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I'm not too sure how to use the index/newindex metamethods for what I'm
trying to do.  Are there examples of this somewhere?

-----Original Message-----
[] On Behalf Of Jerome Vuarand
Sent: Thursday, July 23, 2009 8:44 AM
To: Lua list
Subject: Re: Direct Memory Access to Lua variables?

2009/7/22 b's spam <>:
> I'm writing a C++ wrapper class that allows me to manipulate variables in
> loaded lua script. It works fine, but is very slow because I'm performing
> these operations many times (in real-time). Is there a way to write
> to the memory location without having to search and push the variable onto
> the stack by name?

If you're doing a lot more C access than Lua access, you can store the
variable data in a userdata, that will never be moved (just store its
address in your C code). Then you can use index/newindex metamethods
to read or write that data from Lua.
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