Re: Creating a default error handler for lua_pcall

[Lee Hickey <lahickey@...>]

Rici Lake wrote:
> Lee Hickey wrote:
> > Thanks. What I forgot to mention is that I want to remove the 
> > overhead of having to insert this extra parameter for every pcall. My 
> > game engine makes many pcalls and I would rather have each of these 
> > calls be as cheap as possible. This need isn't based on any kind of 
> > profiling, so I am guilty of a little blind optimising, but many 
> > unnecessary lua_inserts per frame seems like a sensible thing to 
> > avoid if at all possible.
> >
> > Regards,
> > Lee.
>
> It's probably not that expensive. But you might want to try to cut 
> down on the number of pcalls, for example by using an "outer pcall" 
> which calls function which performs a sequence of lua functions. (Of 
> course, you could also seek & destroy C functions which don't conform 
> to your stack guidelines.)
Thanks for the suggestions. Both of those things will work of course, 
and I'll do both, however, I can't help feeling there should be a way to 
set up a default error handler. A pseudo-index type approach seems like 
a sensible way, so I think I'll have a play at adding that in. Has there 
been any work done on customisable pseudo-indices?

Regards,
Lee