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0352258148
Use DBParams struct to remove ArgsManager uses from txdb. To reduce size of this commit, this moves references to gArgs variable out of txdb.cpp to calling code in chainstate.cpp. But these moves are temporary. The gArgs references in chainstate.cpp are moved out to calling code in init.cpp in later commits. This commit does not change behavior.
104 lines
3.8 KiB
C++
104 lines
3.8 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2022 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 <kernel/cs_main.h>
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#include <sync.h>
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#include <fs.h>
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#include <memory>
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#include <optional>
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#include <string>
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#include <utility>
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#include <vector>
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class CBlockFileInfo;
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class CBlockIndex;
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class uint256;
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namespace Consensus {
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struct Params;
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};
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struct bilingual_str;
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//! -dbcache default (MiB)
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static const int64_t nDefaultDbCache = 450;
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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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//! User-controlled performance and debug options.
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struct CoinsViewOptions {
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//! Maximum database write batch size in bytes.
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size_t batch_write_bytes = nDefaultDbBatchSize;
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//! If non-zero, randomly exit when the database is flushed with (1/ratio)
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//! probability.
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int simulate_crash_ratio = 0;
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};
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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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DBParams m_db_params;
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CoinsViewOptions m_options;
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std::unique_ptr<CDBWrapper> m_db;
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public:
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explicit CCoinsViewDB(DBParams db_params, CoinsViewOptions options);
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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, bool erase = true) override;
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std::unique_ptr<CCoinsViewCursor> Cursor() const override;
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//! Whether an unsupported database format is used.
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bool NeedsUpgrade();
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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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//! @returns filesystem path to on-disk storage or std::nullopt if in memory.
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std::optional<fs::path> StoragePath() { return m_db->StoragePath(); }
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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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using CDBWrapper::CDBWrapper;
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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 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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EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
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};
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std::optional<bilingual_str> CheckLegacyTxindex(CBlockTreeDB& block_tree_db);
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#endif // BITCOIN_TXDB_H
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