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Changes tries build cache (#2933)

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* changes tries build cache

added CT build cache test

* fix lines width

* fixed some grumbles

* clear cache when: digests disabled, top-level or skewed digest is built

* cached_changed_keys -> with_cached_changed_keys
This commit is contained in:
Svyatoslav Nikolsky
2019-09-05 08:27:04 +03:00
committed by GitHub
parent 932e51ffff
commit 551a9e6bcb
16 changed files with 620 additions and 66 deletions
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substrate/core/state-machine/src/ext.rs
+8 -5
View File
@@ -19,7 +19,10 @@
use std::{error, fmt, cmp::Ord};
use log::warn;
use crate::backend::Backend;
use crate::changes_trie::{Storage as ChangesTrieStorage, build_changes_trie};
use crate::changes_trie::{
Storage as ChangesTrieStorage, CacheAction as ChangesTrieCacheAction,
build_changes_trie,
};
use crate::{Externalities, OverlayedChanges, ChildStorageKey};
use hash_db::Hasher;
use primitives::{offchain, storage::well_known_keys::is_child_storage_key, traits::BareCryptoStorePtr};
@@ -78,7 +81,7 @@ where
/// This differs from `storage_transaction` behavior, because the moment when
/// `storage_changes_root` is called matters + we need to remember additional
/// data at this moment (block number).
changes_trie_transaction: Option<(MemoryDB<H>, H::Out)>,
changes_trie_transaction: Option<(MemoryDB<H>, H::Out, ChangesTrieCacheAction<H::Out, N>)>,
/// Additional externalities for offchain workers.
///
/// If None, some methods from the trait might not be supported.
@@ -119,14 +122,14 @@ where
}
/// Get the transaction necessary to update the backend.
pub fn transaction(mut self) -> ((B::Transaction, H::Out), Option<MemoryDB<H>>) {
pub fn transaction(mut self) -> ((B::Transaction, H::Out), Option<crate::ChangesTrieTransaction<H, N>>) {
let _ = self.storage_root();
let (storage_transaction, changes_trie_transaction) = (
self.storage_transaction
.expect("storage_transaction always set after calling storage root; qed"),
self.changes_trie_transaction
.map(|(tx, _)| tx),
.map(|(tx, _, cache)| (tx, cache)),
);
(
@@ -355,7 +358,7 @@ where
self.overlay,
parent_hash,
)?;
Ok(self.changes_trie_transaction.as_ref().map(|(_, root)| root.clone()))
Ok(self.changes_trie_transaction.as_ref().map(|(_, root, _)| root.clone()))
}
fn offchain(&mut self) -> Option<&mut dyn offchain::Externalities> {