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Frame remove_all with size limit. (#9106)

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* remove prefixed content with limit.

* test match

* factor comment and factor ext limit removal.

* fix benchmark

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
cheme
2021-06-15 15:23:58 +02:00
committed by GitHub
parent 5f0257f3b3
commit 693b39f43b
36 changed files with 312 additions and 239 deletions
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substrate/primitives/trie/src/lib.rs
-29
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@@ -279,35 +279,6 @@ pub fn child_delta_trie_root<L: TrieConfiguration, I, A, B, DB, RD, V>(
)
}
/// Call `f` for all keys in a child trie.
/// Aborts as soon as `f` returns false.
pub fn for_keys_in_child_trie<L: TrieConfiguration, F: FnMut(&[u8]) -> bool, DB>(
keyspace: &[u8],
db: &DB,
root_slice: &[u8],
mut f: F
) -> Result<(), Box<TrieError<L>>>
where
DB: hash_db::HashDBRef<L::Hash, trie_db::DBValue>
{
let mut root = TrieHash::<L>::default();
// root is fetched from DB, not writable by runtime, so it's always valid.
root.as_mut().copy_from_slice(root_slice);
let db = KeySpacedDB::new(&*db, keyspace);
let trie = TrieDB::<L>::new(&db, &root)?;
let iter = trie.iter()?;
for x in iter {
let (key, _) = x?;
if !f(&key) {
break;
}
}
Ok(())
}
/// Record all keys for a given root.
pub fn record_all_keys<L: TrieConfiguration, DB>(
db: &DB,