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    Unsolved QStateMachine segmentation fault

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    • R
      rspock last edited by

      Hi guys,

      I've been using QStateMachine to controll a machine process. This is the code:

      this->dispenserCycleFsm = new QStateMachine(this);
      
          //general dispenser state machine
          LOGINFO("Inizializzazione macchina a stati del dispenser");
      
          cycling=new DispenserState(tr("cycling"),dispenserData);
          stopped = new QFinalState();
          finished = new QFinalState();
          /*
          stopped = new DispenserFinalState(tr("stopped"),dispenserData);
          finished = new DispenserFinalState(tr("finished"),dispenserData);
          */
          cycling_movingRequest=new TurnstileMovingState(tr("moving request"),dispenserData,cycling);
          cycling_fcInCheckDelay = new TimerState(tr("fcIn check delay"),Params::Instance()->CYCLE_FCIN_DELAY,dispenserData,cycling);
          cycling_waitingFcIn=new TurnstileStoppedOnExit(tr("waitingFcIn"),dispenserData,cycling);
          cycling_waitProductOut=new DispenserState(tr("waitProductOut"),dispenserData,cycling);
          cycling->setInitialState(cycling_movingRequest);
      
      
          connect(stopped,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
          connect(cycling_movingRequest,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
          connect(cycling_fcInCheckDelay,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
          connect(cycling_waitingFcIn,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
          connect(cycling_waitProductOut,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
          connect(finished,SIGNAL(stateChanged(QString)),this,SLOT(setDispenserStateString(QString)));
      
          //condizioni di stop
          cycling->addTransition(new SignalTransition("",this,SIGNAL(stopTurnstile()),stopped));
          connect(stopped,SIGNAL(entered()),this,SLOT(cycleStop()));
      
          cycling_movingRequest->addTransition(new OutputOnTransition(dispenserData.hwBoardAddress,dispenserData.motorOut,"out on",cycling_fcInCheckDelay));
          cycling_fcInCheckDelay->addTransition(new SignalTransition("",cycling_fcInCheckDelay,SIGNAL(triggerd()),cycling_waitingFcIn));
          cycling_waitingFcIn->addTransition(new InputOnTransition(dispenserData.hwBoardAddress,dispenserData.fcIn,"fc on",cycling_waitProductOut));
      
          cycling_waitProductOut->addTransition(new InputOffTransition(dispenserData.vuBoardAddress,dispenserData.outputFcIn," out fc off",finished));
          cycling_waitProductOut->addTransition(new InputOffTransition(dispenserData.vuBoardAddress2,dispenserData.outputFcIn2," out fc off",finished));
          cycling_waitProductOut->addTransition(new SignalTransition("",this,SIGNAL(forceCycleEnd()),finished));
      
          connect(cycling_waitProductOut,SIGNAL(entered()),this,SLOT(checkForceCycleEnd()));
      
          connect(finished,SIGNAL(entered()),this,SLOT(cycleEnd()));
      
          dispenserCycleFsm->addState(stopped);
          dispenserCycleFsm->addState(cycling);
          dispenserCycleFsm->addState(finished);
          dispenserCycleFsm->setInitialState(cycling);
      

      but sometimes I have a segmentation fault when the QFinalState is reached.

      Segmentation Stack Trace

      I'm using qt 4.8.

      Thanks to all

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      • SGaist
        SGaist Lifetime Qt Champion last edited by

        Hi,

        You should run your application and then post the backtrace here.

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

        1 Reply Last reply Reply Quote 0
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