Course number and name CSC 345 – Operating Systems Credits
... Specific outcomes of instruction, ex. The student will be able to explain the significance of current research about a particular topic. 1. Have a fundamental operating system understanding that is the software layer between user programs and the computer hardware; 2. Have a rudimentary understandin ...
... Specific outcomes of instruction, ex. The student will be able to explain the significance of current research about a particular topic. 1. Have a fundamental operating system understanding that is the software layer between user programs and the computer hardware; 2. Have a rudimentary understandin ...
Introduction to Object Technology
... for building software and applications.Make it easier for developers to use certain technologies in building applications by abstracting the underlying implementation (e.g. POSIX, Windows API, and Java API) ...
... for building software and applications.Make it easier for developers to use certain technologies in building applications by abstracting the underlying implementation (e.g. POSIX, Windows API, and Java API) ...
Exercises
... Answer: Mechanismand policymust be separate to ensure that systems are easy to modify. No two system installations are the same, so each installation may want to tune the operating system to suit its needs. With mechanism and policy separate, the policy may be changed at will while the mechanism sta ...
... Answer: Mechanismand policymust be separate to ensure that systems are easy to modify. No two system installations are the same, so each installation may want to tune the operating system to suit its needs. With mechanism and policy separate, the policy may be changed at will while the mechanism sta ...
Lecture 3 - The College of New Jersey
... protection of system resources since each virtual machine is isolated from all other virtual machines. This isolation, however, permits no direct sharing of resources. A virtual-machine system is a perfect vehicle for operating-systems research and development. System development is done on the vi ...
... protection of system resources since each virtual machine is isolated from all other virtual machines. This isolation, however, permits no direct sharing of resources. A virtual-machine system is a perfect vehicle for operating-systems research and development. System development is done on the vi ...
System Calls,Kernel Mode, and Process
... ❖ ready: The process is waiting to be assigned to a processor! ❖ running: Instructions are being executed! ❖ waiting: The process is waiting for some event to occur! ❖ terminated: The process has finished execution ...
... ❖ ready: The process is waiting to be assigned to a processor! ❖ running: Instructions are being executed! ❖ waiting: The process is waiting for some event to occur! ❖ terminated: The process has finished execution ...
Processes Process States
... Process States • Five states in general, with specific operating systems ...
... Process States • Five states in general, with specific operating systems ...
Operating Systems Operating Systems Operating Systems
... thus should be separate from the mechanisms used to enforce them. An ideal mechanism is general enough to support a wide range of policies. ...
... thus should be separate from the mechanisms used to enforce them. An ideal mechanism is general enough to support a wide range of policies. ...
Operating System
... With the earliest computers, from the late 1940s to the mid-1950s, the programmer interacted directly with the computer hardware; there was no OS.These computers were run from a console consisting of display lights, toggle switches, some form of input device, and a printer. Programs in machine code ...
... With the earliest computers, from the late 1940s to the mid-1950s, the programmer interacted directly with the computer hardware; there was no OS.These computers were run from a console consisting of display lights, toggle switches, some form of input device, and a printer. Programs in machine code ...
Limited Direct Execution
... • Kernel enters “switch code” in the context of the interrupted process and returns in the context of the soon-to-be-executing process • Two types of register saves/restores – when timer interrupt occurs, user registers of running process are implicitly saved by hardware into kernel stack of that pr ...
... • Kernel enters “switch code” in the context of the interrupted process and returns in the context of the soon-to-be-executing process • Two types of register saves/restores – when timer interrupt occurs, user registers of running process are implicitly saved by hardware into kernel stack of that pr ...
Homework 1
... has only 2 jobs: A and B. Provide a scenario where running the jobs sequentially will provide better performance (measured by having a smaller makespan) compared to running them in parallel. If such a scenario does not exist, explain why. Otherwise, explain the particulars of jobs A and B and how it ...
... has only 2 jobs: A and B. Provide a scenario where running the jobs sequentially will provide better performance (measured by having a smaller makespan) compared to running them in parallel. If such a scenario does not exist, explain why. Otherwise, explain the particulars of jobs A and B and how it ...
Processes
... • Ready queue – set of all processes residing in main memory, ready and waiting to execute. • Device queues – set of processes waiting ...
... • Ready queue – set of all processes residing in main memory, ready and waiting to execute. • Device queues – set of processes waiting ...
Operating system organization
... Seek to minimize “overhead” of the system wrt the applications running on the system Increased hardware performance does allow added functionality in spite of inefficiency ...
... Seek to minimize “overhead” of the system wrt the applications running on the system Increased hardware performance does allow added functionality in spite of inefficiency ...
Introduction to Computer Science
... message. The transport layer address is the process identification, called a port number. 5. What are the components of an operating system? (10%) Components of an operating systems are user interface, memory manager, process manager, device manager, and file manager. 6. How is demand paging more ef ...
... message. The transport layer address is the process identification, called a port number. 5. What are the components of an operating system? (10%) Components of an operating systems are user interface, memory manager, process manager, device manager, and file manager. 6. How is demand paging more ef ...
Intro - Stanford Secure Computer Systems Group
... • Protection mechanism to prevent monopolizing CPU • E.g., kernel programs timer to interrupt every 10 ms - Must be in supervisor mode to write appropriate I/O registers - User code cannot re-program interval timer ...
... • Protection mechanism to prevent monopolizing CPU • E.g., kernel programs timer to interrupt every 10 ms - Must be in supervisor mode to write appropriate I/O registers - User code cannot re-program interval timer ...
Tutorail-two-with
... kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
... kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
OS Basics
... schedule and allocation. Resources mean processor(s), memory, I/Os devices, virtual devices(pipes & Sockets), System timer, Keyboard, displays printer and other such resources which processes (task or threads) request from the OS. ...
... schedule and allocation. Resources mean processor(s), memory, I/Os devices, virtual devices(pipes & Sockets), System timer, Keyboard, displays printer and other such resources which processes (task or threads) request from the OS. ...
Process Description and Control
... Submission of a batch job User logs on Created by OS to provide a service such as printing Spawned by an existing process ...
... Submission of a batch job User logs on Created by OS to provide a service such as printing Spawned by an existing process ...
Chapter 1: Intro to OS
... switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
Chapter 4
... there may be the occasion to locate hardware/software for an older OS • example OS9 - unix-like OS for 8-bit Motorola ...
... there may be the occasion to locate hardware/software for an older OS • example OS9 - unix-like OS for 8-bit Motorola ...
Chapter 4
... there may be the occasion to locate hardware/software for an older OS • example OS9 - unix-like OS for 8-bit Motorola ...
... there may be the occasion to locate hardware/software for an older OS • example OS9 - unix-like OS for 8-bit Motorola ...
History of Operating Systems
... The use of integrated circuits dramatically improved computer speeds. Batch systems ran “continuously”, but only one job at a time. If a job was paused (to execute an IO process) the CPU was idle, if only for a few milliseconds. The same philosophy that led to 2nd generation systems held - how to ma ...
... The use of integrated circuits dramatically improved computer speeds. Batch systems ran “continuously”, but only one job at a time. If a job was paused (to execute an IO process) the CPU was idle, if only for a few milliseconds. The same philosophy that led to 2nd generation systems held - how to ma ...