Struct rsdb::PageCache

pub struct PageCache<L: Log, M> where
    M: Materializer + Sized,
    L: Log + Sized,  { /* fields omitted */ }

A lock-free pagecache.

Methods

impl<M> PageCache<LockFreeLog, M> where
    M: Materializer,
    M::PartialPage: Clone, 

fn new(pm: M, config: Config) -> PageCache<LockFreeLog, M>

Instantiate a new PageCache.

fn config(&self) -> Config

Return the configuration used by the underlying system.

fn recover(&mut self, from: u64) -> Option<M::Recovery>

Read updates from the log, apply them to our pagecache.

fn allocate(&self) -> (usize, *const Node<*const M::PartialPage>)

Create a new page, trying to reuse old freed pages if possible to maximize underlying Radix pointer density.

fn free(&self, pid: usize)

Free a particular page.

fn get(
    &self,
    pid: usize
) -> Option<(M::MaterializedPage, *const Node<*const M::PartialPage>)>

Try to retrieve a page by its logical ID.

fn append(
    &self,
    pid: usize,
    old: *const Node<*const M::PartialPage>,
    new: M::PartialPage
) -> Result<*const Node<*const M::PartialPage>, *const Node<*const M::PartialPage>>

Try to atomically append a Materializer::PartialPage to the page.

Trait Implementations

impl<L: Log, M: Materializer> Send for PageCache<L, M>

impl<L: Log, M: Materializer> Sync for PageCache<L, M>

impl<L: Log, M: Materializer> Debug for PageCache<L, M>

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

Formats the value using the given formatter.