Fix: get encoding for char arrays and sequences
[babeltrace.git] / formats / ctf / events.c
CommitLineData
9843982d 1/*
5c5facc7 2 * ctf/events.c
9843982d
JD
3 *
4 * Babeltrace Library
5 *
6 * Copyright 2011-2012 EfficiOS Inc. and Linux Foundation
7 *
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * Julien Desfossez <julien.desfossez@efficios.com>
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
20 */
21
22#include <babeltrace/babeltrace.h>
23#include <babeltrace/format.h>
24#include <babeltrace/ctf/events.h>
25#include <babeltrace/ctf-ir/metadata.h>
e4195791
MD
26#include <babeltrace/prio_heap.h>
27#include <babeltrace/iterator-internal.h>
28#include <babeltrace/ctf/events-internal.h>
29#include <babeltrace/ctf/metadata.h>
9843982d
JD
30#include <glib.h>
31
c34ea0fa
MD
32#include "events-private.h"
33
9843982d
JD
34/*
35 * thread local storage to store the last error that occured
36 * while reading a field, this variable must be accessed by
b330165c 37 * bt_ctf_field_get_error only
9843982d
JD
38 */
39__thread int bt_ctf_last_field_error = 0;
40
c50d2a7a 41const struct definition *bt_ctf_get_top_level_scope(const struct bt_ctf_event *ctf_event,
9843982d
JD
42 enum bt_ctf_scope scope)
43{
554cf424
MD
44 const struct definition *tmp = NULL;
45 const struct ctf_event_definition *event;
9843982d 46
7f89ddce
MD
47 if (!ctf_event)
48 return NULL;
49
50 event = ctf_event->parent;
9843982d
JD
51 switch (scope) {
52 case BT_TRACE_PACKET_HEADER:
53 if (!event->stream)
54 goto error;
55 if (event->stream->trace_packet_header)
56 tmp = &event->stream->trace_packet_header->p;
57 break;
58 case BT_STREAM_PACKET_CONTEXT:
59 if (!event->stream)
60 goto error;
61 if (event->stream->stream_packet_context)
62 tmp = &event->stream->stream_packet_context->p;
63 break;
64 case BT_STREAM_EVENT_HEADER:
65 if (!event->stream)
66 goto error;
67 if (event->stream->stream_event_header)
68 tmp = &event->stream->stream_event_header->p;
69 break;
70 case BT_STREAM_EVENT_CONTEXT:
71 if (!event->stream)
72 goto error;
73 if (event->stream->stream_event_context)
74 tmp = &event->stream->stream_event_context->p;
75 break;
76 case BT_EVENT_CONTEXT:
8a4722b0
JD
77 if (event->event_context)
78 tmp = &event->event_context->p;
9843982d
JD
79 break;
80 case BT_EVENT_FIELDS:
8a4722b0
JD
81 if (event->event_fields)
82 tmp = &event->event_fields->p;
9843982d
JD
83 break;
84 }
85 return tmp;
86
87error:
88 return NULL;
89}
90
c50d2a7a 91const struct definition *bt_ctf_get_field(const struct bt_ctf_event *ctf_event,
04ae3991 92 const struct definition *scope,
9843982d
JD
93 const char *field)
94{
554cf424 95 const struct definition *def;
300d317a 96 char *field_underscore;
9843982d 97
7f89ddce
MD
98 if (!ctf_event || !scope || !field)
99 return NULL;
100
101 def = lookup_definition(scope, field);
102 /*
103 * optionally a field can have an underscore prefix, try
104 * to lookup the field with this prefix if it failed
105 */
106 if (!def) {
107 field_underscore = g_new(char, strlen(field) + 2);
108 field_underscore[0] = '_';
109 strcpy(&field_underscore[1], field);
110 def = lookup_definition(scope, field_underscore);
111 g_free(field_underscore);
9843982d 112 }
b14d90be 113 if (bt_ctf_field_type(bt_ctf_get_decl_from_def(def)) == CTF_TYPE_VARIANT) {
554cf424 114 const struct definition_variant *variant_definition;
7f89ddce 115 variant_definition = container_of(def,
554cf424 116 const struct definition_variant, p);
7f89ddce
MD
117 return variant_definition->current_field;
118 }
119 return def;
9843982d
JD
120}
121
c50d2a7a 122const struct definition *bt_ctf_get_index(const struct bt_ctf_event *ctf_event,
04ae3991 123 const struct definition *field,
9843982d
JD
124 unsigned int index)
125{
126 struct definition *ret = NULL;
127
7f89ddce
MD
128 if (!ctf_event || !field)
129 return NULL;
130
b14d90be 131 if (bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_ARRAY) {
9843982d
JD
132 struct definition_array *array_definition;
133 array_definition = container_of(field,
134 struct definition_array, p);
135 ret = array_index(array_definition, index);
b14d90be 136 } else if (bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_SEQUENCE) {
9843982d
JD
137 struct definition_sequence *sequence_definition;
138 sequence_definition = container_of(field,
139 struct definition_sequence, p);
140 ret = sequence_index(sequence_definition, index);
141 }
142 return ret;
143}
144
c50d2a7a 145const char *bt_ctf_event_name(const struct bt_ctf_event *ctf_event)
9843982d 146{
554cf424
MD
147 const struct ctf_event_declaration *event_class;
148 const struct ctf_stream_declaration *stream_class;
149 const struct ctf_event_definition *event;
9843982d 150
7f89ddce 151 if (!ctf_event)
9843982d 152 return NULL;
7f89ddce
MD
153
154 event = ctf_event->parent;
9843982d
JD
155 stream_class = event->stream->stream_class;
156 event_class = g_ptr_array_index(stream_class->events_by_id,
157 event->stream->event_id);
158 return g_quark_to_string(event_class->name);
159}
160
161const char *bt_ctf_field_name(const struct definition *def)
162{
7f89ddce
MD
163 if (!def)
164 return NULL;
165
166 return rem_(g_quark_to_string(def->name));
9843982d
JD
167}
168
2bdfa4cf 169enum ctf_type_id bt_ctf_field_type(const struct declaration *decl)
9843982d 170{
2bdfa4cf 171 if (!decl)
7f89ddce
MD
172 return CTF_TYPE_UNKNOWN;
173
2bdfa4cf 174 return decl->id;
9843982d
JD
175}
176
c50d2a7a 177int bt_ctf_get_field_list(const struct bt_ctf_event *ctf_event,
04ae3991 178 const struct definition *scope,
9843982d
JD
179 struct definition const * const **list,
180 unsigned int *count)
181{
7f89ddce
MD
182 if (!ctf_event || !scope || !list || !count)
183 return -EINVAL;
184
b14d90be 185 switch (bt_ctf_field_type(bt_ctf_get_decl_from_def(scope))) {
9843982d
JD
186 case CTF_TYPE_INTEGER:
187 case CTF_TYPE_FLOAT:
188 case CTF_TYPE_STRING:
189 case CTF_TYPE_ENUM:
190 goto error;
191 case CTF_TYPE_STRUCT:
192 {
04ae3991 193 const struct definition_struct *def_struct;
9843982d 194
04ae3991 195 def_struct = container_of(scope, const struct definition_struct, p);
9843982d
JD
196 if (!def_struct)
197 goto error;
198 if (def_struct->fields->pdata) {
199 *list = (struct definition const* const*) def_struct->fields->pdata;
200 *count = def_struct->fields->len;
201 goto end;
202 } else {
203 goto error;
204 }
7f89ddce 205 break;
9843982d
JD
206 }
207 case CTF_TYPE_UNTAGGED_VARIANT:
208 goto error;
209 case CTF_TYPE_VARIANT:
210 {
04ae3991 211 const struct definition_variant *def_variant;
9843982d 212
04ae3991 213 def_variant = container_of(scope, const struct definition_variant, p);
9843982d
JD
214 if (!def_variant)
215 goto error;
216 if (def_variant->fields->pdata) {
217 *list = (struct definition const* const*) def_variant->fields->pdata;
218 *count = def_variant->fields->len;
219 goto end;
220 } else {
221 goto error;
222 }
7f89ddce 223 break;
9843982d
JD
224 }
225 case CTF_TYPE_ARRAY:
226 {
04ae3991 227 const struct definition_array *def_array;
9843982d 228
04ae3991 229 def_array = container_of(scope, const struct definition_array, p);
9843982d
JD
230 if (!def_array)
231 goto error;
232 if (def_array->elems->pdata) {
233 *list = (struct definition const* const*) def_array->elems->pdata;
234 *count = def_array->elems->len;
235 goto end;
236 } else {
237 goto error;
238 }
7f89ddce 239 break;
9843982d
JD
240 }
241 case CTF_TYPE_SEQUENCE:
242 {
04ae3991 243 const struct definition_sequence *def_sequence;
9843982d 244
04ae3991 245 def_sequence = container_of(scope, const struct definition_sequence, p);
9843982d
JD
246 if (!def_sequence)
247 goto error;
248 if (def_sequence->elems->pdata) {
249 *list = (struct definition const* const*) def_sequence->elems->pdata;
250 *count = def_sequence->elems->len;
251 goto end;
252 } else {
253 goto error;
254 }
7f89ddce 255 break;
9843982d
JD
256 }
257 default:
258 break;
259 }
260
261end:
262 return 0;
263
264error:
265 *list = NULL;
266 *count = 0;
267 return -1;
268}
269
c50d2a7a 270struct bt_context *bt_ctf_event_get_context(const struct bt_ctf_event *ctf_event)
98a04903
JD
271{
272 struct bt_context *ret = NULL;
554cf424
MD
273 const struct ctf_file_stream *cfs;
274 const struct ctf_trace *trace;
275 const struct ctf_event_definition *event;
98a04903 276
7f89ddce
MD
277 if (!ctf_event)
278 return NULL;
279
280 event = ctf_event->parent;
554cf424 281 cfs = container_of(event->stream, const struct ctf_file_stream,
98a04903 282 parent);
8b8dc96e 283 trace = cfs->parent.stream_class->trace;
98a04903
JD
284 if (trace->ctx)
285 ret = trace->ctx;
286
287 return ret;
288}
289
c50d2a7a 290int bt_ctf_event_get_handle_id(const struct bt_ctf_event *ctf_event)
98a04903
JD
291{
292 int ret = -1;
554cf424
MD
293 const struct ctf_file_stream *cfs;
294 const struct ctf_trace *trace;
295 const struct ctf_event_definition *event;
7f89ddce
MD
296
297 if (!ctf_event)
298 return -EINVAL;
98a04903 299
7f89ddce 300 event = ctf_event->parent;
554cf424 301 cfs = container_of(event->stream, const struct ctf_file_stream,
98a04903 302 parent);
8b8dc96e 303 trace = cfs->parent.stream_class->trace;
98a04903
JD
304 if (trace->handle)
305 ret = trace->handle->id;
306
307 return ret;
308}
309
d40ee8ec 310uint64_t bt_ctf_get_timestamp(const struct bt_ctf_event *ctf_event)
9843982d 311{
554cf424 312 const struct ctf_event_definition *event;
7f89ddce
MD
313
314 if (!ctf_event)
315 return -1ULL;
316
317 event = ctf_event->parent;
9843982d 318 if (event && event->stream->has_timestamp)
03798a93 319 return event->stream->real_timestamp;
9843982d 320 else
57f3005e
SJD
321 return -1ULL;
322}
323
d40ee8ec 324uint64_t bt_ctf_get_cycles(const struct bt_ctf_event *ctf_event)
57f3005e 325{
554cf424 326 const struct ctf_event_definition *event;
7f89ddce
MD
327
328 if (!ctf_event)
329 return -1ULL;
330
331 event = ctf_event->parent;
c34ea0fa 332 if (event && event->stream->has_timestamp)
03798a93 333 return event->stream->cycles_timestamp;
c34ea0fa 334 else
57f3005e 335 return -1ULL;
9843982d
JD
336}
337
338static void bt_ctf_field_set_error(int error)
339{
340 bt_ctf_last_field_error = error;
341}
342
343int bt_ctf_field_get_error(void)
344{
345 int ret;
346 ret = bt_ctf_last_field_error;
347 bt_ctf_last_field_error = 0;
348
349 return ret;
350}
351
554cf424
MD
352static const struct declaration_integer *
353get_declaration_integer(const struct declaration *decl)
2bdfa4cf 354{
554cf424
MD
355 if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_INTEGER)
356 return NULL;
357 return container_of(decl, const struct declaration_integer, p);
2bdfa4cf
JD
358}
359
554cf424
MD
360static const struct declaration_string *
361get_declaration_string(const struct declaration *decl)
2bdfa4cf 362{
554cf424
MD
363 if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_STRING)
364 return NULL;
365 return container_of(decl, const struct declaration_string, p);
2bdfa4cf
JD
366}
367
554cf424
MD
368static const struct declaration_array *
369get_declaration_array(const struct declaration *decl)
2bdfa4cf 370{
554cf424
MD
371 if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_ARRAY)
372 return NULL;
373 return container_of(decl, const struct declaration_array, p);
2bdfa4cf
JD
374}
375
c22b9327
JD
376static const struct declaration_sequence *
377get_declaration_sequence(const struct declaration *decl)
378{
379 if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_SEQUENCE)
380 return NULL;
381 return container_of(decl, const struct declaration_sequence, p);
382}
383
2bdfa4cf 384int bt_ctf_get_int_signedness(const struct declaration *decl)
8673030f 385{
554cf424 386 const struct declaration_integer *integer;
8673030f 387
2bdfa4cf 388 integer = get_declaration_integer(decl);
554cf424 389 if (!integer) {
8673030f 390 bt_ctf_field_set_error(-EINVAL);
554cf424 391 return -EINVAL;
8673030f 392 }
554cf424 393 return integer->signedness;
8673030f
JD
394}
395
2bdfa4cf 396int bt_ctf_get_int_base(const struct declaration *decl)
8673030f 397{
554cf424 398 const struct declaration_integer *integer;
8673030f 399
2bdfa4cf 400 integer = get_declaration_integer(decl);
554cf424 401 if (!integer) {
8673030f 402 bt_ctf_field_set_error(-EINVAL);
554cf424 403 return -EINVAL;
8673030f 404 }
554cf424 405 return integer->base;
8673030f
JD
406}
407
2bdfa4cf 408int bt_ctf_get_int_byte_order(const struct declaration *decl)
8673030f 409{
554cf424 410 const struct declaration_integer *integer;
8673030f 411
2bdfa4cf 412 integer = get_declaration_integer(decl);
554cf424 413 if (!integer) {
8673030f 414 bt_ctf_field_set_error(-EINVAL);
554cf424 415 return -EINVAL;
8673030f 416 }
554cf424 417 return integer->byte_order;
8673030f
JD
418}
419
2bdfa4cf 420ssize_t bt_ctf_get_int_len(const struct declaration *decl)
fef0e521 421{
554cf424 422 const struct declaration_integer *integer;
fef0e521 423
2bdfa4cf 424 integer = get_declaration_integer(decl);
554cf424 425 if (!integer) {
fef0e521 426 bt_ctf_field_set_error(-EINVAL);
554cf424 427 return -EINVAL;
fef0e521 428 }
554cf424 429 return (ssize_t) integer->len;
fef0e521
MD
430}
431
4d25c350
MD
432const struct definition *bt_ctf_get_enum_int(const struct definition *field)
433{
554cf424 434 const struct definition_enum *def_enum;
4d25c350 435
b14d90be 436 if (!field || bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) != CTF_TYPE_ENUM) {
4d25c350
MD
437 bt_ctf_field_set_error(-EINVAL);
438 return NULL;
439 }
554cf424 440 def_enum = container_of(field, const struct definition_enum, p);
4d25c350
MD
441 return &def_enum->integer->p;
442}
443
444const char *bt_ctf_get_enum_str(const struct definition *field)
445{
554cf424
MD
446 const struct definition_enum *def_enum;
447 const struct declaration_enum *decl_enum;
4d25c350
MD
448 GArray *array;
449 const char *ret;
450
b14d90be 451 if (!field || bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) != CTF_TYPE_ENUM) {
4d25c350
MD
452 bt_ctf_field_set_error(-EINVAL);
453 return NULL;
454 }
554cf424 455 def_enum = container_of(field, const struct definition_enum, p);
4d25c350
MD
456 decl_enum = def_enum->declaration;
457 if (get_int_signedness(&def_enum->integer->p)) {
458 array = enum_int_to_quark_set(decl_enum,
459 get_signed_int(&def_enum->integer->p));
460 } else {
461 array = enum_uint_to_quark_set(decl_enum,
462 get_unsigned_int(&def_enum->integer->p));
463 }
464 if (!array) {
465 bt_ctf_field_set_error(-ENOENT);
466 return NULL;
467 }
468
469 if (array->len == 0) {
470 g_array_unref(array);
471 bt_ctf_field_set_error(-ENOENT);
472 return NULL;
473 }
474 /* Return first string. Arbitrary choice. */
475 ret = g_quark_to_string(g_array_index(array, GQuark, 0));
476 g_array_unref(array);
477 return ret;
478}
479
2bdfa4cf 480enum ctf_string_encoding bt_ctf_get_encoding(const struct declaration *decl)
8673030f
JD
481{
482 enum ctf_string_encoding ret = 0;
c22b9327 483 enum ctf_type_id type;
554cf424
MD
484 const struct declaration_integer *integer;
485 const struct declaration_string *string;
c22b9327
JD
486 const struct declaration_array *array;
487 const struct declaration_sequence *sequence;
8673030f 488
2bdfa4cf 489 if (!decl)
7f89ddce 490 goto error;
8673030f 491
c22b9327
JD
492 type = bt_ctf_field_type(decl);
493
494 switch (type) {
495 case CTF_TYPE_ARRAY:
496 array = get_declaration_array(decl);
497 if (!array)
2bdfa4cf 498 goto error;
c22b9327
JD
499 integer = get_declaration_integer(array->elem);
500 if (!integer)
501 goto error;
502 ret = integer->encoding;
503 break;
504 case CTF_TYPE_SEQUENCE:
505 sequence = get_declaration_sequence(decl);
506 if (!sequence)
507 goto error;
508 integer = get_declaration_integer(sequence->elem);
509 if (!integer)
510 goto error;
511 ret = integer->encoding;
512 break;
513 case CTF_TYPE_STRING:
2bdfa4cf 514 string = get_declaration_string(decl);
c22b9327 515 if (!string)
2bdfa4cf 516 goto error;
c22b9327
JD
517 ret = string->encoding;
518 break;
519 case CTF_TYPE_INTEGER:
520 integer = get_declaration_integer(decl);
521 if (!integer)
522 goto error;
523 ret = integer->encoding;
524 break;
525 default:
8673030f 526 goto error;
2bdfa4cf 527 }
8673030f
JD
528 return ret;
529
530error:
531 bt_ctf_field_set_error(-EINVAL);
532 return -1;
533}
534
2bdfa4cf 535int bt_ctf_get_array_len(const struct declaration *decl)
8673030f 536{
554cf424 537 const struct declaration_array *array;
8673030f 538
554cf424
MD
539 array = get_declaration_array(decl);
540 if (!array)
2bdfa4cf 541 goto error;
554cf424 542 return array->len;
2bdfa4cf
JD
543
544error:
545 bt_ctf_field_set_error(-EINVAL);
546 return -1;
8673030f
JD
547}
548
da320b83 549uint64_t bt_ctf_get_uint64(const struct definition *field)
9843982d 550{
63dd3817 551 uint64_t ret = 0;
9843982d 552
b14d90be 553 if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_INTEGER)
9843982d
JD
554 ret = get_unsigned_int(field);
555 else
556 bt_ctf_field_set_error(-EINVAL);
557
558 return ret;
559}
560
da320b83 561int64_t bt_ctf_get_int64(const struct definition *field)
9843982d 562{
63dd3817 563 int64_t ret = 0;
9843982d 564
b14d90be 565 if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_INTEGER)
9843982d
JD
566 ret = get_signed_int(field);
567 else
568 bt_ctf_field_set_error(-EINVAL);
569
570 return ret;
9843982d
JD
571}
572
da320b83 573char *bt_ctf_get_char_array(const struct definition *field)
9843982d
JD
574{
575 char *ret = NULL;
885885bf 576 GString *char_array;
9843982d 577
b14d90be 578 if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_ARRAY) {
885885bf
JD
579 char_array = get_char_array(field);
580 if (char_array) {
581 ret = char_array->str;
582 goto end;
583 }
584 }
585 bt_ctf_field_set_error(-EINVAL);
9843982d 586
885885bf 587end:
9843982d
JD
588 return ret;
589}
590
da320b83 591char *bt_ctf_get_string(const struct definition *field)
9843982d
JD
592{
593 char *ret = NULL;
594
b14d90be 595 if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_STRING)
9843982d
JD
596 ret = get_string(field);
597 else
598 bt_ctf_field_set_error(-EINVAL);
599
600 return ret;
601}
e003ab50
JD
602
603int bt_ctf_get_event_decl_list(int handle_id, struct bt_context *ctx,
64c2c249 604 struct bt_ctf_event_decl * const **list,
e003ab50
JD
605 unsigned int *count)
606{
607 struct bt_trace_handle *handle;
608 struct trace_descriptor *td;
609 struct ctf_trace *tin;
610
7f89ddce 611 if (!ctx || !list || !count)
e003ab50
JD
612 goto error;
613
614 handle = g_hash_table_lookup(ctx->trace_handles,
615 (gpointer) (unsigned long) handle_id);
616 if (!handle)
617 goto error;
618
619 td = handle->td;
620 tin = container_of(td, struct ctf_trace, parent);
621
64c2c249 622 *list = (struct bt_ctf_event_decl * const*) tin->event_declarations->pdata;
e003ab50
JD
623 *count = tin->event_declarations->len;
624 return 0;
625
626error:
627 return -1;
628}
629
630const char *bt_ctf_get_decl_event_name(const struct bt_ctf_event_decl *event)
631{
632 if (!event)
633 return NULL;
7f89ddce 634
e003ab50
JD
635 return g_quark_to_string(event->parent.name);
636}
64c2c249
JD
637
638int bt_ctf_get_decl_fields(struct bt_ctf_event_decl *event_decl,
639 enum bt_ctf_scope scope,
640 struct bt_ctf_field_decl const * const **list,
641 unsigned int *count)
642{
643 int i;
644 GArray *fields = NULL;
645 gpointer *ret_list = NULL;
646 GPtrArray *fields_array = NULL;
647 int ret = 0;
648 *count = 0;
649
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650 if (!event_decl || !list || !count)
651 return -EINVAL;
652
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653 switch (scope) {
654 case BT_EVENT_CONTEXT:
655 if (event_decl->context_decl) {
656 ret_list = event_decl->context_decl->pdata;
657 *count = event_decl->context_decl->len;
658 goto end;
659 }
660 event_decl->context_decl = g_ptr_array_new();
661 if (!event_decl->parent.context_decl) {
662 ret = -1;
663 goto end;
664 }
665 fields = event_decl->parent.context_decl->fields;
666 fields_array = event_decl->context_decl;
667 break;
668 case BT_EVENT_FIELDS:
669 if (event_decl->fields_decl) {
670 ret_list = event_decl->fields_decl->pdata;
671 *count = event_decl->fields_decl->len;
672 goto end;
673 }
674 event_decl->fields_decl = g_ptr_array_new();
675 if (!event_decl->parent.fields_decl) {
676 ret = -1;
677 goto end;
678 }
679 fields = event_decl->parent.fields_decl->fields;
680 fields_array = event_decl->fields_decl;
681 break;
682 case BT_STREAM_PACKET_CONTEXT:
683 if (event_decl->packet_context_decl) {
684 ret_list = event_decl->packet_context_decl->pdata;
685 *count = event_decl->packet_context_decl->len;
686 goto end;
687 }
688 event_decl->packet_context_decl = g_ptr_array_new();
689 if (!event_decl->parent.stream->packet_context_decl) {
690 ret = -1;
691 goto end;
692 }
693 fields = event_decl->parent.stream->packet_context_decl->fields;
694 fields_array = event_decl->packet_context_decl;
695 break;
696 case BT_STREAM_EVENT_CONTEXT:
697 if (event_decl->event_context_decl) {
698 ret_list = event_decl->event_context_decl->pdata;
699 *count = event_decl->event_context_decl->len;
700 goto end;
701 }
702 event_decl->event_context_decl = g_ptr_array_new();
703 if (!event_decl->parent.stream->event_context_decl) {
704 ret = -1;
705 goto end;
706 }
707 fields = event_decl->parent.stream->event_context_decl->fields;
708 fields_array = event_decl->event_context_decl;
709 break;
710 case BT_STREAM_EVENT_HEADER:
711 if (event_decl->event_header_decl) {
712 ret_list = event_decl->event_header_decl->pdata;
713 *count = event_decl->event_header_decl->len;
714 goto end;
715 }
716 event_decl->event_header_decl = g_ptr_array_new();
717 if (!event_decl->parent.stream->event_header_decl) {
718 ret = -1;
719 goto end;
720 }
721 fields = event_decl->parent.stream->event_header_decl->fields;
722 fields_array = event_decl->event_header_decl;
723 break;
724 case BT_TRACE_PACKET_HEADER:
725 if (event_decl->packet_header_decl) {
726 ret_list = event_decl->packet_header_decl->pdata;
727 *count = event_decl->packet_header_decl->len;
728 goto end;
729 }
730 event_decl->packet_header_decl = g_ptr_array_new();
731 if (!event_decl->parent.stream->trace->packet_header_decl) {
732 ret = -1;
733 goto end;
734 }
735 fields = event_decl->parent.stream->trace->packet_header_decl->fields;
736 fields_array = event_decl->packet_header_decl;
737 break;
738 }
739
740 for (i = 0; i < fields->len; i++) {
741 g_ptr_array_add(fields_array,
742 &g_array_index(fields,
743 struct declaration_field, i));
744 }
745 ret_list = fields_array->pdata;
746 *count = fields->len;
747
748end:
749 *list = (struct bt_ctf_field_decl const* const*) ret_list;
750
751 return ret;
752}
753
754const char *bt_ctf_get_decl_field_name(const struct bt_ctf_field_decl *field)
755{
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756 if (!field)
757 return NULL;
758
759 return rem_(g_quark_to_string(((struct declaration_field *) field)->name));
64c2c249 760}
2bdfa4cf 761
b14d90be 762const struct declaration *bt_ctf_get_decl_from_def(const struct definition *def)
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763{
764 if (def)
765 return def->declaration;
766
767 return NULL;
768}
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769
770const struct declaration *bt_ctf_get_decl_from_field_decl(
771 const struct bt_ctf_field_decl *field)
772{
773 if (field)
774 return ((struct declaration_field *) field)->declaration;
775
776 return NULL;
777}
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