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mempool: don't create new big.Int in tryAddSendersFee() if possible

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Do a little less allocations.
This commit is contained in:
Roman Khimov 2020-09-10 15:35:19 +03:00
parent fc7ea6217d
commit 83fc38ae3a
1 changed files with 18 additions and 12 deletions
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30
pkg/core/mempool/mem_pool.go
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@ -117,25 +117,30 @@ func (mp *Pool) tryAddSendersFee(tx *transaction.Transaction, feer Feer, needChe
senderFee.feeSum = big.NewInt(0)
mp.fees[tx.Sender()] = senderFee
}
if needCheck && checkBalance(tx, senderFee) != nil {
return false
if needCheck {
newFeeSum, err := checkBalance(tx, senderFee)
if err != nil {
return false
}
senderFee.feeSum.Set(newFeeSum)
} else {
senderFee.feeSum.Add(senderFee.feeSum, big.NewInt(tx.SystemFee+tx.NetworkFee))
}
senderFee.feeSum.Add(senderFee.feeSum, big.NewInt(tx.SystemFee+tx.NetworkFee))
return true
}
// checkBalance returns nil in case when sender has enough GAS to pay for the
// transaction
func checkBalance(tx *transaction.Transaction, balance utilityBalanceAndFees) error {
// checkBalance returns new cumulative fee balance for account or an error in
// case sender doesn't have enough GAS to pay for the transaction.
func checkBalance(tx *transaction.Transaction, balance utilityBalanceAndFees) (*big.Int, error) {
txFee := big.NewInt(tx.SystemFee + tx.NetworkFee)
if balance.balance.Cmp(txFee) < 0 {
return ErrInsufficientFunds
return nil, ErrInsufficientFunds
}
needFee := txFee.Add(txFee, balance.feeSum)
if balance.balance.Cmp(needFee) < 0 {
return ErrConflict
txFee.Add(txFee, balance.feeSum)
if balance.balance.Cmp(txFee) < 0 {
return nil, ErrConflict
}
return nil
return txFee, nil
}
// Add tries to add given transaction to the Pool.
@ -299,7 +304,8 @@ func (mp *Pool) checkTxConflicts(tx *transaction.Transaction, fee Feer) error {
senderFee.balance = fee.GetUtilityTokenBalance(tx.Sender())
senderFee.feeSum = big.NewInt(0)
}
return checkBalance(tx, senderFee)
_, err := checkBalance(tx, senderFee)
return err
}
// Verify checks if a Sender of tx is able to pay for it (and all the other