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In software engineering, double-checked locking (also known as "double-checked locking optimization" [1]) is a software design pattern used to reduce the overhead of acquiring a lock by testing the locking criterion (the "lock hint") before acquiring the lock. Locking occurs only if the locking criterion check indicates that locking is required.
In software engineering, concurrency patterns are those types of design patterns that deal with the multi-threaded programming paradigm. Examples of this class of patterns include: Active object [1] [2] Balking pattern; Barrier; Double-checked locking; Guarded suspension; Leaders/followers pattern; Monitor Object; Nuclear reaction; Reactor ...
In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. It is one of the well-known "Gang of Four" design patterns , which describe how to solve recurring problems in object-oriented software. [ 1 ]
Pattern-Oriented Software Architecture is a series of software engineering books ... Strategized Locking; Thread-Safe Interface; Double-checked locking; Concurrency ...
In a software design pattern view, ... Uses double-checked locking * pattern for using in highly concurrent environments. * @param type Any allowed fruit type, ...
Double check, a chess term; check delivered by two pieces simultaneously; Double Check, a sculpture by John Seward Johnson II; Double Check, a novel in the Traces series; Double-checked locking, a software design pattern; Double check valve, a backflow prevention design
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Double-checked locking: Reduce the overhead of acquiring a lock by first testing the locking criterion (the 'lock hint') in an unsafe manner; only if that succeeds does the actual locking logic proceed. Can be unsafe when implemented in some language/hardware combinations. It can therefore sometimes be considered an anti-pattern. Yes —