Re: how does GC work with complex expressions using metamethods?

["Michael Newberry" <mnewberry@...>]

No, I returned both lightuserdata and the metatable containing the GC 
method. I also tried returning the pointer to the userdata using 
lua_pushlightuserdata and that made no difference. Remember I am returning 
two values, and I am assigning the second value to a table element back in 
the lua code. The two return values are stored in a table which I has setup 
as a class.

Michael

----- Original Message ----- 
From: "Doug Currie" <doug.currie@gmail.com>
To: "Lua list" <lua@bazar2.conectiva.com.br>
Sent: Sunday, August 16, 2009 11:47 AM
Subject: Re: how does GC work with complex expressions using metamethods?


> On Aug 16, 2009, at 2:22 PM, Michael Newberry wrote:
>
> >  This is what I was talking about when I asked about the carbage 
> > collector "What defines being "used" by lua?"
>
> It is considered used if Lua can find it by following references (but  NOT 
> lightuserdata pointers) from global variables or the Lua stack.
>
> > For some reason, lua believes it is time for this userdata to be 
> > deleted. Why?
>
> Probably because you returned lightuserdata from CreadeData() instead  of 
> userdata?
>
> Where is the userdata being returned and/or stored?
>
> e