| 1 | /* |
| 2 | * notification.c |
| 3 | * |
| 4 | * Tests suite for LTTng notification API |
| 5 | * |
| 6 | * Copyright (C) 2017 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> |
| 7 | * |
| 8 | * SPDX-License-Identifier: MIT |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <assert.h> |
| 13 | #include <math.h> |
| 14 | #include <stdbool.h> |
| 15 | #include <stdio.h> |
| 16 | #include <stdlib.h> |
| 17 | #include <string.h> |
| 18 | #include <unistd.h> |
| 19 | #include <inttypes.h> |
| 20 | #include <sys/types.h> |
| 21 | #include <sys/stat.h> |
| 22 | #include <fcntl.h> |
| 23 | #include <signal.h> |
| 24 | #include <poll.h> |
| 25 | |
| 26 | #include <common/compat/errno.h> |
| 27 | #include <lttng/action/action.h> |
| 28 | #include <lttng/action/notify.h> |
| 29 | #include <lttng/condition/buffer-usage.h> |
| 30 | #include <lttng/condition/condition.h> |
| 31 | #include <lttng/condition/evaluation.h> |
| 32 | #include <lttng/domain.h> |
| 33 | #include <lttng/endpoint.h> |
| 34 | #include <lttng/lttng-error.h> |
| 35 | #include <lttng/notification/channel.h> |
| 36 | #include <lttng/notification/notification.h> |
| 37 | #include <lttng/trigger/trigger.h> |
| 38 | #include <lttng/lttng.h> |
| 39 | |
| 40 | #include <tap/tap.h> |
| 41 | |
| 42 | #define NUM_TESTS 104 |
| 43 | |
| 44 | int nb_args = 0; |
| 45 | int named_pipe_args_start = 0; |
| 46 | pid_t app_pid = -1; |
| 47 | const char *app_state_file = NULL; |
| 48 | |
| 49 | static |
| 50 | void wait_on_file(const char *path, bool file_exist) |
| 51 | { |
| 52 | if (!path) { |
| 53 | return; |
| 54 | } |
| 55 | for (;;) { |
| 56 | int ret; |
| 57 | struct stat buf; |
| 58 | |
| 59 | ret = stat(path, &buf); |
| 60 | if (ret == -1 && errno == ENOENT) { |
| 61 | if (file_exist) { |
| 62 | /* |
| 63 | * The file does not exist. wait a bit and |
| 64 | * continue looping until it does. |
| 65 | */ |
| 66 | (void) poll(NULL, 0, 10); |
| 67 | continue; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * File does not exist and the exit condition we want. |
| 72 | * Break from the loop and return. |
| 73 | */ |
| 74 | break; |
| 75 | } |
| 76 | if (ret) { |
| 77 | perror("stat"); |
| 78 | exit(EXIT_FAILURE); |
| 79 | } |
| 80 | /* |
| 81 | * stat() returned 0, so the file exists. break now only if |
| 82 | * that's the exit condition we want. |
| 83 | */ |
| 84 | if (file_exist) { |
| 85 | break; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | static |
| 91 | int write_pipe(const char *path, uint8_t data) |
| 92 | { |
| 93 | int ret = 0; |
| 94 | int fd = 0; |
| 95 | |
| 96 | fd = open(path, O_WRONLY | O_NONBLOCK); |
| 97 | if (fd < 0) { |
| 98 | perror("Could not open consumer control named pipe"); |
| 99 | goto end; |
| 100 | } |
| 101 | |
| 102 | ret = write(fd, &data , sizeof(data)); |
| 103 | if (ret < 1) { |
| 104 | perror("Named pipe write failed"); |
| 105 | if (close(fd)) { |
| 106 | perror("Named pipe close failed"); |
| 107 | } |
| 108 | ret = -1; |
| 109 | goto end; |
| 110 | } |
| 111 | |
| 112 | ret = close(fd); |
| 113 | if (ret < 0) { |
| 114 | perror("Name pipe closing failed"); |
| 115 | ret = -1; |
| 116 | goto end; |
| 117 | } |
| 118 | end: |
| 119 | return ret; |
| 120 | } |
| 121 | |
| 122 | static |
| 123 | int stop_consumer(const char **argv) |
| 124 | { |
| 125 | int ret = 0, i; |
| 126 | |
| 127 | for (i = named_pipe_args_start; i < nb_args; i++) { |
| 128 | ret = write_pipe(argv[i], 49); |
| 129 | } |
| 130 | return ret; |
| 131 | } |
| 132 | |
| 133 | static |
| 134 | int resume_consumer(const char **argv) |
| 135 | { |
| 136 | int ret = 0, i; |
| 137 | |
| 138 | for (i = named_pipe_args_start; i < nb_args; i++) { |
| 139 | ret = write_pipe(argv[i], 0); |
| 140 | } |
| 141 | return ret; |
| 142 | } |
| 143 | |
| 144 | static |
| 145 | int suspend_application(void) |
| 146 | { |
| 147 | int ret; |
| 148 | struct stat buf; |
| 149 | |
| 150 | if (!stat(app_state_file, &buf)) { |
| 151 | fail("App is already in a suspended state."); |
| 152 | ret = -1; |
| 153 | goto error; |
| 154 | } |
| 155 | |
| 156 | /* |
| 157 | * Send SIGUSR1 to application instructing it to bypass tracepoint. |
| 158 | */ |
| 159 | ret = kill(app_pid, SIGUSR1); |
| 160 | if (ret) { |
| 161 | fail("SIGUSR1 failed. errno %d", errno); |
| 162 | ret = -1; |
| 163 | goto error; |
| 164 | } |
| 165 | |
| 166 | wait_on_file(app_state_file, true); |
| 167 | |
| 168 | error: |
| 169 | return ret; |
| 170 | |
| 171 | } |
| 172 | |
| 173 | static |
| 174 | int resume_application() |
| 175 | { |
| 176 | int ret; |
| 177 | struct stat buf; |
| 178 | |
| 179 | ret = stat(app_state_file, &buf); |
| 180 | if (ret == -1 && errno == ENOENT) { |
| 181 | fail("State file does not exist"); |
| 182 | goto error; |
| 183 | } |
| 184 | if (ret) { |
| 185 | perror("stat"); |
| 186 | goto error; |
| 187 | } |
| 188 | |
| 189 | ret = kill(app_pid, SIGUSR1); |
| 190 | if (ret) { |
| 191 | fail("SIGUSR1 failed. errno %d", errno); |
| 192 | ret = -1; |
| 193 | goto error; |
| 194 | } |
| 195 | |
| 196 | wait_on_file(app_state_file, false); |
| 197 | |
| 198 | error: |
| 199 | return ret; |
| 200 | |
| 201 | } |
| 202 | |
| 203 | |
| 204 | static |
| 205 | void test_triggers_buffer_usage_condition(const char *session_name, |
| 206 | const char *channel_name, |
| 207 | enum lttng_domain_type domain_type, |
| 208 | enum lttng_condition_type condition_type) |
| 209 | { |
| 210 | unsigned int test_vector_size = 5, i; |
| 211 | enum lttng_condition_status condition_status; |
| 212 | struct lttng_action *action; |
| 213 | |
| 214 | /* Set-up */ |
| 215 | action = lttng_action_notify_create(); |
| 216 | if (!action) { |
| 217 | fail("Setup error on action creation"); |
| 218 | goto end; |
| 219 | } |
| 220 | |
| 221 | /* Test lttng_register_trigger with null value */ |
| 222 | ok(lttng_register_trigger(NULL) == -LTTNG_ERR_INVALID, "Registering a NULL trigger fails as expected"); |
| 223 | |
| 224 | /* Test: register a trigger */ |
| 225 | |
| 226 | for (i = 0; i < pow(2,test_vector_size); i++) { |
| 227 | int loop_ret = 0; |
| 228 | char *test_tuple_string = NULL; |
| 229 | unsigned int mask_position = 0; |
| 230 | bool session_name_set = false; |
| 231 | bool channel_name_set = false; |
| 232 | bool threshold_ratio_set = false; |
| 233 | bool threshold_byte_set = false; |
| 234 | bool domain_type_set = false; |
| 235 | |
| 236 | struct lttng_trigger *trigger = NULL; |
| 237 | struct lttng_condition *condition = NULL; |
| 238 | |
| 239 | /* Create base condition */ |
| 240 | switch (condition_type) { |
| 241 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW: |
| 242 | condition = lttng_condition_buffer_usage_low_create(); |
| 243 | break; |
| 244 | case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH: |
| 245 | condition = lttng_condition_buffer_usage_high_create(); |
| 246 | break; |
| 247 | default: |
| 248 | loop_ret = 1; |
| 249 | goto loop_end; |
| 250 | } |
| 251 | |
| 252 | if (!condition) { |
| 253 | loop_ret = 1; |
| 254 | goto loop_end; |
| 255 | |
| 256 | } |
| 257 | |
| 258 | /* Prepare the condition for trigger registration test */ |
| 259 | |
| 260 | /* Set session name */ |
| 261 | if ((1 << mask_position) & i) { |
| 262 | condition_status = lttng_condition_buffer_usage_set_session_name( |
| 263 | condition, session_name); |
| 264 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 265 | loop_ret = 1; |
| 266 | goto loop_end; |
| 267 | } |
| 268 | session_name_set = true; |
| 269 | } |
| 270 | mask_position++; |
| 271 | |
| 272 | /* Set channel name */ |
| 273 | if ((1 << mask_position) & i) { |
| 274 | condition_status = lttng_condition_buffer_usage_set_channel_name( |
| 275 | condition, channel_name); |
| 276 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 277 | loop_ret = 1; |
| 278 | goto loop_end; |
| 279 | } |
| 280 | channel_name_set = true; |
| 281 | } |
| 282 | mask_position++; |
| 283 | |
| 284 | /* Set threshold ratio */ |
| 285 | if ((1 << mask_position) & i) { |
| 286 | condition_status = lttng_condition_buffer_usage_set_threshold_ratio( |
| 287 | condition, 0.0); |
| 288 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 289 | loop_ret = 1; |
| 290 | goto loop_end; |
| 291 | } |
| 292 | threshold_ratio_set = true; |
| 293 | } |
| 294 | mask_position++; |
| 295 | |
| 296 | /* Set threshold byte */ |
| 297 | if ((1 << mask_position) & i) { |
| 298 | condition_status = lttng_condition_buffer_usage_set_threshold( |
| 299 | condition, 0); |
| 300 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 301 | loop_ret = 1; |
| 302 | goto loop_end; |
| 303 | } |
| 304 | threshold_byte_set = true; |
| 305 | } |
| 306 | mask_position++; |
| 307 | |
| 308 | /* Set domain type */ |
| 309 | if ((1 << mask_position) & i) { |
| 310 | condition_status = lttng_condition_buffer_usage_set_domain_type( |
| 311 | condition, LTTNG_DOMAIN_UST); |
| 312 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 313 | loop_ret = 1; |
| 314 | goto loop_end; |
| 315 | } |
| 316 | domain_type_set = true; |
| 317 | } |
| 318 | |
| 319 | /* Safety check */ |
| 320 | if (mask_position != test_vector_size -1) { |
| 321 | assert("Logic error for test vector generation"); |
| 322 | } |
| 323 | |
| 324 | loop_ret = asprintf(&test_tuple_string, "session name %s, channel name %s, threshold ratio %s, threshold byte %s, domain type %s", |
| 325 | session_name_set ? "set" : "unset", |
| 326 | channel_name_set ? "set" : "unset", |
| 327 | threshold_ratio_set ? "set" : "unset", |
| 328 | threshold_byte_set ? "set" : "unset", |
| 329 | domain_type_set? "set" : "unset"); |
| 330 | if (!test_tuple_string || loop_ret < 0) { |
| 331 | loop_ret = 1; |
| 332 | goto loop_end; |
| 333 | } |
| 334 | |
| 335 | /* Create trigger */ |
| 336 | trigger = lttng_trigger_create(condition, action); |
| 337 | if (!trigger) { |
| 338 | loop_ret = 1; |
| 339 | goto loop_end; |
| 340 | } |
| 341 | |
| 342 | loop_ret = lttng_register_trigger(trigger); |
| 343 | |
| 344 | loop_end: |
| 345 | if (loop_ret == 1) { |
| 346 | fail("Setup error occurred for tuple: %s", test_tuple_string); |
| 347 | goto loop_cleanup; |
| 348 | } |
| 349 | |
| 350 | /* This combination happens three times */ |
| 351 | if (session_name_set && channel_name_set |
| 352 | && (threshold_ratio_set || threshold_byte_set) |
| 353 | && domain_type_set) { |
| 354 | ok(loop_ret == 0, "Trigger is registered: %s", test_tuple_string); |
| 355 | |
| 356 | /* |
| 357 | * Test that a trigger cannot be registered |
| 358 | * multiple time. |
| 359 | */ |
| 360 | loop_ret = lttng_register_trigger(trigger); |
| 361 | ok(loop_ret == -LTTNG_ERR_TRIGGER_EXISTS, "Re-register trigger fails as expected: %s", test_tuple_string); |
| 362 | |
| 363 | /* Test that a trigger can be unregistered */ |
| 364 | loop_ret = lttng_unregister_trigger(trigger); |
| 365 | ok(loop_ret == 0, "Unregister trigger: %s", test_tuple_string); |
| 366 | |
| 367 | /* |
| 368 | * Test that unregistration of a non-previously |
| 369 | * registered trigger fail. |
| 370 | */ |
| 371 | loop_ret = lttng_unregister_trigger(trigger); |
| 372 | ok(loop_ret == -LTTNG_ERR_TRIGGER_NOT_FOUND, "Unregister of a non-registered trigger fails as expected: %s", test_tuple_string); |
| 373 | } else { |
| 374 | ok(loop_ret == -LTTNG_ERR_INVALID_TRIGGER, "Trigger is invalid as expected and cannot be registered: %s", test_tuple_string); |
| 375 | } |
| 376 | |
| 377 | loop_cleanup: |
| 378 | free(test_tuple_string); |
| 379 | lttng_trigger_destroy(trigger); |
| 380 | lttng_condition_destroy(condition); |
| 381 | } |
| 382 | |
| 383 | end: |
| 384 | lttng_action_destroy(action); |
| 385 | } |
| 386 | |
| 387 | static |
| 388 | void wait_data_pending(const char *session_name) |
| 389 | { |
| 390 | int ret; |
| 391 | |
| 392 | do { |
| 393 | ret = lttng_data_pending(session_name); |
| 394 | assert(ret >= 0); |
| 395 | } while (ret != 0); |
| 396 | } |
| 397 | |
| 398 | static |
| 399 | void test_notification_channel(const char *session_name, const char *channel_name, const enum lttng_domain_type domain_type, const char **argv) |
| 400 | { |
| 401 | int ret = 0; |
| 402 | enum lttng_condition_status condition_status; |
| 403 | enum lttng_notification_channel_status nc_status; |
| 404 | |
| 405 | struct lttng_action *action = NULL; |
| 406 | struct lttng_notification *notification = NULL; |
| 407 | struct lttng_notification_channel *notification_channel = NULL; |
| 408 | struct lttng_trigger *trigger = NULL; |
| 409 | |
| 410 | struct lttng_condition *low_condition = NULL; |
| 411 | struct lttng_condition *high_condition = NULL; |
| 412 | struct lttng_condition *dummy_invalid_condition = NULL; |
| 413 | struct lttng_condition *dummy_condition = NULL; |
| 414 | |
| 415 | double low_ratio = 0.0; |
| 416 | double high_ratio = 0.90; |
| 417 | |
| 418 | /* Set-up */ |
| 419 | action = lttng_action_notify_create(); |
| 420 | if (!action) { |
| 421 | fail("Setup error on action creation"); |
| 422 | goto end; |
| 423 | } |
| 424 | |
| 425 | /* Create a dummy, empty condition for later test */ |
| 426 | dummy_invalid_condition = lttng_condition_buffer_usage_low_create(); |
| 427 | if (!dummy_invalid_condition) { |
| 428 | fail("Setup error on condition creation"); |
| 429 | goto end; |
| 430 | } |
| 431 | |
| 432 | /* Create a valid dummy condition with a ratio of 0.5 */ |
| 433 | dummy_condition = lttng_condition_buffer_usage_low_create(); |
| 434 | if (!dummy_condition) { |
| 435 | fail("Setup error on dummy_condition creation"); |
| 436 | goto end; |
| 437 | |
| 438 | } |
| 439 | condition_status = lttng_condition_buffer_usage_set_threshold_ratio( |
| 440 | dummy_condition, 0.5); |
| 441 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 442 | fail("Setup error on condition creation"); |
| 443 | goto end; |
| 444 | } |
| 445 | |
| 446 | condition_status = lttng_condition_buffer_usage_set_session_name( |
| 447 | dummy_condition, session_name); |
| 448 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 449 | fail("Setup error on dummy_condition creation"); |
| 450 | goto end; |
| 451 | } |
| 452 | condition_status = lttng_condition_buffer_usage_set_channel_name( |
| 453 | dummy_condition, channel_name); |
| 454 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 455 | fail("Setup error on dummy_condition creation"); |
| 456 | goto end; |
| 457 | } |
| 458 | condition_status = lttng_condition_buffer_usage_set_domain_type( |
| 459 | dummy_condition, domain_type); |
| 460 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 461 | fail("Setup error on dummy_condition creation"); |
| 462 | goto end; |
| 463 | } |
| 464 | |
| 465 | /* Register a low condition with a ratio */ |
| 466 | low_condition = lttng_condition_buffer_usage_low_create(); |
| 467 | if (!low_condition) { |
| 468 | fail("Setup error on low_condition creation"); |
| 469 | goto end; |
| 470 | } |
| 471 | condition_status = lttng_condition_buffer_usage_set_threshold_ratio( |
| 472 | low_condition, low_ratio); |
| 473 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 474 | fail("Setup error on low_condition creation"); |
| 475 | goto end; |
| 476 | } |
| 477 | |
| 478 | condition_status = lttng_condition_buffer_usage_set_session_name( |
| 479 | low_condition, session_name); |
| 480 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 481 | fail("Setup error on low_condition creation"); |
| 482 | goto end; |
| 483 | } |
| 484 | condition_status = lttng_condition_buffer_usage_set_channel_name( |
| 485 | low_condition, channel_name); |
| 486 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 487 | fail("Setup error on low_condition creation"); |
| 488 | goto end; |
| 489 | } |
| 490 | condition_status = lttng_condition_buffer_usage_set_domain_type( |
| 491 | low_condition, domain_type); |
| 492 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 493 | fail("Setup error on low_condition creation"); |
| 494 | goto end; |
| 495 | |
| 496 | } |
| 497 | |
| 498 | /* Register a high condition with a ratio */ |
| 499 | high_condition = lttng_condition_buffer_usage_high_create(); |
| 500 | if (!high_condition) { |
| 501 | fail("Setup error on high_condition creation"); |
| 502 | goto end; |
| 503 | } |
| 504 | |
| 505 | condition_status = lttng_condition_buffer_usage_set_threshold_ratio( |
| 506 | high_condition, high_ratio); |
| 507 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 508 | fail("Setup error on high_condition creation"); |
| 509 | goto end; |
| 510 | } |
| 511 | |
| 512 | condition_status = lttng_condition_buffer_usage_set_session_name( |
| 513 | high_condition, session_name); |
| 514 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 515 | fail("Setup error on high_condition creation"); |
| 516 | goto end; |
| 517 | } |
| 518 | condition_status = lttng_condition_buffer_usage_set_channel_name( |
| 519 | high_condition, channel_name); |
| 520 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 521 | fail("Setup error on high_condition creation"); |
| 522 | goto end; |
| 523 | } |
| 524 | condition_status = lttng_condition_buffer_usage_set_domain_type( |
| 525 | high_condition, domain_type); |
| 526 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { |
| 527 | fail("Setup error on high_condition creation"); |
| 528 | goto end; |
| 529 | } |
| 530 | |
| 531 | /* Register the triggers for low and high condition */ |
| 532 | trigger = lttng_trigger_create(low_condition, action); |
| 533 | if (!trigger) { |
| 534 | fail("Setup error on low trigger creation"); |
| 535 | goto end; |
| 536 | } |
| 537 | |
| 538 | ret = lttng_register_trigger(trigger); |
| 539 | if (ret) { |
| 540 | fail("Setup error on low trigger registration"); |
| 541 | goto end; |
| 542 | } |
| 543 | |
| 544 | lttng_trigger_destroy(trigger); |
| 545 | trigger = NULL; |
| 546 | |
| 547 | trigger = lttng_trigger_create(high_condition, action); |
| 548 | if (!trigger) { |
| 549 | fail("Setup error on high trigger creation"); |
| 550 | goto end; |
| 551 | } |
| 552 | |
| 553 | ret = lttng_register_trigger(trigger); |
| 554 | if (ret) { |
| 555 | fail("Setup error on high trigger registration"); |
| 556 | goto end; |
| 557 | } |
| 558 | |
| 559 | /* Begin testing */ |
| 560 | notification_channel = lttng_notification_channel_create(lttng_session_daemon_notification_endpoint); |
| 561 | ok(notification_channel, "Notification channel object creation"); |
| 562 | if (!notification_channel) { |
| 563 | goto end; |
| 564 | } |
| 565 | |
| 566 | /* Basic error path check */ |
| 567 | nc_status = lttng_notification_channel_subscribe(NULL, NULL); |
| 568 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NULL, NULL"); |
| 569 | |
| 570 | nc_status = lttng_notification_channel_subscribe(notification_channel, NULL); |
| 571 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NON-NULL, NULL"); |
| 572 | |
| 573 | nc_status = lttng_notification_channel_subscribe(NULL, low_condition); |
| 574 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NULL, NON-NULL"); |
| 575 | |
| 576 | nc_status = lttng_notification_channel_subscribe(notification_channel, dummy_invalid_condition); |
| 577 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Subscribing to an invalid condition"); |
| 578 | |
| 579 | nc_status = lttng_notification_channel_unsubscribe(notification_channel, dummy_invalid_condition); |
| 580 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Unsubscribing from an invalid condition"); |
| 581 | |
| 582 | nc_status = lttng_notification_channel_unsubscribe(notification_channel, dummy_condition); |
| 583 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_UNKNOWN_CONDITION, "Unsubscribing from a valid unknown condition"); |
| 584 | |
| 585 | /* Subscribe a valid low condition */ |
| 586 | nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition); |
| 587 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Subscribe to condition"); |
| 588 | |
| 589 | /* Subscribe a valid high condition */ |
| 590 | nc_status = lttng_notification_channel_subscribe(notification_channel, high_condition); |
| 591 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Subscribe to condition"); |
| 592 | |
| 593 | nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition); |
| 594 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED, "Subscribe to a condition for which subscription was already done"); |
| 595 | |
| 596 | nc_status = lttng_notification_channel_subscribe(notification_channel, high_condition); |
| 597 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED, "Subscribe to a condition for which subscription was already done"); |
| 598 | |
| 599 | /* Wait for notification to happen */ |
| 600 | stop_consumer(argv); |
| 601 | lttng_start_tracing(session_name); |
| 602 | |
| 603 | /* Wait for high notification */ |
| 604 | do { |
| 605 | nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); |
| 606 | } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED); |
| 607 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK |
| 608 | && notification |
| 609 | && lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH, |
| 610 | "High notification received after intermediary communication"); |
| 611 | lttng_notification_destroy(notification); |
| 612 | notification = NULL; |
| 613 | |
| 614 | suspend_application(); |
| 615 | lttng_stop_tracing_no_wait(session_name); |
| 616 | resume_consumer(argv); |
| 617 | wait_data_pending(session_name); |
| 618 | |
| 619 | /* |
| 620 | * Test that communication still work even if there is notification |
| 621 | * waiting for consumption. |
| 622 | */ |
| 623 | |
| 624 | nc_status = lttng_notification_channel_unsubscribe(notification_channel, low_condition); |
| 625 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe with pending notification"); |
| 626 | |
| 627 | nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition); |
| 628 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "subscribe with pending notification"); |
| 629 | |
| 630 | do { |
| 631 | nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); |
| 632 | } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED); |
| 633 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK |
| 634 | && notification |
| 635 | && lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW, |
| 636 | "Low notification received after intermediary communication"); |
| 637 | lttng_notification_destroy(notification); |
| 638 | notification = NULL; |
| 639 | |
| 640 | /* Stop consumer to force a high notification */ |
| 641 | stop_consumer(argv); |
| 642 | resume_application(); |
| 643 | lttng_start_tracing(session_name); |
| 644 | |
| 645 | do { |
| 646 | nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); |
| 647 | } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED); |
| 648 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && |
| 649 | lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH, |
| 650 | "High notification received after intermediary communication"); |
| 651 | lttng_notification_destroy(notification); |
| 652 | notification = NULL; |
| 653 | |
| 654 | suspend_application(); |
| 655 | lttng_stop_tracing_no_wait(session_name); |
| 656 | resume_consumer(argv); |
| 657 | wait_data_pending(session_name); |
| 658 | |
| 659 | do { |
| 660 | nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); |
| 661 | } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED); |
| 662 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && |
| 663 | lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW, |
| 664 | "Low notification received after re-subscription"); |
| 665 | lttng_notification_destroy(notification); |
| 666 | notification = NULL; |
| 667 | |
| 668 | stop_consumer(argv); |
| 669 | resume_application(); |
| 670 | /* Stop consumer to force a high notification */ |
| 671 | lttng_start_tracing(session_name); |
| 672 | |
| 673 | do { |
| 674 | nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); |
| 675 | } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED); |
| 676 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && |
| 677 | lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH, |
| 678 | "High notification"); |
| 679 | lttng_notification_destroy(notification); |
| 680 | notification = NULL; |
| 681 | |
| 682 | /* Resume consumer to allow event consumption */ |
| 683 | suspend_application(); |
| 684 | lttng_stop_tracing_no_wait(session_name); |
| 685 | resume_consumer(argv); |
| 686 | wait_data_pending(session_name); |
| 687 | |
| 688 | nc_status = lttng_notification_channel_unsubscribe(notification_channel, low_condition); |
| 689 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe low condition with pending notification"); |
| 690 | nc_status = lttng_notification_channel_unsubscribe(notification_channel, high_condition); |
| 691 | ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe high condition with pending notification"); |
| 692 | |
| 693 | end: |
| 694 | lttng_notification_channel_destroy(notification_channel); |
| 695 | lttng_trigger_destroy(trigger); |
| 696 | lttng_action_destroy(action); |
| 697 | lttng_condition_destroy(low_condition); |
| 698 | lttng_condition_destroy(high_condition); |
| 699 | lttng_condition_destroy(dummy_invalid_condition); |
| 700 | lttng_condition_destroy(dummy_condition); |
| 701 | } |
| 702 | |
| 703 | int main(int argc, const char *argv[]) |
| 704 | { |
| 705 | const char *session_name = NULL; |
| 706 | const char *channel_name = NULL; |
| 707 | const char *domain_type_string = NULL; |
| 708 | enum lttng_domain_type domain_type = LTTNG_DOMAIN_NONE; |
| 709 | |
| 710 | plan_tests(NUM_TESTS); |
| 711 | |
| 712 | /* Argument 6 and upward are named pipe location for consumerd control */ |
| 713 | named_pipe_args_start = 6; |
| 714 | |
| 715 | if (argc < 7) { |
| 716 | fail("Missing parameter for tests to run %d", argc); |
| 717 | goto error; |
| 718 | } |
| 719 | |
| 720 | nb_args = argc; |
| 721 | |
| 722 | domain_type_string = argv[1]; |
| 723 | session_name = argv[2]; |
| 724 | channel_name = argv[3]; |
| 725 | app_pid = (pid_t) atoi(argv[4]); |
| 726 | app_state_file = argv[5]; |
| 727 | |
| 728 | if (!strcmp("LTTNG_DOMAIN_UST", domain_type_string)) { |
| 729 | domain_type = LTTNG_DOMAIN_UST; |
| 730 | } |
| 731 | if (!strcmp("LTTNG_DOMAIN_KERNEL", domain_type_string)) { |
| 732 | domain_type = LTTNG_DOMAIN_KERNEL; |
| 733 | } |
| 734 | if (domain_type == LTTNG_DOMAIN_NONE) { |
| 735 | fail("Unknown domain type"); |
| 736 | goto error; |
| 737 | } |
| 738 | |
| 739 | diag("Test trigger for domain %s with buffer_usage_low condition", domain_type_string); |
| 740 | test_triggers_buffer_usage_condition(session_name, channel_name, domain_type, LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW); |
| 741 | diag("Test trigger for domain %s with buffer_usage_high condition", domain_type_string); |
| 742 | test_triggers_buffer_usage_condition(session_name, channel_name, domain_type, LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH); |
| 743 | |
| 744 | diag("Test notification channel api for domain %s", domain_type_string); |
| 745 | test_notification_channel(session_name, channel_name, domain_type, argv); |
| 746 | error: |
| 747 | return exit_status(); |
| 748 | } |
| 749 | |