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(programming, of a variable etc.) Having its associated memory immediately updated with any changes in value.
2010, Jon Jagger, Nigel Perry, Peter Sestoft, Annotated C# Standard, page 467:
This method stores a value into a non-volatile field called result, then stores true in the volatile field finished. The main thread waits for the field finished to be set to true, then reads the field result.
(computing, of memory) Whose content is lost when the computer is powered down.
(obsolete) Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly.
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(programming) A variable that is volatile, i.e. has its associated memory immediately updated with any change in value.
2011, Victor Pankratius, Ali-Reza Adl-Tabatabai, Walter Tichy, Fundamentals of Multicore Software Development, page 74:
Operations on C++ volatiles do put the compiler on notice that the object may be modified asynchronously, and hence are generally safer to use than ordinary variable accesses.
"volatile", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)