On Wed, 2013-01-30 at 17:54 +0100, Andreas Färber wrote: > > That would require polymorphism since we already need to derive from > PCIDevice or ISADevice respectively for interfacing with the bus... > Modern object-oriented languages have tried to avoid multi-inheritence > due to arising complications, I thought. Wouldn't object if someone > wanted to do the dirty implementation work though. ;) > > Another such example is EHCI, with PCIDevice and SysBusDevice > frontends, > sharing an EHCIState struct and having helper functions operating on > that core state only. Quite a few device share such a pattern today > actually (serial, m48t59, ...).
This is a design bug of your model :-) You shouldn't derive from your bus interface IMHO but from your functional interface, and have an ownership relation to the PCIDevice (a bit like IOKit does if my memory serves me well). Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
