Re: Returns lua_newuserdata a constant address?
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- Subject: Re: Returns lua_newuserdata a constant address?
- From: Rici Lake <lua@...>
- Date: Mon, 2 Aug 2004 07:18:57 -0500
The current garbage collector is non-moving, and it is hard to imagine
this changing. Garbage collection might happen at virtually any moment;
if strings and userdata could move around unexpectedly, it would
severely complicate the C interface.
On 2-Aug-04, at 4:10 AM, Michael Roth wrote:
Is the pointer returned by lua_newuserdata() a constant one or exists a
possibility that the memory block will be moved by lua and the address
of the returned memory block change during garbage collection?
I plan to use a C-pointer stored outside the lua context pointing to a
memory block returned by lua_newuserdata().
I know already, if there aren't any references from lua to the userdata
object the memory block will be collected and my pointer become
invalid.