Struct WalHeader 

pub struct WalHeader {
    pub salt: u32,
    pub checkpoint_seq: u32,
    pub clock_high_water: u64,
}

Parsed WAL header. page_size is redundant with the engine’s compile- time constant; we persist it for forward-compat and reject anything that doesn’t match at open time.

Fields

salt: u32

checkpoint_seq: u32

clock_high_water: u64

Phase 11.2 — the last MVCC logical-clock value persisted to this WAL. Rewritten by truncate (= every checkpoint) so a reopen-then-tick can never reuse a timestamp the previous run already handed out. Always 0 for v1 WALs (the bytes were reserved-zero before the bump); read back as 0 on any v1 file that pre-existed this build.

Trait Implementations

impl Clone for WalHeader

fn clone(&self) -> WalHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WalHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for WalHeader

fn eq(&self, other: &WalHeader) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for WalHeader

impl Eq for WalHeader

impl StructuralPartialEq for WalHeader