From: Alex Young <alex@...>
Date: 2011-03-25T18:58:01+09:00
Subject: Pid of the other end of a popen3?

Is it possible to get the pid of a process at the other end of an IO
returned by Open3.popen3?  I'm doing something not dissimilar to this:


  Open3.popen3("other_process") do |ior, iow, ioe|
    otherpid = ior.pid

    raise "Oh no!" if otherpid.nil?
  end


And it always raises. Looking at the source for Open3.popen3, it looks
like the child pid gets swallowed by the double-fork. Is there any way
to get it back?

--
Alex

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