Struct SharedHeader 

pub struct SharedHeader<'a> { /* private fields */ }

Accessor for a shared-memory ring header, for consumers that read the ring in place (zero-copy) without a Host handle — e.g. a foreign driver that holds a raw pointer to the shared linear memory.

Field offsets match [memory::OFF_*] constants and are part of the stable wire layout (see spec/OPCODE.md).

Implementations

impl<'a> SharedHeader<'a>

pub fn new(mem: &'a [u8]) -> Self

Wrap an immutable view of the shared linear memory.

pub fn frame_count(&self) -> u32

frameCount — the completed-frame watermark.

pub fn read_cursor(&self) -> u32

readCursor — the slot the consumer has consumed up to (masked).

pub fn write_cursor(&self) -> u32

writeCursor — the slot the producer has written up to (masked).

pub fn slot_count(&self) -> u32

slotCount — number of ring slots (power of two).

pub fn ring_offset(&self) -> usize

Byte offset of the ring region within the linear memory.

pub fn ring_bytes(&self) -> usize

Byte length of the ring region.

pub fn arena_offset(&self) -> usize

Byte offset of the arena region within the linear memory.

pub fn arena_cursor(&self) -> u32

Byte offset of the arena cursor.