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Re: [Qemu-devel] [PATCH 5/9] qapi_sized_buffer


From: mdroth
Subject: Re: [Qemu-devel] [PATCH 5/9] qapi_sized_buffer
Date: Wed, 13 Mar 2013 15:52:00 -0500
User-agent: Mutt/1.5.21 (2010-09-15)

On Wed, Mar 13, 2013 at 01:56:24PM -0500, Joel Schopp wrote:
> Add a sized buffer interface to qapi.

Isn't this just a special case of the visit_*_carray() interfaces? We
should avoid new interfaces if possible, since it adds to feature
disparities between visitor implementations.

> 
> Cc: Michael Tsirkin <address@hidden>
> Signed-off-by: Stefan Berger <address@hidden>
> Signed-off-by: Joel Schopp <address@hidden>
> ---
>  include/qapi/visitor-impl.h |    2 ++
>  include/qapi/visitor.h      |    2 ++
>  qapi/qapi-visit-core.c      |    8 ++++++++
>  3 files changed, 12 insertions(+)
> 
> diff --git a/include/qapi/visitor-impl.h b/include/qapi/visitor-impl.h
> index 9d87f2d..dc0e25c 100644
> --- a/include/qapi/visitor-impl.h
> +++ b/include/qapi/visitor-impl.h
> @@ -38,6 +38,8 @@ struct Visitor
>                           size_t elem_count, size_t elem_size, Error **errp);
>      void (*next_carray)(Visitor *v, Error **errp);
>      void (*end_carray)(Visitor *v, Error **errp);
> +    void (*type_sized_buffer)(Visitor *v, uint8_t **obj, size_t size,
> +                              const char *name, Error **errp);
> 
>      /* May be NULL */
>      void (*start_optional)(Visitor *v, bool *present, const char *name,
> diff --git a/include/qapi/visitor.h b/include/qapi/visitor.h
> index 74bddef..7c7bb98 100644
> --- a/include/qapi/visitor.h
> +++ b/include/qapi/visitor.h
> @@ -55,5 +55,7 @@ void visit_start_carray(Visitor *v, void **obj, const char 
> *name,
>                          size_t elem_count, size_t elem_size, Error **errp);
>  void visit_next_carray(Visitor *v, Error **errp);
>  void visit_end_carray(Visitor *v, Error **errp);
> +void visit_type_sized_buffer(Visitor *v, uint8_t **obj, size_t len,
> +                             const char *name, Error **errp);
> 
>  #endif
> diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
> index d9982f8..4b36a54 100644
> --- a/qapi/qapi-visit-core.c
> +++ b/qapi/qapi-visit-core.c
> @@ -338,3 +338,11 @@ void visit_end_carray(Visitor *v, Error **errp)
>          v->end_carray(v, errp);
>      }
>  }
> +
> +void visit_type_sized_buffer(Visitor *v, uint8_t **obj, size_t len,
> +                             const char *name, Error **errp)
> +{
> +    if (!error_is_set(errp)) {
> +        v->type_sized_buffer(v, obj, len, name, errp);
> +    }
> +}
> -- 
> 1.7.10.4
> 
> 



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