Crate yring 

Bounded SPSC ring with ypipe-style batched flush/prefetch.

Three pointers:

• head: consumer read position (AtomicUsize, consumer-owned)
• tail: writer position (plain usize, producer-only, no atomic)
• flush: last flushed position (AtomicUsize, producer writes, consumer reads)

push writes to the ring with zero atomics. flush makes all pending writes visible with one Release store. pop reads with zero atomics. prefetch loads all flushed items with one Acquire load. Result: 1 atomic per batch on each side.

Structs

AsyncConsumer

Async receiving half. Implements Stream.

AsyncProducer

Async sending half. Wakes the consumer on flush when the ring was empty.

Consumer

Receiving half. Send but not Sync.

Producer

Sending half. Send but not Sync.

Enums

FlushResult

Result of a flush operation.

Functions

async_spsc

Create an async bounded SPSC ring with the given capacity (rounded up to next power of two).

spsc

Create a bounded SPSC ring with the given capacity (rounded up to next power of two).