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Move non-mempool specific functions to new file.

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Upstream commit 3d6afcffe7
This commit is contained in:
Dave Collins 2016-05-20 17:04:01 -05:00
commit 29a04bca85
2 changed files with 16 additions and 14 deletions
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5
mempool.go
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@ -68,11 +68,6 @@ const (
// (1 + 15*74 + 3) + (15*34 + 3) + 23 = 1650
maxStandardSigScriptSize = 1650
// maxStandardMultiSigKeys is the maximum number of public keys allowed
// in a multi-signature transaction output script for it to be
// considered standard.
maxStandardMultiSigKeys = 3
// defaultMinRelayTxFee is the minimum fee in atoms that is required
// for a transaction to be treated as free for relay and mining
// purposes. It is also used to help determine if a transaction is

25
policy.go
View File

@ -14,6 +14,13 @@ import (
"github.com/decred/dcrutil"
)
const (
// maxStandardMultiSigKeys is the maximum number of public keys allowed
// in a multi-signature transaction output script for it to be
// considered standard.
maxStandardMultiSigKeys = 3
)
// calcMinRequiredTxRelayFee returns the minimum transaction fee required for a
// transaction with the passed serialized size to be accepted into the memory
// pool and relayed.
@ -24,7 +31,6 @@ func calcMinRequiredTxRelayFee(serializedSize int64, minRelayTxFee dcrutil.Amoun
// divide the transaction size by 1000 to convert to kilobytes. Also,
// integer division is used so fees only increase on full kilobyte
// boundaries.
minFee := (serializedSize * int64(minRelayTxFee)) / 1000
if minFee == 0 && minRelayTxFee > 0 {
@ -87,6 +93,7 @@ func calcPriority(tx *dcrutil.Tx, inputValueAge float64) float64 {
// contribute no additional input age to the transaction.
func calcInputValueAge(txDesc *TxDesc, txStore blockchain.TxStore,
nextBlockHeight int64) float64 {
var totalInputAge float64
for _, txIn := range txDesc.Tx.MsgTx().TxIn {
originHash := &txIn.PreviousOutPoint.Hash
@ -124,9 +131,9 @@ func calcInputValueAge(txDesc *TxDesc, txStore blockchain.TxStore,
// process like OP_DUP OP_CHECKSIG OP_DROP repeated a large number of times
// followed by a final OP_TRUE.
// Decred TODO: I think this is okay, but we'll see with simnet.
func checkInputsStandard(tx *dcrutil.Tx,
txType stake.TxType,
func checkInputsStandard(tx *dcrutil.Tx, txType stake.TxType,
txStore blockchain.TxStore) error {
// NOTE: The reference implementation also does a coinbase check here,
// but coinbases have already been rejected prior to calling this
// function so no need to recheck.
@ -235,10 +242,11 @@ func checkPkScriptStandard(version uint16, pkScript []byte,
}
// isDust returns whether or not the passed transaction output amount is
// considered dust or not. Dust is defined in terms of the minimum transaction
// relay fee. In particular, if the cost to the network to spend coins is more
// than 1/3 of the minimum transaction relay fee, it is considered dust.
func isDust(txOut *wire.TxOut, minTxRelayFee dcrutil.Amount) bool {
// considered dust or not based on the passed minimum transaction relay fee.
// Dust is defined in terms of the minimum transaction relay fee. In
// particular, if the cost to the network to spend coins is more than 1/3 of the
// minimum transaction relay fee, it is considered dust.
func isDust(txOut *wire.TxOut, minRelayTxFee dcrutil.Amount) bool {
// Unspendable outputs are considered dust.
if txscript.IsUnspendable(txOut.PkScript) {
return true
@ -305,8 +313,7 @@ func isDust(txOut *wire.TxOut, minTxRelayFee dcrutil.Amount) bool {
//
// The following is equivalent to (value/totalSize) * (1/3) * 1000
// without needing to do floating point math.
return txOut.Value*1000/(3*int64(totalSize)) < int64(minTxRelayFee)
return txOut.Value*1000/(3*int64(totalSize)) < int64(minRelayTxFee)
}
// minInt is a helper function to return the minimum of two ints. This avoids