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https://github.com/bitcoin/bitcoin.git
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Move BlockManager to node/blockstorage
Can be reviewed with --color-moved=dimmed-zebra
This commit is contained in:
MarcoFalke
parent
8b5a4de904
commit
fade2a44f4
@ -12,6 +12,7 @@
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#include <fs.h>
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#include <hash.h>
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#include <pow.h>
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#include <reverse_iterator.h>
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#include <shutdown.h>
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#include <signet.h>
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#include <streams.h>
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@ -47,6 +48,374 @@ static FILE* OpenUndoFile(const FlatFilePos& pos, bool fReadOnly = false);
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static FlatFileSeq BlockFileSeq();
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static FlatFileSeq UndoFileSeq();
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CBlockIndex* BlockManager::LookupBlockIndex(const uint256& hash) const
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{
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AssertLockHeld(cs_main);
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BlockMap::const_iterator it = m_block_index.find(hash);
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return it == m_block_index.end() ? nullptr : it->second;
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}
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CBlockIndex* BlockManager::AddToBlockIndex(const CBlockHeader& block)
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{
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AssertLockHeld(cs_main);
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// Check for duplicate
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uint256 hash = block.GetHash();
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BlockMap::iterator it = m_block_index.find(hash);
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if (it != m_block_index.end())
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return it->second;
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// Construct new block index object
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CBlockIndex* pindexNew = new CBlockIndex(block);
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// We assign the sequence id to blocks only when the full data is available,
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// to avoid miners withholding blocks but broadcasting headers, to get a
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// competitive advantage.
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pindexNew->nSequenceId = 0;
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BlockMap::iterator mi = m_block_index.insert(std::make_pair(hash, pindexNew)).first;
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pindexNew->phashBlock = &((*mi).first);
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BlockMap::iterator miPrev = m_block_index.find(block.hashPrevBlock);
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if (miPrev != m_block_index.end())
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{
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pindexNew->pprev = (*miPrev).second;
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pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
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pindexNew->BuildSkip();
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}
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pindexNew->nTimeMax = (pindexNew->pprev ? std::max(pindexNew->pprev->nTimeMax, pindexNew->nTime) : pindexNew->nTime);
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pindexNew->nChainWork = (pindexNew->pprev ? pindexNew->pprev->nChainWork : 0) + GetBlockProof(*pindexNew);
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pindexNew->RaiseValidity(BLOCK_VALID_TREE);
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if (pindexBestHeader == nullptr || pindexBestHeader->nChainWork < pindexNew->nChainWork)
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pindexBestHeader = pindexNew;
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setDirtyBlockIndex.insert(pindexNew);
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return pindexNew;
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}
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void BlockManager::PruneOneBlockFile(const int fileNumber)
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{
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AssertLockHeld(cs_main);
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LOCK(cs_LastBlockFile);
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for (const auto& entry : m_block_index) {
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CBlockIndex* pindex = entry.second;
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if (pindex->nFile == fileNumber) {
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pindex->nStatus &= ~BLOCK_HAVE_DATA;
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pindex->nStatus &= ~BLOCK_HAVE_UNDO;
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pindex->nFile = 0;
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pindex->nDataPos = 0;
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pindex->nUndoPos = 0;
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setDirtyBlockIndex.insert(pindex);
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// Prune from m_blocks_unlinked -- any block we prune would have
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// to be downloaded again in order to consider its chain, at which
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// point it would be considered as a candidate for
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// m_blocks_unlinked or setBlockIndexCandidates.
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auto range = m_blocks_unlinked.equal_range(pindex->pprev);
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while (range.first != range.second) {
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std::multimap<CBlockIndex *, CBlockIndex *>::iterator _it = range.first;
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range.first++;
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if (_it->second == pindex) {
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m_blocks_unlinked.erase(_it);
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}
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}
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}
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}
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vinfoBlockFile[fileNumber].SetNull();
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setDirtyFileInfo.insert(fileNumber);
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}
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void BlockManager::FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight, int chain_tip_height)
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{
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assert(fPruneMode && nManualPruneHeight > 0);
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LOCK2(cs_main, cs_LastBlockFile);
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if (chain_tip_height < 0) {
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return;
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}
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// last block to prune is the lesser of (user-specified height, MIN_BLOCKS_TO_KEEP from the tip)
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unsigned int nLastBlockWeCanPrune = std::min((unsigned)nManualPruneHeight, chain_tip_height - MIN_BLOCKS_TO_KEEP);
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int count = 0;
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for (int fileNumber = 0; fileNumber < nLastBlockFile; fileNumber++) {
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if (vinfoBlockFile[fileNumber].nSize == 0 || vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) {
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continue;
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}
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PruneOneBlockFile(fileNumber);
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setFilesToPrune.insert(fileNumber);
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count++;
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}
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LogPrintf("Prune (Manual): prune_height=%d removed %d blk/rev pairs\n", nLastBlockWeCanPrune, count);
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}
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void BlockManager::FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight, int chain_tip_height, int prune_height, bool is_ibd)
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{
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LOCK2(cs_main, cs_LastBlockFile);
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if (chain_tip_height < 0 || nPruneTarget == 0) {
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return;
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}
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if ((uint64_t)chain_tip_height <= nPruneAfterHeight) {
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return;
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}
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unsigned int nLastBlockWeCanPrune{(unsigned)std::min(prune_height, chain_tip_height - static_cast<int>(MIN_BLOCKS_TO_KEEP))};
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uint64_t nCurrentUsage = CalculateCurrentUsage();
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// We don't check to prune until after we've allocated new space for files
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// So we should leave a buffer under our target to account for another allocation
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// before the next pruning.
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uint64_t nBuffer = BLOCKFILE_CHUNK_SIZE + UNDOFILE_CHUNK_SIZE;
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uint64_t nBytesToPrune;
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int count = 0;
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if (nCurrentUsage + nBuffer >= nPruneTarget) {
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// On a prune event, the chainstate DB is flushed.
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// To avoid excessive prune events negating the benefit of high dbcache
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// values, we should not prune too rapidly.
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// So when pruning in IBD, increase the buffer a bit to avoid a re-prune too soon.
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if (is_ibd) {
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// Since this is only relevant during IBD, we use a fixed 10%
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nBuffer += nPruneTarget / 10;
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}
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for (int fileNumber = 0; fileNumber < nLastBlockFile; fileNumber++) {
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nBytesToPrune = vinfoBlockFile[fileNumber].nSize + vinfoBlockFile[fileNumber].nUndoSize;
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if (vinfoBlockFile[fileNumber].nSize == 0) {
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continue;
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}
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if (nCurrentUsage + nBuffer < nPruneTarget) { // are we below our target?
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break;
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}
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// don't prune files that could have a block within MIN_BLOCKS_TO_KEEP of the main chain's tip but keep scanning
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if (vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) {
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continue;
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}
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PruneOneBlockFile(fileNumber);
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// Queue up the files for removal
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setFilesToPrune.insert(fileNumber);
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nCurrentUsage -= nBytesToPrune;
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count++;
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}
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}
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LogPrint(BCLog::PRUNE, "Prune: target=%dMiB actual=%dMiB diff=%dMiB max_prune_height=%d removed %d blk/rev pairs\n",
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nPruneTarget/1024/1024, nCurrentUsage/1024/1024,
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((int64_t)nPruneTarget - (int64_t)nCurrentUsage)/1024/1024,
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nLastBlockWeCanPrune, count);
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}
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CBlockIndex * BlockManager::InsertBlockIndex(const uint256& hash)
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{
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AssertLockHeld(cs_main);
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if (hash.IsNull())
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return nullptr;
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// Return existing
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BlockMap::iterator mi = m_block_index.find(hash);
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if (mi != m_block_index.end())
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return (*mi).second;
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// Create new
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CBlockIndex* pindexNew = new CBlockIndex();
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mi = m_block_index.insert(std::make_pair(hash, pindexNew)).first;
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pindexNew->phashBlock = &((*mi).first);
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return pindexNew;
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}
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bool BlockManager::LoadBlockIndex(
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const Consensus::Params& consensus_params,
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ChainstateManager& chainman)
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{
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if (!m_block_tree_db->LoadBlockIndexGuts(consensus_params, [this](const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return this->InsertBlockIndex(hash); })) {
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return false;
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}
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// Calculate nChainWork
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std::vector<std::pair<int, CBlockIndex*> > vSortedByHeight;
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vSortedByHeight.reserve(m_block_index.size());
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for (const std::pair<const uint256, CBlockIndex*>& item : m_block_index)
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{
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CBlockIndex* pindex = item.second;
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vSortedByHeight.push_back(std::make_pair(pindex->nHeight, pindex));
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}
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sort(vSortedByHeight.begin(), vSortedByHeight.end());
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// Find start of assumed-valid region.
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int first_assumed_valid_height = std::numeric_limits<int>::max();
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for (const auto& [height, block] : vSortedByHeight) {
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if (block->IsAssumedValid()) {
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auto chainstates = chainman.GetAll();
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// If we encounter an assumed-valid block index entry, ensure that we have
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// one chainstate that tolerates assumed-valid entries and another that does
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// not (i.e. the background validation chainstate), since assumed-valid
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// entries should always be pending validation by a fully-validated chainstate.
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auto any_chain = [&](auto fnc) { return std::any_of(chainstates.cbegin(), chainstates.cend(), fnc); };
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assert(any_chain([](auto chainstate) { return chainstate->reliesOnAssumedValid(); }));
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assert(any_chain([](auto chainstate) { return !chainstate->reliesOnAssumedValid(); }));
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first_assumed_valid_height = height;
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break;
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}
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}
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for (const std::pair<int, CBlockIndex*>& item : vSortedByHeight)
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{
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if (ShutdownRequested()) return false;
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CBlockIndex* pindex = item.second;
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pindex->nChainWork = (pindex->pprev ? pindex->pprev->nChainWork : 0) + GetBlockProof(*pindex);
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pindex->nTimeMax = (pindex->pprev ? std::max(pindex->pprev->nTimeMax, pindex->nTime) : pindex->nTime);
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// We can link the chain of blocks for which we've received transactions at some point, or
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// blocks that are assumed-valid on the basis of snapshot load (see
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// PopulateAndValidateSnapshot()).
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// Pruned nodes may have deleted the block.
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if (pindex->nTx > 0) {
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if (pindex->pprev) {
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if (pindex->pprev->nChainTx > 0) {
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pindex->nChainTx = pindex->pprev->nChainTx + pindex->nTx;
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} else {
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pindex->nChainTx = 0;
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m_blocks_unlinked.insert(std::make_pair(pindex->pprev, pindex));
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}
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} else {
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pindex->nChainTx = pindex->nTx;
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}
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}
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if (!(pindex->nStatus & BLOCK_FAILED_MASK) && pindex->pprev && (pindex->pprev->nStatus & BLOCK_FAILED_MASK)) {
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pindex->nStatus |= BLOCK_FAILED_CHILD;
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setDirtyBlockIndex.insert(pindex);
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}
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if (pindex->IsAssumedValid() ||
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(pindex->IsValid(BLOCK_VALID_TRANSACTIONS) &&
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(pindex->HaveTxsDownloaded() || pindex->pprev == nullptr))) {
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// Fill each chainstate's block candidate set. Only add assumed-valid
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// blocks to the tip candidate set if the chainstate is allowed to rely on
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// assumed-valid blocks.
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//
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// If all setBlockIndexCandidates contained the assumed-valid blocks, the
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// background chainstate's ActivateBestChain() call would add assumed-valid
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// blocks to the chain (based on how FindMostWorkChain() works). Obviously
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// we don't want this since the purpose of the background validation chain
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// is to validate assued-valid blocks.
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//
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// Note: This is considering all blocks whose height is greater or equal to
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// the first assumed-valid block to be assumed-valid blocks, and excluding
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// them from the background chainstate's setBlockIndexCandidates set. This
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// does mean that some blocks which are not technically assumed-valid
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// (later blocks on a fork beginning before the first assumed-valid block)
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// might not get added to the the background chainstate, but this is ok,
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// because they will still be attached to the active chainstate if they
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// actually contain more work.
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//
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// Instad of this height-based approach, an earlier attempt was made at
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// detecting "holistically" whether the block index under consideration
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// relied on an assumed-valid ancestor, but this proved to be too slow to
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// be practical.
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for (CChainState* chainstate : chainman.GetAll()) {
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if (chainstate->reliesOnAssumedValid() ||
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pindex->nHeight < first_assumed_valid_height) {
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chainstate->setBlockIndexCandidates.insert(pindex);
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}
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}
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}
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if (pindex->nStatus & BLOCK_FAILED_MASK && (!chainman.m_best_invalid || pindex->nChainWork > chainman.m_best_invalid->nChainWork)) {
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chainman.m_best_invalid = pindex;
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}
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if (pindex->pprev)
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pindex->BuildSkip();
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if (pindex->IsValid(BLOCK_VALID_TREE) && (pindexBestHeader == nullptr || CBlockIndexWorkComparator()(pindexBestHeader, pindex)))
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pindexBestHeader = pindex;
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}
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return true;
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}
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void BlockManager::Unload() {
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m_blocks_unlinked.clear();
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for (const BlockMap::value_type& entry : m_block_index) {
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delete entry.second;
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}
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m_block_index.clear();
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}
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bool BlockManager::LoadBlockIndexDB(ChainstateManager& chainman)
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{
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if (!LoadBlockIndex(::Params().GetConsensus(), chainman)) {
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return false;
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}
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// Load block file info
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m_block_tree_db->ReadLastBlockFile(nLastBlockFile);
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vinfoBlockFile.resize(nLastBlockFile + 1);
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LogPrintf("%s: last block file = %i\n", __func__, nLastBlockFile);
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for (int nFile = 0; nFile <= nLastBlockFile; nFile++) {
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m_block_tree_db->ReadBlockFileInfo(nFile, vinfoBlockFile[nFile]);
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}
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LogPrintf("%s: last block file info: %s\n", __func__, vinfoBlockFile[nLastBlockFile].ToString());
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for (int nFile = nLastBlockFile + 1; true; nFile++) {
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CBlockFileInfo info;
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if (m_block_tree_db->ReadBlockFileInfo(nFile, info)) {
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vinfoBlockFile.push_back(info);
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} else {
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break;
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}
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}
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// Check presence of blk files
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LogPrintf("Checking all blk files are present...\n");
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std::set<int> setBlkDataFiles;
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for (const std::pair<const uint256, CBlockIndex*>& item : m_block_index) {
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CBlockIndex* pindex = item.second;
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if (pindex->nStatus & BLOCK_HAVE_DATA) {
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setBlkDataFiles.insert(pindex->nFile);
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}
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}
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for (std::set<int>::iterator it = setBlkDataFiles.begin(); it != setBlkDataFiles.end(); it++)
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{
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FlatFilePos pos(*it, 0);
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if (CAutoFile(OpenBlockFile(pos, true), SER_DISK, CLIENT_VERSION).IsNull()) {
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return false;
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}
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}
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// Check whether we have ever pruned block & undo files
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m_block_tree_db->ReadFlag("prunedblockfiles", fHavePruned);
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if (fHavePruned)
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LogPrintf("LoadBlockIndexDB(): Block files have previously been pruned\n");
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// Check whether we need to continue reindexing
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bool fReindexing = false;
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m_block_tree_db->ReadReindexing(fReindexing);
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if(fReindexing) fReindex = true;
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return true;
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}
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CBlockIndex* BlockManager::GetLastCheckpoint(const CCheckpointData& data)
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{
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const MapCheckpoints& checkpoints = data.mapCheckpoints;
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for (const MapCheckpoints::value_type& i : reverse_iterate(checkpoints))
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{
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const uint256& hash = i.second;
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CBlockIndex* pindex = LookupBlockIndex(hash);
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if (pindex) {
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return pindex;
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}
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}
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return nullptr;
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}
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bool IsBlockPruned(const CBlockIndex* pblockindex)
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{
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return (fHavePruned && !(pblockindex->nStatus & BLOCK_HAVE_DATA) && pblockindex->nTx > 0);
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@ -7,6 +7,7 @@
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#include <fs.h>
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#include <protocol.h> // For CMessageHeader::MessageStartChars
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#include <txdb.h>
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#include <atomic>
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#include <cstdint>
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@ -20,7 +21,9 @@ class CBlockIndex;
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class CBlockUndo;
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class CChain;
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class CChainParams;
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class CChainState;
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class ChainstateManager;
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struct CCheckpointData;
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struct FlatFilePos;
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namespace Consensus {
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struct Params;
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@ -45,6 +48,87 @@ extern bool fPruneMode;
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/** Number of MiB of block files that we're trying to stay below. */
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extern uint64_t nPruneTarget;
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typedef std::unordered_map<uint256, CBlockIndex*, BlockHasher> BlockMap;
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struct CBlockIndexWorkComparator
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{
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bool operator()(const CBlockIndex *pa, const CBlockIndex *pb) const;
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};
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/**
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* Maintains a tree of blocks (stored in `m_block_index`) which is consulted
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* to determine where the most-work tip is.
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*
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* This data is used mostly in `CChainState` - information about, e.g.,
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* candidate tips is not maintained here.
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*/
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class BlockManager
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{
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friend CChainState;
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private:
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/* Calculate the block/rev files to delete based on height specified by user with RPC command pruneblockchain */
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void FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight, int chain_tip_height);
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/**
|
||||
* Prune block and undo files (blk???.dat and rev???.dat) so that the disk space used is less than a user-defined target.
|
||||
* The user sets the target (in MB) on the command line or in config file. This will be run on startup and whenever new
|
||||
* space is allocated in a block or undo file, staying below the target. Changing back to unpruned requires a reindex
|
||||
* (which in this case means the blockchain must be re-downloaded.)
|
||||
*
|
||||
* Pruning functions are called from FlushStateToDisk when the global fCheckForPruning flag has been set.
|
||||
* Block and undo files are deleted in lock-step (when blk00003.dat is deleted, so is rev00003.dat.)
|
||||
* Pruning cannot take place until the longest chain is at least a certain length (100000 on mainnet, 1000 on testnet, 1000 on regtest).
|
||||
* Pruning will never delete a block within a defined distance (currently 288) from the active chain's tip.
|
||||
* The block index is updated by unsetting HAVE_DATA and HAVE_UNDO for any blocks that were stored in the deleted files.
|
||||
* A db flag records the fact that at least some block files have been pruned.
|
||||
*
|
||||
* @param[out] setFilesToPrune The set of file indices that can be unlinked will be returned
|
||||
*/
|
||||
void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight, int chain_tip_height, int prune_height, bool is_ibd);
|
||||
|
||||
public:
|
||||
BlockMap m_block_index GUARDED_BY(cs_main);
|
||||
|
||||
/**
|
||||
* All pairs A->B, where A (or one of its ancestors) misses transactions, but B has transactions.
|
||||
* Pruned nodes may have entries where B is missing data.
|
||||
*/
|
||||
std::multimap<CBlockIndex*, CBlockIndex*> m_blocks_unlinked;
|
||||
|
||||
std::unique_ptr<CBlockTreeDB> m_block_tree_db GUARDED_BY(::cs_main);
|
||||
|
||||
bool LoadBlockIndexDB(ChainstateManager& chainman) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
|
||||
|
||||
/**
|
||||
* Load the blocktree off disk and into memory. Populate certain metadata
|
||||
* per index entry (nStatus, nChainWork, nTimeMax, etc.) as well as peripheral
|
||||
* collections like setDirtyBlockIndex.
|
||||
*/
|
||||
bool LoadBlockIndex(
|
||||
const Consensus::Params& consensus_params,
|
||||
ChainstateManager& chainman) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
/** Clear all data members. */
|
||||
void Unload() EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
CBlockIndex* AddToBlockIndex(const CBlockHeader& block) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
/** Create a new block index entry for a given block hash */
|
||||
CBlockIndex* InsertBlockIndex(const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
//! Mark one block file as pruned (modify associated database entries)
|
||||
void PruneOneBlockFile(const int fileNumber) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
CBlockIndex* LookupBlockIndex(const uint256& hash) const EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
//! Returns last CBlockIndex* that is a checkpoint
|
||||
CBlockIndex* GetLastCheckpoint(const CCheckpointData& data) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
~BlockManager() {
|
||||
Unload();
|
||||
}
|
||||
};
|
||||
|
||||
//! Check whether the block associated with this index entry is pruned or not.
|
||||
bool IsBlockPruned(const CBlockIndex* pblockindex);
|
||||
|
||||
|
||||
@ -143,13 +143,6 @@ extern std::set<int> setDirtyFileInfo;
|
||||
void FlushBlockFile(bool fFinalize = false, bool finalize_undo = false);
|
||||
// ... TODO move fully to blockstorage
|
||||
|
||||
CBlockIndex* BlockManager::LookupBlockIndex(const uint256& hash) const
|
||||
{
|
||||
AssertLockHeld(cs_main);
|
||||
BlockMap::const_iterator it = m_block_index.find(hash);
|
||||
return it == m_block_index.end() ? nullptr : it->second;
|
||||
}
|
||||
|
||||
CBlockIndex* CChainState::FindForkInGlobalIndex(const CBlockLocator& locator) const
|
||||
{
|
||||
AssertLockHeld(cs_main);
|
||||
@ -3123,42 +3116,6 @@ void CChainState::ResetBlockFailureFlags(CBlockIndex *pindex) {
|
||||
}
|
||||
}
|
||||
|
||||
CBlockIndex* BlockManager::AddToBlockIndex(const CBlockHeader& block)
|
||||
{
|
||||
AssertLockHeld(cs_main);
|
||||
|
||||
// Check for duplicate
|
||||
uint256 hash = block.GetHash();
|
||||
BlockMap::iterator it = m_block_index.find(hash);
|
||||
if (it != m_block_index.end())
|
||||
return it->second;
|
||||
|
||||
// Construct new block index object
|
||||
CBlockIndex* pindexNew = new CBlockIndex(block);
|
||||
// We assign the sequence id to blocks only when the full data is available,
|
||||
// to avoid miners withholding blocks but broadcasting headers, to get a
|
||||
// competitive advantage.
|
||||
pindexNew->nSequenceId = 0;
|
||||
BlockMap::iterator mi = m_block_index.insert(std::make_pair(hash, pindexNew)).first;
|
||||
pindexNew->phashBlock = &((*mi).first);
|
||||
BlockMap::iterator miPrev = m_block_index.find(block.hashPrevBlock);
|
||||
if (miPrev != m_block_index.end())
|
||||
{
|
||||
pindexNew->pprev = (*miPrev).second;
|
||||
pindexNew->nHeight = pindexNew->pprev->nHeight + 1;
|
||||
pindexNew->BuildSkip();
|
||||
}
|
||||
pindexNew->nTimeMax = (pindexNew->pprev ? std::max(pindexNew->pprev->nTimeMax, pindexNew->nTime) : pindexNew->nTime);
|
||||
pindexNew->nChainWork = (pindexNew->pprev ? pindexNew->pprev->nChainWork : 0) + GetBlockProof(*pindexNew);
|
||||
pindexNew->RaiseValidity(BLOCK_VALID_TREE);
|
||||
if (pindexBestHeader == nullptr || pindexBestHeader->nChainWork < pindexNew->nChainWork)
|
||||
pindexBestHeader = pindexNew;
|
||||
|
||||
setDirtyBlockIndex.insert(pindexNew);
|
||||
|
||||
return pindexNew;
|
||||
}
|
||||
|
||||
/** Mark a block as having its data received and checked (up to BLOCK_VALID_TRANSACTIONS). */
|
||||
void CChainState::ReceivedBlockTransactions(const CBlock& block, CBlockIndex* pindexNew, const FlatFilePos& pos)
|
||||
{
|
||||
@ -3325,21 +3282,6 @@ std::vector<unsigned char> GenerateCoinbaseCommitment(CBlock& block, const CBloc
|
||||
return commitment;
|
||||
}
|
||||
|
||||
CBlockIndex* BlockManager::GetLastCheckpoint(const CCheckpointData& data)
|
||||
{
|
||||
const MapCheckpoints& checkpoints = data.mapCheckpoints;
|
||||
|
||||
for (const MapCheckpoints::value_type& i : reverse_iterate(checkpoints))
|
||||
{
|
||||
const uint256& hash = i.second;
|
||||
CBlockIndex* pindex = LookupBlockIndex(hash);
|
||||
if (pindex) {
|
||||
return pindex;
|
||||
}
|
||||
}
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
/** Context-dependent validity checks.
|
||||
* By "context", we mean only the previous block headers, but not the UTXO
|
||||
* set; UTXO-related validity checks are done in ConnectBlock().
|
||||
@ -3761,67 +3703,6 @@ bool TestBlockValidity(BlockValidationState& state,
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* BLOCK PRUNING CODE
|
||||
*/
|
||||
|
||||
void BlockManager::PruneOneBlockFile(const int fileNumber)
|
||||
{
|
||||
AssertLockHeld(cs_main);
|
||||
LOCK(cs_LastBlockFile);
|
||||
|
||||
for (const auto& entry : m_block_index) {
|
||||
CBlockIndex* pindex = entry.second;
|
||||
if (pindex->nFile == fileNumber) {
|
||||
pindex->nStatus &= ~BLOCK_HAVE_DATA;
|
||||
pindex->nStatus &= ~BLOCK_HAVE_UNDO;
|
||||
pindex->nFile = 0;
|
||||
pindex->nDataPos = 0;
|
||||
pindex->nUndoPos = 0;
|
||||
setDirtyBlockIndex.insert(pindex);
|
||||
|
||||
// Prune from m_blocks_unlinked -- any block we prune would have
|
||||
// to be downloaded again in order to consider its chain, at which
|
||||
// point it would be considered as a candidate for
|
||||
// m_blocks_unlinked or setBlockIndexCandidates.
|
||||
auto range = m_blocks_unlinked.equal_range(pindex->pprev);
|
||||
while (range.first != range.second) {
|
||||
std::multimap<CBlockIndex *, CBlockIndex *>::iterator _it = range.first;
|
||||
range.first++;
|
||||
if (_it->second == pindex) {
|
||||
m_blocks_unlinked.erase(_it);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
vinfoBlockFile[fileNumber].SetNull();
|
||||
setDirtyFileInfo.insert(fileNumber);
|
||||
}
|
||||
|
||||
void BlockManager::FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight, int chain_tip_height)
|
||||
{
|
||||
assert(fPruneMode && nManualPruneHeight > 0);
|
||||
|
||||
LOCK2(cs_main, cs_LastBlockFile);
|
||||
if (chain_tip_height < 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
// last block to prune is the lesser of (user-specified height, MIN_BLOCKS_TO_KEEP from the tip)
|
||||
unsigned int nLastBlockWeCanPrune = std::min((unsigned)nManualPruneHeight, chain_tip_height - MIN_BLOCKS_TO_KEEP);
|
||||
int count = 0;
|
||||
for (int fileNumber = 0; fileNumber < nLastBlockFile; fileNumber++) {
|
||||
if (vinfoBlockFile[fileNumber].nSize == 0 || vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) {
|
||||
continue;
|
||||
}
|
||||
PruneOneBlockFile(fileNumber);
|
||||
setFilesToPrune.insert(fileNumber);
|
||||
count++;
|
||||
}
|
||||
LogPrintf("Prune (Manual): prune_height=%d removed %d blk/rev pairs\n", nLastBlockWeCanPrune, count);
|
||||
}
|
||||
|
||||
/* This function is called from the RPC code for pruneblockchain */
|
||||
void PruneBlockFilesManual(CChainState& active_chainstate, int nManualPruneHeight)
|
||||
{
|
||||
@ -3832,259 +3713,6 @@ void PruneBlockFilesManual(CChainState& active_chainstate, int nManualPruneHeigh
|
||||
}
|
||||
}
|
||||
|
||||
void BlockManager::FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight, int chain_tip_height, int prune_height, bool is_ibd)
|
||||
{
|
||||
LOCK2(cs_main, cs_LastBlockFile);
|
||||
if (chain_tip_height < 0 || nPruneTarget == 0) {
|
||||
return;
|
||||
}
|
||||
if ((uint64_t)chain_tip_height <= nPruneAfterHeight) {
|
||||
return;
|
||||
}
|
||||
|
||||
unsigned int nLastBlockWeCanPrune{(unsigned)std::min(prune_height, chain_tip_height - static_cast<int>(MIN_BLOCKS_TO_KEEP))};
|
||||
uint64_t nCurrentUsage = CalculateCurrentUsage();
|
||||
// We don't check to prune until after we've allocated new space for files
|
||||
// So we should leave a buffer under our target to account for another allocation
|
||||
// before the next pruning.
|
||||
uint64_t nBuffer = BLOCKFILE_CHUNK_SIZE + UNDOFILE_CHUNK_SIZE;
|
||||
uint64_t nBytesToPrune;
|
||||
int count = 0;
|
||||
|
||||
if (nCurrentUsage + nBuffer >= nPruneTarget) {
|
||||
// On a prune event, the chainstate DB is flushed.
|
||||
// To avoid excessive prune events negating the benefit of high dbcache
|
||||
// values, we should not prune too rapidly.
|
||||
// So when pruning in IBD, increase the buffer a bit to avoid a re-prune too soon.
|
||||
if (is_ibd) {
|
||||
// Since this is only relevant during IBD, we use a fixed 10%
|
||||
nBuffer += nPruneTarget / 10;
|
||||
}
|
||||
|
||||
for (int fileNumber = 0; fileNumber < nLastBlockFile; fileNumber++) {
|
||||
nBytesToPrune = vinfoBlockFile[fileNumber].nSize + vinfoBlockFile[fileNumber].nUndoSize;
|
||||
|
||||
if (vinfoBlockFile[fileNumber].nSize == 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
if (nCurrentUsage + nBuffer < nPruneTarget) { // are we below our target?
|
||||
break;
|
||||
}
|
||||
|
||||
// don't prune files that could have a block within MIN_BLOCKS_TO_KEEP of the main chain's tip but keep scanning
|
||||
if (vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) {
|
||||
continue;
|
||||
}
|
||||
|
||||
PruneOneBlockFile(fileNumber);
|
||||
// Queue up the files for removal
|
||||
setFilesToPrune.insert(fileNumber);
|
||||
nCurrentUsage -= nBytesToPrune;
|
||||
count++;
|
||||
}
|
||||
}
|
||||
|
||||
LogPrint(BCLog::PRUNE, "Prune: target=%dMiB actual=%dMiB diff=%dMiB max_prune_height=%d removed %d blk/rev pairs\n",
|
||||
nPruneTarget/1024/1024, nCurrentUsage/1024/1024,
|
||||
((int64_t)nPruneTarget - (int64_t)nCurrentUsage)/1024/1024,
|
||||
nLastBlockWeCanPrune, count);
|
||||
}
|
||||
|
||||
CBlockIndex * BlockManager::InsertBlockIndex(const uint256& hash)
|
||||
{
|
||||
AssertLockHeld(cs_main);
|
||||
|
||||
if (hash.IsNull())
|
||||
return nullptr;
|
||||
|
||||
// Return existing
|
||||
BlockMap::iterator mi = m_block_index.find(hash);
|
||||
if (mi != m_block_index.end())
|
||||
return (*mi).second;
|
||||
|
||||
// Create new
|
||||
CBlockIndex* pindexNew = new CBlockIndex();
|
||||
mi = m_block_index.insert(std::make_pair(hash, pindexNew)).first;
|
||||
pindexNew->phashBlock = &((*mi).first);
|
||||
|
||||
return pindexNew;
|
||||
}
|
||||
|
||||
bool BlockManager::LoadBlockIndex(
|
||||
const Consensus::Params& consensus_params,
|
||||
ChainstateManager& chainman)
|
||||
{
|
||||
if (!m_block_tree_db->LoadBlockIndexGuts(consensus_params, [this](const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main) { return this->InsertBlockIndex(hash); })) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Calculate nChainWork
|
||||
std::vector<std::pair<int, CBlockIndex*> > vSortedByHeight;
|
||||
vSortedByHeight.reserve(m_block_index.size());
|
||||
for (const std::pair<const uint256, CBlockIndex*>& item : m_block_index)
|
||||
{
|
||||
CBlockIndex* pindex = item.second;
|
||||
vSortedByHeight.push_back(std::make_pair(pindex->nHeight, pindex));
|
||||
}
|
||||
sort(vSortedByHeight.begin(), vSortedByHeight.end());
|
||||
|
||||
// Find start of assumed-valid region.
|
||||
int first_assumed_valid_height = std::numeric_limits<int>::max();
|
||||
|
||||
for (const auto& [height, block] : vSortedByHeight) {
|
||||
if (block->IsAssumedValid()) {
|
||||
auto chainstates = chainman.GetAll();
|
||||
|
||||
// If we encounter an assumed-valid block index entry, ensure that we have
|
||||
// one chainstate that tolerates assumed-valid entries and another that does
|
||||
// not (i.e. the background validation chainstate), since assumed-valid
|
||||
// entries should always be pending validation by a fully-validated chainstate.
|
||||
auto any_chain = [&](auto fnc) { return std::any_of(chainstates.cbegin(), chainstates.cend(), fnc); };
|
||||
assert(any_chain([](auto chainstate) { return chainstate->reliesOnAssumedValid(); }));
|
||||
assert(any_chain([](auto chainstate) { return !chainstate->reliesOnAssumedValid(); }));
|
||||
|
||||
first_assumed_valid_height = height;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
for (const std::pair<int, CBlockIndex*>& item : vSortedByHeight)
|
||||
{
|
||||
if (ShutdownRequested()) return false;
|
||||
CBlockIndex* pindex = item.second;
|
||||
pindex->nChainWork = (pindex->pprev ? pindex->pprev->nChainWork : 0) + GetBlockProof(*pindex);
|
||||
pindex->nTimeMax = (pindex->pprev ? std::max(pindex->pprev->nTimeMax, pindex->nTime) : pindex->nTime);
|
||||
|
||||
// We can link the chain of blocks for which we've received transactions at some point, or
|
||||
// blocks that are assumed-valid on the basis of snapshot load (see
|
||||
// PopulateAndValidateSnapshot()).
|
||||
// Pruned nodes may have deleted the block.
|
||||
if (pindex->nTx > 0) {
|
||||
if (pindex->pprev) {
|
||||
if (pindex->pprev->nChainTx > 0) {
|
||||
pindex->nChainTx = pindex->pprev->nChainTx + pindex->nTx;
|
||||
} else {
|
||||
pindex->nChainTx = 0;
|
||||
m_blocks_unlinked.insert(std::make_pair(pindex->pprev, pindex));
|
||||
}
|
||||
} else {
|
||||
pindex->nChainTx = pindex->nTx;
|
||||
}
|
||||
}
|
||||
if (!(pindex->nStatus & BLOCK_FAILED_MASK) && pindex->pprev && (pindex->pprev->nStatus & BLOCK_FAILED_MASK)) {
|
||||
pindex->nStatus |= BLOCK_FAILED_CHILD;
|
||||
setDirtyBlockIndex.insert(pindex);
|
||||
}
|
||||
if (pindex->IsAssumedValid() ||
|
||||
(pindex->IsValid(BLOCK_VALID_TRANSACTIONS) &&
|
||||
(pindex->HaveTxsDownloaded() || pindex->pprev == nullptr))) {
|
||||
|
||||
// Fill each chainstate's block candidate set. Only add assumed-valid
|
||||
// blocks to the tip candidate set if the chainstate is allowed to rely on
|
||||
// assumed-valid blocks.
|
||||
//
|
||||
// If all setBlockIndexCandidates contained the assumed-valid blocks, the
|
||||
// background chainstate's ActivateBestChain() call would add assumed-valid
|
||||
// blocks to the chain (based on how FindMostWorkChain() works). Obviously
|
||||
// we don't want this since the purpose of the background validation chain
|
||||
// is to validate assued-valid blocks.
|
||||
//
|
||||
// Note: This is considering all blocks whose height is greater or equal to
|
||||
// the first assumed-valid block to be assumed-valid blocks, and excluding
|
||||
// them from the background chainstate's setBlockIndexCandidates set. This
|
||||
// does mean that some blocks which are not technically assumed-valid
|
||||
// (later blocks on a fork beginning before the first assumed-valid block)
|
||||
// might not get added to the the background chainstate, but this is ok,
|
||||
// because they will still be attached to the active chainstate if they
|
||||
// actually contain more work.
|
||||
//
|
||||
// Instad of this height-based approach, an earlier attempt was made at
|
||||
// detecting "holistically" whether the block index under consideration
|
||||
// relied on an assumed-valid ancestor, but this proved to be too slow to
|
||||
// be practical.
|
||||
for (CChainState* chainstate : chainman.GetAll()) {
|
||||
if (chainstate->reliesOnAssumedValid() ||
|
||||
pindex->nHeight < first_assumed_valid_height) {
|
||||
chainstate->setBlockIndexCandidates.insert(pindex);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (pindex->nStatus & BLOCK_FAILED_MASK && (!chainman.m_best_invalid || pindex->nChainWork > chainman.m_best_invalid->nChainWork)) {
|
||||
chainman.m_best_invalid = pindex;
|
||||
}
|
||||
if (pindex->pprev)
|
||||
pindex->BuildSkip();
|
||||
if (pindex->IsValid(BLOCK_VALID_TREE) && (pindexBestHeader == nullptr || CBlockIndexWorkComparator()(pindexBestHeader, pindex)))
|
||||
pindexBestHeader = pindex;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void BlockManager::Unload() {
|
||||
m_blocks_unlinked.clear();
|
||||
|
||||
for (const BlockMap::value_type& entry : m_block_index) {
|
||||
delete entry.second;
|
||||
}
|
||||
|
||||
m_block_index.clear();
|
||||
}
|
||||
|
||||
bool BlockManager::LoadBlockIndexDB(ChainstateManager& chainman)
|
||||
{
|
||||
if (!LoadBlockIndex(::Params().GetConsensus(), chainman)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Load block file info
|
||||
m_block_tree_db->ReadLastBlockFile(nLastBlockFile);
|
||||
vinfoBlockFile.resize(nLastBlockFile + 1);
|
||||
LogPrintf("%s: last block file = %i\n", __func__, nLastBlockFile);
|
||||
for (int nFile = 0; nFile <= nLastBlockFile; nFile++) {
|
||||
m_block_tree_db->ReadBlockFileInfo(nFile, vinfoBlockFile[nFile]);
|
||||
}
|
||||
LogPrintf("%s: last block file info: %s\n", __func__, vinfoBlockFile[nLastBlockFile].ToString());
|
||||
for (int nFile = nLastBlockFile + 1; true; nFile++) {
|
||||
CBlockFileInfo info;
|
||||
if (m_block_tree_db->ReadBlockFileInfo(nFile, info)) {
|
||||
vinfoBlockFile.push_back(info);
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Check presence of blk files
|
||||
LogPrintf("Checking all blk files are present...\n");
|
||||
std::set<int> setBlkDataFiles;
|
||||
for (const std::pair<const uint256, CBlockIndex*>& item : m_block_index) {
|
||||
CBlockIndex* pindex = item.second;
|
||||
if (pindex->nStatus & BLOCK_HAVE_DATA) {
|
||||
setBlkDataFiles.insert(pindex->nFile);
|
||||
}
|
||||
}
|
||||
for (std::set<int>::iterator it = setBlkDataFiles.begin(); it != setBlkDataFiles.end(); it++)
|
||||
{
|
||||
FlatFilePos pos(*it, 0);
|
||||
if (CAutoFile(OpenBlockFile(pos, true), SER_DISK, CLIENT_VERSION).IsNull()) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// Check whether we have ever pruned block & undo files
|
||||
m_block_tree_db->ReadFlag("prunedblockfiles", fHavePruned);
|
||||
if (fHavePruned)
|
||||
LogPrintf("LoadBlockIndexDB(): Block files have previously been pruned\n");
|
||||
|
||||
// Check whether we need to continue reindexing
|
||||
bool fReindexing = false;
|
||||
m_block_tree_db->ReadReindexing(fReindexing);
|
||||
if(fReindexing) fReindex = true;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void CChainState::LoadMempool(const ArgsManager& args)
|
||||
{
|
||||
if (!m_mempool) return;
|
||||
|
||||
@ -15,6 +15,7 @@
|
||||
#include <chain.h>
|
||||
#include <consensus/amount.h>
|
||||
#include <fs.h>
|
||||
#include <node/blockstorage.h>
|
||||
#include <policy/feerate.h>
|
||||
#include <policy/packages.h>
|
||||
#include <script/script_error.h>
|
||||
@ -40,7 +41,6 @@
|
||||
class CChainState;
|
||||
class CBlockTreeDB;
|
||||
class CChainParams;
|
||||
struct CCheckpointData;
|
||||
class CTxMemPool;
|
||||
class ChainstateManager;
|
||||
class SnapshotMetadata;
|
||||
@ -107,7 +107,6 @@ enum class SynchronizationState {
|
||||
};
|
||||
|
||||
extern RecursiveMutex cs_main;
|
||||
typedef std::unordered_map<uint256, CBlockIndex*, BlockHasher> BlockMap;
|
||||
extern Mutex g_best_block_mutex;
|
||||
extern std::condition_variable g_best_block_cv;
|
||||
/** Used to notify getblocktemplate RPC of new tips. */
|
||||
@ -381,85 +380,6 @@ enum class FlushStateMode {
|
||||
ALWAYS
|
||||
};
|
||||
|
||||
struct CBlockIndexWorkComparator
|
||||
{
|
||||
bool operator()(const CBlockIndex *pa, const CBlockIndex *pb) const;
|
||||
};
|
||||
|
||||
/**
|
||||
* Maintains a tree of blocks (stored in `m_block_index`) which is consulted
|
||||
* to determine where the most-work tip is.
|
||||
*
|
||||
* This data is used mostly in `CChainState` - information about, e.g.,
|
||||
* candidate tips is not maintained here.
|
||||
*/
|
||||
class BlockManager
|
||||
{
|
||||
friend CChainState;
|
||||
|
||||
private:
|
||||
/* Calculate the block/rev files to delete based on height specified by user with RPC command pruneblockchain */
|
||||
void FindFilesToPruneManual(std::set<int>& setFilesToPrune, int nManualPruneHeight, int chain_tip_height);
|
||||
|
||||
/**
|
||||
* Prune block and undo files (blk???.dat and rev???.dat) so that the disk space used is less than a user-defined target.
|
||||
* The user sets the target (in MB) on the command line or in config file. This will be run on startup and whenever new
|
||||
* space is allocated in a block or undo file, staying below the target. Changing back to unpruned requires a reindex
|
||||
* (which in this case means the blockchain must be re-downloaded.)
|
||||
*
|
||||
* Pruning functions are called from FlushStateToDisk when the global fCheckForPruning flag has been set.
|
||||
* Block and undo files are deleted in lock-step (when blk00003.dat is deleted, so is rev00003.dat.)
|
||||
* Pruning cannot take place until the longest chain is at least a certain length (100000 on mainnet, 1000 on testnet, 1000 on regtest).
|
||||
* Pruning will never delete a block within a defined distance (currently 288) from the active chain's tip.
|
||||
* The block index is updated by unsetting HAVE_DATA and HAVE_UNDO for any blocks that were stored in the deleted files.
|
||||
* A db flag records the fact that at least some block files have been pruned.
|
||||
*
|
||||
* @param[out] setFilesToPrune The set of file indices that can be unlinked will be returned
|
||||
*/
|
||||
void FindFilesToPrune(std::set<int>& setFilesToPrune, uint64_t nPruneAfterHeight, int chain_tip_height, int prune_height, bool is_ibd);
|
||||
|
||||
public:
|
||||
BlockMap m_block_index GUARDED_BY(cs_main);
|
||||
|
||||
/**
|
||||
* All pairs A->B, where A (or one of its ancestors) misses transactions, but B has transactions.
|
||||
* Pruned nodes may have entries where B is missing data.
|
||||
*/
|
||||
std::multimap<CBlockIndex*, CBlockIndex*> m_blocks_unlinked;
|
||||
|
||||
std::unique_ptr<CBlockTreeDB> m_block_tree_db GUARDED_BY(::cs_main);
|
||||
|
||||
bool LoadBlockIndexDB(ChainstateManager& chainman) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
|
||||
|
||||
/**
|
||||
* Load the blocktree off disk and into memory. Populate certain metadata
|
||||
* per index entry (nStatus, nChainWork, nTimeMax, etc.) as well as peripheral
|
||||
* collections like setDirtyBlockIndex.
|
||||
*/
|
||||
bool LoadBlockIndex(
|
||||
const Consensus::Params& consensus_params,
|
||||
ChainstateManager& chainman) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
/** Clear all data members. */
|
||||
void Unload() EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
CBlockIndex* AddToBlockIndex(const CBlockHeader& block) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
/** Create a new block index entry for a given block hash */
|
||||
CBlockIndex* InsertBlockIndex(const uint256& hash) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
//! Mark one block file as pruned (modify associated database entries)
|
||||
void PruneOneBlockFile(const int fileNumber) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
CBlockIndex* LookupBlockIndex(const uint256& hash) const EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
//! Returns last CBlockIndex* that is a checkpoint
|
||||
CBlockIndex* GetLastCheckpoint(const CCheckpointData& data) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
|
||||
|
||||
~BlockManager() {
|
||||
Unload();
|
||||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* A convenience class for constructing the CCoinsView* hierarchy used
|
||||
* to facilitate access to the UTXO set.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user