Re: hook question

[roberto@... (Roberto Ierusalimschy)]

> >I do have one further question for Mike. What do you
> >think of the idea of a prototype for lua_sethook() that reads
> >like:
> >
> >typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar, void*  
> >userdata);
> 
> I don't know what Mike thinks, but I think it's a good idea.
> 
> When I'm creating interfaces in C I almost always regret creating an  
> interface where I pass a C function pointer but not an associated  
> void * data closure as well.

Please remember that hooks already have the whole Lua state as a
"closure". The point here is only performance.

Setting a hook already has a big impact on performance. Does it make a
significant difference an extra access to the registry inside the hook?

-- Roberto