Re: [PATCH 00/17] conf/qemu/etc: change several functions to return void instead of 0/-1

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On Wed, Feb 26, 2025 at 11:04:23AM +0100, Martin Kletzander wrote:
The classic Hal fixing a lightbulb moment ;)

At least more productive than spending an hour performing the "Hal looking for his glasses" routine (my variation usually concerns my phone, which is invariably in one of my pockets the entire time).

>[...]

On 2/26/25 10:53 AM, Daniel P. Berrangé wrote:

An alternative option is to port everything that uses virObject over
to use GObject, since virObject is just a thin back-compat shim.

I didn't pay attention at the time (or since) - is there 0 extra functionality in virObject that isn't in GObject (aside from the object size limitation you mention below)?

With GObject there is no need to manually call functions to create
classes. There's just a static struct declared which triggers
creation of classes on first use. virIdentity is an example of an
object doing that.

Many are easy to change, but some of the larger objects will have
trouble as GObject artificially limits (public) struct size to 64k
IIRC, expecting you to have the split public/private struct design
where the private struct can be arbitrarily huge

Why didn't they just make the maximum struct size 640k? Bill's Law says that should be big enough for possible object.




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