From: Carl Youngblood <carl@...>
Date: 2003-12-20T08:46:53+09:00
Subject: Re: 'Daemonizing' a script

Never mind.  I feel sheepish for bothering the list with this.  I just 
needed to turn off error output to /dev/null to see what was going on. 
Sorry. :-(

Carl Youngblood wrote:
> I got this code from Webrick::Daemon that is supposed to turn a ruby 
> script into a daemon.  Though I don't fully understand it, I guess that 
> means that it detaches it from the terminal that called it.  The thing 
> is, when I run the script without the daemonizing code it works fine, 
> but when I add the following code it silently croaks.  Does anybody know 
> what might be going wrong?
> 
> Thanks,
> Carl Youngblood
> 
> #------------------------------
> 
> # the following lines "daemonize" this script
> exit!(0) if fork
> Process::setsid
> exit!(0) if fork
> Dir::chdir("/")
> File::umask(0)
> [ STDIN, STDOUT, STDERR ].each{|io|
>     io.reopen("/dev/null", "r+")
> }
> 
> # This is a session storage daemon which can be shared by multiple FCGI
> # processes. It's just a hash which is enabled for DRb access.
> 
> require 'drb'
> require 'include/localsettings'
> 
> session_data = Hash.new
> DRb.start_service("druby://127.0.0.1:#{SESSION_PORT.to_s}", session_data)
> DRb.thread.join
>