push

# File lib/thread.rb, line 291
  def push(obj)
    t = nil
    @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
    }
    
    begin
      t.run if t
    rescue ThreadError
    end
  end