| 1 | /* |
| 2 | * trace.c |
| 3 | * |
| 4 | * Babeltrace CTF IR - Trace |
| 5 | * |
| 6 | * Copyright 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-ir/trace-internal.h> |
| 30 | #include <babeltrace/ctf-ir/clock-internal.h> |
| 31 | #include <babeltrace/ctf-ir/stream-internal.h> |
| 32 | #include <babeltrace/ctf-ir/stream-class-internal.h> |
| 33 | #include <babeltrace/ctf-writer/functor-internal.h> |
| 34 | #include <babeltrace/ctf-ir/event-types-internal.h> |
| 35 | #include <babeltrace/ctf-ir/attributes-internal.h> |
| 36 | #include <babeltrace/ctf-ir/utils.h> |
| 37 | #include <babeltrace/compiler.h> |
| 38 | #include <babeltrace/objects.h> |
| 39 | |
| 40 | #define DEFAULT_IDENTIFIER_SIZE 128 |
| 41 | #define DEFAULT_METADATA_STRING_SIZE 4096 |
| 42 | |
| 43 | static |
| 44 | void bt_ctf_trace_destroy(struct bt_ctf_ref *ref); |
| 45 | static |
| 46 | int init_trace_packet_header(struct bt_ctf_trace *trace); |
| 47 | static |
| 48 | void bt_ctf_trace_freeze(struct bt_ctf_trace *trace); |
| 49 | |
| 50 | static |
| 51 | const unsigned int field_type_aliases_alignments[] = { |
| 52 | [FIELD_TYPE_ALIAS_UINT5_T] = 1, |
| 53 | [FIELD_TYPE_ALIAS_UINT8_T ... FIELD_TYPE_ALIAS_UINT16_T] = 8, |
| 54 | [FIELD_TYPE_ALIAS_UINT27_T] = 1, |
| 55 | [FIELD_TYPE_ALIAS_UINT32_T ... FIELD_TYPE_ALIAS_UINT64_T] = 8, |
| 56 | }; |
| 57 | |
| 58 | static |
| 59 | const unsigned int field_type_aliases_sizes[] = { |
| 60 | [FIELD_TYPE_ALIAS_UINT5_T] = 5, |
| 61 | [FIELD_TYPE_ALIAS_UINT8_T] = 8, |
| 62 | [FIELD_TYPE_ALIAS_UINT16_T] = 16, |
| 63 | [FIELD_TYPE_ALIAS_UINT27_T] = 27, |
| 64 | [FIELD_TYPE_ALIAS_UINT32_T] = 32, |
| 65 | [FIELD_TYPE_ALIAS_UINT64_T] = 64, |
| 66 | }; |
| 67 | |
| 68 | static |
| 69 | void put_stream_class(struct bt_ctf_stream_class *stream_class) |
| 70 | { |
| 71 | (void) bt_ctf_stream_class_set_trace(stream_class, NULL); |
| 72 | bt_ctf_stream_class_put(stream_class); |
| 73 | } |
| 74 | |
| 75 | struct bt_ctf_trace *bt_ctf_trace_create(void) |
| 76 | { |
| 77 | struct bt_ctf_trace *trace = NULL; |
| 78 | |
| 79 | trace = g_new0(struct bt_ctf_trace, 1); |
| 80 | if (!trace) { |
| 81 | goto error; |
| 82 | } |
| 83 | |
| 84 | bt_ctf_trace_set_byte_order(trace, BT_CTF_BYTE_ORDER_NATIVE); |
| 85 | bt_ctf_ref_init(&trace->ref_count); |
| 86 | trace->clocks = g_ptr_array_new_with_free_func( |
| 87 | (GDestroyNotify) bt_ctf_clock_put); |
| 88 | trace->streams = g_ptr_array_new_with_free_func( |
| 89 | (GDestroyNotify) bt_ctf_stream_put); |
| 90 | trace->stream_classes = g_ptr_array_new_with_free_func( |
| 91 | (GDestroyNotify) put_stream_class); |
| 92 | if (!trace->clocks || !trace->stream_classes || !trace->streams) { |
| 93 | goto error_destroy; |
| 94 | } |
| 95 | |
| 96 | /* Generate a trace UUID */ |
| 97 | uuid_generate(trace->uuid); |
| 98 | if (init_trace_packet_header(trace)) { |
| 99 | goto error_destroy; |
| 100 | } |
| 101 | |
| 102 | /* Create the environment array object */ |
| 103 | trace->environment = bt_ctf_attributes_create(); |
| 104 | if (!trace->environment) { |
| 105 | goto error_destroy; |
| 106 | } |
| 107 | |
| 108 | return trace; |
| 109 | |
| 110 | error_destroy: |
| 111 | bt_ctf_trace_destroy(&trace->ref_count); |
| 112 | trace = NULL; |
| 113 | error: |
| 114 | return trace; |
| 115 | } |
| 116 | |
| 117 | void bt_ctf_trace_destroy(struct bt_ctf_ref *ref) |
| 118 | { |
| 119 | struct bt_ctf_trace *trace; |
| 120 | |
| 121 | if (!ref) { |
| 122 | return; |
| 123 | } |
| 124 | |
| 125 | trace = container_of(ref, struct bt_ctf_trace, ref_count); |
| 126 | if (trace->environment) { |
| 127 | bt_ctf_attributes_destroy(trace->environment); |
| 128 | } |
| 129 | |
| 130 | if (trace->clocks) { |
| 131 | g_ptr_array_free(trace->clocks, TRUE); |
| 132 | } |
| 133 | |
| 134 | if (trace->streams) { |
| 135 | g_ptr_array_free(trace->streams, TRUE); |
| 136 | } |
| 137 | |
| 138 | if (trace->stream_classes) { |
| 139 | g_ptr_array_free(trace->stream_classes, TRUE); |
| 140 | } |
| 141 | |
| 142 | bt_ctf_field_type_put(trace->packet_header_type); |
| 143 | g_free(trace); |
| 144 | } |
| 145 | |
| 146 | struct bt_ctf_stream *bt_ctf_trace_create_stream(struct bt_ctf_trace *trace, |
| 147 | struct bt_ctf_stream_class *stream_class) |
| 148 | { |
| 149 | int ret; |
| 150 | int stream_class_found = 0; |
| 151 | size_t i; |
| 152 | struct bt_ctf_stream *stream = NULL; |
| 153 | |
| 154 | if (!trace || !stream_class) { |
| 155 | goto error; |
| 156 | } |
| 157 | |
| 158 | stream = bt_ctf_stream_create(stream_class, trace); |
| 159 | if (!stream) { |
| 160 | goto error; |
| 161 | } |
| 162 | |
| 163 | for (i = 0; i < trace->stream_classes->len; i++) { |
| 164 | if (trace->stream_classes->pdata[i] == stream_class) { |
| 165 | stream_class_found = 1; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | if (!stream_class_found) { |
| 170 | ret = bt_ctf_trace_add_stream_class(trace, stream_class); |
| 171 | if (ret) { |
| 172 | goto error; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | bt_ctf_stream_get(stream); |
| 177 | g_ptr_array_add(trace->streams, stream); |
| 178 | |
| 179 | return stream; |
| 180 | error: |
| 181 | bt_ctf_stream_put(stream); |
| 182 | return NULL; |
| 183 | } |
| 184 | |
| 185 | int bt_ctf_trace_set_environment_field(struct bt_ctf_trace *trace, |
| 186 | const char *name, struct bt_object *value) |
| 187 | { |
| 188 | int ret = 0; |
| 189 | |
| 190 | if (!trace || !name || !value || |
| 191 | bt_ctf_validate_identifier(name) || |
| 192 | !(bt_object_is_integer(value) || bt_object_is_string(value))) { |
| 193 | ret = -1; |
| 194 | goto end; |
| 195 | } |
| 196 | |
| 197 | if (strchr(name, ' ')) { |
| 198 | ret = -1; |
| 199 | goto end; |
| 200 | } |
| 201 | |
| 202 | if (trace->frozen) { |
| 203 | /* |
| 204 | * New environment fields may be added to a frozen trace, |
| 205 | * but existing fields may not be changed. |
| 206 | * |
| 207 | * The object passed is frozen like all other attributes. |
| 208 | */ |
| 209 | struct bt_object *attribute = |
| 210 | bt_ctf_attributes_get_field_value_by_name( |
| 211 | trace->environment, name); |
| 212 | |
| 213 | if (attribute) { |
| 214 | BT_OBJECT_PUT(attribute); |
| 215 | ret = -1; |
| 216 | goto end; |
| 217 | } |
| 218 | |
| 219 | bt_object_freeze(value); |
| 220 | } |
| 221 | |
| 222 | ret = bt_ctf_attributes_set_field_value(trace->environment, name, |
| 223 | value); |
| 224 | |
| 225 | end: |
| 226 | return ret; |
| 227 | } |
| 228 | |
| 229 | int bt_ctf_trace_set_environment_field_string(struct bt_ctf_trace *trace, |
| 230 | const char *name, const char *value) |
| 231 | { |
| 232 | int ret = 0; |
| 233 | struct bt_object *env_value_string_obj = NULL; |
| 234 | |
| 235 | if (!trace || !name || !value) { |
| 236 | ret = -1; |
| 237 | goto end; |
| 238 | } |
| 239 | |
| 240 | if (trace->frozen) { |
| 241 | /* |
| 242 | * New environment fields may be added to a frozen trace, |
| 243 | * but existing fields may not be changed. |
| 244 | */ |
| 245 | struct bt_object *attribute = |
| 246 | bt_ctf_attributes_get_field_value_by_name( |
| 247 | trace->environment, name); |
| 248 | |
| 249 | if (attribute) { |
| 250 | BT_OBJECT_PUT(attribute); |
| 251 | ret = -1; |
| 252 | goto end; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | env_value_string_obj = bt_object_string_create_init(value); |
| 257 | |
| 258 | if (!env_value_string_obj) { |
| 259 | ret = -1; |
| 260 | goto end; |
| 261 | } |
| 262 | |
| 263 | if (trace->frozen) { |
| 264 | bt_object_freeze(env_value_string_obj); |
| 265 | } |
| 266 | ret = bt_ctf_trace_set_environment_field(trace, name, |
| 267 | env_value_string_obj); |
| 268 | |
| 269 | end: |
| 270 | BT_OBJECT_PUT(env_value_string_obj); |
| 271 | |
| 272 | return ret; |
| 273 | } |
| 274 | |
| 275 | int bt_ctf_trace_set_environment_field_integer(struct bt_ctf_trace *trace, |
| 276 | const char *name, int64_t value) |
| 277 | { |
| 278 | int ret = 0; |
| 279 | struct bt_object *env_value_integer_obj = NULL; |
| 280 | |
| 281 | if (!trace || !name) { |
| 282 | ret = -1; |
| 283 | goto end; |
| 284 | } |
| 285 | |
| 286 | if (trace->frozen) { |
| 287 | /* |
| 288 | * New environment fields may be added to a frozen trace, |
| 289 | * but existing fields may not be changed. |
| 290 | */ |
| 291 | struct bt_object *attribute = |
| 292 | bt_ctf_attributes_get_field_value_by_name( |
| 293 | trace->environment, name); |
| 294 | |
| 295 | if (attribute) { |
| 296 | BT_OBJECT_PUT(attribute); |
| 297 | ret = -1; |
| 298 | goto end; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | env_value_integer_obj = bt_object_integer_create_init(value); |
| 303 | if (!env_value_integer_obj) { |
| 304 | ret = -1; |
| 305 | goto end; |
| 306 | } |
| 307 | |
| 308 | ret = bt_ctf_trace_set_environment_field(trace, name, |
| 309 | env_value_integer_obj); |
| 310 | if (trace->frozen) { |
| 311 | bt_object_freeze(env_value_integer_obj); |
| 312 | } |
| 313 | end: |
| 314 | BT_OBJECT_PUT(env_value_integer_obj); |
| 315 | |
| 316 | return ret; |
| 317 | } |
| 318 | |
| 319 | int bt_ctf_trace_get_environment_field_count(struct bt_ctf_trace *trace) |
| 320 | { |
| 321 | int ret = 0; |
| 322 | |
| 323 | if (!trace) { |
| 324 | ret = -1; |
| 325 | goto end; |
| 326 | } |
| 327 | |
| 328 | ret = bt_ctf_attributes_get_count(trace->environment); |
| 329 | |
| 330 | end: |
| 331 | return ret; |
| 332 | } |
| 333 | |
| 334 | const char * |
| 335 | bt_ctf_trace_get_environment_field_name(struct bt_ctf_trace *trace, |
| 336 | int index) |
| 337 | { |
| 338 | const char *ret = NULL; |
| 339 | |
| 340 | if (!trace) { |
| 341 | goto end; |
| 342 | } |
| 343 | |
| 344 | ret = bt_ctf_attributes_get_field_name(trace->environment, index); |
| 345 | |
| 346 | end: |
| 347 | return ret; |
| 348 | } |
| 349 | |
| 350 | struct bt_object *bt_ctf_trace_get_environment_field_value( |
| 351 | struct bt_ctf_trace *trace, int index) |
| 352 | { |
| 353 | struct bt_object *ret = NULL; |
| 354 | |
| 355 | if (!trace) { |
| 356 | goto end; |
| 357 | } |
| 358 | |
| 359 | ret = bt_ctf_attributes_get_field_value(trace->environment, index); |
| 360 | |
| 361 | end: |
| 362 | return ret; |
| 363 | } |
| 364 | |
| 365 | struct bt_object *bt_ctf_trace_get_environment_field_value_by_name( |
| 366 | struct bt_ctf_trace *trace, const char *name) |
| 367 | { |
| 368 | struct bt_object *ret = NULL; |
| 369 | |
| 370 | if (!trace || !name) { |
| 371 | goto end; |
| 372 | } |
| 373 | |
| 374 | ret = bt_ctf_attributes_get_field_value_by_name(trace->environment, |
| 375 | name); |
| 376 | |
| 377 | end: |
| 378 | return ret; |
| 379 | } |
| 380 | |
| 381 | int bt_ctf_trace_add_clock(struct bt_ctf_trace *trace, |
| 382 | struct bt_ctf_clock *clock) |
| 383 | { |
| 384 | int ret = 0; |
| 385 | struct search_query query = { .value = clock, .found = 0 }; |
| 386 | |
| 387 | if (!trace || !clock) { |
| 388 | ret = -1; |
| 389 | goto end; |
| 390 | } |
| 391 | |
| 392 | /* Check for duplicate clocks */ |
| 393 | g_ptr_array_foreach(trace->clocks, value_exists, &query); |
| 394 | if (query.found) { |
| 395 | ret = -1; |
| 396 | goto end; |
| 397 | } |
| 398 | |
| 399 | bt_ctf_clock_get(clock); |
| 400 | g_ptr_array_add(trace->clocks, clock); |
| 401 | end: |
| 402 | return ret; |
| 403 | } |
| 404 | |
| 405 | int bt_ctf_trace_get_clock_count(struct bt_ctf_trace *trace) |
| 406 | { |
| 407 | int ret = -1; |
| 408 | |
| 409 | if (!trace) { |
| 410 | goto end; |
| 411 | } |
| 412 | |
| 413 | ret = trace->clocks->len; |
| 414 | end: |
| 415 | return ret; |
| 416 | } |
| 417 | |
| 418 | struct bt_ctf_clock *bt_ctf_trace_get_clock(struct bt_ctf_trace *trace, |
| 419 | int index) |
| 420 | { |
| 421 | struct bt_ctf_clock *clock = NULL; |
| 422 | |
| 423 | if (!trace || index < 0 || index >= trace->clocks->len) { |
| 424 | goto end; |
| 425 | } |
| 426 | |
| 427 | clock = g_ptr_array_index(trace->clocks, index); |
| 428 | bt_ctf_clock_get(clock); |
| 429 | end: |
| 430 | return clock; |
| 431 | } |
| 432 | |
| 433 | int bt_ctf_trace_add_stream_class(struct bt_ctf_trace *trace, |
| 434 | struct bt_ctf_stream_class *stream_class) |
| 435 | { |
| 436 | int ret, i; |
| 437 | int64_t stream_id; |
| 438 | |
| 439 | if (!trace || !stream_class) { |
| 440 | ret = -1; |
| 441 | goto end; |
| 442 | } |
| 443 | |
| 444 | for (i = 0; i < trace->stream_classes->len; i++) { |
| 445 | if (trace->stream_classes->pdata[i] == stream_class) { |
| 446 | ret = -1; |
| 447 | goto end; |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | stream_id = bt_ctf_stream_class_get_id(stream_class); |
| 452 | if (stream_id < 0) { |
| 453 | stream_id = trace->next_stream_id++; |
| 454 | |
| 455 | /* Try to assign a new stream id */ |
| 456 | for (i = 0; i < trace->stream_classes->len; i++) { |
| 457 | if (stream_id == bt_ctf_stream_class_get_id( |
| 458 | trace->stream_classes->pdata[i])) { |
| 459 | /* Duplicate stream id found */ |
| 460 | ret = -1; |
| 461 | goto end; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | if (_bt_ctf_stream_class_set_id(stream_class, |
| 466 | stream_id)) { |
| 467 | /* TODO Should retry with a different stream id */ |
| 468 | ret = -1; |
| 469 | goto end; |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /* Set weak reference to trace in stream class */ |
| 474 | ret = bt_ctf_stream_class_set_trace(stream_class, trace); |
| 475 | if (ret) { |
| 476 | /* Stream class already part of another trace */ |
| 477 | goto end; |
| 478 | } |
| 479 | |
| 480 | bt_ctf_stream_class_get(stream_class); |
| 481 | g_ptr_array_add(trace->stream_classes, stream_class); |
| 482 | |
| 483 | /* |
| 484 | * Freeze the trace and its packet header. |
| 485 | * |
| 486 | * All field type byte orders set as "native" byte ordering can now be |
| 487 | * safely set to trace's own endianness, including the stream class'. |
| 488 | */ |
| 489 | bt_ctf_field_type_set_native_byte_order(trace->packet_header_type, |
| 490 | trace->byte_order); |
| 491 | ret = bt_ctf_stream_class_set_byte_order(stream_class, |
| 492 | trace->byte_order == LITTLE_ENDIAN ? |
| 493 | BT_CTF_BYTE_ORDER_LITTLE_ENDIAN : BT_CTF_BYTE_ORDER_BIG_ENDIAN); |
| 494 | if (ret) { |
| 495 | goto end; |
| 496 | } |
| 497 | |
| 498 | bt_ctf_stream_class_freeze(stream_class); |
| 499 | bt_ctf_trace_freeze(trace); |
| 500 | end: |
| 501 | if (ret) { |
| 502 | (void) bt_ctf_stream_class_set_trace(stream_class, NULL); |
| 503 | } |
| 504 | return ret; |
| 505 | } |
| 506 | |
| 507 | int bt_ctf_trace_get_stream_class_count(struct bt_ctf_trace *trace) |
| 508 | { |
| 509 | int ret; |
| 510 | |
| 511 | if (!trace) { |
| 512 | ret = -1; |
| 513 | goto end; |
| 514 | } |
| 515 | |
| 516 | ret = trace->stream_classes->len; |
| 517 | end: |
| 518 | return ret; |
| 519 | } |
| 520 | |
| 521 | struct bt_ctf_stream_class *bt_ctf_trace_get_stream_class( |
| 522 | struct bt_ctf_trace *trace, int index) |
| 523 | { |
| 524 | struct bt_ctf_stream_class *stream_class = NULL; |
| 525 | |
| 526 | if (!trace || index < 0 || index >= trace->stream_classes->len) { |
| 527 | goto end; |
| 528 | } |
| 529 | |
| 530 | stream_class = g_ptr_array_index(trace->stream_classes, index); |
| 531 | bt_ctf_stream_class_get(stream_class); |
| 532 | end: |
| 533 | return stream_class; |
| 534 | } |
| 535 | |
| 536 | struct bt_ctf_clock *bt_ctf_trace_get_clock_by_name( |
| 537 | struct bt_ctf_trace *trace, const char *name) |
| 538 | { |
| 539 | size_t i; |
| 540 | struct bt_ctf_clock *clock = NULL; |
| 541 | |
| 542 | if (!trace || !name) { |
| 543 | goto end; |
| 544 | } |
| 545 | |
| 546 | for (i = 0; i < trace->clocks->len; ++i) { |
| 547 | struct bt_ctf_clock *cur_clk = |
| 548 | g_ptr_array_index(trace->clocks, i); |
| 549 | const char *cur_clk_name = bt_ctf_clock_get_name(cur_clk); |
| 550 | |
| 551 | if (!cur_clk_name) { |
| 552 | goto end; |
| 553 | } |
| 554 | |
| 555 | if (!strcmp(cur_clk_name, name)) { |
| 556 | clock = cur_clk; |
| 557 | bt_ctf_clock_get(clock); |
| 558 | goto end; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | end: |
| 563 | return clock; |
| 564 | } |
| 565 | |
| 566 | BT_HIDDEN |
| 567 | const char *get_byte_order_string(int byte_order) |
| 568 | { |
| 569 | const char *string; |
| 570 | |
| 571 | switch (byte_order) { |
| 572 | case LITTLE_ENDIAN: |
| 573 | string = "le"; |
| 574 | break; |
| 575 | case BIG_ENDIAN: |
| 576 | string = "be"; |
| 577 | break; |
| 578 | default: |
| 579 | string = "unknown"; |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | return string; |
| 584 | } |
| 585 | |
| 586 | static |
| 587 | int append_trace_metadata(struct bt_ctf_trace *trace, |
| 588 | struct metadata_context *context) |
| 589 | { |
| 590 | unsigned char *uuid = trace->uuid; |
| 591 | int ret; |
| 592 | |
| 593 | g_string_append(context->string, "trace {\n"); |
| 594 | |
| 595 | g_string_append(context->string, "\tmajor = 1;\n"); |
| 596 | g_string_append(context->string, "\tminor = 8;\n"); |
| 597 | |
| 598 | g_string_append_printf(context->string, |
| 599 | "\tuuid = \"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\";\n", |
| 600 | uuid[0], uuid[1], uuid[2], uuid[3], |
| 601 | uuid[4], uuid[5], uuid[6], uuid[7], |
| 602 | uuid[8], uuid[9], uuid[10], uuid[11], |
| 603 | uuid[12], uuid[13], uuid[14], uuid[15]); |
| 604 | g_string_append_printf(context->string, "\tbyte_order = %s;\n", |
| 605 | get_byte_order_string(trace->byte_order)); |
| 606 | |
| 607 | g_string_append(context->string, "\tpacket.header := "); |
| 608 | context->current_indentation_level++; |
| 609 | g_string_assign(context->field_name, ""); |
| 610 | ret = bt_ctf_field_type_serialize(trace->packet_header_type, |
| 611 | context); |
| 612 | if (ret) { |
| 613 | goto end; |
| 614 | } |
| 615 | context->current_indentation_level--; |
| 616 | |
| 617 | g_string_append(context->string, ";\n};\n\n"); |
| 618 | end: |
| 619 | return ret; |
| 620 | } |
| 621 | |
| 622 | static |
| 623 | void append_env_metadata(struct bt_ctf_trace *trace, |
| 624 | struct metadata_context *context) |
| 625 | { |
| 626 | int i; |
| 627 | int env_size; |
| 628 | |
| 629 | env_size = bt_ctf_attributes_get_count(trace->environment); |
| 630 | |
| 631 | if (env_size <= 0) { |
| 632 | return; |
| 633 | } |
| 634 | |
| 635 | g_string_append(context->string, "env {\n"); |
| 636 | |
| 637 | for (i = 0; i < env_size; ++i) { |
| 638 | struct bt_object *env_field_value_obj = NULL; |
| 639 | const char *entry_name; |
| 640 | |
| 641 | entry_name = bt_ctf_attributes_get_field_name( |
| 642 | trace->environment, i); |
| 643 | env_field_value_obj = bt_ctf_attributes_get_field_value( |
| 644 | trace->environment, i); |
| 645 | |
| 646 | if (!entry_name || !env_field_value_obj) { |
| 647 | goto loop_next; |
| 648 | } |
| 649 | |
| 650 | switch (bt_object_get_type(env_field_value_obj)) { |
| 651 | case BT_OBJECT_TYPE_INTEGER: |
| 652 | { |
| 653 | int ret; |
| 654 | int64_t int_value; |
| 655 | |
| 656 | ret = bt_object_integer_get(env_field_value_obj, |
| 657 | &int_value); |
| 658 | |
| 659 | if (ret) { |
| 660 | goto loop_next; |
| 661 | } |
| 662 | |
| 663 | g_string_append_printf(context->string, |
| 664 | "\t%s = %" PRId64 ";\n", entry_name, |
| 665 | int_value); |
| 666 | break; |
| 667 | } |
| 668 | case BT_OBJECT_TYPE_STRING: |
| 669 | { |
| 670 | int ret; |
| 671 | const char *str_value; |
| 672 | char *escaped_str = NULL; |
| 673 | |
| 674 | ret = bt_object_string_get(env_field_value_obj, |
| 675 | &str_value); |
| 676 | |
| 677 | if (ret) { |
| 678 | goto loop_next; |
| 679 | } |
| 680 | |
| 681 | escaped_str = g_strescape(str_value, NULL); |
| 682 | |
| 683 | if (!escaped_str) { |
| 684 | goto loop_next; |
| 685 | } |
| 686 | |
| 687 | g_string_append_printf(context->string, |
| 688 | "\t%s = \"%s\";\n", entry_name, escaped_str); |
| 689 | free(escaped_str); |
| 690 | break; |
| 691 | } |
| 692 | |
| 693 | default: |
| 694 | goto loop_next; |
| 695 | } |
| 696 | |
| 697 | loop_next: |
| 698 | BT_OBJECT_PUT(env_field_value_obj); |
| 699 | } |
| 700 | |
| 701 | g_string_append(context->string, "};\n\n"); |
| 702 | } |
| 703 | |
| 704 | char *bt_ctf_trace_get_metadata_string(struct bt_ctf_trace *trace) |
| 705 | { |
| 706 | char *metadata = NULL; |
| 707 | struct metadata_context *context = NULL; |
| 708 | int err = 0; |
| 709 | size_t i; |
| 710 | |
| 711 | if (!trace) { |
| 712 | goto end; |
| 713 | } |
| 714 | |
| 715 | context = g_new0(struct metadata_context, 1); |
| 716 | if (!context) { |
| 717 | goto end; |
| 718 | } |
| 719 | |
| 720 | context->field_name = g_string_sized_new(DEFAULT_IDENTIFIER_SIZE); |
| 721 | context->string = g_string_sized_new(DEFAULT_METADATA_STRING_SIZE); |
| 722 | g_string_append(context->string, "/* CTF 1.8 */\n\n"); |
| 723 | if (append_trace_metadata(trace, context)) { |
| 724 | goto error; |
| 725 | } |
| 726 | append_env_metadata(trace, context); |
| 727 | g_ptr_array_foreach(trace->clocks, |
| 728 | (GFunc)bt_ctf_clock_serialize, context); |
| 729 | |
| 730 | for (i = 0; i < trace->stream_classes->len; i++) { |
| 731 | err = bt_ctf_stream_class_serialize( |
| 732 | trace->stream_classes->pdata[i], context); |
| 733 | if (err) { |
| 734 | goto error; |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | metadata = context->string->str; |
| 739 | error: |
| 740 | g_string_free(context->string, err ? TRUE : FALSE); |
| 741 | g_string_free(context->field_name, TRUE); |
| 742 | g_free(context); |
| 743 | end: |
| 744 | return metadata; |
| 745 | } |
| 746 | |
| 747 | enum bt_ctf_byte_order bt_ctf_trace_get_byte_order(struct bt_ctf_trace *trace) |
| 748 | { |
| 749 | enum bt_ctf_byte_order ret = BT_CTF_BYTE_ORDER_UNKNOWN; |
| 750 | |
| 751 | if (!trace) { |
| 752 | goto end; |
| 753 | } |
| 754 | |
| 755 | switch (trace->byte_order) { |
| 756 | case BIG_ENDIAN: |
| 757 | ret = BT_CTF_BYTE_ORDER_BIG_ENDIAN; |
| 758 | break; |
| 759 | case LITTLE_ENDIAN: |
| 760 | ret = BT_CTF_BYTE_ORDER_LITTLE_ENDIAN; |
| 761 | break; |
| 762 | default: |
| 763 | break; |
| 764 | } |
| 765 | end: |
| 766 | return ret; |
| 767 | } |
| 768 | |
| 769 | int bt_ctf_trace_set_byte_order(struct bt_ctf_trace *trace, |
| 770 | enum bt_ctf_byte_order byte_order) |
| 771 | { |
| 772 | int ret = 0; |
| 773 | int internal_byte_order; |
| 774 | |
| 775 | if (!trace || trace->frozen) { |
| 776 | ret = -1; |
| 777 | goto end; |
| 778 | } |
| 779 | |
| 780 | switch (byte_order) { |
| 781 | case BT_CTF_BYTE_ORDER_NATIVE: |
| 782 | /* |
| 783 | * This doesn't make sense since the CTF specification defines |
| 784 | * the "native" byte order as "the byte order described in the |
| 785 | * trace description". However, this behavior had been |
| 786 | * implemented as part of v1.2 and is kept to maintain |
| 787 | * compatibility. |
| 788 | * |
| 789 | * This may be changed on a major version bump only. |
| 790 | */ |
| 791 | internal_byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? |
| 792 | LITTLE_ENDIAN : BIG_ENDIAN; |
| 793 | break; |
| 794 | case BT_CTF_BYTE_ORDER_LITTLE_ENDIAN: |
| 795 | internal_byte_order = LITTLE_ENDIAN; |
| 796 | break; |
| 797 | case BT_CTF_BYTE_ORDER_BIG_ENDIAN: |
| 798 | case BT_CTF_BYTE_ORDER_NETWORK: |
| 799 | internal_byte_order = BIG_ENDIAN; |
| 800 | break; |
| 801 | default: |
| 802 | ret = -1; |
| 803 | goto end; |
| 804 | } |
| 805 | |
| 806 | trace->byte_order = internal_byte_order; |
| 807 | end: |
| 808 | return ret; |
| 809 | } |
| 810 | |
| 811 | struct bt_ctf_field_type *bt_ctf_trace_get_packet_header_type( |
| 812 | struct bt_ctf_trace *trace) |
| 813 | { |
| 814 | struct bt_ctf_field_type *field_type = NULL; |
| 815 | |
| 816 | if (!trace) { |
| 817 | goto end; |
| 818 | } |
| 819 | |
| 820 | bt_ctf_field_type_get(trace->packet_header_type); |
| 821 | field_type = trace->packet_header_type; |
| 822 | end: |
| 823 | return field_type; |
| 824 | } |
| 825 | |
| 826 | int bt_ctf_trace_set_packet_header_type(struct bt_ctf_trace *trace, |
| 827 | struct bt_ctf_field_type *packet_header_type) |
| 828 | { |
| 829 | int ret = 0; |
| 830 | |
| 831 | if (!trace || !packet_header_type || trace->frozen) { |
| 832 | ret = -1; |
| 833 | goto end; |
| 834 | } |
| 835 | |
| 836 | /* packet_header_type must be a structure */ |
| 837 | if (bt_ctf_field_type_get_type_id(packet_header_type) != |
| 838 | CTF_TYPE_STRUCT) { |
| 839 | ret = -1; |
| 840 | goto end; |
| 841 | } |
| 842 | |
| 843 | bt_ctf_field_type_get(packet_header_type); |
| 844 | bt_ctf_field_type_put(trace->packet_header_type); |
| 845 | trace->packet_header_type = packet_header_type; |
| 846 | end: |
| 847 | return ret; |
| 848 | } |
| 849 | |
| 850 | void bt_ctf_trace_get(struct bt_ctf_trace *trace) |
| 851 | { |
| 852 | if (!trace) { |
| 853 | return; |
| 854 | } |
| 855 | |
| 856 | bt_ctf_ref_get(&trace->ref_count); |
| 857 | } |
| 858 | |
| 859 | void bt_ctf_trace_put(struct bt_ctf_trace *trace) |
| 860 | { |
| 861 | if (!trace) { |
| 862 | return; |
| 863 | } |
| 864 | |
| 865 | bt_ctf_ref_put(&trace->ref_count, bt_ctf_trace_destroy); |
| 866 | } |
| 867 | |
| 868 | BT_HIDDEN |
| 869 | struct bt_ctf_field_type *get_field_type(enum field_type_alias alias) |
| 870 | { |
| 871 | unsigned int alignment, size; |
| 872 | struct bt_ctf_field_type *field_type; |
| 873 | |
| 874 | if (alias >= NR_FIELD_TYPE_ALIAS) { |
| 875 | return NULL; |
| 876 | } |
| 877 | |
| 878 | alignment = field_type_aliases_alignments[alias]; |
| 879 | size = field_type_aliases_sizes[alias]; |
| 880 | field_type = bt_ctf_field_type_integer_create(size); |
| 881 | bt_ctf_field_type_set_alignment(field_type, alignment); |
| 882 | return field_type; |
| 883 | } |
| 884 | |
| 885 | static |
| 886 | void bt_ctf_trace_freeze(struct bt_ctf_trace *trace) |
| 887 | { |
| 888 | bt_ctf_attributes_freeze(trace->environment); |
| 889 | trace->frozen = 1; |
| 890 | } |
| 891 | |
| 892 | static |
| 893 | int init_trace_packet_header(struct bt_ctf_trace *trace) |
| 894 | { |
| 895 | int ret = 0; |
| 896 | struct bt_ctf_field *magic = NULL, *uuid_array = NULL; |
| 897 | struct bt_ctf_field_type *_uint32_t = |
| 898 | get_field_type(FIELD_TYPE_ALIAS_UINT32_T); |
| 899 | struct bt_ctf_field_type *_uint8_t = |
| 900 | get_field_type(FIELD_TYPE_ALIAS_UINT8_T); |
| 901 | struct bt_ctf_field_type *trace_packet_header_type = |
| 902 | bt_ctf_field_type_structure_create(); |
| 903 | struct bt_ctf_field_type *uuid_array_type = |
| 904 | bt_ctf_field_type_array_create(_uint8_t, 16); |
| 905 | |
| 906 | if (!trace_packet_header_type || !uuid_array_type) { |
| 907 | ret = -1; |
| 908 | goto end; |
| 909 | } |
| 910 | |
| 911 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, |
| 912 | _uint32_t, "magic"); |
| 913 | if (ret) { |
| 914 | goto end; |
| 915 | } |
| 916 | |
| 917 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, |
| 918 | uuid_array_type, "uuid"); |
| 919 | if (ret) { |
| 920 | goto end; |
| 921 | } |
| 922 | |
| 923 | ret = bt_ctf_field_type_structure_add_field(trace_packet_header_type, |
| 924 | _uint32_t, "stream_id"); |
| 925 | if (ret) { |
| 926 | goto end; |
| 927 | } |
| 928 | |
| 929 | ret = bt_ctf_trace_set_packet_header_type(trace, |
| 930 | trace_packet_header_type); |
| 931 | if (ret) { |
| 932 | goto end; |
| 933 | } |
| 934 | end: |
| 935 | bt_ctf_field_type_put(uuid_array_type); |
| 936 | bt_ctf_field_type_put(_uint32_t); |
| 937 | bt_ctf_field_type_put(_uint8_t); |
| 938 | bt_ctf_field_put(magic); |
| 939 | bt_ctf_field_put(uuid_array); |
| 940 | bt_ctf_field_type_put(trace_packet_header_type); |
| 941 | |
| 942 | return ret; |
| 943 | } |