yields and pcalls

[David Morris-Oliveros <david@...>]

All is awesome in lualand. I'm having more fun as the days go by (ok, so 
i'm a geek!).

I've got a model where i have lots of scripts running in "parallel" 
(using co-routines), manually scheduled by me, either using cooperative 
or preemptive "multitasking" (using hooks).

Now I want to add another level of complexity.

The main code that is run within these co-routines, is run using a call 
to lua_resume, and then when the script decides that it needs to wait 
(for some event or message) (cooperative), or the scheduler decides it's 
had enough CPU (preemptive), it comes out of the lua_resume with a 
lua_yield.

My question is, once it has been yielded, can I call something else in 
that co-routine? Specifically, can I then call (just an example):

int result = lua_resume( L, 0 );
if (result == LUA_YIELD) {
   getMethodWithinState( L, "processMessage" );
   lua_pcall( L, 0, 0, );
}

Can I do this, or do I have to wait for lua_resume() to come back with a 
return code of 0 in order to execute anything else in that co-routine?

Thanks heaps!

--
// David Morris-Oliveros
// Camera & Lua Coder
// Team Bondi


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