+++ /dev/null
-/*
- * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
- * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * 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 <babeltrace2/lib-logging-internal.h>
-
-#include <babeltrace2/assert-internal.h>
-#include <babeltrace2/assert-pre-internal.h>
-#include <babeltrace2/graph/component-internal.h>
-#include <babeltrace2/graph/graph.h>
-#include <babeltrace2/graph/graph-const.h>
-#include <babeltrace2/graph/graph-internal.h>
-#include <babeltrace2/graph/connection-internal.h>
-#include <babeltrace2/graph/component-sink-internal.h>
-#include <babeltrace2/graph/component-source-const.h>
-#include <babeltrace2/graph/component-filter-const.h>
-#include <babeltrace2/graph/port-const.h>
-#include <babeltrace2/graph/message-internal.h>
-#include <babeltrace2/graph/message-event-internal.h>
-#include <babeltrace2/graph/message-packet-internal.h>
-#include <babeltrace2/compiler-internal.h>
-#include <babeltrace2/common-internal.h>
-#include <babeltrace2/types.h>
-#include <babeltrace2/value.h>
-#include <babeltrace2/value-const.h>
-#include <babeltrace2/value-internal.h>
-#include <unistd.h>
-#include <glib.h>
-
-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);
-}
projects / babeltrace.git / blobdiff