Re: Specifying a different userdata size for gc purposes?

["Peter Cawley" <lua@...>]

Using something like: (the 2nd message in the above linked thread)
#include <new>
T* pClass = new ((T*)lua_newuserdata(L, sizeof(T))) T();

Probably won't help much when T is a class like:
class image_t {
  byte* data;
  int width, height, bpp;
  ...
};

The first method is probably more useful, provided that you keep the
GC's count up to date. The second method is useful in the general case
though.

2008/5/7 Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br>:
> >   What I'm wondering is if there's any way of telling the lua garbage
>  > collector that this userdata is actually occupying more than 4 bytes?
>
>  Currently, not. But see http://lua-users.org/lists/lua-l/2007-06/msg00088.html
>  and the next message in that thread for workarounds.
>