From: Rik Hemsley <rik@...>
Date: 2001-11-05T18:38:47+09:00
Subject: [ruby-talk:24379] Problem with readline and select

The following program takes ~6s to complete when using readline in the
main thread. It takes ~0s to complete when using sleep.

Some kind of clash between readline and IO.pipe/select ?

Ruby from CVS, checked out a couple of days ago.

Rik

===============================8<=================================

require 'readline'

$rd, $wr = IO.pipe

t = Time.now

Thread.new do
  1.upto(20) do
    select([$rd])
    $rd.read(100)
  end
  $stderr.print "Time taken: ", (Time.now - t).to_s, "\n"
  exit 0
end

Thread.new do
  buf = "a" * 100
  loop do 
    $wr.write(buf)
  end
end

if ARGV[0] == 'rl'
  Readline.readline("> ", true)
else
  sleep 10
end

===============================>8=================================