[PATCH v2 10/21] qom: Introduce type_is_registered()

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

In order to be able to check whether a QOM type has been
registered, introduce the type_is_registered() helper.

Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 include/qom/object.h | 8 ++++++++
 qom/object.c         | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/include/qom/object.h b/include/qom/object.h
index 9192265db76..5b5333017e0 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -898,6 +898,14 @@ Type type_register_static(const TypeInfo *info);
  */
 void type_register_static_array(const TypeInfo *infos, int nr_infos);
 
+/**
+ * type_is_registered:
+ * @typename: The @typename to check.
+ *
+ * Returns: %true if @typename has been registered, %false otherwise.
+ */
+bool type_is_registered(const char *typename);
+
 /**
  * DEFINE_TYPES:
  * @type_array: The array containing #TypeInfo structures to register
diff --git a/qom/object.c b/qom/object.c
index 01618d06bd8..be442980049 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -100,6 +100,11 @@ static TypeImpl *type_table_lookup(const char *name)
     return g_hash_table_lookup(type_table_get(), name);
 }
 
+bool type_is_registered(const char *typename)
+{
+    return !!type_table_lookup(typename);
+}
+
 static TypeImpl *type_new(const TypeInfo *info)
 {
     TypeImpl *ti = g_malloc0(sizeof(*ti));
-- 
2.47.1