Process (computing): Difference between revisions

Revision as of 06:36, 27 February 2021

Revision as of 10:24, 28 February 2021

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{{short description|Particular execution of a computer program}}

[[File:ProcessProgram vs. ProgramProcess vs. Thread.jpg|thumb|[[Computer program|Program]] vs. [[Process (computing)|Process]] vs. [[Thread (computing)|Thread]] <br/>[[Scheduling (computing)|Scheduling]], [[Preemption (computing)|Preemption]], [[Context switch|Context Switching]]|400x400px|link=Special:FilePath/Process_vs_Program_vs_Thread.jpg]]

[[Scheduling (computing)|Scheduling]], [[Preemption (computing)|Preemption]], [[Context switch|Context Switching]]|400x400px]]

In [[computing]], a '''process''' is the [[Instance (computer science)|instance]] of a [[computer program]] that is being executed by one or many [[Thread (computing)|threads]]. It contains the program code and its activity. Depending on the [[operating system]] (OS), a process may be made up of multiple threads of execution that execute instructions [[Concurrency (computer science)|concurrently]].<ref name="OSC Chap4">{{cite book |last1=Silberschatz |first1=Abraham |author-link=Abraham Silberschatz |last2=Cagne |first2=Greg |last3=Galvin |first3=Peter Baer |date=2004 |title=Operating system concepts with Java |edition=Sixth |chapter=Chapter 4. Processes |publisher=[[John Wiley & Sons]] |isbn=0-471-48905-0}}</ref><ref name="Vah96">{{cite book |last=Vahalia |first=Uresh |date=1996 |title=UNIX Internals: The New Frontiers |chapter=Chapter 2. The Process and the Kernel |publisher=Prentice-Hall Inc. |isbn=0-13-101908-2 |url-access=registration |url=https://archive.org/details/unixinternalsnew00vaha }}</ref>