X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fgraph%2Fcomponent-internal.h;h=27b03b09595520b5e19598b0dffcec0473735b8c;hb=3230ee6b4f3a704958b761daecae835c56938bc9;hp=1e7b547aef911b56b6f5b9076e8c6bb750737522;hpb=43350437a513e8ed1a158ff3013eb5efefd3dc3b;p=babeltrace.git

diff --git a/include/babeltrace/graph/component-internal.h b/include/babeltrace/graph/component-internal.h
index 1e7b547a..27b03b09 100644
--- 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 */