导　　师： 蒋静

学科专业： H1202

授予学位： 硕士

作　　者： ;

机构地区： 青岛大学

摘　　要： 随着嵌入式系统的快速发展，在一些信息家电中，例如pda、机顶盒、dvd/vcd播放机等，图形用户界面(gui)越来越受到人们的重视。 minigui(mini graphical user interface)最初是一个自由软件项目，其目标是为基于linux的实时嵌入式系统提供一个轻量级的图形用户界面支持系统，可以运行在任何一种具有线程支持的posix兼容系统上。tron(the real-time operating system nucleus)是日本开发的拥有自主知识产权的操作系统标准，以其为基础的t-kernel是当前比较流行的，源码开放的嵌入式操作系统。minigui和t-kernel的结合，构成了具有优秀图形界面和实时响应功能的嵌入式软件开发平台。 本文首先通过对嵌入式系统基本原理和构成，特别是t-kernel操作系统理论的学习和研究，了解t-kernel操作系统的原理机制，然后分析minigui的体系结构，对minigui的源代码进行深入的研究和理解，其中重点对比分析了任务和线程的实现方法和调度规则以及t-kernel对posix标准接口的支持。通过对线程及线程库实现机制的研究，并结合minigui(mini graphical user interface)在嵌入式操作系统t-kernel上的移植，引入了任务(task)与线程(thread)一一映射模式，提出了移植方案。在此基础上，整理归类与移植相关的程序代码，搭建codewarrior forarm集成开发环境，进行移植源代码编写和编译等工作，最终实现了满足实时应用的基于t-kernel的posix线程库，完成了minigui在t-kernel上移植，并通过编写和执行测试程序，验证了该线程库能够满足嵌入式实时系统的要求。 With the quick developing of embeded RTOS/(Real Time Operating System/),the GUI is getting more attention in the area of information appliance,such as PDA,STB, DVD//VCD,ect. MiniGUI is a free software project.The aim of the project is to supply a light GUI support system,which can practically run on any POSIX compatible system.The T-Kernel is a very popular and open source embedded OS,base on TRON/(The Real-time Operating System Nucleus/),the Japanese EOS standard.The combination of these two system,composing a good graphical interface and real-time response function of embedded software development platform This paper first through studying and reseaching the theory of T-Kernel operating system to understand it's principle mechanism,and then analize the architecture of MiniGUI to comprehend the source code in-depth and Analysis comparatively the Implementation of task and thread and their scheduling rules,especially in the support to POSIX/(Portable Operating System Interface/) on T-Kernel.Combining with the migration of MiniGUI on T-Kernel and analyzing the threads library thoroughly,we introduce one-to-one model on relationship between task and thread and propose transplant programme.In the end,we realize the real time POSIX thread library and complete the transplant of MiniGUI on T-Kernel,test and verify the satisfaction to the requirement of Embedded and Real Time system by compiling and running the test program.

关 键 词： 嵌入式操作系统 线程库

分 类 号： [TP311.54]

领　　域： [自动化与计算机技术] [自动化与计算机技术]