SE-0282 (Review #2): Interoperability with the C Atomic Operations Library

[Joe_Groff]

The core team has decided to accept this proposal, with clarifying text about the interaction with consume ordering:

@Joe_Groff

This proposal does not specify whether/how dependency chains arising from the C/C++ memory_order_consume memory ordering work in Swift. The consume ordering as specified in the C/C++ standards is not implemented in any C/C++ compiler, and we join the current version of the C++ standard in encouraging Swift programmers not to use it. We expect to tackle the problem of efficient traversal of concurrent data structures in future proposals. Meanwhile, Swift programmers can start building useful concurrency constructs using relaxed, acquire/release, and sequentially consistent memory orderings imported from C.

Thanks everyone!