| 1 | /* |
| 2 | * ctf/events.c |
| 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> |
| 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> |
| 30 | #include <glib.h> |
| 31 | |
| 32 | #include "events-private.h" |
| 33 | |
| 34 | /* |
| 35 | * thread local storage to store the last error that occured |
| 36 | * while reading a field, this variable must be accessed by |
| 37 | * bt_ctf_field_get_error only |
| 38 | */ |
| 39 | __thread int bt_ctf_last_field_error = 0; |
| 40 | |
| 41 | const struct definition *bt_ctf_get_top_level_scope(const struct bt_ctf_event *ctf_event, |
| 42 | enum bt_ctf_scope scope) |
| 43 | { |
| 44 | const struct definition *tmp = NULL; |
| 45 | const struct ctf_event_definition *event; |
| 46 | |
| 47 | if (!ctf_event) |
| 48 | return NULL; |
| 49 | |
| 50 | event = ctf_event->parent; |
| 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: |
| 77 | if (event->event_context) |
| 78 | tmp = &event->event_context->p; |
| 79 | break; |
| 80 | case BT_EVENT_FIELDS: |
| 81 | if (event->event_fields) |
| 82 | tmp = &event->event_fields->p; |
| 83 | break; |
| 84 | } |
| 85 | return tmp; |
| 86 | |
| 87 | error: |
| 88 | return NULL; |
| 89 | } |
| 90 | |
| 91 | const struct definition *bt_ctf_get_field(const struct bt_ctf_event *ctf_event, |
| 92 | const struct definition *scope, |
| 93 | const char *field) |
| 94 | { |
| 95 | const struct definition *def; |
| 96 | char *field_underscore; |
| 97 | |
| 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); |
| 112 | } |
| 113 | if (bt_ctf_field_type(bt_ctf_get_decl_from_def(def)) == CTF_TYPE_VARIANT) { |
| 114 | const struct definition_variant *variant_definition; |
| 115 | variant_definition = container_of(def, |
| 116 | const struct definition_variant, p); |
| 117 | return variant_definition->current_field; |
| 118 | } |
| 119 | return def; |
| 120 | } |
| 121 | |
| 122 | const struct definition *bt_ctf_get_index(const struct bt_ctf_event *ctf_event, |
| 123 | const struct definition *field, |
| 124 | unsigned int index) |
| 125 | { |
| 126 | struct definition *ret = NULL; |
| 127 | |
| 128 | if (!ctf_event || !field) |
| 129 | return NULL; |
| 130 | |
| 131 | if (bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_ARRAY) { |
| 132 | struct definition_array *array_definition; |
| 133 | array_definition = container_of(field, |
| 134 | struct definition_array, p); |
| 135 | ret = array_index(array_definition, index); |
| 136 | } else if (bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_SEQUENCE) { |
| 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 | |
| 145 | const char *bt_ctf_event_name(const struct bt_ctf_event *ctf_event) |
| 146 | { |
| 147 | const struct ctf_event_declaration *event_class; |
| 148 | const struct ctf_stream_declaration *stream_class; |
| 149 | const struct ctf_event_definition *event; |
| 150 | |
| 151 | if (!ctf_event) |
| 152 | return NULL; |
| 153 | |
| 154 | event = ctf_event->parent; |
| 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 | |
| 161 | const char *bt_ctf_field_name(const struct definition *def) |
| 162 | { |
| 163 | if (!def) |
| 164 | return NULL; |
| 165 | |
| 166 | return rem_(g_quark_to_string(def->name)); |
| 167 | } |
| 168 | |
| 169 | enum ctf_type_id bt_ctf_field_type(const struct declaration *decl) |
| 170 | { |
| 171 | if (!decl) |
| 172 | return CTF_TYPE_UNKNOWN; |
| 173 | |
| 174 | return decl->id; |
| 175 | } |
| 176 | |
| 177 | int bt_ctf_get_field_list(const struct bt_ctf_event *ctf_event, |
| 178 | const struct definition *scope, |
| 179 | struct definition const * const **list, |
| 180 | unsigned int *count) |
| 181 | { |
| 182 | if (!ctf_event || !scope || !list || !count) |
| 183 | return -EINVAL; |
| 184 | |
| 185 | switch (bt_ctf_field_type(bt_ctf_get_decl_from_def(scope))) { |
| 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 | { |
| 193 | const struct definition_struct *def_struct; |
| 194 | |
| 195 | def_struct = container_of(scope, const struct definition_struct, p); |
| 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 | } |
| 205 | break; |
| 206 | } |
| 207 | case CTF_TYPE_UNTAGGED_VARIANT: |
| 208 | goto error; |
| 209 | case CTF_TYPE_VARIANT: |
| 210 | { |
| 211 | const struct definition_variant *def_variant; |
| 212 | |
| 213 | def_variant = container_of(scope, const struct definition_variant, p); |
| 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 | } |
| 223 | break; |
| 224 | } |
| 225 | case CTF_TYPE_ARRAY: |
| 226 | { |
| 227 | const struct definition_array *def_array; |
| 228 | |
| 229 | def_array = container_of(scope, const struct definition_array, p); |
| 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 | } |
| 239 | break; |
| 240 | } |
| 241 | case CTF_TYPE_SEQUENCE: |
| 242 | { |
| 243 | const struct definition_sequence *def_sequence; |
| 244 | |
| 245 | def_sequence = container_of(scope, const struct definition_sequence, p); |
| 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 | } |
| 255 | break; |
| 256 | } |
| 257 | default: |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | end: |
| 262 | return 0; |
| 263 | |
| 264 | error: |
| 265 | *list = NULL; |
| 266 | *count = 0; |
| 267 | return -1; |
| 268 | } |
| 269 | |
| 270 | struct bt_context *bt_ctf_event_get_context(const struct bt_ctf_event *ctf_event) |
| 271 | { |
| 272 | struct bt_context *ret = NULL; |
| 273 | const struct ctf_file_stream *cfs; |
| 274 | const struct ctf_trace *trace; |
| 275 | const struct ctf_event_definition *event; |
| 276 | |
| 277 | if (!ctf_event) |
| 278 | return NULL; |
| 279 | |
| 280 | event = ctf_event->parent; |
| 281 | cfs = container_of(event->stream, const struct ctf_file_stream, |
| 282 | parent); |
| 283 | trace = cfs->parent.stream_class->trace; |
| 284 | if (trace->ctx) |
| 285 | ret = trace->ctx; |
| 286 | |
| 287 | return ret; |
| 288 | } |
| 289 | |
| 290 | int bt_ctf_event_get_handle_id(const struct bt_ctf_event *ctf_event) |
| 291 | { |
| 292 | int ret = -1; |
| 293 | const struct ctf_file_stream *cfs; |
| 294 | const struct ctf_trace *trace; |
| 295 | const struct ctf_event_definition *event; |
| 296 | |
| 297 | if (!ctf_event) |
| 298 | return -EINVAL; |
| 299 | |
| 300 | event = ctf_event->parent; |
| 301 | cfs = container_of(event->stream, const struct ctf_file_stream, |
| 302 | parent); |
| 303 | trace = cfs->parent.stream_class->trace; |
| 304 | if (trace->handle) |
| 305 | ret = trace->handle->id; |
| 306 | |
| 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | uint64_t bt_ctf_get_timestamp(const struct bt_ctf_event *ctf_event) |
| 311 | { |
| 312 | const struct ctf_event_definition *event; |
| 313 | |
| 314 | if (!ctf_event) |
| 315 | return -1ULL; |
| 316 | |
| 317 | event = ctf_event->parent; |
| 318 | if (event && event->stream->has_timestamp) |
| 319 | return event->stream->real_timestamp; |
| 320 | else |
| 321 | return -1ULL; |
| 322 | } |
| 323 | |
| 324 | uint64_t bt_ctf_get_cycles(const struct bt_ctf_event *ctf_event) |
| 325 | { |
| 326 | const struct ctf_event_definition *event; |
| 327 | |
| 328 | if (!ctf_event) |
| 329 | return -1ULL; |
| 330 | |
| 331 | event = ctf_event->parent; |
| 332 | if (event && event->stream->has_timestamp) |
| 333 | return event->stream->cycles_timestamp; |
| 334 | else |
| 335 | return -1ULL; |
| 336 | } |
| 337 | |
| 338 | static void bt_ctf_field_set_error(int error) |
| 339 | { |
| 340 | bt_ctf_last_field_error = error; |
| 341 | } |
| 342 | |
| 343 | int 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 | |
| 352 | static const struct declaration_integer * |
| 353 | get_declaration_integer(const struct declaration *decl) |
| 354 | { |
| 355 | if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_INTEGER) |
| 356 | return NULL; |
| 357 | return container_of(decl, const struct declaration_integer, p); |
| 358 | } |
| 359 | |
| 360 | static const struct declaration_string * |
| 361 | get_declaration_string(const struct declaration *decl) |
| 362 | { |
| 363 | if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_STRING) |
| 364 | return NULL; |
| 365 | return container_of(decl, const struct declaration_string, p); |
| 366 | } |
| 367 | |
| 368 | static const struct declaration_array * |
| 369 | get_declaration_array(const struct declaration *decl) |
| 370 | { |
| 371 | if (!decl || bt_ctf_field_type(decl) != CTF_TYPE_ARRAY) |
| 372 | return NULL; |
| 373 | return container_of(decl, const struct declaration_array, p); |
| 374 | } |
| 375 | |
| 376 | static const struct declaration_sequence * |
| 377 | get_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 | |
| 384 | int bt_ctf_get_int_signedness(const struct declaration *decl) |
| 385 | { |
| 386 | const struct declaration_integer *integer; |
| 387 | |
| 388 | integer = get_declaration_integer(decl); |
| 389 | if (!integer) { |
| 390 | bt_ctf_field_set_error(-EINVAL); |
| 391 | return -EINVAL; |
| 392 | } |
| 393 | return integer->signedness; |
| 394 | } |
| 395 | |
| 396 | int bt_ctf_get_int_base(const struct declaration *decl) |
| 397 | { |
| 398 | const struct declaration_integer *integer; |
| 399 | |
| 400 | integer = get_declaration_integer(decl); |
| 401 | if (!integer) { |
| 402 | bt_ctf_field_set_error(-EINVAL); |
| 403 | return -EINVAL; |
| 404 | } |
| 405 | return integer->base; |
| 406 | } |
| 407 | |
| 408 | int bt_ctf_get_int_byte_order(const struct declaration *decl) |
| 409 | { |
| 410 | const struct declaration_integer *integer; |
| 411 | |
| 412 | integer = get_declaration_integer(decl); |
| 413 | if (!integer) { |
| 414 | bt_ctf_field_set_error(-EINVAL); |
| 415 | return -EINVAL; |
| 416 | } |
| 417 | return integer->byte_order; |
| 418 | } |
| 419 | |
| 420 | ssize_t bt_ctf_get_int_len(const struct declaration *decl) |
| 421 | { |
| 422 | const struct declaration_integer *integer; |
| 423 | |
| 424 | integer = get_declaration_integer(decl); |
| 425 | if (!integer) { |
| 426 | bt_ctf_field_set_error(-EINVAL); |
| 427 | return -EINVAL; |
| 428 | } |
| 429 | return (ssize_t) integer->len; |
| 430 | } |
| 431 | |
| 432 | const struct definition *bt_ctf_get_enum_int(const struct definition *field) |
| 433 | { |
| 434 | const struct definition_enum *def_enum; |
| 435 | |
| 436 | if (!field || bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) != CTF_TYPE_ENUM) { |
| 437 | bt_ctf_field_set_error(-EINVAL); |
| 438 | return NULL; |
| 439 | } |
| 440 | def_enum = container_of(field, const struct definition_enum, p); |
| 441 | return &def_enum->integer->p; |
| 442 | } |
| 443 | |
| 444 | const char *bt_ctf_get_enum_str(const struct definition *field) |
| 445 | { |
| 446 | const struct definition_enum *def_enum; |
| 447 | const struct declaration_enum *decl_enum; |
| 448 | GArray *array; |
| 449 | const char *ret; |
| 450 | |
| 451 | if (!field || bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) != CTF_TYPE_ENUM) { |
| 452 | bt_ctf_field_set_error(-EINVAL); |
| 453 | return NULL; |
| 454 | } |
| 455 | def_enum = container_of(field, const struct definition_enum, p); |
| 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 | |
| 480 | enum ctf_string_encoding bt_ctf_get_encoding(const struct declaration *decl) |
| 481 | { |
| 482 | enum ctf_string_encoding ret = 0; |
| 483 | enum ctf_type_id type; |
| 484 | const struct declaration_integer *integer; |
| 485 | const struct declaration_string *string; |
| 486 | const struct declaration_array *array; |
| 487 | const struct declaration_sequence *sequence; |
| 488 | |
| 489 | if (!decl) |
| 490 | goto error; |
| 491 | |
| 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) |
| 498 | goto error; |
| 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: |
| 514 | string = get_declaration_string(decl); |
| 515 | if (!string) |
| 516 | goto error; |
| 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: |
| 526 | goto error; |
| 527 | } |
| 528 | return ret; |
| 529 | |
| 530 | error: |
| 531 | bt_ctf_field_set_error(-EINVAL); |
| 532 | return -1; |
| 533 | } |
| 534 | |
| 535 | int bt_ctf_get_array_len(const struct declaration *decl) |
| 536 | { |
| 537 | const struct declaration_array *array; |
| 538 | |
| 539 | array = get_declaration_array(decl); |
| 540 | if (!array) |
| 541 | goto error; |
| 542 | return array->len; |
| 543 | |
| 544 | error: |
| 545 | bt_ctf_field_set_error(-EINVAL); |
| 546 | return -1; |
| 547 | } |
| 548 | |
| 549 | uint64_t bt_ctf_get_uint64(const struct definition *field) |
| 550 | { |
| 551 | uint64_t ret = 0; |
| 552 | |
| 553 | if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_INTEGER) |
| 554 | ret = get_unsigned_int(field); |
| 555 | else |
| 556 | bt_ctf_field_set_error(-EINVAL); |
| 557 | |
| 558 | return ret; |
| 559 | } |
| 560 | |
| 561 | int64_t bt_ctf_get_int64(const struct definition *field) |
| 562 | { |
| 563 | int64_t ret = 0; |
| 564 | |
| 565 | if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_INTEGER) |
| 566 | ret = get_signed_int(field); |
| 567 | else |
| 568 | bt_ctf_field_set_error(-EINVAL); |
| 569 | |
| 570 | return ret; |
| 571 | } |
| 572 | |
| 573 | char *bt_ctf_get_char_array(const struct definition *field) |
| 574 | { |
| 575 | char *ret = NULL; |
| 576 | GString *char_array; |
| 577 | |
| 578 | if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_ARRAY) { |
| 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); |
| 586 | |
| 587 | end: |
| 588 | return ret; |
| 589 | } |
| 590 | |
| 591 | char *bt_ctf_get_string(const struct definition *field) |
| 592 | { |
| 593 | char *ret = NULL; |
| 594 | |
| 595 | if (field && bt_ctf_field_type(bt_ctf_get_decl_from_def(field)) == CTF_TYPE_STRING) |
| 596 | ret = get_string(field); |
| 597 | else |
| 598 | bt_ctf_field_set_error(-EINVAL); |
| 599 | |
| 600 | return ret; |
| 601 | } |
| 602 | |
| 603 | int bt_ctf_get_event_decl_list(int handle_id, struct bt_context *ctx, |
| 604 | struct bt_ctf_event_decl * const **list, |
| 605 | unsigned int *count) |
| 606 | { |
| 607 | struct bt_trace_handle *handle; |
| 608 | struct trace_descriptor *td; |
| 609 | struct ctf_trace *tin; |
| 610 | |
| 611 | if (!ctx || !list || !count) |
| 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 | |
| 622 | *list = (struct bt_ctf_event_decl * const*) tin->event_declarations->pdata; |
| 623 | *count = tin->event_declarations->len; |
| 624 | return 0; |
| 625 | |
| 626 | error: |
| 627 | return -1; |
| 628 | } |
| 629 | |
| 630 | const char *bt_ctf_get_decl_event_name(const struct bt_ctf_event_decl *event) |
| 631 | { |
| 632 | if (!event) |
| 633 | return NULL; |
| 634 | |
| 635 | return g_quark_to_string(event->parent.name); |
| 636 | } |
| 637 | |
| 638 | int 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 | |
| 650 | if (!event_decl || !list || !count) |
| 651 | return -EINVAL; |
| 652 | |
| 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 | |
| 748 | end: |
| 749 | *list = (struct bt_ctf_field_decl const* const*) ret_list; |
| 750 | |
| 751 | return ret; |
| 752 | } |
| 753 | |
| 754 | const char *bt_ctf_get_decl_field_name(const struct bt_ctf_field_decl *field) |
| 755 | { |
| 756 | if (!field) |
| 757 | return NULL; |
| 758 | |
| 759 | return rem_(g_quark_to_string(((struct declaration_field *) field)->name)); |
| 760 | } |
| 761 | |
| 762 | const struct declaration *bt_ctf_get_decl_from_def(const struct definition *def) |
| 763 | { |
| 764 | if (def) |
| 765 | return def->declaration; |
| 766 | |
| 767 | return NULL; |
| 768 | } |
| 769 | |
| 770 | const 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 | } |