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Merge pull request #1574

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d276a165 wallet2: use at least two rct inputs if possible (moneromooo-monero)
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Riccardo Spagni 2017-01-15 14:55:40 -05:00
commit 9cda94d0aa
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GPG Key ID: 55432DF31CCD4FCD
2 changed files with 36 additions and 9 deletions
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41
src/wallet/wallet2.cpp
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@ -2733,7 +2733,7 @@ float wallet2::get_output_relatedness(const transfer_details &td0, const transfe
return 0.0f;
}
//----------------------------------------------------------------------------------------------------
size_t wallet2::pop_best_value_from(const transfer_container &transfers, std::vector<size_t> &unused_indices, const std::list<size_t>& selected_transfers) const
size_t wallet2::pop_best_value_from(const transfer_container &transfers, std::vector<size_t> &unused_indices, const std::list<size_t>& selected_transfers, bool smallest) const
{
std::vector<size_t> candidates;
float best_relatedness = 1.0f;
@ -2761,13 +2761,30 @@ size_t wallet2::pop_best_value_from(const transfer_container &transfers, std::ve
if (relatedness == best_relatedness)
candidates.push_back(n);
}
size_t idx = crypto::rand<size_t>() % candidates.size();
// we have all the least related outputs in candidates, so we can pick either
// the smallest, or a random one, depending on request
size_t idx;
if (smallest)
{
idx = 0;
for (size_t n = 0; n < candidates.size(); ++n)
{
const transfer_details &td = transfers[unused_indices[candidates[n]]];
if (td.amount() < transfers[unused_indices[candidates[idx]]].amount())
idx = n;
}
}
else
{
idx = crypto::rand<size_t>() % candidates.size();
}
return pop_index (unused_indices, candidates[idx]);
}
//----------------------------------------------------------------------------------------------------
size_t wallet2::pop_best_value(std::vector<size_t> &unused_indices, const std::list<size_t>& selected_transfers) const
size_t wallet2::pop_best_value(std::vector<size_t> &unused_indices, const std::list<size_t>& selected_transfers, bool smallest) const
{
return pop_best_value_from(m_transfers, unused_indices, selected_transfers);
return pop_best_value_from(m_transfers, unused_indices, selected_transfers, smallest);
}
//----------------------------------------------------------------------------------------------------
// Select random input sources for transaction.
@ -4109,8 +4126,11 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
}
}
// while we have something to send
while ((!dsts.empty() && dsts[0].amount > 0) || adding_fee) {
// while:
// - we have something to send
// - or we need to gather more fee
// - or we have just one input in that tx, which is rct (to try and make all/most rct txes 2/2)
while ((!dsts.empty() && dsts[0].amount > 0) || adding_fee || (use_rct && txes.back().selected_transfers.size() == 1)) {
TX &tx = txes.back();
// if we need to spend money and don't have any left, we fail
@ -4121,7 +4141,14 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp
// get a random unspent output and use it to pay part (or all) of the current destination (and maybe next one, etc)
// This could be more clever, but maybe at the cost of making probabilistic inferences easier
size_t idx = !prefered_inputs.empty() ? pop_back(prefered_inputs) : !unused_transfers_indices.empty() ? pop_best_value(unused_transfers_indices, tx.selected_transfers) : pop_best_value(unused_dust_indices, tx.selected_transfers);
size_t idx;
if ((dsts.empty() || dsts[0].amount == 0) && !adding_fee)
// the "make rct txes 2/2" case - we pick a small value output to "clean up" the wallet too
idx = pop_best_value(unused_dust_indices.empty() ? unused_transfers_indices : unused_dust_indices, tx.selected_transfers, true);
else if (!prefered_inputs.empty())
idx = pop_back(prefered_inputs);
else
idx = pop_best_value(unused_transfers_indices.empty() ? unused_dust_indices : unused_transfers_indices, tx.selected_transfers);
const transfer_details &td = m_transfers[idx];
LOG_PRINT_L2("Picking output " << idx << ", amount " << print_money(td.amount()) << ", ki " << td.m_key_image);

4
src/wallet/wallet2.h
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@ -527,8 +527,8 @@ namespace tools
std::vector<size_t> select_available_unmixable_outputs(bool trusted_daemon);
std::vector<size_t> select_available_mixable_outputs(bool trusted_daemon);
size_t pop_best_value_from(const transfer_container &transfers, std::vector<size_t> &unused_dust_indices, const std::list<size_t>& selected_transfers) const;
size_t pop_best_value(std::vector<size_t> &unused_dust_indices, const std::list<size_t>& selected_transfers) const;
size_t pop_best_value_from(const transfer_container &transfers, std::vector<size_t> &unused_dust_indices, const std::list<size_t>& selected_transfers, bool smallest = false) const;
size_t pop_best_value(std::vector<size_t> &unused_dust_indices, const std::list<size_t>& selected_transfers, bool smallest = false) const;
void set_tx_note(const crypto::hash &txid, const std::string &note);
std::string get_tx_note(const crypto::hash &txid) const;