Linux内核中信号量机制的研究与实现

Research and Realization on Semaphore Mechanism in Linux Kerne

信号量是Linux内核中对竞相进入临界区的进程进行同步机制的有效手段。即使在最新版本的Linux-2.6.12内核中,也没有对等待进入临界区的进程链表进行优化,在实时系统中这是一个缺陷,本文重点通过研究内核下的信号量同步机制,针对实时系统提出一种改进的方案。

Semaphore is an effective means of synchronizing tasks which compete against each other to enter the same critical section. Even in the latest version of Linux-2.6.12, no optimized design has been made for the chains of tasks which wait to enter the same critical section. There is some limitations in the system which is highly in need of real time. This paper is so important studying on semaphore mechanism in Linux kernel that has contributed to improve the limitations.