[Development] Reducing number of allocations in metacall argument marshalling

[Thiago Macieira]

On quarta-feira, 15 de janeiro de 2014 13:42:01, Kuba Ober wrote:
> The metatype system stores the size of types known to it, so it’s a simple
> matter to know how big the all-in-one array needs to be, taking alignment
> into consideration, of course.
> 
> I don’t know yet if such a change would be binary compatible, that needs
> further checking of course. Initially it looks as if it would be
> compatible, since the QMetaCallEvent class is internal only, just as
> queued_activate is etc.
> 
> I would like to know if such a change would be considered useful. The
> potential for underlying allocator global lock contention is much smaller,
> besides not paying the uncontested lock allocation costs, and simply using
> a bit less memory for every metacall event.

It's probably binary compatible and would be welcome.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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