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Articles, study notes, ...

License: BSD 2-Clause "Simplified" License

C 71.13% Makefile 28.87%

qnx's Introduction

这里是一些关于QNX的材料,也是笔者多年从事QNX相关工作的一些体会。

1.《从 API 开始理解 QNX》主要讲了QNX进行消息传递的基础,“频道”,“链接”,消息“发送”,“接收”与“回复”等,以及QNX是怎样通过这些基础元素实现客户-服务器系统的。

2.《优先级反转那点事儿》则从嵌入式系统的优先级反转,进而解释了在QNX上消息传递为何会引起优先级反转,QNX是怎样防止其发生的。这个对于理解QNX上线程的优先级,以及系统优化非常重要。

3.《路径名空间与搜索》介绍了QNX的路径名管理,详细解释了QNX是如何从路径空间中找到为用户路径服务的资源管理器的。

4.《QNX资源管理器》详细解释了QNX资源管理器的基本设计,管理器框架,并以实际代码示例。希望能够帮助读者掌握QNX资源管理器,从而更容易地搭建系统。

5.《QNX的调度算法》全面介绍了QNX上几种基本调度算法(论询,先入先出,零星);同时也讨论了在SMP上调度算法的一些优化;另外,还有相当篇幅介绍了QNX独特的自适应分区调度机制,讨论了这种调度机制带来的新挑战。

6.《微内核架构与互连互通》讨论了为什么微内核架构最适合于“互连互通”的建设,同时也介绍了QNX透明式分布处理,给出了具体的使用实例。

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