Notification iterator: generate automatic notifications when missing

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

diff --git a/include/babeltrace/graph/component-internal.h b/include/babeltrace/graph/component-internal.h
index 1e7b547aef911b56b6f5b9076e8c6bb750737522..27b03b09595520b5e19598b0dffcec0473735b8c 100644 (file)
--- a/include/babeltrace/graph/component-internal.h
+++ b/include/babeltrace/graph/component-internal.h
@@ -38,6 +38,14 @@
 #define DEFAULT_INPUT_PORT_NAME                "default"
 #define DEFAULT_OUTPUT_PORT_NAME       "default"
 
+typedef void (*bt_component_destroy_listener_func)(
+               struct bt_component *class, void *data);
+
+struct bt_component_destroy_listener {
+       bt_component_destroy_listener_func func;
+       void *data;
+};
+
 struct bt_component {
        struct bt_object base;
        struct bt_component_class *class;
@@ -61,6 +69,9 @@ struct bt_component {
        /* Input and output ports (weak references) */
        GPtrArray *input_ports;
        GPtrArray *output_ports;
+
+       /* Array of struct bt_component_destroy_listener */
+       GArray *destroy_listeners;
 };
 
 static inline
@@ -128,4 +139,12 @@ BT_HIDDEN
 enum bt_component_status bt_component_remove_port(
                struct bt_component *component, struct bt_port *port);
 
+BT_HIDDEN
+void bt_component_add_destroy_listener(struct bt_component *component,
+               bt_component_destroy_listener_func func, void *data);
+
+BT_HIDDEN
+void bt_component_remove_destroy_listener(struct bt_component *component,
+               bt_component_destroy_listener_func func, void *data);
+
 #endif /* BABELTRACE_COMPONENT_COMPONENT_INTERNAL_H */