Re: [Qemu-devel] [PATCH v2 12/29] Include hw/irq.h a lot less

[Markus Armbruster <armbru@redhat.com>]

Eric Blake <eblake@redhat.com> writes:

> On 8/7/19 8:04 AM, Philippe Mathieu-Daudé wrote:
>> On 8/6/19 5:14 PM, Markus Armbruster wrote:
>>> In my "build everything" tree, changing hw/irq.h triggers a recompile
>>> of some 5400 out of 6600 objects (not counting tests and objects that
>>> don't depend on qemu/osdep.h).
>>>
>>> hw/hw.h supposedly includes it for convenience.  Several other headers
>>> include it just to get qemu_irq and.or qemu_irq_handler.
>>>
>>> Move the qemu_irq and qemu_irq_handler typedefs from hw/irq.h to
>>> qemu/typedefs.h, and then include hw/irq.h only where it's still
>>> needed.  Touching it now recompiles only some 500 objects.
>>>
>
>>>  /*
>>>   * Function types
>>>   */
>>>  typedef void SaveStateHandler(QEMUFile *f, void *opaque);
>>>  typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
>>> +typedef void (*qemu_irq_handler)(void *opaque, int n, int level);
>
> Should we prefer a consistent form for function pointer typedefs?  Here,
> we've mixed 'rettype Name(params)' with 'rettype (*name)(params)'.

Which of the two difference I can see do you mean?

CamelCase vs. lower_case_with_underscore?

Parenthesis around the type name?  I wouldn't call that inconsistent, we
simply use parenthesis only when needed.