Paolo Bonzini <pbonz...@redhat.com> writes:
> Access everything from the class.
>
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
> qom/object.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/qom/object.c b/qom/object.c
> index f5f416b..f82f12c 100644
> --- a/qom/object.c
> +++ b/qom/object.c
> @@ -457,15 +457,13 @@ ObjectClass *object_class_dynamic_cast(ObjectClass
> *class,
> {
> ObjectClass *ret = NULL;
> TypeImpl *target_type;
> - TypeImpl *type;
>
> if (!class) {
> return NULL;
> }
>
> /* A simple fast path that can trigger a lot for leaf classes. */
> - type = class->type;
> - if (type->name == typename) {
> + if (class->type->name == typename) {
This won't trigger because we unconditionally strdup(). Can you add
this the bit from my patch that sets ->name appropriately?
Aurelien, can you try the resulting series with
--{enable,disable}-qom-casts? My suspicion is that this is the primary
source of speed up.
If you can make an image available too, I can try this myself.
Regards,
Anthony Liguori
> return class;
> }
>
> @@ -475,7 +473,7 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *class,
> return NULL;
> }
>
> - if (type->class->interfaces &&
> + if (class->interfaces &&
> type_is_ancestor(target_type, type_interface)) {
> int found = 0;
> GSList *i;
> @@ -493,7 +491,7 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *class,
> if (found > 1) {
> ret = NULL;
> }
> - } else if (type_is_ancestor(type, target_type)) {
> + } else if (type_is_ancestor(class->type, target_type)) {
> ret = class;
> }
>
> --
> 1.8.1.4
