31 Atomic operations library [atomics] (original) (raw)

Atomic waiting operationsand atomic notifying operationsprovide a mechanism to wait for the value of an atomic object to change more efficiently than can be achieved with polling.

An atomic waiting operation may block until it is unblocked by an atomic notifying operation, according to each function's effects.

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Programs are not guaranteed to observe transient atomic values, an issue known as the A-B-A problem, resulting in continued blocking if a condition is only temporarily met.

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