pub struct LocalTrieCache<H: Hasher> { /* private fields */ }
Expand description

The local trie cache.

This cache should be used per state instance created by the backend. One state instance is referring to the state of one block. It will cache all the accesses that are done to the state which could not be fullfilled by the SharedTrieCache. These locally cached items are merged back to the shared trie cache when this instance is dropped.

When using Self::as_trie_db_cache or Self::as_trie_db_mut_cache, it will lock Mutexes. So, it is important that these methods are not called multiple times, because they otherwise deadlock.

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impl<H: Hasher> LocalTrieCache<H>

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pub fn as_trie_db_cache(&self, storage_root: H::Out) -> TrieCache<'_, H>

Return self as a TrieDB compatible cache.

The given storage_root needs to be the storage root of the trie this cache is used for.

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pub fn as_trie_db_mut_cache(&self) -> TrieCache<'_, H>

Return self as TrieDBMut compatible cache.

After finishing all operations with TrieDBMut and having obtained the new storage root, TrieCache::merge_into should be called to update this local cache instance. If the function is not called, cached data is just thrown away and not propagated to the shared cache. So, accessing these new items will be slower, but nothing would break because of this.

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impl<H: Hasher> Drop for LocalTrieCache<H>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<H> !RefUnwindSafe for LocalTrieCache<H>

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impl<H> Send for LocalTrieCache<H>

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impl<H> Sync for LocalTrieCache<H>

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impl<H> Unpin for LocalTrieCache<H>where <H as Hasher>::Out: Unpin,

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impl<H> !UnwindSafe for LocalTrieCache<H>

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, Outer> IsWrappedBy<Outer> for Twhere Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

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fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

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fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

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impl<T> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> UncheckedInto<T> for Swhere T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> JsonSchemaMaybe for T