Class: ThreadPool::Worker

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

Instance Method Summary collapse

Constructor Details

#initialize(thread_queue) ⇒ Worker

Returns a new instance of Worker.



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# File 'lib/thread_pool.rb', line 5

def initialize(thread_queue)
  @block = nil
  @mutex = Mutex.new
  @cv = ConditionVariable.new
  @queue = thread_queue
  @running = true
  @thread = Thread.new do
    @mutex.synchronize do
      while @running
        @cv.wait(@mutex)
        block = get_block
        if block
          @mutex.unlock
          block.call
          @mutex.lock
          reset_block
        end
        @queue << self
      end
    end
  end
end

Instance Method Details

#busy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/thread_pool.rb', line 49

def busy?
  @mutex.synchronize { !@block.nil? }
end

#get_block ⇒ Object 



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# File 'lib/thread_pool.rb', line 32

def get_block
  @block
end

#name ⇒ Object 



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# File 'lib/thread_pool.rb', line 28

def name
  @thread.inspect
end

#reset_block ⇒ Object 



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# File 'lib/thread_pool.rb', line 45

def reset_block
  @block = nil
end

#set_block(block) ⇒ Object 



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# File 'lib/thread_pool.rb', line 36

def set_block(block)
  @mutex.synchronize do
    raise RuntimeError, "Thread already busy." if @block
    @block = block
    # Signal the thread in this class, that there's a job to be done
    @cv.signal
  end
end

#stop ⇒ Object 



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# File 'lib/thread_pool.rb', line 53

def stop
  @mutex.synchronize do
    @running = false
    @cv.signal
  end
  @thread.join
end