# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 8
def initialize
  @nio = @executor = @thread = nil
  @map = {}
  @stopping = false
  @todo = Queue.new

  @spawn_mutex = Mutex.new
end

# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 28
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/connection/stream_event_loop.rb, line 36
def detach(io, stream)
  @todo << lambda do
    @nio.deregister io
    @map.delete io
    io.close
  end
  wakeup
end

# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 21
def post(task = nil, &block)
  task ||= block

  spawn
  @executor << task
end

# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 54
def stop
  @stopping = true
  wakeup if @nio
end

# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 17
def timer(interval, &block)
  Concurrent::TimerTask.new(execution_interval: interval, &block).tap(&:execute)
end

# File actioncable/lib/action_cable/connection/stream_event_loop.rb, line 45
def writes_pending(io)
  @todo << lambda do
    if monitor = @map[io]
      monitor.interests = :rw
    end
  end
  wakeup
end