I used Michael & Scott lock-free queue and bounded SPMC & MPMC queues in my fibers library. Queues with locks were faster though. I've also written some QSBR to

I used Michael & Scott lock-free queue and bounded SPMC & MPMC queues in my fibers library. Queues with locks were faster though. I've also written some QSBR to reclaim sockets registered in epoll/kqueue without a need to wrap concurrent epoll/kqueue calls in a lock.