lib/graph/component.c

   1 /*
   2  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   3  * Copyright 2015 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 "COMP"
  25 #include <babeltrace2/lib-logging-internal.h>
  26
  27 #include <babeltrace2/assert-internal.h>
  28 #include <babeltrace2/assert-pre-internal.h>
  29 #include <babeltrace2/graph/self-component.h>
  30 #include <babeltrace2/graph/component-const.h>
  31 #include <babeltrace2/graph/component-source-const.h>
  32 #include <babeltrace2/graph/component-filter-const.h>
  33 #include <babeltrace2/graph/component-sink-const.h>
  34 #include <babeltrace2/graph/component-internal.h>
  35 #include <babeltrace2/graph/component-class-internal.h>
  36 #include <babeltrace2/graph/component-source-internal.h>
  37 #include <babeltrace2/graph/component-filter-internal.h>
  38 #include <babeltrace2/graph/component-sink-internal.h>
  39 #include <babeltrace2/graph/connection-internal.h>
  40 #include <babeltrace2/graph/graph-internal.h>
  41 #include <babeltrace2/graph/message-iterator-internal.h>
  42 #include <babeltrace2/graph/port-internal.h>
  43 #include <babeltrace2/babeltrace-internal.h>
  44 #include <babeltrace2/compiler-internal.h>
  45 #include <babeltrace2/types.h>
  46 #include <babeltrace2/value.h>
  47 #include <babeltrace2/value-internal.h>
  48 #include <stdint.h>
  49 #include <inttypes.h>
  50
  51 static
  52 struct bt_component * (* const component_create_funcs[])(
  53                 const struct bt_component_class *) = {
  54         [BT_COMPONENT_CLASS_TYPE_SOURCE] = bt_component_source_create,
  55         [BT_COMPONENT_CLASS_TYPE_SINK] = bt_component_sink_create,
  56         [BT_COMPONENT_CLASS_TYPE_FILTER] = bt_component_filter_create,
  57 };
  58
  59 static
  60 void (*component_destroy_funcs[])(struct bt_component *) = {
  61         [BT_COMPONENT_CLASS_TYPE_SOURCE] = bt_component_source_destroy,
  62         [BT_COMPONENT_CLASS_TYPE_SINK] = bt_component_sink_destroy,
  63         [BT_COMPONENT_CLASS_TYPE_FILTER] = bt_component_filter_destroy,
  64 };
  65
  66 static
  67 void finalize_component(struct bt_component *comp)
  68 {
  69         typedef void (*method_t)(void *);
  70
  71         method_t method = NULL;
  72
  73         BT_ASSERT(comp);
  74
  75         switch (comp->class->type) {
  76         case BT_COMPONENT_CLASS_TYPE_SOURCE:
  77         {
  78                 struct bt_component_class_source *src_cc = (void *) comp->class;
  79
  80                 method = (method_t) src_cc->methods.finalize;
  81                 break;
  82         }
  83         case BT_COMPONENT_CLASS_TYPE_FILTER:
  84         {
  85                 struct bt_component_class_filter *flt_cc = (void *) comp->class;
  86
  87                 method = (method_t) flt_cc->methods.finalize;
  88                 break;
  89         }
  90         case BT_COMPONENT_CLASS_TYPE_SINK:
  91         {
  92                 struct bt_component_class_sink *sink_cc = (void *) comp->class;
  93
  94                 method = (method_t) sink_cc->methods.finalize;
  95                 break;
  96         }
  97         default:
  98                 abort();
  99         }
 100
 101         if (method) {
 102                 BT_LIB_LOGD("Calling user's finalization method: "
 103                         "%![comp-]+c", comp);
 104                 method(comp);
 105         }
 106 }
 107
 108 static
 109 void destroy_component(struct bt_object *obj)
 110 {
 111         struct bt_component *component = NULL;
 112         int i;
 113
 114         if (!obj) {
 115                 return;
 116         }
 117
 118         /*
 119          * The component's reference count is 0 if we're here. Increment
 120          * it to avoid a double-destroy (possibly infinitely recursive).
 121          * This could happen for example if the component's finalization
 122          * function does bt_object_get_ref() (or anything that causes
 123          * bt_object_get_ref() to be called) on itself (ref. count goes
 124          * from 0 to 1), and then bt_object_put_ref(): the reference
 125          * count would go from 1 to 0 again and this function would be
 126          * called again.
 127          */
 128         obj->ref_count++;
 129         component = container_of(obj, struct bt_component, base);
 130         BT_LIB_LOGD("Destroying component: %![comp-]+c, %![graph-]+g",
 131                 component, bt_component_borrow_graph(component));
 132
 133         /* Call destroy listeners in reverse registration order */
 134         BT_LOGD_STR("Calling destroy listeners.");
 135
 136         for (i = component->destroy_listeners->len - 1; i >= 0; i--) {
 137                 struct bt_component_destroy_listener *listener =
 138                         &g_array_index(component->destroy_listeners,
 139                                 struct bt_component_destroy_listener, i);
 140
 141                 listener->func(component, listener->data);
 142         }
 143
 144         /*
 145          * User data is destroyed first, followed by the concrete
 146          * component instance. Do not finalize if the component's user
 147          * initialization method failed in the first place.
 148          */
 149         if (component->initialized) {
 150                 finalize_component(component);
 151         }
 152
 153         if (component->destroy) {
 154                 BT_LOGD_STR("Destroying type-specific data.");
 155                 component->destroy(component);
 156         }
 157
 158         if (component->input_ports) {
 159                 BT_LOGD_STR("Destroying input ports.");
 160                 g_ptr_array_free(component->input_ports, TRUE);
 161                 component->input_ports = NULL;
 162         }
 163
 164         if (component->output_ports) {
 165                 BT_LOGD_STR("Destroying output ports.");
 166                 g_ptr_array_free(component->output_ports, TRUE);
 167                 component->output_ports = NULL;
 168         }
 169
 170         if (component->destroy_listeners) {
 171                 g_array_free(component->destroy_listeners, TRUE);
 172                 component->destroy_listeners = NULL;
 173         }
 174
 175         if (component->name) {
 176                 g_string_free(component->name, TRUE);
 177                 component->name = NULL;
 178         }
 179
 180         BT_LOGD_STR("Putting component class.");
 181         BT_OBJECT_PUT_REF_AND_RESET(component->class);
 182         g_free(component);
 183 }
 184
 185 enum bt_component_class_type bt_component_get_class_type(
 186                 const struct bt_component *component)
 187 {
 188         BT_ASSERT_PRE_NON_NULL(component, "Component");
 189         return component->class->type;
 190 }
 191
 192 static
 193 enum bt_self_component_status add_port(
 194                 struct bt_component *component, GPtrArray *ports,
 195                 enum bt_port_type port_type, const char *name, void *user_data,
 196                 struct bt_port **port)
 197 {
 198         struct bt_port *new_port = NULL;
 199         struct bt_graph *graph = NULL;
 200         enum bt_self_component_status status;
 201
 202         BT_ASSERT_PRE_NON_NULL(component, "Component");
 203         BT_ASSERT_PRE_NON_NULL(name, "Name");
 204         BT_ASSERT_PRE(strlen(name) > 0, "Name is empty");
 205         graph = bt_component_borrow_graph(component);
 206         BT_ASSERT_PRE(graph && !bt_graph_is_canceled(graph),
 207                 "Component's graph is canceled: %![comp-]+c, %![graph-]+g",
 208                 component, graph);
 209         BT_ASSERT_PRE(
 210                 graph->config_state == BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
 211                 "Component's graph is already configured: "
 212                 "%![comp-]+c, %![graph-]+g", component, graph);
 213
 214         // TODO: Validate that the name is not already used.
 215
 216         BT_LIB_LOGD("Adding port to component: %![comp-]+c, "
 217                 "port-type=%s, port-name=\"%s\"", component,
 218                 bt_port_type_string(port_type), name);
 219
 220         new_port = bt_port_create(component, port_type, name, user_data);
 221         if (!new_port) {
 222                 BT_LOGE_STR("Cannot create port object.");
 223                 status = BT_SELF_COMPONENT_STATUS_NOMEM;
 224                 goto error;
 225         }
 226
 227         /*
 228          * No name clash, add the port.
 229          * The component is now the port's parent; it should _not_
 230          * hold a reference to the port since the port's lifetime
 231          * is now protected by the component's own lifetime.
 232          */
 233         g_ptr_array_add(ports, new_port);
 234
 235         /*
 236          * Notify the graph's creator that a new port was added.
 237          */
 238         graph = bt_component_borrow_graph(component);
 239         if (graph) {
 240                 enum bt_graph_listener_status listener_status;
 241
 242                 listener_status = bt_graph_notify_port_added(graph, new_port);
 243                 if (listener_status != BT_GRAPH_LISTENER_STATUS_OK) {
 244                         bt_graph_make_faulty(graph);
 245                         status = listener_status;
 246                         goto error;
 247                 }
 248         }
 249
 250         BT_LIB_LOGD("Created and added port to component: "
 251                 "%![comp-]+c, %![port-]+p", component, new_port);
 252
 253         *port = new_port;
 254         status = BT_SELF_COMPONENT_STATUS_OK;
 255
 256         goto end;
 257 error:
 258         /*
 259          * We need to release the reference that we would otherwise have
 260          * returned to the caller.
 261          */
 262         BT_PORT_PUT_REF_AND_RESET(new_port);
 263
 264 end:
 265         return status;
 266 }
 267
 268 BT_HIDDEN
 269 uint64_t bt_component_get_input_port_count(const struct bt_component *comp)
 270 {
 271         BT_ASSERT_PRE_NON_NULL(comp, "Component");
 272         return (uint64_t) comp->input_ports->len;
 273 }
 274
 275 BT_HIDDEN
 276 uint64_t bt_component_get_output_port_count(const struct bt_component *comp)
 277 {
 278         BT_ASSERT_PRE_NON_NULL(comp, "Component");
 279         return (uint64_t) comp->output_ports->len;
 280 }
 281
 282 BT_HIDDEN
 283 int bt_component_create(struct bt_component_class *component_class,
 284                 const char *name, struct bt_component **user_component)
 285 {
 286         int ret = 0;
 287         struct bt_component *component = NULL;
 288         enum bt_component_class_type type;
 289
 290         BT_ASSERT(user_component);
 291         BT_ASSERT(component_class);
 292         BT_ASSERT(name);
 293         type = bt_component_class_get_type(component_class);
 294         BT_LIB_LOGD("Creating empty component from component class: %![cc-]+C, "
 295                 "comp-name=\"%s\"", component_class, name);
 296         component = component_create_funcs[type](component_class);
 297         if (!component) {
 298                 BT_LOGE_STR("Cannot create specific component object.");
 299                 ret = -1;
 300                 goto end;
 301         }
 302
 303         bt_object_init_shared_with_parent(&component->base, destroy_component);
 304         component->class = component_class;
 305         bt_object_get_no_null_check(component->class);
 306         component->destroy = component_destroy_funcs[type];
 307         component->name = g_string_new(name);
 308         if (!component->name) {
 309                 BT_LOGE_STR("Failed to allocate one GString.");
 310                 ret = -1;
 311                 goto end;
 312         }
 313
 314         component->input_ports = g_ptr_array_new_with_free_func(
 315                 (GDestroyNotify) bt_object_try_spec_release);
 316         if (!component->input_ports) {
 317                 BT_LOGE_STR("Failed to allocate one GPtrArray.");
 318                 ret = -1;
 319                 goto end;
 320         }
 321
 322         component->output_ports = g_ptr_array_new_with_free_func(
 323                 (GDestroyNotify) bt_object_try_spec_release);
 324         if (!component->output_ports) {
 325                 BT_LOGE_STR("Failed to allocate one GPtrArray.");
 326                 ret = -1;
 327                 goto end;
 328         }
 329
 330         component->destroy_listeners = g_array_new(FALSE, TRUE,
 331                 sizeof(struct bt_component_destroy_listener));
 332         if (!component->destroy_listeners) {
 333                 BT_LOGE_STR("Failed to allocate one GArray.");
 334                 ret = -1;
 335                 goto end;
 336         }
 337
 338         BT_LIB_LOGD("Created empty component from component class: "
 339                 "%![cc-]+C, %![comp-]+c", component_class, component);
 340         BT_OBJECT_MOVE_REF(*user_component, component);
 341
 342 end:
 343         bt_object_put_ref(component);
 344         return ret;
 345 }
 346
 347 const char *bt_component_get_name(const struct bt_component *component)
 348 {
 349         BT_ASSERT_PRE_NON_NULL(component, "Component");
 350         return component->name->str;
 351 }
 352
 353 const struct bt_component_class *bt_component_borrow_class_const(
 354                 const struct bt_component *component)
 355 {
 356         BT_ASSERT_PRE_NON_NULL(component, "Component");
 357         return component->class;
 358 }
 359
 360 void *bt_self_component_get_data(const struct bt_self_component *self_comp)
 361 {
 362         struct bt_component *component = (void *) self_comp;
 363
 364         BT_ASSERT_PRE_NON_NULL(component, "Component");
 365         return component->user_data;
 366 }
 367
 368 void bt_self_component_set_data(struct bt_self_component *self_comp,
 369                 void *data)
 370 {
 371         struct bt_component *component = (void *) self_comp;
 372
 373         BT_ASSERT_PRE_NON_NULL(component, "Component");
 374         component->user_data = data;
 375         BT_LIB_LOGV("Set component's user data: %!+c", component);
 376 }
 377
 378 BT_HIDDEN
 379 void bt_component_set_graph(struct bt_component *component,
 380                 struct bt_graph *graph)
 381 {
 382         bt_object_set_parent(&component->base,
 383                 graph ? &graph->base : NULL);
 384 }
 385
 386 bt_bool bt_component_graph_is_canceled(const struct bt_component *component)
 387 {
 388         return bt_graph_is_canceled(
 389                 (void *) bt_object_borrow_parent(&component->base));
 390 }
 391
 392 static
 393 struct bt_port *borrow_port_by_name(GPtrArray *ports,
 394                 const char *name)
 395 {
 396         uint64_t i;
 397         struct bt_port *ret_port = NULL;
 398
 399         BT_ASSERT(name);
 400
 401         for (i = 0; i < ports->len; i++) {
 402                 struct bt_port *port = g_ptr_array_index(ports, i);
 403
 404                 if (!strcmp(name, port->name->str)) {
 405                         ret_port = port;
 406                         break;
 407                 }
 408         }
 409
 410         return ret_port;
 411 }
 412
 413 BT_HIDDEN
 414 struct bt_port_input *bt_component_borrow_input_port_by_name(
 415                 struct bt_component *comp, const char *name)
 416 {
 417         BT_ASSERT(comp);
 418         return (void *) borrow_port_by_name(comp->input_ports, name);
 419 }
 420
 421 BT_HIDDEN
 422 struct bt_port_output *bt_component_borrow_output_port_by_name(
 423                 struct bt_component *comp, const char *name)
 424 {
 425         BT_ASSERT_PRE_NON_NULL(comp, "Component");
 426         return (void *)
 427                 borrow_port_by_name(comp->output_ports, name);
 428 }
 429
 430 static
 431 struct bt_port *borrow_port_by_index(GPtrArray *ports, uint64_t index)
 432 {
 433         BT_ASSERT(index < ports->len);
 434         return g_ptr_array_index(ports, index);
 435 }
 436
 437 BT_HIDDEN
 438 struct bt_port_input *bt_component_borrow_input_port_by_index(
 439                 struct bt_component *comp, uint64_t index)
 440 {
 441         BT_ASSERT_PRE_NON_NULL(comp, "Component");
 442         BT_ASSERT_PRE_VALID_INDEX(index, comp->input_ports->len);
 443         return (void *)
 444                 borrow_port_by_index(comp->input_ports, index);
 445 }
 446
 447 BT_HIDDEN
 448 struct bt_port_output *bt_component_borrow_output_port_by_index(
 449                 struct bt_component *comp, uint64_t index)
 450 {
 451         BT_ASSERT_PRE_NON_NULL(comp, "Component");
 452         BT_ASSERT_PRE_VALID_INDEX(index, comp->output_ports->len);
 453         return (void *)
 454                 borrow_port_by_index(comp->output_ports, index);
 455 }
 456
 457 BT_HIDDEN
 458 enum bt_self_component_status bt_component_add_input_port(
 459                 struct bt_component *component, const char *name,
 460                 void *user_data, struct bt_port **port)
 461 {
 462         /* add_port() logs details */
 463         return add_port(component, component->input_ports,
 464                 BT_PORT_TYPE_INPUT, name, user_data, port);
 465 }
 466
 467 BT_HIDDEN
 468 enum bt_self_component_status bt_component_add_output_port(
 469                 struct bt_component *component, const char *name,
 470                 void *user_data, struct bt_port **port)
 471 {
 472         /* add_port() logs details */
 473         return add_port(component, component->output_ports,
 474                 BT_PORT_TYPE_OUTPUT, name, user_data, port);
 475 }
 476
 477 BT_HIDDEN
 478 enum bt_self_component_status bt_component_accept_port_connection(
 479                 struct bt_component *comp, struct bt_port *self_port,
 480                 struct bt_port *other_port)
 481 {
 482         typedef enum bt_self_component_status (*method_t)(
 483                 void *, void *, const void *);
 484
 485         enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
 486         method_t method = NULL;
 487
 488         BT_ASSERT(comp);
 489         BT_ASSERT(self_port);
 490         BT_ASSERT(other_port);
 491
 492         switch (comp->class->type) {
 493         case BT_COMPONENT_CLASS_TYPE_SOURCE:
 494         {
 495                 struct bt_component_class_source *src_cc = (void *) comp->class;
 496
 497                 switch (self_port->type) {
 498                 case BT_PORT_TYPE_OUTPUT:
 499                         method = (method_t) src_cc->methods.accept_output_port_connection;
 500                         break;
 501                 default:
 502                         abort();
 503                 }
 504
 505                 break;
 506         }
 507         case BT_COMPONENT_CLASS_TYPE_FILTER:
 508         {
 509                 struct bt_component_class_filter *flt_cc = (void *) comp->class;
 510
 511                 switch (self_port->type) {
 512                 case BT_PORT_TYPE_INPUT:
 513                         method = (method_t) flt_cc->methods.accept_input_port_connection;
 514                         break;
 515                 case BT_PORT_TYPE_OUTPUT:
 516                         method = (method_t) flt_cc->methods.accept_output_port_connection;
 517                         break;
 518                 default:
 519                         abort();
 520                 }
 521
 522                 break;
 523         }
 524         case BT_COMPONENT_CLASS_TYPE_SINK:
 525         {
 526                 struct bt_component_class_sink *sink_cc = (void *) comp->class;
 527
 528                 switch (self_port->type) {
 529                 case BT_PORT_TYPE_INPUT:
 530                         method = (method_t) sink_cc->methods.accept_input_port_connection;
 531                         break;
 532                 default:
 533                         abort();
 534                 }
 535
 536                 break;
 537         }
 538         default:
 539                 abort();
 540         }
 541
 542         if (method) {
 543                 BT_LIB_LOGD("Calling user's \"accept port connection\" method: "
 544                         "%![comp-]+c, %![self-port-]+p, %![other-port-]+p",
 545                         comp, self_port, other_port);
 546                 status = method(comp, self_port, (void *) other_port);
 547                 BT_LOGD("User method returned: status=%s",
 548                         bt_self_component_status_string(status));
 549         }
 550
 551         return status;
 552 }
 553
 554 BT_HIDDEN
 555 enum bt_self_component_status bt_component_port_connected(
 556                 struct bt_component *comp, struct bt_port *self_port,
 557                 struct bt_port *other_port)
 558 {
 559         typedef enum bt_self_component_status (*method_t)(
 560                 void *, void *, const void *);
 561
 562         enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
 563         method_t method = NULL;
 564
 565         BT_ASSERT(comp);
 566         BT_ASSERT(self_port);
 567         BT_ASSERT(other_port);
 568
 569         switch (comp->class->type) {
 570         case BT_COMPONENT_CLASS_TYPE_SOURCE:
 571         {
 572                 struct bt_component_class_source *src_cc = (void *) comp->class;
 573
 574                 switch (self_port->type) {
 575                 case BT_PORT_TYPE_OUTPUT:
 576                         method = (method_t) src_cc->methods.output_port_connected;
 577                         break;
 578                 default:
 579                         abort();
 580                 }
 581
 582                 break;
 583         }
 584         case BT_COMPONENT_CLASS_TYPE_FILTER:
 585         {
 586                 struct bt_component_class_filter *flt_cc = (void *) comp->class;
 587
 588                 switch (self_port->type) {
 589                 case BT_PORT_TYPE_INPUT:
 590                         method = (method_t) flt_cc->methods.input_port_connected;
 591                         break;
 592                 case BT_PORT_TYPE_OUTPUT:
 593                         method = (method_t) flt_cc->methods.output_port_connected;
 594                         break;
 595                 default:
 596                         abort();
 597                 }
 598
 599                 break;
 600         }
 601         case BT_COMPONENT_CLASS_TYPE_SINK:
 602         {
 603                 struct bt_component_class_sink *sink_cc = (void *) comp->class;
 604
 605                 switch (self_port->type) {
 606                 case BT_PORT_TYPE_INPUT:
 607                         method = (method_t) sink_cc->methods.input_port_connected;
 608                         break;
 609                 default:
 610                         abort();
 611                 }
 612
 613                 break;
 614         }
 615         default:
 616                 abort();
 617         }
 618
 619         if (method) {
 620                 BT_LIB_LOGD("Calling user's \"port connected\" method: "
 621                         "%![comp-]+c, %![self-port-]+p, %![other-port-]+p",
 622                         comp, self_port, other_port);
 623                 status = method(comp, self_port, (void *) other_port);
 624                 BT_LOGD("User method returned: status=%s",
 625                         bt_self_component_status_string(status));
 626                 BT_ASSERT_PRE(status == BT_SELF_COMPONENT_STATUS_OK ||
 627                         status == BT_SELF_COMPONENT_STATUS_ERROR ||
 628                         status == BT_SELF_COMPONENT_STATUS_NOMEM,
 629                         "Unexpected returned component status: status=%s",
 630                         bt_self_component_status_string(status));
 631         }
 632
 633         return status;
 634 }
 635
 636 BT_HIDDEN
 637 void bt_component_add_destroy_listener(struct bt_component *component,
 638                 bt_component_destroy_listener_func func, void *data)
 639 {
 640         struct bt_component_destroy_listener listener;
 641
 642         BT_ASSERT(component);
 643         BT_ASSERT(func);
 644         listener.func = func;
 645         listener.data = data;
 646         g_array_append_val(component->destroy_listeners, listener);
 647         BT_LIB_LOGV("Added destroy listener: %![comp-]+c, "
 648                 "func-addr=%p, data-addr=%p",
 649                 component, func, data);
 650 }
 651
 652 BT_HIDDEN
 653 void bt_component_remove_destroy_listener(struct bt_component *component,
 654                 bt_component_destroy_listener_func func, void *data)
 655 {
 656         uint64_t i;
 657
 658         BT_ASSERT(component);
 659         BT_ASSERT(func);
 660
 661         for (i = 0; i < component->destroy_listeners->len; i++) {
 662                 struct bt_component_destroy_listener *listener =
 663                         &g_array_index(component->destroy_listeners,
 664                                 struct bt_component_destroy_listener, i);
 665
 666                 if (listener->func == func && listener->data == data) {
 667                         g_array_remove_index(component->destroy_listeners, i);
 668                         i--;
 669                         BT_LIB_LOGV("Removed destroy listener: %![comp-]+c, "
 670                                 "func-addr=%p, data-addr=%p",
 671                                 component, func, data);
 672                 }
 673         }
 674 }
 675
 676 void bt_component_get_ref(const struct bt_component *component)
 677 {
 678         bt_object_get_ref(component);
 679 }
 680
 681 void bt_component_put_ref(const struct bt_component *component)
 682 {
 683         bt_object_put_ref(component);
 684 }