Re: [Qemu-devel] [PATCH v2 11/23] qom: add object_property_add_const_link

[Peter Crosthwaite]

On Wed, Jun 3, 2015 at 10:08 AM, Paolo Bonzini <address@hidden> wrote:
> Suggested-by: Eduardo Habkost <address@hidden>
> Acked-by: Andreas Faerber <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>

Reviewed-by: Peter Crosthwaite <address@hidden>

> ---
>  include/qom/object.h | 18 ++++++++++++++++++
>  qom/object.c         | 16 ++++++++++++++++
>  2 files changed, 34 insertions(+)
>
> diff --git a/include/qom/object.h b/include/qom/object.h
> index d2d7748..0505f20 100644
> --- a/include/qom/object.h
> +++ b/include/qom/object.h
> @@ -1290,6 +1290,24 @@ void object_property_add_alias(Object *obj, const char 
> *name,
>                                 Error **errp);
>
>  /**
> + * object_property_add_const_link:
> + * @obj: the object to add a property to
> + * @name: the name of the property
> + * @target: the object to be referred by the link
> + * @errp: if an error occurs, a pointer to an area to store the error
> + *
> + * Add an unmodifiable link for a property on an object.  This function will
> + * add a property of type link<TYPE> where TYPE is the type of @target.
> + *
> + * The caller must ensure that @target stays alive as long as
> + * this property exists.  In the case @target is a child of @obj,
> + * this will be the case.  Otherwise, the caller is responsible for
> + * taking a reference.
> + */
> +void object_property_add_const_link(Object *obj, const char *name,
> +                                    Object *target, Error **errp);
> +
> +/**
>   * object_property_set_description:
>   * @obj: the object owning the property
>   * @name: the name of the property
> diff --git a/qom/object.c b/qom/object.c
> index b8dff43..96abd34 100644
> --- a/qom/object.c
> +++ b/qom/object.c
> @@ -1266,6 +1266,22 @@ out:
>      g_free(full_type);
>  }
>
> +void object_property_add_const_link(Object *obj, const char *name,
> +                                    Object *target, Error **errp)
> +{
> +    char *link_type;
> +    ObjectProperty *op;
> +
> +    link_type = g_strdup_printf("link<%s>", object_get_typename(target));
> +    op = object_property_add(obj, name, link_type,
> +                             object_get_child_property, NULL,
> +                             NULL, target, errp);
> +    if (op != NULL) {
> +        op->resolve = object_resolve_child_property;
> +    }
> +    g_free(link_type);
> +}
> +
>  gchar *object_get_canonical_path_component(Object *obj)
>  {
>      ObjectProperty *prop = NULL;
> --
> 2.4.1
>
>
>