std::sync::atomic::fence

Function std::sync::atomic::fence

pub fn fence(order: Ordering)

An atomic fence.

A fence 'A' which has Release ordering semantics, synchronizes with a fence 'B' with (at least) Acquire semantics, if and only if there exists atomic operations X and Y, both operating on some atomic object 'M' such that A is sequenced before X, Y is synchronized before B and Y observes the change to M. This provides a happens-before dependence between A and B.

Atomic operations with Release or Acquire semantics can also synchronize with a fence.

A fence which has SeqCst ordering, in addition to having both Acquire and Release semantics, participates in the global program order of the other SeqCst operations and/or fences.

Accepts Acquire, Release, AcqRel and SeqCst orderings.

Panics

Panics if order is Relaxed.