[Libvir] Proposal: Block device and network stats

[Daniel P. Berrange]

On Fri, Aug 10, 2007 at 03:41:54PM +0100, Richard W.M. Jones wrote:
> Daniel P. Berrange wrote:
> >It is probably worthwhile though to
> >ensure that we design the APIs so that the structs are always allocated by
> >the internal driver and not the caller. This allows us to add more fields
> >at a later date if needed.
> 
> Instead of the above, the caller has to pass in the size of the struct.
> 
> Pros to passing in the struct & size:
> 
> * New caller / old libvirt can be detected, rather than causing a segfault.
> * Caller is less likely to forget to free the struct (because it is 
> mostly likely on their stack, or they explicitly malloc'd it).

Yep, that works for me.  

Dan.
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