Method PeriodicFlush

src/wallet/db.cpp:706–747

}

bool BerkeleyBatch::PeriodicFlush(BerkeleyDatabase& database)
{
    if (database.IsDummy()) {
        return true;
    }
    bool ret = false;
    BerkeleyEnvironment *env = database.env;
    const std::string& strFile = database.strFile;
    TRY_LOCK(cs_db, lockDb);
    if (lockDb)
    {
        // Don't do this if any databases are in use
        int nRefCount = 0;
        std::map<std::string, int>::iterator mit = env->mapFileUseCount.begin();
        while (mit != env->mapFileUseCount.end())
        {
            nRefCount += (*mit).second;
            mit++;
        }

        if (nRefCount == 0)
        {
            boost::this_thread::interruption_point();
            std::map<std::string, int>::iterator mi = env->mapFileUseCount.find(strFile);
            if (mi != env->mapFileUseCount.end())
            {
                LogPrint(BCLog::DB, "Flushing %s\n", strFile);
                int64_t nStart = GetTimeMillis();

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

                env->mapFileUseCount.erase(mi++);
                LogPrint(BCLog::DB, "Flushed %s %dms\n", strFile, GetTimeMillis() - nStart);
                ret = true;
            }
        }
    }

    return ret;
}

bool BerkeleyDatabase::Rewrite(const char* pszSkip)
{