Class: FiberScheduler::Timeouts

Inherits:
Object
  • Object
show all
Defined in:
lib/fiber_scheduler/timeouts.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Timeouts

Returns a new instance of Timeouts.



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# File 'lib/fiber_scheduler/timeouts.rb', line 7

def initialize
  # Array is sorted by Timeout#time
  @timeouts = []
end

Instance Attribute Details

#timeouts ⇒ Object (readonly)

Returns the value of attribute timeouts.



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# File 'lib/fiber_scheduler/timeouts.rb', line 5

def timeouts
  @timeouts
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/fiber_scheduler/timeouts.rb', line 12

def call
  now = Process.clock_gettime(Process::CLOCK_MONOTONIC)

  while @timeouts.any? && @timeouts.first.time <= now
    timeout = @timeouts.shift
    unless timeout.disabled?
      timeout.call
    end
  end
end

#inspect ⇒ Object 



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# File 'lib/fiber_scheduler/timeouts.rb', line 75

def inspect
  @timeouts.inspect
end

#interval ⇒ Object 



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# File 'lib/fiber_scheduler/timeouts.rb', line 62

def interval
  # Prune disabled timeouts
  while @timeouts.first&.disabled?
    @timeouts.shift
  end

  return if @timeouts.empty?

  interval = @timeouts.first.interval

  interval >= 0 ? interval : 0
end

#timeout(duration, *args, method: :raise, fiber: Fiber.current, &block) ⇒ Object 



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# File 'lib/fiber_scheduler/timeouts.rb', line 23

def timeout(duration, *args, method: :raise, fiber: Fiber.current, &block)
  timeout = Timeout.new(duration, fiber, method, *args)

  if @timeouts.empty?
    @timeouts << timeout
  else
    # binary search
    min = 0
    max = @timeouts.size - 1
    while min <= max
      index = (min + max) / 2
      t = @timeouts[index]

      if t > timeout
        if index.zero? || @timeouts[index - 1] <= timeout
          # found it
          break
        else
          # @timeouts[index - 1] > timeout
          max = index - 1
        end
      else
        # t <= timeout
        index += 1
        min = index
      end
    end

    @timeouts.insert(index, timeout)
  end

  begin
    block.call
  ensure
    # Timeout is disabled if the block finishes earlier.
    timeout.disable
  end
end