#!/usr/bin/env ruby

puts "First, let's close a pipe across Ruby threads"
r, w = IO.pipe

Thread.new do
  w.close
  puts 'pipe closed'
end

sleep 1
puts "closed: #{r.closed?}"
puts "probably gonna return now"
r.eof?


puts "\nNow, let's try it across processes"
r, w = IO.pipe

fork do
  w.close
  puts 'pipe closed'
end

sleep 1
puts "closed: #{r.closed?}"
puts "probably gonna block forever now"
r.eof?
~