OPERATINGSYSTEMS 2015
... a. What is the content of need matrix? b. Is the system in SAFE state? If so, give the safe sequence. 60. With an example, illustrate Banker’s Algorithm for Dead lock avoidance. Explain briefly about the deadlock avoidance. Chapter 5: Memory Management Objective: This chapter deals with main memory ...
... a. What is the content of need matrix? b. Is the system in SAFE state? If so, give the safe sequence. 60. With an example, illustrate Banker’s Algorithm for Dead lock avoidance. Explain briefly about the deadlock avoidance. Chapter 5: Memory Management Objective: This chapter deals with main memory ...
os2-1_str
... • When executing in kernel mode, the operating system has unrestricted access to both system and user’s memory. • The load instructions for the base and limit registers are privileged instructions (the read instructions for these registers need not be privileged). • Privileged instructions can be is ...
... • When executing in kernel mode, the operating system has unrestricted access to both system and user’s memory. • The load instructions for the base and limit registers are privileged instructions (the read instructions for these registers need not be privileged). • Privileged instructions can be is ...
The Kaya OS project and the µMPS Hardware Simulator
... • OS/161[9], like Topsy, is a partial operating system designed to run on a MIPS-based hardware simulator (System/161). Students are left with six primary tasks which include rewriting the scheduler, implementing a full-featured virtual memory system and a file system. Unfortunately, System/161, lik ...
... • OS/161[9], like Topsy, is a partial operating system designed to run on a MIPS-based hardware simulator (System/161). Students are left with six primary tasks which include rewriting the scheduler, implementing a full-featured virtual memory system and a file system. Unfortunately, System/161, lik ...
threads
... Linux Threads • Linux refers to them as tasks rather than threads • Thread creation is done through clone() system call • clone() allows a child task to share the address space of the parent task (process) ...
... Linux Threads • Linux refers to them as tasks rather than threads • Thread creation is done through clone() system call • clone() allows a child task to share the address space of the parent task (process) ...
The OS 215 Project
... The first thing you need to figure out is the environment where you will be doing this project. If you’re a LINUX fan, then life is easy since gcc is installed on every computer. I would recommend that as a good way to get started. If you’ve been programming on Windows, then I’d recommend the free V ...
... The first thing you need to figure out is the environment where you will be doing this project. If you’re a LINUX fan, then life is easy since gcc is installed on every computer. I would recommend that as a good way to get started. If you’ve been programming on Windows, then I’d recommend the free V ...
ch1-v2
... System call – request to the operating system to allow user not to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to inclu ...
... System call – request to the operating system to allow user not to wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to inclu ...
Definition of Operating System
... Time sharing requires an interactive computer system which provides direct communication between the user and the system. A time shared operating system allows many users to share the computer simultaneously. It uses CPU scheduling and multi programming to provide each user with a small portion of a ...
... Time sharing requires an interactive computer system which provides direct communication between the user and the system. A time shared operating system allows many users to share the computer simultaneously. It uses CPU scheduling and multi programming to provide each user with a small portion of a ...
CSC420 สัปดาห์ที่ 2
... • Resource holding -- the act of holding a resource and not releasing it; waiting for the other job to retreat. • No preemption -- the lack of temporary reallocation of resources; once a job gets a resource it can hold on to it for as long as it needs. • Circular wait -- each process involved in imp ...
... • Resource holding -- the act of holding a resource and not releasing it; waiting for the other job to retreat. • No preemption -- the lack of temporary reallocation of resources; once a job gets a resource it can hold on to it for as long as it needs. • Circular wait -- each process involved in imp ...
Ch03 - UCF Computer Science
... Stubs – client-side proxy for the actual procedure on the server The client-side stub locates the server and marshalls the parameters The server-side stub receives this message, unpacks the marshalled ...
... Stubs – client-side proxy for the actual procedure on the server The client-side stub locates the server and marshalls the parameters The server-side stub receives this message, unpacks the marshalled ...
ppt
... Stubs – client-side proxy for the actual procedure on the server The client-side stub locates the server and marshalls the parameters The server-side stub receives this message, unpacks the marshalled ...
... Stubs – client-side proxy for the actual procedure on the server The client-side stub locates the server and marshalls the parameters The server-side stub receives this message, unpacks the marshalled ...
PDF slides
... What is the capacity of a link? Is the size of a message that the link can accommodate fixed or variable? Is a link unidirectional or bi-directional? ...
... What is the capacity of a link? Is the size of a message that the link can accommodate fixed or variable? Is a link unidirectional or bi-directional? ...
Tonight`s Agenda
... • Options & Function Keys are available to initiate tasks(dmo) • Alternate Sign-on Access is an option of the Operating System (dmo) • Navigation is typically via Menus and/or the Command Line (dmo) • Operations Navigator is a GUI Interface to the iSeries platform (see http://www.ibm.com/eserver/ise ...
... • Options & Function Keys are available to initiate tasks(dmo) • Alternate Sign-on Access is an option of the Operating System (dmo) • Navigation is typically via Menus and/or the Command Line (dmo) • Operations Navigator is a GUI Interface to the iSeries platform (see http://www.ibm.com/eserver/ise ...
pdf
... stored on the removable volume) After mount, virtually no distinction between files on permanent media or removable media ...
... stored on the removable volume) After mount, virtually no distinction between files on permanent media or removable media ...
OS_Java
... A process is a program in execution. A process needs CPU time, memory, files, and I/O devices, to accomplish its task. The operating system is responsible for Process creation and deletion (= starting and terminating a program execution) process suspension and resumption (= letting a program wai ...
... A process is a program in execution. A process needs CPU time, memory, files, and I/O devices, to accomplish its task. The operating system is responsible for Process creation and deletion (= starting and terminating a program execution) process suspension and resumption (= letting a program wai ...
Disco: Running Commodity Operating Systems on Scalable
... But here’s a dumb thing: A VM has a copy of information it wants to send to another VM on the same physical machine. In a naïve approach, we’d let that data be duplicated, taking up extra memory pointlessly. So, let’s use copy-on-write for our network interface too! ...
... But here’s a dumb thing: A VM has a copy of information it wants to send to another VM on the same physical machine. In a naïve approach, we’d let that data be duplicated, taking up extra memory pointlessly. So, let’s use copy-on-write for our network interface too! ...
Introduction
... machine, running on a multicomputer, for which applications can be written using the shared memory model even though this is not present. • A pagebased distributed shared memory (DSM) is to use the virtual memory capabilities of each individual node to support a large virtual address space. • Having ...
... machine, running on a multicomputer, for which applications can be written using the shared memory model even though this is not present. • A pagebased distributed shared memory (DSM) is to use the virtual memory capabilities of each individual node to support a large virtual address space. • Having ...
Ceng 334 - Operating Systems
... Creating a socket returns a file descriptor, which is needed for establishing a connection, reading data, writing data, and releasing the connection One party makes a listen call on a local socket, which creates a buffer and blocks until data arrive The other party makes a connect call giving as par ...
... Creating a socket returns a file descriptor, which is needed for establishing a connection, reading data, writing data, and releasing the connection One party makes a listen call on a local socket, which creates a buffer and blocks until data arrive The other party makes a connect call giving as par ...
Chap 01 - Introduction
... System call – request to the operating system to allow user to wait for I/O completion. Device-status table contains entry for each I/O device indicating its type, address, and state. Operating system indexes into I/O device table to determine device status and to modify table entry to include ...
... System call – request to the operating system to allow user to wait for I/O completion. Device-status table contains entry for each I/O device indicating its type, address, and state. Operating system indexes into I/O device table to determine device status and to modify table entry to include ...
Why Threads? - WordPress.com
... threads are cheap to create. • Threads use very little resources of an operating system in which they are working - threads do not need new address space, global data, program code or operating system resources. • Context switching are fast when working with threads. The reason is that we only have ...
... threads are cheap to create. • Threads use very little resources of an operating system in which they are working - threads do not need new address space, global data, program code or operating system resources. • Context switching are fast when working with threads. The reason is that we only have ...
ch3
... using the wait()system call. The call returns status information and the pid of the terminated process pid = wait(&status); If no parent waiting (did not invoke wait()) process is a zombie If parent terminated without invoking wait , process is an orphan ...
... using the wait()system call. The call returns status information and the pid of the terminated process pid = wait(&status); If no parent waiting (did not invoke wait()) process is a zombie If parent terminated without invoking wait , process is an orphan ...
ch3
... using the wait()system call. The call returns status information and the pid of the terminated process pid = wait(&status); If no parent waiting (did not invoke wait()) process is a zombie If parent terminated without invoking wait , process is an orphan ...
... using the wait()system call. The call returns status information and the pid of the terminated process pid = wait(&status); If no parent waiting (did not invoke wait()) process is a zombie If parent terminated without invoking wait , process is an orphan ...
Chapter 1: Introduction
... System call – request to the operating system to allow user to wait for I/O completion. Device-status table contains entry for each I/O device indicating its type, address, and state. Operating system indexes into I/O device table to determine device status and to modify table entry to include ...
... System call – request to the operating system to allow user to wait for I/O completion. Device-status table contains entry for each I/O device indicating its type, address, and state. Operating system indexes into I/O device table to determine device status and to modify table entry to include ...
What is an Operating System?
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, ...
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, ...