Re: [Qemu-devel] [PATCH 02/25] qom: add object_child_foreach

[Anthony Liguori <anthony@codemonkey.ws>]

On 04/03/2012 06:15 AM, Paolo Bonzini wrote:
> A utility function that will be used to implement hierarchical realization.
>
> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

Regards,

Anthony Liguori

> ---
>   include/qemu/object.h |   14 +++++++++++++-
>   qom/object.c          |   17 +++++++++++++++++
>   2 files changed, 30 insertions(+), 1 deletion(-)
>
> diff --git a/include/qemu/object.h b/include/qemu/object.h
> index f814521..470efe3 100644
> --- a/include/qemu/object.h
> +++ b/include/qemu/object.h
> @@ -918,6 +918,19 @@ void object_property_add_str(Object *obj, const char *name,
>                                struct Error **errp);
>
>   /**
> + * object_child_foreach:
> + * @obj: the object whose children will be navigated
> + * @fn: the iterator function to be called
> + * @opaque: an opaque value that will be passed to the iterator
> + *
> + * Call @fn passing each child of @obj and @opaque to it, until @fn returns
> + * non-zero.  Return the last value returned by @fn, or 0 if there is no
> + * child.
> + */
> +int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
> +                         void *opaque);
> +
> +/**
>    * container_get:
>    * @path: path to the container
>    *
> @@ -928,5 +941,4 @@ void object_property_add_str(Object *obj, const char *name,
>    */
>   Object *container_get(const char *path);
>
> -
>   #endif
> diff --git a/qom/object.c b/qom/object.c
> index 3e9fed7..4975d93 100644
> --- a/qom/object.c
> +++ b/qom/object.c
> @@ -597,6 +597,23 @@ void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
>       g_hash_table_foreach(type_table_get(), object_class_foreach_tramp,&data);
>   }
>
> +int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),
> +                         void *opaque)
> +{
> +    ObjectProperty *prop;
> +    int ret = 0;
> +
> +    QTAILQ_FOREACH(prop,&obj->properties, node) {
> +        if (strstart(prop->type, "child<", NULL)) {
> +            ret = fn(prop->opaque, opaque);
> +            if (ret != 0) {
> +                break;
> +            }
> +        }
> +    }
> +    return ret;
> +}
> +
>   static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
>   {
>       GSList **list = opaque;