utxo_snapshot.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2019 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 <primitives/blockhash.h>
#include <serialize.h>
#include <util/fs.h>
#include <validation.h>
 
#include <optional>
 
struct BlockHash;
 
namespace node {
class SnapshotMetadata {
public:
    BlockHash m_base_blockhash;
 
    uint64_t m_coins_count = 0;
 
    SnapshotMetadata() {}
    SnapshotMetadata(const BlockHash &base_blockhash, uint64_t coins_count,
                     uint64_t nchaintx)
        : 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<BlockHash> ReadSnapshotBaseBlockhash(const fs::path &chaindir)
    EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
 
constexpr std::string_view SNAPSHOT_CHAINSTATE_SUFFIX = "_snapshot";
 
std::optional<fs::path> FindSnapshotChainstateDir();
 
} // namespace node
 
#endif // BITCOIN_NODE_UTXO_SNAPSHOT_H