Line data Source code
1 : // Copyright (c) 2020-2022 The Bitcoin Core developers
2 : // Distributed under the MIT software license, see the accompanying
3 : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 :
5 : #ifndef BITCOIN_INDEX_COINSTATSINDEX_H
6 : #define BITCOIN_INDEX_COINSTATSINDEX_H
7 :
8 : #include <crypto/muhash.h>
9 : #include <index/base.h>
10 :
11 : class CBlockIndex;
12 : class CDBBatch;
13 : namespace kernel {
14 : struct CCoinsStats;
15 : }
16 :
17 : static constexpr bool DEFAULT_COINSTATSINDEX{false};
18 :
19 : /**
20 : * CoinStatsIndex maintains statistics on the UTXO set.
21 : */
22 : class CoinStatsIndex final : public BaseIndex
23 : {
24 : private:
25 : std::unique_ptr<BaseIndex::DB> m_db;
26 :
27 : MuHash3072 m_muhash;
28 : uint64_t m_transaction_output_count{0};
29 : uint64_t m_bogo_size{0};
30 : CAmount m_total_amount{0};
31 : CAmount m_total_subsidy{0};
32 : CAmount m_total_unspendable_amount{0};
33 : CAmount m_total_prevout_spent_amount{0};
34 : CAmount m_total_new_outputs_ex_coinbase_amount{0};
35 : CAmount m_total_coinbase_amount{0};
36 : CAmount m_total_unspendables_genesis_block{0};
37 : CAmount m_total_unspendables_bip30{0};
38 : CAmount m_total_unspendables_scripts{0};
39 : CAmount m_total_unspendables_unclaimed_rewards{0};
40 :
41 : [[nodiscard]] bool ReverseBlock(const interfaces::BlockInfo& block);
42 :
43 0 : bool AllowPrune() const override { return true; }
44 :
45 : protected:
46 : interfaces::Chain::NotifyOptions CustomOptions() override;
47 :
48 : bool CustomInit(const std::optional<interfaces::BlockRef>& block) override;
49 :
50 : bool CustomCommit(CDBBatch& batch) override;
51 :
52 : bool CustomAppend(const interfaces::BlockInfo& block) override;
53 :
54 : bool CustomRemove(const interfaces::BlockInfo& block) override;
55 :
56 0 : BaseIndex::DB& GetDB() const override { return *m_db; }
57 :
58 : public:
59 : // Constructs the index, which becomes available to be queried.
60 : explicit CoinStatsIndex(std::unique_ptr<interfaces::Chain> chain, size_t n_cache_size, bool f_memory = false, bool f_wipe = false);
61 :
62 : // Look up stats for a specific block using CBlockIndex
63 : std::optional<kernel::CCoinsStats> LookUpStats(const CBlockIndex& block_index) const;
64 : };
65 :
66 : /// The global UTXO set hash object.
67 : extern std::unique_ptr<CoinStatsIndex> g_coin_stats_index;
68 :
69 : #endif // BITCOIN_INDEX_COINSTATSINDEX_H
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