Method PeriodicFlush

src/wallet/bdb.cpp:578–603

}

bool BerkeleyDatabase::PeriodicFlush()
{
    // Don't flush if we can't acquire the lock.
    TRY_LOCK(cs_db, lockDb);
    if (!lockDb) return false;

    // Don't flush if any databases are in use
    for (auto& it : env->m_databases) {
        if (it.second.get().m_refcount > 0) return false;
    }

    // Don't flush if there haven't been any batch writes for this database.
    if (m_refcount < 0) return false;

    LogPrint(BCLog::WALLETDB, "Flushing %s\n", strFile);
    int64_t nStart = GetTimeMillis();

    // Flush wallet file so it's self contained
    env->CloseDb(strFile);
    env->CheckpointLSN(strFile);
    m_refcount = -1;

    LogPrint(BCLog::WALLETDB, "Flushed %s %dms\n", strFile, GetTimeMillis() - nStart);

    return true;
}

bool BerkeleyDatabase::Backup(const std::string& strDest) const
{