From 3b50e311b48795707fed6d4f474711db87e341b9 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 2 May 2012 13:30:55 +0200 Subject: [PATCH] qom: Add class_base_init MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Anthony Liguori Signed-off-by: Andreas Färber --- 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 ce9e51f..3c29c17 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 7a70d52..36379a1 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); -- 2.7.4