coinstats.cpp

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// Copyright (c) 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.
 
#include <node/coinstats.h>
 
#include <coins.h>
#include <index/coinstatsindex.h>
#include <validation.h>
 
#include <optional>
 
namespace node {
 
std::optional<kernel::CCoinsStats>
GetUTXOStats(CCoinsView *view, BlockManager &blockman,
             kernel::CoinStatsHashType hash_type,
             const std::function<void()> &interruption_point,
             const CBlockIndex *pindex, bool index_requested) {
    // Use CoinStatsIndex if it is requested and available and a hash_type of
    // Muhash or None was requested
    if ((hash_type == kernel::CoinStatsHashType::MUHASH ||
         hash_type == kernel::CoinStatsHashType::NONE) &&
        g_coin_stats_index && index_requested) {
        if (pindex) {
            return g_coin_stats_index->LookUpStats(pindex);
        } else {
            CBlockIndex *block_index = WITH_LOCK(
                ::cs_main,
                return blockman.LookupBlockIndex(view->GetBestBlock()));
            return g_coin_stats_index->LookUpStats(block_index);
        }
    }
 
    // If the coinstats index isn't requested or is otherwise not usable, the
    // pindex should either be null or equal to the view's best block. This is
    // because without the coinstats index we can only get coinstats about the
    // best block.
    assert(!pindex || pindex->GetBlockHash() == view->GetBestBlock());
 
    return kernel::ComputeUTXOStats(hash_type, view, blockman,
                                    interruption_point);
}
} // namespace node