Struct LockManager 

pub struct LockManager { /* private fields */ }

The LockManager is used for cooperative access to pages in the system.

Before accessing the I/O layer you must get a read or write lock on the page you need to access. Only AFTER you have the lock you should ask for the page.

Implementations

impl LockManager

pub fn new() -> LockManager

pub async fn read( &self, page_id: PageId, offset: PageOffset, ) -> OwnedRwLockReadGuard<(PageId, PageOffset)>

pub async fn write( &self, page_id: PageId, offset: PageOffset, ) -> OwnedRwLockWriteGuard<(PageId, PageOffset)>

Trait Implementations

impl Clone for LockManager

fn clone(&self) -> LockManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for LockManager

fn default() -> Self

Returns the “default value” for a type.