atomicCas

import { atomicCas } from "destack:sync";

Atomic compare-and-swap.

Atomically compares the value at ptr with expected.
If equal, stores desired and returns [oldValue, true].
If not equal, returns [currentValue, false].

export declare function atomicCas<T>(ptr: *T, expected: T, desired: T, order: MemoryOrdering, scope: AtomicScope, memoryScope: MemoryScope, regions: MemoryRegionSet, isVolatile: boolean, isMakeAvailable: boolean, isMakeVisible: boolean): (T, boolean)
language/library/src/sync/atomic.ds:236:247