Class: Listen::Event::Loop

Inherits:
Object
  • Object
show all
Defined in:
lib/listen/event/loop.rb

Defined Under Namespace

Classes: Error

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Loop 



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# File 'lib/listen/event/loop.rb', line 12

def initialize(config)
  @config = config
  @wait_thread = nil
  @state = :paused
  @reasons = Thread::Queue.new
end

Instance Method Details

#pause ⇒ Object 



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# File 'lib/listen/event/loop.rb', line 53

def pause
  # TODO: works?
  # fail NotImplementedError
end

#paused? ⇒ Boolean 



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# File 'lib/listen/event/loop.rb', line 26

def paused?
  wait_thread && state == :paused
end

#processing? ⇒ Boolean 



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# File 'lib/listen/event/loop.rb', line 30

def processing?
  return false if stopped?
  return false if paused?
  state == :processing
end

#resume ⇒ Object 



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# File 'lib/listen/event/loop.rb', line 47

def resume
  fail Error::NotStarted if stopped?
  return unless wait_thread
  _wakeup(:resume)
end

#setup ⇒ Object 



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# File 'lib/listen/event/loop.rb', line 36

def setup
  # TODO: use a Fiber instead?
  q = Thread::Queue.new
  @wait_thread = Internals::ThreadPool.add do
    _wait_for_changes(q, config)
  end

  Listen::Logger.debug('Waiting for processing to start...')
  Timeout.timeout(5) { q.pop }
end

#stopped? ⇒ Boolean 



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# File 'lib/listen/event/loop.rb', line 67

def stopped?
  !wait_thread
end

#teardown ⇒ Object 



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# File 'lib/listen/event/loop.rb', line 58

def teardown
  return unless wait_thread
  if wait_thread.alive?
    _wakeup(:teardown)
    wait_thread.join
  end
  @wait_thread = nil
end

#wakeup_on_event ⇒ Object 



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# File 'lib/listen/event/loop.rb', line 19

def wakeup_on_event
  return if stopped?
  return unless processing?
  return unless wait_thread.alive?
  _wakeup(:event)
end