Module2:Computer-SystemStructures计算机系统结构Computer-SystemArchitecture计算机系统体系结构Computer-SystemOperation计算机系统操作中断机制Whytheinterrupt?commonfunctionsofinterruptsI/OStructureI/OInterruptssynchronousI/Odevice-statustable&waitqueueDMAstructureDirectMemoryAccessStorage-DeviceHierarchy存储设备层次MainMemorySecondaryStorageMoving-HeadDiskMechanism磁头移动机制cachecoherencyandconsistencyStorageHierarchy存储层次HardwareProtection硬件保护HardwareProtection硬件保护Dual-ModeOperation两状态运行Dual-ModeOperationI/OProtectionUseofasystemcalltoperformI/OMemoryProtectionMemoryProtectionCPUprotectionThetimerModule3:Operating-SystemStructures操作系统结构CommonSystemComponents系统部件ProcessManagement进程管理Main-MemoryManagement主存管理Main-MemoryManagement主存管理Secondary-StorageManagement二级存储管理I/OSystemManagementI/O系统管理FileManagement文件管理ProtectionSystem保护系统Networking(DistributedSystems)网络处理（分布式系统）Command-InterpreterSystem命令解释器系统Command-InterpreterSystem(Cont.)命令解释器系统AdditionalOperatingSystemFunctions其他操作系统功能OperatingSystemServices操作系统服务foruser(Whatcando?)OperatingSystemServices操作系统服务foruser(Whatcando?)CommunicationModelsAViewofOperatingSystemServicesServicesforthesystemitselfSystemCalls系统调用(Howtouse?)SystemCalls系统调用ProcessingofsystemcallProcessingofsystemcallProcessingofsystemcall(cont.)systemcallSystemCalls系统调用(Howtouse?)PassingofParametersAsATable表格方式的参数传递MS-DOSExecutionMS-DOS运行UNIXRunningMultipleProgramsUNIX运行多个程序SystemPrograms系统程序SystemPrograms系统程序SystemStructure–SimpleApproach系统结构-简单结构MS-DOSLayerStructureMS-DOS层次结构SystemStructure–SimpleApproach系统结构-简单结构UNIXSystemStructureUNIX系统结构SystemStructure–LayeredApproach系统结构-层次化结构LayeredOperatingSystemAnOperatingSystemLayer操作系统层LayeredStructureoftheTHEOSTHEOS的层次化结构OS/2LayerStructureOS/2层次化结构LayeredApproachMicrokernels微内核Microkernels微内核Microkernels微内核WindowsNTClient-ServerStructureWindowsNT客户机-服务器结构WindowsNT体系结构Microkernels微内核VirtualMachines虚拟机VirtualMachines虚拟机(Cont.)SystemModels系统模式Advantages/DisadvantagesofVirtualMachines虚拟机的优缺点Advantages/DisadvantagesofVirtualMachines虚拟机的优缺点JavaPr