| 1 | /* |
| 2 | * Copyright 2019 Francis Deslauriers <francis.deslauriers@efficios.com> |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to deal |
| 6 | * in the Software without restriction, including without limitation the rights |
| 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | * copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 20 | * SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <babeltrace2/babeltrace.h> |
| 24 | |
| 25 | #include <inttypes.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <string.h> |
| 28 | |
| 29 | #include "common/assert.h" |
| 30 | #include "common/common.h" |
| 31 | #include "common/macros.h" |
| 32 | #include "common/uuid.h" |
| 33 | |
| 34 | #include "muxing.h" |
| 35 | |
| 36 | struct message_to_compare { |
| 37 | const bt_message *msg; |
| 38 | const bt_trace *trace; |
| 39 | const bt_stream *stream; |
| 40 | }; |
| 41 | |
| 42 | struct messages_to_compare { |
| 43 | struct message_to_compare left; |
| 44 | struct message_to_compare right; |
| 45 | }; |
| 46 | |
| 47 | static |
| 48 | int message_type_weight(const bt_message_type msg_type) |
| 49 | { |
| 50 | int weight; |
| 51 | |
| 52 | switch (msg_type) { |
| 53 | case BT_MESSAGE_TYPE_STREAM_BEGINNING: |
| 54 | weight = 7; |
| 55 | break; |
| 56 | case BT_MESSAGE_TYPE_PACKET_BEGINNING: |
| 57 | weight = 6; |
| 58 | break; |
| 59 | case BT_MESSAGE_TYPE_EVENT: |
| 60 | weight = 5; |
| 61 | break; |
| 62 | case BT_MESSAGE_TYPE_DISCARDED_EVENTS: |
| 63 | weight = 4; |
| 64 | break; |
| 65 | case BT_MESSAGE_TYPE_PACKET_END: |
| 66 | weight = 3; |
| 67 | break; |
| 68 | case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY: |
| 69 | weight = 2; |
| 70 | break; |
| 71 | case BT_MESSAGE_TYPE_DISCARDED_PACKETS: |
| 72 | weight = 1; |
| 73 | break; |
| 74 | case BT_MESSAGE_TYPE_STREAM_END: |
| 75 | weight = 0; |
| 76 | break; |
| 77 | default: |
| 78 | bt_common_abort(); |
| 79 | } |
| 80 | |
| 81 | return weight; |
| 82 | } |
| 83 | |
| 84 | /* |
| 85 | * Compare 2 messages to order them in a determinitic way based on their |
| 86 | * types. |
| 87 | * Returns -1 is left mesage must go first |
| 88 | * Returns 1 is right mesage must go first |
| 89 | */ |
| 90 | static |
| 91 | int compare_messages_by_type(struct messages_to_compare *msgs) |
| 92 | { |
| 93 | bt_message_type left_msg_type = bt_message_get_type(msgs->left.msg); |
| 94 | bt_message_type right_msg_type = bt_message_get_type(msgs->right.msg); |
| 95 | |
| 96 | return message_type_weight(right_msg_type) - |
| 97 | message_type_weight(left_msg_type); |
| 98 | } |
| 99 | |
| 100 | static |
| 101 | int compare_events(const bt_event *left_event, const bt_event *right_event) |
| 102 | { |
| 103 | int ret = 0; |
| 104 | const bt_event_class *left_event_class, *right_event_class; |
| 105 | uint64_t left_event_class_id, right_event_class_id; |
| 106 | const char *left_event_class_name, *right_event_class_name, |
| 107 | *left_event_class_emf_uri, *right_event_class_emf_uri; |
| 108 | bt_event_class_log_level left_event_class_log_level, right_event_class_log_level; |
| 109 | bt_property_availability left_log_level_avail, right_log_level_avail; |
| 110 | |
| 111 | left_event_class = bt_event_borrow_class_const(left_event); |
| 112 | right_event_class = bt_event_borrow_class_const(right_event); |
| 113 | |
| 114 | left_event_class_id = bt_event_class_get_id(left_event_class); |
| 115 | right_event_class_id = bt_event_class_get_id(right_event_class); |
| 116 | |
| 117 | if (left_event_class_id > right_event_class_id) { |
| 118 | ret = 1; |
| 119 | goto end; |
| 120 | } else if (left_event_class_id < right_event_class_id) { |
| 121 | ret = -1; |
| 122 | goto end; |
| 123 | } |
| 124 | |
| 125 | left_event_class_name = bt_event_class_get_name(left_event_class); |
| 126 | right_event_class_name = bt_event_class_get_name(right_event_class); |
| 127 | if (left_event_class_name && right_event_class_name) { |
| 128 | ret = strcmp(left_event_class_name, right_event_class_name); |
| 129 | if (ret != 0) { |
| 130 | goto end; |
| 131 | } |
| 132 | } else if (!left_event_class_name && right_event_class_name) { |
| 133 | ret = -1; |
| 134 | goto end; |
| 135 | } else if (left_event_class_name && !right_event_class_name) { |
| 136 | ret = 1; |
| 137 | goto end; |
| 138 | } |
| 139 | |
| 140 | left_log_level_avail = bt_event_class_get_log_level(left_event_class, |
| 141 | &left_event_class_log_level); |
| 142 | right_log_level_avail = bt_event_class_get_log_level(right_event_class, |
| 143 | &right_event_class_log_level); |
| 144 | |
| 145 | if (left_log_level_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 146 | right_log_level_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 147 | ret = left_event_class_log_level - right_event_class_log_level; |
| 148 | if (ret) { |
| 149 | goto end; |
| 150 | } |
| 151 | } else if (left_log_level_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 152 | right_log_level_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) { |
| 153 | ret = -1; |
| 154 | goto end; |
| 155 | } else if (left_log_level_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE && |
| 156 | right_log_level_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 157 | ret = 1; |
| 158 | goto end; |
| 159 | } |
| 160 | |
| 161 | left_event_class_emf_uri = bt_event_class_get_emf_uri(left_event_class); |
| 162 | right_event_class_emf_uri = bt_event_class_get_emf_uri(right_event_class); |
| 163 | if (left_event_class_emf_uri && right_event_class_emf_uri) { |
| 164 | ret = strcmp(left_event_class_emf_uri, right_event_class_emf_uri); |
| 165 | if (ret != 0) { |
| 166 | goto end; |
| 167 | } |
| 168 | } else if (!left_event_class_emf_uri && right_event_class_emf_uri) { |
| 169 | ret = -1; |
| 170 | goto end; |
| 171 | } else if (left_event_class_emf_uri && !right_event_class_emf_uri) { |
| 172 | ret = 1; |
| 173 | goto end; |
| 174 | } |
| 175 | |
| 176 | end: |
| 177 | return ret; |
| 178 | } |
| 179 | |
| 180 | static |
| 181 | int compare_streams(const bt_stream *left_stream, const bt_stream *right_stream) |
| 182 | { |
| 183 | int ret = 0; |
| 184 | const char *left_stream_name, *right_stream_name, |
| 185 | *left_stream_class_name, *right_stream_class_name; |
| 186 | const bt_stream_class *left_stream_class, *right_stream_class; |
| 187 | |
| 188 | /* |
| 189 | * No need to compare stream id as it was checked earlier and if we are |
| 190 | * here it means they are identical or both absent. |
| 191 | */ |
| 192 | BT_ASSERT(bt_stream_get_id(left_stream) == |
| 193 | bt_stream_get_id(right_stream)); |
| 194 | |
| 195 | /* Compare stream name. */ |
| 196 | left_stream_name = bt_stream_get_name(left_stream); |
| 197 | right_stream_name = bt_stream_get_name(right_stream); |
| 198 | |
| 199 | if (left_stream_name && right_stream_name) { |
| 200 | ret = strcmp(left_stream_name, right_stream_name); |
| 201 | if (ret != 0) { |
| 202 | goto end; |
| 203 | } |
| 204 | } else if (!left_stream_name && right_stream_name) { |
| 205 | ret = -1; |
| 206 | goto end; |
| 207 | } else if (left_stream_name && !right_stream_name) { |
| 208 | ret = 1; |
| 209 | goto end; |
| 210 | } |
| 211 | |
| 212 | left_stream_class = bt_stream_borrow_class_const(left_stream); |
| 213 | right_stream_class = bt_stream_borrow_class_const(right_stream); |
| 214 | |
| 215 | /* |
| 216 | * No need to compare stream class id as it was checked earlier and if |
| 217 | * we are here it means they are identical. |
| 218 | */ |
| 219 | BT_ASSERT(bt_stream_class_get_id(left_stream_class) == |
| 220 | bt_stream_class_get_id(right_stream_class)); |
| 221 | |
| 222 | /* Compare stream class name. */ |
| 223 | left_stream_class_name = bt_stream_class_get_name(left_stream_class); |
| 224 | right_stream_class_name = bt_stream_class_get_name(right_stream_class); |
| 225 | |
| 226 | if (left_stream_class_name && right_stream_class_name) { |
| 227 | ret = strcmp(left_stream_class_name, right_stream_class_name); |
| 228 | if (ret != 0) { |
| 229 | goto end; |
| 230 | } |
| 231 | } else if (!left_stream_class_name && right_stream_class_name) { |
| 232 | ret = -1; |
| 233 | goto end; |
| 234 | } else if (left_stream_class_name && !right_stream_class_name) { |
| 235 | ret = 1; |
| 236 | goto end; |
| 237 | } |
| 238 | |
| 239 | /* Compare stream class automatic event class id assignment. */ |
| 240 | if (bt_stream_class_assigns_automatic_event_class_id(left_stream_class) && |
| 241 | !bt_stream_class_assigns_automatic_event_class_id(right_stream_class)) { |
| 242 | ret = 1; |
| 243 | goto end; |
| 244 | } else if (!bt_stream_class_assigns_automatic_event_class_id(left_stream_class) && |
| 245 | bt_stream_class_assigns_automatic_event_class_id(right_stream_class)) { |
| 246 | ret = -1; |
| 247 | goto end; |
| 248 | } |
| 249 | |
| 250 | /* Compare stream class automatic stream id assignment. */ |
| 251 | if (bt_stream_class_assigns_automatic_stream_id(left_stream_class) && |
| 252 | !bt_stream_class_assigns_automatic_stream_id(right_stream_class)) { |
| 253 | ret = 1; |
| 254 | goto end; |
| 255 | } else if (!bt_stream_class_assigns_automatic_stream_id(left_stream_class) && |
| 256 | bt_stream_class_assigns_automatic_stream_id(right_stream_class)) { |
| 257 | ret = -1; |
| 258 | goto end; |
| 259 | } |
| 260 | |
| 261 | /* Compare stream class support of discarded events. */ |
| 262 | if (bt_stream_class_supports_discarded_events(left_stream_class) && |
| 263 | !bt_stream_class_supports_discarded_events(right_stream_class)) { |
| 264 | ret = 1; |
| 265 | goto end; |
| 266 | } else if (!bt_stream_class_supports_discarded_events(left_stream_class) && |
| 267 | bt_stream_class_supports_discarded_events(right_stream_class)) { |
| 268 | ret = -1; |
| 269 | goto end; |
| 270 | } |
| 271 | |
| 272 | /* Compare stream class discarded events default clock snapshot. */ |
| 273 | if (bt_stream_class_discarded_events_have_default_clock_snapshots(left_stream_class) && |
| 274 | !bt_stream_class_discarded_events_have_default_clock_snapshots(right_stream_class)) { |
| 275 | ret = 1; |
| 276 | goto end; |
| 277 | } else if (!bt_stream_class_discarded_events_have_default_clock_snapshots(left_stream_class) && |
| 278 | bt_stream_class_discarded_events_have_default_clock_snapshots(right_stream_class)) { |
| 279 | ret = -1; |
| 280 | goto end; |
| 281 | } |
| 282 | |
| 283 | /* Compare stream class support of packets. */ |
| 284 | if (bt_stream_class_supports_packets(left_stream_class) && |
| 285 | !bt_stream_class_supports_packets(right_stream_class)) { |
| 286 | ret = 1; |
| 287 | goto end; |
| 288 | } else if (!bt_stream_class_supports_packets(left_stream_class) && |
| 289 | bt_stream_class_supports_packets(right_stream_class)) { |
| 290 | ret = -1; |
| 291 | goto end; |
| 292 | } |
| 293 | |
| 294 | if (!bt_stream_class_supports_packets(left_stream_class)) { |
| 295 | /* Skip all packet related checks. */ |
| 296 | goto end; |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Compare stream class presence of discarded packets beginning default |
| 301 | * clock snapshot. |
| 302 | */ |
| 303 | if (bt_stream_class_packets_have_beginning_default_clock_snapshot(left_stream_class) && |
| 304 | !bt_stream_class_packets_have_beginning_default_clock_snapshot(right_stream_class)) { |
| 305 | ret = 1; |
| 306 | goto end; |
| 307 | } else if (!bt_stream_class_packets_have_beginning_default_clock_snapshot(left_stream_class) && |
| 308 | bt_stream_class_packets_have_beginning_default_clock_snapshot(right_stream_class)) { |
| 309 | ret = -1; |
| 310 | goto end; |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * Compare stream class presence of discarded packets end default clock |
| 315 | * snapshot. |
| 316 | */ |
| 317 | if (bt_stream_class_packets_have_end_default_clock_snapshot(left_stream_class) && |
| 318 | !bt_stream_class_packets_have_end_default_clock_snapshot(right_stream_class)) { |
| 319 | ret = 1; |
| 320 | goto end; |
| 321 | } else if (!bt_stream_class_packets_have_end_default_clock_snapshot(left_stream_class) && |
| 322 | bt_stream_class_packets_have_end_default_clock_snapshot(right_stream_class)) { |
| 323 | ret = -1; |
| 324 | goto end; |
| 325 | } |
| 326 | |
| 327 | /* Compare stream class support of discarded packets. */ |
| 328 | if (bt_stream_class_supports_discarded_packets(left_stream_class) && |
| 329 | !bt_stream_class_supports_discarded_packets(right_stream_class)) { |
| 330 | ret = 1; |
| 331 | goto end; |
| 332 | } else if (!bt_stream_class_supports_discarded_packets(left_stream_class) && |
| 333 | bt_stream_class_supports_discarded_packets(right_stream_class)) { |
| 334 | ret = -1; |
| 335 | goto end; |
| 336 | } |
| 337 | |
| 338 | /* Compare stream class discarded packets default clock snapshot. */ |
| 339 | if (bt_stream_class_discarded_packets_have_default_clock_snapshots(left_stream_class) && |
| 340 | !bt_stream_class_discarded_packets_have_default_clock_snapshots(right_stream_class)) { |
| 341 | ret = 1; |
| 342 | goto end; |
| 343 | } else if (!bt_stream_class_discarded_packets_have_default_clock_snapshots(left_stream_class) && |
| 344 | bt_stream_class_discarded_packets_have_default_clock_snapshots(right_stream_class)) { |
| 345 | ret = -1; |
| 346 | goto end; |
| 347 | } |
| 348 | |
| 349 | end: |
| 350 | return ret; |
| 351 | } |
| 352 | |
| 353 | static |
| 354 | int compare_clock_snapshots_and_clock_classes(const bt_clock_snapshot *left_cs, |
| 355 | const bt_clock_snapshot *right_cs) |
| 356 | { |
| 357 | int ret; |
| 358 | uint64_t left_freq, right_freq, left_prec, right_prec; |
| 359 | uint64_t left_cs_value, right_cs_value; |
| 360 | const bt_clock_class *left_clock_class, *right_clock_class; |
| 361 | const char *left_clock_class_name, *right_clock_class_name; |
| 362 | left_cs_value = bt_clock_snapshot_get_value(left_cs); |
| 363 | right_cs_value = bt_clock_snapshot_get_value(right_cs); |
| 364 | bt_uuid left_clock_class_uuid, right_clock_class_uuid; |
| 365 | |
| 366 | ret = left_cs_value - right_cs_value; |
| 367 | if (ret != 0) { |
| 368 | goto end; |
| 369 | } |
| 370 | |
| 371 | left_clock_class = bt_clock_snapshot_borrow_clock_class_const(left_cs); |
| 372 | right_clock_class = bt_clock_snapshot_borrow_clock_class_const(right_cs); |
| 373 | |
| 374 | left_clock_class_uuid = bt_clock_class_get_uuid(left_clock_class); |
| 375 | right_clock_class_uuid = bt_clock_class_get_uuid(right_clock_class); |
| 376 | |
| 377 | if (left_clock_class_uuid && !right_clock_class_uuid) { |
| 378 | ret = -1; |
| 379 | goto end; |
| 380 | } else if (!left_clock_class_uuid && right_clock_class_uuid) { |
| 381 | ret = 1; |
| 382 | goto end; |
| 383 | } else if (left_clock_class_uuid && right_clock_class_uuid) { |
| 384 | ret = bt_uuid_compare(left_clock_class_uuid, |
| 385 | right_clock_class_uuid); |
| 386 | if (ret != 0) { |
| 387 | goto end; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | |
| 392 | left_clock_class_name = bt_clock_class_get_name(left_clock_class); |
| 393 | right_clock_class_name = bt_clock_class_get_name(right_clock_class); |
| 394 | |
| 395 | if (left_clock_class_name && !right_clock_class_name) { |
| 396 | ret = -1; |
| 397 | goto end; |
| 398 | } else if (!left_clock_class_name && right_clock_class_name) { |
| 399 | ret = 1; |
| 400 | goto end; |
| 401 | } else if (left_clock_class_name && right_clock_class_name) { |
| 402 | ret = strcmp(left_clock_class_name, right_clock_class_name); |
| 403 | if (ret != 0) { |
| 404 | goto end; |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | left_freq = bt_clock_class_get_frequency(left_clock_class); |
| 409 | right_freq = bt_clock_class_get_frequency(right_clock_class); |
| 410 | |
| 411 | ret = right_freq - left_freq; |
| 412 | if (ret != 0) { |
| 413 | goto end; |
| 414 | } |
| 415 | |
| 416 | left_prec = bt_clock_class_get_precision(left_clock_class); |
| 417 | right_prec = bt_clock_class_get_precision(right_clock_class); |
| 418 | |
| 419 | ret = right_prec - left_prec; |
| 420 | if (ret != 0) { |
| 421 | goto end; |
| 422 | } |
| 423 | |
| 424 | end: |
| 425 | return ret; |
| 426 | } |
| 427 | |
| 428 | static |
| 429 | const bt_stream *borrow_stream(const bt_message *msg) |
| 430 | { |
| 431 | bt_message_type msg_type = bt_message_get_type(msg); |
| 432 | const bt_stream *stream = NULL; |
| 433 | const bt_packet *packet = NULL; |
| 434 | const bt_event *event = NULL; |
| 435 | |
| 436 | switch (msg_type) { |
| 437 | case BT_MESSAGE_TYPE_STREAM_BEGINNING: |
| 438 | stream = bt_message_stream_beginning_borrow_stream_const(msg); |
| 439 | break; |
| 440 | case BT_MESSAGE_TYPE_STREAM_END: |
| 441 | stream = bt_message_stream_end_borrow_stream_const(msg); |
| 442 | break; |
| 443 | case BT_MESSAGE_TYPE_PACKET_BEGINNING: |
| 444 | packet = bt_message_packet_beginning_borrow_packet_const(msg); |
| 445 | stream = bt_packet_borrow_stream_const(packet); |
| 446 | break; |
| 447 | case BT_MESSAGE_TYPE_PACKET_END: |
| 448 | packet = bt_message_packet_end_borrow_packet_const(msg); |
| 449 | stream = bt_packet_borrow_stream_const(packet); |
| 450 | break; |
| 451 | case BT_MESSAGE_TYPE_EVENT: |
| 452 | event = bt_message_event_borrow_event_const(msg); |
| 453 | stream = bt_event_borrow_stream_const(event); |
| 454 | break; |
| 455 | case BT_MESSAGE_TYPE_DISCARDED_EVENTS: |
| 456 | stream = bt_message_discarded_events_borrow_stream_const(msg); |
| 457 | break; |
| 458 | case BT_MESSAGE_TYPE_DISCARDED_PACKETS: |
| 459 | stream = bt_message_discarded_packets_borrow_stream_const(msg); |
| 460 | break; |
| 461 | case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY: |
| 462 | goto end; |
| 463 | default: |
| 464 | bt_common_abort(); |
| 465 | } |
| 466 | |
| 467 | end: |
| 468 | return stream; |
| 469 | } |
| 470 | |
| 471 | static |
| 472 | const bt_trace *borrow_trace(const bt_message *msg) |
| 473 | { |
| 474 | const bt_trace *trace = NULL; |
| 475 | const bt_stream *stream = NULL; |
| 476 | |
| 477 | stream = borrow_stream(msg); |
| 478 | if (stream) { |
| 479 | trace = bt_stream_borrow_trace_const(stream); |
| 480 | } |
| 481 | |
| 482 | return trace; |
| 483 | } |
| 484 | |
| 485 | static |
| 486 | int compare_messages_by_trace_name(struct messages_to_compare *msgs) |
| 487 | { |
| 488 | int ret = 0; |
| 489 | const char *left_trace_name = NULL, *right_trace_name = NULL; |
| 490 | |
| 491 | if (msgs->left.trace && !msgs->right.trace) { |
| 492 | ret = -1; |
| 493 | goto end; |
| 494 | } |
| 495 | |
| 496 | if (!msgs->left.trace && msgs->right.trace) { |
| 497 | ret = 1; |
| 498 | goto end; |
| 499 | } |
| 500 | |
| 501 | if (!msgs->left.trace && !msgs->right.trace) { |
| 502 | ret = 0; |
| 503 | goto end; |
| 504 | } |
| 505 | |
| 506 | left_trace_name = bt_trace_get_name(msgs->left.trace); |
| 507 | right_trace_name = bt_trace_get_name(msgs->right.trace); |
| 508 | |
| 509 | if (left_trace_name && !right_trace_name) { |
| 510 | ret = -1; |
| 511 | goto end; |
| 512 | } |
| 513 | |
| 514 | if (!left_trace_name && right_trace_name) { |
| 515 | ret = 1; |
| 516 | goto end; |
| 517 | } |
| 518 | |
| 519 | if (!left_trace_name && !right_trace_name) { |
| 520 | ret = 0; |
| 521 | goto end; |
| 522 | } |
| 523 | |
| 524 | ret = strcmp(left_trace_name, right_trace_name); |
| 525 | end: |
| 526 | return ret; |
| 527 | } |
| 528 | |
| 529 | static |
| 530 | int compare_messages_by_trace_uuid(struct messages_to_compare *msgs) |
| 531 | { |
| 532 | int ret = 0; |
| 533 | bt_uuid left_trace_uuid = NULL, right_trace_uuid = NULL; |
| 534 | |
| 535 | if (msgs->left.trace && !msgs->right.trace) { |
| 536 | ret = -1; |
| 537 | goto end; |
| 538 | } |
| 539 | |
| 540 | if (!msgs->left.trace && msgs->right.trace) { |
| 541 | ret = 1; |
| 542 | goto end; |
| 543 | } |
| 544 | |
| 545 | if (!msgs->left.trace && !msgs->right.trace) { |
| 546 | ret = 0; |
| 547 | goto end; |
| 548 | } |
| 549 | |
| 550 | left_trace_uuid = bt_trace_get_uuid(msgs->left.trace); |
| 551 | right_trace_uuid = bt_trace_get_uuid(msgs->right.trace); |
| 552 | |
| 553 | if (left_trace_uuid && !right_trace_uuid) { |
| 554 | ret = -1; |
| 555 | goto end; |
| 556 | } |
| 557 | |
| 558 | if (!left_trace_uuid && right_trace_uuid) { |
| 559 | ret = 1; |
| 560 | goto end; |
| 561 | } |
| 562 | |
| 563 | if (!left_trace_uuid && !right_trace_uuid) { |
| 564 | ret = 0; |
| 565 | goto end; |
| 566 | } |
| 567 | |
| 568 | ret = bt_uuid_compare(left_trace_uuid, right_trace_uuid); |
| 569 | end: |
| 570 | return ret; |
| 571 | } |
| 572 | |
| 573 | static |
| 574 | int compare_messages_by_stream_class_id(struct messages_to_compare *msgs) |
| 575 | { |
| 576 | int ret = 0; |
| 577 | uint64_t left_stream_class_id = 0, right_stream_class_id = 0; |
| 578 | |
| 579 | if (msgs->left.stream && !msgs->right.stream) { |
| 580 | ret = -1; |
| 581 | goto end; |
| 582 | } |
| 583 | |
| 584 | if (!msgs->left.stream && msgs->right.stream) { |
| 585 | ret = 1; |
| 586 | goto end; |
| 587 | } |
| 588 | |
| 589 | if (!msgs->left.stream && !msgs->right.stream) { |
| 590 | ret = 0; |
| 591 | goto end; |
| 592 | } |
| 593 | |
| 594 | left_stream_class_id = bt_stream_class_get_id( |
| 595 | bt_stream_borrow_class_const(msgs->left.stream)); |
| 596 | |
| 597 | right_stream_class_id = bt_stream_class_get_id( |
| 598 | bt_stream_borrow_class_const(msgs->right.stream)); |
| 599 | |
| 600 | if (left_stream_class_id == right_stream_class_id) { |
| 601 | ret = 0; |
| 602 | goto end; |
| 603 | } |
| 604 | |
| 605 | ret = (left_stream_class_id < right_stream_class_id) ? -1 : 1; |
| 606 | |
| 607 | end: |
| 608 | return ret; |
| 609 | } |
| 610 | |
| 611 | static |
| 612 | int compare_messages_by_stream_id(struct messages_to_compare *msgs) |
| 613 | { |
| 614 | int ret = 0; |
| 615 | uint64_t left_stream_id = 0, right_stream_id = 0; |
| 616 | |
| 617 | if (msgs->left.stream && !msgs->right.stream) { |
| 618 | ret = -1; |
| 619 | goto end; |
| 620 | } |
| 621 | |
| 622 | if (!msgs->left.stream && msgs->right.stream) { |
| 623 | ret = 1; |
| 624 | goto end; |
| 625 | } |
| 626 | |
| 627 | if (!msgs->left.stream && !msgs->right.stream) { |
| 628 | ret = 0; |
| 629 | goto end; |
| 630 | } |
| 631 | |
| 632 | left_stream_id = bt_stream_get_id(msgs->left.stream); |
| 633 | right_stream_id = bt_stream_get_id(msgs->right.stream); |
| 634 | |
| 635 | if (left_stream_id == right_stream_id) { |
| 636 | ret = 0; |
| 637 | goto end; |
| 638 | } |
| 639 | |
| 640 | ret = (left_stream_id < right_stream_id) ? -1 : 1; |
| 641 | |
| 642 | end: |
| 643 | return ret; |
| 644 | } |
| 645 | |
| 646 | static |
| 647 | int compare_messages_same_type(struct messages_to_compare *msgs) |
| 648 | { |
| 649 | int ret = 0; |
| 650 | |
| 651 | /* |
| 652 | * Both messages are of the same type, we must compare characterics of |
| 653 | * the messages such as the attributes of the event in a event message. |
| 654 | */ |
| 655 | BT_ASSERT(bt_message_get_type(msgs->left.msg) == |
| 656 | bt_message_get_type(msgs->right.msg)); |
| 657 | |
| 658 | switch (bt_message_get_type(msgs->left.msg)) { |
| 659 | case BT_MESSAGE_TYPE_STREAM_BEGINNING: |
| 660 | /* Fall-through */ |
| 661 | case BT_MESSAGE_TYPE_STREAM_END: |
| 662 | /* Fall-through */ |
| 663 | case BT_MESSAGE_TYPE_PACKET_BEGINNING: |
| 664 | /* Fall-through */ |
| 665 | case BT_MESSAGE_TYPE_PACKET_END: |
| 666 | ret = compare_streams(msgs->left.stream, msgs->right.stream); |
| 667 | if (ret) { |
| 668 | goto end; |
| 669 | } |
| 670 | |
| 671 | break; |
| 672 | case BT_MESSAGE_TYPE_EVENT: |
| 673 | { |
| 674 | const bt_event *left_event, *right_event; |
| 675 | left_event = bt_message_event_borrow_event_const(msgs->left.msg); |
| 676 | right_event = bt_message_event_borrow_event_const(msgs->right.msg); |
| 677 | |
| 678 | ret = compare_events(left_event, right_event); |
| 679 | if (ret) { |
| 680 | goto end; |
| 681 | } |
| 682 | |
| 683 | ret = compare_streams(msgs->left.stream, msgs->right.stream); |
| 684 | if (ret) { |
| 685 | goto end; |
| 686 | } |
| 687 | break; |
| 688 | } |
| 689 | case BT_MESSAGE_TYPE_DISCARDED_EVENTS: |
| 690 | { |
| 691 | const bt_stream_class *left_stream_class; |
| 692 | bt_property_availability left_event_count_avail, |
| 693 | right_event_count_avail; |
| 694 | uint64_t left_event_count, right_event_count; |
| 695 | |
| 696 | /* |
| 697 | * Compare streams first to check if there is a |
| 698 | * mismatch about discarded event related configuration |
| 699 | * in the stream class. |
| 700 | */ |
| 701 | ret = compare_streams(msgs->left.stream, msgs->right.stream); |
| 702 | if (ret) { |
| 703 | goto end; |
| 704 | } |
| 705 | |
| 706 | left_stream_class = bt_stream_borrow_class_const(msgs->left.stream); |
| 707 | if (bt_stream_class_discarded_events_have_default_clock_snapshots( |
| 708 | left_stream_class)) { |
| 709 | const bt_clock_snapshot *left_beg_cs = |
| 710 | bt_message_discarded_events_borrow_beginning_default_clock_snapshot_const(msgs->left.msg); |
| 711 | const bt_clock_snapshot *right_beg_cs = |
| 712 | bt_message_discarded_events_borrow_beginning_default_clock_snapshot_const(msgs->right.msg); |
| 713 | const bt_clock_snapshot *left_end_cs = |
| 714 | bt_message_discarded_events_borrow_end_default_clock_snapshot_const(msgs->left.msg); |
| 715 | const bt_clock_snapshot *right_end_cs = |
| 716 | bt_message_discarded_events_borrow_end_default_clock_snapshot_const(msgs->right.msg); |
| 717 | |
| 718 | ret = compare_clock_snapshots_and_clock_classes( |
| 719 | left_beg_cs, right_beg_cs); |
| 720 | if (ret) { |
| 721 | goto end; |
| 722 | } |
| 723 | |
| 724 | ret = compare_clock_snapshots_and_clock_classes( |
| 725 | left_end_cs, right_end_cs); |
| 726 | if (ret) { |
| 727 | goto end; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | left_event_count_avail = |
| 732 | bt_message_discarded_events_get_count( |
| 733 | msgs->left.msg, &left_event_count); |
| 734 | right_event_count_avail = |
| 735 | bt_message_discarded_events_get_count( |
| 736 | msgs->right.msg, &right_event_count); |
| 737 | if (left_event_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 738 | right_event_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 739 | ret = left_event_count - right_event_count; |
| 740 | if (ret != 0) { |
| 741 | goto end; |
| 742 | } |
| 743 | } else if (left_event_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 744 | right_event_count_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) { |
| 745 | ret = -1; |
| 746 | goto end; |
| 747 | } else if (left_event_count_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE && |
| 748 | right_event_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 749 | ret = 1; |
| 750 | goto end; |
| 751 | } |
| 752 | |
| 753 | break; |
| 754 | } |
| 755 | case BT_MESSAGE_TYPE_DISCARDED_PACKETS: |
| 756 | { |
| 757 | const bt_stream_class *left_stream_class; |
| 758 | bt_property_availability left_packet_count_avail, |
| 759 | right_packet_count_avail; |
| 760 | uint64_t left_packet_count, right_packet_count; |
| 761 | |
| 762 | /* |
| 763 | * Compare streams first to check if there is a |
| 764 | * mismatch about discarded packets related |
| 765 | * configuration in the stream class. |
| 766 | */ |
| 767 | ret = compare_streams(msgs->left.stream, msgs->right.stream); |
| 768 | if (ret) { |
| 769 | goto end; |
| 770 | } |
| 771 | |
| 772 | left_stream_class = bt_stream_borrow_class_const(msgs->left.stream); |
| 773 | |
| 774 | if (bt_stream_class_discarded_packets_have_default_clock_snapshots( |
| 775 | left_stream_class)) { |
| 776 | const bt_clock_snapshot *left_beg_cs = |
| 777 | bt_message_discarded_packets_borrow_beginning_default_clock_snapshot_const(msgs->left.msg); |
| 778 | const bt_clock_snapshot *right_beg_cs = |
| 779 | bt_message_discarded_packets_borrow_beginning_default_clock_snapshot_const(msgs->right.msg); |
| 780 | const bt_clock_snapshot *left_end_cs = |
| 781 | bt_message_discarded_packets_borrow_end_default_clock_snapshot_const(msgs->left.msg); |
| 782 | const bt_clock_snapshot *right_end_cs = |
| 783 | bt_message_discarded_packets_borrow_end_default_clock_snapshot_const(msgs->right.msg); |
| 784 | |
| 785 | ret = compare_clock_snapshots_and_clock_classes( |
| 786 | left_beg_cs, right_beg_cs); |
| 787 | if (ret) { |
| 788 | goto end; |
| 789 | } |
| 790 | |
| 791 | ret = compare_clock_snapshots_and_clock_classes( |
| 792 | left_end_cs, right_end_cs); |
| 793 | if (ret) { |
| 794 | goto end; |
| 795 | } |
| 796 | } |
| 797 | |
| 798 | left_packet_count_avail = bt_message_discarded_packets_get_count( |
| 799 | msgs->left.msg, &left_packet_count); |
| 800 | right_packet_count_avail = bt_message_discarded_packets_get_count( |
| 801 | msgs->right.msg, &right_packet_count); |
| 802 | if (left_packet_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 803 | right_packet_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 804 | ret = left_packet_count - right_packet_count; |
| 805 | if (ret != 0) { |
| 806 | goto end; |
| 807 | } |
| 808 | } else if (left_packet_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE && |
| 809 | right_packet_count_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE) { |
| 810 | ret = -1; |
| 811 | goto end; |
| 812 | } else if (left_packet_count_avail == BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE && |
| 813 | right_packet_count_avail == BT_PROPERTY_AVAILABILITY_AVAILABLE) { |
| 814 | ret = 1; |
| 815 | goto end; |
| 816 | } |
| 817 | |
| 818 | break; |
| 819 | } |
| 820 | case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY: |
| 821 | { |
| 822 | const bt_clock_snapshot *left_cs = |
| 823 | bt_message_message_iterator_inactivity_borrow_default_clock_snapshot_const(msgs->left.msg); |
| 824 | const bt_clock_snapshot *right_cs = |
| 825 | bt_message_message_iterator_inactivity_borrow_default_clock_snapshot_const(msgs->right.msg); |
| 826 | |
| 827 | ret = compare_clock_snapshots_and_clock_classes( |
| 828 | left_cs, right_cs); |
| 829 | if (ret != 0) { |
| 830 | goto end; |
| 831 | } |
| 832 | |
| 833 | break; |
| 834 | } |
| 835 | default: |
| 836 | bt_common_abort(); |
| 837 | } |
| 838 | |
| 839 | end: |
| 840 | return ret; |
| 841 | } |
| 842 | |
| 843 | BT_HIDDEN |
| 844 | int common_muxing_compare_messages(const bt_message *left_msg, |
| 845 | const bt_message *right_msg) |
| 846 | { |
| 847 | int ret = 0; |
| 848 | struct messages_to_compare msgs; |
| 849 | |
| 850 | BT_ASSERT(left_msg != right_msg); |
| 851 | |
| 852 | msgs.left.msg = left_msg; |
| 853 | msgs.left.trace = borrow_trace(left_msg); |
| 854 | msgs.left.stream = borrow_stream(left_msg); |
| 855 | |
| 856 | msgs.right.msg = right_msg; |
| 857 | msgs.right.trace = borrow_trace(right_msg); |
| 858 | msgs.right.stream = borrow_stream(right_msg); |
| 859 | |
| 860 | /* Same timestamp: compare trace UUIDs. */ |
| 861 | ret = compare_messages_by_trace_uuid(&msgs); |
| 862 | if (ret) { |
| 863 | goto end; |
| 864 | } |
| 865 | |
| 866 | /* Same timestamp and trace UUID: compare trace names. */ |
| 867 | ret = compare_messages_by_trace_name(&msgs); |
| 868 | if (ret) { |
| 869 | goto end; |
| 870 | } |
| 871 | |
| 872 | /* |
| 873 | * Same timestamp, trace name, and trace UUID: compare stream class |
| 874 | * IDs. |
| 875 | */ |
| 876 | ret = compare_messages_by_stream_class_id(&msgs); |
| 877 | if (ret) { |
| 878 | goto end; |
| 879 | } |
| 880 | |
| 881 | /* |
| 882 | * Same timestamp, trace name, trace UUID, and stream class ID: compare |
| 883 | * stream IDs. |
| 884 | */ |
| 885 | ret = compare_messages_by_stream_id(&msgs); |
| 886 | if (ret) { |
| 887 | goto end; |
| 888 | } |
| 889 | |
| 890 | if (bt_message_get_type(msgs.left.msg) != |
| 891 | bt_message_get_type(msgs.right.msg)) { |
| 892 | /* |
| 893 | * The messages are of different type, we order (arbitrarily) |
| 894 | * in the following way: |
| 895 | * SB < PB < EV < DE < MI < PE < DP < SE |
| 896 | */ |
| 897 | ret = compare_messages_by_type(&msgs); |
| 898 | if (ret) { |
| 899 | goto end; |
| 900 | } |
| 901 | } else { |
| 902 | /* The messages are of the same type. */ |
| 903 | ret = compare_messages_same_type(&msgs); |
| 904 | if (ret) { |
| 905 | goto end; |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | end: |
| 910 | return ret; |
| 911 | } |