Ruby's threads and non-blocking gets for Windows

Ruby's threads and non-blocking gets for Windows.rb

if RUBY_PLATFORM =~ /win32/
  require 'Win32API'
  $win32_console_kbhit = Win32API.new("msvcrt", "_kbhit", [], 'I')
  def console_input_ready?
    $win32_console_kbhit.call != 0
  end
  def nonblocking_stdin_gets
    sleep(0.1) until console_input_ready?
    $stdin.gets  # don't bother to use getc, it also blocks until user hits <return>
  end
else
  def nonblocking_stdin_gets
    $stdin.gets   # it just works, on unix
  end
end

threads = []

threads << Thread.new {
  while true
    input=nonblocking_stdin_gets
    exit if input.strip=="Q"
  end
}
threads << Thread.new {
  100.times do |t|
    puts "THREAD : #{t}"
    sleep(1)
  end
}
threads.each {|thr| thr.join}