Port: Add Solaris endian.h compat
[babeltrace.git] / formats / ctf / ir / stream-class.c
CommitLineData
11b0cdc8 1/*
3f043b05 2 * stream-class.c
11b0cdc8 3 *
d2dc44b6 4 * Babeltrace CTF IR - Stream Class
11b0cdc8 5 *
de9dd397 6 * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
11b0cdc8
JG
7 *
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
9 *
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:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
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
26 * SOFTWARE.
27 */
28
29#include <babeltrace/ctf-writer/clock.h>
30#include <babeltrace/ctf-ir/clock-internal.h>
31#include <babeltrace/ctf-writer/event.h>
32#include <babeltrace/ctf-ir/event-internal.h>
33#include <babeltrace/ctf-ir/event-types-internal.h>
34#include <babeltrace/ctf-ir/event-fields-internal.h>
35#include <babeltrace/ctf-writer/stream.h>
36#include <babeltrace/ctf-ir/stream-class-internal.h>
26079216 37#include <babeltrace/ctf-ir/visitor-internal.h>
11b0cdc8 38#include <babeltrace/ctf-writer/functor-internal.h>
654c1444 39#include <babeltrace/ctf-ir/utils.h>
83509119 40#include <babeltrace/ref.h>
11b0cdc8
JG
41#include <babeltrace/compiler.h>
42#include <babeltrace/align.h>
a0b720b2 43#include <babeltrace/endian.h>
11b0cdc8
JG
44
45static
83509119 46void bt_ctf_stream_class_destroy(struct bt_object *obj);
11b0cdc8 47static
662e778c 48int init_event_header(struct bt_ctf_stream_class *stream_class);
11b0cdc8 49static
662e778c 50int init_packet_context(struct bt_ctf_stream_class *stream_class);
11b0cdc8
JG
51
52struct bt_ctf_stream_class *bt_ctf_stream_class_create(const char *name)
53{
12c8a1a3 54 int ret;
11b0cdc8
JG
55 struct bt_ctf_stream_class *stream_class = NULL;
56
3ea33115 57 if (name && bt_ctf_validate_identifier(name)) {
11b0cdc8
JG
58 goto error;
59 }
60
61 stream_class = g_new0(struct bt_ctf_stream_class, 1);
62 if (!stream_class) {
63 goto error;
64 }
65
66 stream_class->name = g_string_new(name);
67 stream_class->event_classes = g_ptr_array_new_with_free_func(
83509119 68 (GDestroyNotify) bt_put);
11b0cdc8 69 if (!stream_class->event_classes) {
83509119 70 goto error;
11b0cdc8
JG
71 }
72
662e778c
JG
73 ret = init_event_header(stream_class);
74 if (ret) {
83509119 75 goto error;
662e778c
JG
76 }
77
78 ret = init_packet_context(stream_class);
12c8a1a3 79 if (ret) {
83509119 80 goto error;
12c8a1a3
JG
81 }
82
83509119 83 bt_object_init(stream_class, bt_ctf_stream_class_destroy);
11b0cdc8
JG
84 return stream_class;
85
11b0cdc8 86error:
83509119 87 BT_PUT(stream_class);
11b0cdc8
JG
88 return stream_class;
89}
90
142c5610
JG
91struct bt_ctf_trace *bt_ctf_stream_class_get_trace(
92 struct bt_ctf_stream_class *stream_class)
93{
94 struct bt_ctf_trace *trace = NULL;
95
96 if (!stream_class) {
97 goto end;
98 }
99
100 trace = stream_class->trace;
101 if (trace) {
83509119 102 bt_get(trace);
142c5610
JG
103 }
104end:
105 return trace;
106}
107
69dc4535
JG
108const char *bt_ctf_stream_class_get_name(
109 struct bt_ctf_stream_class *stream_class)
110{
111 const char *name = NULL;
112
113 if (!stream_class) {
114 goto end;
115 }
116
117 name = stream_class->name->str;
118end:
119 return name;
120}
121
3ea33115
JG
122int bt_ctf_stream_class_set_name(struct bt_ctf_stream_class *stream_class,
123 const char *name)
124{
125 int ret = 0;
126
127 if (!stream_class || stream_class->frozen) {
128 ret = -1;
129 goto end;
130 }
131
132 g_string_assign(stream_class->name, name);
133end:
134 return ret;
135}
136
2f100782
JG
137struct bt_ctf_clock *bt_ctf_stream_class_get_clock(
138 struct bt_ctf_stream_class *stream_class)
139{
140 struct bt_ctf_clock *clock = NULL;
141
142 if (!stream_class || !stream_class->clock) {
143 goto end;
144 }
145
146 clock = stream_class->clock;
83509119 147 bt_get(clock);
2f100782
JG
148end:
149 return clock;
150}
151
11b0cdc8
JG
152int bt_ctf_stream_class_set_clock(struct bt_ctf_stream_class *stream_class,
153 struct bt_ctf_clock *clock)
154{
155 int ret = 0;
eee752e5 156 struct bt_ctf_field_type *timestamp_field = NULL;
11b0cdc8
JG
157
158 if (!stream_class || !clock || stream_class->frozen) {
159 ret = -1;
160 goto end;
161 }
162
eee752e5
JG
163 /*
164 * Look for a "timestamp" field in the stream class' event header type
165 * and map the stream's clock to that field if no current mapping is
166 * currently set.
167 */
168 timestamp_field = bt_ctf_field_type_structure_get_field_type_by_name(
169 stream_class->event_header_type, "timestamp");
170 if (timestamp_field) {
171 struct bt_ctf_clock *mapped_clock;
172
173 mapped_clock = bt_ctf_field_type_integer_get_mapped_clock(
174 timestamp_field);
175 if (mapped_clock) {
83509119 176 bt_put(mapped_clock);
eee752e5
JG
177 goto end;
178 }
179
180 ret = bt_ctf_field_type_integer_set_mapped_clock(
181 timestamp_field, clock);
182 if (ret) {
183 goto end;
184 }
185 }
186
11b0cdc8 187 if (stream_class->clock) {
83509119 188 bt_put(stream_class->clock);
11b0cdc8
JG
189 }
190
191 stream_class->clock = clock;
83509119 192 bt_get(clock);
11b0cdc8 193end:
eee752e5 194 if (timestamp_field) {
83509119 195 bt_put(timestamp_field);
eee752e5 196 }
11b0cdc8
JG
197 return ret;
198}
199
2f100782
JG
200int64_t bt_ctf_stream_class_get_id(struct bt_ctf_stream_class *stream_class)
201{
202 int64_t ret;
203
204 if (!stream_class || !stream_class->id_set) {
205 ret = -1;
206 goto end;
207 }
208
209 ret = (int64_t) stream_class->id;
210end:
211 return ret;
212}
213
5ca83563
JG
214BT_HIDDEN
215int _bt_ctf_stream_class_set_id(
216 struct bt_ctf_stream_class *stream_class, uint32_t id)
217{
218 stream_class->id = id;
219 stream_class->id_set = 1;
220 return 0;
221}
222
29664b2a
PP
223struct event_class_set_stream_id_data {
224 uint32_t stream_id;
225 int ret;
226};
227
228static
229void event_class_set_stream_id(gpointer event_class, gpointer data)
230{
231 struct event_class_set_stream_id_data *typed_data = data;
232
233 typed_data->ret |= bt_ctf_event_class_set_stream_id(event_class,
234 typed_data->stream_id);
235}
236
237BT_HIDDEN
238int bt_ctf_stream_class_set_id_no_check(
239 struct bt_ctf_stream_class *stream_class, uint32_t id)
2f100782
JG
240{
241 int ret = 0;
29664b2a
PP
242 struct event_class_set_stream_id_data data =
243 { .stream_id = id, .ret = 0 };
2f100782 244
29664b2a
PP
245 /*
246 * Make sure all event classes have their "stream_id" attribute
247 * set to this value.
248 */
249 g_ptr_array_foreach(stream_class->event_classes,
250 event_class_set_stream_id, &data);
251 ret = data.ret;
252 if (ret) {
2f100782
JG
253 goto end;
254 }
255
5ca83563
JG
256 ret = _bt_ctf_stream_class_set_id(stream_class, id);
257 if (ret) {
258 goto end;
259 }
2f100782
JG
260end:
261 return ret;
262}
263
29664b2a
PP
264int bt_ctf_stream_class_set_id(struct bt_ctf_stream_class *stream_class,
265 uint32_t id)
266{
267 int ret = 0;
268
269 if (!stream_class || stream_class->frozen) {
270 ret = -1;
271 goto end;
272 }
273
274 ret = bt_ctf_stream_class_set_id_no_check(stream_class, id);
275end:
276 return ret;
277}
278
0d23acbe
PP
279static
280void event_class_exists(gpointer element, gpointer query)
281{
282 struct bt_ctf_event_class *event_class_a = element;
283 struct search_query *search_query = query;
284 struct bt_ctf_event_class *event_class_b = search_query->value;
285 int64_t id_a, id_b;
286
287 if (search_query->value == element) {
288 search_query->found = 1;
289 goto end;
290 }
291
292 /*
293 * Two event classes cannot share the same name in a given
294 * stream class.
295 */
296 if (!strcmp(bt_ctf_event_class_get_name(event_class_a),
297 bt_ctf_event_class_get_name(event_class_b))) {
298 search_query->found = 1;
299 goto end;
300 }
301
302 /*
303 * Two event classes cannot share the same ID in a given
304 * stream class.
305 */
306 id_a = bt_ctf_event_class_get_id(event_class_a);
307 id_b = bt_ctf_event_class_get_id(event_class_b);
308
309 if (id_a < 0 || id_b < 0) {
310 /* at least one ID is not set: will be automatically set later */
311 goto end;
312 }
313
314 if (id_a == id_b) {
315 search_query->found = 1;
316 goto end;
317 }
318
319end:
320 return;
321}
322
11b0cdc8
JG
323int bt_ctf_stream_class_add_event_class(
324 struct bt_ctf_stream_class *stream_class,
325 struct bt_ctf_event_class *event_class)
326{
327 int ret = 0;
2f100782 328 int64_t event_id;
11b0cdc8
JG
329
330 if (!stream_class || !event_class) {
331 ret = -1;
332 goto end;
333 }
334
335 /* Check for duplicate event classes */
336 struct search_query query = { .value = event_class, .found = 0 };
0d23acbe
PP
337 g_ptr_array_foreach(stream_class->event_classes, event_class_exists,
338 &query);
11b0cdc8
JG
339 if (query.found) {
340 ret = -1;
341 goto end;
342 }
343
26079216
JG
344 /*
345 * Resolve the event's sequence length and variant tags if the
346 * stream is already associated with a trace. Otherwise, this
347 * validation will be performed once the stream is registered
348 * to a trace.
349 */
350 if (stream_class->trace) {
351 ret = bt_ctf_event_class_resolve_types(event_class,
352 stream_class->trace, stream_class);
353 if (ret) {
354 goto end;
355 }
356 }
357
2f100782
JG
358 /* Only set an event id if none was explicitly set before */
359 event_id = bt_ctf_event_class_get_id(event_class);
360 if (event_id < 0) {
361 if (bt_ctf_event_class_set_id(event_class,
362 stream_class->next_event_id++)) {
363 ret = -1;
364 goto end;
365 }
366 }
367
368 ret = bt_ctf_event_class_set_stream_class(event_class, stream_class);
369 if (ret) {
11b0cdc8
JG
370 goto end;
371 }
372
29664b2a
PP
373 ret = bt_ctf_event_class_set_stream_id(event_class, stream_class->id);
374 if (ret) {
375 goto end;
376 }
377
83509119 378 bt_get(event_class);
11b0cdc8 379 g_ptr_array_add(stream_class->event_classes, event_class);
58203827 380 bt_ctf_event_class_freeze(event_class);
5ca83563
JG
381
382 if (stream_class->byte_order) {
383 /*
384 * Only set native byte order if it has been initialized
385 * when the stream class was added to a trace.
386 *
387 * If not set here, this will be set when the stream
388 * classe will be added to a trace.
389 */
390 bt_ctf_event_class_set_native_byte_order(event_class,
391 stream_class->byte_order);
392 }
11b0cdc8
JG
393end:
394 return ret;
395}
396
074ee56d 397int bt_ctf_stream_class_get_event_class_count(
69dc4535
JG
398 struct bt_ctf_stream_class *stream_class)
399{
074ee56d 400 int ret;
69dc4535
JG
401
402 if (!stream_class) {
403 ret = -1;
404 goto end;
405 }
406
074ee56d 407 ret = (int) stream_class->event_classes->len;
69dc4535
JG
408end:
409 return ret;
410}
411
412struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class(
074ee56d 413 struct bt_ctf_stream_class *stream_class, int index)
69dc4535
JG
414{
415 struct bt_ctf_event_class *event_class = NULL;
416
074ee56d
JG
417 if (!stream_class || index < 0 ||
418 index >= stream_class->event_classes->len) {
69dc4535
JG
419 goto end;
420 }
421
422 event_class = g_ptr_array_index(stream_class->event_classes, index);
83509119 423 bt_get(event_class);
69dc4535
JG
424end:
425 return event_class;
426}
427
428struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class_by_name(
429 struct bt_ctf_stream_class *stream_class, const char *name)
430{
431 size_t i;
69dc4535
JG
432 struct bt_ctf_event_class *event_class = NULL;
433
434 if (!stream_class || !name) {
435 goto end;
436 }
437
69dc4535 438 for (i = 0; i < stream_class->event_classes->len; i++) {
b8248cc0 439 struct bt_ctf_event_class *cur_event_class =
69dc4535 440 g_ptr_array_index(stream_class->event_classes, i);
b8248cc0
PP
441 const char *cur_event_class_name =
442 bt_ctf_event_class_get_name(cur_event_class);
69dc4535 443
b8248cc0
PP
444 if (!strcmp(name, cur_event_class_name)) {
445 event_class = cur_event_class;
83509119 446 bt_get(event_class);
69dc4535
JG
447 goto end;
448 }
449 }
450end:
451 return event_class;
452}
453
0863f950
PP
454struct bt_ctf_event_class *bt_ctf_stream_class_get_event_class_by_id(
455 struct bt_ctf_stream_class *stream_class, uint32_t id)
456{
457 size_t i;
458 struct bt_ctf_event_class *event_class = NULL;
459
460 if (!stream_class) {
461 goto end;
462 }
463
464 for (i = 0; i < stream_class->event_classes->len; i++) {
465 struct bt_ctf_event_class *current_event_class =
466 g_ptr_array_index(stream_class->event_classes, i);
467
468 if (bt_ctf_event_class_get_id(current_event_class) == id) {
469 event_class = current_event_class;
83509119 470 bt_get(event_class);
0863f950
PP
471 goto end;
472 }
473 }
474end:
475 return event_class;
476}
477
12c8a1a3
JG
478struct bt_ctf_field_type *bt_ctf_stream_class_get_packet_context_type(
479 struct bt_ctf_stream_class *stream_class)
480{
481 struct bt_ctf_field_type *ret = NULL;
482
483 if (!stream_class) {
484 goto end;
485 }
486
487 assert(stream_class->packet_context_type);
83509119 488 bt_get(stream_class->packet_context_type);
12c8a1a3
JG
489 ret = stream_class->packet_context_type;
490end:
491 return ret;
492}
493
494int bt_ctf_stream_class_set_packet_context_type(
495 struct bt_ctf_stream_class *stream_class,
496 struct bt_ctf_field_type *packet_context_type)
497{
498 int ret = 0;
499
0a00bfa1 500 if (!stream_class || !packet_context_type || stream_class->frozen) {
12c8a1a3
JG
501 ret = -1;
502 goto end;
503 }
504
505 assert(stream_class->packet_context_type);
662e778c
JG
506 if (stream_class->packet_context_type == packet_context_type) {
507 goto end;
508 }
b34f4d90 509 if (bt_ctf_field_type_get_type_id(packet_context_type) !=
12c8a1a3
JG
510 CTF_TYPE_STRUCT) {
511 /* A packet context must be a structure */
512 ret = -1;
513 goto end;
514 }
515
83509119
JG
516 bt_put(stream_class->packet_context_type);
517 bt_get(packet_context_type);
12c8a1a3
JG
518 stream_class->packet_context_type = packet_context_type;
519end:
520 return ret;
521}
522
662e778c
JG
523struct bt_ctf_field_type *bt_ctf_stream_class_get_event_header_type(
524 struct bt_ctf_stream_class *stream_class)
525{
526 struct bt_ctf_field_type *ret = NULL;
527
528 if (!stream_class || !stream_class->event_header_type) {
529 goto end;
530 }
531
532 assert(stream_class->event_header_type);
83509119 533 bt_get(stream_class->event_header_type);
662e778c
JG
534 ret = stream_class->event_header_type;
535end:
536 return ret;
537}
538
539int bt_ctf_stream_class_set_event_header_type(
540 struct bt_ctf_stream_class *stream_class,
541 struct bt_ctf_field_type *event_header_type)
542{
543 int ret = 0;
544
545 if (!stream_class || !event_header_type || stream_class->frozen) {
546 ret = -1;
547 goto end;
548 }
549
550 assert(stream_class->event_header_type);
551 if (stream_class->event_header_type == event_header_type) {
552 goto end;
553 }
554 if (bt_ctf_field_type_get_type_id(event_header_type) !=
555 CTF_TYPE_STRUCT) {
556 /* An event header must be a structure */
557 ret = -1;
558 goto end;
559 }
560
83509119
JG
561 bt_put(stream_class->event_header_type);
562 bt_get(event_header_type);
662e778c
JG
563 stream_class->event_header_type = event_header_type;
564end:
565 return ret;
566}
567
af181248
JG
568struct bt_ctf_field_type *bt_ctf_stream_class_get_event_context_type(
569 struct bt_ctf_stream_class *stream_class)
570{
571 struct bt_ctf_field_type *ret = NULL;
572
573 if (!stream_class || !stream_class->event_context_type) {
574 goto end;
575 }
576
577 assert(stream_class->event_context_type);
83509119 578 bt_get(stream_class->event_context_type);
af181248
JG
579 ret = stream_class->event_context_type;
580end:
581 return ret;
582}
583
584int bt_ctf_stream_class_set_event_context_type(
585 struct bt_ctf_stream_class *stream_class,
586 struct bt_ctf_field_type *event_context_type)
587{
588 int ret = 0;
589
590 if (!stream_class || !event_context_type || stream_class->frozen) {
591 ret = -1;
592 goto end;
593 }
594
595 if (bt_ctf_field_type_get_type_id(event_context_type) !=
596 CTF_TYPE_STRUCT) {
597 /* A packet context must be a structure */
598 ret = -1;
599 goto end;
600 }
601
83509119
JG
602 bt_put(stream_class->event_context_type);
603 bt_get(event_context_type);
af181248
JG
604 stream_class->event_context_type = event_context_type;
605end:
606 return ret;
607}
608
11b0cdc8
JG
609void bt_ctf_stream_class_get(struct bt_ctf_stream_class *stream_class)
610{
83509119 611 bt_get(stream_class);
11b0cdc8
JG
612}
613
614void bt_ctf_stream_class_put(struct bt_ctf_stream_class *stream_class)
615{
83509119 616 bt_put(stream_class);
11b0cdc8
JG
617}
618
619BT_HIDDEN
620void bt_ctf_stream_class_freeze(struct bt_ctf_stream_class *stream_class)
621{
622 if (!stream_class) {
623 return;
624 }
625
626 stream_class->frozen = 1;
662e778c 627 bt_ctf_field_type_freeze(stream_class->event_header_type);
12c8a1a3 628 bt_ctf_field_type_freeze(stream_class->packet_context_type);
af181248 629 bt_ctf_field_type_freeze(stream_class->event_context_type);
11b0cdc8 630 bt_ctf_clock_freeze(stream_class->clock);
11b0cdc8
JG
631}
632
11b0cdc8
JG
633BT_HIDDEN
634int bt_ctf_stream_class_set_byte_order(struct bt_ctf_stream_class *stream_class,
635 enum bt_ctf_byte_order byte_order)
636{
5ca83563 637 int i, ret = 0;
c35a1669 638 int internal_byte_order;
11b0cdc8 639
c35a1669
JG
640 /* Note that "NATIVE" means the trace's endianness, not the host's. */
641 if (!stream_class || byte_order <= BT_CTF_BYTE_ORDER_UNKNOWN ||
5ca83563 642 byte_order > BT_CTF_BYTE_ORDER_NETWORK) {
c35a1669
JG
643 ret = -1;
644 goto end;
645 }
646
647 switch (byte_order) {
648 case BT_CTF_BYTE_ORDER_NETWORK:
649 case BT_CTF_BYTE_ORDER_BIG_ENDIAN:
650 internal_byte_order = BIG_ENDIAN;
651 break;
652 case BT_CTF_BYTE_ORDER_LITTLE_ENDIAN:
653 internal_byte_order = LITTLE_ENDIAN;
654 break;
655 default:
656 ret = -1;
11b0cdc8
JG
657 goto end;
658 }
c35a1669
JG
659
660 stream_class->byte_order = internal_byte_order;
5ca83563
JG
661
662 /* Set native byte order to little or big endian */
663 bt_ctf_field_type_set_native_byte_order(
664 stream_class->event_header_type, stream_class->byte_order);
665 bt_ctf_field_type_set_native_byte_order(
666 stream_class->packet_context_type, stream_class->byte_order);
667 bt_ctf_field_type_set_native_byte_order(
668 stream_class->event_context_type, stream_class->byte_order);
669
670 /* Set all events' native byte order */
671 for (i = 0; i < stream_class->event_classes->len; i++) {
672 bt_ctf_event_class_set_native_byte_order(
673 g_ptr_array_index(stream_class->event_classes, i),
674 stream_class->byte_order);
675 bt_ctf_event_class_freeze(
676 g_ptr_array_index(stream_class->event_classes, i));
677 }
11b0cdc8
JG
678end:
679 return ret;
680}
681
682BT_HIDDEN
683int bt_ctf_stream_class_serialize(struct bt_ctf_stream_class *stream_class,
684 struct metadata_context *context)
685{
2f100782 686 int64_t ret = 0;
11b0cdc8
JG
687 size_t i;
688
689 g_string_assign(context->field_name, "");
690 context->current_indentation_level = 1;
691 if (!stream_class->id_set) {
692 ret = -1;
693 goto end;
694 }
695
696 g_string_append_printf(context->string,
697 "stream {\n\tid = %" PRIu32 ";\n\tevent.header := ",
698 stream_class->id);
699 ret = bt_ctf_field_type_serialize(stream_class->event_header_type,
700 context);
701 if (ret) {
702 goto end;
703 }
704
705 g_string_append(context->string, ";\n\n\tpacket.context := ");
706 ret = bt_ctf_field_type_serialize(stream_class->packet_context_type,
707 context);
708 if (ret) {
709 goto end;
710 }
711
712 if (stream_class->event_context_type) {
713 g_string_append(context->string, ";\n\n\tevent.context := ");
714 ret = bt_ctf_field_type_serialize(
715 stream_class->event_context_type, context);
716 if (ret) {
717 goto end;
718 }
719 }
720
721 g_string_append(context->string, ";\n};\n\n");
11b0cdc8
JG
722 for (i = 0; i < stream_class->event_classes->len; i++) {
723 struct bt_ctf_event_class *event_class =
724 stream_class->event_classes->pdata[i];
725
11b0cdc8
JG
726 ret = bt_ctf_event_class_serialize(event_class, context);
727 if (ret) {
728 goto end;
729 }
730 }
731end:
732 context->current_indentation_level = 0;
733 return ret;
734}
735
d3814b54
JG
736BT_HIDDEN
737int bt_ctf_stream_class_set_trace(struct bt_ctf_stream_class *stream_class,
738 struct bt_ctf_trace *trace)
739{
740 int ret = 0;
741
742 if (!stream_class) {
743 ret = -1;
744 goto end;
745 }
746
747 if (stream_class->trace && trace) {
748 /* Already attached to a trace */
749 ret = -1;
750 goto end;
751 }
752
753 stream_class->trace = trace;
754end:
755 return ret;
756}
757
11b0cdc8 758static
83509119 759void bt_ctf_stream_class_destroy(struct bt_object *obj)
11b0cdc8
JG
760{
761 struct bt_ctf_stream_class *stream_class;
762
83509119
JG
763 stream_class = container_of(obj, struct bt_ctf_stream_class, base);
764 bt_put(stream_class->clock);
11b0cdc8
JG
765
766 if (stream_class->event_classes) {
2f100782
JG
767 size_t i;
768
769 /* Unregister this stream class from the event classes */
770 for (i = 0; i < stream_class->event_classes->len; i++) {
771 struct bt_ctf_event_class *event_class =
772 g_ptr_array_index(stream_class->event_classes,
773 i);
774
775 bt_ctf_event_class_set_stream_class(event_class, NULL);
776 }
777
11b0cdc8
JG
778 g_ptr_array_free(stream_class->event_classes, TRUE);
779 }
780
781 if (stream_class->name) {
782 g_string_free(stream_class->name, TRUE);
783 }
784
83509119
JG
785 bt_put(stream_class->event_header_type);
786 bt_put(stream_class->packet_context_type);
787 bt_put(stream_class->event_context_type);
11b0cdc8
JG
788 g_free(stream_class);
789}
790
791static
662e778c 792int init_event_header(struct bt_ctf_stream_class *stream_class)
11b0cdc8
JG
793{
794 int ret = 0;
795 struct bt_ctf_field_type *event_header_type =
796 bt_ctf_field_type_structure_create();
797 struct bt_ctf_field_type *_uint32_t =
798 get_field_type(FIELD_TYPE_ALIAS_UINT32_T);
799 struct bt_ctf_field_type *_uint64_t =
800 get_field_type(FIELD_TYPE_ALIAS_UINT64_T);
801
802 if (!event_header_type) {
803 ret = -1;
804 goto end;
805 }
806
11b0cdc8
JG
807 ret = bt_ctf_field_type_structure_add_field(event_header_type,
808 _uint32_t, "id");
809 if (ret) {
810 goto end;
811 }
812
813 ret = bt_ctf_field_type_structure_add_field(event_header_type,
814 _uint64_t, "timestamp");
815 if (ret) {
816 goto end;
817 }
818
662e778c 819 if (stream_class->event_header_type) {
83509119 820 bt_put(stream_class->event_header_type);
de876b7f 821 }
662e778c 822 stream_class->event_header_type = event_header_type;
11b0cdc8
JG
823end:
824 if (ret) {
83509119 825 bt_put(event_header_type);
11b0cdc8
JG
826 }
827
83509119
JG
828 bt_put(_uint32_t);
829 bt_put(_uint64_t);
11b0cdc8
JG
830 return ret;
831}
832
833static
662e778c 834int init_packet_context(struct bt_ctf_stream_class *stream_class)
11b0cdc8
JG
835{
836 int ret = 0;
837 struct bt_ctf_field_type *packet_context_type =
838 bt_ctf_field_type_structure_create();
839 struct bt_ctf_field_type *_uint64_t =
840 get_field_type(FIELD_TYPE_ALIAS_UINT64_T);
841
842 if (!packet_context_type) {
843 ret = -1;
844 goto end;
845 }
846
847 /*
848 * We create a stream packet context as proposed in the CTF
849 * specification.
850 */
11b0cdc8
JG
851 ret = bt_ctf_field_type_structure_add_field(packet_context_type,
852 _uint64_t, "timestamp_begin");
853 if (ret) {
854 goto end;
855 }
856
857 ret = bt_ctf_field_type_structure_add_field(packet_context_type,
858 _uint64_t, "timestamp_end");
859 if (ret) {
860 goto end;
861 }
862
863 ret = bt_ctf_field_type_structure_add_field(packet_context_type,
864 _uint64_t, "content_size");
865 if (ret) {
866 goto end;
867 }
868
869 ret = bt_ctf_field_type_structure_add_field(packet_context_type,
870 _uint64_t, "packet_size");
871 if (ret) {
872 goto end;
873 }
874
875 ret = bt_ctf_field_type_structure_add_field(packet_context_type,
876 _uint64_t, "events_discarded");
877 if (ret) {
878 goto end;
879 }
880
83509119 881 bt_put(stream_class->packet_context_type);
11b0cdc8 882 stream_class->packet_context_type = packet_context_type;
11b0cdc8
JG
883end:
884 if (ret) {
83509119 885 bt_put(packet_context_type);
11b0cdc8
JG
886 goto end;
887 }
888
83509119 889 bt_put(_uint64_t);
11b0cdc8
JG
890 return ret;
891}
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