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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 <uint256.h>
#include <serialize.h>
//! Metadata describing a serialized version of a UTXO set from which an
//! assumeutxo CChainState can be constructed.
class SnapshotMetadata
{
public:
//! The hash of the block that reflects the tip of the chain for the
//! UTXO set contained in this snapshot.
uint256 m_base_blockhash;
//! The number of coins in the UTXO set contained in this snapshot. Used
//! during snapshot load to estimate progress of UTXO set reconstruction.
uint64_t m_coins_count = 0;
//! Necessary to "fake" the base nChainTx so that we can estimate progress during
//! initial block download for the assumeutxo chainstate.
unsigned int m_nchaintx = 0;
SnapshotMetadata() { }
SnapshotMetadata(
const uint256& base_blockhash,
uint64_t coins_count,
unsigned int nchaintx) :
m_base_blockhash(base_blockhash),
m_coins_count(coins_count),
m_nchaintx(nchaintx) { }
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action)
{
READWRITE(m_base_blockhash);
READWRITE(m_coins_count);
READWRITE(m_nchaintx);
}
};
#endif // BITCOIN_NODE_UTXO_SNAPSHOT_H
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