From: David Corbin <dcorbin@...>
Date: 2002-03-31T09:24:40+09:00
Subject: Re: Process Mgmt wrapper?

Phil Tomson wrote:

>In article <3CA5C55C.8050105@imperitek.com>,
>David Corbin  <dcorbin@imperitek.com> wrote:
>
>>David Corbin wrote:
>>
>>>1) I am aware of the Process module, as well as Kernel
>>>2) I need to be able to
>>>   a) launch an external processes
>>>   b) provide access to process status (running, terminated cleanly, 
>>>abnormaly terminated)
>>>   c) prevent another instance of *this* process from being launched
>>>   d) perhaps process some of the output "on demand"
>>>
>>One more thing I'd like to see:
>>       e) it should be able to "recover" if the parent process 
>>dies/terminates and gets restarted.
>>
>>>  I know I can do all this from ruby, but it's a bit involved.  My 
>>>question is, has anyone written a class wraps all this up in simple 
>>>interface?
>>>
>
>
>And I would add one more thing:
>f) provides a common frontend for dealing with both Unix and Win32 
>processess.
>
>I agree - we could probably use something a bit more OO than the Process 
>module.  It might be nice for it to work like:
>
>
>timeout = 1000 #1000 seconds to complete
>p = Process.new(timout) { |parentPID,inputHandle,outputHandle|
>    ... some stuff to do ... 
>}
>p.id #=> 1234
>p.running? #=> true
>p.timedout? #=> false
>p.status #=> :running, :normal_exit, :killed
>p.get #=> get output from process
>sleep 20
>p.kill #kill the process
>
>
>Phil
>
While windows compatibility is a desireable goal, I personally don't 
need it a the moment.