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page.change
- 功能介绍: l 输入进程P总共有的页面数,l 并输入系统已经在内存中分配的页面数。当所分配的页面数大于进程P的页面数时,l 则不l 需要进行页面调度工作。 l 由进程P的页面数目,l 程序随机生成一些访问内存的页面号,l 为简化程序,l 这些页面号的数目同l 进程P的进程数目一致(这个缺陷也有待改进)。 l 由用户选择FIFO算法还是LRU算法对进程P的页面访问内存分配的页面进行分配,l 并输出具体的页面访问过程。 原理介绍: 请求页式管理中的置换算法:置换算法在内存中没有空
ReactOS-0.3.3-REL-src
- ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。-ReactOS is a number of players under the Windows XP core classes to prepare XP. Core mechanism and realize almost the same API function call. Can even be compatible wi
os
- 操作系统实验,有简单的系统调用还有进程控制等问题。-Experimental operating system, a simple system call there are issues such as process control.
asyn_fifo
- verilog编写的异步fifo源代码,asyn_fifo.v为顶层,调用其他四个文件-asynchronous fifo prepared Verilog source code, asyn_fifo.v for top-level, call the other four documents
syscall
- 在做linuxshell设计时的系统调用的代码-Linuxshell doing the design of the system call code
lab1
- Nachos上开发的一个初级shell。Shell支持cd, dir, clr, environ, echo, help, pause and quit命令;上述命令之外的其他命令通过系统调用fork和exec创建子进程实现; -Nachos on the development of a primary shell. Shell support cd, dir, clr, environ, echo, help, pause and quit order the order other
J3
- nor flash驱动,可以在没有操作系统下,直接调用函数接口对flash进行读,写,擦除。 -nor flash drive, no operating system can directly call the function on the flash interface for reading, writing and erasing.
vb-xitong
- 一个可以调用windows系统工具,可以轻松打开系统程序-One can call a VB programming system tools
Minix_brk
- Minix下brk系统调用的改进与实现(含文档)-Minix improved under the brk system call
osruanzhongduan
- 操作系统实验 进程软中断通信 编写一段程序,父进程创建一个子进程p1;并使子进程利用系统调用kill()向父进程发送信号,父进程得到信号后输出字符串“received p1 signal.” 。 -Experimental process, the operating system write a soft interrupt communication procedures, the parent creates a child process p1 and to the child pro
DeleteProcess(vc)
- 镜像工作进程,派生新进程,删除进程,起到杀死进程的功能,调用的API函数-Mirroring the process, derive a new process, the removal process, the functions of play to kill the process, call the API function
threads
- nachos系统中对于线程机制的强化修改,实现了锁,随机变量以及管程的调用-nachos system to strengthen the mechanism for the thread changes, to achieve a lock, random variables, and call management process
duoxianc
- 让易语言多线程操作, 不会应为调用外部程序 应为等待无响应-Easy language multi-threaded operation, not should call an external program should be waiting for response
exper11_2
- 学习和掌握使用系统调用操作文件和目录的属性、内容的方法-system call to handle the directry and file
1
- 掌握系统调用fork()的使用方法及其功能; 利用系统调用sleep()调整父进程及各子进程的并发执行过程; 认真查看和比较每次执行结果,分析原因。 -Use to master the system call fork () function use system calls the sleep () to adjust the parent process and child process concurrent execution of process seriously
2
- 掌握系统调用pipe()的使用方法及其功能,理解管道通信原理; (2)掌握利用系统调用exit()和wait()实现父进程与子进程之间的同步,理解同步的含义。 -Master the system call pipe () to use its functions, to understand the pipeline communication theory (2) master system call exit () and wait () synchronization betw
3
- 正确应用系统调用signal()建立进程与信号(异步事件)之间的联系,理解信号机制; 正确应用系统调用getppid()、kill(),进步理解广义同步的含义。 -The correct application of the system call signal () to establish processes and signal (asynchronous events) the link between understanding the signaling mechanisms
4
- 掌握系统调用msgget()、msgsnd()、msgrevmsgctl()的使用方法及其功能,理解消息通信原理; 系统理解linux 的三种通信机制。 -Master the system call msgget, msgsnd (), msgrevmsgctl () to use its functions, to understand the message communication theory system to understand the linux three com
5
- 掌握系统调用shmget()、shmat()、shmdtshmctl()的使用方法及其功能,理解共享存储区通信原理; 系统理解linux 的三种通信机制。 -Master the system call shmget (), shmat (), shmdtshmctl () to use its functions, understanding, communication principle of shared storage area system to understand th
OS-Memory
- 操作系统中的内存置换算法实现,程序中对三种内存置换算法进行了分析,他们分别是:FIFO、LRU、OPT三种算法,并在程序最后列出了三种算法的堆栈调用情况。-Operating system' s memory replacement algorithm, three types of memory replacement algorithm analysis program, they are: FIFO, LRU, OPT three algorithms and listed at t