closure vars typeinfo

[Timon Gehr]

On 06/12/2013 02:08 AM, Adam D. Ruppe wrote:
> I'm catching up on the dconf videos tonight and just watched the precise
> garbage collector one, where he said there's no info for closures. Would
> it work if the closure's void* went to something along these lines?
>
> struct Closure {
>      // magic a magic number to help identify this block
>
>      size_t number_of_variables_captured;
>      TypeInfo[number_of_vars_captured] capturedVarTypes;
>
>      // whatever else is needed
>
>      ubyte[xx] capturedVars;
> }
>
> The gc could read this and it might be useful for debugging too.
>
> But I'm mostly just wondering if you guys thought any more about how to
> (or if you want to) tackle this at the conference.

The info shouldn't be stored inline, since it is shared by all closures 
created at the same site.