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Coinselection prunes extraneous inputs from ApproximateBestSubset

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A further pass over the available inputs has been added to ApproximateBestSubset after a candidate set has been found. It will prune any extraneous inputs in the selected subset, in order to decrease the number of input and the resulting change.
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AlSzacrel 2014-09-13 02:09:18 +02:00 committed by Murch
parent 075faaebf2
commit 5c03483e26
1 changed files with 13 additions and 0 deletions
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13
src/wallet/wallet.cpp
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@ -1620,6 +1620,19 @@ static void ApproximateBestSubset(vector<pair<CAmount, pair<const CWalletTx*,uns
if (nTotal >= nTargetValue)
{
fReachedTarget = true;
for (unsigned int i = 0; i < vValue.size(); i++)
{
//The target has been reached, but the candidate set may contain extraneous inputs.
//This iterates over all inputs and deducts any that are included, but smaller
//than the amount nTargetValue is still exceeded by.
if (vfIncluded[i] && (nTotal - vValue[i].first) >= nTargetValue )
{
vfIncluded[i] = false;
nTotal -= vValue[i].first;
}
}
if (nTotal < nBest)
{
nBest = nTotal;