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- Subject: Re: Pushing a UserData pointer?
- From: Chris Marrin <chris@...>
- Date: Mon, 16 May 2005 20:43:06 -0700
Rici Lake wrote:
If you don't want to go hacking the Lua core, I have another solution...
You say you're reffing the new userdata anyway; this is going to store a
reference in the registry. There's no magic to luaL_ref other than that.
So why not kill two birds with one stone?
Instead of using luaL_ref to store a reference in the registry, store
your own reference in the registry using a lightuserdata of the this
pointer as a key. Then you can push the lua object onto the stack using
the this pointer, without breaking the API and without incurring much
overhead (since the hash of a lud is essentially the address).
The problem with that is now I would always have a pointer to the
userdata and it would never GC, right? When I used my own table to store
the lightuserdata key/userdata value pair, I made the values in that
table weak so they would get collected properly.
Is there another way to avoid the GC problem?
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