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core/types: reduce alloc in hot code path

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This commit is contained in:
weixie.cui 2026-01-04 21:06:16 +08:00
parent b635e0632c
commit 6d415ae79a
1 changed files with 10 additions and 4 deletions
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14
core/types/transaction.go
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@ -317,11 +317,17 @@ func (tx *Transaction) To() *common.Address {
// Cost returns (gas * gasPrice) + (blobGas * blobGasPrice) + value.
func (tx *Transaction) Cost() *big.Int {
total := new(big.Int).Mul(tx.GasPrice(), new(big.Int).SetUint64(tx.Gas()))
if tx.Type() == BlobTxType {
total.Add(total, new(big.Int).Mul(tx.BlobGasFeeCap(), new(big.Int).SetUint64(tx.BlobGas())))
// Avoid allocating copies via tx.GasPrice()/tx.Value(); use inner values directly.
total := new(big.Int).SetUint64(tx.inner.gas())
total.Mul(total, tx.inner.gasPrice())
if blobtx, ok := tx.inner.(*BlobTx); ok {
tmp := new(big.Int).SetUint64(blobtx.blobGas())
// BlobFeeCap is uint256.Int; ToBig allocates, but blob txs are rarer and
// this still removes several other allocations compared to the old code.
tmp.Mul(tmp, blobtx.BlobFeeCap.ToBig())
total.Add(total, tmp)
}
total.Add(total, tx.Value())
total.Add(total, tx.inner.value())
return total
}