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eth/protocol/snap: improve delete function

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This commit is contained in:
Gary Rong 2024-08-05 11:52:27 +08:00
parent 2c1ab5562a
commit 06fc32f520
1 changed files with 12 additions and 7 deletions
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19
eth/protocols/snap/gentrie.go
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@ -212,19 +212,24 @@ func (t *pathTrie) update(key, value []byte) error {
// delete implements genTrie interface, deleting the item from the stack trie.
func (t *pathTrie) delete(key []byte) error {
// reset the trie along with the trackers. Be aware that the last
// inserted item (potentially along with some internal trie nodes)
// will be silently discarded by trie resetting.
// Commit the trie since the right boundary is incomplete because
// of the deleted item. This will implicitly discard the last inserted
// item and clean some ancestor trie nodes of the last committed
// item in the database.
t.commit(false)
// Reset the trie and all the internal trackers
t.first = nil
t.last = nil
t.tr.Reset()
// explicitly mark the left boundary as incomplete, as the left-side
// item of the next one has been removed. Be aware that the next item
// to be inserted to will be ignored from committing as well.
// Explicitly mark the left boundary as incomplete, as the left-side
// item of the next one has been deleted. Be aware that the next item
// to be inserted will be ignored from committing as well as it's on
// the left boundary.
t.skipLeftBoundary = true
// explicitly delete the potential leftover nodes on the specific
// Explicitly delete the potential leftover nodes on the specific
// path from the database.
tkey := t.tr.TrieKey(key)
for i := 0; i <= len(tkey); i++ {