motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-28 04:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

rust: qom: add possibility of overriding unparent

Browse source 
Add a blanket definition of ClassInitImpl<ObjectClass> that thunks
ObjectImpl::UNPARENT and overrides it in ObjectClass if it is not
None.

ClassInitImpl<DeviceClass> can now call its superclass's ClassInitImpl,
so that the C and Rust hierarchies match more closely.

This is mostly done as an example of implementing the metaclass
hierarchy under ClassInitImpl.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-10-29 15:00:26 +01:00
parent 6dd818fbbb
commit cb36da9bd8
2 changed files with 45 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

6
rust/qemu-api/src/device_class.rs
View file

@ -5,7 +5,7 @@
use std::ffi::CStr;
use crate::{
bindings::{self, DeviceClass, DeviceState, Error, Property, VMStateDescription},
bindings::{self, DeviceClass, DeviceState, Error, ObjectClass, Property, VMStateDescription},
definitions::ClassInitImpl,
prelude::*,
};
@ -68,7 +68,7 @@ unsafe extern "C" fn rust_reset_fn<T: DeviceImpl>(dev: *mut DeviceState) {
impl<T> ClassInitImpl<DeviceClass> for T
where
T: DeviceImpl,
T: ClassInitImpl<ObjectClass> + DeviceImpl,
{
fn class_init(dc: &mut DeviceClass) {
if <T as DeviceImpl>::REALIZE.is_some() {
@ -88,6 +88,8 @@ where
bindings::device_class_set_props_n(dc, prop.as_ptr(), prop.len());
}
}
<T as ClassInitImpl<ObjectClass>>::class_init(&mut dc.parent_class);
}
}