Struct WalEntryHeader 

#[repr(C)]
pub struct WalEntryHeader {
    pub txn_id: u64,
    pub lsn: u64,
    pub timestamp: u64,
    pub entry_type: u8,
    pub field_count: u8,
    pub _reserved: [u8; 6],
}

Fixed-size WAL entry header (32 bytes)

Fields

txn_id: u64

Transaction ID

lsn: u64

Log sequence number

timestamp: u64

Timestamp (nanoseconds since epoch)

entry_type: u8

Entry type

field_count: u8

Number of variable-length fields

_reserved: [u8; 6]

Reserved for alignment

Implementations

impl WalEntryHeader

pub fn new( txn_id: u64, lsn: u64, entry_type: WalEntryType, field_count: u8, ) -> Self

pub fn write_to(&self, buf: &mut [u8])

Write to buffer

pub fn read_from(buf: &[u8]) -> Option<&Self>

Read from buffer (zero-copy)

pub fn read_from_copy(buf: &[u8]) -> Option<Self>

Read from buffer (safe copy version for unaligned data)

Trait Implementations

impl Clone for WalEntryHeader

fn clone(&self) -> WalEntryHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WalEntryHeader

impl Debug for WalEntryHeader

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

Formats the value using the given formatter.