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Two qprocess using the same variable

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  • M Offline
    M Offline
    Magnum
    wrote on last edited by
    #1

    Hello,

    Can anyone tell me why this code stops the first bash shell??

    @int main(int argc, char* argv[]) {
    QApplication app(argc, argv);
    app.setApplicationName("QonsoleKeyEvents");
    app.setOrganizationName("objectlearning.net");
    QProcess* aProcess = new QProcess();
    aProcess->start("bash", QStringList("-i"), QIODevice::ReadWrite);
    aProcess = new QProcess();
    aProcess->start("bash", QStringList("-i"), QIODevice::ReadWrite);
    return app.exec();
    }
    @

    What would be the proper way to save references to multiple qprocess??

    Thanks.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      What do you mean by "stops the first bash shell" ?

      Use one variable per QProcess

      You also have a double memory leak. You don't delete your two QProcess and you lose the address of the first.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • M Offline
        M Offline
        Magnum
        wrote on last edited by
        #3

        I mean that when you execute this code you get the following:

        bq. [1]+ Stopped

        I did it on purpose, I only wanted to know if the first process was stopped.
        I don't get why this happens.
        Any idea?

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          How do you get this message ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • M Offline
            M Offline
            Magnum
            wrote on last edited by
            #5

            The problem only happens if the binary is executed from the terminal. I'm not sure why this happens.

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              Are you sure that the Stopped is about the bash session started with QProcess ?

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • M Offline
                M Offline
                Magnum
                wrote on last edited by
                #7

                I think so. Anyway, I executed it from dolphin and works flawlessly.

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  So if you consider this solved, could you update the thread title ?

                  Don't forget to clean your code of the memory leaks

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • M Offline
                    M Offline
                    Magnum
                    wrote on last edited by
                    #9

                    I don't think I must mark it as solved because I don't know the real cause.

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