void State::commitToMine(BlockChain const& _bc)
{
uncommitToMine();
// cnote << "Committing to mine on block" << m_previousBlock.hash.abridged();
#ifdef ETH_PARANOIA
commit();
cnote << "Pre-reward stateRoot:" << m_state.root();
#endif
m_lastTx = m_db;
Addresses uncleAddresses;
RLPStream unclesData;
unsigned unclesCount = 0;
if (m_previousBlock.number != 0)
{
// Find great-uncles (or second-cousins or whatever they are) - children of great-grandparents, great-great-grandparents... that were not already uncles in previous generations.
// cout << "Checking " << m_previousBlock.hash << ", parent=" << m_previousBlock.parentHash << endl;
set<h256> knownUncles = _bc.allUnclesFrom(m_currentBlock.parentHash);
auto p = m_previousBlock.parentHash;
for (unsigned gen = 0; gen < 6 && p != _bc.genesisHash(); ++gen, p = _bc.details(p).parent)
{
auto us = _bc.details(p).children;
assert(us.size() >= 1); // must be at least 1 child of our grandparent - it's our own parent!
for (auto const& u: us)
if (!knownUncles.count(u)) // ignore any uncles/mainline blocks that we know about.
{
BlockInfo ubi(_bc.block(u));
ubi.streamRLP(unclesData, WithNonce);
++unclesCount;
uncleAddresses.push_back(ubi.coinbaseAddress);
}
}
}
MemoryDB tm;
GenericTrieDB<MemoryDB> transactionsTrie(&tm);
transactionsTrie.init();
MemoryDB rm;
GenericTrieDB<MemoryDB> receiptsTrie(&rm);
receiptsTrie.init();
RLPStream txs;
txs.appendList(m_transactions.size());
for (unsigned i = 0; i < m_transactions.size(); ++i)
{
RLPStream k;
k << i;
RLPStream receiptrlp;
m_receipts[i].streamRLP(receiptrlp);
receiptsTrie.insert(&k.out(), &receiptrlp.out());
RLPStream txrlp;
m_transactions[i].streamRLP(txrlp);
transactionsTrie.insert(&k.out(), &txrlp.out());
txs.appendRaw(txrlp.out());
}
txs.swapOut(m_currentTxs);
RLPStream(unclesCount).appendRaw(unclesData.out(), unclesCount).swapOut(m_currentUncles);
m_currentBlock.transactionsRoot = transactionsTrie.root();
m_currentBlock.receiptsRoot = receiptsTrie.root();
m_currentBlock.logBloom = logBloom();
m_currentBlock.sha3Uncles = sha3(m_currentUncles);
// Apply rewards last of all.
applyRewards(uncleAddresses);
// Commit any and all changes to the trie that are in the cache, then update the state root accordingly.
commit();
// cnote << "Post-reward stateRoot:" << m_state.root().abridged();
// cnote << m_state;
// cnote << *this;
m_currentBlock.gasUsed = gasUsed();
m_currentBlock.stateRoot = m_state.root();
m_currentBlock.parentHash = m_previousBlock.hash;
}
u256 State::enact(bytesConstRef _block, BlockChain const& _bc, bool _checkNonce)
{
// m_currentBlock is assumed to be prepopulated and reset.
#if !ETH_RELEASE
BlockInfo bi(_block, _checkNonce);
assert(m_previousBlock.hash == bi.parentHash);
assert(m_currentBlock.parentHash == bi.parentHash);
assert(rootHash() == m_previousBlock.stateRoot);
#endif
if (m_currentBlock.parentHash != m_previousBlock.hash)
BOOST_THROW_EXCEPTION(InvalidParentHash());
// Populate m_currentBlock with the correct values.
m_currentBlock.populate(_block, _checkNonce);
m_currentBlock.verifyInternals(_block);
// cnote << "playback begins:" << m_state.root();
// cnote << m_state;
MemoryDB tm;
GenericTrieDB<MemoryDB> transactionsTrie(&tm);
transactionsTrie.init();
MemoryDB rm;
GenericTrieDB<MemoryDB> receiptsTrie(&rm);
receiptsTrie.init();
LastHashes lh = getLastHashes(_bc, (unsigned)m_previousBlock.number);
// All ok with the block generally. Play back the transactions now...
unsigned i = 0;
for (auto const& tr: RLP(_block)[1])
{
RLPStream k;
k << i;
transactionsTrie.insert(&k.out(), tr.data());
execute(lh, tr.data());
RLPStream receiptrlp;
m_receipts.back().streamRLP(receiptrlp);
receiptsTrie.insert(&k.out(), &receiptrlp.out());
++i;
}
if (transactionsTrie.root() != m_currentBlock.transactionsRoot)
{
cwarn << "Bad transactions state root!";
BOOST_THROW_EXCEPTION(InvalidTransactionsStateRoot());
}
if (receiptsTrie.root() != m_currentBlock.receiptsRoot)
{
cwarn << "Bad receipts state root.";
cwarn << "Block:" << toHex(_block);
cwarn << "Block RLP:" << RLP(_block);
cwarn << "Calculated: " << receiptsTrie.root();
for (unsigned j = 0; j < i; ++j)
{
RLPStream k;
k << j;
auto b = asBytes(receiptsTrie.at(&k.out()));
cwarn << j << ": ";
cwarn << "RLP: " << RLP(b);
cwarn << "Hex: " << toHex(b);
cwarn << TransactionReceipt(&b);
}
cwarn << "Recorded: " << m_currentBlock.receiptsRoot;
auto rs = _bc.receipts(m_currentBlock.hash);
for (unsigned j = 0; j < rs.receipts.size(); ++j)
{
auto b = rs.receipts[j].rlp();
cwarn << j << ": ";
cwarn << "RLP: " << RLP(b);
cwarn << "Hex: " << toHex(b);
cwarn << rs.receipts[j];
}
BOOST_THROW_EXCEPTION(InvalidReceiptsStateRoot());
}
if (m_currentBlock.logBloom != logBloom())
{
cwarn << "Bad log bloom!";
BOOST_THROW_EXCEPTION(InvalidLogBloom());
}
// Initialise total difficulty calculation.
u256 tdIncrease = m_currentBlock.difficulty;
// Check uncles & apply their rewards to state.
set<h256> nonces = { m_currentBlock.nonce };
Addresses rewarded;
set<h256> knownUncles = _bc.allUnclesFrom(m_currentBlock.parentHash);
for (auto const& i: RLP(_block)[2])
{
if (knownUncles.count(sha3(i.data())))
BOOST_THROW_EXCEPTION(UncleInChain(knownUncles, sha3(i.data()) ));
BlockInfo uncle = BlockInfo::fromHeader(i.data());
if (nonces.count(uncle.nonce))
BOOST_THROW_EXCEPTION(DuplicateUncleNonce());
BlockInfo uncleParent(_bc.block(uncle.parentHash));
if ((bigint)uncleParent.number < (bigint)m_currentBlock.number - 7)
BOOST_THROW_EXCEPTION(UncleTooOld());
uncle.verifyParent(uncleParent);
nonces.insert(uncle.nonce);
tdIncrease += uncle.difficulty;
rewarded.push_back(uncle.coinbaseAddress);
}
applyRewards(rewarded);
// Commit all cached state changes to the state trie.
commit();
// Hash the state trie and check against the state_root hash in m_currentBlock.
if (m_currentBlock.stateRoot != m_previousBlock.stateRoot && m_currentBlock.stateRoot != rootHash())
{
cwarn << "Bad state root!";
cnote << "Given to be:" << m_currentBlock.stateRoot;
cnote << TrieDB<Address, OverlayDB>(&m_db, m_currentBlock.stateRoot);
cnote << "Calculated to be:" << rootHash();
cnote << m_state;
cnote << *this;
// Rollback the trie.
m_db.rollback();
BOOST_THROW_EXCEPTION(InvalidStateRoot());
}
if (m_currentBlock.gasUsed != gasUsed())
{
// Rollback the trie.
m_db.rollback();
BOOST_THROW_EXCEPTION(InvalidGasUsed() << RequirementError(bigint(gasUsed()), bigint(m_currentBlock.gasUsed)));
}
return tdIncrease;
}