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qom: Add object_class_get_parent()

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This simple bit of functionality was missing and we'll need it soon,
so add it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[AF: Document possible NULL return value]
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Paolo Bonzini 2012-05-02 13:30:54 +02:00 • committed by Andreas Färber
parent eb2aeacf98
commit e7cce67f27
2 changed files with 21 additions and 0 deletions
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8
include/qemu/object.h
View file

@ -547,6 +547,14 @@ ObjectClass *object_class_dynamic_cast_assert(ObjectClass *klass,
ObjectClass *object_class_dynamic_cast(ObjectClass *klass, ObjectClass *object_class_dynamic_cast(ObjectClass *klass,
const char *typename); const char *typename);
/**
* object_class_get_parent:
* @klass: The class to obtain the parent for.
*
* Returns: The parent for @klass or %NULL if none.
*/
ObjectClass *object_class_get_parent(ObjectClass *klass);
/** /**
* object_class_get_name: * object_class_get_name:
* @klass: The class to obtain the QOM typename for. * @klass: The class to obtain the QOM typename for.

13
qom/object.c
View file

@ -545,6 +545,19 @@ ObjectClass *object_class_by_name(const char *typename)
return type->class; return type->class;
} }
ObjectClass *object_class_get_parent(ObjectClass *class)
{
TypeImpl *type = type_get_parent(class->type);
if (!type) {
return NULL;
}
type_initialize(type);
return type->class;
}
typedef struct OCFData typedef struct OCFData
{ {
void (*fn)(ObjectClass *klass, void *opaque); void (*fn)(ObjectClass *klass, void *opaque);