Last Class: Processes Example Unix Program: Fork
... Each process needs to be able to name the other process. The consumer is assumed to have an infinite buffer size. A bounded buffer would require the tests in the previous slide, and communication of the in and out variables (in from producer to consumer, out from consumer to producer). • OS keeps t ...
... Each process needs to be able to name the other process. The consumer is assumed to have an infinite buffer size. A bounded buffer would require the tests in the previous slide, and communication of the in and out variables (in from producer to consumer, out from consumer to producer). • OS keeps t ...
Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall
... – The OS allows access to the computer system by more than one user – The OS manages user requests ...
... – The OS allows access to the computer system by more than one user – The OS manages user requests ...
(IT) - Sem - III - Modern Operating System
... performance distributed computing. In Clustered systems, if the monitored machine fails, the monitoring machine can take ownership of its storage, and restart the application(s) that were running on the failed machine. The failed machine can remain down, but the users and clients of the application ...
... performance distributed computing. In Clustered systems, if the monitored machine fails, the monitoring machine can take ownership of its storage, and restart the application(s) that were running on the failed machine. The failed machine can remain down, but the users and clients of the application ...
Process Management in xv6
... • To create the first process, the allocproc function is used to allocate a proc structure, much like in fork. Next, the trap frame of this child process is hand-created (lines 2514-2520) to look like the process encountered a trap right on the first instruction in its memory (i.e., the EIP saved in ...
... • To create the first process, the allocproc function is used to allocate a proc structure, much like in fork. Next, the trap frame of this child process is hand-created (lines 2514-2520) to look like the process encountered a trap right on the first instruction in its memory (i.e., the EIP saved in ...
Project 2, Linux Kernel Hacking
... • Note: each different system call has its own number or other identity. • Kernel trap handler uses syscall number to index into table of syscall routines CS-502 (EMC) Fall 2009 ...
... • Note: each different system call has its own number or other identity. • Kernel trap handler uses syscall number to index into table of syscall routines CS-502 (EMC) Fall 2009 ...
Minor Thesis presentation
... allow us to fully utilize this FPGA hardware. • With the development of soft processor MicroBlaze and built in FPGA hard board processors there is a need that FPGA should work as a standalone device without having master salve relationship or external dependency. This feasibility study is to check o ...
... allow us to fully utilize this FPGA hardware. • With the development of soft processor MicroBlaze and built in FPGA hard board processors there is a need that FPGA should work as a standalone device without having master salve relationship or external dependency. This feasibility study is to check o ...
introduction
... while at the same time the other program can continue generating more output, oblivious to the fact that the output is not really going to the printer (yet). When a computer (or network) has multiple users, the need for managing and protecting the memory, I/O devices, and other resources is even gre ...
... while at the same time the other program can continue generating more output, oblivious to the fact that the output is not really going to the printer (yet). When a computer (or network) has multiple users, the need for managing and protecting the memory, I/O devices, and other resources is even gre ...
Single Address Space Operating Systems
... vary and are determined by the logical structures they are associated with, e.g., process, file or record, or by the physical container that holds them, e.g., cache, RAM or disk Going to a single network-wide namespace in which object names are invariant and are determined by the unique virtual addr ...
... vary and are determined by the logical structures they are associated with, e.g., process, file or record, or by the physical container that holds them, e.g., cache, RAM or disk Going to a single network-wide namespace in which object names are invariant and are determined by the unique virtual addr ...
Ch01 - Min-Shiang Hwang
... All data in memory before and after processing All instructions in memory in order to execute Memory management determines what is in memory when ...
... All data in memory before and after processing All instructions in memory in order to execute Memory management determines what is in memory when ...
What is an Operating System?
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
Windows Server 2008
... device special files (contain information about I/O devices) • Three types of device special files: – Block special files – used to manage random access devices that involve handling blocks of data (hard drives, DVD/CD-ROM drives) – Character special files – handle byte-by-byte streams of data (USB ...
... device special files (contain information about I/O devices) • Three types of device special files: – Block special files – used to manage random access devices that involve handling blocks of data (hard drives, DVD/CD-ROM drives) – Character special files – handle byte-by-byte streams of data (USB ...
Lecture 16: Threads
... references and operations ♦ Unsatisfied memory reference changes thread ♦ Separate registers for each thread ...
... references and operations ♦ Unsatisfied memory reference changes thread ♦ Separate registers for each thread ...
Introduction - McMaster Computing and Software
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
... Storage Definitions and Notation Review The basic unit of computer storage is the bit. A bit can contain one of two values, 0 and 1. All other storage in a computer is based on collections of bits. Given enough bits, it is amazing how many things a computer can represent: numbers, letters, images, ...
THE USER VIEW OF OPERATING SYSTEMS
... As for the interface, we are more interested in the concepts of a user interface than in the specific commands, syntax, appearance, and usage of a particular interface. You will understand that different design approaches to the interface meet different goals and achieve different ends and are often ...
... As for the interface, we are more interested in the concepts of a user interface than in the specific commands, syntax, appearance, and usage of a particular interface. You will understand that different design approaches to the interface meet different goals and achieve different ends and are often ...
slides-13
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
... Kernel keeps state info for I/O components, including open file tables, network connections, character device state ...
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[slides] Introduction to operating systems
... Wait instruction idles the CPU until the next interrupt Wait loop (contention for memory access) At most one I/O request is outstanding at a time, no simultaneous I/O processing Non-blocking call: After I/O starts, control returns to user program without waiting for I/O completion System c ...
... Wait instruction idles the CPU until the next interrupt Wait loop (contention for memory access) At most one I/O request is outstanding at a time, no simultaneous I/O processing Non-blocking call: After I/O starts, control returns to user program without waiting for I/O completion System c ...
CS 519: Operating System Theory
... von Neumann Machine The first computers (late 40’s) were calculators The advance was the idea of storing the instructions (coded as numbers) along with the data in the same memory ...
... von Neumann Machine The first computers (late 40’s) were calculators The advance was the idea of storing the instructions (coded as numbers) along with the data in the same memory ...
CS 519: Operating System Theory
... von Neumann Machine The first computers (late 40’s) were calculators The advance was the idea of storing the instructions (coded as numbers) along with the data in the same memory ...
... von Neumann Machine The first computers (late 40’s) were calculators The advance was the idea of storing the instructions (coded as numbers) along with the data in the same memory ...
Monday, 26 November, 2007.
... Timesharing (multitasking): CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process (a key abstraction!) If several jobs ready to ...
... Timesharing (multitasking): CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each user has at least one program executing in memory process (a key abstraction!) If several jobs ready to ...