Struct RingBuf 

pub struct RingBuf<const N: usize> { /* private fields */ }

Fixed-size ring buffer.

Designed for use with PageWriter where N = 2 * PAGE_SIZE. When consumed in PAGE_SIZE-aligned chunks, peek always returns a contiguous slice (no wrap on the read side).

Implementations

impl<const N: usize> RingBuf<N>

pub fn len(&self) -> usize

Bytes available to read.

pub fn is_empty(&self) -> bool

Returns true if the buffer is empty.

pub fn push(&mut self, data: &[u8]) -> usize

Push bytes into the buffer, handling wrap-around. Returns the number of bytes actually written (short if full).

pub fn peek(&self, n: usize) -> &[u8]

Borrow up to n contiguous readable bytes without consuming.

Returns fewer than n bytes only if fewer are available. When N = 2 * PAGE_SIZE and you consume in PAGE_SIZE chunks, this always returns a contiguous slice (read side never wraps mid-page).

pub fn consume(&mut self, n: usize)

Advance the read pointer by n bytes.

Trait Implementations

impl<const N: usize> Default for RingBuf<N>

fn default() -> Self

Returns the “default value” for a type.