterator_next(source_it
);
424 if (ret
!= BT_NOTIFICATION_ITERATOR_STATUS_OK
) {
428 notification
= bt_notification_iterator_get_notification(
431 ret
= BT_NOTIFICATION_ITERATOR_STATUS_ERROR
;
435 ret
= evaluate_notification(notification
,
436 &trimmer
->begin
, &trimmer
->end
,
437 ¬ification_in_range
);
438 if (notification_in_range
) {
439 BT_MOVE(trim_it
->current_notification
, notification
);
441 bt_put(notification
);
444 if (ret
!= BT_NOTIFICATION_ITERATOR_STATUS_OK
) {
455 enum bt_notification_iterator_status
trimmer_iterator_seek_time(
456 struct bt_notification_iterator
*iterator
, int64_t time
)
458 enum bt_notification_iterator_status ret
;
460 ret
= BT_NOTIFICATION_ITERATOR_STATUS_OK
;