X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=lib%2Fgraph%2Fgraph.c;fp=lib%2Fgraph%2Fgraph.c;h=0000000000000000000000000000000000000000;hp=f7b02a10bece15a7914d8612e362f058328bcc6e;hb=578e048b5debf169e286e5b5cc747b5d6c16886d;hpb=68b66a256a54d32992dfefeaad11eea88b7df234 diff --git a/lib/graph/graph.c b/lib/graph/graph.c deleted file mode 100644 index f7b02a10..00000000 --- a/lib/graph/graph.c +++ /dev/null @@ -1,1556 +0,0 @@ -/* - * Copyright 2017-2018 Philippe Proulx - * Copyright 2017 Jérémie Galarneau - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#define BT_LOG_TAG "GRAPH" -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -typedef enum bt_graph_listener_status (*port_added_func_t)( - const void *, const void *, void *); - -typedef enum bt_graph_listener_status (*ports_connected_func_t)( - const void *, const void *, const void *, const void *, void *); - -typedef enum bt_self_component_status (*comp_init_method_t)(const void *, - const void *, void *); - -struct bt_graph_listener { - bt_graph_listener_removed_func removed; - void *data; -}; - -struct bt_graph_listener_port_added { - struct bt_graph_listener base; - port_added_func_t func; -}; - -struct bt_graph_listener_ports_connected { - struct bt_graph_listener base; - ports_connected_func_t func; -}; - -#define INIT_LISTENERS_ARRAY(_type, _listeners) \ - do { \ - _listeners = g_array_new(FALSE, TRUE, sizeof(_type)); \ - if (!(_listeners)) { \ - BT_LOGE_STR("Failed to allocate one GArray."); \ - } \ - } while (0) - -#define CALL_REMOVE_LISTENERS(_type, _listeners) \ - do { \ - size_t i; \ - \ - if (!_listeners) { \ - break; \ - } \ - for (i = 0; i < (_listeners)->len; i++) { \ - _type *listener = \ - &g_array_index((_listeners), _type, i); \ - \ - if (listener->base.removed) { \ - listener->base.removed(listener->base.data); \ - } \ - } \ - } while (0) - -static -void destroy_graph(struct bt_object *obj) -{ - struct bt_graph *graph = container_of(obj, struct bt_graph, base); - - /* - * The graph's reference count is 0 if we're here. Increment - * it to avoid a double-destroy (possibly infinitely recursive) - * in this situation: - * - * 1. We put and destroy a connection. - * 2. This connection's destructor finalizes its active message - * iterators. - * 3. A message iterator's finalization function gets a new - * reference on its component (reference count goes from 0 to - * 1). - * 4. Since this component's reference count goes to 1, it takes - * a reference on its parent (this graph). This graph's - * reference count goes from 0 to 1. - * 5. The message iterator's finalization function puts its - * component reference (reference count goes from 1 to 0). - * 6. Since this component's reference count goes from 1 to 0, - * it puts its parent (this graph). This graph's reference - * count goes from 1 to 0. - * 7. Since this graph's reference count goes from 1 to 0, its - * destructor is called (this function). - * - * With the incrementation below, the graph's reference count at - * step 4 goes from 1 to 2, and from 2 to 1 at step 6. This - * ensures that this function is not called two times. - */ - BT_LIB_LOGD("Destroying graph: %!+g", graph); - obj->ref_count++; - - /* - * Cancel the graph to disallow some operations, like creating - * message iterators and adding ports to components. - */ - (void) bt_graph_cancel((void *) graph); - - /* Call all remove listeners */ - CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, - graph->listeners.source_output_port_added); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, - graph->listeners.filter_output_port_added); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, - graph->listeners.filter_input_port_added); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_port_added, - graph->listeners.sink_input_port_added); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, - graph->listeners.source_filter_ports_connected); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, - graph->listeners.filter_filter_ports_connected); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, - graph->listeners.source_sink_ports_connected); - CALL_REMOVE_LISTENERS(struct bt_graph_listener_ports_connected, - graph->listeners.filter_sink_ports_connected); - - if (graph->messages) { - g_ptr_array_free(graph->messages, TRUE); - graph->messages = NULL; - } - - if (graph->connections) { - BT_LOGD_STR("Destroying connections."); - g_ptr_array_free(graph->connections, TRUE); - graph->connections = NULL; - } - - if (graph->components) { - BT_LOGD_STR("Destroying components."); - g_ptr_array_free(graph->components, TRUE); - graph->components = NULL; - } - - if (graph->sinks_to_consume) { - g_queue_free(graph->sinks_to_consume); - graph->sinks_to_consume = NULL; - } - - if (graph->listeners.source_output_port_added) { - g_array_free(graph->listeners.source_output_port_added, TRUE); - graph->listeners.source_output_port_added = NULL; - } - - if (graph->listeners.filter_output_port_added) { - g_array_free(graph->listeners.filter_output_port_added, TRUE); - graph->listeners.filter_output_port_added = NULL; - } - - if (graph->listeners.filter_input_port_added) { - g_array_free(graph->listeners.filter_input_port_added, TRUE); - graph->listeners.filter_input_port_added = NULL; - } - - if (graph->listeners.sink_input_port_added) { - g_array_free(graph->listeners.sink_input_port_added, TRUE); - graph->listeners.sink_input_port_added = NULL; - } - - if (graph->listeners.source_filter_ports_connected) { - g_array_free(graph->listeners.source_filter_ports_connected, - TRUE); - graph->listeners.source_filter_ports_connected = NULL; - } - - if (graph->listeners.filter_filter_ports_connected) { - g_array_free(graph->listeners.filter_filter_ports_connected, - TRUE); - graph->listeners.filter_filter_ports_connected = NULL; - } - - if (graph->listeners.source_sink_ports_connected) { - g_array_free(graph->listeners.source_sink_ports_connected, - TRUE); - graph->listeners.source_sink_ports_connected = NULL; - } - - if (graph->listeners.filter_sink_ports_connected) { - g_array_free(graph->listeners.filter_sink_ports_connected, - TRUE); - graph->listeners.filter_sink_ports_connected = NULL; - } - - bt_object_pool_finalize(&graph->event_msg_pool); - bt_object_pool_finalize(&graph->packet_begin_msg_pool); - bt_object_pool_finalize(&graph->packet_end_msg_pool); - g_free(graph); -} - -static -void destroy_message_event(struct bt_message *msg, - struct bt_graph *graph) -{ - bt_message_event_destroy(msg); -} - -static -void destroy_message_packet_begin(struct bt_message *msg, - struct bt_graph *graph) -{ - bt_message_packet_destroy(msg); -} - -static -void destroy_message_packet_end(struct bt_message *msg, - struct bt_graph *graph) -{ - bt_message_packet_destroy(msg); -} - -static -void notify_message_graph_is_destroyed(struct bt_message *msg) -{ - bt_message_unlink_graph(msg); -} - -struct bt_graph *bt_graph_create(void) -{ - struct bt_graph *graph; - int ret; - - BT_LOGD_STR("Creating graph object."); - graph = g_new0(struct bt_graph, 1); - if (!graph) { - BT_LOGE_STR("Failed to allocate one graph."); - goto end; - } - - bt_object_init_shared(&graph->base, destroy_graph); - graph->connections = g_ptr_array_new_with_free_func( - (GDestroyNotify) bt_object_try_spec_release); - if (!graph->connections) { - BT_LOGE_STR("Failed to allocate one GPtrArray."); - goto error; - } - graph->components = g_ptr_array_new_with_free_func( - (GDestroyNotify) bt_object_try_spec_release); - if (!graph->components) { - BT_LOGE_STR("Failed to allocate one GPtrArray."); - goto error; - } - graph->sinks_to_consume = g_queue_new(); - if (!graph->sinks_to_consume) { - BT_LOGE_STR("Failed to allocate one GQueue."); - goto error; - } - - bt_graph_set_can_consume(graph, true); - INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, - graph->listeners.source_output_port_added); - - if (!graph->listeners.source_output_port_added) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, - graph->listeners.filter_output_port_added); - - if (!graph->listeners.filter_output_port_added) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, - graph->listeners.filter_input_port_added); - - if (!graph->listeners.filter_input_port_added) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_port_added, - graph->listeners.sink_input_port_added); - - if (!graph->listeners.sink_input_port_added) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, - graph->listeners.source_filter_ports_connected); - - if (!graph->listeners.source_filter_ports_connected) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, - graph->listeners.source_sink_ports_connected); - - if (!graph->listeners.source_sink_ports_connected) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, - graph->listeners.filter_filter_ports_connected); - - if (!graph->listeners.filter_filter_ports_connected) { - ret = -1; - goto error; - } - - INIT_LISTENERS_ARRAY(struct bt_graph_listener_ports_connected, - graph->listeners.filter_sink_ports_connected); - - if (!graph->listeners.filter_sink_ports_connected) { - ret = -1; - goto error; - } - - ret = bt_object_pool_initialize(&graph->event_msg_pool, - (bt_object_pool_new_object_func) bt_message_event_new, - (bt_object_pool_destroy_object_func) destroy_message_event, - graph); - if (ret) { - BT_LOGE("Failed to initialize event message pool: ret=%d", - ret); - goto error; - } - - ret = bt_object_pool_initialize(&graph->packet_begin_msg_pool, - (bt_object_pool_new_object_func) bt_message_packet_beginning_new, - (bt_object_pool_destroy_object_func) destroy_message_packet_begin, - graph); - if (ret) { - BT_LOGE("Failed to initialize packet beginning message pool: ret=%d", - ret); - goto error; - } - - ret = bt_object_pool_initialize(&graph->packet_end_msg_pool, - (bt_object_pool_new_object_func) bt_message_packet_end_new, - (bt_object_pool_destroy_object_func) destroy_message_packet_end, - graph); - if (ret) { - BT_LOGE("Failed to initialize packet end message pool: ret=%d", - ret); - goto error; - } - - graph->messages = g_ptr_array_new_with_free_func( - (GDestroyNotify) notify_message_graph_is_destroyed); - BT_LIB_LOGD("Created graph object: %!+g", graph); - -end: - return (void *) graph; - -error: - BT_OBJECT_PUT_REF_AND_RESET(graph); - goto end; -} - -enum bt_graph_status bt_graph_connect_ports( - struct bt_graph *graph, - const struct bt_port_output *upstream_port_out, - const struct bt_port_input *downstream_port_in, - const struct bt_connection **user_connection) -{ - enum bt_graph_status status = BT_GRAPH_STATUS_OK; - enum bt_graph_listener_status listener_status; - struct bt_connection *connection = NULL; - struct bt_port *upstream_port = (void *) upstream_port_out; - struct bt_port *downstream_port = (void *) downstream_port_in; - struct bt_component *upstream_component = NULL; - struct bt_component *downstream_component = NULL; - enum bt_self_component_status component_status; - bool init_can_consume; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(upstream_port, "Upstream port"); - BT_ASSERT_PRE_NON_NULL(downstream_port, "Downstream port port"); - BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); - BT_ASSERT_PRE( - graph->config_state == BT_GRAPH_CONFIGURATION_STATE_CONFIGURING, - "Graph is not in the \"configuring\" state: %!+g", graph); - BT_ASSERT_PRE(!bt_port_is_connected(upstream_port), - "Upstream port is already connected: %!+p", upstream_port); - BT_ASSERT_PRE(!bt_port_is_connected(downstream_port), - "Downstream port is already connected: %!+p", downstream_port); - BT_ASSERT_PRE(bt_port_borrow_component_inline((void *) upstream_port), - "Upstream port does not belong to a component: %!+p", - upstream_port); - BT_ASSERT_PRE(bt_port_borrow_component_inline((void *) downstream_port), - "Downstream port does not belong to a component: %!+p", - downstream_port); - init_can_consume = graph->can_consume; - BT_LIB_LOGD("Connecting component ports within graph: " - "%![graph-]+g, %![up-port-]+p, %![down-port-]+p", - graph, upstream_port, downstream_port); - bt_graph_set_can_consume(graph, false); - upstream_component = bt_port_borrow_component_inline( - (void *) upstream_port); - downstream_component = bt_port_borrow_component_inline( - (void *) downstream_port); - - /* - * At this point the ports are not connected yet. Both - * components need to accept an eventual connection to their - * port by the other port before we continue. - */ - BT_LIB_LOGD("Asking upstream component to accept the connection: " - "%![comp-]+c", upstream_component); - component_status = bt_component_accept_port_connection( - upstream_component, (void *) upstream_port, - (void *) downstream_port); - if (component_status != BT_SELF_COMPONENT_STATUS_OK) { - if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { - BT_LOGD_STR("Upstream component refused the connection."); - } else { - BT_LOGW("Cannot ask upstream component to accept the connection: " - "status=%s", bt_self_component_status_string(component_status)); - } - - status = (int) component_status; - goto end; - } - - BT_LIB_LOGD("Asking downstream component to accept the connection: " - "%![comp-]+c", downstream_component); - component_status = bt_component_accept_port_connection( - downstream_component, (void *) downstream_port, - (void *) upstream_port); - if (component_status != BT_SELF_COMPONENT_STATUS_OK) { - if (component_status == BT_SELF_COMPONENT_STATUS_REFUSE_PORT_CONNECTION) { - BT_LOGD_STR("Downstream component refused the connection."); - } else { - BT_LOGW("Cannot ask downstream component to accept the connection: " - "status=%s", bt_self_component_status_string(component_status)); - } - - status = (int) component_status; - goto end; - } - - BT_LOGD_STR("Creating connection."); - connection = bt_connection_create(graph, (void *) upstream_port, - (void *) downstream_port); - if (!connection) { - BT_LOGW("Cannot create connection object."); - status = BT_GRAPH_STATUS_NOMEM; - goto end; - } - - BT_LIB_LOGD("Connection object created: %!+x", connection); - - /* - * Ownership of upstream_component/downstream_component and of - * the connection object is transferred to the graph. - */ - g_ptr_array_add(graph->connections, connection); - - /* - * Notify both components that their port is connected. - */ - BT_LIB_LOGD("Notifying upstream component that its port is connected: " - "%![comp-]+c, %![port-]+p", upstream_component, upstream_port); - component_status = bt_component_port_connected(upstream_component, - (void *) upstream_port, (void *) downstream_port); - if (component_status != BT_SELF_COMPONENT_STATUS_OK) { - BT_LIB_LOGW("Error while notifying upstream component that its port is connected: " - "status=%s, %![graph-]+g, %![up-comp-]+c, " - "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p", - bt_self_component_status_string(component_status), - graph, upstream_component, downstream_component, - upstream_port, downstream_port); - bt_connection_end(connection, true); - status = (int) component_status; - goto end; - } - - connection->notified_upstream_port_connected = true; - BT_LIB_LOGD("Notifying downstream component that its port is connected: " - "%![comp-]+c, %![port-]+p", downstream_component, - downstream_port); - component_status = bt_component_port_connected(downstream_component, - (void *) downstream_port, (void *) upstream_port); - if (component_status != BT_SELF_COMPONENT_STATUS_OK) { - BT_LIB_LOGW("Error while notifying downstream component that its port is connected: " - "status=%s, %![graph-]+g, %![up-comp-]+c, " - "%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p", - bt_self_component_status_string(component_status), - graph, upstream_component, downstream_component, - upstream_port, downstream_port); - bt_connection_end(connection, true); - status = (int) component_status; - goto end; - } - - connection->notified_downstream_port_connected = true; - - /* - * Notify the graph's creator that both ports are connected. - */ - BT_LOGD_STR("Notifying graph's user that new component ports are connected."); - listener_status = bt_graph_notify_ports_connected(graph, upstream_port, downstream_port); - if (listener_status != BT_GRAPH_LISTENER_STATUS_OK) { - status = (int) listener_status; - goto end; - } - - connection->notified_graph_ports_connected = true; - BT_LIB_LOGD("Connected component ports within graph: " - "%![graph-]+g, %![up-comp-]+c, %![down-comp-]+c, " - "%![up-port-]+p, %![down-port-]+p", - graph, upstream_component, downstream_component, - upstream_port, downstream_port); - - if (user_connection) { - /* Move reference to user */ - *user_connection = connection; - connection = NULL; - } - -end: - if (status != BT_GRAPH_STATUS_OK) { - bt_graph_make_faulty(graph); - } - - bt_object_put_ref(connection); - (void) init_can_consume; - bt_graph_set_can_consume(graph, init_can_consume); - return status; -} - -static inline -enum bt_graph_status consume_graph_sink(struct bt_component_sink *comp) -{ - enum bt_self_component_status comp_status; - struct bt_component_class_sink *sink_class = NULL; - - BT_ASSERT(comp); - sink_class = (void *) comp->parent.class; - BT_ASSERT(sink_class->methods.consume); - BT_LIB_LOGD("Calling user's consume method: %!+c", comp); - comp_status = sink_class->methods.consume((void *) comp); - BT_LOGD("User method returned: status=%s", - bt_self_component_status_string(comp_status)); - BT_ASSERT_PRE(comp_status == BT_SELF_COMPONENT_STATUS_OK || - comp_status == BT_SELF_COMPONENT_STATUS_END || - comp_status == BT_SELF_COMPONENT_STATUS_AGAIN || - comp_status == BT_SELF_COMPONENT_STATUS_ERROR || - comp_status == BT_SELF_COMPONENT_STATUS_NOMEM, - "Invalid component status returned by consuming method: " - "status=%s", bt_self_component_status_string(comp_status)); - if (comp_status < 0) { - BT_LOGW_STR("Consume method failed."); - goto end; - } - - BT_LIB_LOGV("Consumed from sink: %![comp-]+c, status=%s", - comp, bt_self_component_status_string(comp_status)); - -end: - return (int) comp_status; -} - -/* - * `node` is removed from the queue of sinks to consume when passed to - * this function. This function adds it back to the queue if there's - * still something to consume afterwards. - */ -static inline -enum bt_graph_status consume_sink_node(struct bt_graph *graph, GList *node) -{ - enum bt_graph_status status; - struct bt_component_sink *sink; - - sink = node->data; - status = consume_graph_sink(sink); - if (unlikely(status != BT_GRAPH_STATUS_END)) { - g_queue_push_tail_link(graph->sinks_to_consume, node); - goto end; - } - - /* End reached, the node is not added back to the queue and free'd. */ - g_queue_delete_link(graph->sinks_to_consume, node); - - /* Don't forward an END status if there are sinks left to consume. */ - if (!g_queue_is_empty(graph->sinks_to_consume)) { - status = BT_GRAPH_STATUS_OK; - goto end; - } - -end: - BT_LIB_LOGV("Consumed sink node: %![comp-]+c, status=%s", - sink, bt_graph_status_string(status)); - return status; -} - -BT_HIDDEN -enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph, - struct bt_component_sink *sink) -{ - enum bt_graph_status status; - GList *sink_node; - int index; - - BT_LIB_LOGV("Making specific sink consume: %![comp-]+c", sink); - BT_ASSERT(bt_component_borrow_graph((void *) sink) == graph); - - if (g_queue_is_empty(graph->sinks_to_consume)) { - BT_LOGV_STR("Graph's sink queue is empty: end of graph."); - status = BT_GRAPH_STATUS_END; - goto end; - } - - index = g_queue_index(graph->sinks_to_consume, sink); - if (index < 0) { - BT_LOGV_STR("Sink is not marked as consumable: sink is ended."); - status = BT_GRAPH_STATUS_END; - goto end; - } - - sink_node = g_queue_pop_nth_link(graph->sinks_to_consume, index); - BT_ASSERT(sink_node); - status = consume_sink_node(graph, sink_node); - -end: - return status; -} - -static inline -enum bt_graph_status consume_no_check(struct bt_graph *graph) -{ - enum bt_graph_status status = BT_GRAPH_STATUS_OK; - struct bt_component *sink; - GList *current_node; - - BT_ASSERT_PRE(graph->has_sink, - "Graph has no sink component: %!+g", graph); - BT_LIB_LOGV("Making next sink consume: %![graph-]+g", graph); - - if (unlikely(g_queue_is_empty(graph->sinks_to_consume))) { - BT_LOGV_STR("Graph's sink queue is empty: end of graph."); - status = BT_GRAPH_STATUS_END; - goto end; - } - - current_node = g_queue_pop_head_link(graph->sinks_to_consume); - sink = current_node->data; - BT_LIB_LOGV("Chose next sink to consume: %!+c", sink); - status = consume_sink_node(graph, current_node); - -end: - return status; -} - -enum bt_graph_status bt_graph_consume(struct bt_graph *graph) -{ - enum bt_graph_status status; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); - BT_ASSERT_PRE(graph->can_consume, - "Cannot consume graph in its current state: %!+g", graph); - BT_ASSERT_PRE(graph->config_state != BT_GRAPH_CONFIGURATION_STATE_FAULTY, - "Graph is in a faulty state: %!+g", graph); - bt_graph_set_can_consume(graph, false); - status = bt_graph_configure(graph); - if (unlikely(status)) { - /* bt_graph_configure() logs errors */ - goto end; - } - - status = consume_no_check(graph); - bt_graph_set_can_consume(graph, true); - -end: - return status; -} - -enum bt_graph_status bt_graph_run(struct bt_graph *graph) -{ - enum bt_graph_status status; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); - BT_ASSERT_PRE(graph->can_consume, - "Cannot consume graph in its current state: %!+g", graph); - BT_ASSERT_PRE(graph->config_state != BT_GRAPH_CONFIGURATION_STATE_FAULTY, - "Graph is in a faulty state: %!+g", graph); - bt_graph_set_can_consume(graph, false); - status = bt_graph_configure(graph); - if (unlikely(status)) { - /* bt_graph_configure() logs errors */ - goto end; - } - - BT_LIB_LOGV("Running graph: %!+g", graph); - - do { - /* - * Check if the graph is canceled at each iteration. If - * the graph was canceled by another thread or by a - * signal handler, this is not a warning nor an error, - * it was intentional: log with a DEBUG level only. - */ - if (unlikely(graph->canceled)) { - BT_LIB_LOGD("Stopping the graph: graph is canceled: " - "%!+g", graph); - status = BT_GRAPH_STATUS_CANCELED; - goto end; - } - - status = consume_no_check(graph); - if (unlikely(status == BT_GRAPH_STATUS_AGAIN)) { - /* - * If AGAIN is received and there are multiple - * sinks, go ahead and consume from the next - * sink. - * - * However, in the case where a single sink is - * left, the caller can decide to busy-wait and - * call bt_graph_run() continuously - * until the source is ready or it can decide to - * sleep for an arbitrary amount of time. - */ - if (graph->sinks_to_consume->length > 1) { - status = BT_GRAPH_STATUS_OK; - } - } - } while (status == BT_GRAPH_STATUS_OK); - - if (g_queue_is_empty(graph->sinks_to_consume)) { - status = BT_GRAPH_STATUS_END; - } - -end: - BT_LIB_LOGV("Graph ran: %![graph-]+g, status=%s", graph, - bt_graph_status_string(status)); - bt_graph_set_can_consume(graph, true); - return status; -} - -enum bt_graph_status -bt_graph_add_source_component_output_port_added_listener( - struct bt_graph *graph, - bt_graph_source_component_output_port_added_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_port_added listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (port_added_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.source_output_port_added, listener); - listener_id = graph->listeners.source_output_port_added->len - 1; - BT_LIB_LOGV("Added \"source component output port added\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_filter_component_output_port_added_listener( - struct bt_graph *graph, - bt_graph_filter_component_output_port_added_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_port_added listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (port_added_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.filter_output_port_added, listener); - listener_id = graph->listeners.filter_output_port_added->len - 1; - BT_LIB_LOGV("Added \"filter component output port added\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_filter_component_input_port_added_listener( - struct bt_graph *graph, - bt_graph_filter_component_input_port_added_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_port_added listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (port_added_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.filter_input_port_added, listener); - listener_id = graph->listeners.filter_input_port_added->len - 1; - BT_LIB_LOGV("Added \"filter component input port added\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_sink_component_input_port_added_listener( - struct bt_graph *graph, - bt_graph_sink_component_input_port_added_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_port_added listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (port_added_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.sink_input_port_added, listener); - listener_id = graph->listeners.sink_input_port_added->len - 1; - BT_LIB_LOGV("Added \"sink component input port added\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_source_filter_component_ports_connected_listener( - struct bt_graph *graph, - bt_graph_source_filter_component_ports_connected_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_ports_connected listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (ports_connected_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.source_filter_ports_connected, - listener); - listener_id = graph->listeners.source_filter_ports_connected->len - 1; - BT_LIB_LOGV("Added \"source to filter component ports connected\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_source_sink_component_ports_connected_listener( - struct bt_graph *graph, - bt_graph_source_sink_component_ports_connected_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_ports_connected listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (ports_connected_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.source_sink_ports_connected, - listener); - listener_id = graph->listeners.source_sink_ports_connected->len - 1; - BT_LIB_LOGV("Added \"source to sink component ports connected\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_filter_filter_component_ports_connected_listener( - struct bt_graph *graph, - bt_graph_filter_filter_component_ports_connected_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_ports_connected listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (ports_connected_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.filter_filter_ports_connected, - listener); - listener_id = graph->listeners.filter_filter_ports_connected->len - 1; - BT_LIB_LOGV("Added \"filter to filter component ports connected\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -enum bt_graph_status -bt_graph_add_filter_sink_component_ports_connected_listener( - struct bt_graph *graph, - bt_graph_filter_sink_component_ports_connected_listener_func func, - bt_graph_listener_removed_func listener_removed, void *data, - int *out_listener_id) -{ - struct bt_graph_listener_ports_connected listener = { - .base = { - .removed = listener_removed, - .data = data, - }, - .func = (ports_connected_func_t) func, - }; - int listener_id; - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(func, "Listener"); - BT_ASSERT_PRE_NON_NULL(func, "\"Listener removed\" listener"); - BT_ASSERT_PRE(!graph->in_remove_listener, - "Graph currently executing a \"listener removed\" listener: " - "%!+g", graph); - g_array_append_val(graph->listeners.filter_sink_ports_connected, - listener); - listener_id = graph->listeners.filter_sink_ports_connected->len - 1; - BT_LIB_LOGV("Added \"filter to sink component ports connected\" listener to graph: " - "%![graph-]+g, listener-addr=%p, id=%d", graph, listener, - listener_id); - - if (listener_id) { - *out_listener_id = listener_id; - } - - return BT_GRAPH_STATUS_OK; -} - -BT_HIDDEN -enum bt_graph_listener_status bt_graph_notify_port_added( - struct bt_graph *graph, struct bt_port *port) -{ - uint64_t i; - GArray *listeners; - struct bt_component *comp; - enum bt_graph_listener_status status = BT_GRAPH_LISTENER_STATUS_OK; - - BT_ASSERT(graph); - BT_ASSERT(port); - BT_LIB_LOGV("Notifying graph listeners that a port was added: " - "%![graph-]+g, %![port-]+p", graph, port); - comp = bt_port_borrow_component_inline(port); - BT_ASSERT(comp); - - switch (comp->class->type) { - case BT_COMPONENT_CLASS_TYPE_SOURCE: - { - switch (port->type) { - case BT_PORT_TYPE_OUTPUT: - listeners = graph->listeners.source_output_port_added; - break; - default: - abort(); - } - - break; - } - case BT_COMPONENT_CLASS_TYPE_FILTER: - { - switch (port->type) { - case BT_PORT_TYPE_INPUT: - listeners = graph->listeners.filter_input_port_added; - break; - case BT_PORT_TYPE_OUTPUT: - listeners = graph->listeners.filter_output_port_added; - break; - default: - abort(); - } - - break; - } - case BT_COMPONENT_CLASS_TYPE_SINK: - { - switch (port->type) { - case BT_PORT_TYPE_INPUT: - listeners = graph->listeners.sink_input_port_added; - break; - default: - abort(); - } - - break; - } - default: - abort(); - } - - for (i = 0; i < listeners->len; i++) { - struct bt_graph_listener_port_added *listener = - &g_array_index(listeners, - struct bt_graph_listener_port_added, i); - - - BT_ASSERT(listener->func); - status = listener->func(comp, port, listener->base.data); - if (status != BT_GRAPH_LISTENER_STATUS_OK) { - goto end; - } - } - -end: - return status; -} - -BT_HIDDEN -enum bt_graph_listener_status bt_graph_notify_ports_connected( - struct bt_graph *graph, struct bt_port *upstream_port, - struct bt_port *downstream_port) -{ - uint64_t i; - GArray *listeners; - struct bt_component *upstream_comp; - struct bt_component *downstream_comp; - enum bt_graph_listener_status status = BT_GRAPH_LISTENER_STATUS_OK; - - BT_ASSERT(graph); - BT_ASSERT(upstream_port); - BT_ASSERT(downstream_port); - BT_LIB_LOGV("Notifying graph listeners that ports were connected: " - "%![graph-]+g, %![up-port-]+p, %![down-port-]+p", - graph, upstream_port, downstream_port); - upstream_comp = bt_port_borrow_component_inline(upstream_port); - BT_ASSERT(upstream_comp); - downstream_comp = bt_port_borrow_component_inline(downstream_port); - BT_ASSERT(downstream_comp); - - switch (upstream_comp->class->type) { - case BT_COMPONENT_CLASS_TYPE_SOURCE: - { - switch (downstream_comp->class->type) { - case BT_COMPONENT_CLASS_TYPE_FILTER: - listeners = - graph->listeners.source_filter_ports_connected; - break; - case BT_COMPONENT_CLASS_TYPE_SINK: - listeners = - graph->listeners.source_sink_ports_connected; - break; - default: - abort(); - } - - break; - } - case BT_COMPONENT_CLASS_TYPE_FILTER: - { - switch (downstream_comp->class->type) { - case BT_COMPONENT_CLASS_TYPE_FILTER: - listeners = - graph->listeners.filter_filter_ports_connected; - break; - case BT_COMPONENT_CLASS_TYPE_SINK: - listeners = - graph->listeners.filter_sink_ports_connected; - break; - default: - abort(); - } - - break; - } - default: - abort(); - } - - for (i = 0; i < listeners->len; i++) { - struct bt_graph_listener_ports_connected *listener = - &g_array_index(listeners, - struct bt_graph_listener_ports_connected, i); - - BT_ASSERT(listener->func); - status = listener->func(upstream_comp, downstream_comp, - upstream_port, downstream_port, listener->base.data); - if (status != BT_GRAPH_LISTENER_STATUS_OK) { - goto end; - } - } - -end: - return status; -} - -enum bt_graph_status bt_graph_cancel(struct bt_graph *graph) -{ - - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - graph->canceled = true; - BT_LIB_LOGV("Canceled graph: %!+i", graph); - return BT_GRAPH_STATUS_OK; -} - -bt_bool bt_graph_is_canceled(const struct bt_graph *graph) -{ - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - return graph->canceled ? BT_TRUE : BT_FALSE; -} - -BT_HIDDEN -void bt_graph_remove_connection(struct bt_graph *graph, - struct bt_connection *connection) -{ - BT_ASSERT(graph); - BT_ASSERT(connection); - BT_LIB_LOGV("Removing graph's connection: %![graph-]+g, %![conn-]+x", - graph, connection); - g_ptr_array_remove(graph->connections, connection); -} - -BT_ASSERT_PRE_FUNC -static inline -bool component_name_exists(struct bt_graph *graph, const char *name) -{ - bool exists = false; - uint64_t i; - - for (i = 0; i < graph->components->len; i++) { - struct bt_component *other_comp = graph->components->pdata[i]; - - if (strcmp(name, bt_component_get_name(other_comp)) == 0) { - BT_ASSERT_PRE_MSG("Another component with the same name already exists in the graph: " - "%![other-comp-]+c, name=\"%s\"", - other_comp, name); - exists = true; - goto end; - } - } - -end: - return exists; -} - -static -enum bt_graph_status add_component_with_init_method_data( - struct bt_graph *graph, - struct bt_component_class *comp_cls, - comp_init_method_t init_method, - const char *name, const struct bt_value *params, - void *init_method_data, struct bt_component **user_component) -{ - enum bt_graph_status graph_status = BT_GRAPH_STATUS_OK; - enum bt_self_component_status comp_status; - struct bt_component *component = NULL; - int ret; - bool init_can_consume; - struct bt_value *new_params = NULL; - - BT_ASSERT(comp_cls); - BT_ASSERT_PRE_NON_NULL(graph, "Graph"); - BT_ASSERT_PRE_NON_NULL(name, "Name"); - BT_ASSERT_PRE(!graph->canceled, "Graph is canceled: %!+g", graph); - BT_ASSERT_PRE( - graph->config_state == BT_GRAPH_CONFIGURATION_STATE_CONFIGURING, - "Graph is not in the \"configuring\" state: %!+g", graph); - BT_ASSERT_PRE(!component_name_exists(graph, name), - "Duplicate component name: %!+g, name=\"%s\"", graph, name); - BT_ASSERT_PRE(!params || bt_value_is_map(params), - "Parameter value is not a map value: %!+v", params); - init_can_consume = graph->can_consume; - bt_graph_set_can_consume(graph, false); - BT_LIB_LOGD("Adding component to graph: " - "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, " - "init-method-data-addr=%p", - graph, comp_cls, name, params, init_method_data); - - if (!params) { - new_params = bt_value_map_create(); - if (!new_params) { - BT_LOGE_STR("Cannot create map value object."); - graph_status = BT_GRAPH_STATUS_NOMEM; - goto end; - } - - params = new_params; - } - - ret = bt_component_create(comp_cls, name, &component); - if (ret) { - BT_LOGE("Cannot create empty component object: ret=%d", - ret); - graph_status = BT_GRAPH_STATUS_NOMEM; - goto end; - } - - /* - * The user's initialization method needs to see that this - * component is part of the graph. If the user method fails, we - * immediately remove the component from the graph's components. - */ - g_ptr_array_add(graph->components, component); - bt_component_set_graph(component, graph); - bt_value_freeze(params); - - if (init_method) { - BT_LOGD_STR("Calling user's initialization method."); - comp_status = init_method(component, params, init_method_data); - BT_LOGD("User method returned: status=%s", - bt_self_component_status_string(comp_status)); - if (comp_status != BT_SELF_COMPONENT_STATUS_OK) { - BT_LOGW_STR("Initialization method failed."); - graph_status = (int) comp_status; - bt_component_set_graph(component, NULL); - g_ptr_array_remove_fast(graph->components, component); - goto end; - } - } - - /* - * Mark the component as initialized so that its finalization - * method is called when it is destroyed. - */ - component->initialized = true; - - /* - * If it's a sink component, it needs to be part of the graph's - * sink queue to be consumed by bt_graph_consume(). - */ - if (bt_component_is_sink(component)) { - graph->has_sink = true; - g_queue_push_tail(graph->sinks_to_consume, component); - } - - /* - * Freeze the component class now that it's instantiated at - * least once. - */ - BT_LOGD_STR("Freezing component class."); - bt_component_class_freeze(comp_cls); - BT_LIB_LOGD("Added component to graph: " - "%![graph-]+g, %![cc-]+C, name=\"%s\", %![params-]+v, " - "init-method-data-addr=%p, %![comp-]+c", - graph, comp_cls, name, params, init_method_data, component); - - if (user_component) { - /* Move reference to user */ - *user_component = component; - component = NULL; - } - -end: - if (graph_status != BT_GRAPH_STATUS_OK) { - bt_graph_make_faulty(graph); - } - - bt_object_put_ref(component); - bt_object_put_ref(new_params); - (void) init_can_consume; - bt_graph_set_can_consume(graph, init_can_consume); - return graph_status; -} - -enum bt_graph_status -bt_graph_add_source_component_with_init_method_data( - struct bt_graph *graph, - const struct bt_component_class_source *comp_cls, - const char *name, const struct bt_value *params, - void *init_method_data, - const struct bt_component_source **component) -{ - BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); - return add_component_with_init_method_data(graph, - (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, - name, params, init_method_data, (void *) component); -} - -enum bt_graph_status bt_graph_add_source_component( - struct bt_graph *graph, - const struct bt_component_class_source *comp_cls, - const char *name, const struct bt_value *params, - const struct bt_component_source **component) -{ - return bt_graph_add_source_component_with_init_method_data( - graph, comp_cls, name, params, NULL, component); -} - -enum bt_graph_status -bt_graph_add_filter_component_with_init_method_data( - struct bt_graph *graph, - const struct bt_component_class_filter *comp_cls, - const char *name, const struct bt_value *params, - void *init_method_data, - const struct bt_component_filter **component) -{ - BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); - return add_component_with_init_method_data(graph, - (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, - name, params, init_method_data, (void *) component); -} - -enum bt_graph_status bt_graph_add_filter_component( - struct bt_graph *graph, - const struct bt_component_class_filter *comp_cls, - const char *name, const struct bt_value *params, - const struct bt_component_filter **component) -{ - return bt_graph_add_filter_component_with_init_method_data( - graph, comp_cls, name, params, NULL, component); -} - -enum bt_graph_status -bt_graph_add_sink_component_with_init_method_data( - struct bt_graph *graph, - const struct bt_component_class_sink *comp_cls, - const char *name, const struct bt_value *params, - void *init_method_data, - const struct bt_component_sink **component) -{ - BT_ASSERT_PRE_NON_NULL(comp_cls, "Component class"); - return add_component_with_init_method_data(graph, - (void *) comp_cls, (comp_init_method_t) comp_cls->methods.init, - name, params, init_method_data, (void *) component); -} - -enum bt_graph_status bt_graph_add_sink_component( - struct bt_graph *graph, - const struct bt_component_class_sink *comp_cls, - const char *name, const struct bt_value *params, - const struct bt_component_sink **component) -{ - return bt_graph_add_sink_component_with_init_method_data( - graph, comp_cls, name, params, NULL, component); -} - -BT_HIDDEN -int bt_graph_remove_unconnected_component(struct bt_graph *graph, - struct bt_component *component) -{ - bool init_can_consume; - uint64_t count; - uint64_t i; - int ret = 0; - - BT_ASSERT(graph); - BT_ASSERT(component); - BT_ASSERT(component->base.ref_count == 0); - BT_ASSERT(bt_component_borrow_graph(component) == graph); - - init_can_consume = graph->can_consume; - count = bt_component_get_input_port_count(component); - - for (i = 0; i < count; i++) { - struct bt_port *port = (void *) - bt_component_borrow_input_port_by_index(component, i); - - BT_ASSERT(port); - - if (bt_port_is_connected(port)) { - BT_LIB_LOGW("Cannot remove component from graph: " - "an input port is connected: " - "%![graph-]+g, %![comp-]+c, %![port-]+p", - graph, component, port); - goto error; - } - } - - count = bt_component_get_output_port_count(component); - - for (i = 0; i < count; i++) { - struct bt_port *port = (void *) - bt_component_borrow_output_port_by_index(component, i); - - BT_ASSERT(port); - - if (bt_port_is_connected(port)) { - BT_LIB_LOGW("Cannot remove component from graph: " - "an output port is connected: " - "%![graph-]+g, %![comp-]+c, %![port-]+p", - graph, component, port); - goto error; - } - } - - bt_graph_set_can_consume(graph, false); - - /* Possibly remove from sinks to consume */ - (void) g_queue_remove(graph->sinks_to_consume, component); - - if (graph->sinks_to_consume->length == 0) { - graph->has_sink = false; - } - - /* - * This calls bt_object_try_spec_release() on the component, and - * since its reference count is 0, its destructor is called. Its - * destructor calls the user's finalization method (if set). - */ - g_ptr_array_remove(graph->components, component); - goto end; - -error: - ret = -1; - -end: - (void) init_can_consume; - bt_graph_set_can_consume(graph, init_can_consume); - return ret; -} - -BT_HIDDEN -void bt_graph_add_message(struct bt_graph *graph, - struct bt_message *msg) -{ - BT_ASSERT(graph); - BT_ASSERT(msg); - - /* - * It's okay not to take a reference because, when a - * message's reference count drops to 0, either: - * - * * It is recycled back to one of this graph's pool. - * * It is destroyed because it doesn't have any link to any - * graph, which means the original graph is already destroyed. - */ - g_ptr_array_add(graph->messages, msg); -} - -void bt_graph_get_ref(const struct bt_graph *graph) -{ - bt_object_get_ref(graph); -} - -void bt_graph_put_ref(const struct bt_graph *graph) -{ - bt_object_put_ref(graph); -}