From: Gilles Filippini <gilles.filippini@...>
Date: 2002-07-14T07:40:40+09:00
Subject: IO.pipe trick ?

Hi all,

I need someone shed some light on the following problem.

Here is the culprit script:
#--------------------------
output = IO.pipe
old_out = $defout.dup
old_out.sync = true
$defout = output[1]
thread = Thread.new {
	old_out.puts("@@@@ 1")
	while not output[0].eof?
		old_out.puts("@@@@ 2")
		select([output[0]])
		old_out.write(output[0].read)
	end
	output[0].close
}
puts `cat #{ARGV[0]}`
output[1].close
thread.join
#--------------------------

Try this script with a text file for the first argument:
- if the file's size is less than - say - 8 ko, the script works fine.
- if the file's size is more than - say - 10 ko, ruby hangs on the
  while statement.
What could be the reason for this behavior ?

Thanks in advance.
_gilles.