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- Subject: Re: Userdata pointers
- From: Ben Sunshine-Hill <sneftel@...>
- Date: Wed, 16 Mar 2005 11:09:40 -0800
Currently the address will not change, since the GC is non-compacting.
I'm not sure whether the authors plan to maintain this as an
On Wed, 16 Mar 2005 18:02:01 +0000, Warren Merrifield
> I think I already know the answer to this, but I'm not sure, so i
> thought I would check:
> I create some full userdata, using the C API, and get a pointer to a
> block of memory back. I create a reference to this userdata so that it
> won't get garbage collected until I want it to. Will the address of my
> memory remain constant throughout the lifetime of the userdata (i.e.
> outside the scope of the function which created it)
> I want to be able to do something like
> d0 = AddDisplayObject(def)
> d1 = AddDisplayObject(def)
> in Lua, and then get the addresses for the userdata display objects
> every frame in C without having to call back into Lua every time.
> Thanks for any help,