What is swift Atomics?

I’m delighted to announce Swift Atomics, a new open source package that enables direct use of low-level atomic operations in Swift code. The goal of this library is to enable intrepid systems programmers to start building synchronization constructs (such as concurrent data structures) directly in Swift.

Does swift support atomic values?

(Swift supports a subset of the C/C++ memory orderings.) The package implements atomic operations for the following Swift constructs, all of which conform to the public AtomicValue protocol: Of particular note is full support for atomic strong references.

Can atomic operations cause a crash in Swift 5?

Code using atomic operations is not bound to Swift exclusivity memory access, which prevents variables from begin accessed under a different name while they are being modified in a different portion of the program. When using Swift 5, a violation of the exclusive access rule will usually cause a crash, but atomic operations are handled differently.