CBlockLocator CChain::GetLocator(const CBlockIndex *pindex) const {
int nStep = 1;
std::vector<uint256> vHave;
vHave.reserve(32);
if (!pindex)
pindex = Tip();
while (pindex) {
vHave.push_back(pindex->GetBlockHash());
// Stop when we have added the genesis block.
if (pindex->nHeight == 0)
break;
// Exponentially larger steps back, plus the genesis block.
int nHeight = std::max(pindex->nHeight - nStep, 0);
if (Contains(pindex)) {
// Use O(1) CChain index if possible.
pindex = (*this)[nHeight];
} else {
// Otherwise, use O(log n) skiplist.
pindex = pindex->GetAncestor(nHeight);
}
if (vHave.size() > 10)
nStep *= 2;
}
return CBlockLocator(vHave);
}
bool Finalise()
{
LogPrintf("Finalise()\n");
StopRPCThreads();
ShutdownRPCMining();
SecureMsgShutdown();
mempool.AddTransactionsUpdated(1);
if (pwalletMain)
bitdb.Flush(false);
StopNode();
{
LOCK(cs_main);
if (pwalletMain)
pwalletMain->SetBestChain(CBlockLocator(pindexBest));
}
if (pwalletMain)
bitdb.Flush(true);
UnregisterWallet(pwalletMain);
delete pwalletMain;
pwalletMain = NULL;
finaliseRingSigs();
if (nNodeMode == NT_FULL)
{
std::map<uint256, CBlockIndex*>::iterator it;
for (it = mapBlockIndex.begin(); it != mapBlockIndex.end(); ++it)
{
delete it->second;
};
mapBlockIndex.clear();
if (fDebug)
LogPrintf("mapBlockIndex cleared.\n");
} else
{
std::map<uint256, CBlockThinIndex*>::iterator it;
for (it = mapBlockThinIndex.begin(); it != mapBlockThinIndex.end(); ++it)
{
delete it->second;
};
mapBlockThinIndex.clear();
if (fDebug)
LogPrintf("mapBlockThinIndex cleared.\n");
};
CTxDB().Close();
fs::remove(GetPidFile());
return true;
}
void CNode::PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd)
{
// Filter out duplicate requests
if (pindexBegin == pindexLastGetBlocksBegin && hashEnd == hashLastGetBlocksEnd)
return;
pindexLastGetBlocksBegin = pindexBegin;
hashLastGetBlocksEnd = hashEnd;
PushMessage("getblocks", CBlockLocator(pindexBegin), hashEnd);
}
bool CWalletDB::WriteBestBlock(const CBlockLocator& locator)
{
WriteIC(std::string("bestblock"), CBlockLocator()); // Write empty block locator so versions that require a merkle branch automatically rescan
return WriteIC(std::string("bestblock_nomerkle"), locator);
}
