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Avoid copying undo data

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This commit is contained in:
Pieter Wuille 2014-09-03 15:54:37 +02:00
parent 438c7e4cd2
commit ab15b2ec71
1 changed files with 11 additions and 8 deletions
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19
src/main.cpp
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@ -1351,12 +1351,13 @@ void UpdateCoins(const CTransaction& tx, CValidationState &state, CCoinsViewCach
bool ret;
// mark inputs spent
if (!tx.IsCoinBase()) {
BOOST_FOREACH(const CTxIn &txin, tx.vin) {
txundo.vprevout.reserve(tx.vin.size());
for (unsigned int i = 0; i < tx.vin.size(); i++) {
const CTxIn &txin = tx.vin[i];
CCoins &coins = inputs.GetCoins(txin.prevout.hash);
CTxInUndo undo;
ret = coins.Spend(txin.prevout, undo);
txundo.vprevout.push_back(CTxInUndo());
ret = coins.Spend(txin.prevout, txundo.vprevout.back());
assert(ret);
txundo.vprevout.push_back(undo);
}
}
@ -1663,6 +1664,7 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
CDiskTxPos pos(pindex->GetBlockPos(), GetSizeOfCompactSize(block.vtx.size()));
std::vector<std::pair<uint256, CDiskTxPos> > vPos;
vPos.reserve(block.vtx.size());
blockundo.vtxundo.reserve(block.vtx.size() - 1);
for (unsigned int i = 0; i < block.vtx.size(); i++)
{
const CTransaction &tx = block.vtx[i];
@ -1698,10 +1700,11 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
control.Add(vChecks);
}
CTxUndo txundo;
UpdateCoins(tx, state, view, txundo, pindex->nHeight);
if (!tx.IsCoinBase())
blockundo.vtxundo.push_back(txundo);
CTxUndo undoDummy;
if (i > 0) {
blockundo.vtxundo.push_back(CTxUndo());
}
UpdateCoins(tx, state, view, i == 0 ? undoDummy : blockundo.vtxundo.back(), pindex->nHeight);
vPos.push_back(std::make_pair(tx.GetHash(), pos));
pos.nTxOffset += ::GetSerializeSize(tx, SER_DISK, CLIENT_VERSION);