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Merge pull request #4909

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756684bb blockchain: avoid unnecessary DB lookups when syncing (moneromooo-monero)
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Riccardo Spagni 2018-12-12 11:59:25 +02:00
commit 83684ea515
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GPG key ID: 55432DF31CCD4FCD
2 changed files with 86 additions and 35 deletions
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117
src/cryptonote_core/blockchain.cpp
View file

@ -3755,7 +3755,7 @@ void Blockchain::set_enforce_dns_checkpoints(bool enforce_checkpoints)
}
//------------------------------------------------------------------
void Blockchain::block_longhash_worker(uint64_t height, const std::vector<block> &blocks, std::unordered_map<crypto::hash, crypto::hash> &map) const
void Blockchain::block_longhash_worker(uint64_t height, const epee::span<const block> &blocks, std::unordered_map<crypto::hash, crypto::hash> &map) const
{
TIME_MEASURE_START(t);
slow_hash_allocate_state();
@ -3841,11 +3841,33 @@ bool Blockchain::cleanup_handle_incoming_blocks(bool force_sync)
}
//------------------------------------------------------------------
void Blockchain::output_scan_worker(const uint64_t amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs) const
void Blockchain::output_scan_worker(const uint64_t amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, const std::vector<output_data_t> &extra_tx_map) const
{
try
{
m_db->get_output_key(epee::span<const uint64_t>(&amount, 1), offsets, outputs, true);
if (outputs.size() < offsets.size())
{
const uint64_t n_outputs = m_db->get_num_outputs(amount);
for (size_t i = outputs.size(); i < offsets.size(); ++i)
{
uint64_t idx = offsets[i];
if (idx < n_outputs)
{
MWARNING("Index " << idx << " not found in db for amount " << amount << ", but it is less than the number of entries");
break;
}
else if (idx < n_outputs + extra_tx_map.size())
{
outputs.push_back(extra_tx_map[idx - n_outputs]);
}
else
{
MWARNING("missed " << amount << "/" << idx << " in " << extra_tx_map.size() << " (chain " << n_outputs << ")");
break;
}
}
}
}
catch (const std::exception& e)
{
@ -3960,6 +3982,34 @@ uint64_t Blockchain::prevalidate_block_hashes(uint64_t height, const std::vector
// vs [k_image, output_keys] (m_scan_table). This is faster because it takes advantage of bulk queries
// and is threaded if possible. The table (m_scan_table) will be used later when querying output
// keys.
static bool update_output_map(std::map<uint64_t, std::vector<output_data_t>> &extra_tx_map, const transaction &tx, uint64_t height, bool miner)
{
MTRACE("Blockchain::" << __func__);
for (size_t i = 0; i < tx.vout.size(); ++i)
{
const auto &out = tx.vout[i];
if (out.target.type() != typeid(txout_to_key))
continue;
const txout_to_key &out_to_key = boost::get<txout_to_key>(out.target);
rct::key commitment;
uint64_t amount = out.amount;
if (miner && tx.version == 2)
{
commitment = rct::zeroCommit(amount);
amount = 0;
}
else if (tx.version > 1)
{
CHECK_AND_ASSERT_MES(i < tx.rct_signatures.outPk.size(), false, "Invalid outPk size");
commitment = tx.rct_signatures.outPk[i].mask;
}
else
commitment = rct::zero();
extra_tx_map[amount].push_back(output_data_t{out_to_key.key, tx.unlock_time, height, commitment});
}
return true;
}
bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete_entry> &blocks_entry)
{
MTRACE("Blockchain::" << __func__);
@ -4006,42 +4056,40 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
m_blockchain_lock.lock();
}
if ((m_db->height() + blocks_entry.size()) < m_blocks_hash_check.size())
const uint64_t height = m_db->height();
if ((height + blocks_entry.size()) < m_blocks_hash_check.size())
return true;
bool blocks_exist = false;
tools::threadpool& tpool = tools::threadpool::getInstance();
uint64_t threads = tpool.get_max_concurrency();
unsigned threads = tpool.get_max_concurrency();
std::vector<block> blocks;
blocks.resize(blocks_entry.size());
if (blocks_entry.size() > 1 && threads > 1 && m_max_prepare_blocks_threads > 1)
if (1)
{
// limit threads, default limit = 4
if(threads > m_max_prepare_blocks_threads)
threads = m_max_prepare_blocks_threads;
uint64_t height = m_db->height();
int batches = blocks_entry.size() / threads;
int extra = blocks_entry.size() % threads;
unsigned int batches = blocks_entry.size() / threads;
unsigned int extra = blocks_entry.size() % threads;
MDEBUG("block_batches: " << batches);
std::vector<std::unordered_map<crypto::hash, crypto::hash>> maps(threads);
std::vector < std::vector < block >> blocks(threads);
auto it = blocks_entry.begin();
unsigned blockidx = 0;
for (uint64_t i = 0; i < threads; i++)
for (unsigned i = 0; i < threads; i++)
{
blocks[i].reserve(batches + 1);
for (int j = 0; j < batches; j++)
for (unsigned int j = 0; j < batches; j++, ++blockidx)
{
block block;
block &block = blocks[blockidx];
if (!parse_and_validate_block_from_blob(it->block, block))
{
std::advance(it, 1);
continue;
}
return false;
// check first block and skip all blocks if its not chained properly
if (i == 0 && j == 0)
if (blockidx == 0)
{
crypto::hash tophash = m_db->top_block_hash();
if (block.prev_id != tophash)
@ -4056,20 +4104,16 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
break;
}
blocks[i].push_back(std::move(block));
std::advance(it, 1);
}
}
for (int i = 0; i < extra && !blocks_exist; i++)
for (unsigned i = 0; i < extra && !blocks_exist; i++, blockidx++)
{
block block;
block &block = blocks[blockidx];
if (!parse_and_validate_block_from_blob(it->block, block))
{
std::advance(it, 1);
continue;
}
return false;
if (have_block(get_block_hash(block)))
{
@ -4077,7 +4121,6 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
break;
}
blocks[i].push_back(std::move(block));
std::advance(it, 1);
}
@ -4086,10 +4129,13 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
m_blocks_longhash_table.clear();
uint64_t thread_height = height;
tools::threadpool::waiter waiter;
for (uint64_t i = 0; i < threads; i++)
for (unsigned int i = 0; i < threads; i++)
{
tpool.submit(&waiter, boost::bind(&Blockchain::block_longhash_worker, this, thread_height, std::cref(blocks[i]), std::ref(maps[i])), true);
thread_height += blocks[i].size();
unsigned nblocks = batches;
if (i < extra)
++nblocks;
tpool.submit(&waiter, boost::bind(&Blockchain::block_longhash_worker, this, thread_height, epee::span<const block>(&blocks[i], nblocks), std::ref(maps[i])), true);
thread_height += nblocks;
}
waiter.wait(&tpool);
@ -4132,7 +4178,7 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
// [input] stores all absolute_offsets for each amount
std::map<uint64_t, std::vector<uint64_t>> offset_map;
// [output] stores all output_data_t for each absolute_offset
std::map<uint64_t, std::vector<output_data_t>> tx_map;
std::map<uint64_t, std::vector<output_data_t>> tx_map, extra_tx_map;
std::vector<std::pair<cryptonote::transaction, crypto::hash>> txes(total_txs);
#define SCAN_TABLE_QUIT(m) \
@ -4143,12 +4189,14 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
} while(0); \
// generate sorted tables for all amounts and absolute offsets
size_t tx_index = 0;
size_t tx_index = 0, block_index = 0;
for (const auto &entry : blocks_entry)
{
if (m_cancel)
return false;
if (!update_output_map(extra_tx_map, blocks[block_index].miner_tx, height + block_index, true))
SCAN_TABLE_QUIT("Error building extra tx map.");
for (const auto &tx_blob : entry.txs)
{
if (tx_index >= txes.size())
@ -4207,7 +4255,10 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
offset_map[in_to_key.amount].push_back(offset);
}
if (!update_output_map(extra_tx_map, tx, height + block_index, false))
SCAN_TABLE_QUIT("Error building extra tx map.");
}
++block_index;
}
// sort and remove duplicate absolute_offsets in offset_map
@ -4230,7 +4281,7 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
for (size_t i = 0; i < amounts.size(); i++)
{
uint64_t amount = amounts[i];
tpool.submit(&waiter, boost::bind(&Blockchain::output_scan_worker, this, amount, std::cref(offset_map[amount]), std::ref(tx_map[amount])), true);
tpool.submit(&waiter, boost::bind(&Blockchain::output_scan_worker, this, amount, std::cref(offset_map[amount]), std::ref(tx_map[amount]), std::cref(extra_tx_map[amount])), true);
}
waiter.wait(&tpool);
}
@ -4239,7 +4290,7 @@ bool Blockchain::prepare_handle_incoming_blocks(const std::vector<block_complete
for (size_t i = 0; i < amounts.size(); i++)
{
uint64_t amount = amounts[i];
output_scan_worker(amount, offset_map[amount], tx_map[amount]);
output_scan_worker(amount, offset_map[amount], tx_map[amount], extra_tx_map[amount]);
}
}

4
src/cryptonote_core/blockchain.h
View file

@ -918,7 +918,7 @@ namespace cryptonote
* @param outputs return-by-reference the outputs collected
*/
void output_scan_worker(const uint64_t amount,const std::vector<uint64_t> &offsets,
std::vector<output_data_t> &outputs) const;
std::vector<output_data_t> &outputs, const std::vector<output_data_t> &extra_tx_map) const;
/**
* @brief computes the "short" and "long" hashes for a set of blocks
@ -927,7 +927,7 @@ namespace cryptonote
* @param blocks the blocks to be hashed
* @param map return-by-reference the hashes for each block
*/
void block_longhash_worker(uint64_t height, const std::vector<block> &blocks,
void block_longhash_worker(uint64_t height, const epee::span<const block> &blocks,
std::unordered_map<crypto::hash, crypto::hash> &map) const;
/**