Chapter 3: Operating Systems
... circular table with a large bowl of spaghetti in the center. A fork is placed in between each pair of adjacent philosophers, and as such, each philosopher has one fork to his left and one fork to his right. As spaghetti is difficult to serve and eat with a single fork, it is assumed that a philosoph ...
... circular table with a large bowl of spaghetti in the center. A fork is placed in between each pair of adjacent philosophers, and as such, each philosopher has one fork to his left and one fork to his right. As spaghetti is difficult to serve and eat with a single fork, it is assumed that a philosoph ...
ppt
... connections among processes, users, and computer systems Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
... connections among processes, users, and computer systems Allow users to send messages to one another’s screens, browse web pages, send electronic-mail messages, log in remotely, transfer files from one machine to another ...
Operating-System Structures
... File-system manipulation - The file system is of particular interest. Programs need to read and write files and directories, create and delete them, search them, list file Information, permission management. ...
... File-system manipulation - The file system is of particular interest. Programs need to read and write files and directories, create and delete them, search them, list file Information, permission management. ...
slides
... • Device controller transfers blocks of data from buffer storage directly to main memory without CPU intervention. ...
... • Device controller transfers blocks of data from buffer storage directly to main memory without CPU intervention. ...
Introduction CS 111 On-Line MS Program Operating Systems Peter
... • Often, a lot of the program code will never be executed by a given process running it CS 111 Spring 2015 ...
... • Often, a lot of the program code will never be executed by a given process running it CS 111 Spring 2015 ...
Windows2000-Spr-2001-sect-2-group
... • Threads of lower priority are preempted so the higher priority threads can have access to the processor when they are ready • In the real time class, where all threads have a fixed priority that never changes, threads of equal priority are in a round-robin queue • In the variable priority class, a ...
... • Threads of lower priority are preempted so the higher priority threads can have access to the processor when they are ready • In the real time class, where all threads have a fixed priority that never changes, threads of equal priority are in a round-robin queue • In the variable priority class, a ...
Operating systems
... A user interface in some operating systems, such as UNIX, is called a shell. In others, it is called a window to denote that it is menu driven and has a GUI (graphical user interface) component. Networks and Communication Department ...
... A user interface in some operating systems, such as UNIX, is called a shell. In others, it is called a window to denote that it is menu driven and has a GUI (graphical user interface) component. Networks and Communication Department ...
Discovering Computers 2006
... What are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
... What are other program management features of operating systems? multiprocessing Can support two or more processors running programs at same time ...
2.01 - Tamkang University
... 2.3 System Calls Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application ...
... 2.3 System Calls Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application ...
introduction, means of i/o
... We shall discuss all of them in detail and how they can be used to perform I/O operations. 1.4 OPERATING SYSTEMS Systems programming is not just the study of programmable hardware devices. To develop effective system software one needs to the internals of the operating system as well. Operating syst ...
... We shall discuss all of them in detail and how they can be used to perform I/O operations. 1.4 OPERATING SYSTEMS Systems programming is not just the study of programmable hardware devices. To develop effective system software one needs to the internals of the operating system as well. Operating syst ...
Figure 5.01 - Operating System
... How could we achieve this? Given the process abstraction as we know it: fork several processes This is really inefficient!! Resource intensive ex: space: PCB, page tables, etc. Time consuming creating OS structures, fork and copy address space, etc. So any support that the OS can give ...
... How could we achieve this? Given the process abstraction as we know it: fork several processes This is really inefficient!! Resource intensive ex: space: PCB, page tables, etc. Time consuming creating OS structures, fork and copy address space, etc. So any support that the OS can give ...
HistoryAndHardware
... Each CPU runs an identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work to slave ...
... Each CPU runs an identical copy of the operating system. Many processes can run at once without performance deterioration. Most modern operating systems support SMP Asymmetric multiprocessing Each processor is assigned a specific task; master processor schedules and allocated work to slave ...
File System - UC Davis Computer Science
... open directory “two”, search for “three”, get loc. of “three” open file “three” (of course, permissions are checked at each step) ...
... open directory “two”, search for “three”, get loc. of “three” open file “three” (of course, permissions are checked at each step) ...
pps - AquaLab - Northwestern University
... PC is saved in a known place All previous instructions have been fully executed All following ones have not The execution state of the instruction pointed by PC is known ...
... PC is saved in a known place All previous instructions have been fully executed All following ones have not The execution state of the instruction pointed by PC is known ...
Discovering Computers 2006
... Summarize the features of several stand-alone operating systems Summarize the startup process on a personal computer Identify various network operating systems Describe the functions of an operating system ...
... Summarize the features of several stand-alone operating systems Summarize the startup process on a personal computer Identify various network operating systems Describe the functions of an operating system ...
Windows Server 2008
... Types of Operating Systems • Operating systems are organized by the size, type, and purpose of the computer on which they run – Example: the computer in a microwave oven needs device drivers for the LED display, keypad, and door close switches – Example: PC-class computers are designed for individu ...
... Types of Operating Systems • Operating systems are organized by the size, type, and purpose of the computer on which they run – Example: the computer in a microwave oven needs device drivers for the LED display, keypad, and door close switches – Example: PC-class computers are designed for individu ...
Computer Systems Architecture Learning Hours Information Sheet
... Aim: The course covers how programs are represented and executed by modern computers, low-level machine representations of programs and data; an understanding of how computer components influence program performance, assembly level machine organisation, memory system organisation and architecture, f ...
... Aim: The course covers how programs are represented and executed by modern computers, low-level machine representations of programs and data; an understanding of how computer components influence program performance, assembly level machine organisation, memory system organisation and architecture, f ...
DOC Security Model for the Next-Generation Secure Computing Base
... transmission of these malicious programs. NGSCB addresses this problem by isolating a specific portion of RAM within the address space to create curtained memory. An NGSCB addressing-mode bit is set to address this portion of memory, and the bit is added to the NGSCB CPU. Any subset of RAM pages can ...
... transmission of these malicious programs. NGSCB addresses this problem by isolating a specific portion of RAM within the address space to create curtained memory. An NGSCB addressing-mode bit is set to address this portion of memory, and the bit is added to the NGSCB CPU. Any subset of RAM pages can ...
Introduction to Operating System
... Software that controls a computer and acts as a layer between the hardware and the applications and users. (eg. ...
... Software that controls a computer and acts as a layer between the hardware and the applications and users. (eg. ...
Process - Tufts Computer Science
... We can use the same APIs for many different types of data and devices We also isolate the parts of the OS that must be changed in order to support new devices (USB key) or to run on a different CPU ...
... We can use the same APIs for many different types of data and devices We also isolate the parts of the OS that must be changed in order to support new devices (USB key) or to run on a different CPU ...
The Windows NT 4.0 Environment
... multitasking performance. Creates and maintains a list of hardware configurations to meet specific computer needs. Provides a browser that is fast and simple to use and compatible with existing standards. Receives and stores e-mail, including files and objects created in other applications. Runs 32- ...
... multitasking performance. Creates and maintains a list of hardware configurations to meet specific computer needs. Provides a browser that is fast and simple to use and compatible with existing standards. Receives and stores e-mail, including files and objects created in other applications. Runs 32- ...
Steps of porting (cont
... of system resources and could not control hardware directly user programs are working in user-space ...
... of system resources and could not control hardware directly user programs are working in user-space ...
1. Introduction
... Computer system can be divided into four components: Hardware – provides basic computing resources CPU, memory, I/O devices Operating system Controls and coordinates use of hardware among various applications and users Application programs – define the ways in which the system resources are used ...
... Computer system can be divided into four components: Hardware – provides basic computing resources CPU, memory, I/O devices Operating system Controls and coordinates use of hardware among various applications and users Application programs – define the ways in which the system resources are used ...