From: Kyle Schmitt <kyleaschmitt@...>
Date: 2009-02-18T08:04:41+09:00
Subject: a little daemon daemonizes, but hangs the logout

I needed a little daemon thisafternoon, so I wrote one in ruby using
fork and Process.detach.  It's working ok I suppose, except that when
I logout, it hangs, and I have to kill my session.  It's a little
annoying, to say the least.  Anyone know a better way of doing this?



Thanks, code follows
--Kyle

#!/usr/bin/ruby
#I've chopped out the bulk of the code in the Monitor class, since
it's not really relevant, and not terribly clean either.
require 'net/smtp'

class Monitor
	def _setup_signals()
		death_signals=%w{KILL QUIT STOP TERM EXIT}
		Signal.trap("HUP") do
			_setup_logfile()
			_setup_ignores()
		end
		death_signals.each do
		|signal|
			Signal.trap(signal) do
				log("Caught #{signal} signal")
				@running=false
			end
		end
	end
	
	def loop
		while @running
		end
	end
end

pid = fork do
	m=Monitor.new
	m.loop
end
Process.detach(pid)