| 1 | /* |
| 2 | * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 3 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | * of this software and associated documentation files (the "Software"), to deal |
| 7 | * in the Software without restriction, including without limitation the rights |
| 8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | * copies of the Software, and to permit persons to whom the Software is |
| 10 | * furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 21 | * SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #define BT_LOG_TAG "CTF-WRITER-STREAM" |
| 25 | #include <babeltrace/lib-logging-internal.h> |
| 26 | |
| 27 | #include <babeltrace/ref.h> |
| 28 | #include <babeltrace/ctf-ir/event-class-internal.h> |
| 29 | #include <babeltrace/ctf-writer/writer-internal.h> |
| 30 | #include <babeltrace/ctf-writer/stream.h> |
| 31 | #include <babeltrace/ctf-writer/stream-internal.h> |
| 32 | #include <babeltrace/ctf-writer/stream-class-internal.h> |
| 33 | #include <babeltrace/ctf-writer/field-types.h> |
| 34 | #include <babeltrace/ctf-writer/fields-internal.h> |
| 35 | #include <babeltrace/ctf-writer/trace-internal.h> |
| 36 | #include <babeltrace/ctf-writer/event-internal.h> |
| 37 | #include <babeltrace/compiler-internal.h> |
| 38 | #include <babeltrace/assert-internal.h> |
| 39 | #include <babeltrace/assert-pre-internal.h> |
| 40 | #include <unistd.h> |
| 41 | #include <stdint.h> |
| 42 | #include <inttypes.h> |
| 43 | |
| 44 | static |
| 45 | void bt_ctf_stream_destroy(struct bt_object *obj); |
| 46 | |
| 47 | static |
| 48 | int try_set_structure_field_integer(struct bt_ctf_field *, char *, uint64_t); |
| 49 | |
| 50 | static |
| 51 | int set_integer_field_value(struct bt_ctf_field* field, uint64_t value) |
| 52 | { |
| 53 | int ret = 0; |
| 54 | struct bt_ctf_field_type *field_type = NULL; |
| 55 | |
| 56 | if (!field) { |
| 57 | BT_LOGW_STR("Invalid parameter: field is NULL."); |
| 58 | ret = -1; |
| 59 | goto end; |
| 60 | } |
| 61 | |
| 62 | field_type = bt_ctf_field_get_type(field); |
| 63 | BT_ASSERT(field_type); |
| 64 | |
| 65 | if (bt_ctf_field_type_get_type_id(field_type) != |
| 66 | BT_CTF_FIELD_TYPE_ID_INTEGER) { |
| 67 | /* Not an integer and the value is unset, error. */ |
| 68 | BT_LOGW("Invalid parameter: field's type is not an integer field type: " |
| 69 | "field-addr=%p, ft-addr=%p, ft-id=%s", |
| 70 | field, field_type, |
| 71 | bt_common_field_type_id_string((int) |
| 72 | bt_ctf_field_type_get_type_id(field_type))); |
| 73 | ret = -1; |
| 74 | goto end; |
| 75 | } |
| 76 | |
| 77 | if (bt_ctf_field_type_integer_is_signed(field_type)) { |
| 78 | ret = bt_ctf_field_integer_signed_set_value(field, (int64_t) value); |
| 79 | if (ret) { |
| 80 | /* Value is out of range, error. */ |
| 81 | BT_LOGW("Cannot set signed integer field's value: " |
| 82 | "addr=%p, value=%" PRId64, |
| 83 | field, (int64_t) value); |
| 84 | goto end; |
| 85 | } |
| 86 | } else { |
| 87 | ret = bt_ctf_field_integer_unsigned_set_value(field, value); |
| 88 | if (ret) { |
| 89 | /* Value is out of range, error. */ |
| 90 | BT_LOGW("Cannot set unsigned integer field's value: " |
| 91 | "addr=%p, value=%" PRIu64, |
| 92 | field, value); |
| 93 | goto end; |
| 94 | } |
| 95 | } |
| 96 | end: |
| 97 | bt_put(field_type); |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | static |
| 102 | int set_packet_header_magic(struct bt_ctf_stream *stream) |
| 103 | { |
| 104 | int ret = 0; |
| 105 | struct bt_ctf_field *magic_field = bt_ctf_field_structure_get_field_by_name( |
| 106 | stream->packet_header, "magic"); |
| 107 | const uint32_t magic_value = 0xc1fc1fc1; |
| 108 | |
| 109 | BT_ASSERT(stream); |
| 110 | |
| 111 | if (!magic_field) { |
| 112 | /* No magic field found. Not an error, skip. */ |
| 113 | BT_LOGV("No field named `magic` in packet header: skipping: " |
| 114 | "stream-addr=%p, stream-name=\"%s\"", |
| 115 | stream, bt_ctf_stream_get_name(stream)); |
| 116 | goto end; |
| 117 | } |
| 118 | |
| 119 | ret = bt_ctf_field_integer_unsigned_set_value(magic_field, |
| 120 | (uint64_t) magic_value); |
| 121 | |
| 122 | if (ret) { |
| 123 | BT_LOGW("Cannot set packet header field's `magic` integer field's value: " |
| 124 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 125 | stream, bt_ctf_stream_get_name(stream), |
| 126 | magic_field, (uint64_t) magic_value); |
| 127 | } else { |
| 128 | BT_LOGV("Set packet header field's `magic` field's value: " |
| 129 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 130 | stream, bt_ctf_stream_get_name(stream), |
| 131 | magic_field, (uint64_t) magic_value); |
| 132 | } |
| 133 | end: |
| 134 | bt_put(magic_field); |
| 135 | return ret; |
| 136 | } |
| 137 | |
| 138 | static |
| 139 | int set_packet_header_uuid(struct bt_ctf_stream *stream) |
| 140 | { |
| 141 | int ret = 0; |
| 142 | int64_t i; |
| 143 | struct bt_ctf_trace *trace = NULL; |
| 144 | struct bt_ctf_field *uuid_field = bt_ctf_field_structure_get_field_by_name( |
| 145 | stream->packet_header, "uuid"); |
| 146 | |
| 147 | BT_ASSERT(stream); |
| 148 | |
| 149 | if (!uuid_field) { |
| 150 | /* No uuid field found. Not an error, skip. */ |
| 151 | BT_LOGV("No field named `uuid` in packet header: skipping: " |
| 152 | "stream-addr=%p, stream-name=\"%s\"", |
| 153 | stream, bt_ctf_stream_get_name(stream)); |
| 154 | goto end; |
| 155 | } |
| 156 | |
| 157 | trace = (struct bt_ctf_trace *) |
| 158 | bt_object_get_parent(&stream->common.base); |
| 159 | |
| 160 | for (i = 0; i < 16; i++) { |
| 161 | struct bt_ctf_field *uuid_element = |
| 162 | bt_ctf_field_array_get_field(uuid_field, i); |
| 163 | |
| 164 | ret = bt_ctf_field_integer_unsigned_set_value( |
| 165 | uuid_element, (uint64_t) trace->common.uuid[i]); |
| 166 | bt_put(uuid_element); |
| 167 | if (ret) { |
| 168 | BT_LOGW("Cannot set integer field's value (for `uuid` packet header field): " |
| 169 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, " |
| 170 | "value=%" PRIu64 ", index=%" PRId64, |
| 171 | stream, bt_ctf_stream_get_name(stream), |
| 172 | uuid_element, (uint64_t) trace->common.uuid[i], i); |
| 173 | goto end; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | BT_LOGV("Set packet header field's `uuid` field's value: " |
| 178 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p", |
| 179 | stream, bt_ctf_stream_get_name(stream), uuid_field); |
| 180 | |
| 181 | end: |
| 182 | bt_put(uuid_field); |
| 183 | BT_PUT(trace); |
| 184 | return ret; |
| 185 | } |
| 186 | static |
| 187 | int set_packet_header_stream_id(struct bt_ctf_stream *stream) |
| 188 | { |
| 189 | int ret = 0; |
| 190 | uint32_t stream_id; |
| 191 | struct bt_ctf_field *stream_id_field = |
| 192 | bt_ctf_field_structure_get_field_by_name( |
| 193 | stream->packet_header, "stream_id"); |
| 194 | |
| 195 | if (!stream_id_field) { |
| 196 | /* No stream_id field found. Not an error, skip. */ |
| 197 | BT_LOGV("No field named `stream_id` in packet header: skipping: " |
| 198 | "stream-addr=%p, stream-name=\"%s\"", |
| 199 | stream, bt_ctf_stream_get_name(stream)); |
| 200 | goto end; |
| 201 | } |
| 202 | |
| 203 | stream_id = stream->common.stream_class->id; |
| 204 | ret = bt_ctf_field_integer_unsigned_set_value(stream_id_field, |
| 205 | (uint64_t) stream_id); |
| 206 | if (ret) { |
| 207 | BT_LOGW("Cannot set packet header field's `stream_id` integer field's value: " |
| 208 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 209 | stream, bt_ctf_stream_get_name(stream), |
| 210 | stream_id_field, (uint64_t) stream_id); |
| 211 | } else { |
| 212 | BT_LOGV("Set packet header field's `stream_id` field's value: " |
| 213 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 214 | stream, bt_ctf_stream_get_name(stream), |
| 215 | stream_id_field, (uint64_t) stream_id); |
| 216 | } |
| 217 | |
| 218 | end: |
| 219 | bt_put(stream_id_field); |
| 220 | return ret; |
| 221 | } |
| 222 | |
| 223 | static |
| 224 | int auto_populate_packet_header(struct bt_ctf_stream *stream) |
| 225 | { |
| 226 | int ret = 0; |
| 227 | |
| 228 | if (!stream->packet_header) { |
| 229 | goto end; |
| 230 | } |
| 231 | |
| 232 | ret = set_packet_header_magic(stream); |
| 233 | if (ret) { |
| 234 | BT_LOGW("Cannot set packet header's magic number field: " |
| 235 | "stream-addr=%p, stream-name=\"%s\"", |
| 236 | stream, bt_ctf_stream_get_name(stream)); |
| 237 | goto end; |
| 238 | } |
| 239 | |
| 240 | ret = set_packet_header_uuid(stream); |
| 241 | if (ret) { |
| 242 | BT_LOGW("Cannot set packet header's UUID field: " |
| 243 | "stream-addr=%p, stream-name=\"%s\"", |
| 244 | stream, bt_ctf_stream_get_name(stream)); |
| 245 | goto end; |
| 246 | } |
| 247 | |
| 248 | ret = set_packet_header_stream_id(stream); |
| 249 | if (ret) { |
| 250 | BT_LOGW("Cannot set packet header's stream class ID field: " |
| 251 | "stream-addr=%p, stream-name=\"%s\"", |
| 252 | stream, bt_ctf_stream_get_name(stream)); |
| 253 | goto end; |
| 254 | } |
| 255 | |
| 256 | BT_LOGV("Automatically populated stream's packet header's known fields: " |
| 257 | "stream-addr=%p, stream-name=\"%s\"", |
| 258 | stream, bt_ctf_stream_get_name(stream)); |
| 259 | |
| 260 | end: |
| 261 | return ret; |
| 262 | } |
| 263 | |
| 264 | static |
| 265 | int set_packet_context_packet_size(struct bt_ctf_stream *stream) |
| 266 | { |
| 267 | int ret = 0; |
| 268 | struct bt_ctf_field *field = bt_ctf_field_structure_get_field_by_name( |
| 269 | stream->packet_context, "packet_size"); |
| 270 | |
| 271 | BT_ASSERT(stream); |
| 272 | |
| 273 | if (!field) { |
| 274 | /* No packet size field found. Not an error, skip. */ |
| 275 | BT_LOGV("No field named `packet_size` in packet context: skipping: " |
| 276 | "stream-addr=%p, stream-name=\"%s\"", |
| 277 | stream, bt_ctf_stream_get_name(stream)); |
| 278 | goto end; |
| 279 | } |
| 280 | |
| 281 | ret = bt_ctf_field_integer_unsigned_set_value(field, |
| 282 | stream->pos.packet_size); |
| 283 | if (ret) { |
| 284 | BT_LOGW("Cannot set packet context field's `packet_size` integer field's value: " |
| 285 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 286 | stream, bt_ctf_stream_get_name(stream), |
| 287 | field, stream->pos.packet_size); |
| 288 | } else { |
| 289 | BT_LOGV("Set packet context field's `packet_size` field's value: " |
| 290 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 291 | stream, bt_ctf_stream_get_name(stream), |
| 292 | field, stream->pos.packet_size); |
| 293 | } |
| 294 | |
| 295 | end: |
| 296 | bt_put(field); |
| 297 | return ret; |
| 298 | } |
| 299 | |
| 300 | static |
| 301 | int set_packet_context_content_size(struct bt_ctf_stream *stream) |
| 302 | { |
| 303 | int ret = 0; |
| 304 | struct bt_ctf_field *field = bt_ctf_field_structure_get_field_by_name( |
| 305 | stream->packet_context, "content_size"); |
| 306 | |
| 307 | BT_ASSERT(stream); |
| 308 | |
| 309 | if (!field) { |
| 310 | /* No content size field found. Not an error, skip. */ |
| 311 | BT_LOGV("No field named `content_size` in packet context: skipping: " |
| 312 | "stream-addr=%p, stream-name=\"%s\"", |
| 313 | stream, bt_ctf_stream_get_name(stream)); |
| 314 | goto end; |
| 315 | } |
| 316 | |
| 317 | ret = bt_ctf_field_integer_unsigned_set_value(field, |
| 318 | stream->pos.offset); |
| 319 | if (ret) { |
| 320 | BT_LOGW("Cannot set packet context field's `content_size` integer field's value: " |
| 321 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRId64, |
| 322 | stream, bt_ctf_stream_get_name(stream), |
| 323 | field, stream->pos.offset); |
| 324 | } else { |
| 325 | BT_LOGV("Set packet context field's `content_size` field's value: " |
| 326 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRId64, |
| 327 | stream, bt_ctf_stream_get_name(stream), |
| 328 | field, stream->pos.offset); |
| 329 | } |
| 330 | |
| 331 | end: |
| 332 | bt_put(field); |
| 333 | return ret; |
| 334 | } |
| 335 | |
| 336 | static |
| 337 | int set_packet_context_events_discarded(struct bt_ctf_stream *stream) |
| 338 | { |
| 339 | int ret = 0; |
| 340 | struct bt_ctf_field *field = bt_ctf_field_structure_get_field_by_name( |
| 341 | stream->packet_context, "events_discarded"); |
| 342 | |
| 343 | BT_ASSERT(stream); |
| 344 | |
| 345 | if (!field) { |
| 346 | /* No discarded events count field found. Not an error, skip. */ |
| 347 | BT_LOGV("No field named `events_discarded` in packet context: skipping: " |
| 348 | "stream-addr=%p, stream-name=\"%s\"", |
| 349 | stream, bt_ctf_stream_get_name(stream)); |
| 350 | goto end; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * If the field is set by the user, make sure that the value is |
| 355 | * greater than or equal to the stream's current count of |
| 356 | * discarded events. We do not allow wrapping here. If it's |
| 357 | * valid, update the stream's current count. |
| 358 | */ |
| 359 | if (bt_ctf_field_is_set_recursive(field)) { |
| 360 | uint64_t user_val; |
| 361 | |
| 362 | ret = bt_ctf_field_integer_unsigned_get_value(field, |
| 363 | &user_val); |
| 364 | if (ret) { |
| 365 | BT_LOGW("Cannot get packet context `events_discarded` field's unsigned value: " |
| 366 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p", |
| 367 | stream, bt_ctf_stream_get_name(stream), field); |
| 368 | goto end; |
| 369 | } |
| 370 | |
| 371 | if (user_val < stream->discarded_events) { |
| 372 | BT_LOGW("Invalid packet context `events_discarded` field's unsigned value: " |
| 373 | "value is lesser than the stream's current discarded events count: " |
| 374 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, " |
| 375 | "value=%" PRIu64 ", " |
| 376 | "stream-discarded-events-count=%" PRIu64, |
| 377 | stream, bt_ctf_stream_get_name(stream), field, |
| 378 | user_val, stream->discarded_events); |
| 379 | goto end; |
| 380 | } |
| 381 | |
| 382 | stream->discarded_events = user_val; |
| 383 | } else { |
| 384 | ret = bt_ctf_field_integer_unsigned_set_value(field, |
| 385 | stream->discarded_events); |
| 386 | if (ret) { |
| 387 | BT_LOGW("Cannot set packet context field's `events_discarded` integer field's value: " |
| 388 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 389 | stream, bt_ctf_stream_get_name(stream), |
| 390 | field, stream->discarded_events); |
| 391 | } else { |
| 392 | BT_LOGV("Set packet context field's `events_discarded` field's value: " |
| 393 | "stream-addr=%p, stream-name=\"%s\", field-addr=%p, value=%" PRIu64, |
| 394 | stream, bt_ctf_stream_get_name(stream), |
| 395 | field, stream->discarded_events); |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | end: |
| 400 | bt_put(field); |
| 401 | return ret; |
| 402 | } |
| 403 | |
| 404 | static |
| 405 | void update_clock_value(uint64_t *val, uint64_t new_val, |
| 406 | unsigned int new_val_size) |
| 407 | { |
| 408 | const uint64_t pow2 = 1ULL << new_val_size; |
| 409 | const uint64_t mask = pow2 - 1; |
| 410 | uint64_t val_masked; |
| 411 | |
| 412 | #ifdef BT_LOG_ENABLED_VERBOSE |
| 413 | uint64_t old_val = *val; |
| 414 | #endif |
| 415 | |
| 416 | if (new_val_size == 64) { |
| 417 | *val = new_val; |
| 418 | goto end; |
| 419 | } |
| 420 | |
| 421 | val_masked = *val & mask; |
| 422 | |
| 423 | if (new_val < val_masked) { |
| 424 | /* Wrapped once */ |
| 425 | new_val |= pow2; |
| 426 | } |
| 427 | |
| 428 | *val &= ~mask; |
| 429 | *val |= new_val; |
| 430 | |
| 431 | end: |
| 432 | BT_LOGV("Updated clock value: old-val=%" PRIu64 ", new-val=%" PRIu64, |
| 433 | old_val, *val); |
| 434 | return; |
| 435 | } |
| 436 | |
| 437 | static |
| 438 | int visit_field_update_clock_value(struct bt_ctf_field *field, uint64_t *val) |
| 439 | { |
| 440 | int ret = 0; |
| 441 | struct bt_field_common *field_common = (void *) field; |
| 442 | |
| 443 | if (!field) { |
| 444 | goto end; |
| 445 | } |
| 446 | |
| 447 | switch (bt_ctf_field_get_type_id(field)) { |
| 448 | case BT_CTF_FIELD_TYPE_ID_INTEGER: |
| 449 | { |
| 450 | struct bt_ctf_clock_class *cc = |
| 451 | bt_ctf_field_type_integer_get_mapped_clock_class( |
| 452 | (void *) field_common->type); |
| 453 | int val_size; |
| 454 | uint64_t uval; |
| 455 | |
| 456 | if (!cc) { |
| 457 | goto end; |
| 458 | } |
| 459 | |
| 460 | bt_put(cc); |
| 461 | val_size = bt_ctf_field_type_integer_get_size( |
| 462 | (void *) field_common->type); |
| 463 | BT_ASSERT(val_size >= 1); |
| 464 | |
| 465 | if (bt_ctf_field_type_integer_is_signed( |
| 466 | (void *) field_common->type)) { |
| 467 | int64_t ival; |
| 468 | |
| 469 | ret = bt_ctf_field_integer_signed_get_value(field, &ival); |
| 470 | uval = (uint64_t) ival; |
| 471 | } else { |
| 472 | ret = bt_ctf_field_integer_unsigned_get_value(field, &uval); |
| 473 | } |
| 474 | |
| 475 | if (ret) { |
| 476 | /* Not set */ |
| 477 | goto end; |
| 478 | } |
| 479 | |
| 480 | update_clock_value(val, uval, val_size); |
| 481 | break; |
| 482 | } |
| 483 | case BT_CTF_FIELD_TYPE_ID_ENUM: |
| 484 | { |
| 485 | struct bt_ctf_field *int_field = |
| 486 | bt_ctf_field_enumeration_get_container(field); |
| 487 | |
| 488 | BT_ASSERT(int_field); |
| 489 | ret = visit_field_update_clock_value(int_field, val); |
| 490 | bt_put(int_field); |
| 491 | break; |
| 492 | } |
| 493 | case BT_CTF_FIELD_TYPE_ID_ARRAY: |
| 494 | { |
| 495 | uint64_t i; |
| 496 | int64_t len = bt_ctf_field_type_array_get_length( |
| 497 | (void *) field_common->type); |
| 498 | |
| 499 | BT_ASSERT(len >= 0); |
| 500 | |
| 501 | for (i = 0; i < len; i++) { |
| 502 | struct bt_ctf_field *elem_field = |
| 503 | bt_ctf_field_array_get_field(field, i); |
| 504 | |
| 505 | BT_ASSERT(elem_field); |
| 506 | ret = visit_field_update_clock_value(elem_field, val); |
| 507 | bt_put(elem_field); |
| 508 | if (ret) { |
| 509 | goto end; |
| 510 | } |
| 511 | } |
| 512 | break; |
| 513 | } |
| 514 | case BT_CTF_FIELD_TYPE_ID_SEQUENCE: |
| 515 | { |
| 516 | uint64_t i; |
| 517 | int64_t len = bt_field_common_sequence_get_length( |
| 518 | (void *) field); |
| 519 | |
| 520 | if (len < 0) { |
| 521 | ret = -1; |
| 522 | goto end; |
| 523 | } |
| 524 | |
| 525 | for (i = 0; i < len; i++) { |
| 526 | struct bt_ctf_field *elem_field = |
| 527 | bt_ctf_field_sequence_get_field(field, i); |
| 528 | |
| 529 | BT_ASSERT(elem_field); |
| 530 | ret = visit_field_update_clock_value(elem_field, val); |
| 531 | bt_put(elem_field); |
| 532 | if (ret) { |
| 533 | goto end; |
| 534 | } |
| 535 | } |
| 536 | break; |
| 537 | } |
| 538 | case BT_CTF_FIELD_TYPE_ID_STRUCT: |
| 539 | { |
| 540 | uint64_t i; |
| 541 | int64_t len = bt_ctf_field_type_structure_get_field_count( |
| 542 | (void *) field_common->type); |
| 543 | |
| 544 | BT_ASSERT(len >= 0); |
| 545 | |
| 546 | for (i = 0; i < len; i++) { |
| 547 | struct bt_ctf_field *member_field = |
| 548 | bt_ctf_field_structure_get_field_by_index(field, i); |
| 549 | |
| 550 | BT_ASSERT(member_field); |
| 551 | ret = visit_field_update_clock_value(member_field, val); |
| 552 | bt_put(member_field); |
| 553 | if (ret) { |
| 554 | goto end; |
| 555 | } |
| 556 | } |
| 557 | break; |
| 558 | } |
| 559 | case BT_CTF_FIELD_TYPE_ID_VARIANT: |
| 560 | { |
| 561 | struct bt_ctf_field *cur_field = |
| 562 | bt_ctf_field_variant_get_current_field(field); |
| 563 | |
| 564 | if (!cur_field) { |
| 565 | ret = -1; |
| 566 | goto end; |
| 567 | } |
| 568 | |
| 569 | ret = visit_field_update_clock_value(cur_field, val); |
| 570 | bt_put(cur_field); |
| 571 | break; |
| 572 | } |
| 573 | default: |
| 574 | break; |
| 575 | } |
| 576 | |
| 577 | end: |
| 578 | return ret; |
| 579 | } |
| 580 | |
| 581 | int visit_event_update_clock_value(struct bt_ctf_event *event, uint64_t *val) |
| 582 | { |
| 583 | int ret = 0; |
| 584 | struct bt_ctf_field *field; |
| 585 | |
| 586 | field = bt_ctf_event_get_header(event); |
| 587 | ret = visit_field_update_clock_value(field, val); |
| 588 | bt_put(field); |
| 589 | if (ret) { |
| 590 | BT_LOGW_STR("Cannot automatically update clock value in " |
| 591 | "event's header."); |
| 592 | goto end; |
| 593 | } |
| 594 | |
| 595 | field = bt_ctf_event_get_stream_event_context(event); |
| 596 | ret = visit_field_update_clock_value(field, val); |
| 597 | bt_put(field); |
| 598 | if (ret) { |
| 599 | BT_LOGW_STR("Cannot automatically update clock value in " |
| 600 | "event's stream event context."); |
| 601 | goto end; |
| 602 | } |
| 603 | |
| 604 | field = bt_ctf_event_get_context(event); |
| 605 | ret = visit_field_update_clock_value(field, val); |
| 606 | bt_put(field); |
| 607 | if (ret) { |
| 608 | BT_LOGW_STR("Cannot automatically update clock value in " |
| 609 | "event's context."); |
| 610 | goto end; |
| 611 | } |
| 612 | |
| 613 | field = bt_ctf_event_get_payload_field(event); |
| 614 | ret = visit_field_update_clock_value(field, val); |
| 615 | bt_put(field); |
| 616 | if (ret) { |
| 617 | BT_LOGW_STR("Cannot automatically update clock value in " |
| 618 | "event's payload."); |
| 619 | goto end; |
| 620 | } |
| 621 | |
| 622 | end: |
| 623 | return ret; |
| 624 | } |
| 625 | |
| 626 | static |
| 627 | int set_packet_context_timestamps(struct bt_ctf_stream *stream) |
| 628 | { |
| 629 | int ret = 0; |
| 630 | uint64_t val; |
| 631 | uint64_t cur_clock_value; |
| 632 | uint64_t init_clock_value = 0; |
| 633 | struct bt_ctf_field *ts_begin_field = bt_ctf_field_structure_get_field_by_name( |
| 634 | stream->packet_context, "timestamp_begin"); |
| 635 | struct bt_ctf_field *ts_end_field = bt_ctf_field_structure_get_field_by_name( |
| 636 | stream->packet_context, "timestamp_end"); |
| 637 | struct bt_field_common *packet_context = |
| 638 | (void *) stream->packet_context; |
| 639 | uint64_t i; |
| 640 | int64_t len; |
| 641 | |
| 642 | if (ts_begin_field && bt_ctf_field_is_set_recursive(ts_begin_field)) { |
| 643 | /* Use provided `timestamp_begin` value as starting value */ |
| 644 | ret = bt_ctf_field_integer_unsigned_get_value(ts_begin_field, &val); |
| 645 | BT_ASSERT(ret == 0); |
| 646 | init_clock_value = val; |
| 647 | } else if (stream->last_ts_end != -1ULL) { |
| 648 | /* Use last packet's ending timestamp as starting value */ |
| 649 | init_clock_value = stream->last_ts_end; |
| 650 | } |
| 651 | |
| 652 | cur_clock_value = init_clock_value; |
| 653 | |
| 654 | if (stream->last_ts_end != -1ULL && |
| 655 | cur_clock_value < stream->last_ts_end) { |
| 656 | BT_LOGW("Packet's initial timestamp is less than previous " |
| 657 | "packet's final timestamp: " |
| 658 | "stream-addr=%p, stream-name=\"%s\", " |
| 659 | "cur-packet-ts-begin=%" PRIu64 ", " |
| 660 | "prev-packet-ts-end=%" PRIu64, |
| 661 | stream, bt_ctf_stream_get_name(stream), |
| 662 | cur_clock_value, stream->last_ts_end); |
| 663 | ret = -1; |
| 664 | goto end; |
| 665 | } |
| 666 | |
| 667 | /* |
| 668 | * Visit all the packet context fields, followed by all the |
| 669 | * fields of all the events, in order, updating our current |
| 670 | * clock value as we visit. |
| 671 | * |
| 672 | * While visiting the packet context fields, do not consider |
| 673 | * `timestamp_begin` and `timestamp_end` because this function's |
| 674 | * purpose is to set them anyway. Also do not consider |
| 675 | * `packet_size`, `content_size`, `events_discarded`, and |
| 676 | * `packet_seq_num` if they are not set because those are |
| 677 | * autopopulating fields. |
| 678 | */ |
| 679 | len = bt_ctf_field_type_structure_get_field_count( |
| 680 | (void *) packet_context->type); |
| 681 | BT_ASSERT(len >= 0); |
| 682 | |
| 683 | for (i = 0; i < len; i++) { |
| 684 | const char *member_name; |
| 685 | struct bt_ctf_field *member_field; |
| 686 | |
| 687 | ret = bt_ctf_field_type_structure_get_field_by_index( |
| 688 | (void *) packet_context->type, &member_name, NULL, i); |
| 689 | BT_ASSERT(ret == 0); |
| 690 | |
| 691 | if (strcmp(member_name, "timestamp_begin") == 0 || |
| 692 | strcmp(member_name, "timestamp_end") == 0) { |
| 693 | continue; |
| 694 | } |
| 695 | |
| 696 | member_field = bt_ctf_field_structure_get_field_by_index( |
| 697 | stream->packet_context, i); |
| 698 | BT_ASSERT(member_field); |
| 699 | |
| 700 | if (strcmp(member_name, "packet_size") == 0 && |
| 701 | !bt_ctf_field_is_set_recursive(member_field)) { |
| 702 | bt_put(member_field); |
| 703 | continue; |
| 704 | } |
| 705 | |
| 706 | if (strcmp(member_name, "content_size") == 0 && |
| 707 | !bt_ctf_field_is_set_recursive(member_field)) { |
| 708 | bt_put(member_field); |
| 709 | continue; |
| 710 | } |
| 711 | |
| 712 | if (strcmp(member_name, "events_discarded") == 0 && |
| 713 | !bt_ctf_field_is_set_recursive(member_field)) { |
| 714 | bt_put(member_field); |
| 715 | continue; |
| 716 | } |
| 717 | |
| 718 | if (strcmp(member_name, "packet_seq_num") == 0 && |
| 719 | !bt_ctf_field_is_set_recursive(member_field)) { |
| 720 | bt_put(member_field); |
| 721 | continue; |
| 722 | } |
| 723 | |
| 724 | ret = visit_field_update_clock_value(member_field, |
| 725 | &cur_clock_value); |
| 726 | bt_put(member_field); |
| 727 | if (ret) { |
| 728 | BT_LOGW("Cannot automatically update clock value " |
| 729 | "in stream's packet context: " |
| 730 | "stream-addr=%p, stream-name=\"%s\", " |
| 731 | "field-name=\"%s\"", |
| 732 | stream, bt_ctf_stream_get_name(stream), |
| 733 | member_name); |
| 734 | goto end; |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | for (i = 0; i < stream->events->len; i++) { |
| 739 | struct bt_ctf_event *event = g_ptr_array_index(stream->events, i); |
| 740 | |
| 741 | BT_ASSERT(event); |
| 742 | ret = visit_event_update_clock_value(event, &cur_clock_value); |
| 743 | if (ret) { |
| 744 | BT_LOGW("Cannot automatically update clock value " |
| 745 | "in stream's packet context: " |
| 746 | "stream-addr=%p, stream-name=\"%s\", " |
| 747 | "index=%" PRIu64 ", event-addr=%p, " |
| 748 | "event-class-id=%" PRId64 ", " |
| 749 | "event-class-name=\"%s\"", |
| 750 | stream, bt_ctf_stream_get_name(stream), |
| 751 | i, event, |
| 752 | bt_event_class_common_get_id(event->common.class), |
| 753 | bt_event_class_common_get_name(event->common.class)); |
| 754 | goto end; |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | /* |
| 759 | * Everything is visited, thus the current clock value |
| 760 | * corresponds to the ending timestamp. Validate this value |
| 761 | * against the provided value of `timestamp_end`, if any, |
| 762 | * otherwise set it. |
| 763 | */ |
| 764 | if (ts_end_field && bt_ctf_field_is_set_recursive(ts_end_field)) { |
| 765 | ret = bt_ctf_field_integer_unsigned_get_value(ts_end_field, &val); |
| 766 | BT_ASSERT(ret == 0); |
| 767 | |
| 768 | if (val < cur_clock_value) { |
| 769 | BT_LOGW("Packet's final timestamp is less than " |
| 770 | "computed packet's final timestamp: " |
| 771 | "stream-addr=%p, stream-name=\"%s\", " |
| 772 | "cur-packet-ts-end=%" PRIu64 ", " |
| 773 | "computed-packet-ts-end=%" PRIu64, |
| 774 | stream, bt_ctf_stream_get_name(stream), |
| 775 | val, cur_clock_value); |
| 776 | ret = -1; |
| 777 | goto end; |
| 778 | } |
| 779 | |
| 780 | stream->last_ts_end = val; |
| 781 | } |
| 782 | |
| 783 | if (ts_end_field && !bt_ctf_field_is_set_recursive(ts_end_field)) { |
| 784 | ret = set_integer_field_value(ts_end_field, cur_clock_value); |
| 785 | BT_ASSERT(ret == 0); |
| 786 | stream->last_ts_end = cur_clock_value; |
| 787 | } |
| 788 | |
| 789 | if (!ts_end_field) { |
| 790 | stream->last_ts_end = cur_clock_value; |
| 791 | } |
| 792 | |
| 793 | /* Set `timestamp_begin` field to initial clock value */ |
| 794 | if (ts_begin_field && !bt_ctf_field_is_set_recursive(ts_begin_field)) { |
| 795 | ret = set_integer_field_value(ts_begin_field, init_clock_value); |
| 796 | BT_ASSERT(ret == 0); |
| 797 | } |
| 798 | |
| 799 | end: |
| 800 | bt_put(ts_begin_field); |
| 801 | bt_put(ts_end_field); |
| 802 | return ret; |
| 803 | } |
| 804 | |
| 805 | static |
| 806 | int auto_populate_packet_context(struct bt_ctf_stream *stream, bool set_ts) |
| 807 | { |
| 808 | int ret = 0; |
| 809 | |
| 810 | if (!stream->packet_context) { |
| 811 | goto end; |
| 812 | } |
| 813 | |
| 814 | ret = set_packet_context_packet_size(stream); |
| 815 | if (ret) { |
| 816 | BT_LOGW("Cannot set packet context's packet size field: " |
| 817 | "stream-addr=%p, stream-name=\"%s\"", |
| 818 | stream, bt_ctf_stream_get_name(stream)); |
| 819 | goto end; |
| 820 | } |
| 821 | |
| 822 | ret = set_packet_context_content_size(stream); |
| 823 | if (ret) { |
| 824 | BT_LOGW("Cannot set packet context's content size field: " |
| 825 | "stream-addr=%p, stream-name=\"%s\"", |
| 826 | stream, bt_ctf_stream_get_name(stream)); |
| 827 | goto end; |
| 828 | } |
| 829 | |
| 830 | if (set_ts) { |
| 831 | ret = set_packet_context_timestamps(stream); |
| 832 | if (ret) { |
| 833 | BT_LOGW("Cannot set packet context's timestamp fields: " |
| 834 | "stream-addr=%p, stream-name=\"%s\"", |
| 835 | stream, bt_ctf_stream_get_name(stream)); |
| 836 | goto end; |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | ret = set_packet_context_events_discarded(stream); |
| 841 | if (ret) { |
| 842 | BT_LOGW("Cannot set packet context's discarded events count field: " |
| 843 | "stream-addr=%p, stream-name=\"%s\"", |
| 844 | stream, bt_ctf_stream_get_name(stream)); |
| 845 | goto end; |
| 846 | } |
| 847 | |
| 848 | BT_LOGV("Automatically populated stream's packet context's known fields: " |
| 849 | "stream-addr=%p, stream-name=\"%s\"", |
| 850 | stream, bt_ctf_stream_get_name(stream)); |
| 851 | |
| 852 | end: |
| 853 | return ret; |
| 854 | } |
| 855 | |
| 856 | static |
| 857 | void release_event(struct bt_ctf_event *event) |
| 858 | { |
| 859 | if (bt_object_get_ref_count(&event->common.base)) { |
| 860 | /* |
| 861 | * The event is being orphaned, but it must guarantee the |
| 862 | * existence of its event class for the duration of its |
| 863 | * lifetime. |
| 864 | */ |
| 865 | bt_get(event->common.class); |
| 866 | BT_PUT(event->common.base.parent); |
| 867 | } else { |
| 868 | bt_object_try_spec_release(&event->common.base); |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | static |
| 873 | int create_stream_file(struct bt_ctf_writer *writer, |
| 874 | struct bt_ctf_stream *stream) |
| 875 | { |
| 876 | int fd; |
| 877 | GString *filename = g_string_new(NULL); |
| 878 | int64_t stream_class_id; |
| 879 | char *file_path = NULL; |
| 880 | |
| 881 | BT_LOGD("Creating stream file: writer-addr=%p, stream-addr=%p, " |
| 882 | "stream-name=\"%s\", stream-class-addr=%p, stream-class-name=\"%s\"", |
| 883 | writer, stream, bt_ctf_stream_get_name(stream), |
| 884 | stream->common.stream_class, |
| 885 | stream->common.stream_class->name->str); |
| 886 | |
| 887 | if (stream->common.name && stream->common.name->len > 0) { |
| 888 | /* Use stream name's base name as prefix */ |
| 889 | gchar *basename = g_path_get_basename(stream->common.name->str); |
| 890 | |
| 891 | BT_ASSERT(basename); |
| 892 | |
| 893 | if (strcmp(basename, G_DIR_SEPARATOR_S) == 0) { |
| 894 | g_string_assign(filename, "stream"); |
| 895 | } else { |
| 896 | g_string_assign(filename, basename); |
| 897 | } |
| 898 | |
| 899 | g_free(basename); |
| 900 | goto append_ids; |
| 901 | } |
| 902 | |
| 903 | if (stream->common.stream_class->name && |
| 904 | stream->common.stream_class->name->len > 0) { |
| 905 | /* Use stream class name's base name as prefix */ |
| 906 | gchar *basename = |
| 907 | g_path_get_basename( |
| 908 | stream->common.stream_class->name->str); |
| 909 | |
| 910 | BT_ASSERT(basename); |
| 911 | |
| 912 | if (strcmp(basename, G_DIR_SEPARATOR_S) == 0) { |
| 913 | g_string_assign(filename, "stream"); |
| 914 | } else { |
| 915 | g_string_assign(filename, basename); |
| 916 | } |
| 917 | |
| 918 | g_free(basename); |
| 919 | goto append_ids; |
| 920 | } |
| 921 | |
| 922 | /* Default to using `stream-` as prefix */ |
| 923 | g_string_assign(filename, "stream"); |
| 924 | |
| 925 | append_ids: |
| 926 | stream_class_id = bt_stream_class_common_get_id(stream->common.stream_class); |
| 927 | BT_ASSERT(stream_class_id >= 0); |
| 928 | BT_ASSERT(stream->common.id >= 0); |
| 929 | g_string_append_printf(filename, "-%" PRId64 "-%" PRId64, |
| 930 | stream_class_id, stream->common.id); |
| 931 | |
| 932 | file_path = g_build_filename(writer->path->str, filename->str, NULL); |
| 933 | if (file_path == NULL) { |
| 934 | fd = -1; |
| 935 | goto end; |
| 936 | } |
| 937 | |
| 938 | fd = open(file_path, |
| 939 | O_RDWR | O_CREAT | O_TRUNC, |
| 940 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); |
| 941 | g_free(file_path); |
| 942 | if (fd < 0) { |
| 943 | BT_LOGW_ERRNO("Failed to open stream file for writing", |
| 944 | ": file_path=\"%s\", filename=\"%s\", ret=%d", |
| 945 | file_path, filename->str, fd); |
| 946 | goto end; |
| 947 | } |
| 948 | |
| 949 | BT_LOGD("Created stream file for writing: " |
| 950 | "stream-addr=%p, stream-name=\"%s\", " |
| 951 | "filename=\"%s\", fd=%d", stream, bt_ctf_stream_get_name(stream), |
| 952 | filename->str, fd); |
| 953 | |
| 954 | end: |
| 955 | g_string_free(filename, TRUE); |
| 956 | return fd; |
| 957 | } |
| 958 | |
| 959 | static |
| 960 | void set_stream_fd(struct bt_ctf_stream *stream, int fd) |
| 961 | { |
| 962 | (void) bt_ctf_stream_pos_init(&stream->pos, fd, O_RDWR); |
| 963 | stream->pos.fd = fd; |
| 964 | } |
| 965 | |
| 966 | BT_HIDDEN |
| 967 | struct bt_ctf_stream *bt_ctf_stream_create_with_id( |
| 968 | struct bt_ctf_stream_class *stream_class, |
| 969 | const char *name, uint64_t id) |
| 970 | { |
| 971 | int ret; |
| 972 | int fd; |
| 973 | struct bt_ctf_stream *stream = NULL; |
| 974 | struct bt_ctf_trace *trace = NULL; |
| 975 | struct bt_ctf_writer *writer = NULL; |
| 976 | |
| 977 | BT_LOGD("Creating CTF writer stream object: stream-class-addr=%p, " |
| 978 | "stream-class-name=\"%s\", stream-name=\"%s\", " |
| 979 | "stream-id=%" PRIu64, |
| 980 | stream_class, bt_ctf_stream_class_get_name(stream_class), |
| 981 | name, id); |
| 982 | stream = g_new0(struct bt_ctf_stream, 1); |
| 983 | if (!stream) { |
| 984 | BT_LOGE_STR("Failed to allocate one stream."); |
| 985 | goto error; |
| 986 | } |
| 987 | |
| 988 | if (id == -1ULL) { |
| 989 | id = stream_class->next_stream_id; |
| 990 | } |
| 991 | |
| 992 | ret = bt_stream_common_initialize(BT_TO_COMMON(stream), |
| 993 | BT_TO_COMMON(stream_class), name, id, bt_ctf_stream_destroy); |
| 994 | if (ret) { |
| 995 | /* bt_stream_common_initialize() logs errors */ |
| 996 | goto error; |
| 997 | } |
| 998 | |
| 999 | trace = BT_FROM_COMMON(bt_stream_class_common_borrow_trace( |
| 1000 | BT_TO_COMMON(stream_class))); |
| 1001 | if (!trace) { |
| 1002 | BT_LOGW("Invalid parameter: cannot create stream from a stream class which is not part of trace: " |
| 1003 | "stream-class-addr=%p, stream-class-name=\"%s\", " |
| 1004 | "stream-name=\"%s\"", |
| 1005 | stream_class, bt_ctf_stream_class_get_name(stream_class), |
| 1006 | name); |
| 1007 | goto error; |
| 1008 | } |
| 1009 | |
| 1010 | stream->pos.fd = -1; |
| 1011 | writer = (struct bt_ctf_writer *) |
| 1012 | bt_object_get_parent(&trace->common.base); |
| 1013 | stream->last_ts_end = -1ULL; |
| 1014 | BT_LOGD("CTF writer stream object belongs writer's trace: " |
| 1015 | "writer-addr=%p", writer); |
| 1016 | BT_ASSERT(writer); |
| 1017 | |
| 1018 | if (stream_class->common.packet_context_field_type) { |
| 1019 | BT_LOGD("Creating stream's packet context field: " |
| 1020 | "ft-addr=%p", |
| 1021 | stream_class->common.packet_context_field_type); |
| 1022 | stream->packet_context = bt_ctf_field_create( |
| 1023 | (void *) stream_class->common.packet_context_field_type); |
| 1024 | if (!stream->packet_context) { |
| 1025 | BT_LOGW_STR("Cannot create stream's packet context field."); |
| 1026 | goto error; |
| 1027 | } |
| 1028 | |
| 1029 | /* Initialize events_discarded */ |
| 1030 | ret = try_set_structure_field_integer( |
| 1031 | stream->packet_context, "events_discarded", 0); |
| 1032 | if (ret < 0) { |
| 1033 | BT_LOGW("Cannot set `events_discarded` field in packet context: " |
| 1034 | "ret=%d, packet-context-field-addr=%p", |
| 1035 | ret, stream->packet_context); |
| 1036 | goto error; |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | stream->events = g_ptr_array_new_with_free_func( |
| 1041 | (GDestroyNotify) release_event); |
| 1042 | if (!stream->events) { |
| 1043 | BT_LOGE_STR("Failed to allocate a GPtrArray."); |
| 1044 | goto error; |
| 1045 | } |
| 1046 | |
| 1047 | if (trace->common.packet_header_field_type) { |
| 1048 | BT_LOGD("Creating stream's packet header field: " |
| 1049 | "ft-addr=%p", trace->common.packet_header_field_type); |
| 1050 | stream->packet_header = |
| 1051 | bt_ctf_field_create( |
| 1052 | (void *) trace->common.packet_header_field_type); |
| 1053 | if (!stream->packet_header) { |
| 1054 | BT_LOGW_STR("Cannot create stream's packet header field."); |
| 1055 | goto error; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | /* |
| 1060 | * Attempt to populate the default trace packet header fields |
| 1061 | * (magic, uuid and stream_id). This will _not_ fail shall the |
| 1062 | * fields not be found or be of an incompatible type; they will |
| 1063 | * simply not be populated automatically. The user will have to |
| 1064 | * make sure to set the trace packet header fields himself |
| 1065 | * before flushing. |
| 1066 | */ |
| 1067 | ret = auto_populate_packet_header(stream); |
| 1068 | if (ret) { |
| 1069 | BT_LOGW_STR("Cannot automatically populate the stream's packet header."); |
| 1070 | goto error; |
| 1071 | } |
| 1072 | |
| 1073 | /* Create file associated with this stream */ |
| 1074 | fd = create_stream_file(writer, stream); |
| 1075 | if (fd < 0) { |
| 1076 | BT_LOGW_STR("Cannot create stream file."); |
| 1077 | goto error; |
| 1078 | } |
| 1079 | |
| 1080 | set_stream_fd(stream, fd); |
| 1081 | |
| 1082 | /* Freeze the writer */ |
| 1083 | BT_LOGD_STR("Freezing stream's CTF writer."); |
| 1084 | bt_ctf_writer_freeze(writer); |
| 1085 | |
| 1086 | /* Add this stream to the trace's streams */ |
| 1087 | g_ptr_array_add(trace->common.streams, stream); |
| 1088 | stream_class->next_stream_id++; |
| 1089 | BT_LOGD("Created stream object: addr=%p", stream); |
| 1090 | goto end; |
| 1091 | |
| 1092 | error: |
| 1093 | BT_PUT(stream); |
| 1094 | |
| 1095 | end: |
| 1096 | bt_put(writer); |
| 1097 | return stream; |
| 1098 | } |
| 1099 | |
| 1100 | struct bt_ctf_stream *bt_ctf_stream_create( |
| 1101 | struct bt_ctf_stream_class *stream_class, |
| 1102 | const char *name, uint64_t id_param) |
| 1103 | { |
| 1104 | return bt_ctf_stream_create_with_id(stream_class, |
| 1105 | name, id_param); |
| 1106 | } |
| 1107 | |
| 1108 | int bt_ctf_stream_get_discarded_events_count( |
| 1109 | struct bt_ctf_stream *stream, uint64_t *count) |
| 1110 | { |
| 1111 | int ret = 0; |
| 1112 | |
| 1113 | if (!stream) { |
| 1114 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1115 | ret = -1; |
| 1116 | goto end; |
| 1117 | } |
| 1118 | |
| 1119 | if (!count) { |
| 1120 | BT_LOGW_STR("Invalid parameter: count is NULL."); |
| 1121 | ret = -1; |
| 1122 | goto end; |
| 1123 | } |
| 1124 | |
| 1125 | if (stream->pos.fd < 0) { |
| 1126 | BT_LOGW("Invalid parameter: stream is not a CTF writer stream: " |
| 1127 | "stream-addr=%p, stream-name=\"%s\"", |
| 1128 | stream, bt_ctf_stream_get_name(stream)); |
| 1129 | ret = -1; |
| 1130 | goto end; |
| 1131 | } |
| 1132 | |
| 1133 | *count = (uint64_t) stream->discarded_events; |
| 1134 | |
| 1135 | end: |
| 1136 | return ret; |
| 1137 | } |
| 1138 | |
| 1139 | static |
| 1140 | int set_packet_context_events_discarded_field(struct bt_ctf_stream *stream, |
| 1141 | uint64_t count) |
| 1142 | { |
| 1143 | int ret = 0; |
| 1144 | struct bt_ctf_field *events_discarded_field = NULL; |
| 1145 | |
| 1146 | if (!stream->packet_context) { |
| 1147 | goto end; |
| 1148 | } |
| 1149 | |
| 1150 | events_discarded_field = bt_ctf_field_structure_get_field_by_name( |
| 1151 | stream->packet_context, "events_discarded"); |
| 1152 | if (!events_discarded_field) { |
| 1153 | goto end; |
| 1154 | } |
| 1155 | |
| 1156 | ret = bt_ctf_field_integer_unsigned_set_value( |
| 1157 | events_discarded_field, count); |
| 1158 | if (ret) { |
| 1159 | BT_LOGW("Cannot set packet context's `events_discarded` field: " |
| 1160 | "field-addr=%p, value=%" PRIu64, |
| 1161 | events_discarded_field, count); |
| 1162 | goto end; |
| 1163 | } |
| 1164 | |
| 1165 | end: |
| 1166 | bt_put(events_discarded_field); |
| 1167 | return ret; |
| 1168 | } |
| 1169 | |
| 1170 | void bt_ctf_stream_append_discarded_events(struct bt_ctf_stream *stream, |
| 1171 | uint64_t event_count) |
| 1172 | { |
| 1173 | int ret; |
| 1174 | uint64_t new_count; |
| 1175 | struct bt_ctf_field *events_discarded_field = NULL; |
| 1176 | |
| 1177 | if (!stream) { |
| 1178 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1179 | goto end; |
| 1180 | } |
| 1181 | |
| 1182 | BT_LOGV("Appending discarded events to stream: " |
| 1183 | "stream-addr=%p, stream-name=\"%s\", append-count=%" PRIu64, |
| 1184 | stream, bt_ctf_stream_get_name(stream), event_count); |
| 1185 | |
| 1186 | if (!stream->packet_context) { |
| 1187 | BT_LOGW_STR("Invalid parameter: stream has no packet context field."); |
| 1188 | goto end; |
| 1189 | } |
| 1190 | |
| 1191 | if (stream->pos.fd < 0) { |
| 1192 | BT_LOGW_STR("Invalid parameter: stream is not a CTF writer stream."); |
| 1193 | goto end; |
| 1194 | } |
| 1195 | |
| 1196 | events_discarded_field = bt_ctf_field_structure_get_field_by_name( |
| 1197 | stream->packet_context, "events_discarded"); |
| 1198 | if (!events_discarded_field) { |
| 1199 | BT_LOGW_STR("No field named `events_discarded` in stream's packet context."); |
| 1200 | goto end; |
| 1201 | } |
| 1202 | |
| 1203 | new_count = stream->discarded_events + event_count; |
| 1204 | if (new_count < stream->discarded_events) { |
| 1205 | BT_LOGW("New discarded events count is less than the stream's current discarded events count: " |
| 1206 | "cur-count=%" PRIu64 ", new-count=%" PRIu64, |
| 1207 | stream->discarded_events, new_count); |
| 1208 | goto end; |
| 1209 | } |
| 1210 | |
| 1211 | ret = set_packet_context_events_discarded_field(stream, new_count); |
| 1212 | if (ret) { |
| 1213 | /* set_packet_context_events_discarded_field() logs errors */ |
| 1214 | goto end; |
| 1215 | } |
| 1216 | |
| 1217 | stream->discarded_events = new_count; |
| 1218 | BT_LOGV("Appended discarded events to stream: " |
| 1219 | "stream-addr=%p, stream-name=\"%s\", append-count=%" PRIu64, |
| 1220 | stream, bt_ctf_stream_get_name(stream), event_count); |
| 1221 | |
| 1222 | end: |
| 1223 | bt_put(events_discarded_field); |
| 1224 | } |
| 1225 | |
| 1226 | static int auto_populate_event_header(struct bt_ctf_stream *stream, |
| 1227 | struct bt_ctf_event *event) |
| 1228 | { |
| 1229 | int ret = 0; |
| 1230 | struct bt_ctf_field *id_field = NULL, *timestamp_field = NULL; |
| 1231 | struct bt_ctf_clock_class *mapped_clock_class = NULL; |
| 1232 | struct bt_ctf_stream_class *stream_class = |
| 1233 | BT_FROM_COMMON(bt_stream_common_borrow_class( |
| 1234 | BT_TO_COMMON(stream))); |
| 1235 | int64_t event_class_id; |
| 1236 | |
| 1237 | BT_ASSERT(event); |
| 1238 | |
| 1239 | if (!event->common.header_field) { |
| 1240 | goto end; |
| 1241 | } |
| 1242 | |
| 1243 | if (event->common.frozen) { |
| 1244 | BT_LOGW_STR("Cannot populate event header field: event is frozen."); |
| 1245 | ret = -1; |
| 1246 | goto end; |
| 1247 | } |
| 1248 | |
| 1249 | BT_LOGV("Automatically populating event's header field: " |
| 1250 | "stream-addr=%p, stream-name=\"%s\", event-addr=%p", |
| 1251 | stream, bt_ctf_stream_get_name(stream), event); |
| 1252 | |
| 1253 | id_field = bt_ctf_field_structure_get_field_by_name( |
| 1254 | (void *) event->common.header_field->field, "id"); |
| 1255 | event_class_id = bt_event_class_common_get_id(event->common.class); |
| 1256 | BT_ASSERT(event_class_id >= 0); |
| 1257 | |
| 1258 | if (id_field && bt_ctf_field_get_type_id(id_field) == BT_CTF_FIELD_TYPE_ID_INTEGER) { |
| 1259 | ret = set_integer_field_value(id_field, event_class_id); |
| 1260 | if (ret) { |
| 1261 | BT_LOGW("Cannot set event header's `id` field's value: " |
| 1262 | "addr=%p, value=%" PRIu64, id_field, |
| 1263 | event_class_id); |
| 1264 | goto end; |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | /* |
| 1269 | * The conditions to automatically set the timestamp are: |
| 1270 | * |
| 1271 | * 1. The event header field "timestamp" exists and is an |
| 1272 | * integer field. |
| 1273 | * 2. This stream's class has a registered clock (set with |
| 1274 | * bt_ctf_stream_class_set_clock()). |
| 1275 | * 3. The "timestamp" field is not set. |
| 1276 | */ |
| 1277 | timestamp_field = bt_ctf_field_structure_get_field_by_name( |
| 1278 | (void *) event->common.header_field->field, "timestamp"); |
| 1279 | if (timestamp_field && stream_class->clock && |
| 1280 | bt_ctf_field_get_type_id(id_field) == BT_CTF_FIELD_TYPE_ID_INTEGER && |
| 1281 | !bt_ctf_field_is_set_recursive(timestamp_field)) { |
| 1282 | mapped_clock_class = |
| 1283 | bt_ctf_field_type_integer_get_mapped_clock_class( |
| 1284 | (void *) ((struct bt_field_common *) timestamp_field)->type); |
| 1285 | if (mapped_clock_class) { |
| 1286 | uint64_t timestamp; |
| 1287 | |
| 1288 | BT_ASSERT(mapped_clock_class == |
| 1289 | stream_class->clock->clock_class); |
| 1290 | ret = bt_ctf_clock_get_value( |
| 1291 | stream_class->clock, |
| 1292 | ×tamp); |
| 1293 | BT_ASSERT(ret == 0); |
| 1294 | ret = set_integer_field_value(timestamp_field, |
| 1295 | timestamp); |
| 1296 | if (ret) { |
| 1297 | BT_LOGW("Cannot set event header's `timestamp` field's value: " |
| 1298 | "addr=%p, value=%" PRIu64, |
| 1299 | timestamp_field, timestamp); |
| 1300 | goto end; |
| 1301 | } |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | BT_LOGV("Automatically populated event's header field: " |
| 1306 | "stream-addr=%p, stream-name=\"%s\", event-addr=%p", |
| 1307 | stream, bt_ctf_stream_get_name(stream), event); |
| 1308 | |
| 1309 | end: |
| 1310 | bt_put(id_field); |
| 1311 | bt_put(timestamp_field); |
| 1312 | bt_put(mapped_clock_class); |
| 1313 | return ret; |
| 1314 | } |
| 1315 | |
| 1316 | int bt_ctf_stream_append_event(struct bt_ctf_stream *stream, |
| 1317 | struct bt_ctf_event *event) |
| 1318 | { |
| 1319 | int ret = 0; |
| 1320 | |
| 1321 | if (!stream) { |
| 1322 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1323 | ret = -1; |
| 1324 | goto end; |
| 1325 | } |
| 1326 | |
| 1327 | if (!event) { |
| 1328 | BT_LOGW_STR("Invalid parameter: event is NULL."); |
| 1329 | ret = -1; |
| 1330 | goto end; |
| 1331 | } |
| 1332 | |
| 1333 | if (stream->pos.fd < 0) { |
| 1334 | BT_LOGW_STR("Invalid parameter: stream is not a CTF writer stream."); |
| 1335 | ret = -1; |
| 1336 | goto end; |
| 1337 | } |
| 1338 | |
| 1339 | BT_LOGV("Appending event to stream: " |
| 1340 | "stream-addr=%p, stream-name=\"%s\", event-addr=%p, " |
| 1341 | "event-class-name=\"%s\", event-class-id=%" PRId64, |
| 1342 | stream, bt_ctf_stream_get_name(stream), event, |
| 1343 | bt_event_class_common_get_name( |
| 1344 | bt_event_common_borrow_class(BT_TO_COMMON(event))), |
| 1345 | bt_event_class_common_get_id( |
| 1346 | bt_event_common_borrow_class(BT_TO_COMMON(event)))); |
| 1347 | |
| 1348 | /* |
| 1349 | * The event is not supposed to have a parent stream at this |
| 1350 | * point. The only other way an event can have a parent stream |
| 1351 | * is if it was assigned when setting a packet to the event, |
| 1352 | * in which case the packet's stream is not a writer stream, |
| 1353 | * and thus the user is trying to append an event which belongs |
| 1354 | * to another stream. |
| 1355 | */ |
| 1356 | if (event->common.base.parent) { |
| 1357 | ret = -1; |
| 1358 | goto end; |
| 1359 | } |
| 1360 | |
| 1361 | bt_object_set_parent(&event->common.base, &stream->common.base); |
| 1362 | BT_LOGV_STR("Automatically populating the header of the event to append."); |
| 1363 | ret = auto_populate_event_header(stream, event); |
| 1364 | if (ret) { |
| 1365 | /* auto_populate_event_header() reports errors */ |
| 1366 | goto error; |
| 1367 | } |
| 1368 | |
| 1369 | /* Make sure the various scopes of the event are set */ |
| 1370 | BT_LOGV_STR("Validating event to append."); |
| 1371 | BT_ASSERT_PRE(bt_event_common_validate(BT_TO_COMMON(event)) == 0, |
| 1372 | "Invalid event: %!+we", event); |
| 1373 | |
| 1374 | /* Save the new event and freeze it */ |
| 1375 | BT_LOGV_STR("Freezing the event to append."); |
| 1376 | bt_event_common_set_is_frozen(BT_TO_COMMON(event), true); |
| 1377 | g_ptr_array_add(stream->events, event); |
| 1378 | |
| 1379 | /* |
| 1380 | * Event had to hold a reference to its event class as long as it wasn't |
| 1381 | * part of the same trace hierarchy. From now on, the event and its |
| 1382 | * class share the same lifetime guarantees and the reference is no |
| 1383 | * longer needed. |
| 1384 | */ |
| 1385 | BT_LOGV_STR("Putting the event's class."); |
| 1386 | bt_put(event->common.class); |
| 1387 | BT_LOGV("Appended event to stream: " |
| 1388 | "stream-addr=%p, stream-name=\"%s\", event-addr=%p, " |
| 1389 | "event-class-name=\"%s\", event-class-id=%" PRId64, |
| 1390 | stream, bt_ctf_stream_get_name(stream), event, |
| 1391 | bt_event_class_common_get_name( |
| 1392 | bt_event_common_borrow_class(BT_TO_COMMON(event))), |
| 1393 | bt_event_class_common_get_id( |
| 1394 | bt_event_common_borrow_class(BT_TO_COMMON(event)))); |
| 1395 | |
| 1396 | end: |
| 1397 | return ret; |
| 1398 | |
| 1399 | error: |
| 1400 | /* |
| 1401 | * Orphan the event; we were not successful in associating it to |
| 1402 | * a stream. |
| 1403 | */ |
| 1404 | bt_object_set_parent(&event->common.base, NULL); |
| 1405 | return ret; |
| 1406 | } |
| 1407 | |
| 1408 | struct bt_ctf_field *bt_ctf_stream_get_packet_context(struct bt_ctf_stream *stream) |
| 1409 | { |
| 1410 | struct bt_ctf_field *packet_context = NULL; |
| 1411 | |
| 1412 | if (!stream) { |
| 1413 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1414 | goto end; |
| 1415 | } |
| 1416 | |
| 1417 | if (stream->pos.fd < 0) { |
| 1418 | BT_LOGW("Invalid parameter: stream is not a CTF writer stream: " |
| 1419 | "stream-addr=%p, stream-name=\"%s\"", stream, |
| 1420 | bt_ctf_stream_get_name(stream)); |
| 1421 | goto end; |
| 1422 | } |
| 1423 | |
| 1424 | packet_context = stream->packet_context; |
| 1425 | if (packet_context) { |
| 1426 | bt_get(packet_context); |
| 1427 | } |
| 1428 | end: |
| 1429 | return packet_context; |
| 1430 | } |
| 1431 | |
| 1432 | int bt_ctf_stream_set_packet_context(struct bt_ctf_stream *stream, |
| 1433 | struct bt_ctf_field *field) |
| 1434 | { |
| 1435 | int ret = 0; |
| 1436 | struct bt_ctf_field_type *field_type; |
| 1437 | |
| 1438 | if (!stream) { |
| 1439 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1440 | ret = -1; |
| 1441 | goto end; |
| 1442 | } |
| 1443 | |
| 1444 | if (stream->pos.fd < 0) { |
| 1445 | BT_LOGW_STR("Invalid parameter: stream is not a CTF writer stream."); |
| 1446 | ret = -1; |
| 1447 | goto end; |
| 1448 | } |
| 1449 | |
| 1450 | field_type = bt_ctf_field_get_type(field); |
| 1451 | if (bt_field_type_common_compare((void *) field_type, |
| 1452 | stream->common.stream_class->packet_context_field_type)) { |
| 1453 | BT_LOGW("Invalid parameter: packet context's field type is different from the stream's packet context field type: " |
| 1454 | "stream-addr=%p, stream-name=\"%s\", " |
| 1455 | "packet-context-field-addr=%p, " |
| 1456 | "packet-context-ft-addr=%p", |
| 1457 | stream, bt_ctf_stream_get_name(stream), |
| 1458 | field, field_type); |
| 1459 | ret = -1; |
| 1460 | goto end; |
| 1461 | } |
| 1462 | |
| 1463 | bt_put(field_type); |
| 1464 | bt_put(stream->packet_context); |
| 1465 | stream->packet_context = bt_get(field); |
| 1466 | BT_LOGV("Set stream's packet context field: " |
| 1467 | "stream-addr=%p, stream-name=\"%s\", " |
| 1468 | "packet-context-field-addr=%p", |
| 1469 | stream, bt_ctf_stream_get_name(stream), field); |
| 1470 | end: |
| 1471 | return ret; |
| 1472 | } |
| 1473 | |
| 1474 | struct bt_ctf_field *bt_ctf_stream_get_packet_header(struct bt_ctf_stream *stream) |
| 1475 | { |
| 1476 | struct bt_ctf_field *packet_header = NULL; |
| 1477 | |
| 1478 | if (!stream) { |
| 1479 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1480 | goto end; |
| 1481 | } |
| 1482 | |
| 1483 | if (stream->pos.fd < 0) { |
| 1484 | BT_LOGW("Invalid parameter: stream is not a CTF writer stream: " |
| 1485 | "stream-addr=%p, stream-name=\"%s\"", stream, |
| 1486 | bt_ctf_stream_get_name(stream)); |
| 1487 | goto end; |
| 1488 | } |
| 1489 | |
| 1490 | packet_header = stream->packet_header; |
| 1491 | if (packet_header) { |
| 1492 | bt_get(packet_header); |
| 1493 | } |
| 1494 | end: |
| 1495 | return packet_header; |
| 1496 | } |
| 1497 | |
| 1498 | int bt_ctf_stream_set_packet_header(struct bt_ctf_stream *stream, |
| 1499 | struct bt_ctf_field *field) |
| 1500 | { |
| 1501 | int ret = 0; |
| 1502 | struct bt_ctf_trace *trace = NULL; |
| 1503 | struct bt_ctf_field_type *field_type = NULL; |
| 1504 | |
| 1505 | if (!stream) { |
| 1506 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1507 | ret = -1; |
| 1508 | goto end; |
| 1509 | } |
| 1510 | |
| 1511 | if (stream->pos.fd < 0) { |
| 1512 | BT_LOGW_STR("Invalid parameter: stream is not a CTF writer stream."); |
| 1513 | ret = -1; |
| 1514 | goto end; |
| 1515 | } |
| 1516 | |
| 1517 | trace = (struct bt_ctf_trace *) |
| 1518 | bt_object_get_parent(&stream->common.base); |
| 1519 | |
| 1520 | if (!field) { |
| 1521 | if (trace->common.packet_header_field_type) { |
| 1522 | BT_LOGW("Invalid parameter: setting no packet header but packet header field type is not NULL: " |
| 1523 | "stream-addr=%p, stream-name=\"%s\", " |
| 1524 | "packet-header-field-addr=%p, " |
| 1525 | "expected-ft-addr=%p", |
| 1526 | stream, bt_ctf_stream_get_name(stream), |
| 1527 | field, trace->common.packet_header_field_type); |
| 1528 | ret = -1; |
| 1529 | goto end; |
| 1530 | } |
| 1531 | |
| 1532 | goto skip_validation; |
| 1533 | } |
| 1534 | |
| 1535 | field_type = bt_ctf_field_get_type(field); |
| 1536 | BT_ASSERT(field_type); |
| 1537 | |
| 1538 | if (bt_field_type_common_compare((void *) field_type, |
| 1539 | trace->common.packet_header_field_type)) { |
| 1540 | BT_LOGW("Invalid parameter: packet header's field type is different from the stream's packet header field type: " |
| 1541 | "stream-addr=%p, stream-name=\"%s\", " |
| 1542 | "packet-header-field-addr=%p, " |
| 1543 | "packet-header-ft-addr=%p", |
| 1544 | stream, bt_ctf_stream_get_name(stream), |
| 1545 | field, field_type); |
| 1546 | ret = -1; |
| 1547 | goto end; |
| 1548 | } |
| 1549 | |
| 1550 | skip_validation: |
| 1551 | bt_put(stream->packet_header); |
| 1552 | stream->packet_header = bt_get(field); |
| 1553 | BT_LOGV("Set stream's packet header field: " |
| 1554 | "stream-addr=%p, stream-name=\"%s\", " |
| 1555 | "packet-header-field-addr=%p", |
| 1556 | stream, bt_ctf_stream_get_name(stream), field); |
| 1557 | end: |
| 1558 | BT_PUT(trace); |
| 1559 | bt_put(field_type); |
| 1560 | return ret; |
| 1561 | } |
| 1562 | |
| 1563 | static |
| 1564 | void reset_structure_field(struct bt_ctf_field *structure, const char *name) |
| 1565 | { |
| 1566 | struct bt_ctf_field *member; |
| 1567 | |
| 1568 | member = bt_ctf_field_structure_get_field_by_name(structure, name); |
| 1569 | if (member) { |
| 1570 | bt_field_common_reset_recursive((void *) member); |
| 1571 | bt_put(member); |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | int bt_ctf_stream_flush(struct bt_ctf_stream *stream) |
| 1576 | { |
| 1577 | int ret = 0; |
| 1578 | size_t i; |
| 1579 | struct bt_ctf_stream_pos packet_context_pos; |
| 1580 | struct bt_ctf_trace *trace; |
| 1581 | enum bt_ctf_byte_order native_byte_order; |
| 1582 | bool has_packet_size = false; |
| 1583 | |
| 1584 | if (!stream) { |
| 1585 | BT_LOGW_STR("Invalid parameter: stream is NULL."); |
| 1586 | ret = -1; |
| 1587 | goto end_no_stream; |
| 1588 | } |
| 1589 | |
| 1590 | if (stream->pos.fd < 0) { |
| 1591 | BT_LOGW_STR("Invalid parameter: stream is not a CTF writer stream."); |
| 1592 | ret = -1; |
| 1593 | goto end; |
| 1594 | } |
| 1595 | |
| 1596 | if (stream->packet_context) { |
| 1597 | struct bt_ctf_field *packet_size_field; |
| 1598 | |
| 1599 | packet_size_field = bt_ctf_field_structure_get_field_by_name( |
| 1600 | stream->packet_context, "packet_size"); |
| 1601 | has_packet_size = (packet_size_field != NULL); |
| 1602 | bt_put(packet_size_field); |
| 1603 | } |
| 1604 | |
| 1605 | if (stream->flushed_packet_count == 1) { |
| 1606 | if (!stream->packet_context) { |
| 1607 | BT_LOGW_STR("Cannot flush a stream which has no packet context field more than once."); |
| 1608 | ret = -1; |
| 1609 | goto end; |
| 1610 | } |
| 1611 | |
| 1612 | if (!has_packet_size) { |
| 1613 | BT_LOGW_STR("Cannot flush a stream which has no packet context's `packet_size` field more than once."); |
| 1614 | ret = -1; |
| 1615 | goto end; |
| 1616 | } |
| 1617 | } |
| 1618 | |
| 1619 | BT_LOGV("Flushing stream's current packet: stream-addr=%p, " |
| 1620 | "stream-name=\"%s\", packet-index=%u", stream, |
| 1621 | bt_ctf_stream_get_name(stream), stream->flushed_packet_count); |
| 1622 | trace = BT_FROM_COMMON(bt_stream_class_common_borrow_trace( |
| 1623 | stream->common.stream_class)); |
| 1624 | BT_ASSERT(trace); |
| 1625 | native_byte_order = bt_ctf_trace_get_native_byte_order(trace); |
| 1626 | |
| 1627 | ret = auto_populate_packet_header(stream); |
| 1628 | if (ret) { |
| 1629 | BT_LOGW_STR("Cannot automatically populate the stream's packet header field."); |
| 1630 | ret = -1; |
| 1631 | goto end; |
| 1632 | } |
| 1633 | |
| 1634 | ret = auto_populate_packet_context(stream, true); |
| 1635 | if (ret) { |
| 1636 | BT_LOGW_STR("Cannot automatically populate the stream's packet context field."); |
| 1637 | ret = -1; |
| 1638 | goto end; |
| 1639 | } |
| 1640 | |
| 1641 | /* mmap the next packet */ |
| 1642 | BT_LOGV("Seeking to the next packet: pos-offset=%" PRId64, |
| 1643 | stream->pos.offset); |
| 1644 | bt_ctf_stream_pos_packet_seek(&stream->pos, 0, SEEK_CUR); |
| 1645 | BT_ASSERT(stream->pos.packet_size % 8 == 0); |
| 1646 | |
| 1647 | if (stream->packet_header) { |
| 1648 | BT_LOGV_STR("Serializing packet header field."); |
| 1649 | ret = bt_ctf_field_serialize_recursive(stream->packet_header, |
| 1650 | &stream->pos, native_byte_order); |
| 1651 | if (ret) { |
| 1652 | BT_LOGW("Cannot serialize stream's packet header field: " |
| 1653 | "field-addr=%p", stream->packet_header); |
| 1654 | goto end; |
| 1655 | } |
| 1656 | } |
| 1657 | |
| 1658 | if (stream->packet_context) { |
| 1659 | /* Write packet context */ |
| 1660 | memcpy(&packet_context_pos, &stream->pos, |
| 1661 | sizeof(packet_context_pos)); |
| 1662 | BT_LOGV_STR("Serializing packet context field."); |
| 1663 | ret = bt_ctf_field_serialize_recursive(stream->packet_context, |
| 1664 | &stream->pos, native_byte_order); |
| 1665 | if (ret) { |
| 1666 | BT_LOGW("Cannot serialize stream's packet context field: " |
| 1667 | "field-addr=%p", stream->packet_context); |
| 1668 | goto end; |
| 1669 | } |
| 1670 | } |
| 1671 | |
| 1672 | BT_LOGV("Serializing events: count=%u", stream->events->len); |
| 1673 | |
| 1674 | for (i = 0; i < stream->events->len; i++) { |
| 1675 | struct bt_ctf_event *event = g_ptr_array_index( |
| 1676 | stream->events, i); |
| 1677 | struct bt_ctf_event_class *event_class = |
| 1678 | BT_FROM_COMMON(bt_event_common_borrow_class( |
| 1679 | BT_TO_COMMON(event))); |
| 1680 | |
| 1681 | BT_LOGV("Serializing event: index=%zu, event-addr=%p, " |
| 1682 | "event-class-name=\"%s\", event-class-id=%" PRId64 ", " |
| 1683 | "pos-offset=%" PRId64 ", packet-size=%" PRIu64, |
| 1684 | i, event, bt_ctf_event_class_get_name(event_class), |
| 1685 | bt_ctf_event_class_get_id(event_class), |
| 1686 | stream->pos.offset, stream->pos.packet_size); |
| 1687 | |
| 1688 | /* Write event header */ |
| 1689 | if (event->common.header_field) { |
| 1690 | BT_LOGV_STR("Serializing event's header field."); |
| 1691 | ret = bt_ctf_field_serialize_recursive( |
| 1692 | (void *) event->common.header_field->field, |
| 1693 | &stream->pos, native_byte_order); |
| 1694 | if (ret) { |
| 1695 | BT_LOGW("Cannot serialize event's header field: " |
| 1696 | "field-addr=%p", |
| 1697 | event->common.header_field->field); |
| 1698 | goto end; |
| 1699 | } |
| 1700 | } |
| 1701 | |
| 1702 | /* Write stream event context */ |
| 1703 | if (event->common.stream_event_context_field) { |
| 1704 | BT_LOGV_STR("Serializing event's stream event context field."); |
| 1705 | ret = bt_ctf_field_serialize_recursive( |
| 1706 | (void *) event->common.stream_event_context_field, |
| 1707 | &stream->pos, native_byte_order); |
| 1708 | if (ret) { |
| 1709 | BT_LOGW("Cannot serialize event's stream event context field: " |
| 1710 | "field-addr=%p", |
| 1711 | event->common.stream_event_context_field); |
| 1712 | goto end; |
| 1713 | } |
| 1714 | } |
| 1715 | |
| 1716 | /* Write event content */ |
| 1717 | ret = bt_ctf_event_serialize(event, |
| 1718 | &stream->pos, native_byte_order); |
| 1719 | if (ret) { |
| 1720 | /* bt_ctf_event_serialize() logs errors */ |
| 1721 | goto end; |
| 1722 | } |
| 1723 | } |
| 1724 | |
| 1725 | if (!has_packet_size && stream->pos.offset % 8 != 0) { |
| 1726 | BT_LOGW("Stream's packet context field type has no `packet_size` field, " |
| 1727 | "but current content size is not a multiple of 8 bits: " |
| 1728 | "content-size=%" PRId64 ", " |
| 1729 | "packet-size=%" PRIu64, |
| 1730 | stream->pos.offset, |
| 1731 | stream->pos.packet_size); |
| 1732 | ret = -1; |
| 1733 | goto end; |
| 1734 | } |
| 1735 | |
| 1736 | BT_ASSERT(stream->pos.packet_size % 8 == 0); |
| 1737 | |
| 1738 | /* |
| 1739 | * Remove extra padding bytes. |
| 1740 | */ |
| 1741 | stream->pos.packet_size = (stream->pos.offset + 7) & ~7; |
| 1742 | |
| 1743 | if (stream->packet_context) { |
| 1744 | /* |
| 1745 | * The whole packet is serialized at this point. Make sure that, |
| 1746 | * if `packet_size` is missing, the current content size is |
| 1747 | * equal to the current packet size. |
| 1748 | */ |
| 1749 | struct bt_ctf_field *field = bt_ctf_field_structure_get_field_by_name( |
| 1750 | stream->packet_context, "content_size"); |
| 1751 | |
| 1752 | bt_put(field); |
| 1753 | if (!field) { |
| 1754 | if (stream->pos.offset != stream->pos.packet_size) { |
| 1755 | BT_LOGW("Stream's packet context's `content_size` field is missing, " |
| 1756 | "but current packet's content size is not equal to its packet size: " |
| 1757 | "content-size=%" PRId64 ", " |
| 1758 | "packet-size=%" PRIu64, |
| 1759 | stream->pos.offset, |
| 1760 | stream->pos.packet_size); |
| 1761 | ret = -1; |
| 1762 | goto end; |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | /* |
| 1767 | * Overwrite the packet context now that the stream |
| 1768 | * position's packet and content sizes have the correct |
| 1769 | * values. |
| 1770 | * |
| 1771 | * Copy base_mma as the packet may have been remapped |
| 1772 | * (e.g. when a packet is resized). |
| 1773 | */ |
| 1774 | packet_context_pos.base_mma = stream->pos.base_mma; |
| 1775 | ret = auto_populate_packet_context(stream, false); |
| 1776 | if (ret) { |
| 1777 | BT_LOGW_STR("Cannot automatically populate the stream's packet context field."); |
| 1778 | ret = -1; |
| 1779 | goto end; |
| 1780 | } |
| 1781 | |
| 1782 | BT_LOGV("Rewriting (serializing) packet context field."); |
| 1783 | ret = bt_ctf_field_serialize_recursive(stream->packet_context, |
| 1784 | &packet_context_pos, native_byte_order); |
| 1785 | if (ret) { |
| 1786 | BT_LOGW("Cannot serialize stream's packet context field: " |
| 1787 | "field-addr=%p", stream->packet_context); |
| 1788 | goto end; |
| 1789 | } |
| 1790 | } |
| 1791 | |
| 1792 | g_ptr_array_set_size(stream->events, 0); |
| 1793 | stream->flushed_packet_count++; |
| 1794 | stream->size += stream->pos.packet_size / CHAR_BIT; |
| 1795 | |
| 1796 | end: |
| 1797 | /* Reset automatically-set fields. */ |
| 1798 | if (stream->packet_context) { |
| 1799 | reset_structure_field(stream->packet_context, "timestamp_begin"); |
| 1800 | reset_structure_field(stream->packet_context, "timestamp_end"); |
| 1801 | reset_structure_field(stream->packet_context, "packet_size"); |
| 1802 | reset_structure_field(stream->packet_context, "content_size"); |
| 1803 | reset_structure_field(stream->packet_context, "events_discarded"); |
| 1804 | } |
| 1805 | |
| 1806 | if (ret < 0) { |
| 1807 | /* |
| 1808 | * We failed to write the packet. Its size is therefore set to 0 |
| 1809 | * to ensure the next mapping is done in the same place rather |
| 1810 | * than advancing by "stream->pos.packet_size", which would |
| 1811 | * leave a corrupted packet in the trace. |
| 1812 | */ |
| 1813 | stream->pos.packet_size = 0; |
| 1814 | } else { |
| 1815 | BT_LOGV("Flushed stream's current packet: content-size=%" PRId64 ", " |
| 1816 | "packet-size=%" PRIu64, |
| 1817 | stream->pos.offset, stream->pos.packet_size); |
| 1818 | } |
| 1819 | |
| 1820 | end_no_stream: |
| 1821 | return ret; |
| 1822 | } |
| 1823 | |
| 1824 | static |
| 1825 | void bt_ctf_stream_destroy(struct bt_object *obj) |
| 1826 | { |
| 1827 | struct bt_ctf_stream *stream = (void *) obj; |
| 1828 | |
| 1829 | BT_LOGD("Destroying CTF writer stream object: addr=%p, name=\"%s\"", |
| 1830 | stream, bt_ctf_stream_get_name(stream)); |
| 1831 | |
| 1832 | bt_stream_common_finalize(BT_TO_COMMON(stream)); |
| 1833 | (void) bt_ctf_stream_pos_fini(&stream->pos); |
| 1834 | |
| 1835 | if (stream->pos.fd >= 0) { |
| 1836 | int ret; |
| 1837 | |
| 1838 | /* |
| 1839 | * Truncate the file's size to the minimum required to fit the |
| 1840 | * last packet as we might have grown it too much on the last |
| 1841 | * mmap. |
| 1842 | */ |
| 1843 | do { |
| 1844 | ret = ftruncate(stream->pos.fd, stream->size); |
| 1845 | } while (ret == -1 && errno == EINTR); |
| 1846 | if (ret) { |
| 1847 | BT_LOGE_ERRNO("Failed to truncate stream file", |
| 1848 | ": ret=%d, size=%" PRIu64, |
| 1849 | ret, (uint64_t) stream->size); |
| 1850 | } |
| 1851 | |
| 1852 | if (close(stream->pos.fd)) { |
| 1853 | BT_LOGE_ERRNO("Failed to close stream file", |
| 1854 | ": ret=%d", ret); |
| 1855 | } |
| 1856 | } |
| 1857 | |
| 1858 | if (stream->events) { |
| 1859 | BT_LOGD_STR("Putting events."); |
| 1860 | g_ptr_array_free(stream->events, TRUE); |
| 1861 | } |
| 1862 | |
| 1863 | BT_LOGD_STR("Putting packet header field."); |
| 1864 | bt_put(stream->packet_header); |
| 1865 | BT_LOGD_STR("Putting packet context field."); |
| 1866 | bt_put(stream->packet_context); |
| 1867 | g_free(stream); |
| 1868 | } |
| 1869 | |
| 1870 | static |
| 1871 | int _set_structure_field_integer(struct bt_ctf_field *structure, char *name, |
| 1872 | uint64_t value, bt_bool force) |
| 1873 | { |
| 1874 | int ret = 0; |
| 1875 | struct bt_ctf_field_type *field_type = NULL; |
| 1876 | struct bt_ctf_field *integer; |
| 1877 | |
| 1878 | BT_ASSERT(structure); |
| 1879 | BT_ASSERT(name); |
| 1880 | |
| 1881 | integer = bt_ctf_field_structure_get_field_by_name(structure, name); |
| 1882 | if (!integer) { |
| 1883 | /* Field not found, not an error. */ |
| 1884 | BT_LOGV("Field not found: struct-field-addr=%p, " |
| 1885 | "name=\"%s\", force=%d", structure, name, force); |
| 1886 | goto end; |
| 1887 | } |
| 1888 | |
| 1889 | /* Make sure the payload has not already been set. */ |
| 1890 | if (!force && bt_ctf_field_is_set_recursive(integer)) { |
| 1891 | /* Payload already set, not an error */ |
| 1892 | BT_LOGV("Field's payload is already set: struct-field-addr=%p, " |
| 1893 | "name=\"%s\", force=%d", structure, name, force); |
| 1894 | goto end; |
| 1895 | } |
| 1896 | |
| 1897 | field_type = bt_ctf_field_get_type(integer); |
| 1898 | BT_ASSERT(field_type); |
| 1899 | if (bt_ctf_field_type_get_type_id(field_type) != BT_CTF_FIELD_TYPE_ID_INTEGER) { |
| 1900 | /* |
| 1901 | * The user most likely meant for us to populate this field |
| 1902 | * automatically. However, we can only do this if the field |
| 1903 | * is an integer. Return an error. |
| 1904 | */ |
| 1905 | BT_LOGW("Invalid parameter: field's type is not an integer field type: " |
| 1906 | "field-addr=%p, ft-addr=%p, ft-id=%s", |
| 1907 | integer, field_type, |
| 1908 | bt_common_field_type_id_string((int) |
| 1909 | bt_ctf_field_type_get_type_id(field_type))); |
| 1910 | ret = -1; |
| 1911 | goto end; |
| 1912 | } |
| 1913 | |
| 1914 | if (bt_ctf_field_type_integer_is_signed(field_type)) { |
| 1915 | ret = bt_ctf_field_integer_signed_set_value(integer, |
| 1916 | (int64_t) value); |
| 1917 | } else { |
| 1918 | ret = bt_ctf_field_integer_unsigned_set_value(integer, value); |
| 1919 | } |
| 1920 | ret = !ret ? 1 : ret; |
| 1921 | end: |
| 1922 | bt_put(integer); |
| 1923 | bt_put(field_type); |
| 1924 | return ret; |
| 1925 | } |
| 1926 | |
| 1927 | /* |
| 1928 | * Returns the following codes: |
| 1929 | * 1 if the field was found and set, |
| 1930 | * 0 if nothing was done (field not found, or was already set), |
| 1931 | * <0 if an error was encoutered |
| 1932 | */ |
| 1933 | static |
| 1934 | int try_set_structure_field_integer(struct bt_ctf_field *structure, char *name, |
| 1935 | uint64_t value) |
| 1936 | { |
| 1937 | return _set_structure_field_integer(structure, name, value, BT_FALSE); |
| 1938 | } |
| 1939 | |
| 1940 | struct bt_ctf_stream_class *bt_ctf_stream_get_class( |
| 1941 | struct bt_ctf_stream *stream) |
| 1942 | { |
| 1943 | return bt_get(bt_stream_common_borrow_class(BT_TO_COMMON(stream))); |
| 1944 | } |
| 1945 | |
| 1946 | const char *bt_ctf_stream_get_name(struct bt_ctf_stream *stream) |
| 1947 | { |
| 1948 | return bt_stream_common_get_name(BT_TO_COMMON(stream)); |
| 1949 | } |
| 1950 | |
| 1951 | int64_t bt_ctf_stream_get_id(struct bt_ctf_stream *stream) |
| 1952 | { |
| 1953 | return bt_stream_common_get_id(BT_TO_COMMON(stream)); |
| 1954 | } |