X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Flib%2Fgraph%2Fgraph.c;h=b545a8ef234b247e9a0731902c4fb9d732bd6d41;hb=43c59509042845f8d42c3e99ec74d45fa2dc0908;hp=4b87d73550d3c3d67a7918a1d8a98e89b6a2403e;hpb=578e048b5debf169e286e5b5cc747b5d6c16886d;p=babeltrace.git

diff --git a/src/lib/graph/graph.c b/src/lib/graph/graph.c
index 4b87d735..b545a8ef 100644
--- a/src/lib/graph/graph.c
+++ b/src/lib/graph/graph.c
@@ -21,79 +21,51 @@
  * SOFTWARE.
  */
 
-#define BT_LOG_TAG "GRAPH"
-#include "lib/lib-logging.h"
+#define BT_LOG_TAG "LIB/GRAPH"
+#include "lib/logging.h"
 
 #include "common/assert.h"
 #include "lib/assert-pre.h"
+#include "lib/assert-post.h"
 #include <babeltrace2/graph/graph.h>
-#include <babeltrace2/graph/graph-const.h>
-#include <babeltrace2/graph/component-source-const.h>
-#include <babeltrace2/graph/component-filter-const.h>
-#include <babeltrace2/graph/port-const.h>
+#include <babeltrace2/graph/component.h>
+#include <babeltrace2/graph/port.h>
 #include "lib/graph/message/message.h"
 #include "compat/compiler.h"
 #include "common/common.h"
 #include <babeltrace2/types.h>
 #include <babeltrace2/value.h>
-#include <babeltrace2/value-const.h>
 #include "lib/value.h"
 #include <unistd.h>
+#include <stdbool.h>
 #include <glib.h>
 
+#include "component-class-sink-simple.h"
 #include "component.h"
 #include "component-sink.h"
 #include "connection.h"
 #include "graph.h"
+#include "interrupter.h"
 #include "message/event.h"
 #include "message/packet.h"
 
-typedef enum bt_graph_listener_status (*port_added_func_t)(
-		const void *, const void *, void *);
+typedef enum bt_graph_listener_func_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;
-};
+typedef enum bt_component_class_initialize_method_status
+(*comp_init_method_t)(const void *, void *, const void *, void *);
 
 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;
+	void *data;
 };
 
 #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); \
-			}						\
+			BT_LIB_LOGE_APPEND_CAUSE(			\
+				"Failed to allocate one GArray.");	\
 		}							\
 	} while (0)
 
@@ -128,32 +100,9 @@ void destroy_graph(struct bt_object *obj)
 	 * 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);
+	BT_LIB_LOGI("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);
+	graph->config_state = BT_GRAPH_CONFIGURATION_STATE_DESTROYING;
 
 	if (graph->messages) {
 		g_ptr_array_free(graph->messages, TRUE);
@@ -172,6 +121,14 @@ void destroy_graph(struct bt_object *obj)
 		graph->components = NULL;
 	}
 
+	if (graph->interrupters) {
+		BT_LOGD_STR("Putting interrupters.");
+		g_ptr_array_free(graph->interrupters, TRUE);
+		graph->interrupters = NULL;
+	}
+
+	BT_OBJECT_PUT_REF_AND_RESET(graph->default_interrupter);
+
 	if (graph->sinks_to_consume) {
 		g_queue_free(graph->sinks_to_consume);
 		graph->sinks_to_consume = NULL;
@@ -197,30 +154,6 @@ void destroy_graph(struct bt_object *obj)
 		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);
@@ -254,34 +187,40 @@ 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 *bt_graph_create(uint64_t mip_version)
 {
 	struct bt_graph *graph;
 	int ret;
 
-	BT_LOGD_STR("Creating graph object.");
+	BT_ASSERT_PRE_NO_ERROR();
+	BT_ASSERT_PRE(mip_version <= bt_get_maximal_mip_version(),
+		"Unknown MIP version: mip-version=%" PRIu64 ", "
+		"max-mip-version=%" PRIu64,
+		mip_version, bt_get_maximal_mip_version());
+	BT_LOGI_STR("Creating graph object.");
 	graph = g_new0(struct bt_graph, 1);
 	if (!graph) {
-		BT_LOGE_STR("Failed to allocate one graph.");
+		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one graph.");
 		goto end;
 	}
 
 	bt_object_init_shared(&graph->base, destroy_graph);
+	graph->mip_version = mip_version;
 	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.");
+		BT_LIB_LOGE_APPEND_CAUSE("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.");
+		BT_LIB_LOGE_APPEND_CAUSE("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.");
+		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GQueue.");
 		goto error;
 	}
 
@@ -290,7 +229,6 @@ struct bt_graph *bt_graph_create(void)
 		graph->listeners.source_output_port_added);
 
 	if (!graph->listeners.source_output_port_added) {
-		ret = -1;
 		goto error;
 	}
 
@@ -298,7 +236,6 @@ struct bt_graph *bt_graph_create(void)
 		graph->listeners.filter_output_port_added);
 
 	if (!graph->listeners.filter_output_port_added) {
-		ret = -1;
 		goto error;
 	}
 
@@ -306,7 +243,6 @@ struct bt_graph *bt_graph_create(void)
 		graph->listeners.filter_input_port_added);
 
 	if (!graph->listeners.filter_input_port_added) {
-		ret = -1;
 		goto error;
 	}
 
@@ -314,48 +250,31 @@ struct bt_graph *bt_graph_create(void)
 		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;
+	graph->interrupters = g_ptr_array_new_with_free_func(
+		(GDestroyNotify) bt_object_put_ref_no_null_check);
+	if (!graph->interrupters) {
+		BT_LIB_LOGE_APPEND_CAUSE("Failed to allocate one GPtrArray.");
 		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;
+	graph->default_interrupter = bt_interrupter_create();
+	if (!graph->default_interrupter) {
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"Failed to create one interrupter object.");
 		goto error;
 	}
 
+	bt_graph_add_interrupter(graph, graph->default_interrupter);
 	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",
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"Failed to initialize event message pool: ret=%d",
 			ret);
 		goto error;
 	}
@@ -365,7 +284,8 @@ struct bt_graph *bt_graph_create(void)
 		(bt_object_pool_destroy_object_func) destroy_message_packet_begin,
 		graph);
 	if (ret) {
-		BT_LOGE("Failed to initialize packet beginning message pool: ret=%d",
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"Failed to initialize packet beginning message pool: ret=%d",
 			ret);
 		goto error;
 	}
@@ -375,14 +295,15 @@ struct bt_graph *bt_graph_create(void)
 		(bt_object_pool_destroy_object_func) destroy_message_packet_end,
 		graph);
 	if (ret) {
-		BT_LOGE("Failed to initialize packet end message pool: ret=%d",
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"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);
+	BT_LIB_LOGI("Created graph object: %!+g", graph);
 
 end:
 	return (void *) graph;
@@ -392,26 +313,25 @@ error:
 	goto end;
 }
 
-enum bt_graph_status bt_graph_connect_ports(
+enum bt_graph_connect_ports_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;
+	enum bt_graph_connect_ports_status status = BT_FUNC_STATUS_OK;
 	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;
+	enum bt_component_class_port_connected_method_status port_connected_status;
 	bool init_can_consume;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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);
@@ -426,7 +346,7 @@ enum bt_graph_status bt_graph_connect_ports(
 		"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: "
+	BT_LIB_LOGI("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);
@@ -435,51 +355,12 @@ enum bt_graph_status bt_graph_connect_ports(
 	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;
+		BT_LIB_LOGE_APPEND_CAUSE("Cannot create connection object.");
+		status = BT_FUNC_STATUS_MEMORY_ERROR;
 		goto end;
 	}
 
@@ -496,17 +377,22 @@ enum bt_graph_status bt_graph_connect_ports(
 	 */
 	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,
+	port_connected_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);
+	if (port_connected_status != BT_FUNC_STATUS_OK) {
+		if (port_connected_status < 0) {
+			BT_LIB_LOGW_APPEND_CAUSE(
+				"Upstream component's \"port connected\" method failed: "
+				"status=%s, %![graph-]+g, %![up-comp-]+c, "
+				"%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p",
+				bt_common_func_status_string(
+					port_connected_status),
+				graph, upstream_component, downstream_component,
+				upstream_port, downstream_port);
+		}
+
 		bt_connection_end(connection, true);
-		status = (int) component_status;
+		status = (int) port_connected_status;
 		goto end;
 	}
 
@@ -514,34 +400,28 @@ enum bt_graph_status bt_graph_connect_ports(
 	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,
+	port_connected_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);
+	if (port_connected_status != BT_FUNC_STATUS_OK) {
+		if (port_connected_status < 0) {
+			BT_LIB_LOGW_APPEND_CAUSE(
+				"Downstream component's \"port connected\" method failed: "
+				"status=%s, %![graph-]+g, %![up-comp-]+c, "
+				"%![down-comp-]+c, %![up-port-]+p, %![down-port-]+p",
+				bt_common_func_status_string(
+					port_connected_status),
+				graph, upstream_component, downstream_component,
+				upstream_port, downstream_port);
+		}
+
 		bt_connection_end(connection, true);
-		status = (int) component_status;
+		status = (int) port_connected_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: "
+	BT_LIB_LOGI("Connected component ports within graph: "
 		"%![graph-]+g, %![up-comp-]+c, %![down-comp-]+c, "
 		"%![up-port-]+p, %![down-port-]+p",
 		graph, upstream_component, downstream_component,
@@ -550,11 +430,10 @@ enum bt_graph_status bt_graph_connect_ports(
 	if (user_connection) {
 		/* Move reference to user */
 		*user_connection = connection;
-		connection = NULL;
 	}
 
 end:
-	if (status != BT_GRAPH_STATUS_OK) {
+	if (status != BT_FUNC_STATUS_OK) {
 		bt_graph_make_faulty(graph);
 	}
 
@@ -565,35 +444,43 @@ end:
 }
 
 static inline
-enum bt_graph_status consume_graph_sink(struct bt_component_sink *comp)
+int consume_graph_sink(struct bt_component_sink *comp)
 {
-	enum bt_self_component_status comp_status;
+	enum bt_component_class_sink_consume_method_status consume_status;
 	struct bt_component_class_sink *sink_class = NULL;
 
-	BT_ASSERT(comp);
+	BT_ASSERT_DBG(comp);
 	sink_class = (void *) comp->parent.class;
-	BT_ASSERT(sink_class->methods.consume);
+	BT_ASSERT_DBG(sink_class->methods.consume);
 	BT_LIB_LOGD("Calling user's consume method: %!+c", comp);
-	comp_status = sink_class->methods.consume((void *) comp);
+	consume_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,
+		bt_common_func_status_string(consume_status));
+	BT_ASSERT_POST_DEV(consume_status == BT_FUNC_STATUS_OK ||
+		consume_status == BT_FUNC_STATUS_END ||
+		consume_status == BT_FUNC_STATUS_AGAIN ||
+		consume_status == BT_FUNC_STATUS_ERROR ||
+		consume_status == BT_FUNC_STATUS_MEMORY_ERROR,
 		"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.");
+		"status=%s", bt_common_func_status_string(consume_status));
+	BT_ASSERT_POST_DEV_NO_ERROR_IF_NO_ERROR_STATUS(consume_status);
+	if (consume_status) {
+		if (consume_status < 0) {
+			BT_LIB_LOGW_APPEND_CAUSE(
+				"Component's \"consume\" method failed: "
+				"status=%s, %![comp-]+c",
+				bt_common_func_status_string(consume_status),
+				comp);
+		}
+
 		goto end;
 	}
 
-	BT_LIB_LOGV("Consumed from sink: %![comp-]+c, status=%s",
-		comp, bt_self_component_status_string(comp_status));
+	BT_LIB_LOGD("Consumed from sink: %![comp-]+c, status=%s",
+		comp, bt_common_func_status_string(consume_status));
 
 end:
-	return (int) comp_status;
+	return consume_status;
 }
 
 /*
@@ -602,14 +489,14 @@ end:
  * still something to consume afterwards.
  */
 static inline
-enum bt_graph_status consume_sink_node(struct bt_graph *graph, GList *node)
+int consume_sink_node(struct bt_graph *graph, GList *node)
 {
-	enum bt_graph_status status;
+	int status;
 	struct bt_component_sink *sink;
 
 	sink = node->data;
 	status = consume_graph_sink(sink);
-	if (unlikely(status != BT_GRAPH_STATUS_END)) {
+	if (G_UNLIKELY(status != BT_FUNC_STATUS_END)) {
 		g_queue_push_tail_link(graph->sinks_to_consume, node);
 		goto end;
 	}
@@ -619,42 +506,43 @@ enum bt_graph_status consume_sink_node(struct bt_graph *graph, GList *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;
+		status = BT_FUNC_STATUS_OK;
 		goto end;
 	}
 
 end:
-	BT_LIB_LOGV("Consumed sink node: %![comp-]+c, status=%s",
-		sink, bt_graph_status_string(status));
+	BT_LIB_LOGD("Consumed sink node: %![comp-]+c, status=%s",
+		sink, bt_common_func_status_string(status));
 	return status;
 }
 
 BT_HIDDEN
-enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph,
+int bt_graph_consume_sink_no_check(struct bt_graph *graph,
 		struct bt_component_sink *sink)
 {
-	enum bt_graph_status status;
+	int 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);
+	BT_LIB_LOGD("Making specific sink consume: %![comp-]+c", sink);
+	BT_ASSERT_DBG(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;
+		BT_LOGD_STR("Graph's sink queue is empty: end of graph.");
+		status = BT_FUNC_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;
+		BT_LIB_LOGD("Sink component is not marked as consumable: "
+			"component sink is ended: %![comp-]+c", sink);
+		status = BT_FUNC_STATUS_END;
 		goto end;
 	}
 
 	sink_node = g_queue_pop_nth_link(graph->sinks_to_consume, index);
-	BT_ASSERT(sink_node);
+	BT_ASSERT_DBG(sink_node);
 	status = consume_sink_node(graph, sink_node);
 
 end:
@@ -662,44 +550,45 @@ end:
 }
 
 static inline
-enum bt_graph_status consume_no_check(struct bt_graph *graph)
+int consume_no_check(struct bt_graph *graph)
 {
-	enum bt_graph_status status = BT_GRAPH_STATUS_OK;
+	int status = BT_FUNC_STATUS_OK;
 	struct bt_component *sink;
 	GList *current_node;
 
-	BT_ASSERT_PRE(graph->has_sink,
+	BT_ASSERT_PRE_DEV(graph->has_sink,
 		"Graph has no sink component: %!+g", graph);
-	BT_LIB_LOGV("Making next sink consume: %![graph-]+g", graph);
+	BT_LIB_LOGD("Making next sink component 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;
+	if (G_UNLIKELY(g_queue_is_empty(graph->sinks_to_consume))) {
+		BT_LOGD_STR("Graph's sink queue is empty: end of graph.");
+		status = BT_FUNC_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);
+	BT_LIB_LOGD("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_run_once_status bt_graph_run_once(struct bt_graph *graph)
 {
-	enum bt_graph_status status;
+	enum bt_graph_run_once_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,
+	BT_ASSERT_PRE_NO_ERROR();
+	BT_ASSERT_PRE_DEV_NON_NULL(graph, "Graph");
+	BT_ASSERT_PRE_DEV(graph->can_consume,
 		"Cannot consume graph in its current state: %!+g", graph);
-	BT_ASSERT_PRE(graph->config_state != BT_GRAPH_CONFIGURATION_STATE_FAULTY,
+	BT_ASSERT_PRE_DEV(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)) {
+	if (G_UNLIKELY(status)) {
 		/* bt_graph_configure() logs errors */
 		goto end;
 	}
@@ -711,41 +600,41 @@ end:
 	return status;
 }
 
-enum bt_graph_status bt_graph_run(struct bt_graph *graph)
+enum bt_graph_run_status bt_graph_run(struct bt_graph *graph)
 {
-	enum bt_graph_status status;
+	enum bt_graph_run_status status;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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)) {
+	if (G_UNLIKELY(status)) {
 		/* bt_graph_configure() logs errors */
 		goto end;
 	}
 
-	BT_LIB_LOGV("Running graph: %!+g", graph);
+	BT_LIB_LOGI("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.
+		 * Check if the graph is interrupted at each iteration.
+		 * If the graph was interrupted by another thread or by
+		 * a signal handler, this is NOT a warning nor an error;
+		 * it was intentional: log with an INFO level only.
 		 */
-		if (unlikely(graph->canceled)) {
-			BT_LIB_LOGD("Stopping the graph: graph is canceled: "
-				"%!+g", graph);
-			status = BT_GRAPH_STATUS_CANCELED;
+		if (G_UNLIKELY(bt_graph_is_interrupted(graph))) {
+			BT_LIB_LOGI("Stopping the graph: "
+				"graph was interrupted: %!+g", graph);
+			status = BT_FUNC_STATUS_AGAIN;
 			goto end;
 		}
 
 		status = consume_no_check(graph);
-		if (unlikely(status == BT_GRAPH_STATUS_AGAIN)) {
+		if (G_UNLIKELY(status == BT_FUNC_STATUS_AGAIN)) {
 			/*
 			 * If AGAIN is received and there are multiple
 			 * sinks, go ahead and consume from the next
@@ -758,47 +647,47 @@ enum bt_graph_status bt_graph_run(struct bt_graph *graph)
 			 * sleep for an arbitrary amount of time.
 			 */
 			if (graph->sinks_to_consume->length > 1) {
-				status = BT_GRAPH_STATUS_OK;
+				status = BT_FUNC_STATUS_OK;
 			}
 		}
-	} while (status == BT_GRAPH_STATUS_OK);
+	} while (status == BT_FUNC_STATUS_OK);
 
-	if (g_queue_is_empty(graph->sinks_to_consume)) {
-		status = BT_GRAPH_STATUS_END;
+	if (status == BT_FUNC_STATUS_END) {
+		/*
+		 * The last call to consume_no_check() returned
+		 * `BT_FUNC_STATUS_END`, but bt_graph_run() has no
+		 * `BT_GRAPH_RUN_STATUS_END` status: replace with
+		 * `BT_GRAPH_RUN_STATUS_OK` (success: graph ran
+		 * completely).
+		 */
+		status = BT_FUNC_STATUS_OK;
 	}
 
 end:
-	BT_LIB_LOGV("Graph ran: %![graph-]+g, status=%s", graph,
-		bt_graph_status_string(status));
+	BT_LIB_LOGI("Graph ran: %![graph-]+g, status=%s", graph,
+		bt_common_func_status_string(status));
 	bt_graph_set_can_consume(graph, true);
 	return status;
 }
 
-enum bt_graph_status
+enum bt_graph_add_listener_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)
+		void *data, bt_listener_id *out_listener_id)
 {
 	struct bt_graph_listener_port_added listener = {
-		.base = {
-			.removed = listener_removed,
-			.data = data,
-		},
 		.func = (port_added_func_t) func,
+		.data = data,
 	};
-	int listener_id;
+	bt_listener_id listener_id;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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: "
+	BT_LIB_LOGD("Added \"source component output port added\" listener to graph: "
 		"%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
 		listener_id);
 
@@ -806,34 +695,27 @@ bt_graph_add_source_component_output_port_added_listener(
 		*out_listener_id = listener_id;
 	}
 
-	return BT_GRAPH_STATUS_OK;
+	return BT_FUNC_STATUS_OK;
 }
 
-enum bt_graph_status
+enum bt_graph_add_listener_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)
+		void *data, bt_listener_id *out_listener_id)
 {
 	struct bt_graph_listener_port_added listener = {
-		.base = {
-			.removed = listener_removed,
-			.data = data,
-		},
 		.func = (port_added_func_t) func,
+		.data = data,
 	};
-	int listener_id;
+	bt_listener_id listener_id;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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: "
+	BT_LIB_LOGD("Added \"filter component output port added\" listener to graph: "
 		"%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
 		listener_id);
 
@@ -841,34 +723,27 @@ bt_graph_add_filter_component_output_port_added_listener(
 		*out_listener_id = listener_id;
 	}
 
-	return BT_GRAPH_STATUS_OK;
+	return BT_FUNC_STATUS_OK;
 }
 
-enum bt_graph_status
+enum bt_graph_add_listener_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)
+		void *data, bt_listener_id *out_listener_id)
 {
 	struct bt_graph_listener_port_added listener = {
-		.base = {
-			.removed = listener_removed,
-			.data = data,
-		},
 		.func = (port_added_func_t) func,
+		.data = data,
 	};
-	int listener_id;
+	bt_listener_id listener_id;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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: "
+	BT_LIB_LOGD("Added \"filter component input port added\" listener to graph: "
 		"%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
 		listener_id);
 
@@ -876,142 +751,27 @@ bt_graph_add_filter_component_input_port_added_listener(
 		*out_listener_id = listener_id;
 	}
 
-	return BT_GRAPH_STATUS_OK;
+	return BT_FUNC_STATUS_OK;
 }
 
-enum bt_graph_status
+enum bt_graph_add_listener_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)
+		void *data, bt_listener_id *out_listener_id)
 {
 	struct bt_graph_listener_port_added listener = {
-		.base = {
-			.removed = listener_removed,
-			.data = data,
-		},
 		.func = (port_added_func_t) func,
+		.data = data,
 	};
-	int listener_id;
+	bt_listener_id listener_id;
 
+	BT_ASSERT_PRE_NO_ERROR();
 	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: "
+	BT_LIB_LOGD("Added \"sink component input port added\" listener to graph: "
 		"%![graph-]+g, listener-addr=%p, id=%d", graph, listener,
 		listener_id);
 
@@ -1019,57 +779,21 @@ bt_graph_add_filter_filter_component_ports_connected_listener(
 		*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;
+	return BT_FUNC_STATUS_OK;
 }
 
 BT_HIDDEN
-enum bt_graph_listener_status bt_graph_notify_port_added(
+enum bt_graph_listener_func_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;
+	enum bt_graph_listener_func_status status = BT_FUNC_STATUS_OK;
 
 	BT_ASSERT(graph);
 	BT_ASSERT(port);
-	BT_LIB_LOGV("Notifying graph listeners that a port was added: "
+	BT_LIB_LOGD("Notifying graph listeners that a port was added: "
 		"%![graph-]+g, %![port-]+p", graph, port);
 	comp = bt_port_borrow_component_inline(port);
 	BT_ASSERT(comp);
@@ -1082,7 +806,7 @@ enum bt_graph_listener_status bt_graph_notify_port_added(
 			listeners = graph->listeners.source_output_port_added;
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		break;
@@ -1097,7 +821,7 @@ enum bt_graph_listener_status bt_graph_notify_port_added(
 			listeners = graph->listeners.filter_output_port_added;
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		break;
@@ -1109,13 +833,13 @@ enum bt_graph_listener_status bt_graph_notify_port_added(
 			listeners = graph->listeners.sink_input_port_added;
 			break;
 		default:
-			abort();
+			bt_common_abort();
 		}
 
 		break;
 	}
 	default:
-		abort();
+		bt_common_abort();
 	}
 
 	for (i = 0; i < listeners->len; i++) {
@@ -1125,86 +849,9 @@ enum bt_graph_listener_status bt_graph_notify_port_added(
 
 
 		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) {
+		status = listener->func(comp, port, listener->data);
+		BT_ASSERT_POST_NO_ERROR_IF_NO_ERROR_STATUS(status);
+		if (status != BT_FUNC_STATUS_OK) {
 			goto end;
 		}
 	}
@@ -1213,33 +860,17 @@ 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",
+	BT_LIB_LOGD("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)
 {
@@ -1263,15 +894,16 @@ end:
 }
 
 static
-enum bt_graph_status add_component_with_init_method_data(
+int 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)
+		void *init_method_data, bt_logging_level log_level,
+		const struct bt_component **user_component)
 {
-	enum bt_graph_status graph_status = BT_GRAPH_STATUS_OK;
-	enum bt_self_component_status comp_status;
+	int status = BT_FUNC_STATUS_OK;
+	enum bt_component_class_initialize_method_status init_status;
 	struct bt_component *component = NULL;
 	int ret;
 	bool init_can_consume;
@@ -1280,7 +912,6 @@ enum bt_graph_status add_component_with_init_method_data(
 	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);
@@ -1290,27 +921,31 @@ enum bt_graph_status add_component_with_init_method_data(
 		"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);
+	BT_LIB_LOGI("Adding component to graph: "
+		"%![graph-]+g, %![cc-]+C, name=\"%s\", log-level=%s, "
+		"%![params-]+v, init-method-data-addr=%p",
+		graph, comp_cls, name,
+		bt_common_logging_level_string(log_level), 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;
+			BT_LIB_LOGE_APPEND_CAUSE(
+				"Cannot create empty map value object.");
+			status = BT_FUNC_STATUS_MEMORY_ERROR;
 			goto end;
 		}
 
 		params = new_params;
 	}
 
-	ret = bt_component_create(comp_cls, name, &component);
+	ret = bt_component_create(comp_cls, name, log_level, &component);
 	if (ret) {
-		BT_LOGE("Cannot create empty component object: ret=%d",
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"Cannot create empty component object: ret=%d",
 			ret);
-		graph_status = BT_GRAPH_STATUS_NOMEM;
+		status = BT_FUNC_STATUS_MEMORY_ERROR;
 		goto end;
 	}
 
@@ -1324,13 +959,25 @@ enum bt_graph_status add_component_with_init_method_data(
 	bt_value_freeze(params);
 
 	if (init_method) {
+		/*
+		 * There is no use for config objects right now, so just pass
+		 * NULL.
+		 */
 		BT_LOGD_STR("Calling user's initialization method.");
-		comp_status = init_method(component, params, init_method_data);
+		init_status = init_method(component, NULL, 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_common_func_status_string(init_status));
+		BT_ASSERT_POST_DEV_NO_ERROR_IF_NO_ERROR_STATUS(init_status);
+		if (init_status != BT_FUNC_STATUS_OK) {
+			if (init_status < 0) {
+				BT_LIB_LOGW_APPEND_CAUSE(
+					"Component initialization method failed: "
+					"status=%s, %![comp-]+c",
+					bt_common_func_status_string(init_status),
+					component);
+			}
+
+			status = init_status;
 			bt_component_set_graph(component, NULL);
 			g_ptr_array_remove_fast(graph->components, component);
 			goto end;
@@ -1345,7 +992,8 @@ enum bt_graph_status add_component_with_init_method_data(
 
 	/*
 	 * If it's a sink component, it needs to be part of the graph's
-	 * sink queue to be consumed by bt_graph_consume().
+	 * sink queue to be consumed by bt_graph_run() or
+	 * bt_graph_run_once().
 	 */
 	if (bt_component_is_sink(component)) {
 		graph->has_sink = true;
@@ -1358,19 +1006,20 @@ enum bt_graph_status add_component_with_init_method_data(
 	 */
 	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);
+	BT_LIB_LOGI("Added component to graph: "
+		"%![graph-]+g, %![cc-]+C, name=\"%s\", log-level=%s, "
+		"%![params-]+v, init-method-data-addr=%p, %![comp-]+c",
+		graph, comp_cls, name,
+		bt_common_logging_level_string(log_level), 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) {
+	if (status != BT_FUNC_STATUS_OK) {
 		bt_graph_make_faulty(graph);
 	}
 
@@ -1378,154 +1027,128 @@ end:
 	bt_object_put_ref(new_params);
 	(void) init_can_consume;
 	bt_graph_set_can_consume(graph, init_can_consume);
-	return graph_status;
+	return status;
 }
 
-enum bt_graph_status
-bt_graph_add_source_component_with_init_method_data(
+enum bt_graph_add_component_status
+bt_graph_add_source_component_with_initialize_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,
+		void *init_method_data, bt_logging_level log_level,
 		const struct bt_component_source **component)
 {
+	BT_ASSERT_PRE_NO_ERROR();
 	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);
+		name, params, init_method_data, log_level, (void *) component);
 }
 
-enum bt_graph_status bt_graph_add_source_component(
+enum bt_graph_add_component_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,
+		enum bt_logging_level log_level,
 		const struct bt_component_source **component)
 {
-	return bt_graph_add_source_component_with_init_method_data(
-		graph, comp_cls, name, params, NULL, component);
+	BT_ASSERT_PRE_NO_ERROR();
+	return bt_graph_add_source_component_with_initialize_method_data(
+		graph, comp_cls, name, params, NULL, log_level, component);
 }
 
-enum bt_graph_status
-bt_graph_add_filter_component_with_init_method_data(
+enum bt_graph_add_component_status
+bt_graph_add_filter_component_with_initialize_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,
+		void *init_method_data, enum bt_logging_level log_level,
 		const struct bt_component_filter **component)
 {
+	BT_ASSERT_PRE_NO_ERROR();
 	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);
+		name, params, init_method_data, log_level, (void *) component);
 }
 
-enum bt_graph_status bt_graph_add_filter_component(
+enum bt_graph_add_component_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,
+		enum bt_logging_level log_level,
 		const struct bt_component_filter **component)
 {
-	return bt_graph_add_filter_component_with_init_method_data(
-		graph, comp_cls, name, params, NULL, component);
+	BT_ASSERT_PRE_NO_ERROR();
+	return bt_graph_add_filter_component_with_initialize_method_data(
+		graph, comp_cls, name, params, NULL, log_level, component);
 }
 
-enum bt_graph_status
-bt_graph_add_sink_component_with_init_method_data(
+enum bt_graph_add_component_status
+bt_graph_add_sink_component_with_initialize_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,
+		void *init_method_data, enum bt_logging_level log_level,
 		const struct bt_component_sink **component)
 {
+	BT_ASSERT_PRE_NO_ERROR();
 	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);
+		name, params, init_method_data, log_level, (void *) component);
 }
 
-enum bt_graph_status bt_graph_add_sink_component(
+enum bt_graph_add_component_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,
+		enum bt_logging_level log_level,
 		const struct bt_component_sink **component)
 {
-	return bt_graph_add_sink_component_with_init_method_data(
-		graph, comp_cls, name, params, NULL, component);
+	BT_ASSERT_PRE_NO_ERROR();
+	return bt_graph_add_sink_component_with_initialize_method_data(
+		graph, comp_cls, name, params, NULL, log_level, component);
 }
 
-BT_HIDDEN
-int bt_graph_remove_unconnected_component(struct bt_graph *graph,
-		struct bt_component *component)
+enum bt_graph_add_component_status
+bt_graph_add_simple_sink_component(struct bt_graph *graph, const char *name,
+		bt_graph_simple_sink_component_initialize_func init_func,
+		bt_graph_simple_sink_component_consume_func consume_func,
+		bt_graph_simple_sink_component_finalize_func finalize_func,
+		void *user_data, const bt_component_sink **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);
+	enum bt_graph_add_component_status status;
+	struct bt_component_class_sink *comp_cls;
+	struct simple_sink_init_method_data init_method_data = {
+		.init_func = init_func,
+		.consume_func = consume_func,
+		.finalize_func = finalize_func,
+		.user_data = user_data,
+	};
 
-	/* 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;
-	}
+	BT_ASSERT_PRE_NO_ERROR();
 
 	/*
-	 * 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).
+	 * Other preconditions are checked by
+	 * bt_graph_add_sink_component_with_init_method_data().
 	 */
-	g_ptr_array_remove(graph->components, component);
-	goto end;
+	BT_ASSERT_PRE_NON_NULL(consume_func, "Consume function");
 
-error:
-	ret = -1;
+	comp_cls = bt_component_class_sink_simple_borrow();
+	if (!comp_cls) {
+		BT_LIB_LOGE_APPEND_CAUSE(
+			"Cannot borrow simple sink component class.");
+		status = BT_FUNC_STATUS_MEMORY_ERROR;
+		goto end;
+	}
+
+	status = bt_graph_add_sink_component_with_initialize_method_data(graph,
+		comp_cls, name, NULL, &init_method_data,
+		BT_LOGGING_LEVEL_NONE, component);
 
 end:
-	(void) init_can_consume;
-	bt_graph_set_can_consume(graph, init_can_consume);
-	return ret;
+	return status;
 }
 
 BT_HIDDEN
@@ -1546,6 +1169,32 @@ void bt_graph_add_message(struct bt_graph *graph,
 	g_ptr_array_add(graph->messages, msg);
 }
 
+BT_HIDDEN
+bool bt_graph_is_interrupted(const struct bt_graph *graph)
+{
+	BT_ASSERT_DBG(graph);
+	return bt_interrupter_array_any_is_set(graph->interrupters);
+}
+
+enum bt_graph_add_interrupter_status bt_graph_add_interrupter(
+		struct bt_graph *graph, const struct bt_interrupter *intr)
+{
+	BT_ASSERT_PRE_NO_ERROR();
+	BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+	BT_ASSERT_PRE_NON_NULL(intr, "Interrupter");
+	g_ptr_array_add(graph->interrupters, (void *) intr);
+	bt_object_get_ref_no_null_check(intr);
+	BT_LIB_LOGD("Added interrupter to graph: %![graph-]+g, %![intr-]+z",
+		graph, intr);
+	return BT_FUNC_STATUS_OK;
+}
+
+struct bt_interrupter *bt_graph_borrow_default_interrupter(bt_graph *graph)
+{
+	BT_ASSERT_PRE_NON_NULL(graph, "Graph");
+	return graph->default_interrupter;
+}
+
 void bt_graph_get_ref(const struct bt_graph *graph)
 {
 	bt_object_get_ref(graph);