操作系统 华软软件学院软件工程系 P31 Available : Available Request 1 (3, 3, 2) (1, 0, 2) (2, 3, 0) Allocation 1 : Allocation 1 Request 1 (2, 0, 0) (1, 0, 2) (3, 0, 2) Need 1 : Need 1 Request 1 (1, 2, 2) (1, 0, 2) (0,