Specifies the memory ordering semantics of an atomic load operation.
Members (4)
get · iOS 18.0+
description
TypeScript
get description(): string
Swift declaration
var description: String { get }
A textual representation of this instance.
Calling this property directly is discouraged. Instead, convert an
instance of any type to a string by using the `String(describing:)`
initializer. This initializer works with any type, and uses the custom
`description` property for types that conform to
`CustomStringConvertible`:
struct Point: CustomStringConvertible {
let x: Int, y: Int
var description: String {
return "(\(x), \(y))"
}
}
let p = Point(x: 21, y: 30)
let s = String(describing: p)
print(s)
// Prints "(21, 30)"
The conversion of `p` to a string in the assignment to `s` uses the
`Point` type's `description` property.
get · iOS 18.0+
sequentiallyConsistent
TypeScript
static get sequentiallyConsistent(): AtomicLoadOrdering
Swift declaration
static var sequentiallyConsistent: AtomicLoadOrdering { get }
A sequentially consistent load performs an acquiring load and
also guarantees that it and all other sequentially consistent
atomic operations (loads, stores, updates) appear to be executed
in a single, total sequential ordering.
This value corresponds to `std::memory_order_seq_cst` in C++.
get · iOS 18.0+
relaxed
TypeScript
static get relaxed(): AtomicLoadOrdering
Swift declaration
static var relaxed: AtomicLoadOrdering { get }
Guarantees the atomicity of the specific operation on which it is applied,
but imposes no ordering constraints on any other variable accesses.
This value corresponds to `std::memory_order_relaxed` in C++.
get · iOS 18.0+
acquiring
TypeScript
static get acquiring(): AtomicLoadOrdering
Swift declaration
static var acquiring: AtomicLoadOrdering { get }
An acquiring load synchronizes with a releasing operation whose
value its reads. It ensures that the releasing and acquiring
threads agree that all subsequent variable accesses on the
acquiring thread happen after the atomic operation itself.
This value corresponds to `std::memory_order_acquire` in C++.
