diff options
Diffstat (limited to 'src/wallet/wallet2.cpp')
| -rw-r--r-- | src/wallet/wallet2.cpp | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index 0ad74f52a..14a2eb112 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -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); |