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Problem with disassembler and SIGILL signal

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  • A Amaury

    Thank you I was a little disapointed by this function and wasn't able to say if that was correct or not

    kshegunovK Offline
    kshegunovK Offline
    kshegunov
    Moderators
    wrote on last edited by
    #48

    @Amaury
    Also you can cut the code that you suspect and see if the problem manifest itself. I wouldn't in principle initialize anything outside of main (like your database) if I can help it, that way I stumble on to less errors in my code, and thus makes for an easier time debugging. Still, my best guess is there some subtle architecture mismatch, so the compiler generates a mostly valid code. However I have no clue how to really test that at present.

    Read and abide by the Qt Code of Conduct

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    • A Offline
      A Offline
      Amaury
      wrote on last edited by Amaury
      #49

      By using step I can't see any bugs so that's not here.

      By the way I'm using the memory check Valgind through QT and when I do a memory check thats starting but I got this message after a few seconds :

      Analyzing memory of /home/pi/Desktop/SmartDevice/SauvegardeRASPI/New/build-SmartDevice_QT_V11-Desktop-Debug/SmartDevice_QT_V11
          <frame>
            <ip>0x485F6F0</ip>
            <obj>/usr/lib/arm-linux-gnueabihf/libarmmem.so</obj>
          </frame>
        </stack>
      Analyzing finished.
      ** Unknown error **
      

      I followed the steps here :
      http://doc.qt.io/qtcreator/creator-valgrind-overview.html
      http://doc.qt.io/qtcreator/creator-analyzer.html

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      • A Offline
        A Offline
        Amaury
        wrote on last edited by
        #50

        @kshegunov
        If I don't declare it there where could I do it ? As said before that's not a code that I did myself and I don't really understand the way that it works (how the "path" is used thorugh the different pages ...

        kshegunovK 1 Reply Last reply
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        • A Amaury

          @kshegunov
          If I don't declare it there where could I do it ? As said before that's not a code that I did myself and I don't really understand the way that it works (how the "path" is used thorugh the different pages ...

          kshegunovK Offline
          kshegunovK Offline
          kshegunov
          Moderators
          wrote on last edited by
          #51

          @Amaury said in Problem with disassembler and SIGILL signal:

          If I don't declare it there where could I do it

          From the looks of it you can safely put the db initialization in main (after you've created the application object). As for the string, it's okay to leave it as a global.

          Read and abide by the Qt Code of Conduct

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          • A Offline
            A Offline
            Amaury
            wrote on last edited by Amaury
            #52

            @kshegunov

            I tried like that but that doesn't work got a qualified-id in declaration before '(' token error

            static const QString path = "localhost";
            
            int main(int argc, char *argv[])
            {
                QApplication a(argc, argv);
                DataBase MemTampon::Db(path);
            .
            .
            .
            }
            

            Even with the string inside the main ...

            kshegunovK 1 Reply Last reply
            0
            • A Amaury

              @kshegunov

              I tried like that but that doesn't work got a qualified-id in declaration before '(' token error

              static const QString path = "localhost";
              
              int main(int argc, char *argv[])
              {
                  QApplication a(argc, argv);
                  DataBase MemTampon::Db(path);
              .
              .
              .
              }
              

              Even with the string inside the main ...

              kshegunovK Offline
              kshegunovK Offline
              kshegunov
              Moderators
              wrote on last edited by
              #53

              It should be:

              DataBase Db(path);
              

              You're not initializing a static anymore.

              Read and abide by the Qt Code of Conduct

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              • A Offline
                A Offline
                Amaury
                wrote on last edited by Amaury
                #54

                The problem is if I don't use a static I can't do the calls for my other functions in my Database class..

                const QString path = "localhost";
                
                int main(int argc, char *argv[])
                {
                
                    QApplication a(argc, argv);
                
                
                    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
                    QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
                
                    QTranslator *qtTranslator = new QTranslator;
                        qtTranslator->load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
                        a.installTranslator(qtTranslator);
                
                        DataBase Db(path);
                        DataBase::Db.aff_Temperature();
                        DataBase::Db.aff_Humidite();
                        DataBase::Db.aff_Puissance();
                        DataBase::Db.aff_Nom_SD();
                
                    MainWindow w;
                    w.show();
                
                
                    return a.exec();
                }
                

                (By the way I've delete the MemTampon that I agree was useless ... )

                EDIT : My bad I'm dumb I think ^^ for the main it's alright just had to cut out the "DataBase::"

                But I'm doing reference to the "Db" inside another page but the call doesn't work...

                 if (Db.isOpen())
                    {
                
                        Temp  = Db.aff_Temperature();
                        Humid  = Db.aff_Humidite();
                        Puiss  = Db.aff_Puissance();
                        Nom = Db.aff_Nom_SD();
                        Axe_X = Db.aff_AxeX();
                        Axe_Y = Db.aff_AxeY();
                        Axe_Z = Db.aff_AxeZ();
                
                
                kshegunovK 1 Reply Last reply
                0
                • A Amaury

                  The problem is if I don't use a static I can't do the calls for my other functions in my Database class..

                  const QString path = "localhost";
                  
                  int main(int argc, char *argv[])
                  {
                  
                      QApplication a(argc, argv);
                  
                  
                      QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
                      QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
                  
                      QTranslator *qtTranslator = new QTranslator;
                          qtTranslator->load("qt_" + QLocale::system().name(), QLibraryInfo::location(QLibraryInfo::TranslationsPath));
                          a.installTranslator(qtTranslator);
                  
                          DataBase Db(path);
                          DataBase::Db.aff_Temperature();
                          DataBase::Db.aff_Humidite();
                          DataBase::Db.aff_Puissance();
                          DataBase::Db.aff_Nom_SD();
                  
                      MainWindow w;
                      w.show();
                  
                  
                      return a.exec();
                  }
                  

                  (By the way I've delete the MemTampon that I agree was useless ... )

                  EDIT : My bad I'm dumb I think ^^ for the main it's alright just had to cut out the "DataBase::"

                  But I'm doing reference to the "Db" inside another page but the call doesn't work...

                   if (Db.isOpen())
                      {
                  
                          Temp  = Db.aff_Temperature();
                          Humid  = Db.aff_Humidite();
                          Puiss  = Db.aff_Puissance();
                          Nom = Db.aff_Nom_SD();
                          Axe_X = Db.aff_AxeX();
                          Axe_Y = Db.aff_AxeY();
                          Axe_Z = Db.aff_AxeZ();
                  
                  
                  kshegunovK Offline
                  kshegunovK Offline
                  kshegunov
                  Moderators
                  wrote on last edited by kshegunov
                  #55

                  @Amaury said in Problem with disassembler and SIGILL signal:

                  if I don't use a static I can't do the calls for my other functions in my Database class..

                  Why not, you can always get the opened database (it's default named) by calling QSqlDatabase db = QSqlDatabase::database(). The QSqlDatabase class already keeps track of the opened connections for you.

                  Read and abide by the Qt Code of Conduct

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                  1
                  • A Offline
                    A Offline
                    Amaury
                    wrote on last edited by Amaury
                    #56

                    So what you mean is that for now my function Database Db(path) is just to specify if the connection is opened or not ?

                    kshegunovK 1 Reply Last reply
                    0
                    • A Amaury

                      So what you mean is that for now my function Database Db(path) is just to specify if the connection is opened or not ?

                      kshegunovK Offline
                      kshegunovK Offline
                      kshegunov
                      Moderators
                      wrote on last edited by
                      #57

                      @Amaury
                      Eh, yes I suppose you could say that, currently in the constructor of your object you open the database:

                      db = QSqlDatabase::addDatabase("QMYSQL");
                      db.setHostName("localhost");
                      // ...
                      

                      so it serves as database initialization. You can do that in main() too, but that's another point. After the constructor's run, you can get the opened database the way I mentioned in my previous post. In principle it's not really needed to have a "database manager" with Qt, because the QSqlDatabase class already keeps track of the connections, as mentioned. You can look up the two functions QSqlDatabase::addDatabase and QSqlDatabase::database in the docs and I think it'll become clear from the examples there.

                      Read and abide by the Qt Code of Conduct

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                      • A Offline
                        A Offline
                        Amaury
                        wrote on last edited by
                        #58

                        Alright I'm going to check and change some things to see if that deletes the Sigill signal (hope so) I come back to give you feedback.

                        Thanks !

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                        0
                        • A Offline
                          A Offline
                          Amaury
                          wrote on last edited by
                          #59

                          Hi there ,

                          I'm back again for some feedback , I changed the way I use my Database, I'm still connecting the same way, But all my functions that were in my class get swith into the only page that need those instructions .
                          That Way I Just connect through my databse page and just make a Signal Slot use when I need it.

                          That said , my problem isn't solve for now I though maybe it was the Databse but seems not , maybe it's my refresh timer for my UI that creates crashes , anyway I'm still triying to find the problem..

                          If anyone could give me a clue for Valgrind to work , it's crashing a few seconds after starting the analysis and I just have the message that I post earlier.

                          That's a big post thank's for help and if I can't get in touch happy Christmas holidays.

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