Package xdevs.core.simulation

Class AbstractSimulator

  • Direct Known Subclasses:
    Coordinator, Simulator
    public abstract class AbstractSimulator
extends Object
    This class represents the abstraction of a parallel DEVS simulator, in xDEVS style. The simulator is responsible for the simulation of a DEVS model, and it is composed of a simulation clock and the model to simulate. The simulator is responsible for the initialization, execution and termination of the simulation.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected SimulationClock clock
      The simulation clock of the simulator.
      protected double tL
      The time of the last event.
      protected double tN
      The time of the next event.

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      abstract void clear()
      Empties the event list at the ports of the associated model.
      abstract void deltfcn()
      Executes one of the transition functions of the DEVS simulation, depending on the current state of the model and whether there are new events or not.
      abstract void exit()
      This is a special function, out of the DEVS formalism, that allows to realize some actions when the simulation ends.
      SimulationClock getClock()
      Gets the simulation clock of the simulator.
      abstract Component getModel()
      Gets the associated model of the simulator.
      double getTL()  
      double getTN()
      Gets the time of the next event.
      abstract void initialize()
      Initializes the simulator and the associated model.
      abstract void lambda()
      Executes the output function of the DEVS simulation.
      void setTL​(double tL)
      Sets the time of the last event.
      void setTN​(double tN)
      Sets the time of the next event.
      abstract double ta()
      Executes the time advance mechanism of the DEVS simulation.

    • Field Detail

      • clock

        protected SimulationClock clock
        The simulation clock of the simulator.

      • tL

        protected double tL
        The time of the last event.

      • tN

        protected double tN
        The time of the next event.

    • Constructor Detail

      • AbstractSimulator

        public AbstractSimulator​(SimulationClock clock)
        Creates a new simulator with the given simulation clock.
        Parameters:
        clock - the simulation clock of the simulator.

    • Method Detail

      • initialize

        public abstract void initialize()
        Initializes the simulator and the associated model. This is not part of the DEVS formalism, but it is a necessary step to prepare the simulator for the simulation.

      • exit

        public abstract void exit()
        This is a special function, out of the DEVS formalism, that allows to realize some actions when the simulation ends.

      • ta

        public abstract double ta()
        Executes the time advance mechanism of the DEVS simulation.
        Returns:
        the new DEVS sigma.

      • lambda

        public abstract void lambda()
        Executes the output function of the DEVS simulation.

      • deltfcn

        public abstract void deltfcn()
        Executes one of the transition functions of the DEVS simulation, depending on the current state of the model and whether there are new events or not.

      • clear

        public abstract void clear()
        Empties the event list at the ports of the associated model.

      • getModel

        public abstract Component getModel()
        Gets the associated model of the simulator.
        Returns:
        the associated model of the simulator.

      • getTL

        public double getTL()

      • setTL

        public void setTL​(double tL)
        Sets the time of the last event.
        Parameters:
        tL - the time of the last event.

      • getTN

        public double getTN()
        Gets the time of the next event.
        Returns:
        the time of the next event.

      • setTN

        public void setTN​(double tN)
        Sets the time of the next event.
        Parameters:
        tN - the time of the next event.

      • getClock

        public SimulationClock getClock()
        Gets the simulation clock of the simulator.
        Returns:
        the simulation clock of the simulator.