操作系统大型实验：模拟LINUX文件系统

c语言的小编译器,学习的好东东.-small c language compiler, a good learning Wanton.

嵌入式文件系统制作工具，非常实用，可以用来制作文件系统-Embedded file system tool, very useful and can be used to create the file system

J2ME是Java 2平台的一个版本，使用在各种各样的消费电子产品和嵌入式设备上。Java Card技术规范得Java应用能运行在智能卡和更小的嵌入式设备上。本文介绍J2ME和Java Card的硬件平台和软件体系结构，以及如何进行J2ME和Java Card应用程序开发。Java在移动通信领域的应用已经引起广泛的关注，本文对此进行了详细的描述。-J2ME Java 2 Platform, a version of used in a wide range of consumer electronic products and embedded devices. Java Card specifications in Java applications can run on smart cards and small embedded devices. This paper introduces J2ME and Java Card hardware platforms and software architecture, and how J2ME and Java Card application development. Java in the area of mobile communications applications has attracted widespread attention, the paper carried a detailed description.

扩展的动态内存机制 任务综述 本任务扩展了自己私有的内存管理机制。首先使用预先规划的思想，使用预先分配的内存池和内存分区，再通过使用消息队列作为内存池的管理机制处理内存块分配与释放的过程，而消息队列中保存的是每个预先申请内存块的地址。当用户需要分配一个内存块时，使用msgQReceive() 函数从消息队列中获取一个相应大小的内存块地址；当用户需要释放一个内存块时，则使用msgQSend()函数将内存块首地址发送回消息队列中。通过这种方法，减少了内存反复申请与释放产生外部碎片的可能，并能够有效利用预先分配的思想减少内部碎片。同时也通过消息队列的特性实现了方便的内存块申请与释放的管理操作。 同时，本系统作为扩展的动态内存管理机制，引入了定制的内存分配与释放功能，使用了互斥机制保证操作安全性和一系列告警机制。在保证内存分配与释放安全有序的基础上，还增加了管理监视机制。 其系统具体实现参照系统实现部分。-none

A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running computation, block while waiting for an event, or read files from the file system. Unlike kernel drivers, a user-space device driver can use other device drivers--that is, access the network, talk to a serial port, get interactive input from the user, pop up GUI windows, or read from disks. User-space drivers implemented using FUSD can be much easier to debug it is impossible for them to crash the machine, are easily traceable using tools such as gdb, and can be killed and restarted without rebooting even if they become corrupted. FUSD drivers don t have to be in C--Perl, Python, or any other language that knows how to read from and write to a file descriptor can work with FUSD. User-space drivers can be swapped out, whereas kernel drivers lock physical memory.-A user-space device driver can do many of the things that kernel drivers can t, such as perform a long-running comput

一个完成的lru算法-a completed LRU algorithm

1.都江堰操作系统，写的相当不错，真如作者所说的是自己多年的心血结晶。 2.创新特色非常鲜明。 3.里面包含了keil MDK工程。-1. Dujiangyan operating system, written in quite good, gone, as the author calls the crystallization of their own for many years. 2. Innovative and extremely impressive. 3. Keil MDK project which contains the.

实时fifo先进先出队列，为内核线程间通信提供高效而且高可靠性通信机制-- fifo queue FIFO-to-thread communication between the kernel to provide high reliability and efficient communication mechanism

双飞燕a4 双飞燕a4 双飞燕a4 双飞燕a4 双飞燕a4 -Shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4 shuangfeiyan a4

C++写的操作系统原理及实现,模拟页面置换算法OPT的源码-C++ Write the operating system and realize the principle of simulated OPT page replacement algorithm for the source