pezkuwichain/pezkuwi-subxt
1
0
Fork 0
mirror of https://github.com/pezkuwichain/pezkuwi-subxt.git synced 2026-04-27 15:07:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
* 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
Download Patch File Download Diff File Expand all files Collapse all files
substrate/primitives/state-machine/src/ext.rs
+28 -5
View File
@@ -411,18 +411,41 @@ where
fn kill_child_storage(
&mut self,
child_info: &ChildInfo,
) {
limit: Option<u32>,
) -> bool {
trace!(target: "state", "{:04x}: KillChild({})",
self.id,
HexDisplay::from(&child_info.storage_key()),
);
let _guard = guard();
self.mark_dirty();
self.overlay.clear_child_storage(child_info);
self.backend.for_keys_in_child_storage(child_info, |key| {
self.overlay.set_child_storage(child_info, key.to_vec(), None);
});
if let Some(limit) = limit {
let mut num_deleted: u32 = 0;
let mut all_deleted = true;
self.backend.apply_to_child_keys_while(child_info, |key| {
if num_deleted == limit {
all_deleted = false;
return false;
}
if let Some(num) = num_deleted.checked_add(1) {
num_deleted = num;
} else {
all_deleted = false;
return false;
}
self.overlay.set_child_storage(child_info, key.to_vec(), None);
true
});
all_deleted
} else {
self.backend.apply_to_child_keys_while(child_info, |key| {
self.overlay.set_child_storage(child_info, key.to_vec(), None);
true
});
true
}
}
fn clear_prefix(&mut self, prefix: &[u8]) {