通过实现经典的读者写者问题，巩固对线程及其同步机制的学习效果，加深对相关基本概念的理解，并学习如何将基本原理和实际设计有机的结合-Through the realization of the classical problem of the readers to write, to consolidate on the threads and synchronization mechanisms of learning and deepen the understanding of basic