lib: Add functions to borrow specialized component classes from specialized components
[babeltrace.git] / include / babeltrace / graph / self-component-class-sink.h
index d3ab837792b8115bfd8931edecfda64bb01e1f98..2661e83026f1a77666154a0d34b382110f06a35e 100644 (file)
@@ -2,6 +2,7 @@
 #define BABELTRACE_GRAPH_SELF_COMPONENT_CLASS_SINK_H
 
 /*
+ * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * SOFTWARE.
  */
 
+/*
+ * For bt_component_class_sink, bt_self_component_class_sink,
+ * __BT_UPCAST_CONST
+ */
+#include <babeltrace/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-struct bt_component_class_sink;
-struct bt_self_component_class_sink;
-
 static inline
-struct bt_component_class_sink *
-bt_self_component_class_sink_borrow_component_class_sink(
-               struct bt_self_component_class_sink *self_comp_cls_sink)
+const bt_component_class_sink *
+bt_self_component_class_sink_as_component_class_sink(
+               bt_self_component_class_sink *self_comp_cls_sink)
 {
-       return (void *) self_comp_cls_sink;
+       return __BT_UPCAST_CONST(bt_component_class_sink, self_comp_cls_sink);
 }
 
 #ifdef __cplusplus
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