From: Robert Williams <rwilliams@...>
Date: 2007-11-07T06:39:15+09:00
Subject: Re: Changing date backward messes up threaded sleep

My application is a server based scheduler...
Schedules are scheduled for a calendar year.
My admin user may test the schedule by changing the system time time and 
time again. ;)

Anyway, my work around was to have a c program send a IPC message to the 
scheduler every second.  At which point the scheduler would watch for 
unusual time deviations and handle things accordingly...i.e. clean up a 
sleeping thread.

In other scenarios, as mentioned in the ruby rails thread (which I 
bumbed).  Daylight savings, or a move, may require a system clock change 
by the user.
It would be better to handle this case cleanly with out requireing the 
user shut down all ruby daemons which may make use of select in 
trheads....or require them to reboot.

my 2 cents.
Cheers!
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