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sp_trie::cache

Struct TrieCache

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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.

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

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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§

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

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

Get the [NodeOwned] that corresponds to the given hash.
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fn lookup_value_for_key(&mut self, key: &[u8]) -> Option<&CachedValue<H::Out>>

Lookup value for the given key. Read more
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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§

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

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

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

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

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

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

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impl<T> Any for T
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