//---------------------------------------------------------------------------------
//proper tx_pool handling courtesy of CryptoZoidberg and Boolberry
bool tx_memory_pool::remove_stuck_transactions()
{
CRITICAL_REGION_LOCAL(m_transactions_lock);
for(auto it = m_transactions.begin(); it!= m_transactions.end();)
{
uint64_t tx_age = time(nullptr) - it->second.receive_time;
if((tx_age > CRYPTONOTE_MEMPOOL_TX_LIVETIME && !it->second.kept_by_block) ||
(tx_age > CRYPTONOTE_MEMPOOL_TX_FROM_ALT_BLOCK_LIVETIME && it->second.kept_by_block) )
{
LOG_PRINT_L1("Tx " << it->first << " removed from tx pool due to outdated, age: " << tx_age );
remove_transaction_keyimages(it->second.tx);
auto sorted_it = find_tx_in_sorted_container(it->first);
if (sorted_it == m_txs_by_fee.end())
{
LOG_PRINT_L1("Removing tx " << it->first << " from tx pool, but it was not found in the sorted txs container!");
}
else
{
m_txs_by_fee.erase(sorted_it);
}
m_transactions.erase(it++);
}else
++it;
}
return true;
}
//---------------------------------------------------------------------------------
bool tx_memory_pool::take_tx(const crypto::hash &id, transaction &tx, size_t& blob_size, uint64_t& fee)
{
CRITICAL_REGION_LOCAL(m_transactions_lock);
auto it = m_transactions.find(id);
if(it == m_transactions.end())
return false;
tx = it->second.tx;
blob_size = it->second.blob_size;
fee = it->second.fee;
remove_transaction_keyimages(it->second.tx);
m_transactions.erase(it);
return true;
}
//---------------------------------------------------------------------------------
bool tx_memory_pool::remove_stuck_transactions()
{
LOG_PRINT_L2("tx_memory_pool::remove_stuck_transactions()");
CRITICAL_REGION_LOCAL(m_transactions_lock);
for (auto it = m_transactions.begin(); it != m_transactions.end();)
{
uint64_t tx_age = time(nullptr) - it->second.receive_time;
if ((tx_age > CURRENCY_MEMPOOL_TX_LIVETIME && !it->second.kept_by_block) ||
(tx_age > CURRENCY_MEMPOOL_TX_FROM_ALT_BLOCK_LIVETIME && it->second.kept_by_block))
{
LOG_PRINT_L0("Tx " << it->first << " removed from tx pool due to outdated, age: " << tx_age);
remove_alias_tx_pair(it->first);
remove_transaction_keyimages(it->second.tx);
m_transactions.erase(it++);
}
else
++it;
}
return true;
}
//---------------------------------------------------------------------------------
bool tx_memory_pool::init(const std::string& config_folder)
{
CRITICAL_REGION_LOCAL(m_transactions_lock);
m_config_folder = config_folder;
std::string state_file_path = config_folder + "/" + CRYPTONOTE_POOLDATA_FILENAME;
boost::system::error_code ec;
if(!boost::filesystem::exists(state_file_path, ec))
return true;
bool res = tools::unserialize_obj_from_file(*this, state_file_path);
if(!res)
{
LOG_PRINT_L1("Failed to load memory pool from file " << state_file_path);
m_transactions.clear();
m_txs_by_fee.clear();
m_spent_key_images.clear();
}
for (auto it = m_transactions.begin(); it != m_transactions.end(); ) {
if (it->second.blob_size >= TRANSACTION_SIZE_LIMIT) {
LOG_PRINT_L1("Transaction " << get_transaction_hash(it->second.tx) << " is too big (" << it->second.blob_size << " bytes), removing it from pool");
remove_transaction_keyimages(it->second.tx);
m_transactions.erase(it);
}
it++;
}
// no need to store queue of sorted transactions, as it's easy to generate.
for (const auto& tx : m_transactions)
{
m_txs_by_fee.emplace((double)tx.second.blob_size / tx.second.fee, tx.first);
}
// Ignore deserialization error
return true;
}