Commit 0f8198f1 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

object: qom module support 



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: default avatarGerd Hoffmann <kraxel@redhat.com>
Message-id: 20200624131045.14512-3-kraxel@redhat.com
parent 28457744

include/qom/object.h

+12 −0
Original line number Diff line number Diff line
@@ -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);

qom/object.c

+14 −0
Original line number Diff line number Diff line
@@ -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);