How to save data in memory to use ?

sonichy

I am writing a process manager, I need to save data to calculate [procCpuTime - procCpuTime0] and else by pid.

void MainWindow::update()
{
    QDir dir("/proc");
    QFileInfoList FIL;
    FIL = dir.entryInfoList();
    for (int i = 0; i < FIL.size(); i++) {
        if (FIL.at(i).isDir()) {
            QString spid = FIL.at(i).fileName();
            QFile file;
            file.setFileName("/proc/" + spid + "/stat");
            file.open(QIODevice::ReadOnly);
            s = file.readLine();
            file.close();
            SL = s.split(" ");
            long utime = SL.at(13).toLong();
            long stime = SL.at(14).toLong();
            long cutime = SL.at(15).toLong();
            long cstime = SL.at(16).toLong();
            long procCpuTime = utime + stime + cutime + cstime;
            int uProc = 100 * (procCpuTime - procCpuTime0) / (totalCpuTime - totalCpuTime0);
            QTableWidgetItem *TWI = new QTableWidgetItem(QString::number(uProc) + "%");
            TWI->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
            ui->tableWidget->setItem(j, 2, TWI);
        }
    }
    procCpuTime0 = procCpuTime;
}

替代文字

jsulm

@sonichy QMap or QHash with pid as key...

VRonin

The model is the place where you save the data already just store it in different roles:

QTableWidgetItem *TWI = new QTableWidgetItem;
TWI->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
TWI->setData(Qt::EditRole,uProc);
TWI->setData(Qt::UserRole,procCpuTime0);
TWI->setData(Qt::UserRole+1,procCpuTime );
TWI->setData(Qt::UserRole+2,totalCpuTime0);
TWI->setData(Qt::UserRole+3,totalCpuTime );

sonichy

@sonichy Use QList<QStringList> to save data right now.

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Solved How to save data in memory to use ?