Struct RingLog 

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

A fixed-capacity in-memory log sink.

This is useful when you don’t have a device early during boot, or when you want to keep the last N bytes of logs for later inspection.

Internally it uses RingBuffer, so it has overwrite-on-full semantics.

Implementations

impl<const N: usize> RingLog<N>

pub const fn new() -> Self

Creates an empty ring log.

If N == 0, all writes become no-ops and as_slices() returns empty slices.

pub fn clear(&mut self)

Clears the stored bytes.

pub fn as_slices(&self) -> (&[u8], &[u8])

Returns the current content as two slices.

Because this is a ring buffer, the data may wrap. The returned slices represent the content in logical FIFO order (slice0 then slice1).

pub fn push_byte(&mut self, b: u8)

Pushes a single byte into the ring.

This can be used by device drivers that already stream bytes.

Trait Implementations

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

fn default() -> Self

Returns the “default value” for a type.

impl<const N: usize> LogSink for RingLog<N>

fn write_str(&mut self, s: &str)

Writes a string fragment to the output device.

fn flush(&mut self)

Flushes buffered output if applicable.