LCOV - code coverage report
Current view: top level - src - txdb.h (source / functions) Hit Total Coverage
Test: coverage.lcov Lines: 2 2 100.0 %
Date: 2021-06-29 14:35:33 Functions: 2 2 100.0 %
Legend: Modified by patch:
Lines: hit not hit | Branches: + taken - not taken # not executed

Not modified by patch:
Lines: hit not hit | Branches: + taken - not taken # not executed
Branches: 0 0 -

           Branch data     Line data    Source code
#       1                 :            : // Copyright (c) 2009-2010 Satoshi Nakamoto
#       2                 :            : // Copyright (c) 2009-2020 The Bitcoin Core developers
#       3                 :            : // Distributed under the MIT software license, see the accompanying
#       4                 :            : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
#       5                 :            : 
#       6                 :            : #ifndef BITCOIN_TXDB_H
#       7                 :            : #define BITCOIN_TXDB_H
#       8                 :            : 
#       9                 :            : #include <coins.h>
#      10                 :            : #include <dbwrapper.h>
#      11                 :            : #include <chain.h>
#      12                 :            : #include <primitives/block.h>
#      13                 :            : 
#      14                 :            : #include <memory>
#      15                 :            : #include <string>
#      16                 :            : #include <utility>
#      17                 :            : #include <vector>
#      18                 :            : 
#      19                 :            : class CBlockIndex;
#      20                 :            : class CCoinsViewDBCursor;
#      21                 :            : class uint256;
#      22                 :            : 
#      23                 :            : //! -dbcache default (MiB)
#      24                 :            : static const int64_t nDefaultDbCache = 450;
#      25                 :            : //! -dbbatchsize default (bytes)
#      26                 :            : static const int64_t nDefaultDbBatchSize = 16 << 20;
#      27                 :            : //! max. -dbcache (MiB)
#      28                 :            : static const int64_t nMaxDbCache = sizeof(void*) > 4 ? 16384 : 1024;
#      29                 :            : //! min. -dbcache (MiB)
#      30                 :            : static const int64_t nMinDbCache = 4;
#      31                 :            : //! Max memory allocated to block tree DB specific cache, if no -txindex (MiB)
#      32                 :            : static const int64_t nMaxBlockDBCache = 2;
#      33                 :            : //! Max memory allocated to block tree DB specific cache, if -txindex (MiB)
#      34                 :            : // Unlike for the UTXO database, for the txindex scenario the leveldb cache make
#      35                 :            : // a meaningful difference: https://github.com/bitcoin/bitcoin/pull/8273#issuecomment-229601991
#      36                 :            : static const int64_t nMaxTxIndexCache = 1024;
#      37                 :            : //! Max memory allocated to all block filter index caches combined in MiB.
#      38                 :            : static const int64_t max_filter_index_cache = 1024;
#      39                 :            : //! Max memory allocated to coin DB specific cache (MiB)
#      40                 :            : static const int64_t nMaxCoinsDBCache = 8;
#      41                 :            : 
#      42                 :            : // Actually declared in validation.cpp; can't include because of circular dependency.
#      43                 :            : extern RecursiveMutex cs_main;
#      44                 :            : 
#      45                 :            : /** CCoinsView backed by the coin database (chainstate/) */
#      46                 :            : class CCoinsViewDB final : public CCoinsView
#      47                 :            : {
#      48                 :            : protected:
#      49                 :            :     std::unique_ptr<CDBWrapper> m_db;
#      50                 :            :     fs::path m_ldb_path;
#      51                 :            :     bool m_is_memory;
#      52                 :            : public:
#      53                 :            :     /**
#      54                 :            :      * @param[in] ldb_path    Location in the filesystem where leveldb data will be stored.
#      55                 :            :      */
#      56                 :            :     explicit CCoinsViewDB(fs::path ldb_path, size_t nCacheSize, bool fMemory, bool fWipe);
#      57                 :            : 
#      58                 :            :     bool GetCoin(const COutPoint &outpoint, Coin &coin) const override;
#      59                 :            :     bool HaveCoin(const COutPoint &outpoint) const override;
#      60                 :            :     uint256 GetBestBlock() const override;
#      61                 :            :     std::vector<uint256> GetHeadBlocks() const override;
#      62                 :            :     bool BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) override;
#      63                 :            :     CCoinsViewCursor *Cursor() const override;
#      64                 :            : 
#      65                 :            :     //! Attempt to update from an older database format. Returns whether an error occurred.
#      66                 :            :     bool Upgrade();
#      67                 :            :     size_t EstimateSize() const override;
#      68                 :            : 
#      69                 :            :     //! Dynamically alter the underlying leveldb cache size.
#      70                 :            :     void ResizeCache(size_t new_cache_size) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
#      71                 :            : };
#      72                 :            : 
#      73                 :            : /** Specialization of CCoinsViewCursor to iterate over a CCoinsViewDB */
#      74                 :            : class CCoinsViewDBCursor: public CCoinsViewCursor
#      75                 :            : {
#      76                 :            : public:
#      77                 :        344 :     ~CCoinsViewDBCursor() {}
#      78                 :            : 
#      79                 :            :     bool GetKey(COutPoint &key) const override;
#      80                 :            :     bool GetValue(Coin &coin) const override;
#      81                 :            :     unsigned int GetValueSize() const override;
#      82                 :            : 
#      83                 :            :     bool Valid() const override;
#      84                 :            :     void Next() override;
#      85                 :            : 
#      86                 :            : private:
#      87                 :            :     CCoinsViewDBCursor(CDBIterator* pcursorIn, const uint256 &hashBlockIn):
#      88                 :        344 :         CCoinsViewCursor(hashBlockIn), pcursor(pcursorIn) {}
#      89                 :            :     std::unique_ptr<CDBIterator> pcursor;
#      90                 :            :     std::pair<char, COutPoint> keyTmp;
#      91                 :            : 
#      92                 :            :     friend class CCoinsViewDB;
#      93                 :            : };
#      94                 :            : 
#      95                 :            : /** Access to the block database (blocks/index/) */
#      96                 :            : class CBlockTreeDB : public CDBWrapper
#      97                 :            : {
#      98                 :            : public:
#      99                 :            :     explicit CBlockTreeDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
#     100                 :            : 
#     101                 :            :     bool WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo);
#     102                 :            :     bool ReadBlockFileInfo(int nFile, CBlockFileInfo &info);
#     103                 :            :     bool ReadLastBlockFile(int &nFile);
#     104                 :            :     bool WriteReindexing(bool fReindexing);
#     105                 :            :     void ReadReindexing(bool &fReindexing);
#     106                 :            :     bool WriteFlag(const std::string &name, bool fValue);
#     107                 :            :     bool ReadFlag(const std::string &name, bool &fValue);
#     108                 :            :     bool LoadBlockIndexGuts(const Consensus::Params& consensusParams, std::function<CBlockIndex*(const uint256&)> insertBlockIndex);
#     109                 :            : };
#     110                 :            : 
#     111                 :            : #endif // BITCOIN_TXDB_H

Generated by: LCOV version 1.14