1、　　进程的同步问题是操作系统处理机管理的一大核心问题，为了更好的理解和掌握操作系统管理的思想，现通过临界区的互斥访问来了解对临界资源的处理过程-1, the synchronization process of the operating system processor management is a major core issue, in order to better understand and master the operating system, management thought, is the critical area through exclusive access to critical resources to understand the process of