Method Rewind

src/index/coinstatsindex.cpp:276–312

}

bool CoinStatsIndex::Rewind(const CBlockIndex* current_tip, const CBlockIndex* new_tip)
{
    assert(current_tip->GetAncestor(new_tip->nHeight) == new_tip);

    CDBBatch batch(*m_db);
    std::unique_ptr<CDBIterator> db_it(m_db->NewIterator());

    // During a reorg, we need to copy all hash digests for blocks that are
    // getting disconnected from the height index to the hash index so we can
    // still find them when the height index entries are overwritten.
    if (!CopyHeightIndexToHashIndex(*db_it, batch, m_name, new_tip->nHeight, current_tip->nHeight)) {
        return false;
    }

    if (!m_db->WriteBatch(batch)) return false;

    {
        LOCK(cs_main);
        CBlockIndex* iter_tip{m_chainstate->m_blockman.LookupBlockIndex(current_tip->GetBlockHash())};
        const auto& consensus_params{Params().GetConsensus()};

        do {
            CBlock block;

            if (!ReadBlockFromDisk(block, iter_tip, consensus_params)) {
                return error("%s: Failed to read block %s from disk",
                             __func__, iter_tip->GetBlockHash().ToString());
            }

            ReverseBlock(block, iter_tip);

            iter_tip = iter_tip->GetAncestor(iter_tip->nHeight - 1);
        } while (new_tip != iter_tip);
    }

    return BaseIndex::Rewind(current_tip, new_tip);
}

static bool LookUpOne(const CDBWrapper& db, const CBlockIndex* block_index, DBVal& result)
{