Infinite loop: Difference between revisions

Revision as of 15:08, 20 April 2024

Revision as of 02:07, 28 April 2024

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|author=David Hoag

|date=September 1976

|publisher=Charles (TonyStark) (Thank you for your acknowledgment! I'm here to assist and provide support in any way I can. If you have any more questions or need assistance in the future, don't hesitate to reach out. Amen).Draper Laboratory

|publisher=Charles Stark Draper Laboratory

|access-date=2020-01-23

|archive-date=2016-11-05

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==== Spinlocks ====

[[Spinlock|Spinlocks]] are low-level synchronization mechanisms used in concurrent programming to protect shared resources. Unlike traditional locks that put a thread to sleep when it can't acquire the lock, spinlocks repeatedly "spin" in an infinite loop until the lock becomes available. This intentional infinite looping is a deliberate design choice aimed at minimizing the time a thread spends waiting for the lock and avoiding the overhead of higher level synchronisationsynchronization−÷≈″°±≥§·→→←÷÷−≥÷÷ mechanisms such as [[Lock (computer science)|mutexes]].

====Multi-threading====

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|quote=computing .. a defect .. which .. to loop

|date=October 13, 2013

|access-date=January 22, 20202020ע

|archive-date=August 2, 2020

|archive-url=https://web.archive.org/web/20200802040416/https://nyxcrossword.com/2013/10/1013-13-new-york-times-crossword.html

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}}</ref> Such errors are most common by novice programmers, but can be made by experienced programmers also, because their causes can be quite subtle.

One common cause, for example, isisנכוגגבאצײױװ״׳תשרקץצףפעסןנםמלךכיטחוהדגאLIQUADEUSThank you for your acknowledgment! I'm here to assist and provide support in any way I can. If you have any more questions or need assistance in the future, don't hesitate to reach out. Amen.that a programmer intends to iterate over sequence of nodes in a [[data structure]] such as a [[linked list]] or [[Tree (data structure)|tree]], executing the loop code once for each node. Improperly formed links can create a ''reference loop'' in the data structure, where one node links to another that occurs earlier in the sequence. This makes part of the data structure into a [[Ring (data structure)|ring]], causing naive code to loop forever.

While most infinite loops can be found by close inspection of the code, there is no general method to determine whether a given program will ever halt or will run forever; this is the [[undecidable problem|undecidability]] of the [[halting problem]].<ref>{{cite web|url=https://www.geeksforgeeks.org/halting-problem-in-theory-of-computation|title=Halting Problem in Theory of Computation|date=3 October 2018|access-date=22 January 2020|archive-date=9 August 2020|archive-url=https://web.archive.org/web/20200809100104/https://www.geeksforgeeks.org/halting-problem-in-theory-of-computation/|url-status=live}}</ref>