| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
| 5 | * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 6 | */ |
| 7 | |
| 8 | #define BT_LOG_TAG "LIB/TRACE" |
| 9 | #include "lib/logging.h" |
| 10 | |
| 11 | #include "lib/assert-cond.h" |
| 12 | #include <babeltrace2/trace-ir/trace.h> |
| 13 | #include <babeltrace2/trace-ir/event-class.h> |
| 14 | #include "compat/compiler.h" |
| 15 | #include <babeltrace2/value.h> |
| 16 | #include "lib/value.h" |
| 17 | #include <babeltrace2/types.h> |
| 18 | #include "compat/endian.h" |
| 19 | #include "common/assert.h" |
| 20 | #include "compat/glib.h" |
| 21 | #include <inttypes.h> |
| 22 | #include <stdint.h> |
| 23 | #include <string.h> |
| 24 | #include <stdbool.h> |
| 25 | #include <stdlib.h> |
| 26 | |
| 27 | #include "attributes.h" |
| 28 | #include "stream-class.h" |
| 29 | #include "stream.h" |
| 30 | #include "trace-class.h" |
| 31 | #include "trace.h" |
| 32 | #include "lib/value.h" |
| 33 | #include "lib/func-status.h" |
| 34 | |
| 35 | struct bt_trace_destruction_listener_elem { |
| 36 | bt_trace_destruction_listener_func func; |
| 37 | void *data; |
| 38 | }; |
| 39 | |
| 40 | #define BT_ASSERT_PRE_DEV_TRACE_HOT(_trace) \ |
| 41 | BT_ASSERT_PRE_DEV_HOT("trace", (_trace), "Trace", ": %!+t", (_trace)) |
| 42 | |
| 43 | #define DESTRUCTION_LISTENER_FUNC_NAME \ |
| 44 | "bt_trace_class_destruction_listener_func" |
| 45 | |
| 46 | static |
| 47 | void destroy_trace(struct bt_object *obj) |
| 48 | { |
| 49 | struct bt_trace *trace = (void *) obj; |
| 50 | |
| 51 | BT_LIB_LOGD("Destroying trace object: %!+t", trace); |
| 52 | BT_OBJECT_PUT_REF_AND_RESET(trace->user_attributes); |
| 53 | |
| 54 | /* |
| 55 | * Call destruction listener functions so that everything else |
| 56 | * still exists in the trace. |
| 57 | */ |
| 58 | if (trace->destruction_listeners) { |
| 59 | uint64_t i; |
| 60 | const struct bt_error *saved_error; |
| 61 | |
| 62 | BT_LIB_LOGD("Calling trace destruction listener(s): %!+t", trace); |
| 63 | |
| 64 | /* |
| 65 | * The trace's reference count is 0 if we're here. Increment |
| 66 | * it to avoid a double-destroy (possibly infinitely recursive). |
| 67 | * This could happen for example if a destruction listener did |
| 68 | * bt_object_get_ref() (or anything that causes |
| 69 | * bt_object_get_ref() to be called) on the trace (ref. |
| 70 | * count goes from 0 to 1), and then bt_object_put_ref(): the |
| 71 | * reference count would go from 1 to 0 again and this function |
| 72 | * would be called again. |
| 73 | */ |
| 74 | trace->base.ref_count++; |
| 75 | |
| 76 | saved_error = bt_current_thread_take_error(); |
| 77 | |
| 78 | /* Call all the trace destruction listeners */ |
| 79 | for (i = 0; i < trace->destruction_listeners->len; i++) { |
| 80 | struct bt_trace_destruction_listener_elem elem = |
| 81 | bt_g_array_index(trace->destruction_listeners, |
| 82 | struct bt_trace_destruction_listener_elem, i); |
| 83 | |
| 84 | if (elem.func) { |
| 85 | elem.func(trace, elem.data); |
| 86 | BT_ASSERT_POST_NO_ERROR( |
| 87 | DESTRUCTION_LISTENER_FUNC_NAME); |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | * The destruction listener should not have kept a |
| 92 | * reference to the trace. |
| 93 | */ |
| 94 | BT_ASSERT_POST(DESTRUCTION_LISTENER_FUNC_NAME, |
| 95 | "trace-reference-count-not-changed", |
| 96 | trace->base.ref_count == 1, |
| 97 | "Destruction listener kept a reference to the trace being destroyed: %![trace-]+t", |
| 98 | trace); |
| 99 | } |
| 100 | g_array_free(trace->destruction_listeners, TRUE); |
| 101 | trace->destruction_listeners = NULL; |
| 102 | |
| 103 | if (saved_error) { |
| 104 | BT_CURRENT_THREAD_MOVE_ERROR_AND_RESET(saved_error); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | g_free(trace->name); |
| 109 | |
| 110 | if (trace->environment) { |
| 111 | BT_LOGD_STR("Destroying environment attributes."); |
| 112 | bt_attributes_destroy(trace->environment); |
| 113 | trace->environment = NULL; |
| 114 | } |
| 115 | |
| 116 | if (trace->streams) { |
| 117 | BT_LOGD_STR("Destroying streams."); |
| 118 | g_ptr_array_free(trace->streams, TRUE); |
| 119 | trace->streams = NULL; |
| 120 | } |
| 121 | |
| 122 | if (trace->stream_classes_stream_count) { |
| 123 | g_hash_table_destroy(trace->stream_classes_stream_count); |
| 124 | trace->stream_classes_stream_count = NULL; |
| 125 | } |
| 126 | |
| 127 | BT_LOGD_STR("Putting trace's class."); |
| 128 | bt_object_put_ref(trace->class); |
| 129 | trace->class = NULL; |
| 130 | g_free(trace); |
| 131 | } |
| 132 | |
| 133 | BT_EXPORT |
| 134 | struct bt_trace *bt_trace_create(struct bt_trace_class *tc) |
| 135 | { |
| 136 | struct bt_trace *trace = NULL; |
| 137 | |
| 138 | BT_ASSERT_PRE_NO_ERROR(); |
| 139 | |
| 140 | BT_LIB_LOGD("Creating trace object: %![tc-]+T", tc); |
| 141 | trace = g_new0(struct bt_trace, 1); |
| 142 | if (!trace) { |
| 143 | BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one trace."); |
| 144 | goto error; |
| 145 | } |
| 146 | |
| 147 | bt_object_init_shared(&trace->base, destroy_trace); |
| 148 | trace->user_attributes = bt_value_map_create(); |
| 149 | if (!trace->user_attributes) { |
| 150 | BT_LIB_LOGE_APPEND_CAUSE( |
| 151 | "Failed to create a map value object."); |
| 152 | goto error; |
| 153 | } |
| 154 | |
| 155 | trace->streams = g_ptr_array_new_with_free_func( |
| 156 | (GDestroyNotify) bt_object_try_spec_release); |
| 157 | if (!trace->streams) { |
| 158 | BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GPtrArray."); |
| 159 | goto error; |
| 160 | } |
| 161 | |
| 162 | trace->stream_classes_stream_count = g_hash_table_new(g_direct_hash, |
| 163 | g_direct_equal); |
| 164 | if (!trace->stream_classes_stream_count) { |
| 165 | BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GHashTable."); |
| 166 | goto error; |
| 167 | } |
| 168 | |
| 169 | trace->environment = bt_attributes_create(); |
| 170 | if (!trace->environment) { |
| 171 | BT_LIB_LOGE_APPEND_CAUSE("Cannot create empty attributes object."); |
| 172 | goto error; |
| 173 | } |
| 174 | |
| 175 | trace->destruction_listeners = g_array_new(FALSE, TRUE, |
| 176 | sizeof(struct bt_trace_destruction_listener_elem)); |
| 177 | if (!trace->destruction_listeners) { |
| 178 | BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GArray."); |
| 179 | goto error; |
| 180 | } |
| 181 | |
| 182 | trace->class = tc; |
| 183 | bt_object_get_ref_no_null_check(trace->class); |
| 184 | BT_LIB_LOGD("Created trace object: %!+t", trace); |
| 185 | goto end; |
| 186 | |
| 187 | error: |
| 188 | BT_OBJECT_PUT_REF_AND_RESET(trace); |
| 189 | |
| 190 | end: |
| 191 | return trace; |
| 192 | } |
| 193 | |
| 194 | BT_EXPORT |
| 195 | const char *bt_trace_get_name(const struct bt_trace *trace) |
| 196 | { |
| 197 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 198 | return trace->name; |
| 199 | } |
| 200 | |
| 201 | BT_EXPORT |
| 202 | enum bt_trace_set_name_status bt_trace_set_name(struct bt_trace *trace, |
| 203 | const char *name) |
| 204 | { |
| 205 | BT_ASSERT_PRE_NO_ERROR(); |
| 206 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 207 | BT_ASSERT_PRE_NAME_NON_NULL(name); |
| 208 | BT_ASSERT_PRE_DEV_TRACE_HOT(trace); |
| 209 | g_free(trace->name); |
| 210 | trace->name = g_strdup(name); |
| 211 | BT_LIB_LOGD("Set trace's name: %!+t", trace); |
| 212 | return BT_FUNC_STATUS_OK; |
| 213 | } |
| 214 | |
| 215 | BT_EXPORT |
| 216 | bt_uuid bt_trace_get_uuid(const struct bt_trace *trace) |
| 217 | { |
| 218 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 219 | return trace->uuid.value; |
| 220 | } |
| 221 | |
| 222 | BT_EXPORT |
| 223 | void bt_trace_set_uuid(struct bt_trace *trace, bt_uuid uuid) |
| 224 | { |
| 225 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 226 | BT_ASSERT_PRE_UUID_NON_NULL(uuid); |
| 227 | BT_ASSERT_PRE_DEV_TRACE_HOT(trace); |
| 228 | bt_uuid_copy(trace->uuid.uuid, uuid); |
| 229 | trace->uuid.value = trace->uuid.uuid; |
| 230 | BT_LIB_LOGD("Set trace's UUID: %!+t", trace); |
| 231 | } |
| 232 | |
| 233 | static |
| 234 | bool trace_has_environment_entry(const struct bt_trace *trace, const char *name) |
| 235 | { |
| 236 | BT_ASSERT(trace); |
| 237 | |
| 238 | return bt_attributes_borrow_field_value_by_name( |
| 239 | trace->environment, name); |
| 240 | } |
| 241 | |
| 242 | static |
| 243 | enum bt_trace_set_environment_entry_status set_environment_entry( |
| 244 | struct bt_trace *trace, |
| 245 | const char *name, struct bt_value *value) |
| 246 | { |
| 247 | int ret; |
| 248 | |
| 249 | BT_ASSERT(trace); |
| 250 | BT_ASSERT(name); |
| 251 | BT_ASSERT(value); |
| 252 | BT_ASSERT_PRE("not-frozen:trace", |
| 253 | !trace->frozen || |
| 254 | !trace_has_environment_entry(trace, name), |
| 255 | "Trace is frozen: cannot replace environment entry: " |
| 256 | "%![trace-]+t, entry-name=\"%s\"", trace, name); |
| 257 | ret = bt_attributes_set_field_value(trace->environment, name, |
| 258 | value); |
| 259 | if (ret) { |
| 260 | ret = BT_FUNC_STATUS_MEMORY_ERROR; |
| 261 | BT_LIB_LOGE_APPEND_CAUSE( |
| 262 | "Cannot set trace's environment entry: " |
| 263 | "%![trace-]+t, entry-name=\"%s\"", trace, name); |
| 264 | } else { |
| 265 | bt_value_freeze(value); |
| 266 | BT_LIB_LOGD("Set trace's environment entry: " |
| 267 | "%![trace-]+t, entry-name=\"%s\"", trace, name); |
| 268 | } |
| 269 | |
| 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | BT_EXPORT |
| 274 | enum bt_trace_set_environment_entry_status |
| 275 | bt_trace_set_environment_entry_string( |
| 276 | struct bt_trace *trace, const char *name, const char *value) |
| 277 | { |
| 278 | int ret; |
| 279 | struct bt_value *value_obj; |
| 280 | |
| 281 | BT_ASSERT_PRE_NO_ERROR(); |
| 282 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 283 | BT_ASSERT_PRE_NAME_NON_NULL(name); |
| 284 | BT_ASSERT_PRE_NON_NULL("value", value, "Value"); |
| 285 | |
| 286 | value_obj = bt_value_string_create_init(value); |
| 287 | if (!value_obj) { |
| 288 | BT_LIB_LOGE_APPEND_CAUSE( |
| 289 | "Cannot create a string value object."); |
| 290 | ret = -1; |
| 291 | goto end; |
| 292 | } |
| 293 | |
| 294 | /* set_environment_entry() logs errors */ |
| 295 | ret = set_environment_entry(trace, name, value_obj); |
| 296 | |
| 297 | end: |
| 298 | bt_object_put_ref(value_obj); |
| 299 | return ret; |
| 300 | } |
| 301 | |
| 302 | BT_EXPORT |
| 303 | enum bt_trace_set_environment_entry_status |
| 304 | bt_trace_set_environment_entry_integer( |
| 305 | struct bt_trace *trace, const char *name, int64_t value) |
| 306 | { |
| 307 | int ret; |
| 308 | struct bt_value *value_obj; |
| 309 | |
| 310 | BT_ASSERT_PRE_NO_ERROR(); |
| 311 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 312 | BT_ASSERT_PRE_NAME_NON_NULL(name); |
| 313 | |
| 314 | value_obj = bt_value_integer_signed_create_init(value); |
| 315 | if (!value_obj) { |
| 316 | BT_LIB_LOGE_APPEND_CAUSE( |
| 317 | "Cannot create an integer value object."); |
| 318 | ret = BT_FUNC_STATUS_MEMORY_ERROR; |
| 319 | goto end; |
| 320 | } |
| 321 | |
| 322 | /* set_environment_entry() logs errors */ |
| 323 | ret = set_environment_entry(trace, name, value_obj); |
| 324 | |
| 325 | end: |
| 326 | bt_object_put_ref(value_obj); |
| 327 | return ret; |
| 328 | } |
| 329 | |
| 330 | BT_EXPORT |
| 331 | uint64_t bt_trace_get_environment_entry_count(const struct bt_trace *trace) |
| 332 | { |
| 333 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 334 | return bt_attributes_get_count(trace->environment); |
| 335 | } |
| 336 | |
| 337 | BT_EXPORT |
| 338 | void bt_trace_borrow_environment_entry_by_index_const( |
| 339 | const struct bt_trace *trace, uint64_t index, |
| 340 | const char **name, const struct bt_value **value) |
| 341 | { |
| 342 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 343 | BT_ASSERT_PRE_DEV_NAME_NON_NULL(name); |
| 344 | BT_ASSERT_PRE_DEV_NON_NULL("value-object-output", value, |
| 345 | "Value object (output)"); |
| 346 | BT_ASSERT_PRE_DEV_VALID_INDEX(index, |
| 347 | bt_attributes_get_count(trace->environment)); |
| 348 | *value = bt_attributes_borrow_field_value(trace->environment, index); |
| 349 | BT_ASSERT(*value); |
| 350 | *name = bt_attributes_get_field_name(trace->environment, index); |
| 351 | BT_ASSERT(*name); |
| 352 | } |
| 353 | |
| 354 | BT_EXPORT |
| 355 | const struct bt_value *bt_trace_borrow_environment_entry_value_by_name_const( |
| 356 | const struct bt_trace *trace, const char *name) |
| 357 | { |
| 358 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 359 | BT_ASSERT_PRE_DEV_NAME_NON_NULL(name); |
| 360 | return bt_attributes_borrow_field_value_by_name(trace->environment, |
| 361 | name); |
| 362 | } |
| 363 | |
| 364 | BT_EXPORT |
| 365 | uint64_t bt_trace_get_stream_count(const struct bt_trace *trace) |
| 366 | { |
| 367 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 368 | return (uint64_t) trace->streams->len; |
| 369 | } |
| 370 | |
| 371 | BT_EXPORT |
| 372 | struct bt_stream *bt_trace_borrow_stream_by_index( |
| 373 | struct bt_trace *trace, uint64_t index) |
| 374 | { |
| 375 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 376 | BT_ASSERT_PRE_DEV_VALID_INDEX(index, trace->streams->len); |
| 377 | return g_ptr_array_index(trace->streams, index); |
| 378 | } |
| 379 | |
| 380 | BT_EXPORT |
| 381 | const struct bt_stream *bt_trace_borrow_stream_by_index_const( |
| 382 | const struct bt_trace *trace, uint64_t index) |
| 383 | { |
| 384 | return bt_trace_borrow_stream_by_index((void *) trace, index); |
| 385 | } |
| 386 | |
| 387 | BT_EXPORT |
| 388 | struct bt_stream *bt_trace_borrow_stream_by_id(struct bt_trace *trace, |
| 389 | uint64_t id) |
| 390 | { |
| 391 | struct bt_stream *stream = NULL; |
| 392 | uint64_t i; |
| 393 | |
| 394 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 395 | |
| 396 | for (i = 0; i < trace->streams->len; i++) { |
| 397 | struct bt_stream *stream_candidate = |
| 398 | g_ptr_array_index(trace->streams, i); |
| 399 | |
| 400 | if (stream_candidate->id == id) { |
| 401 | stream = stream_candidate; |
| 402 | goto end; |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | end: |
| 407 | return stream; |
| 408 | } |
| 409 | |
| 410 | BT_EXPORT |
| 411 | const struct bt_stream *bt_trace_borrow_stream_by_id_const( |
| 412 | const struct bt_trace *trace, uint64_t id) |
| 413 | { |
| 414 | return bt_trace_borrow_stream_by_id((void *) trace, id); |
| 415 | } |
| 416 | |
| 417 | BT_EXPORT |
| 418 | enum bt_trace_add_listener_status bt_trace_add_destruction_listener( |
| 419 | const struct bt_trace *c_trace, |
| 420 | bt_trace_destruction_listener_func listener, |
| 421 | void *data, bt_listener_id *listener_id) |
| 422 | { |
| 423 | struct bt_trace *trace = (void *) c_trace; |
| 424 | uint64_t i; |
| 425 | struct bt_trace_destruction_listener_elem new_elem = { |
| 426 | .func = listener, |
| 427 | .data = data, |
| 428 | }; |
| 429 | |
| 430 | BT_ASSERT_PRE_NO_ERROR(); |
| 431 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 432 | BT_ASSERT_PRE_LISTENER_FUNC_NON_NULL(listener); |
| 433 | |
| 434 | /* Find the next available spot */ |
| 435 | for (i = 0; i < trace->destruction_listeners->len; i++) { |
| 436 | struct bt_trace_destruction_listener_elem elem = |
| 437 | bt_g_array_index(trace->destruction_listeners, |
| 438 | struct bt_trace_destruction_listener_elem, i); |
| 439 | |
| 440 | if (!elem.func) { |
| 441 | break; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | if (i == trace->destruction_listeners->len) { |
| 446 | g_array_append_val(trace->destruction_listeners, new_elem); |
| 447 | } else { |
| 448 | g_array_insert_val(trace->destruction_listeners, i, new_elem); |
| 449 | } |
| 450 | |
| 451 | if (listener_id) { |
| 452 | *listener_id = i; |
| 453 | } |
| 454 | |
| 455 | BT_LIB_LOGD("Added destruction listener: " "%![trace-]+t, " |
| 456 | "listener-id=%" PRIu64, trace, i); |
| 457 | return BT_FUNC_STATUS_OK; |
| 458 | } |
| 459 | |
| 460 | static |
| 461 | bool has_listener_id(const struct bt_trace *trace, uint64_t listener_id) |
| 462 | { |
| 463 | BT_ASSERT(listener_id < trace->destruction_listeners->len); |
| 464 | return (&bt_g_array_index(trace->destruction_listeners, |
| 465 | struct bt_trace_destruction_listener_elem, |
| 466 | listener_id))->func; |
| 467 | } |
| 468 | |
| 469 | BT_EXPORT |
| 470 | enum bt_trace_remove_listener_status bt_trace_remove_destruction_listener( |
| 471 | const struct bt_trace *c_trace, bt_listener_id listener_id) |
| 472 | { |
| 473 | struct bt_trace *trace = (void *) c_trace; |
| 474 | struct bt_trace_destruction_listener_elem *elem; |
| 475 | |
| 476 | BT_ASSERT_PRE_NO_ERROR(); |
| 477 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 478 | BT_ASSERT_PRE("listener-id-exists", |
| 479 | has_listener_id(trace, listener_id), |
| 480 | "Trace has no such trace destruction listener ID: " |
| 481 | "%![trace-]+t, %" PRIu64, trace, listener_id); |
| 482 | elem = &bt_g_array_index(trace->destruction_listeners, |
| 483 | struct bt_trace_destruction_listener_elem, |
| 484 | listener_id); |
| 485 | BT_ASSERT(elem->func); |
| 486 | |
| 487 | elem->func = NULL; |
| 488 | elem->data = NULL; |
| 489 | BT_LIB_LOGD("Removed \"trace destruction listener: " |
| 490 | "%![trace-]+t, listener-id=%" PRIu64, |
| 491 | trace, listener_id); |
| 492 | return BT_FUNC_STATUS_OK; |
| 493 | } |
| 494 | |
| 495 | void _bt_trace_freeze(const struct bt_trace *trace) |
| 496 | { |
| 497 | BT_ASSERT(trace); |
| 498 | BT_LIB_LOGD("Freezing trace's class: %!+T", trace->class); |
| 499 | bt_trace_class_freeze(trace->class); |
| 500 | BT_LIB_LOGD("Freezing trace's user attributes: %!+v", |
| 501 | trace->user_attributes); |
| 502 | bt_value_freeze(trace->user_attributes); |
| 503 | BT_LIB_LOGD("Freezing trace: %!+t", trace); |
| 504 | ((struct bt_trace *) trace)->frozen = true; |
| 505 | } |
| 506 | |
| 507 | void bt_trace_add_stream(struct bt_trace *trace, struct bt_stream *stream) |
| 508 | { |
| 509 | guint count = 0; |
| 510 | |
| 511 | bt_object_set_parent(&stream->base, &trace->base); |
| 512 | g_ptr_array_add(trace->streams, stream); |
| 513 | bt_trace_freeze(trace); |
| 514 | |
| 515 | if (bt_g_hash_table_contains(trace->stream_classes_stream_count, |
| 516 | stream->class)) { |
| 517 | count = GPOINTER_TO_UINT(g_hash_table_lookup( |
| 518 | trace->stream_classes_stream_count, stream->class)); |
| 519 | } |
| 520 | |
| 521 | g_hash_table_insert(trace->stream_classes_stream_count, |
| 522 | stream->class, GUINT_TO_POINTER(count + 1)); |
| 523 | } |
| 524 | |
| 525 | uint64_t bt_trace_get_automatic_stream_id(const struct bt_trace *trace, |
| 526 | const struct bt_stream_class *stream_class) |
| 527 | { |
| 528 | gpointer orig_key; |
| 529 | gpointer value; |
| 530 | uint64_t id = 0; |
| 531 | |
| 532 | BT_ASSERT(stream_class); |
| 533 | BT_ASSERT(trace); |
| 534 | if (g_hash_table_lookup_extended(trace->stream_classes_stream_count, |
| 535 | stream_class, &orig_key, &value)) { |
| 536 | id = (uint64_t) GPOINTER_TO_UINT(value); |
| 537 | } |
| 538 | |
| 539 | return id; |
| 540 | } |
| 541 | |
| 542 | BT_EXPORT |
| 543 | struct bt_trace_class *bt_trace_borrow_class(struct bt_trace *trace) |
| 544 | { |
| 545 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 546 | return trace->class; |
| 547 | } |
| 548 | |
| 549 | BT_EXPORT |
| 550 | const struct bt_trace_class *bt_trace_borrow_class_const( |
| 551 | const struct bt_trace *trace) |
| 552 | { |
| 553 | return bt_trace_borrow_class((void *) trace); |
| 554 | } |
| 555 | |
| 556 | BT_EXPORT |
| 557 | const struct bt_value *bt_trace_borrow_user_attributes_const( |
| 558 | const struct bt_trace *trace) |
| 559 | { |
| 560 | BT_ASSERT_PRE_DEV_TRACE_NON_NULL(trace); |
| 561 | return trace->user_attributes; |
| 562 | } |
| 563 | |
| 564 | BT_EXPORT |
| 565 | struct bt_value *bt_trace_borrow_user_attributes(struct bt_trace *trace) |
| 566 | { |
| 567 | return (void *) bt_trace_borrow_user_attributes_const((void *) trace); |
| 568 | } |
| 569 | |
| 570 | BT_EXPORT |
| 571 | void bt_trace_set_user_attributes( |
| 572 | struct bt_trace *trace, |
| 573 | const struct bt_value *user_attributes) |
| 574 | { |
| 575 | BT_ASSERT_PRE_TRACE_NON_NULL(trace); |
| 576 | BT_ASSERT_PRE_USER_ATTRS_NON_NULL(user_attributes); |
| 577 | BT_ASSERT_PRE_USER_ATTRS_IS_MAP(user_attributes); |
| 578 | BT_ASSERT_PRE_DEV_TRACE_HOT(trace); |
| 579 | bt_object_put_ref_no_null_check(trace->user_attributes); |
| 580 | trace->user_attributes = (void *) user_attributes; |
| 581 | bt_object_get_ref_no_null_check(trace->user_attributes); |
| 582 | } |
| 583 | |
| 584 | BT_EXPORT |
| 585 | void bt_trace_get_ref(const struct bt_trace *trace) |
| 586 | { |
| 587 | bt_object_get_ref(trace); |
| 588 | } |
| 589 | |
| 590 | BT_EXPORT |
| 591 | void bt_trace_put_ref(const struct bt_trace *trace) |
| 592 | { |
| 593 | bt_object_put_ref(trace); |
| 594 | } |