Function core::atomic::fence
[−]
[src]
pub fn fence(order: Ordering)
An atomic fence.
A fence 'A' which has Release`Releaseordering semantics, synchronizes with a fence 'B' with (at least)` ordering semantics, synchronizes with a
fence 'B' with (at least) Acquire`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`Releaseor` or Acquire`Acquire` semantics can also synchronize
with a fence.
A fence which has SeqCst`SeqCstordering, in addition to having both` ordering, in addition to having both Acquire`Acquireand`
and Release`Releasesemantics, participates in the global program order of the other` semantics, participates in the global program order of the
other SeqCst`SeqCst` operations and/or fences.
Accepts Acquire`Acquire,`, Release`Release,`, AcqRel`AcqReland` and SeqCst`SeqCst` orderings.
Panics
Panics if order`orderis` is Relaxed`Relaxed`.