【正文】
設(shè)備控制器(device controller/adapter)及其作用直接存儲器訪問(DMA)的原理、優(yōu)點(diǎn) Principles of I/O software設(shè)備無關(guān)性(device independence)及其含義 I/O software layers中斷處理程序(interrupt handlers)及其功能設(shè)備驅(qū)動(dòng)程序(device drivers)的定義及其功能與設(shè)備無關(guān)的I/O軟件(deviceindependent I/O software)及其功能用戶級的I/O軟件(userspace I/O software)及其功能 Disk disk formatting磁盤的三級格式化 disk arm scheduling algorithms重點(diǎn):三種磁盤調(diào)度算法(disk arm scheduling algorithms)—FCFS,SSF,ELEVATOR(給出初始方向),并能根據(jù)不同的磁盤調(diào)度算法計(jì)算尋道時(shí)間(seek time)Chapter 6 Deadlocks(所占比例:10%) Resources可搶占(preemptive)資源,不可搶占(nonpreemptive)資源的概念和區(qū)別;能夠區(qū)分計(jì)算機(jī)中的常用硬件資源哪些是可搶占的,哪些是不可搶占的 Introduction to deadlocks死鎖的定義死鎖產(chǎn)生的四個(gè)必要條件(conditions for resource deadlocks) Deadlock detection and recovery Deadlock detection with one resource of each type會利用資源分配圖檢測死鎖 Deadlock detection with one resource of each type每類資源有多個(gè)的死鎖檢測(detection) Deadlock avoidance重點(diǎn):銀行家算法(the banker’s algorithm)5