68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
#include "mainwindow.h"
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#include <QApplication>
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#include <QMessageBox>
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#include <QProcess>
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#include <QPushButton>
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#include <QFile>
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int main(int argc, char *argv[]){
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QApplication a(argc, argv);
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bool isLock = false;
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int pid = 0;
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QFile lockFile(DAQLockFile);
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if( lockFile.open(QIODevice::Text | QIODevice::ReadOnly) ){
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QTextStream in(&lockFile);
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QString line = in.readLine();
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isLock = line.toInt();
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lockFile.close();
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}
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QFile pidFile(PIDFile);
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if( pidFile.open(QIODevice::Text | QIODevice::ReadOnly)){
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QTextStream in(&pidFile);
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QString line = in.readLine();
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pid = line.toInt();
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pidFile.close();
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}
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if( isLock ) {
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qDebug() << "The DAQ program is already opened. PID is " + QString::number(pid) + ", and delete the " + DAQLockFile ;
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QMessageBox msgBox;
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msgBox.setWindowTitle("Oopss....");
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msgBox.setText("The DAQ program is already opened. PID is " + QString::number(pid) + "\n You can kill the procee by \"kill -9 <pid>\" and delete the " + DAQLockFile + "\n or click the \"Kill\" button");
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msgBox.setIcon(QMessageBox::Information);
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QPushButton * kill = msgBox.addButton("Kill", QMessageBox::AcceptRole);
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msgBox.setStandardButtons(QMessageBox::Ok);
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msgBox.setDefaultButton(QMessageBox::Ok);
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msgBox.exec();
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if(msgBox.clickedButton() == kill){
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remove(DAQLockFile);
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QProcess::execute("kill", QStringList() << "-9" << QString::number(pid));
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}else{
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return 0;
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}
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}
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lockFile.open(QIODevice::Text | QIODevice::WriteOnly);
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lockFile.write( "1" );
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lockFile.close();
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pidFile.open(QIODevice::Text | QIODevice::WriteOnly);
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pidFile.write( QString::number(QCoreApplication::applicationPid() ).toStdString().c_str() );
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pidFile.close();
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MainWindow w;
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w.show();
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return a.exec();
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}
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