src/lib/trace-ir/stream-class.c

   1 /*
   2  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   3  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #define BT_LOG_TAG "LIB/STREAM-CLASS"
  25 #include "lib/logging.h"
  26
  27 #include "lib/assert-pre.h"
  28 #include <babeltrace2/trace-ir/trace-const.h>
  29 #include "compat/compiler.h"
  30 #include "common/align.h"
  31 #include "compat/endian.h"
  32 #include "common/assert.h"
  33 #include "lib/property.h"
  34 #include <inttypes.h>
  35 #include <stdint.h>
  36 #include <stdbool.h>
  37
  38 #include "clock-class.h"
  39 #include "event-class.h"
  40 #include "field-class.h"
  41 #include "field.h"
  42 #include "field-wrapper.h"
  43 #include "resolve-field-path.h"
  44 #include "stream-class.h"
  45 #include "trace.h"
  46 #include "utils.h"
  47 #include "lib/func-status.h"
  48
  49 #define BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(_sc) \
  50         BT_ASSERT_PRE_DEV_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_AND_RESET(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                 stream_class->event_classes = NULL;
  65         }
  66
  67         if (stream_class->name.str) {
  68                 g_string_free(stream_class->name.str, TRUE);
  69                 stream_class->name.str = NULL;
  70                 stream_class->name.value = NULL;
  71         }
  72
  73         BT_LOGD_STR("Putting packet context field class.");
  74         BT_OBJECT_PUT_REF_AND_RESET(stream_class->packet_context_fc);
  75         BT_LOGD_STR("Putting event common context field class.");
  76         BT_OBJECT_PUT_REF_AND_RESET(stream_class->event_common_context_fc);
  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 static
  89 bool stream_class_id_is_unique(const struct bt_trace_class *tc, uint64_t id)
  90 {
  91         uint64_t i;
  92         bool is_unique = true;
  93
  94         for (i = 0; i < tc->stream_classes->len; i++) {
  95                 const struct bt_stream_class *sc =
  96                         tc->stream_classes->pdata[i];
  97
  98                 if (sc->id == id) {
  99                         is_unique = false;
 100                         goto end;
 101                 }
 102         }
 103
 104 end:
 105         return is_unique;
 106 }
 107
 108 static
 109 struct bt_stream_class *create_stream_class_with_id(
 110                 struct bt_trace_class *tc, uint64_t id)
 111 {
 112         struct bt_stream_class *stream_class = NULL;
 113         int ret;
 114
 115         BT_ASSERT(tc);
 116         BT_ASSERT_PRE(stream_class_id_is_unique(tc, id),
 117                 "Duplicate stream class ID: %![tc-]+T, id=%" PRIu64, tc, id);
 118         BT_LIB_LOGD("Creating stream class object: %![tc-]+T, id=%" PRIu64,
 119                 tc, id);
 120         stream_class = g_new0(struct bt_stream_class, 1);
 121         if (!stream_class) {
 122                 BT_LIB_LOGE_APPEND_CAUSE(
 123                         "Failed to allocate one stream class.");
 124                 goto error;
 125         }
 126
 127         bt_object_init_shared_with_parent(&stream_class->base,
 128                 destroy_stream_class);
 129
 130         stream_class->name.str = g_string_new(NULL);
 131         if (!stream_class->name.str) {
 132                 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GString.");
 133                 ret = -1;
 134                 goto end;
 135         }
 136
 137         stream_class->id = id;
 138         stream_class->assigns_automatic_event_class_id = true;
 139         stream_class->assigns_automatic_stream_id = true;
 140         stream_class->event_classes = g_ptr_array_new_with_free_func(
 141                 (GDestroyNotify) bt_object_try_spec_release);
 142         if (!stream_class->event_classes) {
 143                 BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate a GPtrArray.");
 144                 goto error;
 145         }
 146
 147         ret = bt_object_pool_initialize(&stream_class->packet_context_field_pool,
 148                 (bt_object_pool_new_object_func) bt_field_wrapper_new,
 149                 (bt_object_pool_destroy_object_func) free_field_wrapper,
 150                 stream_class);
 151         if (ret) {
 152                 BT_LIB_LOGE_APPEND_CAUSE(
 153                         "Failed to initialize packet context field pool: ret=%d",
 154                         ret);
 155                 goto error;
 156         }
 157
 158         bt_object_set_parent(&stream_class->base, &tc->base);
 159         g_ptr_array_add(tc->stream_classes, stream_class);
 160         bt_trace_class_freeze(tc);
 161         BT_LIB_LOGD("Created stream class object: %!+S", stream_class);
 162         goto end;
 163
 164 error:
 165         BT_OBJECT_PUT_REF_AND_RESET(stream_class);
 166
 167 end:
 168         return stream_class;
 169 }
 170
 171 struct bt_stream_class *bt_stream_class_create(struct bt_trace_class *tc)
 172 {
 173         BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
 174         BT_ASSERT_PRE(tc->assigns_automatic_stream_class_id,
 175                 "Trace class does not automatically assigns stream class IDs: "
 176                 "%![sc-]+T", tc);
 177         return create_stream_class_with_id(tc,
 178                 (uint64_t) tc->stream_classes->len);
 179 }
 180
 181 struct bt_stream_class *bt_stream_class_create_with_id(
 182                 struct bt_trace_class *tc, uint64_t id)
 183 {
 184         BT_ASSERT_PRE_NON_NULL(tc, "Trace class");
 185         BT_ASSERT_PRE(!tc->assigns_automatic_stream_class_id,
 186                 "Trace class automatically assigns stream class IDs: "
 187                 "%![sc-]+T", tc);
 188         return create_stream_class_with_id(tc, id);
 189 }
 190
 191 struct bt_trace_class *bt_stream_class_borrow_trace_class(
 192                 struct bt_stream_class *stream_class)
 193 {
 194         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 195         return bt_stream_class_borrow_trace_class_inline(stream_class);
 196 }
 197
 198 const struct bt_trace_class *bt_stream_class_borrow_trace_class_const(
 199                 const struct bt_stream_class *stream_class)
 200 {
 201         return bt_stream_class_borrow_trace_class((void *) stream_class);
 202 }
 203
 204 const char *bt_stream_class_get_name(const struct bt_stream_class *stream_class)
 205 {
 206         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 207         return stream_class->name.value;
 208 }
 209
 210 enum bt_stream_class_set_name_status bt_stream_class_set_name(
 211                 struct bt_stream_class *stream_class,
 212                 const char *name)
 213 {
 214         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 215         BT_ASSERT_PRE_NON_NULL(name, "Name");
 216         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 217         g_string_assign(stream_class->name.str, name);
 218         stream_class->name.value = stream_class->name.str->str;
 219         BT_LIB_LOGD("Set stream class's name: %!+S", stream_class);
 220         return BT_FUNC_STATUS_OK;
 221 }
 222
 223 uint64_t bt_stream_class_get_id(const struct bt_stream_class *stream_class)
 224 {
 225         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 226         return stream_class->id;
 227 }
 228
 229 uint64_t bt_stream_class_get_event_class_count(
 230                 const struct bt_stream_class *stream_class)
 231 {
 232         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 233         return (uint64_t) stream_class->event_classes->len;
 234 }
 235
 236 struct bt_event_class *bt_stream_class_borrow_event_class_by_index(
 237                 struct bt_stream_class *stream_class, uint64_t index)
 238 {
 239         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 240         BT_ASSERT_PRE_DEV_VALID_INDEX(index, stream_class->event_classes->len);
 241         return g_ptr_array_index(stream_class->event_classes, index);
 242 }
 243
 244 const struct bt_event_class *
 245 bt_stream_class_borrow_event_class_by_index_const(
 246                 const struct bt_stream_class *stream_class, uint64_t index)
 247 {
 248         return bt_stream_class_borrow_event_class_by_index(
 249                 (void *) stream_class, index);
 250 }
 251
 252 struct bt_event_class *bt_stream_class_borrow_event_class_by_id(
 253                 struct bt_stream_class *stream_class, uint64_t id)
 254 {
 255         struct bt_event_class *event_class = NULL;
 256         uint64_t i;
 257
 258         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 259
 260         for (i = 0; i < stream_class->event_classes->len; i++) {
 261                 struct bt_event_class *event_class_candidate =
 262                         g_ptr_array_index(stream_class->event_classes, i);
 263
 264                 if (event_class_candidate->id == id) {
 265                         event_class = event_class_candidate;
 266                         goto end;
 267                 }
 268         }
 269
 270 end:
 271         return event_class;
 272 }
 273
 274 const struct bt_event_class *
 275 bt_stream_class_borrow_event_class_by_id_const(
 276                 const struct bt_stream_class *stream_class, uint64_t id)
 277 {
 278         return bt_stream_class_borrow_event_class_by_id(
 279                 (void *) stream_class, id);
 280 }
 281
 282 const struct bt_field_class *
 283 bt_stream_class_borrow_packet_context_field_class_const(
 284                 const struct bt_stream_class *stream_class)
 285 {
 286         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 287         return stream_class->packet_context_fc;
 288 }
 289
 290 struct bt_field_class *
 291 bt_stream_class_borrow_packet_context_field_class(
 292                 struct bt_stream_class *stream_class)
 293 {
 294         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 295         return stream_class->packet_context_fc;
 296 }
 297
 298 enum bt_stream_class_set_field_class_status
 299 bt_stream_class_set_packet_context_field_class(
 300                 struct bt_stream_class *stream_class,
 301                 struct bt_field_class *field_class)
 302 {
 303         int ret;
 304         struct bt_resolve_field_path_context resolve_ctx = {
 305                 .packet_context = field_class,
 306                 .event_common_context = NULL,
 307                 .event_specific_context = NULL,
 308                 .event_payload = NULL,
 309         };
 310
 311         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 312         BT_ASSERT_PRE(stream_class->supports_packets,
 313                 "Stream class does not support packets: %![sc-]+S",
 314                 stream_class);
 315         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 316         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 317         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 318                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 319                 "Packet context field class is not a structure field class: %!+F",
 320                 field_class);
 321         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 322         if (ret) {
 323                 /*
 324                  * This is the only reason for which
 325                  * bt_resolve_field_paths() can fail: anything else
 326                  * would be because a precondition is not satisfied.
 327                  */
 328                 ret = BT_FUNC_STATUS_MEMORY_ERROR;
 329                 goto end;
 330         }
 331
 332         bt_field_class_make_part_of_trace_class(field_class);
 333         bt_object_put_ref(stream_class->packet_context_fc);
 334         stream_class->packet_context_fc = field_class;
 335         bt_object_get_no_null_check(stream_class->packet_context_fc);
 336         bt_field_class_freeze(field_class);
 337         BT_LIB_LOGD("Set stream class's packet context field class: %!+S",
 338                 stream_class);
 339
 340 end:
 341         return ret;
 342 }
 343
 344 const struct bt_field_class *
 345 bt_stream_class_borrow_event_common_context_field_class_const(
 346                 const struct bt_stream_class *stream_class)
 347 {
 348         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 349         return stream_class->event_common_context_fc;
 350 }
 351
 352 struct bt_field_class *
 353 bt_stream_class_borrow_event_common_context_field_class(
 354                 struct bt_stream_class *stream_class)
 355 {
 356         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 357         return stream_class->event_common_context_fc;
 358 }
 359
 360 enum bt_stream_class_set_field_class_status
 361 bt_stream_class_set_event_common_context_field_class(
 362                 struct bt_stream_class *stream_class,
 363                 struct bt_field_class *field_class)
 364 {
 365         int ret;
 366         struct bt_resolve_field_path_context resolve_ctx = {
 367                 .packet_context = NULL,
 368                 .event_common_context = field_class,
 369                 .event_specific_context = NULL,
 370                 .event_payload = NULL,
 371         };
 372
 373         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 374         BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
 375         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 376         BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
 377                 BT_FIELD_CLASS_TYPE_STRUCTURE,
 378                 "Event common context field class is not a structure field class: %!+F",
 379                 field_class);
 380         resolve_ctx.packet_context = stream_class->packet_context_fc;
 381         ret = bt_resolve_field_paths(field_class, &resolve_ctx);
 382         if (ret) {
 383                 /*
 384                  * This is the only reason for which
 385                  * bt_resolve_field_paths() can fail: anything else
 386                  * would be because a precondition is not satisfied.
 387                  */
 388                 ret = BT_FUNC_STATUS_MEMORY_ERROR;
 389                 goto end;
 390         }
 391
 392         bt_field_class_make_part_of_trace_class(field_class);
 393         bt_object_put_ref(stream_class->event_common_context_fc);
 394         stream_class->event_common_context_fc = field_class;
 395         bt_object_get_no_null_check(stream_class->event_common_context_fc);
 396         bt_field_class_freeze(field_class);
 397         BT_LIB_LOGD("Set stream class's event common context field class: %!+S",
 398                 stream_class);
 399
 400 end:
 401         return ret;
 402 }
 403
 404 BT_HIDDEN
 405 void _bt_stream_class_freeze(const struct bt_stream_class *stream_class)
 406 {
 407         /* The field classes and default clock class are already frozen */
 408         BT_ASSERT(stream_class);
 409         BT_LIB_LOGD("Freezing stream class: %!+S", stream_class);
 410         ((struct bt_stream_class *) stream_class)->frozen = true;
 411 }
 412
 413 enum bt_stream_class_set_default_clock_class_status
 414 bt_stream_class_set_default_clock_class(
 415                 struct bt_stream_class *stream_class,
 416                 struct bt_clock_class *clock_class)
 417 {
 418         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 419         BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class");
 420         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 421         bt_object_put_ref(stream_class->default_clock_class);
 422         stream_class->default_clock_class = clock_class;
 423         bt_object_get_no_null_check(stream_class->default_clock_class);
 424         bt_clock_class_freeze(clock_class);
 425         BT_LIB_LOGD("Set stream class's default clock class: %!+S",
 426                 stream_class);
 427         return BT_FUNC_STATUS_OK;
 428 }
 429
 430 struct bt_clock_class *bt_stream_class_borrow_default_clock_class(
 431                 struct bt_stream_class *stream_class)
 432 {
 433         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 434         return stream_class->default_clock_class;
 435 }
 436
 437 const struct bt_clock_class *bt_stream_class_borrow_default_clock_class_const(
 438                 const struct bt_stream_class *stream_class)
 439 {
 440         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 441         return stream_class->default_clock_class;
 442 }
 443
 444 bt_bool bt_stream_class_assigns_automatic_event_class_id(
 445                 const struct bt_stream_class *stream_class)
 446 {
 447         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 448         return (bt_bool) stream_class->assigns_automatic_event_class_id;
 449 }
 450
 451 void bt_stream_class_set_assigns_automatic_event_class_id(
 452                 struct bt_stream_class *stream_class,
 453                 bt_bool value)
 454 {
 455         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 456         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 457         stream_class->assigns_automatic_event_class_id = (bool) value;
 458         BT_LIB_LOGD("Set stream class's automatic event class ID "
 459                 "assignment property: %!+S", stream_class);
 460 }
 461
 462 bt_bool bt_stream_class_assigns_automatic_stream_id(
 463                 const struct bt_stream_class *stream_class)
 464 {
 465         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 466         return (bt_bool) stream_class->assigns_automatic_stream_id;
 467 }
 468
 469 void bt_stream_class_set_supports_discarded_events(
 470                 struct bt_stream_class *stream_class,
 471                 bt_bool supports_discarded_events,
 472                 bt_bool with_default_clock_snapshots)
 473 {
 474         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 475         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 476         BT_ASSERT_PRE(supports_discarded_events ||
 477                 !with_default_clock_snapshots,
 478                 "Discarded events cannot have default clock snapshots when "
 479                 "not supported: %!+S", stream_class);
 480         BT_ASSERT_PRE(!with_default_clock_snapshots ||
 481                 stream_class->default_clock_class,
 482                 "Stream class has no default clock class: %!+S", stream_class);
 483         stream_class->supports_discarded_events =
 484                 (bool) supports_discarded_events;
 485         stream_class->discarded_events_have_default_clock_snapshots =
 486                 (bool) with_default_clock_snapshots;
 487         BT_LIB_LOGD("Set stream class's discarded events support property: "
 488                 "%!+S", stream_class);
 489 }
 490
 491 bt_bool bt_stream_class_supports_discarded_events(
 492                 const struct bt_stream_class *stream_class)
 493 {
 494         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 495         return (bt_bool) stream_class->supports_discarded_events;
 496 }
 497
 498 bt_bool bt_stream_class_discarded_events_have_default_clock_snapshots(
 499                 const struct bt_stream_class *stream_class)
 500 {
 501         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 502         return (bt_bool) stream_class->discarded_events_have_default_clock_snapshots;
 503 }
 504
 505 void bt_stream_class_set_supports_discarded_packets(
 506                 struct bt_stream_class *stream_class,
 507                 bt_bool supports_discarded_packets,
 508                 bt_bool with_default_clock_snapshots)
 509 {
 510         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 511         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 512         BT_ASSERT_PRE(!supports_discarded_packets ||
 513                 stream_class->supports_packets,
 514                 "Stream class does not support packets: %!+S",
 515                 stream_class);
 516         BT_ASSERT_PRE(supports_discarded_packets ||
 517                 !with_default_clock_snapshots,
 518                 "Discarded packets cannot have default clock snapshots when "
 519                 "not supported: %!+S", stream_class);
 520         BT_ASSERT_PRE(!with_default_clock_snapshots ||
 521                 stream_class->default_clock_class,
 522                 "Stream class has no default clock class: %!+S", stream_class);
 523         stream_class->supports_discarded_packets =
 524                 (bool) supports_discarded_packets;
 525         stream_class->discarded_packets_have_default_clock_snapshots =
 526                 (bool) with_default_clock_snapshots;
 527         BT_LIB_LOGD("Set stream class's discarded packets support property: "
 528                 "%!+S", stream_class);
 529 }
 530
 531 bt_bool bt_stream_class_supports_discarded_packets(
 532                 const struct bt_stream_class *stream_class)
 533 {
 534         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 535         return (bt_bool) stream_class->supports_discarded_packets;
 536 }
 537
 538 bt_bool bt_stream_class_discarded_packets_have_default_clock_snapshots(
 539                 const struct bt_stream_class *stream_class)
 540 {
 541         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 542         return (bt_bool) stream_class->discarded_packets_have_default_clock_snapshots;
 543 }
 544
 545 void bt_stream_class_set_supports_packets(
 546                 struct bt_stream_class *stream_class,
 547                 bt_bool supports_packets,
 548                 bt_bool with_beginning_default_clock_snapshot,
 549                 bt_bool with_end_default_clock_snapshot)
 550 {
 551         bt_bool with_default_clock_snapshot =
 552                 with_beginning_default_clock_snapshot ||
 553                 with_end_default_clock_snapshot;
 554         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 555         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 556         BT_ASSERT_PRE(supports_packets ||
 557                 !with_default_clock_snapshot,
 558                 "Packets cannot have default clock snapshots when "
 559                 "not supported: %!+S", stream_class);
 560         BT_ASSERT_PRE(!with_default_clock_snapshot ||
 561                 stream_class->default_clock_class,
 562                 "Stream class has no default clock class: %!+S", stream_class);
 563         BT_ASSERT_PRE(supports_packets || !stream_class->packet_context_fc,
 564                 "Stream class already has a packet context field class: %!+S",
 565                 stream_class);
 566         BT_ASSERT_PRE(supports_packets ||
 567                 !stream_class->supports_discarded_packets,
 568                 "Stream class already supports discarded packets: %!+S",
 569                 stream_class);
 570         stream_class->supports_packets = (bool) supports_packets;
 571         stream_class->packets_have_beginning_default_clock_snapshot =
 572                 (bool) with_beginning_default_clock_snapshot;
 573         stream_class->packets_have_end_default_clock_snapshot =
 574                 (bool) with_end_default_clock_snapshot;
 575         BT_LIB_LOGD("Set stream class's packets support property: %!+S",
 576                 stream_class);
 577 }
 578
 579 bt_bool bt_stream_class_supports_packets(
 580                 const struct bt_stream_class *stream_class)
 581 {
 582         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 583         return (bt_bool) stream_class->supports_packets;
 584 }
 585
 586 bt_bool bt_stream_class_packets_have_beginning_default_clock_snapshot(
 587                 const struct bt_stream_class *stream_class)
 588 {
 589         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 590         return (bt_bool) stream_class->packets_have_beginning_default_clock_snapshot;
 591 }
 592
 593 bt_bool bt_stream_class_packets_have_end_default_clock_snapshot(
 594                 const struct bt_stream_class *stream_class)
 595 {
 596         BT_ASSERT_PRE_DEV_NON_NULL(stream_class, "Stream class");
 597         return (bt_bool) stream_class->packets_have_end_default_clock_snapshot;
 598 }
 599
 600 void bt_stream_class_set_assigns_automatic_stream_id(
 601                 struct bt_stream_class *stream_class,
 602                 bt_bool value)
 603 {
 604         BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
 605         BT_ASSERT_PRE_DEV_STREAM_CLASS_HOT(stream_class);
 606         stream_class->assigns_automatic_stream_id = (bool) value;
 607         BT_LIB_LOGD("Set stream class's automatic stream ID "
 608                 "assignment property: %!+S", stream_class);
 609 }
 610
 611 void bt_stream_class_get_ref(const struct bt_stream_class *stream_class)
 612 {
 613         bt_object_get_ref(stream_class);
 614 }
 615
 616 void bt_stream_class_put_ref(const struct bt_stream_class *stream_class)
 617 {
 618         bt_object_put_ref(stream_class);
 619 }