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Have CalculateMaximumSignedTxSize also compute tx weight

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This commit is contained in:
Andrew Chow
2020-11-30 16:13:12 -05:00
parent 81d5af42f4
commit 51e2cd322c
3 changed files with 15 additions and 9 deletions
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18
src/wallet/wallet.cpp
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@@ -1594,14 +1594,15 @@ bool CWallet::ImportScriptPubKeys(const std::string& label, const std::set<CScri
return true;
}
int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, bool use_max_sig)
// Returns pair of vsize and weight
std::pair<int64_t, int64_t> CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, bool use_max_sig)
{
std::vector<CTxOut> txouts;
for (const CTxIn& input : tx.vin) {
const auto mi = wallet->mapWallet.find(input.prevout.hash);
// Can not estimate size without knowing the input details
if (mi == wallet->mapWallet.end()) {
return -1;
return std::make_pair(-1, -1);
}
assert(input.prevout.n < mi->second.tx->vout.size());
txouts.emplace_back(mi->second.tx->vout[input.prevout.n]);
@@ -1610,13 +1611,16 @@ int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wall
}
// txouts needs to be in the order of tx.vin
int64_t CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, const std::vector<CTxOut>& txouts, bool use_max_sig)
std::pair<int64_t, int64_t> CalculateMaximumSignedTxSize(const CTransaction &tx, const CWallet *wallet, const std::vector<CTxOut>& txouts, bool use_max_sig)
{
CMutableTransaction txNew(tx);
if (!wallet->DummySignTx(txNew, txouts, use_max_sig)) {
return -1;
return std::make_pair(-1, -1);
}
return GetVirtualTransactionSize(CTransaction(txNew));
CTransaction ctx(txNew);
int64_t vsize = GetVirtualTransactionSize(ctx);
int64_t weight = GetTransactionWeight(ctx);
return std::make_pair(vsize, weight);
}
int CalculateMaximumSignedInputSize(const CTxOut& txout, const CWallet* wallet, bool use_max_sig)
@@ -2770,6 +2774,7 @@ bool CWallet::CreateTransactionInternal(
CMutableTransaction txNew;
FeeCalculation feeCalc;
CAmount nFeeNeeded;
std::pair<int64_t, int64_t> tx_sizes;
int nBytes;
{
std::set<CInputCoin> setCoins;
@@ -2952,7 +2957,8 @@ bool CWallet::CreateTransactionInternal(
txNew.vin.push_back(CTxIn(coin.outpoint,CScript()));
}
nBytes = CalculateMaximumSignedTxSize(CTransaction(txNew), this, coin_control.fAllowWatchOnly);
tx_sizes = CalculateMaximumSignedTxSize(CTransaction(txNew), this, coin_control.fAllowWatchOnly);
nBytes = tx_sizes.first;
if (nBytes < 0) {
error = _("Signing transaction failed");
return false;