slaved

gistfile1.rb

def slaved(processes)
  pids = []
  processes.times do
    res=Kernel.fork 
    if res
      pids << res
    else
      yield
      exit 0
    end
  end

  puts pids
  ['TERM', 'HUP', 'INT'].each {|trap|
    Signal.trap(trap) { pids.each {|pid|
        puts "killing #{pid}"
        Process.kill('TERM', pid) ; }}}
  pids.each {|p| Process.waitpid(p)      }
  
end


slaved(3) { 10.times { sleep 1; puts "hi" } }
puts "finished"