oa::Channel

oa::Channel <T > — bounded MPMC channel (multiple-producer, multiple-consumer). Bounded ring buffer with blocking send/recv and non-blocking trySend/tryRecv. Supports graceful shutdown via close() which unblocks all waiters. usage: oa::Channel <oa ::Matrix> ch(16); // capacity 16 ch.send(tensor); // blocks if full auto t = ch.recv(); // blocks if empty, returns nullopt if closed ch.close(); // unblocks all waiters