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wallet2: speedup large tx construction: reserve vector memory

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2.8 seconds -> 2.6 seconds on a test case
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moneromooo-monero 2021-11-05 19:57:49 +00:00 committed by wowario
parent 940811465f
commit 2eeb3fc1bf
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GPG key ID: 24DCBE762DE9C111
1 changed files with 4 additions and 0 deletions
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4
src/wallet/wallet2.cpp
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@ -8583,6 +8583,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::request req_t = AUTO_VAL_INIT(req_t);
cryptonote::COMMAND_RPC_GET_OUTPUT_HISTOGRAM::response resp_t = AUTO_VAL_INIT(resp_t);
// request histogram for all outputs, except 0 if we have the rct distribution
req_t.amounts.reserve(selected_transfers.size());
for(size_t idx: selected_transfers)
if (!m_transfers[idx].is_rct() || !has_rct_distribution)
req_t.amounts.push_back(m_transfers[idx].is_rct() ? 0 : m_transfers[idx].amount());
@ -8610,6 +8611,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
{
cryptonote::COMMAND_RPC_GET_OUTPUT_DISTRIBUTION::request req_t = AUTO_VAL_INIT(req_t);
cryptonote::COMMAND_RPC_GET_OUTPUT_DISTRIBUTION::response resp_t = AUTO_VAL_INIT(resp_t);
req_t.amounts.reserve(req_t.amounts.size() + selected_transfers.size());
for(size_t idx: selected_transfers)
req_t.amounts.push_back(m_transfers[idx].is_rct() ? 0 : m_transfers[idx].amount());
std::sort(req_t.amounts.begin(), req_t.amounts.end());
@ -8688,6 +8690,8 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
gamma.reset(new gamma_picker(rct_offsets));
size_t num_selected_transfers = 0;
req.outputs.reserve(selected_transfers.size() * (base_requested_outputs_count + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW));
daemon_resp.outs.reserve(selected_transfers.size() * (base_requested_outputs_count + CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW));
for(size_t idx: selected_transfers)
{
++num_selected_transfers;