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https://github.com/ethereum/go-ethereum.git
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6485d5e3ff
This pull request removes the destruct flag from the state snapshot to simplify the code. Previously, this flag indicated that an account was removed during a state transition, making all associated storage slots inaccessible. Because storage deletion can involve a large number of slots, the actual deletion is deferred until the end of the process, where it is handled in batches. With the deprecation of self-destruct in the Cancun fork, storage deletions are no longer expected. Historically, the largest storage deletion event in Ethereum was around 15 megabytes—manageable in memory. In this pull request, the single destruct flag is replaced by a set of deletion markers for individual storage slots. Each deleted storage slot will now appear in the Storage set with a nil value. This change will simplify a lot logics, such as storage accessing, storage flushing, storage iteration and so on.
49 lines
2.1 KiB
Go
49 lines
2.1 KiB
Go
// Copyright 2023 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>
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package triedb
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/triedb/pathdb"
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)
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// StateSet represents a collection of mutated states during a state transition.
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type StateSet struct {
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Accounts map[common.Hash][]byte // Mutated accounts in 'slim RLP' encoding
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AccountsOrigin map[common.Address][]byte // Original values of mutated accounts in 'slim RLP' encoding
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Storages map[common.Hash]map[common.Hash][]byte // Mutated storage slots in 'prefix-zero-trimmed' RLP format
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StoragesOrigin map[common.Address]map[common.Hash][]byte // Original values of mutated storage slots in 'prefix-zero-trimmed' RLP format
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}
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// NewStateSet initializes an empty state set.
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func NewStateSet() *StateSet {
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return &StateSet{
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Accounts: make(map[common.Hash][]byte),
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AccountsOrigin: make(map[common.Address][]byte),
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Storages: make(map[common.Hash]map[common.Hash][]byte),
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StoragesOrigin: make(map[common.Address]map[common.Hash][]byte),
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}
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}
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// internal returns a state set for path database internal usage.
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func (set *StateSet) internal() *pathdb.StateSetWithOrigin {
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// the nil state set is possible in tests.
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if set == nil {
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return nil
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}
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return pathdb.NewStateSetWithOrigin(set.AccountsOrigin, set.StoragesOrigin)
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}
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