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Allow capping the amount of work performed when deleting a child trie (#7671)

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* Allow Backend::for_keys_in_child_storage to be aborted by the closure

* Ext::kill_child_storage now takes an upper limit for backend deletion

* Add Storage::storage_kill_limited() runtime interface

* review: Use a new version of kill_storage instead of a new interface

* review: Simplify boolean expression

Co-authored-by: cheme <emericchevalier.pro@gmail.com>

* review: Rename for_keys_in_child_storage

Co-authored-by: cheme <emericchevalier.pro@gmail.com>
This commit is contained in:
Alexander Theißen
2020-12-09 02:17:28 +01:00
committed by GitHub
parent 4689c21069
commit 9ce24fe1f4
19 changed files with 219 additions and 34 deletions
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substrate/primitives/state-machine/src/trie_backend_essence.rs
+2 -1
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@@ -190,7 +190,8 @@ impl<S: TrieBackendStorage<H>, H: Hasher> TrieBackendEssence<S, H> where H::Out:
}
/// Retrieve all entries keys of child storage and call `f` for each of those keys.
pub fn for_keys_in_child_storage<F: FnMut(&[u8])>(
/// Aborts as soon as `f` returns false.
pub fn apply_to_child_keys_while<F: FnMut(&[u8]) -> bool>(
&self,
child_info: &ChildInfo,
f: F,