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qom: make object_ref/unref use a void * instead of Object *.

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The object_ref/unref methods are intended for use with any subclass of
the base Object. Using "Object *" in the signature is not adding any
meaningful level of type safety, since callers simply use "OBJECT(ptr)"
and this expands to an unchecked cast "(Object *)".

By using "void *" we enable the object_unref() method to be used to
provide support for g_autoptr() with any subclass.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200723181410.3145233-2-berrange@redhat.com>
Message-Id: <20200831210740.126168-2-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2020-08-31 17:07:23 -04:00 committed by Eduardo Habkost
parent acbef3cc0c
commit c5a61e5a3c
2 changed files with 6 additions and 4 deletions
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4
include/qom/object.h
View file

@ -1035,7 +1035,7 @@ GSList *object_class_get_list_sorted(const char *implements_type,
* as its reference count is greater than zero.
* Returns: @obj
*/
Object *object_ref(Object *obj);
Object *object_ref(void *obj);
/**
* object_unref:
@ -1044,7 +1044,7 @@ Object *object_ref(Object *obj);
* Decrease the reference count of a object. A object cannot be freed as long
* as its reference count is greater than zero.
*/
void object_unref(Object *obj);
void object_unref(void *obj);
/**
* object_property_try_add:

6
qom/object.c
View file

@ -1124,8 +1124,9 @@ GSList *object_class_get_list_sorted(const char *implements_type,
object_class_cmp);
}
Object *object_ref(Object *obj)
Object *object_ref(void *objptr)
{
Object *obj = OBJECT(objptr);
if (!obj) {
return NULL;
}
@ -1133,8 +1134,9 @@ Object *object_ref(Object *obj)
return obj;
}
void object_unref(Object *obj)
void object_unref(void *objptr)
{
Object *obj = OBJECT(objptr);
if (!obj) {
return;
}