摘要
本文提供了一种检测操作系统中死锁的方法.该方法包含三个步骤:(1)通过检测进程加锁与解锁是否匹配来获得锁的持有者;(2)从异常进程中筛选出锁的等待者;(3)通过检查锁的持有者与等待者是否会形成循环等待图来判定死锁.通过实验发现,该方法对系统性能的影响小于1%,而且不需要修改内核源码和源程序.
This paper introduces a method to detect operating system deadlock. The method consists of three stages: (1) finding the lock-holders by detecting whether the locks and unlocks are paired. (2) finding the lock-waiters by filtering the abnormal process. (3) the method will occur deadlock warning if there is a cycle in the waits-for graph. The results show that the method has only 1% influence to the performance, and does not need to modify Linux kernel and detected program source code.
出处
《计算机系统应用》
2013年第10期14-18,共5页
Computer Systems & Applications
基金
国家自然科学基金(61272131
61202053)
江苏省自然科学基金(SBK201240198)
关键词
操作系统
死锁检测
并发程序
异常进程
operating system
deadlock detection
concurrent programs
abnormal processes