From: Lloyd Zusman <ljz@...>
Date: 2004-11-23T08:01:51+09:00
Subject: Re: fast shutdown of webrick

Simon Strandgaard <neoneye@adslhome.dk> writes:

> On my box trap(:INT){ s.shutdown } takes some time to complete.
> Im wondering how one can shut it down fast and safe.
>
> Is this an ok way to shut it down?
>
> trap(:INT) do 
>   fork{ s.shutdown }
>   exit! 
> end

I'm not sure why you would need the fork.

I just do this, and it dies very quickly.

  %w[ SIGHUP SIGINT SIGQUIT SIGTERM ].each {
    |sig|
    trap(sig) {
      # I forget whether or not the reference to the server 
      # needs to be stored in a global in order for it to
      # be seen here.  I do it anyway, just in case.
      $s.shutdown
    }
  }


> btw: Any clues how to quickly restart webrick ?

I use the 'runit' system to manage a lot of my daemons, including the
one I use for webrick.  Check it out here:

  http://smarden.org/runit

I can completely restart my webrick daemon in about 5-10 seconds using
the 'runsvctrl' program that's part of this system.

I trap SIGHUP and SIGTERM above in addition to SIGINT because I can
easily send these signals to the daemon via 'runsvctrl'.  I also throw
SIGQUIT in there because some systems switch the meaning of SIGQUIT and
SIGINT, and I always forget which ones do which.


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.