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

[babeltrace.git] / lib / graph / component-sink.c

diff --git a/lib/graph/component-sink.c b/lib/graph/component-sink.c
index 033c8e6ebbf7545c342191ff9f9ebdce05ce9b46..30c15609723adfa14ca096867fedc4e8443830db 100644 (file)
--- a/lib/graph/component-sink.c
+++ b/lib/graph/component-sink.c
@@ -1,8 +1,7 @@
 /*
+ * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
  * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
@@ -25,16 +24,15 @@
 #define BT_LOG_TAG "COMP-SINK"
 #include <babeltrace/lib-logging-internal.h>
 
+#include <babeltrace/assert-internal.h>
+#include <babeltrace/assert-pre-internal.h>
 #include <babeltrace/compiler-internal.h>
-#include <babeltrace/values.h>
+#include <babeltrace/value.h>
 #include <babeltrace/graph/self-component-sink.h>
 #include <babeltrace/graph/component-sink-const.h>
 #include <babeltrace/graph/component-sink-internal.h>
 #include <babeltrace/graph/component-internal.h>
 #include <babeltrace/graph/graph.h>
-#include <babeltrace/object.h>
-#include <babeltrace/assert-internal.h>
-#include <babeltrace/assert-pre-internal.h>
 
 BT_HIDDEN
 void bt_component_sink_destroy(struct bt_component *component)
@@ -57,6 +55,22 @@ end:
        return (void *) sink;
 }
 
+const bt_component_class_sink *
+bt_component_sink_borrow_class_const(
+               const bt_component_sink *component)
+{
+       struct bt_component_class *cls;
+
+       BT_ASSERT_PRE_NON_NULL(component, "Component");
+
+       cls = component->parent.class;
+
+       BT_ASSERT(cls);
+       BT_ASSERT(cls->type == BT_COMPONENT_CLASS_TYPE_SINK);
+
+       return (bt_component_class_sink *) cls;
+}
+
 uint64_t bt_component_sink_get_input_port_count(
                const struct bt_component_sink *component)
 {
@@ -124,3 +138,15 @@ end:
        bt_object_put_ref(port);
        return status;
 }
+
+void bt_component_sink_get_ref(
+               const struct bt_component_sink *component_sink)
+{
+       bt_object_get_ref(component_sink);
+}
+
+void bt_component_sink_put_ref(
+               const struct bt_component_sink *component_sink)
+{
+       bt_object_put_ref(component_sink);
+}