From: sgibson <steve.w.gibson@...>
Date: 2008-07-10T10:01:05+09:00
Subject: IO.select timeout problem

Using ruby 1.8.6 under Linux.  For some reason IO.select() seems to be
ignoring the 'timeout' parameter.  Regardless of what value I put in
there (float or integer) it doesn't seem to have any effect -- if
there isn't any data available on stdout or stderr, select() just
waits until there is data:

@stdin, @stdout, @stderr = Open3.popen3("./myprog")
return_data = ""
loop do
  while result = select([@stdout, @stderr], nil, nil, 0.25)
    for data in result[0]
      if data == @stdout
        return_data = return_data + @stdout.gets
        logit("debug: return_data = " + return_data)
      elsif data == @stderr
        return_data = return_data + @stderr.gets
      end
    end # for
  end # while
  logit("debug: timed out -- waiting for data...")
  if return_data != ""
    send_to_user(return_data)
    return_data = ""
  end
end # loop


Am I missing something?

-Steve