使用modbus导致内存溢出

bigWave

用timer 定时50毫秒向串口发送数据，内存在一直上涨

    if (auto *reply = modbusdevice->sendReadRequest(mbreg[flashpage1].mbunit, 1)) {
        if (!reply->isFinished())
        {

            connect(reply, &QModbusReply::finished, this, &MainWindow::readReady);
             hadsendread = 1;
                 }
        else
            delete reply; // broadcast replies return immediately
    } else {

        ui->textEdit->append("连接异常："+modbusdevice->errorString());
        ui->textEdit->setStyleSheet("background-color:WHITE;");


         reply->deleteLater();
       //  qDebug()<<reply->objectName();
    }

这个是槽函数

void MainWindow::readReady()//刷新数据，按钮
{
    quint16 a, b,c,d;
    QModbusReply *reply = qobject_cast<QModbusReply *>(sender());
    if (!reply)
        {

        return;

        }

   if(mbreg[flashpage1].StartAdress == reply->result().startAddress())
    {mbreg[flashpage1].mbunit = reply->result();}




       b = mbreg[flashpage1].mbunit.value(0);
       a = mbreg[flashpage1].mbunit.value(1);
       d = mbreg[flashpage1].mbunit.value(2);
       c = mbreg[flashpage1].mbunit.value(3);
       mbreg[flashpage1].mbcurrentvalue = datadisplay(a,b,mbreg[flashpage1].mbdigit,mbreg[flashpage1].displaypoint);


       mbreg[flashpage1].HL = a;
       mbreg[flashpage1].LL = b;


//datadiaplay 1,数据低位，2数据高位，3，数据类型，4，小数点显示位置
        switch (flashpage1) {

        //case 0: ui->FHalfStrip->setText(datadisplay(a,b,"32",2));break;
        case 1:machinealarm();break;
        case 2:machinealarm();break;
        case 3:machinealarm();break;
        case 4:machinestate();break;
        case 5:tablewightstate();break;
        case 6:tablewightstate();break;
        case 7:if(mbreg[flashpage1].mbcurrentvalue != mbreg[flashpage1].mboldvalue){ui->DT32510->setText(mbreg[flashpage1].mbcurrentvalue);mbreg[flashpage1].mboldvalue = mbreg[flashpage1].mbcurrentvalue;};break;
        case 8:if(mbreg[flashpage1].mbcurrentvalue != mbreg[flashpage1].mboldvalue){ui->DT32496->setText(mbreg[flashpage1].mbcurrentvalue);mbreg[flashpage1].mboldvalue = mbreg[flashpage1].mbcurrentvalue;};break;
        case 9:if(mbreg[flashpage1].mbcurrentvalue != mbreg[flashpage1].mboldvalue){ui->DT32464->setText(mbreg[flashpage1].mbcurrentvalue);mbreg[flashpage1].mboldvalue = mbreg[flashpage1].mbcurrentvalue;};break;
        case 10:if(mbreg[flashpage1].mbcurrentvalue != mbreg[flashpage1].mboldvalue){ui->DT32466->setText(mbreg[flashpage1].mbcurrentvalue);mbreg[flashpage1].mboldvalue = mbreg[flashpage1].mbcurrentvalue;};break;
        case 11:if(mbreg[flashpage1].mbcurrentvalue != mbreg[flashpage1].mboldvalue){ui->DT32458->setText(mbreg[flashpage1].mbcurrentvalue);mbreg[flashpage1].mboldvalue = mbreg[flashpage1].mbcurrentvalue;};break;
        case 12:break;
        case 13:  break;
        case 2003: filedialog->buttonlock+=1;if(filedialog->buttonlock>1){filedialog->bottonenable();};break;
        case 2101:dialog_datelock->flashunlockcode();break;





        default:break;

        }





        flashpage1 += 1;


        if(flashpage1 >= (ypageindex+pagenumber))
                {
                    flashpage1 = ypageindex;
                }



    hadsendread = 0;

    if(repageindex ==1 )
    {
        flashpage1 = 0;
        ypageindex = 0;
        pagenumber = ValueTotal_mianwindow;
        repageindex = 0;
    }

    reply->deleteLater();
    reply=NULL;



}

bigWave

代码是单线程的，使用qApp->processEvents(); reply=NULL, 也没有让内存停止上涨