Operating Systems Introduction
... To provide an environment for a computer user to execute programs on computer hardware in a convenient and efficient manner (Shells, Windows, Terminals, Executable files concept). ...
... To provide an environment for a computer user to execute programs on computer hardware in a convenient and efficient manner (Shells, Windows, Terminals, Executable files concept). ...
EECE 432– Operating Systems
... Students will work in teams to finish three projects. The first and second project will consist on modifying the kernel of an operating system to customize a specific behavior. The third project is to examine a case study or build a module from scratch where students get exposed and focus on one sp ...
... Students will work in teams to finish three projects. The first and second project will consist on modifying the kernel of an operating system to customize a specific behavior. The third project is to examine a case study or build a module from scratch where students get exposed and focus on one sp ...
evolution of operating systems
... ¾ Previously a detailed and involved process – installation is now automatic and common ¾ Where before the OS came with the computer you can now choose the version you want ¾ And yet still >> ...
... ¾ Previously a detailed and involved process – installation is now automatic and common ¾ Where before the OS came with the computer you can now choose the version you want ¾ And yet still >> ...
Introduction to Object Technology
... running on a computer The entity that can be assigned to and executed on a processor Characterized by a single sequential thread of execution, a current state, and an associated set of system ...
... running on a computer The entity that can be assigned to and executed on a processor Characterized by a single sequential thread of execution, a current state, and an associated set of system ...
lecture33-dec15
... • Key abstractions provided by the OS – Process • Related: threads, address space/virtual memory ...
... • Key abstractions provided by the OS – Process • Related: threads, address space/virtual memory ...
Operating Systems Course Outline
... is a program that acts as an intermediary between a user of a computer and the computer hardware. Two primary aims of an operating systems are to manage resources (e.g. CPU time, memory) and to control users and software. Operating system design goals are often contradictory and vary depending of us ...
... is a program that acts as an intermediary between a user of a computer and the computer hardware. Two primary aims of an operating systems are to manage resources (e.g. CPU time, memory) and to control users and software. Operating system design goals are often contradictory and vary depending of us ...
Page 1 •Program Execution •I/O Operation •File System
... devices. • It is volatile, not too large, not too slow. • The Manager is responsible for: Keep track of used and unused memory segments. Keep track which process is using which segment. Decide which processes to load when memory is available. Allocate and deallocate memory space. ...
... devices. • It is volatile, not too large, not too slow. • The Manager is responsible for: Keep track of used and unused memory segments. Keep track which process is using which segment. Decide which processes to load when memory is available. Allocate and deallocate memory space. ...
batch systems
... • structure - how is the OS organized? • sharing - how are resources shared among users? • naming - how are resources named by users or programs? • protection - how is one user/program protected from another? • security - how is the flow of information ...
... • structure - how is the OS organized? • sharing - how are resources shared among users? • naming - how are resources named by users or programs? • protection - how is one user/program protected from another? • security - how is the flow of information ...
File System
... Runs most of its services in the kernel workspace Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
... Runs most of its services in the kernel workspace Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
Module 3: Operating-System Structures
... • Program execution – system capability to load a program into memory and to run it. • I/O operations – since user programs cannot execute I/O operations directly, the operating system ust provide some means to perform I/O. • File-system manipulation – program capability to read, write, create, and ...
... • Program execution – system capability to load a program into memory and to run it. • I/O operations – since user programs cannot execute I/O operations directly, the operating system ust provide some means to perform I/O. • File-system manipulation – program capability to read, write, create, and ...
Linux-by-Blane-Adcock-Bryan-Knehr-Kevin-Estep-Jason
... – Total time the process has been in the system ...
... – Total time the process has been in the system ...
Document
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
Operating system concepts
... What is OS? • “Software that manages the sharing of the resources of a computer”---Wikipedia – Sharing by what? • Independent executables (programs) ...
... What is OS? • “Software that manages the sharing of the resources of a computer”---Wikipedia – Sharing by what? • Independent executables (programs) ...
talk
... • Provides users (application programmers) with “logical” well-behaved environment • O.S. defines a set of logical resources (objects) and a set of well-defined operations on those objects (i.e., an interface to use those objects) • Provides mechanisms and policies for the control of objects/resourc ...
... • Provides users (application programmers) with “logical” well-behaved environment • O.S. defines a set of logical resources (objects) and a set of well-defined operations on those objects (i.e., an interface to use those objects) • Provides mechanisms and policies for the control of objects/resourc ...
3460:426/526 Operating Systems
... Completion of 306 and 316, or 501, or equivalents with grades of C- or better. Text: Nutt, Operating Systems, 3rd Edition, Addison Wesley, 2004. Bulletin Description: Introduction to various types of operating systems: batch processing systems, multiprogramming systems and interacting processes: sto ...
... Completion of 306 and 316, or 501, or equivalents with grades of C- or better. Text: Nutt, Operating Systems, 3rd Edition, Addison Wesley, 2004. Bulletin Description: Introduction to various types of operating systems: batch processing systems, multiprogramming systems and interacting processes: sto ...
chapter 4
... scheduler and dispatcher within the operating system’s kernel The Scheduler : To keep track of all the processes, the scheduler maintains a block of information in main memory called the process table Each time a new task is assigned to the machine, the scheduler creates a process for that task ...
... scheduler and dispatcher within the operating system’s kernel The Scheduler : To keep track of all the processes, the scheduler maintains a block of information in main memory called the process table Each time a new task is assigned to the machine, the scheduler creates a process for that task ...
pdf of slides
... Processes and Threads • Processes – The illusion is great, but what if I want to share my memory with another process? – You can’t! ...
... Processes and Threads • Processes – The illusion is great, but what if I want to share my memory with another process? – You can’t! ...
Operating System
... and a printer. Programs in machine code were loaded via the input device (e.g., a card reader). If an error halted the program, the error condition was indicated by the lights. If the program proceeded to a normal completion, the output appeared on the printer. ...
... and a printer. Programs in machine code were loaded via the input device (e.g., a card reader). If an error halted the program, the error condition was indicated by the lights. If the program proceeded to a normal completion, the output appeared on the printer. ...
Slide 1
... Separate Processing of Object Files • Can partition one program into multiple files • Can also use subroutines defined by others • Let assembler process each file separately, making list of unknown external names • Object file augmented with list of names and list of instructions with external refe ...
... Separate Processing of Object Files • Can partition one program into multiple files • Can also use subroutines defined by others • Let assembler process each file separately, making list of unknown external names • Object file augmented with list of names and list of instructions with external refe ...
![[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt](http://s1.studyres.com/store/data/014183875_1-7af0f6b03bedcfbf8972c6054b446a98-300x300.png)
[Lecture 1, part 3] Kernel interaction with the hardware: Interrupt
... [Lecture 1, part 3] Kernel interaction with the hardware: Interrupt: Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt even ...
... [Lecture 1, part 3] Kernel interaction with the hardware: Interrupt: Like input / output, user input, between kernel and device driver. Devices call back by interrupts. They are serviced immediately. And they are user transparent. Implementation: Each device only has limited number of interrupt even ...
Introduction To Operating Systems
... A user program can’t use arbitrary amount of memory. A user program can’t access data belonging to the operating system or other user programs. • How to achieve memory protection? Indirect memory access: memory access with a virtual address which needs to be translated into physical address. ...
... A user program can’t use arbitrary amount of memory. A user program can’t access data belonging to the operating system or other user programs. • How to achieve memory protection? Indirect memory access: memory access with a virtual address which needs to be translated into physical address. ...
XOberon Operating System
... Context-switching that is performed on a perprocess base. - Fine tuned memory by using paging. ...
... Context-switching that is performed on a perprocess base. - Fine tuned memory by using paging. ...
Operating System Services
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request ...
... Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them Many types of resources - Some (such as CPU cycles, main memory, and file storage) may have special allocation code, others (such as I/O devices) may have general request ...
OPERATING SYSTEMS: DESIGN AND IMPLEMENTATION
... Figure 1-15. (a) File system before the mount. (b) File system ...
... Figure 1-15. (a) File system before the mount. (b) File system ...
Design of MS-DOS
... - Sets an historical perspective for modern PC-based OS’s. - Design Principles / Fundamentals - Basis of many other Disk(based) Operating Systems. • The first personal computer DOS, called Personal Computer Disk Operating System, was developed for IBM by Microsoft Corporation. • MS retained the righ ...
... - Sets an historical perspective for modern PC-based OS’s. - Design Principles / Fundamentals - Basis of many other Disk(based) Operating Systems. • The first personal computer DOS, called Personal Computer Disk Operating System, was developed for IBM by Microsoft Corporation. • MS retained the righ ...