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Don't clone values when calculating storage root (#6108)

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* Don't clone values when calculating storage root

Instead of cloning all the keys and values of the overlay when
calculating the storage root, we pass all the values by reference. This
should probably bring some performance improvements when calculating the
storage root.

* no cow version (#6113)

Co-authored-by: cheme <emericchevalier.pro@gmail.com>
This commit is contained in:
Bastian Köcherandcheme authored and GitHub committed 2020-05-23 11:28:34 +02:00
1 parent 40f3c7348e
commit 82a832bc3a
12 files changed
+165 -187
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substrate/client/api/src/in_mem.rs
+10 -7
View File
@@ -21,9 +21,8 @@
use std::collections::HashMap;
use std::sync::Arc;
use parking_lot::RwLock;
use sp_core::storage::well_known_keys;
use sp_core::offchain::storage::{
InMemOffchainStorage as OffchainStorage
use sp_core::{
storage::well_known_keys, offchain::storage::InMemOffchainStorage as OffchainStorage,
};
use sp_runtime::generic::BlockId;
use sp_runtime::traits::{Block as BlockT, Header as HeaderT, Zero, NumberFor, HashFor};
@@ -519,13 +518,17 @@ impl<Block: BlockT> backend::BlockImportOperation<Block> for BlockImportOperatio
fn reset_storage(&mut self, storage: Storage) -> sp_blockchain::Result<Block::Hash> {
check_genesis_storage(&storage)?;
let child_delta = storage.children_default.into_iter()
let child_delta = storage.children_default.iter()
.map(|(_storage_key, child_content)|
(child_content.child_info, child_content.data.into_iter().map(|(k, v)| (k, Some(v)))));
(
&child_content.child_info,
child_content.data.iter().map(|(k, v)| (k.as_ref(), Some(v.as_ref())))
)
);
let (root, transaction) = self.old_state.full_storage_root(
storage.top.into_iter().map(|(k, v)| (k, Some(v))),
child_delta
storage.top.iter().map(|(k, v)| (k.as_ref(), Some(v.as_ref()))),
child_delta,
);
self.new_state = Some(transaction);