Function PrepareShutdown

src/init.cpp:195–281

Preparing steps before shutting down or restarting the wallet */

/** Preparing steps before shutting down or restarting the wallet */
void PrepareShutdown()
{
    LogPrintf("%s: In progress...\n", __func__);
    static CCriticalSection cs_Shutdown;
    TRY_LOCK(cs_Shutdown, lockShutdown);
    if (!lockShutdown)
        return;

    /// Note: Shutdown() must be able to handle cases in which AppInit2() failed part of the way,
    /// for example if the data directory was found to be locked.
    /// Be sure that anything that writes files or flushes caches only does this if the respective
    /// module was initialized.
    RenameThread("lux-shutoff");
    mempool.AddTransactionsUpdated(1);

    StopHTTPRPC();
    StopREST();
    StopRPC();
    StopHTTPServer();
#ifdef ENABLE_WALLET
    if (pwalletMain)
        bitdb.Flush(false);
//    GenerateBitcoins(NULL, 0);
#endif
    StopNode();
    UnregisterNodeSignals(GetNodeSignals());

    // After everything has been shut down, but before things get flushed, stop the
    // CScheduler/checkqueue threadGroup
    threadGroup.interrupt_all();
    threadGroup.join_all();

    if (fFeeEstimatesInitialized) {
        boost::filesystem::path est_path = GetDataDir() / FEE_ESTIMATES_FILENAME;
        CAutoFile est_fileout(fopen(est_path.string().c_str(), "wb"), SER_DISK, CLIENT_VERSION);
        if (!est_fileout.IsNull())
            mempool.WriteFeeEstimates(est_fileout);
        else
            LogPrintf("%s: Failed to write fee estimates to %s\n", __func__, est_path.string());
        fFeeEstimatesInitialized = false;
    }

    {
        LOCK(cs_main);
        if (pcoinsTip != NULL) {
            FlushStateToDisk();

            //record that client took the proper shutdown procedure
            pblocktree->WriteFlag("shutdown", true);
        }
        delete pcoinsTip;
        pcoinsTip = NULL;
        delete pcoinscatcher;
        pcoinscatcher = NULL;
        delete pcoinsdbview;
        pcoinsdbview = NULL;
        delete pblocktree;
        pblocktree = NULL;