From: Hans Fugal <fugalh@...>
Date: 2008-02-22T00:20:02+09:00
Subject: Timers and Alarms

I want a program to wait for some moment in time, and resume operation 
at that moment. sleep is ruled out because it just counts cycles and is 
thrown off when my laptop suspends.

In C I'd use a one-fire timer, using setitimer. But in some quick 
googling it looks like the ruby interpreter may use setitimer internally 
for thread scheduling. Is there a safe way in ruby to sleep until a real 
moment in time?