From: Joel VanderWerf <vjoel@...>
Date: 2009-09-02T09:35:18+09:00
Subject: Re: Process#poll

Roger Pack wrote:
> Joel VanderWerf wrote:
>> Roger Pack wrote:
>>> Question.
>>>
>>> Situation:
>>> I want to start a process, then loop, checking for its status, so that I
>>> can "know" when it finishes, and not block the Tk.mainloop.
>>>
>>> Anybody know how to determine runningness of a process in ruby?
>>> Thanks!
>> Don't the Process.wait family of methods do what you want? Maybe:
>>
>> Process.waitpid(pid, Process::WNOHANG)
> 
> Interesting.  I think that that's what Python's Process#poll uses 
> internally.  Unfortunately it appears that both it and Process::WNOHANG 
> and Linux only (I'm on doze).  Hmm.
> -r

The win32-process gem claims to handle some of that functionality...

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407