hehe..
it looks like we can do it:

�- when memory hits the waterline mark, VM should do the following:
� �- for every currently scheduled process , push an artificial stack
frame on top , which is
StackOverflow signal.

Then the first thing what this guy should do, when he will get
control, is to analyze
how deep is the stack of given process and if it surpassed the allowed
threshold,
and if there's no handler, then decide whether to kill the process or not.

Also, since it is exception, a user code can intercept this exception and
either ignore it (effectively forcing system to keep running), or otherwise
terminate process, but in an educated manner, since he might have a
better knowledge,
what can eat so much resources in his code.. as well, as do a gracious failure
handling, e.g., correctly clean associated system resources etc.

--
Best regards,
Igor Stasenko.