Re: [PATCH] qom/object: Comment to use g_slist_free on object_class_get_list result

["Marc-André Lureau" <marcandre.lureau@gmail.com>]

Hi

On Fri, Feb 28, 2020 at 11:09 AM Philippe Mathieu-Daudé
<philmd@redhat.com> wrote:
>
> On 2/28/20 11:06 AM, Marc-André Lureau wrote:
> > Hi
> >
> > On Fri, Feb 28, 2020 at 10:47 AM Daniel P. Berrangé <berrange@redhat.com> wrote:
> >>
> >> On Thu, Feb 27, 2020 at 08:09:42PM +0100, Philippe Mathieu-Daudé wrote:
> >>> Document the list returned by object_class_get_list() must be
> >>> released with g_slist_free() to avoid memory leaks.
> >>>
> >>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> >>> ---
> >>>   include/qom/object.h | 6 ++++++
> >>>   1 file changed, 6 insertions(+)
> >>>
> >>> diff --git a/include/qom/object.h b/include/qom/object.h
> >>> index 29546496c1..5517b56508 100644
> >>> --- a/include/qom/object.h
> >>> +++ b/include/qom/object.h
> >>> @@ -984,6 +984,9 @@ void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
> >>>    * @include_abstract: Whether to include abstract classes.
> >>>    *
> >>>    * Returns: A singly-linked list of the classes in reverse hashtable order.
> >>> + *
> >>> + * The returned list must be released with g_slist_free()
> >>> + * when no longer required.
> >>
> >> I'd suggest
> >>
> >>    "The returned list, but not its elements, must be released with
> >>     g_slist_free() or g_autoptr when no longer required"
> >
> > As gobject-introspection annotations: "Returns: (transfer container)
> > (element-type ObjectClass): A list of #ObjectClass"
>
> Are you suggesting to replace "Returns: A singly-linked list of the
> classes in reverse hashtable order." by the line you quoted?

No, just a remark. I doubt this is compatible with kernel-doc at this
point, and we are not using GI.

fwiw, I don't think "in reverse hashtable order" is really meaningful anyway.

>
> >
> >>
> >>>    */
> >>>   GSList *object_class_get_list(const char *implements_type,
> >>>                                 bool include_abstract);
> >>> @@ -995,6 +998,9 @@ GSList *object_class_get_list(const char *implements_type,
> >>>    *
> >>>    * Returns: A singly-linked list of the classes in alphabetical
> >>>    * case-insensitive order.
> >>> + *
> >>> + * The returned list must be released with g_slist_free()
> >>> + * when no longer required.
> >>>    */
> >>>   GSList *object_class_get_list_sorted(const char *implements_type,
> >>>                                 bool include_abstract);
> >>> --
> >>> 2.21.1
> >>>
> >>>
> >>
> >> Regards,
> >> Daniel
> >> --
> >> |: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
> >> |: https://libvirt.org         -o-            https://fstop138.berrange.com :|
> >> |: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|
> >>
> >>
> >
> >
>


-- 
Marc-André Lureau