Class: Skein::TimeoutQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/skein/timeout_queue.rb

Instance Method Summary collapse

Constructor Details

#initialize(blocking: true, timeout: nil) ⇒ TimeoutQueue

Instance Methods =====================================================



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# File 'lib/skein/timeout_queue.rb', line 4

def initialize(blocking: true, timeout: nil)
  @response = [ ]
  @blocking = blocking
  @timeout = timeout&.to_f
  @mutex = Mutex.new
  @cond_var = ConditionVariable.new
end

Instance Method Details

#<<(result) ⇒ Object 



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# File 'lib/skein/timeout_queue.rb', line 12

def <<(result)
  @mutex.synchronize do
    @response << result

    @cond_var.signal
  end
end

#pop ⇒ Object 



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# File 'lib/skein/timeout_queue.rb', line 20

def pop
  @mutex.synchronize do
    if (@blocking)
      if (@timeout)
        timeout_time = Time.now.to_f + @timeout

        while (@response.empty? and (remaining_time = timeout_time - Time.now.to_f) > 0)
          @cond_var.wait(@mutex, remaining_time)
        end
      else
        while (@response.empty?)
          @cond_var.wait(@mutex)
        end
      end
    end

    if (@response.empty?)
      raise Skein::TimeoutException, 'Queue Empty: Time Out'
    end

    @response.shift
  end
end