diff options
Diffstat (limited to 'src/txdb.h')
| -rw-r--r-- | src/txdb.h | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/src/txdb.h b/src/txdb.h index ad76b3257d..4193f98de1 100644 --- a/src/txdb.h +++ b/src/txdb.h @@ -9,6 +9,7 @@ #include <coins.h> #include <dbwrapper.h> #include <chain.h> +#include <primitives/block.h> #include <map> #include <memory> @@ -35,7 +36,7 @@ static const int64_t nMaxBlockDBCache = 2; //! Max memory allocated to block tree DB specific cache, if -txindex (MiB) // Unlike for the UTXO database, for the txindex scenario the leveldb cache make // a meaningful difference: https://github.com/bitcoin/bitcoin/pull/8273#issuecomment-229601991 -static const int64_t nMaxBlockDBAndTxIndexCache = 1024; +static const int64_t nMaxTxIndexCache = 1024; //! Max memory allocated to coin DB specific cache (MiB) static const int64_t nMaxCoinsDBCache = 8; @@ -47,7 +48,7 @@ struct CDiskTxPos : public CDiskBlockPos template <typename Stream, typename Operation> inline void SerializationOp(Stream& s, Operation ser_action) { - READWRITE(*static_cast<CDiskBlockPos*>(this)); + READWRITEAS(CDiskBlockPos, *this); READWRITE(VARINT(nTxOffset)); } @@ -112,9 +113,6 @@ class CBlockTreeDB : public CDBWrapper public: explicit CBlockTreeDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false); - CBlockTreeDB(const CBlockTreeDB&) = delete; - CBlockTreeDB& operator=(const CBlockTreeDB&) = delete; - bool WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo); bool ReadBlockFileInfo(int nFile, CBlockFileInfo &info); bool ReadLastBlockFile(int &nFile); @@ -127,4 +125,36 @@ public: bool LoadBlockIndexGuts(const Consensus::Params& consensusParams, std::function<CBlockIndex*(const uint256&)> insertBlockIndex); }; +/** + * Access to the txindex database (indexes/txindex/) + * + * The database stores a block locator of the chain the database is synced to + * so that the TxIndex can efficiently determine the point it last stopped at. + * A locator is used instead of a simple hash of the chain tip because blocks + * and block index entries may not be flushed to disk until after this database + * is updated. + */ +class TxIndexDB : public CDBWrapper +{ +public: + explicit TxIndexDB(size_t n_cache_size, bool f_memory = false, bool f_wipe = false); + + /// Read the disk location of the transaction data with the given hash. Returns false if the + /// transaction hash is not indexed. + bool ReadTxPos(const uint256& txid, CDiskTxPos& pos) const; + + /// Write a batch of transaction positions to the DB. + bool WriteTxs(const std::vector<std::pair<uint256, CDiskTxPos>>& v_pos); + + /// Read block locator of the chain that the txindex is in sync with. + bool ReadBestBlock(CBlockLocator& locator) const; + + /// Write block locator of the chain that the txindex is in sync with. + bool WriteBestBlock(const CBlockLocator& locator); + + /// Migrate txindex data from the block tree DB, where it may be for older nodes that have not + /// been upgraded yet to the new database. + bool MigrateData(CBlockTreeDB& block_tree_db, const CBlockLocator& best_locator); +}; + #endif // BITCOIN_TXDB_H |