Method NewKeyPool

src/wallet/wallet.cpp:3286–3318

* Mark old keypool keys as used, * and generate all new keys */

 * and generate all new keys
 */
bool CWallet::NewKeyPool()
{
    if (IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
        return false;
    }
    {
        LOCK(cs_wallet);
        WalletBatch batch(*database);

        for (int64_t nIndex : setInternalKeyPool) {
            batch.ErasePool(nIndex);
        }
        setInternalKeyPool.clear();

        for (int64_t nIndex : setExternalKeyPool) {
            batch.ErasePool(nIndex);
        }
        setExternalKeyPool.clear();

        for (int64_t nIndex : set_pre_split_keypool) {
            batch.ErasePool(nIndex);
        }
        set_pre_split_keypool.clear();

        m_pool_key_to_index.clear();

        if (!TopUpKeyPool()) {
            return false;
        }
        WalletLogPrintf("CWallet::NewKeyPool rewrote keypool\n");
    }
    return true;
}

size_t CWallet::KeypoolCountExternalKeys()
{