utxo_snapshot.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_NODE_UTXO_SNAPSHOT_H
#define BITCOIN_NODE_UTXO_SNAPSHOT_H
 
#include <kernel/cs_main.h>
#include <serialize.h>
#include <sync.h>
#include <uint256.h>
#include <util/fs.h>
 
#include <cstdint>
#include <optional>
#include <string_view>
 
class Chainstate;
 
namespace node {
class SnapshotMetadata
{
public:
    uint256 m_base_blockhash;
 
    uint64_t m_coins_count = 0;
 
    SnapshotMetadata() { }
    SnapshotMetadata(
        const uint256& base_blockhash,
        uint64_t coins_count) :
            m_base_blockhash(base_blockhash),
            m_coins_count(coins_count) { }
 
    SERIALIZE_METHODS(SnapshotMetadata, obj) { READWRITE(obj.m_base_blockhash, obj.m_coins_count); }
};
 
const fs::path SNAPSHOT_BLOCKHASH_FILENAME{"base_blockhash"};
 
bool WriteSnapshotBaseBlockhash(Chainstate& snapshot_chainstate)
    EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
 
std::optional<uint256> ReadSnapshotBaseBlockhash(fs::path chaindir)
    EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
 
constexpr std::string_view SNAPSHOT_CHAINSTATE_SUFFIX = "_snapshot";
 
 
std::optional<fs::path> FindSnapshotChainstateDir(const fs::path& data_dir);
 
} // namespace node
 
#endif // BITCOIN_NODE_UTXO_SNAPSHOT_H