lib: graph: disallow recursive consuming

[babeltrace.git] / include / babeltrace / graph / graph.h

diff --git a/include/babeltrace/graph/graph.h b/include/babeltrace/graph/graph.h
index a2dfbd8235f85e63d64e3a48fd6e2c6fd8fe7130..f85597845e718d871b30772a377b10fb565927aa 100644 (file)
--- a/include/babeltrace/graph/graph.h
+++ b/include/babeltrace/graph/graph.h
@@ -46,14 +46,13 @@ enum bt_graph_status {
        /** Downstream component does not support multiple inputs. */
        BT_GRAPH_STATUS_END = 1,
        BT_GRAPH_STATUS_OK = 0,
-       /** Component is already part of another graph. */
-       BT_GRAPH_STATUS_ALREADY_IN_A_GRAPH = -2,
        /** Invalid arguments. */
        BT_GRAPH_STATUS_INVALID = -22,
        /** No sink in graph. */
        BT_GRAPH_STATUS_NO_SINK = -6,
        /** General error. */
        BT_GRAPH_STATUS_ERROR = -1,
+       BT_GRAPH_STATUS_CANNOT_CONSUME = -2,
        BT_GRAPH_STATUS_NOMEM = -12,
 };
 
@@ -68,9 +67,23 @@ typedef void (*bt_graph_ports_disconnected_listener)(
                struct bt_component *downstream_component,
                struct bt_port *upstream_port, struct bt_port *downstream_port,
                void *data);
+typedef void (* bt_graph_listener_removed)(void *data);
 
 extern struct bt_graph *bt_graph_create(void);
 
+extern enum bt_graph_status bt_graph_add_component(
+               struct bt_graph *graph,
+               struct bt_component_class *component_class,
+               const char *name, struct bt_value *params,
+               struct bt_component **component);
+
+extern enum bt_graph_status bt_graph_add_component_with_init_method_data(
+               struct bt_graph *graph,
+               struct bt_component_class *component_class,
+               const char *name, struct bt_value *params,
+               void *init_method_data,
+               struct bt_component **component);
+
 /**
  * Creates a connection between two components using the two ports specified
  * and adds the connection and components (if not already added) to the graph.
@@ -95,16 +108,20 @@ extern enum bt_graph_status bt_graph_run(struct bt_graph *graph);
 extern enum bt_graph_status bt_graph_consume(struct bt_graph *graph);
 
 extern int bt_graph_add_port_added_listener(struct bt_graph *graph,
-               bt_graph_port_added_listener listener, void *data);
+               bt_graph_port_added_listener listener,
+               bt_graph_listener_removed listener_removed, void *data);
 
 extern int bt_graph_add_port_removed_listener(struct bt_graph *graph,
-               bt_graph_port_removed_listener listener, void *data);
+               bt_graph_port_removed_listener listener,
+               bt_graph_listener_removed listener_removed, void *data);
 
 extern int bt_graph_add_ports_connected_listener(struct bt_graph *graph,
-               bt_graph_ports_connected_listener listener, void *data);
+               bt_graph_ports_connected_listener listener,
+               bt_graph_listener_removed listener_removed, void *data);
 
 extern int bt_graph_add_ports_disconnected_listener(struct bt_graph *graph,
-               bt_graph_ports_disconnected_listener listener, void *data);
+               bt_graph_ports_disconnected_listener listener,
+               bt_graph_listener_removed listener_removed, void *data);
 
 extern enum bt_graph_status bt_graph_cancel(struct bt_graph *graph);
 extern bt_bool bt_graph_is_canceled(struct bt_graph *graph);