Method SpendCoin

src/coins.cpp:132–154

}

bool CCoinsViewCache::SpendCoin(const COutPoint &outpoint, Coin* moveout) {
    CCoinsMap::iterator it = FetchCoin(outpoint);
    if (it == cacheCoins.end()) return false;
    Assume(TrySub(m_dirty_count, it->second.IsDirty()));
    Assume(TrySub(cachedCoinsUsage, it->second.coin.DynamicMemoryUsage()));
    TRACEPOINT(utxocache, spent,
           outpoint.hash.data(),
           (uint32_t)outpoint.n,
           (uint32_t)it->second.coin.nHeight,
           (int64_t)it->second.coin.out.nValue,
           (bool)it->second.coin.IsCoinBase());
    if (moveout) {
        *moveout = std::move(it->second.coin);
    }
    if (it->second.IsFresh()) {
        cacheCoins.erase(it);
    } else {
        CCoinsCacheEntry::SetDirty(*it, m_sentinel);
        ++m_dirty_count;
        it->second.coin.Clear();
    }
    return true;
}

static const Coin coinEmpty;