# File actioncable/lib/action_cable/server/stream_event_loop.rb, line 10
def initialize
  @nio = @thread = nil
  @map = {}
  @stopping = false
  @todo = Queue.new

  @spawn_mutex = Mutex.new
end

# File actioncable/lib/action_cable/server/stream_event_loop.rb, line 19
def attach(io, stream)
  @todo << lambda do
    @map[io] = @nio.register(io, :r)
    @map[io].value = stream
  end
  wakeup
end

# File actioncable/lib/action_cable/server/stream_event_loop.rb, line 27
def detach(io, stream)
  @todo << lambda do
    @nio.deregister io
    @map.delete io
    io.close
  end
  wakeup
end

# File actioncable/lib/action_cable/server/stream_event_loop.rb, line 45
def stop
  @stopping = true
  wakeup if @nio
end

# File actioncable/lib/action_cable/server/stream_event_loop.rb, line 36
def writes_pending(io)
  @todo << lambda do
    if monitor = @map[io]
      monitor.interests = :rw
    end
  end
  wakeup
end