Add graph event listeners

[babeltrace.git] / include / babeltrace / component / graph-internal.h

diff --git a/include/babeltrace/component/graph-internal.h b/include/babeltrace/component/graph-internal.h
index 7da6255fa92fdda33efe1534ea01b8f2e63f7d62..0084628af5bd987e5ebafd571f0cc28c35d90056 100644 (file)
--- a/include/babeltrace/component/graph-internal.h
+++ b/include/babeltrace/component/graph-internal.h
@@ -32,6 +32,9 @@
 #include <babeltrace/object-internal.h>
 #include <glib.h>
 
+struct bt_component;
+struct bt_port;
+
 struct bt_graph {
        /**
         * A component graph contains components and point-to-point connection
@@ -51,6 +54,28 @@ struct bt_graph {
        GPtrArray *components;
        /* Queue of pointers (weak references) to sink bt_components. */
        GQueue *sinks_to_consume;
+
+       struct {
+               GArray *port_added;
+               GArray *port_removed;
+               GArray *port_connected;
+               GArray *port_disconnected;
+       } listeners;
 };
 
+BT_HIDDEN
+void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port);
+
+BT_HIDDEN
+void bt_graph_notify_port_removed(struct bt_graph *graph,
+               struct bt_component *comp, struct bt_port *port);
+
+BT_HIDDEN
+void bt_graph_notify_port_connected(struct bt_graph *graph,
+               struct bt_port *port);
+
+BT_HIDDEN
+void bt_graph_notify_port_disconnected(struct bt_graph *graph,
+               struct bt_component *comp, struct bt_port *port);
+
 #endif /* BABELTRACE_COMPONENT_COMPONENT_GRAPH_INTERNAL_H */