Re: Lua 5.0 to 5.1 performance regression?

[Rici Lake <lua@...>]

On 24-Sep-06, at 7:33 PM, Glenn Maynard wrote:
>     iFreeListRef = ref;
>     if(ref == iMaxReference)
>         --iMaxReference;

I think that should be:

    if (ref == iMaxReference)
        --iMaxReference;
    else
        iFreeListRef = ref;

Otherwise, you'll give out the same references twice.

You may find it faster to nil out the reference table entry, and keep 
the free list in your own private datastructure; it's possible that 
your compiler is not generating good code for converting between 
integer and floating point. (In general, you should use lua_pushinteger 
with lua 5.1, I think.) You could also try storing the freelist indices 
coerced to (void *) and wrapped as lightuserdata.