操作系统教学课件ch11File System Implementation.ppt,Chapter 11: File System Implementation Chapter 11: File System Implementation File-System Structure File-System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency
OS_chapter_2_190407 OS_chapter_2 2.1 the logical struct of OS 仅重点or索引,具体见ppt os的设计和实现思路 整体式 层次式 微内核(client/server) 整体式: module 为基本单位 , eg: the function of C module多以全局变量形式完成 层次结构: eg: TCP/IP Func以调用order排列若干层;相邻层之间只有单向...
操作系统Chapter12_OSFile Management演示教学.ppt,File Management -File and Directory structure;12.1 FILE CONCEPT;File concept;File concept: Attributes (属性);File concept: Types (类型);File concept: Operations (操作);12.2 FILE ACCESS;File access: Other a
in the directory structure which is maintained on the disk File Operations I IFile is an abstract data type OS provides the 6 basic system calls 1 Create allocate space create an directory entry 2 Write write pointer 3 Read read pointer 4 Reposition within fi le also known as seek 5 Delete...
11.7 In-Memory File System Structures 11.8 Virtual File Systems ? Virtual File Systems (VFS) provide an object-oriented way of implementing file systems. ? VFS allows the same system call interface (the API) to be used for different types of file systems. ? The API is to the VFS ...
The PowerPoint files that are present in the hard drive can get corrupt due to OS re-installation Sudden or indecent system shutdown while processing a PPT file can cause severe corruption While transferring PowerPoint files between different storage media can cause damage to the contents of the ...
2 Outline Abstraction:file File Afileissimplyalineararrayofbytes,eachof whichyoucanreadorwrite.numberofsomekind: Eachfilehassomekindoflow-levelname,usuallya Forhistoricalreasons,itisoftenreferredtoasitsinodenumber.Theuserisnormallynotawareofthisname.Thefilesystemistostorethedata...
Fix Error PowerPoint Can't Open Type of File Represented by PPT Read this page in order to fix PowerPoint can't open the type of file represented by PPT error on Windows system. Fixing PowerPoint Error Cannot Read File Go through this page to find out the best solution to fix PowerPoint ...
You can connect to the computer with only a scan of the mobile phone. The management is clear, the traffic data is intuitive, the multiple encryption technology is safe, the resource usage is very small, and it supports Window, Mac os, Ubuntu Three platforms have been updated to V1.2 ...
If you created or received a presentation made in Keynote, steps to open, view and edit this file on Windows using Powerpoint With Keynote, you EXPORT your Keynote presentation into a Powerpoint document. Keynote presentations then are saved as Powerpoint (.ppt or pptx) files. To do this,...