unicorn config file for EventMachine for development-use

unicorn.rb

worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true

GC.respond_to?(:copy_on_write_friendly=) and
  GC.copy_on_write_friendly = true
 
before_fork do |server,worker|
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end
 
after_fork do |server,worker|
  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
    
  if defined?(EventMachine)
    unless EventMachine.reactor_running? && EventMachine.reactor_thread.alive?
      if EventMachine.reactor_running?
        EventMachine.stop_event_loop
        EventMachine.release_machine
        EventMachine.instance_variable_set("@reactor_running",false)
      end
      Thread.new { EventMachine.run }
    end
  end
 
  Signal.trap("INT") { EventMachine.stop }
  Signal.trap("TERM") { EventMachine.stop }
end