模拟银行家算法，检测死锁。当用户申请一组资源时，系统必须确定这些资源的分配是否仍会使系统处于安全状态。如果会，就可分配资源；否则，进程必须等待直到某个其他进程释放足够资源为止。-Analog banker s algorithm to detect deadlock. When users apply a set of resources, the system must determine whether the allocation of these resources is still c