| 1 | /* |
| 2 | * event.c |
| 3 | * |
| 4 | * Babeltrace CTF IR - Event |
| 5 | * |
| 6 | * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 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/event.h> |
| 30 | #include <babeltrace/ctf-writer/event-types.h> |
| 31 | #include <babeltrace/ctf-writer/event-fields.h> |
| 32 | #include <babeltrace/ctf-ir/event-fields-internal.h> |
| 33 | #include <babeltrace/ctf-ir/event-types-internal.h> |
| 34 | #include <babeltrace/ctf-ir/event-internal.h> |
| 35 | #include <babeltrace/ctf-ir/stream-class.h> |
| 36 | #include <babeltrace/ctf-ir/stream-class-internal.h> |
| 37 | #include <babeltrace/ctf-ir/trace-internal.h> |
| 38 | #include <babeltrace/ctf-ir/utils.h> |
| 39 | #include <babeltrace/ctf-ir/attributes-internal.h> |
| 40 | #include <babeltrace/compiler.h> |
| 41 | |
| 42 | static |
| 43 | void bt_ctf_event_class_destroy(struct bt_ctf_ref *ref); |
| 44 | static |
| 45 | void bt_ctf_event_destroy(struct bt_ctf_ref *ref); |
| 46 | static |
| 47 | int set_integer_field_value(struct bt_ctf_field *field, uint64_t value); |
| 48 | |
| 49 | struct bt_ctf_event_class *bt_ctf_event_class_create(const char *name) |
| 50 | { |
| 51 | int ret; |
| 52 | struct bt_object *obj = NULL; |
| 53 | struct bt_ctf_event_class *event_class = NULL; |
| 54 | |
| 55 | if (bt_ctf_validate_identifier(name)) { |
| 56 | goto error; |
| 57 | } |
| 58 | |
| 59 | event_class = g_new0(struct bt_ctf_event_class, 1); |
| 60 | if (!event_class) { |
| 61 | goto error; |
| 62 | } |
| 63 | |
| 64 | bt_ctf_ref_init(&event_class->ref_count); |
| 65 | event_class->fields = bt_ctf_field_type_structure_create(); |
| 66 | if (!event_class->fields) { |
| 67 | goto error; |
| 68 | } |
| 69 | |
| 70 | event_class->attributes = bt_ctf_attributes_create(); |
| 71 | if (!event_class->attributes) { |
| 72 | goto error; |
| 73 | } |
| 74 | |
| 75 | obj = bt_object_integer_create_init(-1); |
| 76 | if (!obj) { |
| 77 | goto error; |
| 78 | } |
| 79 | |
| 80 | ret = bt_ctf_attributes_set_field_value(event_class->attributes, |
| 81 | "id", obj); |
| 82 | if (ret) { |
| 83 | goto error; |
| 84 | } |
| 85 | |
| 86 | BT_OBJECT_PUT(obj); |
| 87 | |
| 88 | obj = bt_object_string_create_init(name); |
| 89 | if (!obj) { |
| 90 | goto error; |
| 91 | } |
| 92 | |
| 93 | ret = bt_ctf_attributes_set_field_value(event_class->attributes, |
| 94 | "name", obj); |
| 95 | if (ret) { |
| 96 | goto error; |
| 97 | } |
| 98 | |
| 99 | BT_OBJECT_PUT(obj); |
| 100 | |
| 101 | return event_class; |
| 102 | |
| 103 | error: |
| 104 | if (event_class) { |
| 105 | bt_ctf_event_class_put(event_class); |
| 106 | } |
| 107 | |
| 108 | BT_OBJECT_PUT(obj); |
| 109 | |
| 110 | return NULL; |
| 111 | } |
| 112 | |
| 113 | const char *bt_ctf_event_class_get_name(struct bt_ctf_event_class *event_class) |
| 114 | { |
| 115 | struct bt_object *obj = NULL; |
| 116 | const char *name = NULL; |
| 117 | |
| 118 | if (!event_class) { |
| 119 | goto end; |
| 120 | } |
| 121 | |
| 122 | obj = bt_ctf_attributes_get_field_value(event_class->attributes, |
| 123 | BT_CTF_EVENT_CLASS_ATTR_NAME_INDEX); |
| 124 | if (!obj) { |
| 125 | goto end; |
| 126 | } |
| 127 | |
| 128 | if (bt_object_string_get(obj, &name)) { |
| 129 | name = NULL; |
| 130 | } |
| 131 | |
| 132 | end: |
| 133 | BT_OBJECT_PUT(obj); |
| 134 | |
| 135 | return name; |
| 136 | } |
| 137 | |
| 138 | int64_t bt_ctf_event_class_get_id(struct bt_ctf_event_class *event_class) |
| 139 | { |
| 140 | struct bt_object *obj = NULL; |
| 141 | int64_t ret = 0; |
| 142 | |
| 143 | if (!event_class) { |
| 144 | ret = -1; |
| 145 | goto end; |
| 146 | } |
| 147 | |
| 148 | obj = bt_ctf_attributes_get_field_value(event_class->attributes, |
| 149 | BT_CTF_EVENT_CLASS_ATTR_ID_INDEX); |
| 150 | if (!obj) { |
| 151 | goto end; |
| 152 | } |
| 153 | |
| 154 | if (bt_object_integer_get(obj, &ret)) { |
| 155 | ret = -1; |
| 156 | } |
| 157 | |
| 158 | if (ret < 0) { |
| 159 | /* means ID is not set */ |
| 160 | ret = -1; |
| 161 | goto end; |
| 162 | } |
| 163 | |
| 164 | end: |
| 165 | BT_OBJECT_PUT(obj); |
| 166 | |
| 167 | return ret; |
| 168 | } |
| 169 | |
| 170 | int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class, |
| 171 | uint32_t id) |
| 172 | { |
| 173 | int ret = 0; |
| 174 | struct bt_object *obj = NULL; |
| 175 | |
| 176 | if (!event_class) { |
| 177 | ret = -1; |
| 178 | goto end; |
| 179 | } |
| 180 | |
| 181 | if (event_class->stream_class) { |
| 182 | /* |
| 183 | * We don't allow changing the id if the event class has already |
| 184 | * been added to a stream class. |
| 185 | */ |
| 186 | ret = -1; |
| 187 | goto end; |
| 188 | } |
| 189 | |
| 190 | obj = bt_ctf_attributes_get_field_value(event_class->attributes, |
| 191 | BT_CTF_EVENT_CLASS_ATTR_ID_INDEX); |
| 192 | if (!obj) { |
| 193 | goto end; |
| 194 | } |
| 195 | |
| 196 | if (bt_object_integer_set(obj, id)) { |
| 197 | ret = -1; |
| 198 | goto end; |
| 199 | } |
| 200 | |
| 201 | end: |
| 202 | BT_OBJECT_PUT(obj); |
| 203 | |
| 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | int bt_ctf_event_class_set_attribute( |
| 208 | struct bt_ctf_event_class *event_class, const char *name, |
| 209 | struct bt_object *value) |
| 210 | { |
| 211 | int ret = 0; |
| 212 | |
| 213 | if (!event_class || !name || !value || event_class->frozen) { |
| 214 | ret = -1; |
| 215 | goto end; |
| 216 | } |
| 217 | |
| 218 | if (!strcmp(name, "id") || !strcmp(name, "loglevel")) { |
| 219 | if (!bt_object_is_integer(value)) { |
| 220 | ret = -1; |
| 221 | goto end; |
| 222 | } |
| 223 | } else if (!strcmp(name, "name") || !strcmp(name, "model.emf.uri")) { |
| 224 | if (!bt_object_is_string(value)) { |
| 225 | ret = -1; |
| 226 | goto end; |
| 227 | } |
| 228 | } else { |
| 229 | /* unknown attribute */ |
| 230 | ret = -1; |
| 231 | goto end; |
| 232 | } |
| 233 | |
| 234 | /* "id" special case: >= 0 */ |
| 235 | if (!strcmp(name, "id")) { |
| 236 | int64_t val; |
| 237 | |
| 238 | ret = bt_object_integer_get(value, &val); |
| 239 | |
| 240 | if (ret) { |
| 241 | goto end; |
| 242 | } |
| 243 | |
| 244 | if (val < 0) { |
| 245 | ret = -1; |
| 246 | goto end; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | ret = bt_ctf_attributes_set_field_value(event_class->attributes, |
| 251 | name, value); |
| 252 | |
| 253 | end: |
| 254 | return ret; |
| 255 | } |
| 256 | |
| 257 | int bt_ctf_event_class_get_attribute_count( |
| 258 | struct bt_ctf_event_class *event_class) |
| 259 | { |
| 260 | int ret = 0; |
| 261 | |
| 262 | if (!event_class) { |
| 263 | ret = -1; |
| 264 | goto end; |
| 265 | } |
| 266 | |
| 267 | ret = bt_ctf_attributes_get_count(event_class->attributes); |
| 268 | |
| 269 | end: |
| 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | const char * |
| 274 | bt_ctf_event_class_get_attribute_name( |
| 275 | struct bt_ctf_event_class *event_class, int index) |
| 276 | { |
| 277 | const char *ret; |
| 278 | |
| 279 | if (!event_class) { |
| 280 | ret = NULL; |
| 281 | goto end; |
| 282 | } |
| 283 | |
| 284 | ret = bt_ctf_attributes_get_field_name(event_class->attributes, index); |
| 285 | |
| 286 | end: |
| 287 | return ret; |
| 288 | } |
| 289 | |
| 290 | struct bt_object * |
| 291 | bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class, |
| 292 | int index) |
| 293 | { |
| 294 | struct bt_object *ret; |
| 295 | |
| 296 | if (!event_class) { |
| 297 | ret = NULL; |
| 298 | goto end; |
| 299 | } |
| 300 | |
| 301 | ret = bt_ctf_attributes_get_field_value(event_class->attributes, index); |
| 302 | |
| 303 | end: |
| 304 | return ret; |
| 305 | } |
| 306 | |
| 307 | struct bt_object * |
| 308 | bt_ctf_event_class_get_attribute_value_by_name( |
| 309 | struct bt_ctf_event_class *event_class, const char *name) |
| 310 | { |
| 311 | struct bt_object *ret; |
| 312 | |
| 313 | if (!event_class || !name) { |
| 314 | ret = NULL; |
| 315 | goto end; |
| 316 | } |
| 317 | |
| 318 | ret = bt_ctf_attributes_get_field_value_by_name(event_class->attributes, |
| 319 | name); |
| 320 | |
| 321 | end: |
| 322 | return ret; |
| 323 | |
| 324 | } |
| 325 | |
| 326 | struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class( |
| 327 | struct bt_ctf_event_class *event_class) |
| 328 | { |
| 329 | struct bt_ctf_stream_class *stream_class = NULL; |
| 330 | |
| 331 | if (!event_class) { |
| 332 | goto end; |
| 333 | } |
| 334 | |
| 335 | stream_class = event_class->stream_class; |
| 336 | bt_ctf_stream_class_get(stream_class); |
| 337 | end: |
| 338 | return stream_class; |
| 339 | } |
| 340 | |
| 341 | struct bt_ctf_field_type *bt_ctf_event_class_get_payload_type( |
| 342 | struct bt_ctf_event_class *event_class) |
| 343 | { |
| 344 | struct bt_ctf_field_type *payload = NULL; |
| 345 | |
| 346 | if (!event_class) { |
| 347 | goto end; |
| 348 | } |
| 349 | |
| 350 | bt_ctf_field_type_get(event_class->fields); |
| 351 | payload = event_class->fields; |
| 352 | end: |
| 353 | return payload; |
| 354 | } |
| 355 | |
| 356 | int bt_ctf_event_class_set_payload_type(struct bt_ctf_event_class *event_class, |
| 357 | struct bt_ctf_field_type *payload) |
| 358 | { |
| 359 | int ret = 0; |
| 360 | |
| 361 | if (!event_class || !payload || |
| 362 | bt_ctf_field_type_get_type_id(payload) != CTF_TYPE_STRUCT) { |
| 363 | ret = -1; |
| 364 | goto end; |
| 365 | } |
| 366 | |
| 367 | bt_ctf_field_type_get(payload); |
| 368 | bt_ctf_field_type_put(event_class->fields); |
| 369 | event_class->fields = payload; |
| 370 | end: |
| 371 | return ret; |
| 372 | } |
| 373 | |
| 374 | int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class, |
| 375 | struct bt_ctf_field_type *type, |
| 376 | const char *name) |
| 377 | { |
| 378 | int ret = 0; |
| 379 | |
| 380 | if (!event_class || !type || bt_ctf_validate_identifier(name) || |
| 381 | event_class->frozen) { |
| 382 | ret = -1; |
| 383 | goto end; |
| 384 | } |
| 385 | |
| 386 | if (bt_ctf_field_type_get_type_id(event_class->fields) != |
| 387 | CTF_TYPE_STRUCT) { |
| 388 | ret = -1; |
| 389 | goto end; |
| 390 | } |
| 391 | |
| 392 | ret = bt_ctf_field_type_structure_add_field(event_class->fields, |
| 393 | type, name); |
| 394 | end: |
| 395 | return ret; |
| 396 | } |
| 397 | |
| 398 | int bt_ctf_event_class_get_field_count( |
| 399 | struct bt_ctf_event_class *event_class) |
| 400 | { |
| 401 | int ret; |
| 402 | |
| 403 | if (!event_class) { |
| 404 | ret = -1; |
| 405 | goto end; |
| 406 | } |
| 407 | |
| 408 | if (bt_ctf_field_type_get_type_id(event_class->fields) != |
| 409 | CTF_TYPE_STRUCT) { |
| 410 | ret = -1; |
| 411 | goto end; |
| 412 | } |
| 413 | |
| 414 | ret = bt_ctf_field_type_structure_get_field_count(event_class->fields); |
| 415 | end: |
| 416 | return ret; |
| 417 | } |
| 418 | |
| 419 | int bt_ctf_event_class_get_field(struct bt_ctf_event_class *event_class, |
| 420 | const char **field_name, struct bt_ctf_field_type **field_type, |
| 421 | int index) |
| 422 | { |
| 423 | int ret; |
| 424 | |
| 425 | if (!event_class || index < 0) { |
| 426 | ret = -1; |
| 427 | goto end; |
| 428 | } |
| 429 | |
| 430 | if (bt_ctf_field_type_get_type_id(event_class->fields) != |
| 431 | CTF_TYPE_STRUCT) { |
| 432 | ret = -1; |
| 433 | goto end; |
| 434 | } |
| 435 | |
| 436 | ret = bt_ctf_field_type_structure_get_field(event_class->fields, |
| 437 | field_name, field_type, index); |
| 438 | end: |
| 439 | return ret; |
| 440 | } |
| 441 | |
| 442 | struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name( |
| 443 | struct bt_ctf_event_class *event_class, const char *name) |
| 444 | { |
| 445 | GQuark name_quark; |
| 446 | struct bt_ctf_field_type *field_type = NULL; |
| 447 | |
| 448 | if (!event_class || !name) { |
| 449 | goto end; |
| 450 | } |
| 451 | |
| 452 | if (bt_ctf_field_type_get_type_id(event_class->fields) != |
| 453 | CTF_TYPE_STRUCT) { |
| 454 | goto end; |
| 455 | } |
| 456 | |
| 457 | name_quark = g_quark_try_string(name); |
| 458 | if (!name_quark) { |
| 459 | goto end; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * No need to increment field_type's reference count since getting it |
| 464 | * from the structure already does. |
| 465 | */ |
| 466 | field_type = bt_ctf_field_type_structure_get_field_type_by_name( |
| 467 | event_class->fields, name); |
| 468 | end: |
| 469 | return field_type; |
| 470 | } |
| 471 | |
| 472 | struct bt_ctf_field_type *bt_ctf_event_class_get_context_type( |
| 473 | struct bt_ctf_event_class *event_class) |
| 474 | { |
| 475 | struct bt_ctf_field_type *context_type = NULL; |
| 476 | |
| 477 | if (!event_class || !event_class->context) { |
| 478 | goto end; |
| 479 | } |
| 480 | |
| 481 | bt_ctf_field_type_get(event_class->context); |
| 482 | context_type = event_class->context; |
| 483 | end: |
| 484 | return context_type; |
| 485 | } |
| 486 | |
| 487 | int bt_ctf_event_class_set_context_type( |
| 488 | struct bt_ctf_event_class *event_class, |
| 489 | struct bt_ctf_field_type *context) |
| 490 | { |
| 491 | int ret = 0; |
| 492 | |
| 493 | if (!event_class || !context || event_class->frozen) { |
| 494 | ret = -1; |
| 495 | goto end; |
| 496 | } |
| 497 | |
| 498 | if (bt_ctf_field_type_get_type_id(context) != CTF_TYPE_STRUCT) { |
| 499 | ret = -1; |
| 500 | goto end; |
| 501 | } |
| 502 | |
| 503 | bt_ctf_field_type_get(context); |
| 504 | bt_ctf_field_type_put(event_class->context); |
| 505 | event_class->context = context; |
| 506 | end: |
| 507 | return ret; |
| 508 | |
| 509 | } |
| 510 | |
| 511 | void bt_ctf_event_class_get(struct bt_ctf_event_class *event_class) |
| 512 | { |
| 513 | if (!event_class) { |
| 514 | return; |
| 515 | } |
| 516 | |
| 517 | bt_ctf_ref_get(&event_class->ref_count); |
| 518 | } |
| 519 | |
| 520 | void bt_ctf_event_class_put(struct bt_ctf_event_class *event_class) |
| 521 | { |
| 522 | if (!event_class) { |
| 523 | return; |
| 524 | } |
| 525 | |
| 526 | bt_ctf_ref_put(&event_class->ref_count, bt_ctf_event_class_destroy); |
| 527 | } |
| 528 | |
| 529 | struct bt_ctf_event *bt_ctf_event_create(struct bt_ctf_event_class *event_class) |
| 530 | { |
| 531 | int ret; |
| 532 | struct bt_object *obj = NULL; |
| 533 | struct bt_ctf_event *event = NULL; |
| 534 | |
| 535 | if (!event_class) { |
| 536 | goto end; |
| 537 | } |
| 538 | |
| 539 | /* |
| 540 | * The event class does not keep ownership of the stream class to |
| 541 | * which it as been added. Therefore, it can't assume it has been |
| 542 | * set. However, we disallow the creation of an event if its |
| 543 | * associated stream class has been reclaimed. |
| 544 | */ |
| 545 | if (!event_class->stream_class) { |
| 546 | goto end; |
| 547 | } |
| 548 | assert(event_class->stream_class->event_header_type); |
| 549 | |
| 550 | /* set "stream_id" attribute now that we know its value */ |
| 551 | obj = bt_object_integer_create_init(event_class->stream_class->id); |
| 552 | if (!obj) { |
| 553 | goto end; |
| 554 | } |
| 555 | |
| 556 | ret = bt_ctf_attributes_set_field_value(event_class->attributes, |
| 557 | "stream_id", obj); |
| 558 | BT_OBJECT_PUT(obj); |
| 559 | |
| 560 | if (ret) { |
| 561 | goto end; |
| 562 | } |
| 563 | |
| 564 | event = g_new0(struct bt_ctf_event, 1); |
| 565 | if (!event) { |
| 566 | goto end; |
| 567 | } |
| 568 | |
| 569 | bt_ctf_ref_init(&event->ref_count); |
| 570 | bt_ctf_event_class_get(event_class); |
| 571 | bt_ctf_event_class_freeze(event_class); |
| 572 | event->event_class = event_class; |
| 573 | |
| 574 | event->event_header = bt_ctf_field_create( |
| 575 | event_class->stream_class->event_header_type); |
| 576 | if (!event->event_header) { |
| 577 | goto error_destroy; |
| 578 | } |
| 579 | if (event_class->context) { |
| 580 | event->context_payload = bt_ctf_field_create( |
| 581 | event_class->context); |
| 582 | if (!event->context_payload) { |
| 583 | goto error_destroy; |
| 584 | } |
| 585 | } |
| 586 | event->fields_payload = bt_ctf_field_create(event_class->fields); |
| 587 | if (!event->fields_payload) { |
| 588 | goto error_destroy; |
| 589 | } |
| 590 | |
| 591 | /* |
| 592 | * Freeze the stream class since the event header must not be changed |
| 593 | * anymore. |
| 594 | */ |
| 595 | bt_ctf_stream_class_freeze(event_class->stream_class); |
| 596 | end: |
| 597 | return event; |
| 598 | error_destroy: |
| 599 | if (event) { |
| 600 | bt_ctf_event_destroy(&event->ref_count); |
| 601 | } |
| 602 | |
| 603 | return NULL; |
| 604 | } |
| 605 | |
| 606 | struct bt_ctf_event_class *bt_ctf_event_get_class(struct bt_ctf_event *event) |
| 607 | { |
| 608 | struct bt_ctf_event_class *event_class = NULL; |
| 609 | |
| 610 | if (!event) { |
| 611 | goto end; |
| 612 | } |
| 613 | |
| 614 | event_class = event->event_class; |
| 615 | bt_ctf_event_class_get(event_class); |
| 616 | end: |
| 617 | return event_class; |
| 618 | } |
| 619 | |
| 620 | struct bt_ctf_stream *bt_ctf_event_get_stream(struct bt_ctf_event *event) |
| 621 | { |
| 622 | struct bt_ctf_stream *stream = NULL; |
| 623 | |
| 624 | if (!event) { |
| 625 | goto end; |
| 626 | } |
| 627 | |
| 628 | stream = event->stream; |
| 629 | if (stream) { |
| 630 | bt_ctf_stream_get(stream); |
| 631 | } |
| 632 | end: |
| 633 | return stream; |
| 634 | } |
| 635 | |
| 636 | struct bt_ctf_clock *bt_ctf_event_get_clock(struct bt_ctf_event *event) |
| 637 | { |
| 638 | struct bt_ctf_clock *clock = NULL; |
| 639 | struct bt_ctf_event_class *event_class; |
| 640 | struct bt_ctf_stream_class *stream_class; |
| 641 | |
| 642 | if (!event) { |
| 643 | goto end; |
| 644 | } |
| 645 | |
| 646 | event_class = bt_ctf_event_get_class(event); |
| 647 | if (!event_class) { |
| 648 | goto end; |
| 649 | } |
| 650 | |
| 651 | stream_class = bt_ctf_event_class_get_stream_class(event_class); |
| 652 | if (!stream_class) { |
| 653 | goto error_put_event_class; |
| 654 | } |
| 655 | |
| 656 | clock = bt_ctf_stream_class_get_clock(stream_class); |
| 657 | if (!clock) { |
| 658 | goto error_put_stream_class; |
| 659 | } |
| 660 | |
| 661 | error_put_stream_class: |
| 662 | bt_ctf_stream_class_put(stream_class); |
| 663 | error_put_event_class: |
| 664 | bt_ctf_event_class_put(event_class); |
| 665 | end: |
| 666 | return clock; |
| 667 | } |
| 668 | |
| 669 | int bt_ctf_event_set_payload(struct bt_ctf_event *event, |
| 670 | const char *name, |
| 671 | struct bt_ctf_field *payload) |
| 672 | { |
| 673 | int ret = 0; |
| 674 | |
| 675 | if (!event || !payload) { |
| 676 | ret = -1; |
| 677 | goto end; |
| 678 | } |
| 679 | |
| 680 | if (name) { |
| 681 | ret = bt_ctf_field_structure_set_field(event->fields_payload, |
| 682 | name, payload); |
| 683 | } else { |
| 684 | struct bt_ctf_field_type *payload_type; |
| 685 | |
| 686 | payload_type = bt_ctf_field_get_type(payload); |
| 687 | if (payload_type == event->event_class->fields) { |
| 688 | bt_ctf_field_put(event->fields_payload); |
| 689 | bt_ctf_field_get(payload); |
| 690 | event->fields_payload = payload; |
| 691 | } else { |
| 692 | ret = -1; |
| 693 | } |
| 694 | |
| 695 | bt_ctf_field_type_put(payload_type); |
| 696 | } |
| 697 | end: |
| 698 | return ret; |
| 699 | } |
| 700 | |
| 701 | |
| 702 | struct bt_ctf_field *bt_ctf_event_get_payload(struct bt_ctf_event *event, |
| 703 | const char *name) |
| 704 | { |
| 705 | struct bt_ctf_field *field = NULL; |
| 706 | |
| 707 | if (!event) { |
| 708 | goto end; |
| 709 | } |
| 710 | |
| 711 | if (name) { |
| 712 | field = bt_ctf_field_structure_get_field(event->fields_payload, |
| 713 | name); |
| 714 | } else { |
| 715 | field = event->fields_payload; |
| 716 | bt_ctf_field_get(field); |
| 717 | } |
| 718 | end: |
| 719 | return field; |
| 720 | } |
| 721 | |
| 722 | struct bt_ctf_field *bt_ctf_event_get_payload_by_index( |
| 723 | struct bt_ctf_event *event, int index) |
| 724 | { |
| 725 | struct bt_ctf_field *field = NULL; |
| 726 | |
| 727 | if (!event || index < 0) { |
| 728 | goto end; |
| 729 | } |
| 730 | |
| 731 | field = bt_ctf_field_structure_get_field_by_index(event->fields_payload, |
| 732 | index); |
| 733 | end: |
| 734 | return field; |
| 735 | } |
| 736 | |
| 737 | struct bt_ctf_field *bt_ctf_event_get_event_header( |
| 738 | struct bt_ctf_event *event) |
| 739 | { |
| 740 | struct bt_ctf_field *header = NULL; |
| 741 | |
| 742 | if (!event || !event->event_header) { |
| 743 | goto end; |
| 744 | } |
| 745 | |
| 746 | header = event->event_header; |
| 747 | bt_ctf_field_get(header); |
| 748 | end: |
| 749 | return header; |
| 750 | } |
| 751 | |
| 752 | int bt_ctf_event_set_event_header(struct bt_ctf_event *event, |
| 753 | struct bt_ctf_field *header) |
| 754 | { |
| 755 | int ret = 0; |
| 756 | struct bt_ctf_field_type *field_type = NULL; |
| 757 | |
| 758 | if (!event || !header) { |
| 759 | ret = -1; |
| 760 | goto end; |
| 761 | } |
| 762 | |
| 763 | /* Could be NULL since an event class doesn't own a stream class */ |
| 764 | if (!event->event_class->stream_class) { |
| 765 | ret = -1; |
| 766 | goto end; |
| 767 | } |
| 768 | |
| 769 | /* |
| 770 | * Ensure the provided header's type matches the one registered to the |
| 771 | * stream class. |
| 772 | */ |
| 773 | field_type = bt_ctf_field_get_type(header); |
| 774 | if (field_type != event->event_class->stream_class->event_header_type) { |
| 775 | ret = -1; |
| 776 | goto end; |
| 777 | } |
| 778 | |
| 779 | bt_ctf_field_get(header); |
| 780 | bt_ctf_field_put(event->event_header); |
| 781 | event->event_header = header; |
| 782 | end: |
| 783 | if (field_type) { |
| 784 | bt_ctf_field_type_put(field_type); |
| 785 | } |
| 786 | return ret; |
| 787 | } |
| 788 | |
| 789 | struct bt_ctf_field *bt_ctf_event_get_event_context( |
| 790 | struct bt_ctf_event *event) |
| 791 | { |
| 792 | struct bt_ctf_field *context = NULL; |
| 793 | |
| 794 | if (!event || !event->context_payload) { |
| 795 | goto end; |
| 796 | } |
| 797 | |
| 798 | context = event->context_payload; |
| 799 | bt_ctf_field_get(context); |
| 800 | end: |
| 801 | return context; |
| 802 | } |
| 803 | |
| 804 | int bt_ctf_event_set_event_context(struct bt_ctf_event *event, |
| 805 | struct bt_ctf_field *context) |
| 806 | { |
| 807 | int ret = 0; |
| 808 | struct bt_ctf_field_type *field_type = NULL; |
| 809 | |
| 810 | if (!event || !context) { |
| 811 | ret = -1; |
| 812 | goto end; |
| 813 | } |
| 814 | |
| 815 | field_type = bt_ctf_field_get_type(context); |
| 816 | if (field_type != event->event_class->context) { |
| 817 | ret = -1; |
| 818 | goto end; |
| 819 | } |
| 820 | |
| 821 | bt_ctf_field_get(context); |
| 822 | bt_ctf_field_put(event->context_payload); |
| 823 | event->context_payload = context; |
| 824 | end: |
| 825 | if (field_type) { |
| 826 | bt_ctf_field_type_put(field_type); |
| 827 | } |
| 828 | return ret; |
| 829 | } |
| 830 | |
| 831 | void bt_ctf_event_get(struct bt_ctf_event *event) |
| 832 | { |
| 833 | if (!event) { |
| 834 | return; |
| 835 | } |
| 836 | |
| 837 | bt_ctf_ref_get(&event->ref_count); |
| 838 | } |
| 839 | |
| 840 | void bt_ctf_event_put(struct bt_ctf_event *event) |
| 841 | { |
| 842 | if (!event) { |
| 843 | return; |
| 844 | } |
| 845 | |
| 846 | bt_ctf_ref_put(&event->ref_count, bt_ctf_event_destroy); |
| 847 | } |
| 848 | |
| 849 | static |
| 850 | void bt_ctf_event_class_destroy(struct bt_ctf_ref *ref) |
| 851 | { |
| 852 | struct bt_ctf_event_class *event_class; |
| 853 | |
| 854 | if (!ref) { |
| 855 | return; |
| 856 | } |
| 857 | |
| 858 | /* |
| 859 | * Don't call put() on the stream class. See comment in |
| 860 | * bt_ctf_event_class_set_stream_class for explanation. |
| 861 | */ |
| 862 | event_class = container_of(ref, struct bt_ctf_event_class, ref_count); |
| 863 | if (event_class->attributes) { |
| 864 | bt_ctf_attributes_destroy(event_class->attributes); |
| 865 | } |
| 866 | if (event_class->context) { |
| 867 | bt_ctf_field_type_put(event_class->context); |
| 868 | } |
| 869 | if (event_class->fields) { |
| 870 | bt_ctf_field_type_put(event_class->fields); |
| 871 | } |
| 872 | g_free(event_class); |
| 873 | } |
| 874 | |
| 875 | static |
| 876 | void bt_ctf_event_destroy(struct bt_ctf_ref *ref) |
| 877 | { |
| 878 | struct bt_ctf_event *event; |
| 879 | |
| 880 | if (!ref) { |
| 881 | return; |
| 882 | } |
| 883 | |
| 884 | event = container_of(ref, struct bt_ctf_event, |
| 885 | ref_count); |
| 886 | if (event->event_class) { |
| 887 | bt_ctf_event_class_put(event->event_class); |
| 888 | } |
| 889 | if (event->event_header) { |
| 890 | bt_ctf_field_put(event->event_header); |
| 891 | } |
| 892 | if (event->context_payload) { |
| 893 | bt_ctf_field_put(event->context_payload); |
| 894 | } |
| 895 | if (event->fields_payload) { |
| 896 | bt_ctf_field_put(event->fields_payload); |
| 897 | } |
| 898 | g_free(event); |
| 899 | } |
| 900 | |
| 901 | static |
| 902 | int set_integer_field_value(struct bt_ctf_field* field, uint64_t value) |
| 903 | { |
| 904 | int ret = 0; |
| 905 | struct bt_ctf_field_type *field_type = NULL; |
| 906 | |
| 907 | if (!field) { |
| 908 | ret = -1; |
| 909 | goto end; |
| 910 | } |
| 911 | |
| 912 | if (!bt_ctf_field_validate(field)) { |
| 913 | /* Payload already set, skip! (not an error) */ |
| 914 | goto end; |
| 915 | } |
| 916 | |
| 917 | field_type = bt_ctf_field_get_type(field); |
| 918 | assert(field_type); |
| 919 | |
| 920 | if (bt_ctf_field_type_get_type_id(field_type) != CTF_TYPE_INTEGER) { |
| 921 | /* Not an integer and the value is unset, error. */ |
| 922 | ret = -1; |
| 923 | goto end; |
| 924 | } |
| 925 | |
| 926 | if (bt_ctf_field_type_integer_get_signed(field_type)) { |
| 927 | ret = bt_ctf_field_signed_integer_set_value(field, (int64_t) value); |
| 928 | if (ret) { |
| 929 | /* Value is out of range, error. */ |
| 930 | goto end; |
| 931 | } |
| 932 | } else { |
| 933 | ret = bt_ctf_field_unsigned_integer_set_value(field, value); |
| 934 | if (ret) { |
| 935 | /* Value is out of range, error. */ |
| 936 | goto end; |
| 937 | } |
| 938 | } |
| 939 | end: |
| 940 | bt_ctf_field_type_put(field_type); |
| 941 | return ret; |
| 942 | } |
| 943 | |
| 944 | BT_HIDDEN |
| 945 | void bt_ctf_event_class_freeze(struct bt_ctf_event_class *event_class) |
| 946 | { |
| 947 | assert(event_class); |
| 948 | event_class->frozen = 1; |
| 949 | bt_ctf_field_type_freeze(event_class->context); |
| 950 | bt_ctf_field_type_freeze(event_class->fields); |
| 951 | bt_ctf_attributes_freeze(event_class->attributes); |
| 952 | } |
| 953 | |
| 954 | BT_HIDDEN |
| 955 | int bt_ctf_event_class_set_stream_class(struct bt_ctf_event_class *event_class, |
| 956 | struct bt_ctf_stream_class *stream_class) |
| 957 | { |
| 958 | int ret = 0; |
| 959 | |
| 960 | if (!event_class) { |
| 961 | ret = -1; |
| 962 | goto end; |
| 963 | } |
| 964 | |
| 965 | /* Allow a NULL stream_class to unset the current stream_class */ |
| 966 | if (stream_class && event_class->stream_class) { |
| 967 | ret = -1; |
| 968 | goto end; |
| 969 | } |
| 970 | |
| 971 | event_class->stream_class = stream_class; |
| 972 | /* |
| 973 | * We don't get() the stream_class since doing so would introduce |
| 974 | * a circular ownership between event classes and stream classes. |
| 975 | * |
| 976 | * A stream class will always unset itself from its events before |
| 977 | * being destroyed. This ensures that a user won't get a pointer |
| 978 | * to a stale stream class instance from an event class. |
| 979 | */ |
| 980 | end: |
| 981 | return ret; |
| 982 | } |
| 983 | |
| 984 | BT_HIDDEN |
| 985 | int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class, |
| 986 | struct metadata_context *context) |
| 987 | { |
| 988 | int i; |
| 989 | int count; |
| 990 | int ret = 0; |
| 991 | struct bt_object *attr_value = NULL; |
| 992 | |
| 993 | assert(event_class); |
| 994 | assert(context); |
| 995 | |
| 996 | context->current_indentation_level = 1; |
| 997 | g_string_assign(context->field_name, ""); |
| 998 | g_string_append(context->string, "event {\n"); |
| 999 | count = bt_ctf_event_class_get_attribute_count(event_class); |
| 1000 | |
| 1001 | if (count < 0) { |
| 1002 | ret = -1; |
| 1003 | goto end; |
| 1004 | } |
| 1005 | |
| 1006 | for (i = 0; i < count; ++i) { |
| 1007 | const char *attr_name = NULL; |
| 1008 | |
| 1009 | attr_name = bt_ctf_event_class_get_attribute_name( |
| 1010 | event_class, i); |
| 1011 | attr_value = bt_ctf_event_class_get_attribute_value( |
| 1012 | event_class, i); |
| 1013 | |
| 1014 | if (!attr_name || !attr_value) { |
| 1015 | ret = -1; |
| 1016 | goto end; |
| 1017 | } |
| 1018 | |
| 1019 | switch (bt_object_get_type(attr_value)) { |
| 1020 | case BT_OBJECT_TYPE_INTEGER: |
| 1021 | { |
| 1022 | int64_t value; |
| 1023 | |
| 1024 | ret = bt_object_integer_get(attr_value, &value); |
| 1025 | |
| 1026 | if (ret) { |
| 1027 | goto end; |
| 1028 | } |
| 1029 | |
| 1030 | g_string_append_printf(context->string, |
| 1031 | "\t%s = %" PRId64 ";\n", attr_name, value); |
| 1032 | break; |
| 1033 | } |
| 1034 | |
| 1035 | case BT_OBJECT_TYPE_STRING: |
| 1036 | { |
| 1037 | const char *value; |
| 1038 | |
| 1039 | ret = bt_object_string_get(attr_value, &value); |
| 1040 | |
| 1041 | if (ret) { |
| 1042 | goto end; |
| 1043 | } |
| 1044 | |
| 1045 | g_string_append_printf(context->string, |
| 1046 | "\t%s = \"%s\";\n", attr_name, value); |
| 1047 | break; |
| 1048 | } |
| 1049 | |
| 1050 | default: |
| 1051 | /* should never happen */ |
| 1052 | assert(false); |
| 1053 | break; |
| 1054 | } |
| 1055 | |
| 1056 | BT_OBJECT_PUT(attr_value); |
| 1057 | } |
| 1058 | |
| 1059 | if (event_class->context) { |
| 1060 | g_string_append(context->string, "\tcontext := "); |
| 1061 | ret = bt_ctf_field_type_serialize(event_class->context, |
| 1062 | context); |
| 1063 | if (ret) { |
| 1064 | goto end; |
| 1065 | } |
| 1066 | g_string_append(context->string, ";\n"); |
| 1067 | } |
| 1068 | |
| 1069 | if (event_class->fields) { |
| 1070 | g_string_append(context->string, "\tfields := "); |
| 1071 | ret = bt_ctf_field_type_serialize(event_class->fields, context); |
| 1072 | if (ret) { |
| 1073 | goto end; |
| 1074 | } |
| 1075 | g_string_append(context->string, ";\n"); |
| 1076 | } |
| 1077 | |
| 1078 | g_string_append(context->string, "};\n\n"); |
| 1079 | end: |
| 1080 | context->current_indentation_level = 0; |
| 1081 | BT_OBJECT_PUT(attr_value); |
| 1082 | return ret; |
| 1083 | } |
| 1084 | |
| 1085 | void bt_ctf_event_class_set_native_byte_order( |
| 1086 | struct bt_ctf_event_class *event_class, |
| 1087 | int byte_order) |
| 1088 | { |
| 1089 | if (!event_class) { |
| 1090 | return; |
| 1091 | } |
| 1092 | |
| 1093 | bt_ctf_field_type_set_native_byte_order(event_class->context, |
| 1094 | byte_order); |
| 1095 | bt_ctf_field_type_set_native_byte_order(event_class->fields, |
| 1096 | byte_order); |
| 1097 | } |
| 1098 | |
| 1099 | BT_HIDDEN |
| 1100 | int bt_ctf_event_validate(struct bt_ctf_event *event) |
| 1101 | { |
| 1102 | /* Make sure each field's payload has been set */ |
| 1103 | int ret; |
| 1104 | |
| 1105 | assert(event); |
| 1106 | ret = bt_ctf_field_validate(event->event_header); |
| 1107 | if (ret) { |
| 1108 | goto end; |
| 1109 | } |
| 1110 | |
| 1111 | ret = bt_ctf_field_validate(event->fields_payload); |
| 1112 | if (ret) { |
| 1113 | goto end; |
| 1114 | } |
| 1115 | |
| 1116 | if (event->event_class->context) { |
| 1117 | ret = bt_ctf_field_validate(event->context_payload); |
| 1118 | } |
| 1119 | end: |
| 1120 | return ret; |
| 1121 | } |
| 1122 | |
| 1123 | BT_HIDDEN |
| 1124 | int bt_ctf_event_serialize(struct bt_ctf_event *event, |
| 1125 | struct ctf_stream_pos *pos) |
| 1126 | { |
| 1127 | int ret = 0; |
| 1128 | |
| 1129 | assert(event); |
| 1130 | assert(pos); |
| 1131 | if (event->context_payload) { |
| 1132 | ret = bt_ctf_field_serialize(event->context_payload, pos); |
| 1133 | if (ret) { |
| 1134 | goto end; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | if (event->fields_payload) { |
| 1139 | ret = bt_ctf_field_serialize(event->fields_payload, pos); |
| 1140 | if (ret) { |
| 1141 | goto end; |
| 1142 | } |
| 1143 | } |
| 1144 | end: |
| 1145 | return ret; |
| 1146 | } |
| 1147 | |
| 1148 | BT_HIDDEN |
| 1149 | int bt_ctf_event_populate_event_header(struct bt_ctf_event *event) |
| 1150 | { |
| 1151 | int ret = 0; |
| 1152 | struct bt_ctf_field *id_field = NULL, *timestamp_field = NULL; |
| 1153 | |
| 1154 | if (!event) { |
| 1155 | ret = -1; |
| 1156 | goto end; |
| 1157 | } |
| 1158 | |
| 1159 | id_field = bt_ctf_field_structure_get_field(event->event_header, "id"); |
| 1160 | if (id_field) { |
| 1161 | ret = set_integer_field_value(id_field, |
| 1162 | (uint64_t) bt_ctf_event_class_get_id( |
| 1163 | event->event_class)); |
| 1164 | if (ret) { |
| 1165 | goto end; |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | timestamp_field = bt_ctf_field_structure_get_field(event->event_header, |
| 1170 | "timestamp"); |
| 1171 | if (timestamp_field) { |
| 1172 | struct bt_ctf_field_type *timestamp_field_type = |
| 1173 | bt_ctf_field_get_type(timestamp_field); |
| 1174 | struct bt_ctf_clock *mapped_clock; |
| 1175 | |
| 1176 | assert(timestamp_field_type); |
| 1177 | mapped_clock = bt_ctf_field_type_integer_get_mapped_clock( |
| 1178 | timestamp_field_type); |
| 1179 | bt_ctf_field_type_put(timestamp_field_type); |
| 1180 | if (mapped_clock) { |
| 1181 | uint64_t timestamp = bt_ctf_clock_get_time( |
| 1182 | mapped_clock); |
| 1183 | |
| 1184 | bt_ctf_clock_put(mapped_clock); |
| 1185 | if (timestamp == (uint64_t) -1ULL) { |
| 1186 | goto end; |
| 1187 | } |
| 1188 | |
| 1189 | ret = set_integer_field_value(timestamp_field, |
| 1190 | timestamp); |
| 1191 | if (ret) { |
| 1192 | goto end; |
| 1193 | } |
| 1194 | } |
| 1195 | } |
| 1196 | end: |
| 1197 | if (id_field) { |
| 1198 | bt_ctf_field_put(id_field); |
| 1199 | } |
| 1200 | if (timestamp_field) { |
| 1201 | bt_ctf_field_put(timestamp_field); |
| 1202 | } |
| 1203 | return ret; |
| 1204 | } |
| 1205 | |
| 1206 | BT_HIDDEN |
| 1207 | int bt_ctf_event_set_stream(struct bt_ctf_event *event, |
| 1208 | struct bt_ctf_stream *stream) |
| 1209 | { |
| 1210 | int ret = 0; |
| 1211 | |
| 1212 | if (!event) { |
| 1213 | ret = -1; |
| 1214 | goto end; |
| 1215 | } |
| 1216 | |
| 1217 | if (event->stream && stream) { |
| 1218 | /* Already attached to a stream */ |
| 1219 | ret = -1; |
| 1220 | goto end; |
| 1221 | } |
| 1222 | |
| 1223 | event->stream = stream; |
| 1224 | end: |
| 1225 | return ret; |
| 1226 | } |