嵌入式操作系统中非阻塞的同步机制

传统阻塞同步的缺点在于容易引起进程死锁和优先级的翻转，为了有效解决此类问题，出现了一种新的同步机制——非阻塞同步，该同步机制主要包括锁自由同步和等待自由同步。介绍了非阻塞同步在操作系统中的实现前提——同步原语和类型稳定的存储器管理以及它的实现技术，最后根据嵌入式系统的特点，提出了把非阻塞同步用于嵌入式操作系统的思想。

Non-blocking Synchronization Mechanism for Embedded Operating System

The shortcoming of traditional blocking synchronization is too easily leading to process deadlock and priority inversion.A new synchronization mechanism is proposed to solve above-mentioned issue effectively,which is non-blocking synchronization.Non-blocking synchronization comes in two favors:lock-free and wait-free synchronization.This article introduces implementation premises,which covers synchronization primitive and type-stable memory management,and implementation technologies of non-blocking synchronization on OS.At last,according to the characteristic of embedded system,we put forward an idea that non-blocking synchronization is applied to embedded operating system.