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52c8ef2feb
7ad414f4bfa74595ee5726e66f3527045c02a977 doc: add comment about CCoinsViewDBCursor constructor (James O'Beirne) 0f8a5a4dd530549d37c43da52c923ac3b2af1a03 move-only(ish): don't expose CCoinsViewDBCursor (James O'Beirne) 615c1adfb07b9b466173166dc2e53ace540e4b32 refactor: wrap CCoinsViewCursor in unique_ptr (James O'Beirne) Pull request description: I tripped over this one for a few hours at the beginning of the week, so I've sort of got a personal vendetta against `CCoinsView::Cursor()` returning a raw pointer. Specifically in the case of CCoinsViewDB, if a raw cursor is allocated and not freed, a cryptic leveldb assertion failure occurs on CCoinsViewDB destruction (`Assertion 'dummy_versions_.next_ == &dummy_versions_' failed.`). This is a pretty simple change. Related to: https://github.com/bitcoin/bitcoin/issues/21766 See also: https://github.com/google/leveldb/issues/142#issuecomment-414418135 ACKs for top commit: MarcoFalke: review ACK 7ad414f4bfa74595ee5726e66f3527045c02a977 🔎 jonatack: re-ACK 7ad414f4bfa74595ee5726e66f3527045c02a977 modulo suggestion ryanofsky: Code review ACK 7ad414f4bfa74595ee5726e66f3527045c02a977. Two new commits look good and thanks for clarifying constructor comment Tree-SHA512: 6471d03e2de674d84b1ea0d31e25f433d52aa1aa4996f7b4aab1bd02b6bc340b15e64cc8ea07bbefefa3b5da35384ca5400cc230434e787c30931b8574c672f9
106 lines
4.5 KiB
C++
106 lines
4.5 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_TXDB_H
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#define BITCOIN_TXDB_H
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#include <coins.h>
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#include <dbwrapper.h>
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#include <chain.h>
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#include <primitives/block.h>
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#include <spentindex.h>
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#include <timestampindex.h>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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class CBlockIndex;
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class CCoinsViewDBCursor;
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class uint256;
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//! -dbcache default (MiB)
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static const int64_t nDefaultDbCache = 300;
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//! -dbbatchsize default (bytes)
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static const int64_t nDefaultDbBatchSize = 16 << 20;
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//! max. -dbcache (MiB)
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static const int64_t nMaxDbCache = sizeof(void*) > 4 ? 16384 : 1024;
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//! min. -dbcache (MiB)
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static const int64_t nMinDbCache = 4;
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//! Max memory allocated to block tree DB specific cache, if no -txindex (MiB)
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static const int64_t nMaxBlockDBCache = 2;
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//! Max memory allocated to block tree DB specific cache, if -txindex (MiB)
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// Unlike for the UTXO database, for the txindex scenario the leveldb cache make
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// a meaningful difference: https://github.com/bitcoin/bitcoin/pull/8273#issuecomment-229601991
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static const int64_t nMaxTxIndexCache = 1024;
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//! Max memory allocated to all block filter index caches combined in MiB.
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static const int64_t max_filter_index_cache = 1024;
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//! Max memory allocated to coin DB specific cache (MiB)
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static const int64_t nMaxCoinsDBCache = 8;
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// Actually declared in validation.cpp; can't include because of circular dependency.
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extern RecursiveMutex cs_main;
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/** CCoinsView backed by the coin database (chainstate/) */
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class CCoinsViewDB final : public CCoinsView
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{
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protected:
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std::unique_ptr<CDBWrapper> m_db;
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fs::path m_ldb_path;
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bool m_is_memory;
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public:
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/**
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* @param[in] ldb_path Location in the filesystem where leveldb data will be stored.
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*/
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explicit CCoinsViewDB(fs::path ldb_path, size_t nCacheSize, bool fMemory, bool fWipe);
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bool GetCoin(const COutPoint &outpoint, Coin &coin) const override;
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bool HaveCoin(const COutPoint &outpoint) const override;
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uint256 GetBestBlock() const override;
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std::vector<uint256> GetHeadBlocks() const override;
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bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) override;
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std::unique_ptr<CCoinsViewCursor> Cursor() const override;
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//! Attempt to update from an older database format. Returns whether an error occurred.
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bool Upgrade();
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size_t EstimateSize() const override;
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//! Dynamically alter the underlying leveldb cache size.
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void ResizeCache(size_t new_cache_size) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
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};
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/** Access to the block database (blocks/index/) */
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class CBlockTreeDB : public CDBWrapper
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{
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public:
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explicit CBlockTreeDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
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bool WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo);
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bool ReadBlockFileInfo(int nFile, CBlockFileInfo &info);
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bool ReadLastBlockFile(int &nFile);
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bool WriteReindexing(bool fReindexing);
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void ReadReindexing(bool &fReindexing);
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bool ReadSpentIndex(CSpentIndexKey &key, CSpentIndexValue &value);
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bool UpdateSpentIndex(const std::vector<std::pair<CSpentIndexKey, CSpentIndexValue> >&vect);
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bool UpdateAddressUnspentIndex(const std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue > >&vect);
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bool ReadAddressUnspentIndex(uint160 addressHash, AddressType type,
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std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > &vect);
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bool WriteAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount> > &vect);
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bool EraseAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount> > &vect);
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bool ReadAddressIndex(uint160 addressHash, AddressType type,
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std::vector<std::pair<CAddressIndexKey, CAmount> > &addressIndex,
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int start = 0, int end = 0);
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bool WriteTimestampIndex(const CTimestampIndexKey ×tampIndex);
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bool EraseTimestampIndex(const CTimestampIndexKey& timestampIndex);
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bool ReadTimestampIndex(const unsigned int &high, const unsigned int &low, std::vector<uint256> &vect);
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bool WriteFlag(const std::string &name, bool fValue);
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bool ReadFlag(const std::string &name, bool &fValue);
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bool LoadBlockIndexGuts(const Consensus::Params& consensusParams, std::function<CBlockIndex*(const uint256&)> insertBlockIndex);
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};
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#endif // BITCOIN_TXDB_H
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