Line data    Source code

       1             : // Copyright (c) 2009-2010 Satoshi Nakamoto
       2             : // Copyright (c) 2009-2019 The Bitcoin Core developers
       3             : // Distributed under the MIT software license, see the accompanying
       4             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       5             : 
       6             : #ifndef BITCOIN_NODE_UTXO_SNAPSHOT_H
       7             : #define BITCOIN_NODE_UTXO_SNAPSHOT_H
       8             : 
       9             : #include <uint256.h>
      10             : #include <serialize.h>
      11             : 
      12             : //! Metadata describing a serialized version of a UTXO set from which an
      13             : //! assumeutxo CChainState can be constructed.
      14             : class SnapshotMetadata
      15             : {
      16             : public:
      17             :     //! The hash of the block that reflects the tip of the chain for the
      18             :     //! UTXO set contained in this snapshot.
      19             :     uint256 m_base_blockhash;
      20             : 
      21             :     //! The number of coins in the UTXO set contained in this snapshot. Used
      22             :     //! during snapshot load to estimate progress of UTXO set reconstruction.
      23             :     uint64_t m_coins_count = 0;
      24             : 
      25             :     //! Necessary to "fake" the base nChainTx so that we can estimate progress during
      26             :     //! initial block download for the assumeutxo chainstate.
      27             :     unsigned int m_nchaintx = 0;
      28             : 
      29             :     SnapshotMetadata() { }
      30           2 :     SnapshotMetadata(
      31             :         const uint256& base_blockhash,
      32             :         uint64_t coins_count,
      33             :         unsigned int nchaintx) :
      34           1 :             m_base_blockhash(base_blockhash),
      35           1 :             m_coins_count(coins_count),
      36           2 :             m_nchaintx(nchaintx) { }
      37             : 
      38           3 :     SERIALIZE_METHODS(SnapshotMetadata, obj) { READWRITE(obj.m_base_blockhash, obj.m_coins_count, obj.m_nchaintx); }
      39             : };
      40             : 
      41             : #endif // BITCOIN_NODE_UTXO_SNAPSHOT_H