882 lines
23 KiB
Java
882 lines
23 KiB
Java
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer. 2. Redistributions in
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* binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution. 3. Neither the name of the
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* Institute nor the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: Simulation.java,v 1.43 2009/03/02 09:46:19 fros4943 Exp $
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*/
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package se.sics.cooja;
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import java.util.*;
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import org.apache.log4j.Logger;
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import org.jdom.*;
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import se.sics.cooja.dialogs.*;
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/**
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* A simulation consists of a number of motes and mote types.
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*
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* The motes in the simulation are ticked every millisecond.
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*
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* A simulation is observable:
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* changed simulation state, added or deleted motes etc are observed.
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* To track mote changes, observe the mote (interfaces) itself.
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*
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* @author Fredrik Osterlind
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*/
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public class Simulation extends Observable implements Runnable {
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private Vector<Mote> motes = new Vector<Mote>();
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private Vector<MoteType> moteTypes = new Vector<MoteType>();
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private int delayTime = 0;
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private long currentSimulationTime = 0;
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private int tickTime = 1;
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private String title = null;
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private RadioMedium currentRadioMedium = null;
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private static Logger logger = Logger.getLogger(Simulation.class);
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private boolean isRunning = false;
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private boolean stopSimulation = false;
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private Thread simulationThread = null;
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private GUI myGUI = null;
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private long randomSeed = 123456;
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private boolean randomSeedGenerated = false;
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private int maxMoteStartupDelay = 1000;
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private Random randomGenerator = new Random();
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// Tick observable
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private class TickObservable extends Observable {
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private void allTicksPerformed() {
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setChanged();
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notifyObservers();
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}
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}
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private TickObservable tickObservable = new TickObservable();
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/**
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* Add tick observer. This observer is notified once every tick loop, that is,
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* when all motes have been ticked.
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*
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* @see #deleteTickObserver(Observer)
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* @param newObserver
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* New observer
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*/
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public void addTickObserver(Observer newObserver) {
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tickObservable.addObserver(newObserver);
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}
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/**
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* Delete an existing tick observer.
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*
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* @see #addTickObserver(Observer)
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* @param observer
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* Observer to delete
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*/
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public void deleteTickObserver(Observer observer) {
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tickObservable.deleteObserver(observer);
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}
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protected void scheduleEventUnsafe(TimeEvent e, long time) {
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eventQueue.addEvent(e, time);
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}
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/**
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* Schedule event to be handled by event loop.
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*
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* @param e Event
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* @param time Simulated time
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*/
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public void scheduleEvent(TimeEvent e, long time) {
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if (Thread.currentThread() == simulationThread) {
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eventQueue.addEvent(e, time);
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} else {
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eventQueue.addEventUnsorted(e, time);
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}
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}
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private EventQueue eventQueue = new EventQueue();
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private Mote[] emulatedMoteArray;
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private TimeEvent tickemulatedMotesEvent = new TimeEvent(0) {
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public void execute(long t) {
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/*logger.info("MSP motes tick at: " + t);*/
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if (emulatedMoteArray.length == 0) {
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return;
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}
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/* Tick MSP motes */
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boolean wantMoreTicks = true;
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while (wantMoreTicks) {
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/* Tick all MSP motes until none need more ticks */
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wantMoreTicks = false;
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for (Mote element : emulatedMoteArray) {
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if (element.tick(currentSimulationTime)) {
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wantMoreTicks = true;
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}
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}
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}
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/* Reschedule MSP motes */
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scheduleEventUnsafe(this, t+1);
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}
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};
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private Mote[] moteArray;
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private TimeEvent tickMotesEvent = new TimeEvent(0) {
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public void execute(long t) {
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/*logger.info("Contiki motes tick at: " + t);*/
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if (moteArray.length == 0) {
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return;
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}
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/* Tick Contiki motes */
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for (Mote mote : moteArray) {
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mote.tick(t);
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}
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/* Reschedule Contiki motes */
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scheduleEventUnsafe(this, t+1);
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}
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};
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private TimeEvent delayEvent = new TimeEvent(0) {
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public void execute(long t) {
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/*logger.info("Delay at: " + t);*/
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if (delayTime == 0) {
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return;
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}
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try { Thread.sleep(delayTime); } catch (InterruptedException e) { }
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scheduleEventUnsafe(this, t+1);
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}
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};
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private void recreateTickLists() {
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/* Tick MSP motes separately */
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ArrayList<Mote> emulatedMotes = new ArrayList<Mote>();
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ArrayList<Mote> contikiMotes = new ArrayList<Mote>();
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for (Mote mote: motes) {
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/* TODO: fixe an emulatedMote generic class */
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if (mote.getType().getClass().toString().contains(".mspmote.")) {
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emulatedMotes.add(mote);
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} else if (mote.getType().getClass().toString().contains(".avrmote.")) {
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emulatedMotes.add(mote);
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} else {
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contikiMotes.add(mote);
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}
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}
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emulatedMoteArray = emulatedMotes.toArray(new Mote[emulatedMotes.size()]);
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moteArray = contikiMotes.toArray(new Mote[contikiMotes.size()]);
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}
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private boolean rescheduleEvents = false;
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public void run() {
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long lastStartTime = System.currentTimeMillis();
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logger.info("Simulation main loop started, system time: " + lastStartTime);
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isRunning = true;
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/* Schedule tick events */
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scheduleEventUnsafe(tickMotesEvent, currentSimulationTime);
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scheduleEventUnsafe(tickemulatedMotesEvent, currentSimulationTime);
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scheduleEventUnsafe(delayEvent, currentSimulationTime);
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/* Simulation starting */
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this.setChanged();
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this.notifyObservers(this);
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recreateTickLists();
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boolean increasedTime;
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try {
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TimeEvent nextEvent;
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while (isRunning) {
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if (rescheduleEvents) {
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rescheduleEvents = false;
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scheduleEventUnsafe(tickMotesEvent, currentSimulationTime);
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scheduleEventUnsafe(tickemulatedMotesEvent, currentSimulationTime);
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scheduleEventUnsafe(delayEvent, currentSimulationTime);
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}
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nextEvent = eventQueue.popFirst();
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if (nextEvent == null) {
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throw new RuntimeException("No more events");
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}
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increasedTime = nextEvent.time > currentSimulationTime;
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currentSimulationTime = nextEvent.time;
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nextEvent.execute(currentSimulationTime);
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/* Notify tick observers */
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if (increasedTime) {
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tickObservable.allTicksPerformed();
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}
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if (stopSimulation) {
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isRunning = false;
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}
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}
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} catch (IllegalArgumentException e) {
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logger.warn("llegalArgumentException:" + e);
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} catch (IllegalMonitorStateException e) {
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logger.warn("IllegalMonitorStateException:" + e);
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} catch (RuntimeException e) {
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if (e.getClass().getName().contains("IllegalStateException")) { /* XXX Change exception type */
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/* MSPSim memory alignment exception */
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logger.fatal("MSPSim detected memory alignment error: " + e);
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} else {
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logger.warn("Simulation stopped for unknown reason: " + e);
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e.printStackTrace();
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}
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}
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isRunning = false;
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simulationThread = null;
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stopSimulation = false;
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// Notify observers simulation has stopped
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this.setChanged();
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this.notifyObservers(this);
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logger.info("Simulation main loop stopped, system time: "
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+ System.currentTimeMillis() + "\tDuration: "
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+ (System.currentTimeMillis() - lastStartTime) + " ms");
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}
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/**
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* Creates a new simulation with a delay time of 100 ms.
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*/
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public Simulation(GUI gui) {
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myGUI = gui;
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}
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/**
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* Starts this simulation (notifies observers).
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*/
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public void startSimulation() {
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if (!isRunning()) {
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isRunning = true;
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simulationThread = new Thread(this);
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simulationThread.start();
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}
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}
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/**
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* Stops this simulation (notifies observers).
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*/
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public void stopSimulation() {
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if (isRunning()) {
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stopSimulation = true;
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/* Wait until simulation stops */
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if (Thread.currentThread() != simulationThread) {
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try {
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if (simulationThread != null) {
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simulationThread.join();
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}
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} catch (InterruptedException e) {
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}
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}
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}
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}
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/**
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* Starts simulation if stopped, ticks all motes once, and finally stops
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* simulation again.
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*/
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public void tickSimulation() {
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addTickObserver(new Observer() {
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public void update(Observable obs, Object obj) {
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stopSimulation();
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deleteTickObserver(this);
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}
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});
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startSimulation();
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}
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/**
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* @return GUI holding this simulation
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*/
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public GUI getGUI() {
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return myGUI;
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}
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/**
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* @return Random seed
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*/
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public long getRandomSeed() {
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return randomSeed;
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}
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/**
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* @param randomSeed Random seed
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*/
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public void setRandomSeed(long randomSeed) {
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this.randomSeed = randomSeed;
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randomGenerator.setSeed(randomSeed);
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logger.info("Simulation random seed: " + randomSeed);
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}
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/**
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* @param generated Autogenerated random seed at simulation load
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*/
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public void setRandomSeedGenerated(boolean generated) {
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this.randomSeedGenerated = generated;
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}
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/**
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* @return Autogenerated random seed at simulation load
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*/
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public boolean getRandomSeedGenerated() {
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return randomSeedGenerated;
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}
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public Random getRandomGenerator() {
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return randomGenerator;
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}
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/**
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* @return Maximum mote startup delay
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*/
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public int getDelayedMoteStartupTime() {
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return maxMoteStartupDelay;
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}
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/**
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* @param maxMoteStartupDelay Maximum mote startup delay
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*/
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public void setDelayedMoteStartupTime(int maxMoteStartupDelay) {
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this.maxMoteStartupDelay = Math.max(0, maxMoteStartupDelay);
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}
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/**
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* Returns the current simulation config represented by XML elements. This
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* config also includes the current radio medium, all mote types and motes.
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*
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* @return Current simulation config
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*/
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public Collection<Element> getConfigXML() {
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Vector<Element> config = new Vector<Element>();
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Element element;
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// Title
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element = new Element("title");
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element.setText(title);
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config.add(element);
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// Delay time
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element = new Element("delaytime");
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element.setText(Integer.toString(delayTime));
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config.add(element);
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// Tick time
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element = new Element("ticktime");
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element.setText(Integer.toString(tickTime));
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config.add(element);
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// Random seed
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element = new Element("randomseed");
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if (randomSeedGenerated) {
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element.setText("generated");
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} else {
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element.setText(Long.toString(getRandomSeed()));
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}
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config.add(element);
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// Max mote startup delay
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element = new Element("motedelay");
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element.setText(Integer.toString(maxMoteStartupDelay));
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config.add(element);
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// Radio Medium
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element = new Element("radiomedium");
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element.setText(currentRadioMedium.getClass().getName());
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Collection radioMediumXML = currentRadioMedium.getConfigXML();
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if (radioMediumXML != null) {
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element.addContent(radioMediumXML);
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}
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config.add(element);
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// Mote types
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for (MoteType moteType : getMoteTypes()) {
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element = new Element("motetype");
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element.setText(moteType.getClass().getName());
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Collection moteTypeXML = moteType.getConfigXML();
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if (moteTypeXML != null) {
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element.addContent(moteTypeXML);
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}
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config.add(element);
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}
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// Motes
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for (Mote mote : motes) {
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element = new Element("mote");
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element.setText(mote.getClass().getName());
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Collection moteXML = mote.getConfigXML();
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if (moteXML != null) {
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element.addContent(moteXML);
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}
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config.add(element);
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}
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return config;
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}
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/**
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* Sets the current simulation config depending on the given XML elements.
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*
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* @see #getConfigXML()
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* @param configXML
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* Config XML elements
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* @param visAvailable
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* True if simulation is allowed to show visualizers while loading
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* the given config
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* @return True if simulation config set successfully
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* @throws Exception
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* If configuration could not be loaded
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*/
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public boolean setConfigXML(Collection<Element> configXML,
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boolean visAvailable) throws Exception {
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// Parse elements
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for (Element element : configXML) {
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// Title
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if (element.getName().equals("title")) {
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title = element.getText();
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}
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// Delay time
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if (element.getName().equals("delaytime")) {
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delayTime = Integer.parseInt(element.getText());
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}
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// Tick time
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if (element.getName().equals("ticktime")) {
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tickTime = Integer.parseInt(element.getText());
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}
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// Random seed
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if (element.getName().equals("randomseed")) {
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if (element.getText().equals("generated")) {
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randomSeedGenerated = true;
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setRandomSeed(new Random().nextLong());
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} else {
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setRandomSeed(Long.parseLong(element.getText()));
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}
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}
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// Max mote startup delay
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if (element.getName().equals("motedelay")) {
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maxMoteStartupDelay = Integer.parseInt(element.getText());
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}
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// Radio medium
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if (element.getName().equals("radiomedium")) {
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String radioMediumClassName = element.getText().trim();
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Class<? extends RadioMedium> radioMediumClass = myGUI.tryLoadClass(
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this, RadioMedium.class, radioMediumClassName);
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if (radioMediumClass != null) {
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// Create radio medium specified in config
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try {
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currentRadioMedium = RadioMedium.generateRadioMedium(radioMediumClass, this);
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} catch (Exception e) {
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currentRadioMedium = null;
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logger.warn("Could not load radio medium class: " + radioMediumClassName);
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}
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}
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// Show configure simulation dialog
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boolean createdOK = false;
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if (visAvailable) {
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createdOK = CreateSimDialog.showDialog(GUI.getTopParentContainer(), this);
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} else {
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createdOK = true;
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}
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if (!createdOK) {
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logger.debug("Simulation not created, aborting");
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throw new Exception("Load aborted by user");
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}
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// Check if radio medium specific config should be applied
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if (radioMediumClassName.equals(currentRadioMedium.getClass().getName())) {
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currentRadioMedium.setConfigXML(element.getChildren(), visAvailable);
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} else {
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logger.info("Radio Medium changed - ignoring radio medium specific config");
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}
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}
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// Mote type
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if (element.getName().equals("motetype")) {
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String moteTypeClassName = element.getText().trim();
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Class<? extends MoteType> moteTypeClass = myGUI.tryLoadClass(this,
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MoteType.class, moteTypeClassName);
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if (moteTypeClass == null) {
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logger.fatal("Could not load mote type class: " + moteTypeClassName);
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return false;
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}
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MoteType moteType = moteTypeClass.getConstructor((Class[]) null)
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.newInstance();
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boolean createdOK = moteType.setConfigXML(this, element.getChildren(),
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visAvailable);
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if (createdOK) {
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addMoteType(moteType);
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} else {
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logger
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.fatal("Mote type was not created: " + element.getText().trim());
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throw new Exception("All mote types were not recreated");
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}
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}
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// Mote
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if (element.getName().equals("mote")) {
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Class<? extends Mote> moteClass = myGUI.tryLoadClass(this, Mote.class,
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element.getText().trim());
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Mote mote = moteClass.getConstructor((Class[]) null).newInstance((Object[]) null);
|
|
if (mote.setConfigXML(this, element.getChildren(), visAvailable)) {
|
|
addMote(mote);
|
|
} else {
|
|
logger.fatal("Mote was not created: " + element.getText().trim());
|
|
throw new Exception("All motes were not recreated");
|
|
}
|
|
}
|
|
}
|
|
|
|
setChanged();
|
|
notifyObservers(this);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Removes a mote from this simulation
|
|
*
|
|
* @param mote
|
|
* Mote to remove
|
|
*/
|
|
public void removeMote(final Mote mote) {
|
|
if (!isRunning()) {
|
|
/* Simulation is stopped, remove mote immediately */
|
|
motes.remove(mote);
|
|
currentRadioMedium.unregisterMote(mote, this);
|
|
myGUI.closeMotePlugins(mote);
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
return;
|
|
}
|
|
|
|
/* Simulation is running, remove mote in simulation loop */
|
|
TimeEvent removeNewMoteEvent = new TimeEvent(0) {
|
|
public void execute(long t) {
|
|
motes.remove(mote);
|
|
currentRadioMedium.unregisterMote(mote, Simulation.this);
|
|
recreateTickLists();
|
|
Simulation.this.setChanged();
|
|
Simulation.this.notifyObservers(this);
|
|
}
|
|
};
|
|
|
|
scheduleEvent(removeNewMoteEvent, Simulation.this.getSimulationTime());
|
|
}
|
|
|
|
/**
|
|
* Adds a mote to this simulation
|
|
*
|
|
* @param mote
|
|
* Mote to add
|
|
*/
|
|
public void addMote(final Mote mote) {
|
|
if (maxMoteStartupDelay > 0 && mote.getInterfaces().getClock() != null) {
|
|
mote.getInterfaces().getClock().setDrift(
|
|
-randomGenerator.nextInt(maxMoteStartupDelay)
|
|
);
|
|
}
|
|
|
|
if (!isRunning()) {
|
|
/* Simulation is stopped, add mote immediately */
|
|
motes.add(mote);
|
|
currentRadioMedium.registerMote(mote, this);
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
return;
|
|
}
|
|
|
|
/* Simulation is running, add mote in simulation loop */
|
|
TimeEvent addNewMoteEvent = new TimeEvent(0) {
|
|
public void execute(long t) {
|
|
motes.add(mote);
|
|
currentRadioMedium.registerMote(mote, Simulation.this);
|
|
recreateTickLists();
|
|
Simulation.this.setChanged();
|
|
Simulation.this.notifyObservers(this);
|
|
}
|
|
};
|
|
|
|
scheduleEvent(addNewMoteEvent, Simulation.this.getSimulationTime());
|
|
}
|
|
|
|
/**
|
|
* Get a mote from this simulation.
|
|
*
|
|
* @param pos
|
|
* Internal list position of mote
|
|
* @return Mote
|
|
*/
|
|
public Mote getMote(int pos) {
|
|
return motes.get(pos);
|
|
}
|
|
|
|
/**
|
|
* Returns number of motes in this simulation.
|
|
*
|
|
* @return Number of motes
|
|
*/
|
|
public int getMotesCount() {
|
|
return motes.size();
|
|
}
|
|
|
|
/**
|
|
* Returns all motes in this simulation.
|
|
*
|
|
* @return Motes
|
|
*/
|
|
public Mote[] getMotes() {
|
|
Mote[] arr = new Mote[motes.size()];
|
|
motes.toArray(arr);
|
|
return arr;
|
|
}
|
|
|
|
/**
|
|
* Returns all mote types in simulation.
|
|
*
|
|
* @return All mote types
|
|
*/
|
|
public Vector<MoteType> getMoteTypes() {
|
|
return moteTypes;
|
|
}
|
|
|
|
/**
|
|
* Returns mote type with given identifier.
|
|
*
|
|
* @param identifier
|
|
* Mote type identifier
|
|
* @return Mote type or null if not found
|
|
*/
|
|
public MoteType getMoteType(String identifier) {
|
|
for (MoteType moteType : getMoteTypes()) {
|
|
if (moteType.getIdentifier().equals(identifier)) {
|
|
return moteType;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Adds given mote type to simulation.
|
|
*
|
|
* @param newMoteType Mote type
|
|
*/
|
|
public void addMoteType(MoteType newMoteType) {
|
|
moteTypes.add(newMoteType);
|
|
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
}
|
|
|
|
/**
|
|
* Set delay time to delayTime. When all motes have been ticked, the
|
|
* simulation waits for this time before ticking again.
|
|
*
|
|
* @param delayTime
|
|
* New delay time (ms)
|
|
*/
|
|
public void setDelayTime(int delayTime) {
|
|
this.delayTime = delayTime;
|
|
|
|
rescheduleEvents = true;
|
|
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
}
|
|
|
|
/**
|
|
* Returns current delay time.
|
|
*
|
|
* @return Delay time (ms)
|
|
*/
|
|
public int getDelayTime() {
|
|
return delayTime;
|
|
}
|
|
|
|
/**
|
|
* Set simulation time to simulationTime.
|
|
*
|
|
* @param simulationTime
|
|
* New simulation time (ms)
|
|
*/
|
|
public void setSimulationTime(int simulationTime) {
|
|
currentSimulationTime = simulationTime;
|
|
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
}
|
|
|
|
/**
|
|
* Returns current simulation time.
|
|
*
|
|
* @return Simulation time (ms)
|
|
*/
|
|
public long getSimulationTime() {
|
|
return currentSimulationTime;
|
|
}
|
|
|
|
/**
|
|
* Set tick time to tickTime. The tick time is the simulated time every tick
|
|
* takes. When all motes have been ticked, current simulation time is
|
|
* increased with tickTime. Default tick time is 1 ms.
|
|
*
|
|
* @see #getTickTime()
|
|
* @see #getTickTimeInSeconds()
|
|
* @param tickTime
|
|
* New tick time (ms)
|
|
*/
|
|
public void setTickTime(int tickTime) {
|
|
this.tickTime = tickTime;
|
|
|
|
this.setChanged();
|
|
this.notifyObservers(this);
|
|
}
|
|
|
|
/**
|
|
* Changes radio medium of this simulation to the given.
|
|
*
|
|
* @param radioMedium
|
|
* New radio medium
|
|
*/
|
|
public void setRadioMedium(RadioMedium radioMedium) {
|
|
// Remove current radio medium from observing motes
|
|
if (currentRadioMedium != null) {
|
|
for (int i = 0; i < motes.size(); i++) {
|
|
currentRadioMedium.unregisterMote(motes.get(i), this);
|
|
}
|
|
}
|
|
|
|
// Change current radio medium to new one
|
|
if (radioMedium == null) {
|
|
logger.fatal("Radio medium could not be created!");
|
|
return;
|
|
}
|
|
this.currentRadioMedium = radioMedium;
|
|
|
|
// Add all current motes to the new radio medium
|
|
for (int i = 0; i < motes.size(); i++) {
|
|
currentRadioMedium.registerMote(motes.get(i), this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get currently used radio medium.
|
|
*
|
|
* @return Currently used radio medium
|
|
*/
|
|
public RadioMedium getRadioMedium() {
|
|
return currentRadioMedium;
|
|
}
|
|
|
|
/**
|
|
* Get current tick time (ms).
|
|
*
|
|
* @see #setTickTime(int)
|
|
* @return Current tick time (ms)
|
|
*/
|
|
public int getTickTime() {
|
|
return tickTime;
|
|
}
|
|
|
|
/**
|
|
* Get current tick time (seconds).
|
|
*
|
|
* @see #setTickTime(int)
|
|
* @return Current tick time (seconds)
|
|
*/
|
|
public double getTickTimeInSeconds() {
|
|
return (tickTime) / 1000.0;
|
|
}
|
|
|
|
/**
|
|
* Return true is simulation is running.
|
|
*
|
|
* @return True if simulation is running
|
|
*/
|
|
public boolean isRunning() {
|
|
return isRunning && simulationThread != null;
|
|
}
|
|
|
|
/**
|
|
* Get current simulation title (short description).
|
|
*
|
|
* @return Title
|
|
*/
|
|
public String getTitle() {
|
|
return title;
|
|
}
|
|
|
|
/**
|
|
* Set simulation title.
|
|
*
|
|
* @param title
|
|
* New title
|
|
*/
|
|
public void setTitle(String title) {
|
|
this.title = title;
|
|
}
|
|
|
|
}
|