Struct PageMut 

pub struct PageMut<'a> { /* private fields */ }

An exclusive write borrow of a pinned page. Dereferences to Page.

Methods from Deref<Target = Page>

pub fn page_size(&self) -> usize

The page size in bytes.

pub fn id(&self) -> PageId

The id stamped in the header. For a page from Page::new this is 0 until the page is written to a slot.

pub fn lsn(&self) -> Lsn

The log sequence number stamped in the header.

pub fn set_lsn(&mut self, lsn: Lsn)

Set the log sequence number. Takes effect in the checksum the next time the page is stamped (on PageFile::write_page).

pub fn payload(&self) -> &[u8]

The payload — the page bytes after the header.

pub fn payload_mut(&mut self) -> &mut [u8]

The payload, mutably.

pub fn to_checksummed_bytes(&self) -> Vec<u8>

The whole page as a checksummed byte block, ready to persist elsewhere.

The returned vector is page_size bytes with a freshly computed checksum in the header; feed it back through Page::from_bytes to recover and verify the page. The stamped id is left untouched (0 unless the page came from a file).

Trait Implementations

impl Deref for PageMut<'_>

type Target = Page

The resulting type after dereferencing.

fn deref(&self) -> &Page

Dereferences the value.

impl DerefMut for PageMut<'_>

fn deref_mut(&mut self) -> &mut Page

Mutably dereferences the value.