From: Felix Windt <fwmailinglists@...>
Date: 2007-09-18T06:22:09+09:00
Subject: Re: loop a program on exit?

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> -----Original Message-----
> From: list-bounce@example.com 
> [mailto:list-bounce@example.com] On Behalf Of Michael Linfield
> Sent: Monday, September 17, 2007 1:12 PM
> To: ruby-talk ML
> Subject: Re: loop a program on exit?
> 
> John Joyce wrote:
> 
> > You're going into very platform specific territory there. 
> Potentially
> > malware like behavior.
> 
> this is true, i do see how it could be seen as malware behavior and i 
> should probably stay away from that. Its purpose is to make sure the 
> user cannot exit while its running its given functions, if 
> they were to 
> do this,  it could cause some serious problems :(
> 
> 
> > at_exit {exec "ruby", $0, *ARGS}
> thanks Tim Pease ill look into that
> 
> >END{
> >    code
> >}
> 
> i will give that a shot as well
> -- 
> Posted via http://www.ruby-forum.com/.
> 

Maybe treat the whole thing as a service and look into daemon supervisors,
there are several solutions out there. One somewhat popular one are djb's
daemontools (http://cr.yp.to/daemontools.html), though his
software/licensing in general has been subject to some controversy.

Then the supervisor monitors when your application closes (or a shell script
that starts a terminal that then automatically runs your application) and
respawns another instance. Entirely outside Ruby, and I'd expect many
platforms to have specific implementations you could use.

HTH,

FElix

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