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collecting nonceChanges and codeChanges only when the tracer is enabled #9

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merged 1 commit into from
Oct 29, 2024
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collecting nonceChanges and codeChanges only when the tracer is enabled #9

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25 changes: 14 additions & 11 deletions x/evm/statedb/statedb.go
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Original file line number Diff line number Diff line change
Expand Up @@ -547,30 +547,33 @@ func (s *StateDB) SetBalance(addr common.Address, amount *big.Int) {
func (s *StateDB) SetNonce(addr common.Address, nonce uint64) {
stateObject := s.getOrNewStateObject(addr)
if stateObject != nil {
oldNonce := s.GetNonce(addr)
stateObject.SetNonce(nonce)

// collect nonce changes only if tracer is active to reduce reads to
// StateDB
if s.evmTracer != nil && s.evmTracer.OnNonceChange != nil {
oldNonce := s.GetNonce(addr)
s.evmTracer.OnNonceChange(addr, oldNonce, nonce)
}

stateObject.SetNonce(nonce)
}
}

// SetCode sets the code of account.
func (s *StateDB) SetCode(addr common.Address, code []byte) {
stateObject := s.getOrNewStateObject(addr)
if stateObject != nil {
oldCode := s.GetCode(addr)
stateObject.SetCode(crypto.Keccak256Hash(code), code)

var oldCodeHash common.Hash
if oldCode != nil {
oldCodeHash = crypto.Keccak256Hash(oldCode)
}

// collect code changes only if tracer is active to reduce reads to
// StateDB
if s.evmTracer != nil && s.evmTracer.OnCodeChange != nil {
oldCode := s.GetCode(addr)
var oldCodeHash common.Hash
if oldCode != nil {
oldCodeHash = crypto.Keccak256Hash(oldCode)
}
s.evmTracer.OnCodeChange(addr, oldCodeHash, oldCode, crypto.Keccak256Hash(code), code)
}

stateObject.SetCode(crypto.Keccak256Hash(code), code)
}
}

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