According to the micro - kernel architecture , the kernel is divided into four modules : task handling , semaphore , message queue handling , exception and interrupt handling , more , the lock issue is added for reentry avoid 按照微內(nèi)核架構(gòu)的思想,將內(nèi)核分為任務處理,信號量,消息隊列,中斷及異常處理四個主要模塊,同時對軟件上防止重入的鎖機制進行單獨地分析。