曙光一号操作系统SNIX核心代码的并行化方法及锁机制

THE MULTITHREADING METHOD AND LOCK PRIMITIVES IN SNIX OPERATING SYSTEM

本文在阐述已有单机ＵＮＩＸ核心并行化方法的基础上，介绍曙光一号共享存储多处理器系统运行的操作系统ＳＮＩＸ（ＳｙｍｍｅｔｒｉｃＵＮＩＸ）中基于全局数据依赖性统计的并行化方法．包括三类锁的实现方法，加锁的策略，死锁的预防等．最后给出对系统的测试结果．

This paper describes the method of multithreading the UNIX kernel based on global data dependence analysis used in SNIX operating system. The implementation of lock primitives, strategies in selecting the places and lock primitives and deadlock prevention method are also introduced. In the appendix, some statistics about the kernel parallelization degree is also given.