Enum std::sync::atomic::Ordering
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[src]
pub enum Ordering { Relaxed, Release, Acquire, AcqRel, SeqCst, }
Atomic memory orderings
Memory orderings limit the ways that both the compiler and CPU may reorder instructions around atomic operations. At its most restrictive, "sequentially consistent" atomics allow neither reads nor writes to be moved either before or after the atomic operation; on the other end "relaxed" atomics allow all reorderings.
Rust's memory orderings are the same as LLVM's.
Variants
Relaxed | No ordering constraints, only atomic operations. Corresponds to LLVM's
|
Release | When coupled with a store, all previous writes become visible
to another thread that performs a load with |
Acquire | When coupled with a load, all subsequent loads will see data
written before a store with |
AcqRel | When coupled with a load, uses |
SeqCst | Like |