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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/frame/contracts/src/storage.rs
+1 -1
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@@ -195,7 +195,7 @@ where
/// This function doesn't affect the account.
pub fn destroy_contract(address: &AccountIdOf<T>, trie_id: &TrieId) {
<ContractInfoOf<T>>::remove(address);
child::kill_storage(&crate::child_trie_info(&trie_id));
child::kill_storage(&crate::child_trie_info(&trie_id), None);
}
/// This generator uses inner counter for account id and applies the hash over `AccountId +