Struct UndoLog 

pub struct UndoLog { /* private fields */ }

Append-only undo log. Entries are never modified, only appended. Old entries are reclaimed by advancing the purge watermark.

Implementations

impl UndoLog

pub fn new() -> Self

pub fn push(&mut self, tx_id: u64, data: &[u8]) -> UndoPtr

pub fn push_with_prev( &mut self, tx_id: u64, data: &[u8], prev: Option<UndoPtr>, ) -> UndoPtr

pub fn get(&self, ptr: UndoPtr) -> Option<&UndoEntry>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Default for UndoLog

fn default() -> Self

Returns the “default value” for a type.