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Edit File: task_fiber.rb

module Celluloid
  class FiberStackError < Celluloid::Error; end

# Tasks with a Fiber backend
  class TaskFiber < Task

def create
      queue = Thread.current[:celluloid_queue]
      actor_system = Thread.current[:celluloid_actor_system]
      @fiber = Fiber.new do
        # FIXME: cannot use the writer as specs run inside normal Threads
        Thread.current[:celluloid_role] = :actor
        Thread.current[:celluloid_queue] = queue
        Thread.current[:celluloid_actor_system] = actor_system
        yield
      end
    end

def signal
      Fiber.yield
    end

# Resume a suspended task, giving it a value to return if needed
    def deliver(value)
      @fiber.resume value
    rescue SystemStackError => ex
      raise FiberStackError, "#{ex} (please see https://github.com/celluloid/celluloid/wiki/Fiber-stack-errors)"
    rescue FiberError => ex
      raise DeadTaskError, "cannot resume a dead task (#{ex})"
    end

# Terminate this task
    def terminate
      super
    rescue FiberError
      # If we're getting this the task should already be dead
    end

def backtrace
      ["#{self.class} backtrace unavailable. Please try `Celluloid.task_class = Celluloid::TaskThread` if you need backtraces here."]
    end
  end
end

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