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wallet2: fix O(n^2) behaviour in import_key_images

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That takes a lot of time for even not so large wallets
This commit is contained in:
moneromooo-monero 2018-07-24 14:33:33 +01:00
parent 702a41034d
commit ff37bd00bc
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GPG Key ID: 686F07454D6CEFC3
1 changed files with 15 additions and 21 deletions
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36
src/wallet/wallet2.cpp
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@ -9870,6 +9870,17 @@ uint64_t wallet2::import_key_images(const std::vector<std::pair<crypto::key_imag
std::unordered_set<crypto::hash> spent_txids; // For each spent key image, search for a tx in m_transfers that uses it as input. std::unordered_set<crypto::hash> spent_txids; // For each spent key image, search for a tx in m_transfers that uses it as input.
std::vector<size_t> swept_transfers; // If such a spending tx wasn't found in m_transfers, this means the spending tx std::vector<size_t> swept_transfers; // If such a spending tx wasn't found in m_transfers, this means the spending tx
// was created by sweep_all, so we can't know the spent height and other detailed info. // was created by sweep_all, so we can't know the spent height and other detailed info.
std::unordered_map<crypto::key_image, crypto::hash> spent_key_images;
for (const transfer_details &td: m_transfers)
{
for (const cryptonote::txin_v& in : td.m_tx.vin)
{
if (in.type() == typeid(cryptonote::txin_to_key))
spent_key_images.insert(std::make_pair(boost::get<cryptonote::txin_to_key>(in).k_image, td.m_txid));
}
}
for(size_t i = 0; i < signed_key_images.size(); ++i) for(size_t i = 0; i < signed_key_images.size(); ++i)
{ {
transfer_details &td = m_transfers[i]; transfer_details &td = m_transfers[i];
@ -9883,28 +9894,11 @@ uint64_t wallet2::import_key_images(const std::vector<std::pair<crypto::key_imag
if (i < daemon_resp.spent_status.size() && daemon_resp.spent_status[i] == COMMAND_RPC_IS_KEY_IMAGE_SPENT::SPENT_IN_BLOCKCHAIN) if (i < daemon_resp.spent_status.size() && daemon_resp.spent_status[i] == COMMAND_RPC_IS_KEY_IMAGE_SPENT::SPENT_IN_BLOCKCHAIN)
{ {
bool is_spent_tx_found = false; const std::unordered_map<crypto::key_image, crypto::hash>::const_iterator skii = spent_key_images.find(td.m_key_image);
for (auto it = m_transfers.rbegin(); &(*it) != &td; ++it) if (skii == spent_key_images.end())
{
bool is_spent_tx = false;
for(const cryptonote::txin_v& in : it->m_tx.vin)
{
if(in.type() == typeid(cryptonote::txin_to_key) && td.m_key_image == boost::get<cryptonote::txin_to_key>(in).k_image)
{
is_spent_tx = true;
break;
}
}
if (is_spent_tx)
{
is_spent_tx_found = true;
spent_txids.insert(it->m_txid);
break;
}
}
if (!is_spent_tx_found)
swept_transfers.push_back(i); swept_transfers.push_back(i);
else
spent_txids.insert(skii->second);
} }
} }
MDEBUG("Total: " << print_money(spent) << " spent, " << print_money(unspent) << " unspent"); MDEBUG("Total: " << print_money(spent) << " spent, " << print_money(unspent) << " unspent");