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function crashes

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  • mrjjM mrjj

    Hi
    For second app, maybe is is empty ?
    Something like
    seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());

    might crash if seriesList is empty or i is out of bounds.
    I would add more checks and see what is going on.

    Taz742T Offline
    Taz742T Offline
    Taz742
    wrote on last edited by
    #3

    @mrjj
    seriesList have 4 items.

    Do what you want.

    1 Reply Last reply
    1
    • S saber

      here is the function to update cpu information .
      when i open this app 2 at the same time it crashes.

      void ResourcesPage::updateCpuChart()
      {
          static int second = 0;
      
          QList<int> cpuPercents = im->getCpuPercents();
      
          QVector<QLineSeries *> seriesList = cpuChart->getSeriesList();
      
          for (int j = 0; j < seriesList.count(); j++){
              int p = cpuPercents.at(j+1);
      
              for (int i = 0; i < (second < 61 ? second : 61); i++)
                  seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());
      
              seriesList.at(j)->insert(0, QPointF(0, p));
      
              seriesList.at(j)->setName(QString("CPU%1 %2%").arg(j+1).arg(p));
      
              if(second > 61) seriesList.at(j)->removePoints(61, 1);
          }
      
          second++;
      
          cpuChart->setSeriesList(seriesList);
      }
      

      HERE IS DEBUG OUTPUT OF THIS ERROR.

      0_1525770909776_Screenshot_2018-05-07_20-06-38.png

      Taz742T Offline
      Taz742T Offline
      Taz742
      wrote on last edited by Taz742
      #4

      @saber said in function crashes:

          for (int i = 0; i < (second < 61 ? second : 61); i++)
              seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());
      

      maybe

          for (int i = 0; i < std::min(std::min(second, seriesList.at(j)->points().size() - 1), 61); i++)
              seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());
      

      ?

      Do what you want.

      S 1 Reply Last reply
      2
      • Taz742T Taz742

        @saber said in function crashes:

            for (int i = 0; i < (second < 61 ? second : 61); i++)
                seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());
        

        maybe

            for (int i = 0; i < std::min(std::min(second, seriesList.at(j)->points().size() - 1), 61); i++)
                seriesList.at(j)->replace(i, (i+1), seriesList.at(j)->at(i).y());
        

        ?

        S Offline
        S Offline
        saber
        wrote on last edited by
        #5

        @Taz742
        not working .
        two same window crash the app.

        mrjjM Taz742T 2 Replies Last reply
        0
        • S saber

          @Taz742
          not working .
          two same window crash the app.

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #6

          @saber
          Hi
          Why not debug it then?
          Should be easy to spot what is going on in debugger since you seem to hard crash.

          1 Reply Last reply
          4
          • S saber

            @Taz742
            not working .
            two same window crash the app.

            Taz742T Offline
            Taz742T Offline
            Taz742
            wrote on last edited by
            #7

            @saber
            When window crashed what is 'i'-s value?

            Do what you want.

            S 1 Reply Last reply
            1
            • Taz742T Taz742

              @saber
              When window crashed what is 'i'-s value?

              S Offline
              S Offline
              saber
              wrote on last edited by
              #8

              @Taz742
              0_1526028838554_qt.png

              mrjjM 1 Reply Last reply
              0
              • S saber

                @Taz742
                0_1526028838554_qt.png

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #9

                @saber
                I put my money you crash in the
                seriesList.at(j)->at(i).y() part.

                S 1 Reply Last reply
                1
                • mrjjM mrjj

                  @saber
                  I put my money you crash in the
                  seriesList.at(j)->at(i).y() part.

                  S Offline
                  S Offline
                  saber
                  wrote on last edited by
                  #10

                  @mrjj
                  sorry.
                  not a clue ,how to fix or what's the error.

                  mrjjM 1 Reply Last reply
                  0
                  • S saber

                    @mrjj
                    sorry.
                    not a clue ,how to fix or what's the error.

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #11

                    @saber
                    Hi
                    I would insert qDebug() for size() of all lists involved and
                    also dump the values of i and j.
                    Its hard to guess at since normally one inspects the runtime variables in the debugger to see if all
                    are within bounds.

                    what does seriesList.at(j) return ? a QString or list ?

                    S 1 Reply Last reply
                    0
                    • mrjjM mrjj

                      @saber
                      Hi
                      I would insert qDebug() for size() of all lists involved and
                      also dump the values of i and j.
                      Its hard to guess at since normally one inspects the runtime variables in the debugger to see if all
                      are within bounds.

                      what does seriesList.at(j) return ? a QString or list ?

                      S Offline
                      S Offline
                      saber
                      wrote on last edited by
                      #12

                      @mrjj
                      this
                      0_1526034483163_qw.png

                      mrjjM 1 Reply Last reply
                      0
                      • S saber

                        @mrjj
                        this
                        0_1526034483163_qw.png

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by mrjj
                        #13

                        @saber
                        Ok so its a Qlineseries pointer
                        Looking at its replace, it seems to be this one ?
                        void QXYSeries::replace(int index, qreal newX, qreal newY)

                        anyway, you can split to multiple statements so its more clear which part that crashes.

                        for (int i = 0; i < (second < 61 ? second : 61); i++) {
                        auto Line= seriesList.at(j);
                        auto value = seriesList.at(j)->at(i).y();
                        Line->replace(i, (i+1),value );
                        }

                        S 1 Reply Last reply
                        0
                        • mrjjM mrjj

                          @saber
                          Ok so its a Qlineseries pointer
                          Looking at its replace, it seems to be this one ?
                          void QXYSeries::replace(int index, qreal newX, qreal newY)

                          anyway, you can split to multiple statements so its more clear which part that crashes.

                          for (int i = 0; i < (second < 61 ? second : 61); i++) {
                          auto Line= seriesList.at(j);
                          auto value = seriesList.at(j)->at(i).y();
                          Line->replace(i, (i+1),value );
                          }

                          S Offline
                          S Offline
                          saber
                          wrote on last edited by
                          #14

                          @mrjj
                          sorry .i have no idea how to do that ,as our lead developer is gone for now.
                          so we are in short of intelligences .
                          here is the app .if you have some time ........
                          CoreBox

                          mrjjM 1 Reply Last reply
                          0
                          • S saber

                            @mrjj
                            sorry .i have no idea how to do that ,as our lead developer is gone for now.
                            so we are in short of intelligences .
                            here is the app .if you have some time ........
                            CoreBox

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by
                            #15

                            @saber
                            Hi
                            Will it work on any linux?
                            Also, you are trying to fix the
                            Known Bugs
                            Opening two dashboard ,crash the whole app. <<< -- that one ?

                            S 1 Reply Last reply
                            0
                            • mrjjM mrjj

                              @saber
                              Hi
                              Will it work on any linux?
                              Also, you are trying to fix the
                              Known Bugs
                              Opening two dashboard ,crash the whole app. <<< -- that one ?

                              S Offline
                              S Offline
                              saber
                              wrote on last edited by saber
                              #16

                              @mrjj
                              yes it wiil run on any linux. as far as i know.
                              because it has little dependences(qt,file,libmagic-dev/libmagic-mgc/libmagic1)
                              and yes for now i want to fix the "Opening two dashboard ,crash the whole app"
                              but it also have other bugs here

                              my way to fix all this and add this feature by opening issue in qt forum.
                              as i don't know the high level coding.

                              i was intendant to do a invitation to join this project in this forum .but i was woried as it will be right way to that.
                              if you have some time to fix this issue........

                              mrjjM 1 Reply Last reply
                              0
                              • S saber

                                @mrjj
                                yes it wiil run on any linux. as far as i know.
                                because it has little dependences(qt,file,libmagic-dev/libmagic-mgc/libmagic1)
                                and yes for now i want to fix the "Opening two dashboard ,crash the whole app"
                                but it also have other bugs here

                                my way to fix all this and add this feature by opening issue in qt forum.
                                as i don't know the high level coding.

                                i was intendant to do a invitation to join this project in this forum .but i was woried as it will be right way to that.
                                if you have some time to fix this issue........

                                mrjjM Offline
                                mrjjM Offline
                                mrjj
                                Lifetime Qt Champion
                                wrote on last edited by
                                #17

                                @saber
                                Ok, seems like a big project.
                                What ever happen to the person that wrote the code ?

                                S 1 Reply Last reply
                                0
                                • mrjjM mrjj

                                  @saber
                                  Ok, seems like a big project.
                                  What ever happen to the person that wrote the code ?

                                  S Offline
                                  S Offline
                                  saber
                                  wrote on last edited by
                                  #18

                                  @mrjj
                                  it is not a bigg project.
                                  me and my friend made this app.
                                  my view , his code. he is has no interest and time for it now.
                                  so what you are thinking to .....

                                  mrjjM 1 Reply Last reply
                                  0
                                  • S saber

                                    @mrjj
                                    it is not a bigg project.
                                    me and my friend made this app.
                                    my view , his code. he is has no interest and time for it now.
                                    so what you are thinking to .....

                                    mrjjM Offline
                                    mrjjM Offline
                                    mrjj
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #19

                                    @saber
                                    Ok, so you Designed it and he programmed it. sweet.
                                    Currently im spring cleaning pc so i have no linux around before monday.

                                    But if its easy to build, i might have a look at that bug next week.

                                    That said i have huge project at work so I cant help program it
                                    like project member.

                                    S 1 Reply Last reply
                                    0
                                    • mrjjM mrjj

                                      @saber
                                      Ok, so you Designed it and he programmed it. sweet.
                                      Currently im spring cleaning pc so i have no linux around before monday.

                                      But if its easy to build, i might have a look at that bug next week.

                                      That said i have huge project at work so I cant help program it
                                      like project member.

                                      S Offline
                                      S Offline
                                      saber
                                      wrote on last edited by
                                      #20

                                      @mrjj
                                      thanks for helping.
                                      it is easy to build .just the 2 dependencies .
                                      thats ok ,if you could not join as a project member.
                                      programar like you need little time to solve this listed problems.

                                      looking forward to hear for you.

                                      mrjjM 1 Reply Last reply
                                      0
                                      • S saber

                                        @mrjj
                                        thanks for helping.
                                        it is easy to build .just the 2 dependencies .
                                        thats ok ,if you could not join as a project member.
                                        programar like you need little time to solve this listed problems.

                                        looking forward to hear for you.

                                        mrjjM Offline
                                        mrjjM Offline
                                        mrjj
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #21

                                        @saber
                                        Hi
                                        I assume for the dependencies , i can just apt-get ?

                                        S 1 Reply Last reply
                                        0
                                        • mrjjM mrjj

                                          @saber
                                          Hi
                                          I assume for the dependencies , i can just apt-get ?

                                          S Offline
                                          S Offline
                                          saber
                                          wrote on last edited by
                                          #22

                                          @mrjj
                                          just apt-get package name.
                                          remember to install qt-packages.

                                          S 1 Reply Last reply
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