Struct Ring 

pub struct Ring { /* private fields */ }

Writer side of the ring. Not Sync: one thread publishes.

Implementations

impl Ring

pub fn new(format: RingFormat, n_slots: u32) -> Result<Self>

Allocate and zero-initialize the memfd and write the header.

pub fn fd(&self) -> RawFd

pub fn format(&self) -> &RingFormat

pub fn n_slots(&self) -> u32

pub fn slot_size(&self) -> usize

pub fn frame_seq(&self) -> u64

pub fn latest_frame(&self) -> Option<&[u8]>

The bytes of the most recently published frame, valid until the next publish.

pub fn config_bytes(&self) -> [u8; 64]

The configuration struct handed to each interposer client once, ahead of the doorbells.

pub fn publish<F: FnOnce(&mut [u8]) -> usize>( &mut self, ts_ns: u64, fill: F, ) -> bool

Publish one frame: fill writes the frame into the next slot and returns the byte count. A fill returning 0 (or more than the slot holds) abandons the slot without publishing it.