lib: Add functions to borrow specialized component classes from specialized components

[babeltrace.git] / include / babeltrace / graph / port-output-const.h

diff --git a/include/babeltrace/graph/port-output-const.h b/include/babeltrace/graph/port-output-const.h
index d13c7395c777e81c0611c7b0e5fd77359cf87e0e..0afa640fe84db23c504951d92734cdcbcfdd6daf 100644 (file)
--- a/include/babeltrace/graph/port-output-const.h
+++ b/include/babeltrace/graph/port-output-const.h
@@ -24,25 +24,24 @@
  * SOFTWARE.
  */
 
+/* For bt_port, bt_port_output, __BT_UPCAST_CONST */
+#include <babeltrace/types.h>
+
 #include <stdint.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-struct bt_port;
-struct bt_port_output;
-
 static inline
-const struct bt_port *bt_port_output_as_port_const(
-               const struct bt_port_output *port_output)
+const bt_port *bt_port_output_as_port_const(const bt_port_output *port_output)
 {
-       return (const void *) port_output;
+       return __BT_UPCAST_CONST(bt_port, port_output);
 }
 
-extern void bt_port_output_get_ref(const struct bt_port_output *port_output);
+extern void bt_port_output_get_ref(const bt_port_output *port_output);
 
-extern void bt_port_output_put_ref(const struct bt_port_output *port_output);
+extern void bt_port_output_put_ref(const bt_port_output *port_output);
 
 #define BT_PORT_OUTPUT_PUT_REF_AND_RESET(_var)         \
        do {                                            \