From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:48757) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SF1iw-0008Gk-Em for qemu-devel@nongnu.org; Tue, 03 Apr 2012 07:16:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SF1im-00039g-LS for qemu-devel@nongnu.org; Tue, 03 Apr 2012 07:16:29 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:61671) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SF1im-000393-Cd for qemu-devel@nongnu.org; Tue, 03 Apr 2012 07:16:20 -0400 Received: by mail-pb0-f45.google.com with SMTP id uo5so6178795pbc.4 for ; Tue, 03 Apr 2012 04:16:19 -0700 (PDT) Sender: Paolo Bonzini From: Paolo Bonzini Date: Tue, 3 Apr 2012 13:15:31 +0200 Message-Id: <1333451753-3550-4-git-send-email-pbonzini@redhat.com> In-Reply-To: <1333451753-3550-1-git-send-email-pbonzini@redhat.com> References: <1333451753-3550-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 03/25] qom: add class_base_init List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aliguori@us.ibm.com, afaerber@suse.de The class_base_init TypeInfo callback was present in one of the early QOM versions but removed (on my request...) before committing. We will need it soon, add it. Signed-off-by: Paolo Bonzini --- include/qemu/object.h | 10 ++++++++-- qom/object.c | 9 +++++++++ 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/include/qemu/object.h b/include/qemu/object.h index 470efe3..ccaea7d 100644 --- a/include/qemu/object.h +++ b/include/qemu/object.h @@ -291,10 +291,15 @@ struct Object * has occurred to allow a class to set its default virtual method pointers. * This is also the function to use to override virtual methods from a parent * class. + * @class_base_init: This function is called for all base classes after all + * parent class initialization has occurred, but before the class itself + * is initialized. This is the function to use to undo the effects of + * memcpy from the parent class to the descendents. * @class_finalize: This function is called during class destruction and is * meant to release and dynamic parameters allocated by @class_init. - * @class_data: Data to pass to the @class_init and @class_finalize functions. - * This can be useful when building dynamic classes. + * @class_data: Data to pass to the @class_init, @class_base_init and + * @class_finalize functions. This can be useful when building dynamic + * classes. * @interfaces: The list of interfaces associated with this type. This * should point to a static array that's terminated with a zero filled * element. @@ -312,6 +317,7 @@ struct TypeInfo size_t class_size; void (*class_init)(ObjectClass *klass, void *data); + void (*class_base_init)(ObjectClass *klass, void *data); void (*class_finalize)(ObjectClass *klass, void *data); void *class_data; diff --git a/qom/object.c b/qom/object.c index 4975d93..6ff1c19 100644 --- a/qom/object.c +++ b/qom/object.c @@ -45,6 +45,7 @@ struct TypeImpl size_t instance_size; void (*class_init)(ObjectClass *klass, void *data); + void (*class_base_init)(ObjectClass *klass, void *data); void (*class_finalize)(ObjectClass *klass, void *data); void *class_data; @@ -112,6 +113,7 @@ TypeImpl *type_register(const TypeInfo *info) ti->instance_size = info->instance_size; ti->class_init = info->class_init; + ti->class_base_init = info->class_base_init; ti->class_finalize = info->class_finalize; ti->class_data = info->class_data; @@ -232,6 +234,13 @@ static void type_initialize(TypeImpl *ti) memcpy((void *)ti->class + sizeof(ObjectClass), (void *)parent->class + sizeof(ObjectClass), parent->class_size - sizeof(ObjectClass)); + + while (parent) { + if (parent->class_base_init) { + parent->class_base_init(ti->class, ti->class_data); + } + parent = type_get_parent(parent); + } } memset((void *)ti->class + class_size, 0, ti->class_size - class_size); -- 1.7.9.3