Re: [PATCH 04/10] include/qom/object.h: New OBJECT_DEFINE_SIMPLE_TYPE{, _WITH_INTERFACES} macros

[Zhao Liu]

On Tue, Feb 20, 2024 at 04:06:16PM +0000, Peter Maydell wrote:
> Date: Tue, 20 Feb 2024 16:06:16 +0000
> From: Peter Maydell <peter.maydell@linaro.org>
> Subject: [PATCH 04/10] include/qom/object.h: New
>  OBJECT_DEFINE_SIMPLE_TYPE{, _WITH_INTERFACES} macros
> X-Mailer: git-send-email 2.34.1
> 
> We have an OBJECT_DEFINE_TYPE_EXTENDED macro, plus several variations
> on it, which emits the boilerplate for the TypeInfo and ensures it is
> registered with the type system.  However, all the existing macros
> insist that the type being defined has its own FooClass struct, so
> they aren't useful for the common case of a simple leaf class which
> doesn't have any new methods or any other need for its own class
> struct (that is, for the kind of type that OBJECT_DECLARE_SIMPLE_TYPE
> declares).
> 
> Pull the actual implementation of OBJECT_DEFINE_TYPE_EXTENDED out
> into a new DO_OBJECT_DEFINE_TYPE_EXTENDED which parameterizes the
> value we use for the class_size field.  This lets us add a new
> OBJECT_DEFINE_SIMPLE_TYPE which does the same job as the various
> existing OBJECT_DEFINE_*_TYPE_* family macros for this kind of simple
> type, and the variant OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES for
> when the type will implement some interfaces.
> 
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  docs/devel/qom.rst   |  34 +++++++++++--
>  include/qom/object.h | 114 +++++++++++++++++++++++++++++++++----------
>  2 files changed, 117 insertions(+), 31 deletions(-)
>

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>