C++ (Cpp) IHThorDistributionArg::merge Examples

Example #1

File: thdistribution.cpp Project: RobertoMalatesta/HPCC-Platform

    virtual void process()
    {
        CMasterActivity::process();

        IHThorDistributionArg * helper = (IHThorDistributionArg *)queryHelper();
        IOutputMetaData *rcSz = helper->queryInternalRecordSize();

        unsigned nslaves = container.queryJob().querySlaves();

        IDistributionTable * * result = (IDistributionTable * *)createThorRow(rcSz->getMinRecordSize()); // not a real row
        helper->clearAggregate(result);


        while (nslaves--)
        {
            rank_t sender;
            CMessageBuffer msg;
            if (!receiveMsg(msg, RANK_ALL, mpTag, &sender))
                return;
#if THOR_TRACE_LEVEL >= 5
            ActPrintLog("Received distribution result from node %d", (unsigned)sender);
#endif
            if (msg.length())
                helper->merge(result, msg);
        }

        StringBuffer tmp;
        tmp.append("<XML>");
        helper->gatherResult(result, tmp);
        tmp.append("</XML>");

#if THOR_TRACE_LEVEL >= 5
        ActPrintLog("Distribution result: %s", tmp.str());
#endif

        helper->sendResult(tmp.length(), tmp.str());

        destroyThorRow(result);
    }