Re: Removing userdata variables!

[Dan Marks <dmarks@...>]

The way I've always handled this is to create a tag number just for
"dead" variables, and change the lua Object to the dead tag number
using lua_settag().  That way, you can know its not valid anymore
and not use it, even if it is still in scope under Lua.

Dan

Dan Marks
dmarks@uiuc.edu

On Thu, Aug 27, 1998 at 12:18:44PM -0300, Erik Hougaard wrote:
> Quick question:
> 
> I have a piece of code that receive a userdata with a C pointer in it!.
> My C function frees the pointer and I want to "delete" the variable that
> was passed to my function -  What to do?
> 
> Erik Hougaard
> 
> p.s.
> 
> Example:
> 
> s = createsession("modem") <- 's' now has a pointer to a allocated
> struct...
> ...
> ...
> killsession(s)             <- I'm freeing the memory - How do I get rid
> of s ?