終止執行緒

如果執行緒到達其程式碼塊的末尾，則該執行緒終止。提前終止執行緒的最好方法是說服它到達其程式碼塊的末尾。這樣，執行緒可以在死亡之前執行清理程式碼。

該例項變數 continue 為 true 時，該執行緒執行迴圈。將此變數設定為 false，執行緒將自然死亡：

require 'thread'

class CounterThread < Thread
  def initialize
    @count = 0
    @continue = true

    super do
      @count += 1 while @continue
      puts "I counted up to #{@count} before I was cruelly stopped."
    end
  end

  def stop
    @continue = false
  end
end

counter = CounterThread.new
sleep 2
counter.stop