@@ -994,6 +994,18 @@ bool object_class_is_abstract(ObjectClass *klass);
*/
ObjectClass *object_class_by_name(const char *typename);
+/**
+ * module_object_class_by_name:
+ * @typename: The QOM typename to obtain the class for.
+ *
+ * For objects which might be provided by a module. Behaves like
+ * object_class_by_name, but additionally tries to load the module
+ * needed in case the class is not available.
+ *
+ * Returns: The class for @typename or %NULL if not found.
+ */
+ObjectClass *module_object_class_by_name(const char *typename);
+
void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
const char *implements_type, bool include_abstract,
void *opaque);
@@ -985,6 +985,20 @@ ObjectClass *object_class_by_name(const char *typename)
return type->class;
}
+ObjectClass *module_object_class_by_name(const char *typename)
+{
+ ObjectClass *oc;
+
+ oc = object_class_by_name(typename);
+#ifdef CONFIG_MODULES
+ if (!oc) {
+ module_load_qom_one(typename);
+ oc = object_class_by_name(typename);
+ }
+#endif
+ return oc;
+}
+
ObjectClass *object_class_get_parent(ObjectClass *class)
{
TypeImpl *type = type_get_parent(class->type);
Little helper function to load modules on demand. In most cases adding module loading support for devices and other objects is just s/object_class_by_name/module_object_class_by_name/ in the right spot. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20200624131045.14512-3-kraxel@redhat.com --- include/qom/object.h | 12 ++++++++++++ qom/object.c | 14 ++++++++++++++ 2 files changed, 26 insertions(+)