Computer program: Difference between revisions

Revision as of 16:19, 5 June 2025

Revision as of 08:13, 7 June 2025

Line 2,069:

|year=2010

|isbn=978-1-59327-220-3

|page=22}}</ref> which is also known as a [[context switch]]. The kernel creates a [[process control block]] when a ''computer program'' is [[Loader (computing)|selected for execution]]. However, an executing program gets exclusive access to the [[central processing unit]] only for a [[Preemption Preemption_(computing)#time sliceTime_slice|time slice]]. To provide each user with the [[Time-sharing|appearance of continuous access]], the kernel quickly [[Preemption (computing)|preempts]] each process control block to execute another one. The goal for [[Systems programming|system developers]] is to minimize [[dispatch latency]].

[[File:Virtual memory.svg|thumb|250px|Physical memory is scattered around RAM and the hard disk. Virtual memory is one continuous block.]]

* The kernel program should perform [[memory management]].