+BT_HIDDEN
+void bt_graph_remove_connection(struct bt_graph *graph,
+ struct bt_connection *connection);
+
+/*
+ * This only works with a component which is not connected at this
+ * point.
+ *
+ * Also the reference count of `component` should be 0 when you call
+ * this function, which means only `graph` owns the component, so it
+ * is safe to destroy.
+ */
+BT_HIDDEN
+int bt_graph_remove_unconnected_component(struct bt_graph *graph,
+ struct bt_component *component);
+
+BT_HIDDEN
+void bt_graph_add_message(struct bt_graph *graph,
+ struct bt_message *msg);
+
+static inline
+const char *bt_graph_status_string(enum bt_graph_status status)
+{
+ switch (status) {
+ case BT_GRAPH_STATUS_CANCELED:
+ return "BT_GRAPH_STATUS_CANCELED";
+ case BT_GRAPH_STATUS_AGAIN:
+ return "BT_GRAPH_STATUS_AGAIN";
+ case BT_GRAPH_STATUS_END:
+ return "BT_GRAPH_STATUS_END";
+ case BT_GRAPH_STATUS_OK:
+ return "BT_GRAPH_STATUS_OK";
+ case BT_GRAPH_STATUS_ERROR:
+ return "BT_GRAPH_STATUS_ERROR";
+ case BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION:
+ return "BT_GRAPH_STATUS_COMPONENT_REFUSES_PORT_CONNECTION";
+ case BT_GRAPH_STATUS_NOMEM:
+ return "BT_GRAPH_STATUS_NOMEM";
+ default:
+ return "(unknown)";
+ }
+}
+
+static inline
+const char *bt_graph_configuration_state_string(
+ enum bt_graph_configuration_state state)
+{
+ switch (state) {
+ case BT_GRAPH_CONFIGURATION_STATE_CONFIGURING:
+ return "BT_GRAPH_CONFIGURATION_STATE_CONFIGURING";
+ case BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED:
+ return "BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED";
+ case BT_GRAPH_CONFIGURATION_STATE_CONFIGURED:
+ return "BT_GRAPH_CONFIGURATION_STATE_CONFIGURED";
+ default:
+ return "(unknown)";
+ }
+}
+
+static inline
+enum bt_graph_status bt_graph_configure(struct bt_graph *graph)
+{
+ enum bt_graph_status status = BT_GRAPH_STATUS_OK;
+ uint64_t i;
+
+ BT_ASSERT(graph->config_state != BT_GRAPH_CONFIGURATION_STATE_FAULTY);
+
+ if (likely(graph->config_state ==
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURED)) {
+ goto end;
+ }
+
+#ifdef BT_ASSERT_PRE
+ BT_ASSERT_PRE(graph->has_sink, "Graph has no sink component: %!+g", graph);
+#endif
+
+ graph->config_state = BT_GRAPH_CONFIGURATION_STATE_PARTIALLY_CONFIGURED;
+
+ for (i = 0; i < graph->components->len; i++) {
+ struct bt_component *comp = graph->components->pdata[i];
+ struct bt_component_sink *comp_sink = (void *) comp;
+ struct bt_component_class_sink *comp_cls_sink =
+ (void *) comp->class;
+
+ if (comp->class->type != BT_COMPONENT_CLASS_TYPE_SINK) {
+ continue;
+ }
+
+ if (comp_sink->graph_is_configured_method_called) {
+ continue;
+ }
+
+ if (comp_cls_sink->methods.graph_is_configured) {
+ enum bt_self_component_status comp_status;
+
+#ifdef BT_LIB_LOGD
+ BT_LIB_LOGD("Calling user's \"graph is configured\" method: "
+ "%![graph-]+g, %![comp-]+c",
+ graph, comp);
+#endif
+
+ comp_status = comp_cls_sink->methods.graph_is_configured(
+ (void *) comp_sink);
+
+#ifdef BT_LIB_LOGD
+ BT_LIB_LOGD("User method returned: status=%s",
+ bt_self_component_status_string(comp_status));
+#endif
+
+#ifdef BT_ASSERT_PRE
+ BT_ASSERT_PRE(comp_status == BT_SELF_COMPONENT_STATUS_OK ||
+ comp_status == BT_SELF_COMPONENT_STATUS_ERROR ||
+ comp_status == BT_SELF_COMPONENT_STATUS_NOMEM,
+ "Unexpected returned status: status=%s",
+ bt_self_component_status_string(comp_status));
+#endif
+
+ if (comp_status != BT_SELF_COMPONENT_STATUS_OK) {
+ status = BT_GRAPH_STATUS_ERROR;
+#ifdef BT_LIB_LOGW
+ BT_LIB_LOGW("User's \"graph is configured\" method failed: "
+ "%![comp-]+c, status=%s",
+ comp,
+ bt_self_component_status_string(
+ comp_status));
+#endif
+
+ goto end;
+ }
+ }
+
+ comp_sink->graph_is_configured_method_called = true;
+ }
+
+ graph->config_state = BT_GRAPH_CONFIGURATION_STATE_CONFIGURED;
+
+end:
+ return status;
+}
+
+static inline
+void bt_graph_make_faulty(struct bt_graph *graph)
+{
+ graph->config_state = BT_GRAPH_CONFIGURATION_STATE_FAULTY;
+#ifdef BT_LIB_LOGD
+ BT_LIB_LOGD("Set graph's state to faulty: %![graph-]+g", graph);
+#endif
+}
+
+#endif /* BABELTRACE_GRAPH_GRAPH_INTERNAL_H */