Interrupt VM and continue at any time, easy to realise?

["Andreas Lobinger, Dipl.-Ing." <al@...>]

Dear Mr. Roberto Ierusalimschy

I've attracted by your script interpreter because of the LTN002 
about the footprint and its easy extensibility.

We want to use a script interpreter for a small embedded webserver
to add CGI functionality. 

The big crux of the matter is that we have a system splitt up in 
modules. Each module may not exceed its execution time.

So we need now the Lua VM (4.0.1) interruptible.

This means to interrupt the execution of the byte code at any moment
and to continue the execution when it is apropriate.

As far as I understood (but I am a novice regarding to scripting 
engine architecture) it is very complex to make the VM interruptable

Does any cooking recipe exist which gives one a handrail to modify 
the VM in the above manner ? 

regards Andreas John