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

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

diff --git a/lib/graph/component-source.c b/lib/graph/component-source.c
index 2d5039aa8d7323ef42138478d8b22622a6cc95b6..b638c33247b7c45c77cbc19f3e8811e6fc5ce307 100644 (file)
--- a/lib/graph/component-source.c
+++ b/lib/graph/component-source.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
@@ -25,18 +24,17 @@
 #define BT_LOG_TAG "COMP-SOURCE"
 #include <babeltrace/lib-logging-internal.h>
 
-#include <babeltrace/object.h>
+#include <babeltrace/assert-internal.h>
+#include <babeltrace/assert-pre-internal.h>
 #include <babeltrace/compiler-internal.h>
 #include <babeltrace/graph/self-component-source.h>
-#include <babeltrace/graph/component-source.h>
+#include <babeltrace/graph/component-source-const.h>
 #include <babeltrace/graph/component-source-internal.h>
 #include <babeltrace/graph/component-internal.h>
 #include <babeltrace/graph/port-internal.h>
-#include <babeltrace/graph/notification-iterator.h>
-#include <babeltrace/graph/notification-iterator-internal.h>
+#include <babeltrace/graph/message-iterator-const.h>
+#include <babeltrace/graph/message-iterator-internal.h>
 #include <babeltrace/graph/graph.h>
-#include <babeltrace/assert-internal.h>
-#include <babeltrace/assert-pre-internal.h>
 
 BT_HIDDEN
 void bt_component_source_destroy(struct bt_component *component)
@@ -45,7 +43,7 @@ void bt_component_source_destroy(struct bt_component *component)
 
 BT_HIDDEN
 struct bt_component *bt_component_source_create(
-               struct bt_component_class *class)
+               const struct bt_component_class *class)
 {
        struct bt_component_source *source = NULL;
 
@@ -59,14 +57,31 @@ end:
        return (void *) source;
 }
 
+const bt_component_class_source *
+bt_component_source_borrow_class_const(
+               const bt_component_source *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_SOURCE);
+
+       return (bt_component_class_source *) cls;
+}
+
 uint64_t bt_component_source_get_output_port_count(
-               struct bt_component_source *comp)
+               const struct bt_component_source *comp)
 {
        return bt_component_get_output_port_count((void *) comp);
 }
 
-struct bt_port_output *bt_component_source_borrow_output_port_by_name(
-               struct bt_component_source *comp, const char *name)
+const struct bt_port_output *
+bt_component_source_borrow_output_port_by_name_const(
+               const struct bt_component_source *comp, const char *name)
 {
        return bt_component_borrow_output_port_by_name((void *) comp, name);
 }
@@ -79,8 +94,9 @@ bt_self_component_source_borrow_output_port_by_name(
                (void *) comp, name);
 }
 
-struct bt_port_output *bt_component_source_borrow_output_port_by_index(
-               struct bt_component_source *comp, uint64_t index)
+const struct bt_port_output *
+bt_component_source_borrow_output_port_by_index_const(
+               const struct bt_component_source *comp, uint64_t index)
 {
        return bt_component_borrow_output_port_by_index((void *) comp, index);
 }
@@ -119,3 +135,15 @@ end:
        bt_object_put_ref(port);
        return status;
 }
+
+void bt_component_source_get_ref(
+               const struct bt_component_source *component_source)
+{
+       bt_object_get_ref(component_source);
+}
+
+void bt_component_source_put_ref(
+               const struct bt_component_source *component_source)
+{
+       bt_object_put_ref(component_source);
+}