push

# File lib/thread.rb, line 296
  def push(obj)
    @mutex.synchronize{
      while true
        break if @que.length < @max
        @queue_wait.push Thread.current
        @mutex.sleep
      end

      @que.push obj
      begin
        t = @waiting.shift
        t.wakeup if t
      rescue ThreadError
        retry
      end
    }
  end