From: Park Heesob <phasis68@...>
Date: 2006-11-11T10:07:07+09:00
Subject: Re: win32/process question




>From: J-Van <joevandyk@gmail.com>
>Reply-To: ruby-talk@ruby-lang.org
>To: ruby-talk@ruby-lang.org (ruby-talk ML)
>Subject: Re: win32/process question
>Date: Sat, 11 Nov 2006 09:29:10 +0900
>
....
>
>If I use Process.waitpid in a thread, all the other threads seem to
>block until the process that I'm waiting for stops.
>
>I'm writing a program that runs on a windows machine that listens for
>requests to start and kill programs.  It needs to be able to run and
>kill multiple programs and needs to be able to monitor the programs
>that it has started to make sure that they are still running.  If
>Process.waitpid makes the whole Ruby process hang, that's no good.
>
>Joe
>
If you don't want blocking, try WaitForSingleObect like this:

require 'win32/process'
include Windows::Handle
include Windows::Synchronize

info = Process.create :app_name=>'notepad'

begin
  i = WaitForSingleObject(info.process_handle,10)
  if i==WAIT_OBJECT_0
    CloseHandle(info.process_handle)
    CloseHandle(info.thread_handle)
  end

  # do something

end while i==WAIT_TIMEOUT


Regards,

Park Heesob

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