std currently has an MPSC queue, but the underlying implementation is MPMC, so it'd make sense to expose an MPMC queue as well. @rust-lang/libs-api has approved the general idea of exposing an MPMC queue.
The next step is to sketch the concrete API that would be added; some of the open questions are mentioned here. An ACP should then be filed for that API.
std currently has an MPSC queue, but the underlying implementation is MPMC, so it'd make sense to expose an MPMC queue as well. @rust-lang/libs-api has approved the general idea of exposing an MPMC queue.
The next step is to sketch the concrete API that would be added; some of the open questions are mentioned here. An ACP should then be filed for that API.