gerneral os development

设备管理是模拟系统的设备分配问题，欢迎下载-Equipment management is a simulation system for the distribution of the equipment are welcome to download

通过研究Linux的线程机制和信号量实现读者写者(Reader-Writer)问题并发控制。 1)写-写互斥：不能有两个写者同时进行写操作； 2）读-写互斥：不能同时有一个线程在读，而另一个线程在写； 3）读-读允许：可以有一个或多个读者在读； 4）读者优先的附加限制：如果读者申请进行读操作时已有另一个读者正在进行读操作，则该读者可直接开始读操作； 5）写者优先的附加限制：如果一个读者申请进行读操作时已有另一个写者在等待访问共享资源，则该读者必须等到没有写者处于等待状态后才能开始读操作。 -By studying the Linux thread mechanism and semaphores realize readers who write (Reader-Writer) the issue of concurrency control. 1) to write- write mutex: Can not write at the same time there are two write operations 2) read- write mutex: Can not have a thread at the same time in reading and writing another thread 3) Reading- Reading of permit: can have one or more readers read 4) the priority of additional restrictions readers: If the readers apply for a read operation, there was another reader being read, the reader can be directly started reading operation 5) to write additional priority Restrictions: If an application for a reader reading write operation has been in waiting for another visit to a shared resource, the read

UCOS在我的MIPS CPU上的移植 1. 这是UCOS在我的MIPS CPU上的移植代码, 编译工具使用标准的MIPS GCC. 2. 所有CPU相关的代码全在start.S中,相关函数说明如下: -UCOS in my MIPS CPU on one transplant. This is uCOS MIPS CPU in my code the transplant, the compiler uses the standard tools for MIPS GCC.2. All CPU-related code-wide in start.S, the correlation function as follows :

页面置换之LRU与FIFO-Zhi LRU replacement pages with FIFO

很好用的DOS工具,可以在XP下面启动到DOS方式 具体内容可以参考代码-n/b

QNX 操作系统下 Freescale MPC8641DHPCN 开发板的板级支持包-QNX operating system Freescale MPC8641DHPCN development board of the Board Support Package

操作系统关于生产者消费者问题的-Operating system on the producers of consumer issues

我个人编写的操作系统,实现了保护模式并切换到用户态运行用户进程,对与操作系统初学者有一定帮助!-I personally prepared by the operating system, achieved a protected mode and switch to user mode users running process, with the right operating system will definitely help beginners!

哲学家进餐问题Java版-dining philosophers problem Java version

进程调度主要是操作系统中用于模仿操作的进程的-The process of scheduling the operating system is mainly used to mimic the operation of the process