Struct UndoPageHeader 

pub struct UndoPageHeader {
    pub page_type: UndoPageType,
    pub start: u16,
    pub free: u16,
}

Parsed undo log page header.

Fields

page_type: UndoPageType

Type of undo log (INSERT or UPDATE).

start: u16

Offset of the start of undo log records on this page.

free: u16

Offset of the first free byte on this page.

Implementations

impl UndoPageHeader

pub fn parse(page_data: &[u8]) -> Option<Self>

Parse an undo page header from a full page buffer.

The undo page header starts at FIL_PAGE_DATA (byte 38).

Trait Implementations

impl Clone for UndoPageHeader

fn clone(&self) -> UndoPageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UndoPageHeader

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

Formats the value using the given formatter.

impl Serialize for UndoPageHeader

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.