nihilist/monero
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

blockchain_ancestry: faster and uses less memory

Browse Source
This commit is contained in:
moneromooo-monero 2018-07-30 21:36:38 +01:00
parent 2382484dcd
commit 628428a0df
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
1 changed files with 114 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

150
src/blockchain_utilities/blockchain_ancestry.cpp
View File

@ -73,31 +73,101 @@ namespace std
{
size_t operator()(const ancestor &a) const
{
crypto::hash h;
crypto::cn_fast_hash(&a, sizeof(a), h);
return reinterpret_cast<const std::size_t &>(h);
return a.amount ^ a.offset; // not that bad, since amount almost always have a high bit set, and offset doesn't
}
};
}
struct tx_data_t
{
std::vector<std::pair<uint64_t, std::vector<uint64_t>>> vin;
std::vector<crypto::public_key> vout;
bool coinbase;
tx_data_t(): coinbase(false) {}
tx_data_t(const cryptonote::transaction &tx)
{
coinbase = tx.vin.size() == 1 && tx.vin[0].type() == typeid(cryptonote::txin_gen);
if (!coinbase)
{
vin.reserve(tx.vin.size());
for (size_t ring = 0; ring < tx.vin.size(); ++ring)
{
if (tx.vin[ring].type() == typeid(cryptonote::txin_to_key))
{
const cryptonote::txin_to_key &txin = boost::get<cryptonote::txin_to_key>(tx.vin[ring]);
vin.push_back(std::make_pair(txin.amount, cryptonote::relative_output_offsets_to_absolute(txin.key_offsets)));
}
else
{
LOG_PRINT_L0("Bad vin type in txid " << get_transaction_hash(tx));
throw std::runtime_error("Bad vin type");
}
}
}
vout.reserve(tx.vout.size());
for (size_t out = 0; out < tx.vout.size(); ++out)
{
if (tx.vout[out].target.type() == typeid(cryptonote::txout_to_key))
{
const auto &txout = boost::get<cryptonote::txout_to_key>(tx.vout[out].target);
vout.push_back(txout.key);
}
else
{
LOG_PRINT_L0("Bad vout type in txid " << get_transaction_hash(tx));
throw std::runtime_error("Bad vout type");
}
}
}
template <typename t_archive> void serialize(t_archive &a, const unsigned int ver)
{
a & coinbase;
a & vin;
a & vout;
}
};
struct ancestry_state_t
{
uint64_t height;
std::unordered_map<crypto::hash, std::unordered_set<ancestor>> ancestry;
std::unordered_map<ancestor, crypto::hash> output_cache;
std::unordered_map<crypto::hash, cryptonote::transaction> tx_cache;
std::unordered_map<uint64_t, cryptonote::block> block_cache;
std::unordered_map<crypto::hash, ::tx_data_t> tx_cache;
std::vector<cryptonote::block> block_cache;
template <typename t_archive> void serialize(t_archive &a, const unsigned int ver)
{
a & height;
a & ancestry;
a & output_cache;
if (ver < 1)
{
std::unordered_map<crypto::hash, cryptonote::transaction> old_tx_cache;
a & old_tx_cache;
for (const auto i: old_tx_cache)
tx_cache.insert(std::make_pair(i.first, ::tx_data_t(i.second)));
}
else
{
a & tx_cache;
}
if (ver < 2)
{
std::unordered_map<uint64_t, cryptonote::block> old_block_cache;
a & old_block_cache;
block_cache.resize(old_block_cache.size());
for (const auto i: old_block_cache)
block_cache[i.first] = i.second;
}
else
{
a & block_cache;
}
}
};
BOOST_CLASS_VERSION(ancestry_state_t, 0)
BOOST_CLASS_VERSION(ancestry_state_t, 2)
static void add_ancestor(std::unordered_map<ancestor, unsigned int> &ancestry, uint64_t amount, uint64_t offset)
{
@ -333,6 +403,7 @@ int main(int argc, char* argv[])
MINFO("Starting from height " << state.height);
const uint64_t db_height = db->height();
state.block_cache.reserve(db_height);
for (uint64_t h = state.height; h < db_height; ++h)
{
size_t block_ancestry_size = 0;
@ -346,7 +417,10 @@ int main(int argc, char* argv[])
return 1;
}
if (opt_cache_blocks)
state.block_cache.insert(std::make_pair(h, b));
{
state.block_cache.resize(h + 1);
state.block_cache[h] = b;
}
std::vector<crypto::hash> txids;
txids.reserve(1 + b.tx_hashes.size());
if (opt_include_coinbase)
@ -357,13 +431,13 @@ int main(int argc, char* argv[])
{
printf("%lu/%lu \r", (unsigned long)h, (unsigned long)db_height);
fflush(stdout);
cryptonote::transaction tx;
std::unordered_map<crypto::hash, cryptonote::transaction>::const_iterator i = state.tx_cache.find(txid);
::tx_data_t tx_data;
std::unordered_map<crypto::hash, ::tx_data_t>::const_iterator i = state.tx_cache.find(txid);
++total_txes;
if (i != state.tx_cache.end())
{
++cached_txes;
tx = i->second;
tx_data = i->second;
}
else
{
@ -373,39 +447,38 @@ int main(int argc, char* argv[])
LOG_PRINT_L0("Failed to get txid " << txid << " from db");
return 1;
}
cryptonote::transaction tx;
if (!cryptonote::parse_and_validate_tx_base_from_blob(bd, tx))
{
LOG_PRINT_L0("Bad tx: " << txid);
return 1;
}
tx_data = ::tx_data_t(tx);
if (opt_cache_txes)
state.tx_cache.insert(std::make_pair(txid, tx));
state.tx_cache.insert(std::make_pair(txid, tx_data));
}
const bool coinbase = tx.vin.size() == 1 && tx.vin[0].type() == typeid(cryptonote::txin_gen);
if (coinbase)
if (tx_data.coinbase)
{
add_ancestry(state.ancestry, txid, std::unordered_set<ancestor>());
}
else
{
for (size_t ring = 0; ring < tx.vin.size(); ++ring)
for (size_t ring = 0; ring < tx_data.vin.size(); ++ring)
{
if (tx.vin[ring].type() == typeid(cryptonote::txin_to_key))
if (1)
{
const cryptonote::txin_to_key &txin = boost::get<cryptonote::txin_to_key>(tx.vin[ring]);
const uint64_t amount = txin.amount;
auto absolute_offsets = cryptonote::relative_output_offsets_to_absolute(txin.key_offsets);
const uint64_t amount = tx_data.vin[ring].first;
const std::vector<uint64_t> &absolute_offsets = tx_data.vin[ring].second;
for (uint64_t offset: absolute_offsets)
{
const output_data_t od = db->get_output_key(amount, offset);
add_ancestry(state.ancestry, txid, ancestor{amount, offset});
cryptonote::block b;
auto iblock = state.block_cache.find(od.height);
++total_blocks;
if (iblock != state.block_cache.end())
if (state.block_cache.size() > od.height && !state.block_cache[od.height].miner_tx.vin.empty())
{
++cached_blocks;
b = iblock->second;
b = state.block_cache[od.height];
}
else
{
@ -417,7 +490,10 @@ int main(int argc, char* argv[])
return 1;
}
if (opt_cache_blocks)
state.block_cache.insert(std::make_pair(od.height, b));
{
state.block_cache.resize(od.height + 1);
state.block_cache[od.height] = b;
}
}
// find the tx which created this output
bool found = false;
@ -453,13 +529,13 @@ int main(int argc, char* argv[])
{
if (found)
break;
cryptonote::transaction tx2;
std::unordered_map<crypto::hash, cryptonote::transaction>::const_iterator i = state.tx_cache.find(block_txid);
::tx_data_t tx_data2;
std::unordered_map<crypto::hash, ::tx_data_t>::const_iterator i = state.tx_cache.find(block_txid);
++total_txes;
if (i != state.tx_cache.end())
{
++cached_txes;
tx2 = i->second;
tx_data2 = i->second;
}
else
{
@ -469,20 +545,19 @@ int main(int argc, char* argv[])
LOG_PRINT_L0("Failed to get txid " << block_txid << " from db");
return 1;
}
if (!cryptonote::parse_and_validate_tx_base_from_blob(bd, tx2))
cryptonote::transaction tx;
if (!cryptonote::parse_and_validate_tx_base_from_blob(bd, tx))
{
LOG_PRINT_L0("Bad tx: " << block_txid);
return 1;
}
tx_data2 = ::tx_data_t(tx);
if (opt_cache_txes)
state.tx_cache.insert(std::make_pair(block_txid, tx2));
state.tx_cache.insert(std::make_pair(block_txid, tx_data2));
}
for (size_t out = 0; out < tx2.vout.size(); ++out)
for (size_t out = 0; out < tx_data2.vout.size(); ++out)
{
if (tx2.vout[out].target.type() == typeid(cryptonote::txout_to_key))
{
const auto &txout = boost::get<cryptonote::txout_to_key>(tx2.vout[out].target);
if (txout.key == od.pubkey)
if (tx_data2.vout[out] == od.pubkey)
{
found = true;
add_ancestry(state.ancestry, txid, get_ancestry(state.ancestry, block_txid));
@ -491,12 +566,6 @@ int main(int argc, char* argv[])
break;
}
}
else
{
LOG_PRINT_L0("Bad vout type in txid " << block_txid);
return 1;
}
}
}
if (!found)
{
@ -505,11 +574,6 @@ int main(int argc, char* argv[])
}
}
}
else
{
LOG_PRINT_L0("Bad vin type in txid " << txid);
return 1;
}
}
}
const size_t ancestry_size = get_ancestry(state.ancestry, txid).size();