lib/graph/component.c

   1 /*
   2  * Copyright 2015 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 "COMP"
  26 #include <babeltrace/lib-logging-internal.h>
  27
  28 #include <babeltrace/graph/private-component.h>
  29 #include <babeltrace/graph/component.h>
  30 #include <babeltrace/graph/component-internal.h>
  31 #include <babeltrace/graph/component-class-internal.h>
  32 #include <babeltrace/graph/component-source-internal.h>
  33 #include <babeltrace/graph/component-filter-internal.h>
  34 #include <babeltrace/graph/component-sink-internal.h>
  35 #include <babeltrace/graph/private-connection.h>
  36 #include <babeltrace/graph/connection-internal.h>
  37 #include <babeltrace/graph/graph-internal.h>
  38 #include <babeltrace/graph/notification-iterator-internal.h>
  39 #include <babeltrace/graph/private-connection-private-notification-iterator.h>
  40 #include <babeltrace/babeltrace-internal.h>
  41 #include <babeltrace/compiler-internal.h>
  42 #include <babeltrace/object.h>
  43 #include <babeltrace/types.h>
  44 #include <babeltrace/values.h>
  45 #include <babeltrace/values-internal.h>
  46 #include <babeltrace/assert-internal.h>
  47 #include <stdint.h>
  48 #include <inttypes.h>
  49
  50 static
  51 struct bt_component * (* const component_create_funcs[])(
  52                 struct bt_component_class *) = {
  53         [BT_COMPONENT_CLASS_TYPE_SOURCE] = bt_component_source_create,
  54         [BT_COMPONENT_CLASS_TYPE_SINK] = bt_component_sink_create,
  55         [BT_COMPONENT_CLASS_TYPE_FILTER] = bt_component_filter_create,
  56 };
  57
  58 static
  59 void (*component_destroy_funcs[])(struct bt_component *) = {
  60         [BT_COMPONENT_CLASS_TYPE_SOURCE] = bt_component_source_destroy,
  61         [BT_COMPONENT_CLASS_TYPE_SINK] = bt_component_sink_destroy,
  62         [BT_COMPONENT_CLASS_TYPE_FILTER] = bt_component_filter_destroy,
  63 };
  64
  65 static
  66 void bt_component_destroy(struct bt_object *obj)
  67 {
  68         struct bt_component *component = NULL;
  69         struct bt_component_class *component_class = NULL;
  70         int i;
  71
  72         if (!obj) {
  73                 return;
  74         }
  75
  76         /*
  77          * The component's reference count is 0 if we're here. Increment
  78          * it to avoid a double-destroy (possibly infinitely recursive).
  79          * This could happen for example if the component's finalization
  80          * function does bt_object_get_ref() (or anything that causes bt_object_get_ref() to
  81          * be called) on itself (ref. count goes from 0 to 1), and then
  82          * bt_object_put_ref(): the reference count would go from 1 to 0 again and
  83          * this function would be called again.
  84          */
  85         obj->ref_count++;
  86         component = container_of(obj, struct bt_component, base);
  87         BT_LOGD("Destroying component: addr=%p, name=\"%s\", graph-addr=%p",
  88                 component, bt_component_get_name(component),
  89                 obj->parent);
  90
  91         /* Call destroy listeners in reverse registration order */
  92         BT_LOGD_STR("Calling destroy listeners.");
  93
  94         for (i = component->destroy_listeners->len - 1; i >= 0; i--) {
  95                 struct bt_component_destroy_listener *listener =
  96                         &g_array_index(component->destroy_listeners,
  97                                 struct bt_component_destroy_listener, i);
  98
  99                 listener->func(component, listener->data);
 100         }
 101
 102         component_class = component->class;
 103
 104         /*
 105          * User data is destroyed first, followed by the concrete
 106          * component instance. Do not finalize if the component's user
 107          * initialization method failed in the first place.
 108          */
 109         if (component->initialized && component->class->methods.finalize) {
 110                 BT_LOGD_STR("Calling user's finalization method.");
 111                 component->class->methods.finalize(
 112                         bt_private_component_from_component(component));
 113         }
 114
 115         if (component->destroy) {
 116                 BT_LOGD_STR("Destroying type-specific data.");
 117                 component->destroy(component);
 118         }
 119
 120         if (component->input_ports) {
 121                 BT_LOGD_STR("Destroying input ports.");
 122                 g_ptr_array_free(component->input_ports, TRUE);
 123         }
 124
 125         if (component->output_ports) {
 126                 BT_LOGD_STR("Destroying output ports.");
 127                 g_ptr_array_free(component->output_ports, TRUE);
 128         }
 129
 130         if (component->destroy_listeners) {
 131                 g_array_free(component->destroy_listeners, TRUE);
 132         }
 133
 134         if (component->name) {
 135                 g_string_free(component->name, TRUE);
 136         }
 137
 138         BT_LOGD("Putting component class.");
 139         bt_object_put_ref(component_class);
 140         g_free(component);
 141 }
 142
 143 struct bt_component *bt_component_borrow_from_private(
 144                 struct bt_private_component *private_component)
 145 {
 146         return (void *) private_component;
 147 }
 148
 149 enum bt_component_class_type bt_component_get_class_type(
 150                 struct bt_component *component)
 151 {
 152         return component ? component->class->type : BT_COMPONENT_CLASS_TYPE_UNKNOWN;
 153 }
 154
 155 static
 156 struct bt_port *bt_component_add_port(
 157                 struct bt_component *component, GPtrArray *ports,
 158                 enum bt_port_type port_type, const char *name, void *user_data)
 159 {
 160         size_t i;
 161         struct bt_port *new_port = NULL;
 162         struct bt_graph *graph = NULL;
 163
 164         if (!name) {
 165                 BT_LOGW_STR("Invalid parameter: name is NULL.");
 166                 goto end;
 167         }
 168
 169         if (strlen(name) == 0) {
 170                 BT_LOGW_STR("Invalid parameter: name is an empty string.");
 171                 goto end;
 172         }
 173
 174         BT_LOGD("Adding port to component: comp-addr=%p, comp-name=\"%s\", "
 175                 "port-type=%s, port-name=\"%s\"", component,
 176                 bt_component_get_name(component),
 177                 bt_port_type_string(port_type), name);
 178
 179         /* Look for a port having the same name. */
 180         for (i = 0; i < ports->len; i++) {
 181                 const char *port_name;
 182                 struct bt_port *port = g_ptr_array_index(ports, i);
 183
 184                 port_name = bt_port_get_name(port);
 185                 BT_ASSERT(port_name);
 186
 187                 if (!strcmp(name, port_name)) {
 188                         /* Port name clash, abort. */
 189                         BT_LOGW("Invalid parameter: another port with the same name already exists in the component: "
 190                                 "other-port-addr=%p", port);
 191                         goto end;
 192                 }
 193         }
 194
 195         new_port = bt_port_create(component, port_type, name, user_data);
 196         if (!new_port) {
 197                 BT_LOGE("Cannot create port object.");
 198                 goto end;
 199         }
 200
 201         /*
 202          * No name clash, add the port.
 203          * The component is now the port's parent; it should _not_
 204          * hold a reference to the port since the port's lifetime
 205          * is now protected by the component's own lifetime.
 206          */
 207         g_ptr_array_add(ports, new_port);
 208
 209         /*
 210          * Notify the graph's creator that a new port was added.
 211          */
 212         graph = bt_object_get_ref(bt_component_borrow_graph(component));
 213         if (graph) {
 214                 bt_graph_notify_port_added(graph, new_port);
 215                 BT_OBJECT_PUT_REF_AND_RESET(graph);
 216         }
 217
 218         BT_LOGD("Created and added port to component: comp-addr=%p, comp-name=\"%s\", "
 219                 "port-type=%s, port-name=\"%s\", port-addr=%p", component,
 220                 bt_component_get_name(component),
 221                 bt_port_type_string(port_type), name, new_port);
 222
 223 end:
 224         return new_port;
 225 }
 226
 227 BT_HIDDEN
 228 int64_t bt_component_get_input_port_count(struct bt_component *comp)
 229 {
 230         BT_ASSERT(comp);
 231         return (int64_t) comp->input_ports->len;
 232 }
 233
 234 BT_HIDDEN
 235 int64_t bt_component_get_output_port_count(struct bt_component *comp)
 236 {
 237         BT_ASSERT(comp);
 238         return (int64_t) comp->output_ports->len;
 239 }
 240
 241 BT_HIDDEN
 242 enum bt_component_status bt_component_create(
 243                 struct bt_component_class *component_class,
 244                 const char *name, struct bt_component **user_component)
 245 {
 246         enum bt_component_status status = BT_COMPONENT_STATUS_OK;
 247         struct bt_component *component = NULL;
 248         enum bt_component_class_type type;
 249
 250         BT_ASSERT(user_component);
 251         BT_ASSERT(component_class);
 252         BT_ASSERT(name);
 253
 254         type = bt_component_class_get_type(component_class);
 255         BT_LOGD("Creating empty component from component class: "
 256                 "comp-cls-addr=%p, comp-cls-type=%s, name=\"%s\"",
 257                 component_class, bt_component_class_type_string(type), name);
 258         component = component_create_funcs[type](component_class);
 259         if (!component) {
 260                 BT_LOGE_STR("Cannot create specific component object.");
 261                 status = BT_COMPONENT_STATUS_NOMEM;
 262                 goto end;
 263         }
 264
 265         bt_object_init_shared_with_parent(&component->base,
 266                 bt_component_destroy);
 267         component->class = bt_object_get_ref(component_class);
 268         component->destroy = component_destroy_funcs[type];
 269         component->name = g_string_new(name);
 270         if (!component->name) {
 271                 BT_LOGE_STR("Failed to allocate one GString.");
 272                 status = BT_COMPONENT_STATUS_NOMEM;
 273                 goto end;
 274         }
 275
 276         component->input_ports = g_ptr_array_new_with_free_func(
 277                 (GDestroyNotify) bt_object_try_spec_release);
 278         if (!component->input_ports) {
 279                 BT_LOGE_STR("Failed to allocate one GPtrArray.");
 280                 status = BT_COMPONENT_STATUS_NOMEM;
 281                 goto end;
 282         }
 283
 284         component->output_ports = g_ptr_array_new_with_free_func(
 285                 (GDestroyNotify) bt_object_try_spec_release);
 286         if (!component->output_ports) {
 287                 BT_LOGE_STR("Failed to allocate one GPtrArray.");
 288                 status = BT_COMPONENT_STATUS_NOMEM;
 289                 goto end;
 290         }
 291
 292         component->destroy_listeners = g_array_new(FALSE, TRUE,
 293                 sizeof(struct bt_component_destroy_listener));
 294         if (!component->destroy_listeners) {
 295                 BT_LOGE_STR("Failed to allocate one GArray.");
 296                 status = BT_COMPONENT_STATUS_NOMEM;
 297                 goto end;
 298         }
 299
 300         BT_LOGD("Created empty component from component class: "
 301                 "comp-cls-addr=%p, comp-cls-type=%s, name=\"%s\", comp-addr=%p",
 302                 component_class, bt_component_class_type_string(type), name,
 303                 component);
 304         BT_OBJECT_MOVE_REF(*user_component, component);
 305
 306 end:
 307         bt_object_put_ref(component);
 308         return status;
 309 }
 310
 311 const char *bt_component_get_name(struct bt_component *component)
 312 {
 313         const char *ret = NULL;
 314
 315         if (!component) {
 316                 BT_LOGW_STR("Invalid parameter: component is NULL.");
 317                 goto end;
 318         }
 319
 320         ret = component->name->len == 0 ? NULL : component->name->str;
 321
 322 end:
 323         return ret;
 324 }
 325
 326 struct bt_component_class *bt_component_get_class(
 327                 struct bt_component *component)
 328 {
 329         return component ? bt_object_get_ref(component->class) : NULL;
 330 }
 331
 332 void *bt_private_component_get_user_data(
 333                 struct bt_private_component *private_component)
 334 {
 335         struct bt_component *component =
 336                 bt_component_borrow_from_private(private_component);
 337
 338         return component ? component->user_data : NULL;
 339 }
 340
 341 enum bt_component_status bt_private_component_set_user_data(
 342                 struct bt_private_component *private_component,
 343                 void *data)
 344 {
 345         struct bt_component *component =
 346                 bt_component_borrow_from_private(private_component);
 347         enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
 348
 349         if (!component) {
 350                 BT_LOGW_STR("Invalid parameter: component is NULL.");
 351                 ret = BT_COMPONENT_STATUS_INVALID;
 352                 goto end;
 353         }
 354
 355         component->user_data = data;
 356         BT_LOGV("Set component's user data: "
 357                 "comp-addr=%p, comp-name=\"%s\", user-data-addr=%p",
 358                 component, bt_component_get_name(component), data);
 359
 360 end:
 361         return ret;
 362 }
 363
 364 BT_HIDDEN
 365 void bt_component_set_graph(struct bt_component *component,
 366                 struct bt_graph *graph)
 367 {
 368         bt_object_set_parent(&component->base,
 369                 graph ? &graph->base : NULL);
 370 }
 371
 372 bt_bool bt_component_graph_is_canceled(struct bt_component *component)
 373 {
 374         return bt_graph_is_canceled(
 375                 (void *) bt_object_borrow_parent(&component->base));
 376 }
 377
 378 static
 379 struct bt_port *bt_component_get_port_by_name(GPtrArray *ports,
 380                 const char *name)
 381 {
 382         size_t i;
 383         struct bt_port *ret_port = NULL;
 384
 385         BT_ASSERT(name);
 386
 387         for (i = 0; i < ports->len; i++) {
 388                 struct bt_port *port = g_ptr_array_index(ports, i);
 389                 const char *port_name = bt_port_get_name(port);
 390
 391                 if (!port_name) {
 392                         continue;
 393                 }
 394
 395                 if (!strcmp(name, port_name)) {
 396                         ret_port = bt_object_get_ref(port);
 397                         break;
 398                 }
 399         }
 400
 401         return ret_port;
 402 }
 403
 404 BT_HIDDEN
 405 struct bt_port *bt_component_get_input_port_by_name(struct bt_component *comp,
 406                 const char *name)
 407 {
 408         BT_ASSERT(comp);
 409
 410         return bt_component_get_port_by_name(comp->input_ports, name);
 411 }
 412
 413 BT_HIDDEN
 414 struct bt_port *bt_component_get_output_port_by_name(struct bt_component *comp,
 415                 const char *name)
 416 {
 417         BT_ASSERT(comp);
 418
 419         return bt_component_get_port_by_name(comp->output_ports, name);
 420 }
 421
 422 static
 423 struct bt_port *bt_component_get_port_by_index(GPtrArray *ports, uint64_t index)
 424 {
 425         struct bt_port *port = NULL;
 426
 427         if (index >= ports->len) {
 428                 BT_LOGW("Invalid parameter: index is out of bounds: "
 429                         "index=%" PRIu64 ", count=%u",
 430                         index, ports->len);
 431                 goto end;
 432         }
 433
 434         port = bt_object_get_ref(g_ptr_array_index(ports, index));
 435 end:
 436         return port;
 437 }
 438
 439 BT_HIDDEN
 440 struct bt_port *bt_component_get_input_port_by_index(struct bt_component *comp,
 441                 uint64_t index)
 442 {
 443         BT_ASSERT(comp);
 444
 445         return bt_component_get_port_by_index(comp->input_ports, index);
 446 }
 447
 448 BT_HIDDEN
 449 struct bt_port *bt_component_get_output_port_by_index(struct bt_component *comp,
 450                 uint64_t index)
 451 {
 452         BT_ASSERT(comp);
 453
 454         return bt_component_get_port_by_index(comp->output_ports, index);
 455 }
 456
 457 BT_HIDDEN
 458 struct bt_port *bt_component_add_input_port(
 459                 struct bt_component *component, const char *name,
 460                 void *user_data)
 461 {
 462         /* bt_component_add_port() logs details */
 463         return bt_component_add_port(component, component->input_ports,
 464                 BT_PORT_TYPE_INPUT, name, user_data);
 465 }
 466
 467 BT_HIDDEN
 468 struct bt_port *bt_component_add_output_port(
 469                 struct bt_component *component, const char *name,
 470                 void *user_data)
 471 {
 472         /* bt_component_add_port() logs details */
 473         return bt_component_add_port(component, component->output_ports,
 474                 BT_PORT_TYPE_OUTPUT, name, user_data);
 475 }
 476
 477 static
 478 void bt_component_remove_port_by_index(struct bt_component *component,
 479                 GPtrArray *ports, size_t index)
 480 {
 481         struct bt_port *port;
 482         struct bt_graph *graph;
 483
 484         BT_ASSERT(ports);
 485         BT_ASSERT(index < ports->len);
 486         port = g_ptr_array_index(ports, index);
 487
 488         BT_LOGD("Removing port from component: "
 489                 "comp-addr=%p, comp-name=\"%s\", "
 490                 "port-addr=%p, port-name=\"%s\"",
 491                 component, bt_component_get_name(component),
 492                 port, bt_port_get_name(port));
 493
 494         /* Disconnect both ports of this port's connection, if any */
 495         if (port->connection) {
 496                 bt_connection_end(port->connection, true);
 497         }
 498
 499         /* Remove from parent's array of ports (weak refs) */
 500         g_ptr_array_remove_index(ports, index);
 501
 502         /* Detach port from its component parent */
 503         BT_OBJECT_PUT_REF_AND_RESET(port->base.parent);
 504
 505         /*
 506          * Notify the graph's creator that a port is removed.
 507          */
 508         graph = bt_object_get_ref(bt_component_borrow_graph(component));
 509         if (graph) {
 510                 bt_graph_notify_port_removed(graph, component, port);
 511                 BT_OBJECT_PUT_REF_AND_RESET(graph);
 512         }
 513
 514         BT_LOGD("Removed port from component: "
 515                 "comp-addr=%p, comp-name=\"%s\", "
 516                 "port-addr=%p, port-name=\"%s\"",
 517                 component, bt_component_get_name(component),
 518                 port, bt_port_get_name(port));
 519 }
 520
 521 BT_HIDDEN
 522 enum bt_component_status bt_component_remove_port(
 523                 struct bt_component *component, struct bt_port *port)
 524 {
 525         size_t i;
 526         enum bt_component_status status = BT_COMPONENT_STATUS_OK;
 527         GPtrArray *ports = NULL;
 528
 529         if (!component) {
 530                 BT_LOGW_STR("Invalid parameter: component is NULL.");
 531                 status = BT_COMPONENT_STATUS_INVALID;
 532                 goto end;
 533         }
 534
 535         if (!port) {
 536                 BT_LOGW_STR("Invalid parameter: port is NULL.");
 537                 status = BT_COMPONENT_STATUS_INVALID;
 538                 goto end;
 539         }
 540
 541         if (bt_port_get_type(port) == BT_PORT_TYPE_INPUT) {
 542                 ports = component->input_ports;
 543         } else if (bt_port_get_type(port) == BT_PORT_TYPE_OUTPUT) {
 544                 ports = component->output_ports;
 545         }
 546
 547         BT_ASSERT(ports);
 548
 549         for (i = 0; i < ports->len; i++) {
 550                 struct bt_port *cur_port = g_ptr_array_index(ports, i);
 551
 552                 if (cur_port == port) {
 553                         bt_component_remove_port_by_index(component,
 554                                 ports, i);
 555                         goto end;
 556                 }
 557         }
 558
 559         status = BT_COMPONENT_STATUS_NOT_FOUND;
 560         BT_LOGW("Port to remove from component was not found: "
 561                 "comp-addr=%p, comp-name=\"%s\", "
 562                 "port-addr=%p, port-name=\"%s\"",
 563                 component, bt_component_get_name(component),
 564                 port, bt_port_get_name(port));
 565
 566 end:
 567         return status;
 568 }
 569
 570 BT_HIDDEN
 571 enum bt_component_status bt_component_accept_port_connection(
 572                 struct bt_component *comp, struct bt_port *self_port,
 573                 struct bt_port *other_port)
 574 {
 575         enum bt_component_status status = BT_COMPONENT_STATUS_OK;
 576
 577         BT_ASSERT(comp);
 578         BT_ASSERT(self_port);
 579         BT_ASSERT(other_port);
 580
 581         if (comp->class->methods.accept_port_connection) {
 582                 BT_LOGD("Calling user's \"accept port connection\" method: "
 583                         "comp-addr=%p, comp-name=\"%s\", "
 584                         "self-port-addr=%p, self-port-name=\"%s\", "
 585                         "other-port-addr=%p, other-port-name=\"%s\"",
 586                         comp, bt_component_get_name(comp),
 587                         self_port, bt_port_get_name(self_port),
 588                         other_port, bt_port_get_name(other_port));
 589                 status = comp->class->methods.accept_port_connection(
 590                         bt_private_component_from_component(comp),
 591                         bt_private_port_from_port(self_port),
 592                         other_port);
 593                 BT_LOGD("User method returned: status=%s",
 594                         bt_component_status_string(status));
 595         }
 596
 597         return status;
 598 }
 599
 600 BT_HIDDEN
 601 enum bt_component_status bt_component_port_connected(struct bt_component *comp,
 602                 struct bt_port *self_port, struct bt_port *other_port)
 603 {
 604         enum bt_component_status status = BT_COMPONENT_STATUS_OK;
 605
 606         BT_ASSERT(comp);
 607         BT_ASSERT(self_port);
 608         BT_ASSERT(other_port);
 609
 610         if (comp->class->methods.port_connected) {
 611                 BT_LOGD("Calling user's \"port connected\" method: "
 612                         "comp-addr=%p, comp-name=\"%s\", "
 613                         "self-port-addr=%p, self-port-name=\"%s\", "
 614                         "other-port-addr=%p, other-port-name=\"%s\"",
 615                         comp, bt_component_get_name(comp),
 616                         self_port, bt_port_get_name(self_port),
 617                         other_port, bt_port_get_name(other_port));
 618                 status = comp->class->methods.port_connected(
 619                         bt_private_component_from_component(comp),
 620                         bt_private_port_from_port(self_port), other_port);
 621         }
 622
 623         return status;
 624 }
 625
 626 BT_HIDDEN
 627 void bt_component_port_disconnected(struct bt_component *comp,
 628                 struct bt_port *port)
 629 {
 630         BT_ASSERT(comp);
 631         BT_ASSERT(port);
 632
 633         if (comp->class->methods.port_disconnected) {
 634                 BT_LOGD("Calling user's \"port disconnected\" method: "
 635                         "comp-addr=%p, comp-name=\"%s\", "
 636                         "port-addr=%p, port-name=\"%s\"",
 637                         comp, bt_component_get_name(comp),
 638                         port, bt_port_get_name(port));
 639                 comp->class->methods.port_disconnected(
 640                         bt_private_component_from_component(comp),
 641                         bt_private_port_from_port(port));
 642         }
 643 }
 644
 645 BT_HIDDEN
 646 void bt_component_add_destroy_listener(struct bt_component *component,
 647                 bt_component_destroy_listener_func func, void *data)
 648 {
 649         struct bt_component_destroy_listener listener;
 650
 651         BT_ASSERT(component);
 652         BT_ASSERT(func);
 653         listener.func = func;
 654         listener.data = data;
 655         g_array_append_val(component->destroy_listeners, listener);
 656         BT_LOGV("Added destroy listener: "
 657                 "comp-addr=%p, comp-name=\"%s\", "
 658                 "func-addr=%p, data-addr=%p",
 659                 component, bt_component_get_name(component),
 660                 func, data);
 661 }
 662
 663 BT_HIDDEN
 664 void bt_component_remove_destroy_listener(struct bt_component *component,
 665                 bt_component_destroy_listener_func func, void *data)
 666 {
 667         size_t i;
 668
 669         BT_ASSERT(component);
 670         BT_ASSERT(func);
 671
 672         for (i = 0; i < component->destroy_listeners->len; i++) {
 673                 struct bt_component_destroy_listener *listener =
 674                         &g_array_index(component->destroy_listeners,
 675                                 struct bt_component_destroy_listener, i);
 676
 677                 if (listener->func == func && listener->data == data) {
 678                         g_array_remove_index(component->destroy_listeners, i);
 679                         i--;
 680                         BT_LOGV("Removed destroy listener: "
 681                                 "comp-addr=%p, comp-name=\"%s\", "
 682                                 "func-addr=%p, data-addr=%p",
 683                                 component, bt_component_get_name(component),
 684                                 func, data);
 685                 }
 686         }
 687 }