Function UnloadBlockIndex

src/validation.cpp:4536–4563

May NOT be used after any connections are up as much of the peer-processing logic assumes a consistent block index state

// of the peer-processing logic assumes a consistent
// block index state
void UnloadBlockIndex()
{
    LOCK(cs_main);
    chainActive.SetTip(nullptr);
    pindexFinalized = nullptr;
    pindexBestInvalid = nullptr;
    pindexBestHeader = nullptr;
    pindexBestForkTip = nullptr;
    pindexBestForkBase = nullptr;
    mempool.clear();
    mapBlocksUnlinked.clear();
    vinfoBlockFile.clear();
    nLastBlockFile = 0;
    setDirtyBlockIndex.clear();
    setDirtyFileInfo.clear();
    versionbitscache.Clear();
    for (int b = 0; b < VERSIONBITS_NUM_BITS; b++) {
        warningcache[b].clear();
    }

    for (BlockMap::value_type& entry : mapBlockIndex) {
        delete entry.second;
    }
    mapBlockIndex.clear();
    fHavePruned = false;

    g_chainstate.UnloadBlockIndex();
}

bool LoadBlockIndex(const CChainParams& chainparams)
{