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Added comments to wallet functions

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This commit is contained in:
Thomas Winget 2014-06-13 14:05:15 -04:00
parent 4c67dbb08e
commit fc1180bc6c
2 changed files with 13 additions and 0 deletions
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7
src/wallet/wallet2.cpp
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@ -630,10 +630,17 @@ namespace
} }
} }
//---------------------------------------------------------------------------------------------------- //----------------------------------------------------------------------------------------------------
// Select random input sources for transaction.
// returns:
// direct return: amount of money found
// modified reference: selected_transfers, a list of iterators/indices of input sources
uint64_t wallet2::select_transfers(uint64_t needed_money, bool add_dust, uint64_t dust, std::list<transfer_container::iterator>& selected_transfers) uint64_t wallet2::select_transfers(uint64_t needed_money, bool add_dust, uint64_t dust, std::list<transfer_container::iterator>& selected_transfers)
{ {
std::vector<size_t> unused_transfers_indices; std::vector<size_t> unused_transfers_indices;
std::vector<size_t> unused_dust_indices; std::vector<size_t> unused_dust_indices;
// aggregate sources available for transfers
// if dust needed, take dust from only one source (so require source has at least dust amount)
for (size_t i = 0; i < m_transfers.size(); ++i) for (size_t i = 0; i < m_transfers.size(); ++i)
{ {
const transfer_details& td = m_transfers[i]; const transfer_details& td = m_transfers[i];

6
src/wallet/wallet2.h
View File

@ -304,9 +304,13 @@ namespace tools
uint64_t unlock_time, uint64_t fee, const std::vector<uint8_t>& extra, T destination_split_strategy, const tx_dust_policy& dust_policy, cryptonote::transaction &tx) uint64_t unlock_time, uint64_t fee, const std::vector<uint8_t>& extra, T destination_split_strategy, const tx_dust_policy& dust_policy, cryptonote::transaction &tx)
{ {
using namespace cryptonote; using namespace cryptonote;
// throw if attempting a transaction with no destinations
THROW_WALLET_EXCEPTION_IF(dsts.empty(), error::zero_destination); THROW_WALLET_EXCEPTION_IF(dsts.empty(), error::zero_destination);
uint64_t needed_money = fee; uint64_t needed_money = fee;
// calculate total amount being sent to all destinations
// throw if total amount overflows uint64_t
BOOST_FOREACH(auto& dt, dsts) BOOST_FOREACH(auto& dt, dsts)
{ {
THROW_WALLET_EXCEPTION_IF(0 == dt.amount, error::zero_destination); THROW_WALLET_EXCEPTION_IF(0 == dt.amount, error::zero_destination);
@ -314,6 +318,8 @@ namespace tools
THROW_WALLET_EXCEPTION_IF(needed_money < dt.amount, error::tx_sum_overflow, dsts, fee); THROW_WALLET_EXCEPTION_IF(needed_money < dt.amount, error::tx_sum_overflow, dsts, fee);
} }
// randomly select inputs for transaction
// throw if requested send amount is greater than amount available to send
std::list<transfer_container::iterator> selected_transfers; std::list<transfer_container::iterator> selected_transfers;
uint64_t found_money = select_transfers(needed_money, 0 == fake_outputs_count, dust_policy.dust_threshold, selected_transfers); uint64_t found_money = select_transfers(needed_money, 0 == fake_outputs_count, dust_policy.dust_threshold, selected_transfers);
THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_money, found_money, needed_money - fee, fee); THROW_WALLET_EXCEPTION_IF(found_money < needed_money, error::not_enough_money, found_money, needed_money - fee, fee);