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core: move the LockedTXN class out of txpool so it may be reused

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for example, in the RPC server
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moneromooo-monero 2019-12-10 18:15:00 +00:00
parent 820ab9fdea
commit f8d76f395b
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2 changed files with 65 additions and 30 deletions
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53
src/blockchain_db/locked_txn.h Normal file
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@ -0,0 +1,53 @@
// Copyright (c) 2014-2019, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#pragma once
namespace cryptonote
{
// This class is meant to create a batch when none currently exists.
// If a batch exists, it can't be from another thread, since we can
// only be called with the txpool lock taken, and it is held during
// the whole prepare/handle/cleanup incoming block sequence.
class LockedTXN {
public:
LockedTXN(BlockchainDB &db): m_db(db), m_batch(false), m_active(false) {
m_batch = m_db.batch_start();
m_active = true;
}
void commit() { try { if (m_batch && m_active) { m_db.batch_stop(); m_active = false; } } catch (const std::exception &e) { MWARNING("LockedTXN::commit filtering exception: " << e.what()); } }
void abort() { try { if (m_batch && m_active) { m_db.batch_abort(); m_active = false; } } catch (const std::exception &e) { MWARNING("LockedTXN::abort filtering exception: " << e.what()); } }
~LockedTXN() { abort(); }
private:
BlockchainDB &m_db;
bool m_batch;
bool m_active;
};
}

42
src/cryptonote_core/tx_pool.cpp
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@ -38,6 +38,7 @@
#include "cryptonote_basic/cryptonote_boost_serialization.h"
#include "cryptonote_config.h"
#include "blockchain.h"
#include "blockchain_db/locked_txn.h"
#include "blockchain_db/blockchain_db.h"
#include "common/boost_serialization_helper.h"
#include "int-util.h"
@ -88,25 +89,6 @@ namespace cryptonote
else
return get_min_block_weight(version) - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
}
// This class is meant to create a batch when none currently exists.
// If a batch exists, it can't be from another thread, since we can
// only be called with the txpool lock taken, and it is held during
// the whole prepare/handle/cleanup incoming block sequence.
class LockedTXN {
public:
LockedTXN(Blockchain &b): m_blockchain(b), m_batch(false), m_active(false) {
m_batch = m_blockchain.get_db().batch_start();
m_active = true;
}
void commit() { try { if (m_batch && m_active) { m_blockchain.get_db().batch_stop(); m_active = false; } } catch (const std::exception &e) { MWARNING("LockedTXN::commit filtering exception: " << e.what()); } }
void abort() { try { if (m_batch && m_active) { m_blockchain.get_db().batch_abort(); m_active = false; } } catch (const std::exception &e) { MWARNING("LockedTXN::abort filtering exception: " << e.what()); } }
~LockedTXN() { abort(); }
private:
Blockchain &m_blockchain;
bool m_batch;
bool m_active;
};
}
//---------------------------------------------------------------------------------
//---------------------------------------------------------------------------------
@ -256,7 +238,7 @@ namespace cryptonote
if (kept_by_block)
m_parsed_tx_cache.insert(std::make_pair(id, tx));
CRITICAL_REGION_LOCAL1(m_blockchain);
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
if (!insert_key_images(tx, id, tx_relay))
return false;
@ -301,7 +283,7 @@ namespace cryptonote
if (kept_by_block)
m_parsed_tx_cache.insert(std::make_pair(id, tx));
CRITICAL_REGION_LOCAL1(m_blockchain);
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
m_blockchain.remove_txpool_tx(id);
if (!insert_key_images(tx, id, tx_relay))
return false;
@ -362,7 +344,7 @@ namespace cryptonote
if (bytes == 0)
bytes = m_txpool_max_weight;
CRITICAL_REGION_LOCAL1(m_blockchain);
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
bool changed = false;
// this will never remove the first one, but we don't care
@ -494,7 +476,7 @@ namespace cryptonote
try
{
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
txpool_tx_meta_t meta;
if (!m_blockchain.get_txpool_tx_meta(id, meta))
{
@ -549,7 +531,7 @@ namespace cryptonote
try
{
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
txpool_tx_meta_t meta;
if (!m_blockchain.get_txpool_tx_meta(txid, meta))
{
@ -638,7 +620,7 @@ namespace cryptonote
if (!remove.empty())
{
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
for (const std::pair<crypto::hash, uint64_t> &entry: remove)
{
const crypto::hash &txid = entry.first;
@ -709,7 +691,7 @@ namespace cryptonote
CRITICAL_REGION_LOCAL(m_transactions_lock);
CRITICAL_REGION_LOCAL1(m_blockchain);
const time_t now = time(NULL);
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
for (const auto& hash : hashes)
{
try
@ -1186,7 +1168,7 @@ namespace cryptonote
CRITICAL_REGION_LOCAL(m_transactions_lock);
CRITICAL_REGION_LOCAL1(m_blockchain);
bool changed = false;
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
for(size_t i = 0; i!= tx.vin.size(); i++)
{
CHECKED_GET_SPECIFIC_VARIANT(tx.vin[i], const txin_to_key, itk, void());
@ -1278,7 +1260,7 @@ namespace cryptonote
LOG_PRINT_L2("Filling block template, median weight " << median_weight << ", " << m_txs_by_fee_and_receive_time.size() << " txes in the pool");
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
auto sorted_it = m_txs_by_fee_and_receive_time.begin();
for (; sorted_it != m_txs_by_fee_and_receive_time.end(); ++sorted_it)
@ -1415,7 +1397,7 @@ namespace cryptonote
size_t n_removed = 0;
if (!remove.empty())
{
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
for (const crypto::hash &txid: remove)
{
try
@ -1495,7 +1477,7 @@ namespace cryptonote
}
if (!remove.empty())
{
LockedTXN lock(m_blockchain);
LockedTXN lock(m_blockchain.get_db());
for (const auto &txid: remove)
{
try