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qdev: move bus removal to object_unparent

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Add an ObjectClass method that is done at object_unparent time.  It
should remove any backlinks to the object in the composition tree,
so that object_delete will be able to drop the last reference and
free the object.

Use it for qdev buses.

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2012-11-23 09:47:13 +01:00 • committed by Anthony Liguori
parent 764b63125a
commit 667d22d1ae
3 changed files with 27 additions and 3 deletions
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11
include/qemu/object.h
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@ -229,6 +229,15 @@ typedef struct ObjectProperty
QTAILQ_ENTRY(ObjectProperty) node;
} ObjectProperty;
/**
* ObjectUnparent:
* @obj: the object that is being removed from the composition tree
*
* Called when an object is being removed from the QOM composition tree.
* The function should remove any backlinks from children objects to @obj.
*/
typedef void (ObjectUnparent)(Object *obj);
/**
* ObjectClass:
*
@ -240,6 +249,8 @@ struct ObjectClass
/*< private >*/
Type type;
GSList *interfaces;
ObjectUnparent *unparent;
};
/**