Re: Newbie: Code isn't executed

[tmoran@acm.org]

>Also, sharing Total between the tasks is poor, it should be a protected
>object.
  Worse, suppose Peter checks Total while Susan is dining with Michael.
Peter finds Total = 1 so he tries to rendezvous with Susan.  But Susan,
on returning from dinner, decrements Total, finds it to be zero,
prints statistics, and goes away.  Leaving poor Peter still trying to
rendezvous.
  You need a way for Peter and Michael to tell that Susan has gone away
and they should stop calling.  Anything that involves "find out if Susan
is taking calls, and if so call her" will fail if she leaves in the
interval between test and call.  Since dinner is a time-limited event,
they could use a select with timeout.  If she hasn't responded within a
reasonable time, they can give up.