core/state: remove account reset operation v2 (ethereum#29520)

* core/state, tests: remove account reset operation

* core/state, core/vm: implement createcontract journal event

* core/state: make createcontract not emit dirtied account, unskip tests

* core/state: add createcontract to journal fuzzing

* core/state: fix journal

* core/state: address comments

* core/state: remove useless code

---------

Co-authored-by: Gary Rong <[email protected]>

Author: 2 people

core/state/journal.go

@@ -17,6 +17,8 @@
 package state
 
 import (
+	"maps"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/holiman/uint256"
 )
@@ -29,6 +31,9 @@ type journalEntry interface {
 
 	// dirtied returns the Ethereum address modified by this journal entry.
 	dirtied() *common.Address
+
+	// copy returns a deep-copied journal entry.
+	copy() journalEntry
 }
 
 // journal contains the list of state modifications applied since the last state
@@ -83,22 +88,31 @@ func (j *journal) length() int {
 	return len(j.entries)
 }
 
+// copy returns a deep-copied journal.
+func (j *journal) copy() *journal {
+	entries := make([]journalEntry, 0, j.length())
+	for i := 0; i < j.length(); i++ {
+		entries = append(entries, j.entries[i].copy())
+	}
+	return &journal{
+		entries: entries,
+		dirties: maps.Clone(j.dirties),
+	}
+}
+
 type (
 	// Changes to the account trie.
 	createObjectChange struct {
 		account *common.Address
 	}
-	resetObjectChange struct {
-		account      *common.Address
-		prev         *stateObject
-		prevdestruct bool
-		prevAccount  []byte
-		prevStorage  map[common.Hash][]byte
 
-		prevAccountOriginExist bool
-		prevAccountOrigin      []byte
-		prevStorageOrigin      map[common.Hash][]byte
+	// createContractChange represents an account becoming a contract-account.
+	// This event happens prior to executing initcode. The journal-event simply
+	// manages the created-flag, in order to allow same-tx destruction.
+	createContractChange struct {
+		account common.Address
 	}
+
 	selfDestructChange struct {
 		account     *common.Address
 		prev        bool // whether account had already self-destructed
@@ -136,6 +150,7 @@ type (
 	touchChange struct {
 		account *common.Address
 	}
+
 	// Changes to the access list
 	accessListAddAccountChange struct {
 		address *common.Address
@@ -145,6 +160,7 @@ type (
 		slot    *common.Hash
 	}
 
+	// Changes to transient storage
 	transientStorageChange struct {
 		account       *common.Address
 		key, prevalue common.Hash
@@ -153,34 +169,30 @@ type (
 
 func (ch createObjectChange) revert(s *StateDB) {
 	delete(s.stateObjects, *ch.account)
-	delete(s.stateObjectsDirty, *ch.account)
 }
 
 func (ch createObjectChange) dirtied() *common.Address {
 	return ch.account
 }
 
-func (ch resetObjectChange) revert(s *StateDB) {
-	s.setStateObject(ch.prev)
-	if !ch.prevdestruct {
-		delete(s.stateObjectsDestruct, ch.prev.address)
-	}
-	if ch.prevAccount != nil {
-		s.accounts[ch.prev.addrHash] = ch.prevAccount
-	}
-	if ch.prevStorage != nil {
-		s.storages[ch.prev.addrHash] = ch.prevStorage
-	}
-	if ch.prevAccountOriginExist {
-		s.accountsOrigin[ch.prev.address] = ch.prevAccountOrigin
-	}
-	if ch.prevStorageOrigin != nil {
-		s.storagesOrigin[ch.prev.address] = ch.prevStorageOrigin
+func (ch createObjectChange) copy() journalEntry {
+	return createObjectChange{
+		account: ch.account,
 	}
 }
 
-func (ch resetObjectChange) dirtied() *common.Address {
-	return ch.account
+func (ch createContractChange) revert(s *StateDB) {
+	s.getStateObject(ch.account).newContract = false
+}
+
+func (ch createContractChange) dirtied() *common.Address {
+	return nil
+}
+
+func (ch createContractChange) copy() journalEntry {
+	return createContractChange{
+		account: ch.account,
+	}
 }
 
 func (ch selfDestructChange) revert(s *StateDB) {
@@ -195,6 +207,14 @@ func (ch selfDestructChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch selfDestructChange) copy() journalEntry {
+	return selfDestructChange{
+		account:     ch.account,
+		prev:        ch.prev,
+		prevbalance: new(uint256.Int).Set(ch.prevbalance),
+	}
+}
+
 var ripemd = common.HexToAddress("0000000000000000000000000000000000000003")
 
 func (ch touchChange) revert(s *StateDB) {
@@ -204,6 +224,12 @@ func (ch touchChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch touchChange) copy() journalEntry {
+	return touchChange{
+		account: ch.account,
+	}
+}
+
 func (ch balanceChange) revert(s *StateDB) {
 	s.getStateObject(*ch.account).setBalance(ch.prev)
 }
@@ -212,6 +238,13 @@ func (ch balanceChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch balanceChange) copy() journalEntry {
+	return balanceChange{
+		account: ch.account,
+		prev:    new(uint256.Int).Set(ch.prev),
+	}
+}
+
 func (ch nonceChange) revert(s *StateDB) {
 	s.getStateObject(*ch.account).setNonce(ch.prev)
 }
@@ -220,6 +253,13 @@ func (ch nonceChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch nonceChange) copy() journalEntry {
+	return nonceChange{
+		account: ch.account,
+		prev:    ch.prev,
+	}
+}
+
 func (ch codeChange) revert(s *StateDB) {
 	s.getStateObject(*ch.account).setCode(common.BytesToHash(ch.prevhash), ch.prevcode)
 }
@@ -228,6 +268,14 @@ func (ch codeChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch codeChange) copy() journalEntry {
+	return codeChange{
+		account:  ch.account,
+		prevhash: common.CopyBytes(ch.prevhash),
+		prevcode: common.CopyBytes(ch.prevcode),
+	}
+}
+
 func (ch storageChange) revert(s *StateDB) {
 	s.getStateObject(*ch.account).setState(ch.key, ch.prevalue)
 }
@@ -236,6 +284,14 @@ func (ch storageChange) dirtied() *common.Address {
 	return ch.account
 }
 
+func (ch storageChange) copy() journalEntry {
+	return storageChange{
+		account:  ch.account,
+		key:      ch.key,
+		prevalue: ch.prevalue,
+	}
+}
+
 func (ch transientStorageChange) revert(s *StateDB) {
 	s.setTransientState(*ch.account, ch.key, ch.prevalue)
 }
@@ -244,6 +300,14 @@ func (ch transientStorageChange) dirtied() *common.Address {
 	return nil
 }
 
+func (ch transientStorageChange) copy() journalEntry {
+	return transientStorageChange{
+		account:  ch.account,
+		key:      ch.key,
+		prevalue: ch.prevalue,
+	}
+}
+
 func (ch refundChange) revert(s *StateDB) {
 	s.refund = ch.prev
 }
@@ -252,6 +316,12 @@ func (ch refundChange) dirtied() *common.Address {
 	return nil
 }
 
+func (ch refundChange) copy() journalEntry {
+	return refundChange{
+		prev: ch.prev,
+	}
+}
+
 func (ch addLogChange) revert(s *StateDB) {
 	logs := s.logs[ch.txhash]
 	if len(logs) == 1 {
@@ -266,6 +336,12 @@ func (ch addLogChange) dirtied() *common.Address {
 	return nil
 }
 
+func (ch addLogChange) copy() journalEntry {
+	return addLogChange{
+		txhash: ch.txhash,
+	}
+}
+
 func (ch addPreimageChange) revert(s *StateDB) {
 	delete(s.preimages, ch.hash)
 }
@@ -274,6 +350,12 @@ func (ch addPreimageChange) dirtied() *common.Address {
 	return nil
 }
 
+func (ch addPreimageChange) copy() journalEntry {
+	return addPreimageChange{
+		hash: ch.hash,
+	}
+}
+
 func (ch accessListAddAccountChange) revert(s *StateDB) {
 	/*
 		One important invariant here, is that whenever a (addr, slot) is added, if the
@@ -291,10 +373,23 @@ func (ch accessListAddAccountChange) dirtied() *common.Address {
 	return nil
 }
 
+func (ch accessListAddAccountChange) copy() journalEntry {
+	return accessListAddAccountChange{
+		address: ch.address,
+	}
+}
+
 func (ch accessListAddSlotChange) revert(s *StateDB) {
 	s.accessList.DeleteSlot(*ch.address, *ch.slot)
 }
 
 func (ch accessListAddSlotChange) dirtied() *common.Address {
 	return nil
 }
+
+func (ch accessListAddSlotChange) copy() journalEntry {
+	return accessListAddSlotChange{
+		address: ch.address,
+		slot:    ch.slot,
+	}
+}