Struct sp_trie::cache::TrieCache

source ·

pub struct TrieCache<'a, H: Hasher> { /* private fields */ }

Expand description

The actual TrieCache implementation.

If this instance was created for using it with a TrieDBMut, it needs to be merged back into the LocalTrieCache with Self::merge_into after all operations are done.

Implementations

source

impl<'a, H: Hasher> TrieCache<'a, H>

source

pub fn merge_into(self, local: &LocalTrieCache<H>, storage_root: H::Out)

Merge this cache into the given LocalTrieCache.

This function is only required to be called when this instance was created through LocalTrieCache::as_trie_db_mut_cache, otherwise this method is a no-op. The given storage_root is the new storage root that was obtained after finishing all operations using the TrieDBMut.

Trait Implementations

source

impl<'a, H: Hasher> TrieCache<NodeCodec<H>> for TrieCache<'a, H>

source

fn get_or_insert_node(
 &mut self,
 hash: H::Out,
 fetch_node: &mut dyn FnMut() -> Result<NodeOwned<H::Out>, H::Out, Error<H::Out>>
) -> Result<&NodeOwned<H::Out>, H::Out, Error<H::Out>>

Get or insert a NodeOwned. Read more

source

fn get_node(&mut self, hash: &H::Out) -> Option<&NodeOwned<H::Out>>

Get the NodeOwned that corresponds to the given hash.

source

fn lookup_value_for_key(&mut self, key: &[u8]) -> Option<&CachedValue<H::Out>>

Lookup value for the given key. Read more

source

fn cache_value_for_key(&mut self, key: &[u8], data: CachedValue<H::Out>)

Cache the given value for the given key. Read more

Auto Trait Implementations

impl<'a, H> !RefUnwindSafe for TrieCache<'a, H>

impl<'a, H> !Send for TrieCache<'a, H>

impl<'a, H> Sync for TrieCache<'a, H>

impl<'a, H> Unpin for TrieCache<'a, H>where
<H as Hasher>::Out: Unpin,

impl<'a, H> !UnwindSafe for TrieCache<'a, H>

Blanket Implementations

source

impl<T> Any for Twhere
T: 'static + ?Sized,

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> Downcast for Twhere
T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for Twhere
T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

source