英国帝国理工学院电脑系多线程课程教学材料之十一 ---- 读取者与写入者范例-The program allows Readers concurrent access to a resource while restricting Writers to exclusive access. Thread access to the shared resource is depicted by a light blue (cyan) arc segment. It is possible by starting the Reader threads at different times to create an execution in which Writer threads never get access to the resource.