lib/trace-ir/stream-class.c

   1 /*
   2  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #define BT_LOG_TAG "STREAM-CLASS"
  26 #include <babeltrace/lib-logging-internal.h>
  27
  28 #include <babeltrace/assert-pre-internal.h>
  29 #include <babeltrace/trace-ir/clock-class-internal.h>
  30 #include <babeltrace/trace-ir/event-class-internal.h>
  31 #include <babeltrace/trace-ir/field-classes-internal.h>
  32 #include <babeltrace/trace-ir/fields-internal.h>
  33 #include <babeltrace/trace-ir/stream-class-internal.h>
  34 #include <babeltrace/trace-ir/private-trace.h>
  35 #include <babeltrace/trace-ir/trace-internal.h>
  36 #include <babeltrace/trace-ir/utils-internal.h>
  37 #include <babeltrace/trace-ir/field-wrapper-internal.h>
  38 #include <babeltrace/trace-ir/resolve-field-path-internal.h>
  39 #include <babeltrace/object.h>
  40 #include <babeltrace/compiler-internal.h>
  41 #include <babeltrace/align-internal.h>
  42 #include <babeltrace/endian-internal.h>
  43 #include <babeltrace/assert-internal.h>
  44 #include <babeltrace/property-internal.h>
  45 #include <inttypes.h>
  46 #include <stdint.h>
  47 #include <stdbool.h>
  48
  49 #define BT_ASSERT_PRE_STREAM_CLASS_HOT(_sc) \
  50         BT_ASSERT_PRE_HOT((_sc), "Stream class", ": %!+S", (_sc))
  51
  52 static
  53 void destroy_stream_class(struct bt_object *obj)
  54 {
  55         struct bt_stream_class *stream_class = (void *) obj;
  56
  57         BT_LIB_LOGD("Destroying stream class: %!+S", stream_class);
  58         BT_LOGD_STR("Putting default clock class.");
  59         bt_object_put_ref(stream_class->default_clock_class);
  60
  61         if (stream_class->event_classes) {
  62                 BT_LOGD_STR("Destroying event classes.");
  63                 g_ptr_array_free(stream_class->event_classes, TRUE);
  64         }
  65
  66         if (stream_class->name.str) {
  67                 g_string_free(stream_class->name.str, TRUE);
  68         }
  69
  70         BT_LOGD_STR("Putting event header field classe.");
  71         bt_object_put_ref(stream_class->event_header_fc);
  72         BT_LOGD_STR("Putting packet context field classe.");
  73         bt_object_put_ref(stream_class->packet_context_fc);
  74         BT_LOGD_STR("Putting event common context field classe.");
  75         bt_object_put_ref(stream_class->event_common_context_fc);
  76         bt_object_pool_finalize(&stream_class->event_header_field_pool);
  77         bt_object_pool_finalize(&stream_class->packet_context_field_pool);
  78         g_free(stream_class);
  79 }
  80
  81 static
  82 void free_field_wrapper(struct bt_field_wrapper *field_wrapper,
  83                 struct bt_stream_class *stream_class)
  84 {
  85         bt_field_wrapper_destroy((void *) field_wrapper);
  86 }
  87
  88 BT_ASSERT_PRE_FUNC
  89 static
  90 bool stream_class_id_is_unique(struct bt_trace *trace, uint64_t id)
  91 {
  92         uint64_t i;
  93         bool is_unique = true;
  94
  95         for (i = 0; i < trace->stream_classes->len; i++) {
  96                 struct bt_stream_class *sc =
  97                         trace->stream_classes->pdata[i];
  98
  99                 if (sc->id == id) {
 100                         is_unique = false;
 101                         goto end;
 102                 }
 103         }
 104
 105 end:
 106         return is_unique;
 107 }
 108
 109 static
 110 struct bt_stream_class *create_stream_class_with_id(struct bt_trace *trace,
 111                 uint64_t id)
 112 {
 113         struct bt_stream_class *stream_class = NULL;
 114         int ret;
 115
 116         BT_ASSERT(trace);
 117         BT_ASSERT_PRE(stream_class_id_is_unique(trace, id),
 118                 "Duplicate stream class ID: %![trace-]+t, id=%" PRIu64,
 119                 trace, id);
 120         BT_LIB_LOGD("Creating stream class object: %![trace-]+t, id=%" PRIu64,
 121                 trace, id);
 122         stream_class = g_new0(struct bt_stream_class, 1);
 123         if (!stream_class) {
 124                 BT_LOGE_STR("Failed to allocate one stream class.");
 125                 goto error;
 126         }
 127
 128         bt_object_init_shared_with_parent(&stream_class->base,
 129                 destroy_stream_class);
 130
 131         stream_class->name.str = g_string_new(NULL);
 132         if (!stream_class->name.str) {
 133                 BT_LOGE_STR("Failed to allocate a GString.");
 134                 ret = -1;
 135                 goto end;
 136         }
 137
 138         stream_class->id = id;
 139         stream_class->assigns_automatic_event_class_id = true;
 140         stream_class->assigns_automatic_stream_id = true;
 141         stream_class->event_classes = g_ptr_array_new_with_free_func(
 142                 (GDestroyNotify) bt_object_try_spec_release);
 143         if (!stream_class->event_classes) {
 144                 BT_LOGE_STR("Failed to allocate a GPtrArray.");
 145                 goto error;
 146         }
 147
 148         ret = bt_object_pool_initialize(&stream_class->event_header_field_pool,
 149                 (bt_object_pool_new_object_func) bt_field_wrapper_new,
 150                 (bt_object_pool_destroy_object_func) free_field_wrapper,
 151                 stream_class);
 152         if (ret) {
 153                 BT_LOGE("Failed to initialize event header field pool: ret=%d",
 154                         ret);
 155                 goto error;
 156         }
 157
 158         ret = bt_object_pool_initialize(&stream_class->packet_context_field_pool,
 159                 (bt_object_pool_new_object_func) bt_field_wrapper_new,
 160                 (bt_object_pool_destroy_object_func) free_field_wrapper,
 161                 stream_class);
 162         if (ret) {
 163                 BT_LOGE("Failed to initialize packet context field pool: ret=%d",
 164                         ret);
 165                 goto error;
 166         }
 167
 168         bt_object_set_parent(&stream_class->base, &trace->base);
 169         g_ptr_array_add(trace->stream_classes, stream_class);
 170         bt_trace_freeze(trace);
 171         BT_LIB_LOGD("Created stream class object: %!+S", stream_class);
 172         goto end;
 173
 174 error:
 175         BT_OBJECT_PUT_REF_AND_RESET(stream_class);
 176
 177 end:
 178         return stream_class;
 179 }
 180
 181 struct bt_private_stream_class *bt_private_stream_class_create(
 182                 struct bt_private_trace *priv_trace)
 183 {
 184         struct bt_trace *trace = (void *) priv_trace;
 185
 186         BT_ASSERT_PRE_NON_NULL(trace, "Trace");
 187         BT_ASSERT_PRE(trace->assigns_automatic_stream_class_id,
 188                 "Trace does not automatically assigns stream class IDs: "
 189                 "%![sc-]+t", trace);
 190         return (void *) create_stream_class_with_id(trace,
 191                 (uint64_t) trace->stream_classes->len);
 192 }
 193
 194 struct bt_private_stream_class *bt_private_stream_class_create_with_id(
 195                 struct bt_private_trace *priv_trace, uint64_t id)
 196 {
 197         struct bt_trace *trace = (void *) priv_trace;
 198
 199         BT_ASSERT_PRE_NON_NULL(trace, "Trace");
 200         BT_ASSERT_PRE(!trace->assigns_automatic_stream_class_id,
 201                 "Trace automatically assigns stream class IDs: "
 202                 "%![sc-]+t", trace);
 203         return (void *) create_stream_class_with_id(trace, id);
 204 }
 205
 206 struct bt_trace *bt_stream_class_borrow_trace(struct bt_stream_class *stream_class)
 207 {
 208         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 209         return bt_stream_class_borrow_trace_inline(stream_class);
 210 }
 211
 212 struct bt_private_trace *bt_private_stream_class_borrow_trace(
 213                 struct bt_private_stream_class *stream_class)
 214 {
 215         return (void *) bt_stream_class_borrow_trace((void *) stream_class);
 216 }
 217
 218 const char *bt_stream_class_get_name(struct bt_stream_class *stream_class)
 219 {
 220         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 221         return stream_class->name.value;
 222 }
 223
 224 int bt_private_stream_class_set_name(
 225                 struct bt_private_stream_class *priv_stream_class,
 226                 const char *name)
 227 {
 228         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 229
 230         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 231         BT_ASSERT_PRE_NON_NULL(name, "Name");
 232         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 233         g_string_assign(stream_class->name.str, name);
 234         stream_class->name.value = stream_class->name.str->str;
 235         BT_LIB_LOGV("Set stream class's name: %!+S", stream_class);
 236         return 0;
 237 }
 238
 239 uint64_t bt_stream_class_get_id(struct bt_stream_class *stream_class)
 240 {
 241         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 242         return stream_class->id;
 243 }
 244
 245 uint64_t bt_stream_class_get_event_class_count(
 246                 struct bt_stream_class *stream_class)
 247 {
 248         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 249         return (uint64_t) stream_class->event_classes->len;
 250 }
 251
 252 struct bt_event_class *bt_stream_class_borrow_event_class_by_index(
 253                 struct bt_stream_class *stream_class, uint64_t index)
 254 {
 255         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 256         BT_ASSERT_PRE_VALID_INDEX(index, stream_class->event_classes->len);
 257         return g_ptr_array_index(stream_class->event_classes, index);
 258 }
 259
 260 struct bt_private_event_class *
 261 bt_private_stream_class_borrow_private_event_class_by_index(
 262                 struct bt_private_stream_class *stream_class, uint64_t index)
 263 {
 264         return (void *) bt_stream_class_borrow_event_class_by_index(
 265                 (void *) stream_class, index);
 266 }
 267
 268 struct bt_event_class *bt_stream_class_borrow_event_class_by_id(
 269                 struct bt_stream_class *stream_class, uint64_t id)
 270 {
 271         struct bt_event_class *event_class = NULL;
 272         uint64_t i;
 273
 274         BT_ASSERT_PRE_NON_NULL(stream_class, "Trace");
 275
 276         for (i = 0; i < stream_class->event_classes->len; i++) {
 277                 struct bt_event_class *event_class_candidate =
 278                         g_ptr_array_index(stream_class->event_classes, i);
 279
 280                 if (event_class_candidate->id == id) {
 281                         event_class = event_class_candidate;
 282                         goto end;
 283                 }
 284         }
 285
 286 end:
 287         return event_class;
 288 }
 289
 290 struct bt_private_event_class *
 291 bt_private_stream_class_borrow_private_event_class_by_id(
 292                 struct bt_private_stream_class *stream_class, uint64_t id)
 293 {
 294         return (void *) bt_stream_class_borrow_event_class_by_id(
 295                 (void *) stream_class, id);
 296 }
 297
 298 struct bt_field_class *bt_stream_class_borrow_packet_context_field_class(
 299                 struct bt_stream_class *stream_class)
 300 {
 301         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 302         return stream_class->packet_context_fc;
 303 }
 304
 305 struct bt_private_field_class *
 306 bt_private_stream_class_borrow_packet_context_private_field_class(
 307                 struct bt_private_stream_class *stream_class)
 308 {
 309         return (void *) bt_stream_class_borrow_packet_context_field_class(
 310                 (void *) stream_class);
 311 }
 312
 313 int bt_private_stream_class_set_packet_context_private_field_class(
 314                 struct bt_private_stream_class *priv_stream_class,
 315                 struct bt_private_field_class *priv_field_class)
 316 {
 317         int ret;
 318         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 319         struct bt_field_class *field_class = (void *) priv_field_class;
 320         struct bt_resolve_field_path_context resolve_ctx = {
 321                 .packet_header = NULL,
 322                 .packet_context = field_class,
 323                 .event_header = NULL,
 324                 .event_common_context = NULL,
 325                 .event_specific_context = NULL,
 326                 .event_payload = NULL,
 327         };
 328
 329         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 330         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 331         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 332         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 333                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 334                 "Packet context field classe is not a structure field classe: %!+F",
 335                 field_class);
 336         resolve_ctx.packet_header =
 337                 bt_stream_class_borrow_trace_inline(stream_class)->packet_header_fc;
 338         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 339         if (ret) {
 340                 goto end;
 341         }
 342
 343         bt_field_class_make_part_of_trace(field_class);
 344         bt_object_put_ref(stream_class->packet_context_fc);
 345         stream_class->packet_context_fc = bt_object_get_ref(field_class);
 346         bt_field_class_freeze(field_class);
 347         BT_LIB_LOGV("Set stream class's packet context field classe: %!+S",
 348                 stream_class);
 349
 350 end:
 351         return ret;
 352 }
 353
 354 struct bt_field_class *bt_stream_class_borrow_event_header_field_class(
 355                 struct bt_stream_class *stream_class)
 356 {
 357         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 358         return stream_class->event_header_fc;
 359 }
 360
 361 struct bt_private_field_class *
 362 bt_private_stream_class_borrow_event_header_private_field_class(
 363                 struct bt_private_stream_class *stream_class)
 364 {
 365         return (void *) bt_stream_class_borrow_event_header_field_class(
 366                 (void *) stream_class);
 367 }
 368
 369 int bt_private_stream_class_set_event_header_private_field_class(
 370                 struct bt_private_stream_class *priv_stream_class,
 371                 struct bt_private_field_class *priv_field_class)
 372 {
 373         int ret;
 374         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 375         struct bt_field_class *field_class = (void *) priv_field_class;
 376         struct bt_resolve_field_path_context resolve_ctx = {
 377                 .packet_header = NULL,
 378                 .packet_context = NULL,
 379                 .event_header = field_class,
 380                 .event_common_context = NULL,
 381                 .event_specific_context = NULL,
 382                 .event_payload = NULL,
 383         };
 384
 385         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 386         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 387         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 388         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 389                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 390                 "Event header field classe is not a structure field classe: %!+F",
 391                 field_class);
 392         resolve_ctx.packet_header =
 393                 bt_stream_class_borrow_trace_inline(stream_class)->packet_header_fc;
 394         resolve_ctx.packet_context = stream_class->packet_context_fc;
 395         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 396         if (ret) {
 397                 goto end;
 398         }
 399
 400         bt_field_class_make_part_of_trace(field_class);
 401         bt_object_put_ref(stream_class->event_header_fc);
 402         stream_class->event_header_fc = bt_object_get_ref(field_class);
 403         bt_field_class_freeze(field_class);
 404         BT_LIB_LOGV("Set stream class's event header field classe: %!+S",
 405                 stream_class);
 406
 407 end:
 408         return ret;
 409 }
 410
 411 struct bt_field_class *bt_stream_class_borrow_event_common_context_field_class(
 412                 struct bt_stream_class *stream_class)
 413 {
 414         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 415         return stream_class->event_common_context_fc;
 416 }
 417
 418 struct bt_private_field_class *
 419 bt_private_stream_class_borrow_event_common_context_private_field_class(
 420                 struct bt_private_stream_class *stream_class)
 421 {
 422         return (void *) bt_stream_class_borrow_event_common_context_field_class(
 423                 (void *) stream_class);
 424 }
 425
 426 int bt_private_stream_class_set_event_common_context_private_field_class(
 427                 struct bt_private_stream_class *priv_stream_class,
 428                 struct bt_private_field_class *priv_field_class)
 429 {
 430         int ret;
 431         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 432         struct bt_field_class *field_class = (void *) priv_field_class;
 433         struct bt_resolve_field_path_context resolve_ctx = {
 434                 .packet_header = NULL,
 435                 .packet_context = NULL,
 436                 .event_header = NULL,
 437                 .event_common_context = field_class,
 438                 .event_specific_context = NULL,
 439                 .event_payload = NULL,
 440         };
 441
 442         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 443         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 444         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 445         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 446                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 447                 "Event common context field classe is not a structure field classe: %!+F",
 448                 field_class);
 449         resolve_ctx.packet_header =
 450                 bt_stream_class_borrow_trace_inline(stream_class)->packet_header_fc;
 451         resolve_ctx.packet_context = stream_class->packet_context_fc;
 452         resolve_ctx.event_header = stream_class->event_header_fc;
 453         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 454         if (ret) {
 455                 goto end;
 456         }
 457
 458         bt_field_class_make_part_of_trace(field_class);
 459         bt_object_put_ref(stream_class->event_common_context_fc);
 460         stream_class->event_common_context_fc = bt_object_get_ref(field_class);
 461         bt_field_class_freeze(field_class);
 462         BT_LIB_LOGV("Set stream class's event common context field classe: %!+S",
 463                 stream_class);
 464
 465 end:
 466         return ret;
 467 }
 468
 469 BT_HIDDEN
 470 void _bt_stream_class_freeze(struct bt_stream_class *stream_class)
 471 {
 472         /* The field classes and default clock class are already frozen */
 473         BT_ASSERT(stream_class);
 474         BT_LIB_LOGD("Freezing stream class: %!+S", stream_class);
 475         stream_class->frozen = true;
 476 }
 477
 478 int bt_private_stream_class_set_default_clock_class(
 479                 struct bt_private_stream_class *priv_stream_class,
 480                 struct bt_clock_class *clock_class)
 481 {
 482         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 483
 484         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 485         BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
 486         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 487         bt_object_put_ref(stream_class->default_clock_class);
 488         stream_class->default_clock_class = bt_object_get_ref(clock_class);
 489         bt_clock_class_freeze(clock_class);
 490         BT_LIB_LOGV("Set stream class's default clock class: %!+S",
 491                 stream_class);
 492         return 0;
 493 }
 494
 495 struct bt_clock_class *bt_stream_class_borrow_default_clock_class(
 496                 struct bt_stream_class *stream_class)
 497 {
 498         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 499         return stream_class->default_clock_class;
 500 }
 501
 502 bt_bool bt_stream_class_assigns_automatic_event_class_id(
 503                 struct bt_stream_class *stream_class)
 504 {
 505         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 506         return (bt_bool) stream_class->assigns_automatic_event_class_id;
 507 }
 508
 509 int bt_private_stream_class_set_assigns_automatic_event_class_id(
 510                 struct bt_private_stream_class *priv_stream_class,
 511                 bt_bool value)
 512 {
 513         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 514
 515         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 516         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 517         stream_class->assigns_automatic_event_class_id = (bool) value;
 518         BT_LIB_LOGV("Set stream class's automatic event class ID "
 519                 "assignment property: %!+S", stream_class);
 520         return 0;
 521 }
 522
 523 bt_bool bt_stream_class_assigns_automatic_stream_id(
 524                 struct bt_stream_class *stream_class)
 525 {
 526         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 527         return (bt_bool) stream_class->assigns_automatic_stream_id;
 528 }
 529
 530 int bt_private_stream_class_set_assigns_automatic_stream_id(
 531                 struct bt_private_stream_class *priv_stream_class,
 532                 bt_bool value)
 533 {
 534         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 535
 536         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 537         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 538         stream_class->assigns_automatic_stream_id = (bool) value;
 539         BT_LIB_LOGV("Set stream class's automatic stream ID "
 540                 "assignment property: %!+S", stream_class);
 541         return 0;
 542 }
 543
 544 bt_bool bt_stream_class_packets_have_discarded_event_counter_snapshot(
 545                 struct bt_stream_class *stream_class)
 546 {
 547         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 548         return (bt_bool) stream_class->packets_have_discarded_event_counter_snapshot;
 549 }
 550
 551 int bt_private_stream_class_set_packets_have_discarded_event_counter_snapshot(
 552                 struct bt_private_stream_class *priv_stream_class,
 553                 bt_bool value)
 554 {
 555         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 556
 557         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 558         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 559         stream_class->packets_have_discarded_event_counter_snapshot =
 560                 (bool) value;
 561         BT_LIB_LOGV("Set stream class's "
 562                 "\"packets have discarded event counter snapshot\" property: "
 563                 "%!+S", stream_class);
 564         return 0;
 565 }
 566
 567 bt_bool bt_stream_class_packets_have_packet_counter_snapshot(
 568                 struct bt_stream_class *stream_class)
 569 {
 570         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 571         return (bt_bool) stream_class->packets_have_packet_counter_snapshot;
 572 }
 573
 574 int bt_private_stream_class_set_packets_have_packet_counter_snapshot(
 575                 struct bt_private_stream_class *priv_stream_class,
 576                 bt_bool value)
 577 {
 578         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 579
 580         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 581         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 582         stream_class->packets_have_packet_counter_snapshot =
 583                 (bool) value;
 584         BT_LIB_LOGV("Set stream class's "
 585                 "\"packets have packet counter snapshot\" property: "
 586                 "%!+S", stream_class);
 587         return 0;
 588 }
 589
 590 bt_bool bt_stream_class_packets_have_default_beginning_clock_value(
 591                 struct bt_stream_class *stream_class)
 592 {
 593         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 594         return (bt_bool) stream_class->packets_have_default_beginning_cv;
 595 }
 596
 597 int bt_private_stream_class_set_packets_have_default_beginning_clock_value(
 598                 struct bt_private_stream_class *priv_stream_class,
 599                 bt_bool value)
 600 {
 601         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 602
 603         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 604         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 605         BT_ASSERT_PRE(!value || stream_class->default_clock_class,
 606                 "Stream class does not have a default clock class: %!+S",
 607                 stream_class);
 608         stream_class->packets_have_default_beginning_cv = (bool) value;
 609         BT_LIB_LOGV("Set stream class's "
 610                 "\"packets have default beginning clock value\" property: "
 611                 "%!+S", stream_class);
 612         return 0;
 613 }
 614
 615 bt_bool bt_stream_class_packets_have_default_end_clock_value(
 616                 struct bt_stream_class *stream_class)
 617 {
 618         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 619         return (bt_bool) stream_class->packets_have_default_end_cv;
 620 }
 621
 622 int bt_private_stream_class_set_packets_have_default_end_clock_value(
 623                 struct bt_private_stream_class *priv_stream_class,
 624                 bt_bool value)
 625 {
 626         struct bt_stream_class *stream_class = (void *) priv_stream_class;
 627
 628         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 629         BT_ASSERT_PRE_STREAM_CLASS_HOT(stream_class);
 630         BT_ASSERT_PRE(!value || stream_class->default_clock_class,
 631                 "Stream class does not have a default clock class: %!+S",
 632                 stream_class);
 633         stream_class->packets_have_default_end_cv = (bool) value;
 634         BT_LIB_LOGV("Set stream class's "
 635                 "\"packets have default end clock value\" property: "
 636                 "%!+S", stream_class);
 637         return 0;
 638 }
 639
 640 bt_bool bt_stream_class_default_clock_is_always_known(
 641                 struct bt_stream_class *stream_class)
 642 {
 643         /* BT_CLOCK_VALUE_STATUS_UNKNOWN is not supported as of 2.0 */
 644         return BT_TRUE;
 645 }
 646
 647 struct bt_stream_class *bt_stream_class_borrow_from_private(
 648                 struct bt_private_stream_class *priv_stream_class)
 649 {
 650         return (void *) priv_stream_class;
 651 }