哲学家进餐例子。 哲学家问题的大意是：5个哲学家围坐在一张圆桌周围，每个哲学家面

前有一碟通心面,要使用筷子才能进餐。相邻两个碟子之间有一根筷子。哲

学家包含三种状态：吃饭、思考和挨饿。当一个哲学家觉得饿时，他才试

图分两次去取他左边和右边的筷子就餐，吃完以后放下筷子继续思考。-The dining philosophers example. Philosophers problem to the effect that: five philosophers sitting around a round table in front of each philosopher, a dish of macaroni, to use chopsticks in order to dine. Between adjacent two dishes with a chopstick. Philosophers contains three states: eating, thinking and hungry. When a philosopher feel hungry, he tried twice to pick up his left and right chopsticks dining, put down the chopsticks after eating continue to think about.