new branches

12 files changed, 2068 insertions, 0 deletions

diff --git a/VS-Sim-Sources/sources/protocols/VSAbstractProtocol.java b/VS-Sim-Sources/sources/protocols/VSAbstractProtocol.java
new file mode 100644
index 0000000..ead58b7
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/VSAbstractProtocol.java
@@ -0,0 +1,468 @@
+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * All icons of the icons/ folder are 	under a Creative Commons
+ * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
+ *
+ * The icon's homepage is http://code.google.com/p/ultimate-gnome/
+ */
+
+package protocols;
+
+import java.io.*;
+import java.util.ArrayList;
+
+import core.*;
+import events.*;
+import events.internal.*;
+import serialize.*;
+import simulator.VSSimulatorVisualization;
+//import utils.*;
+
+/**
+ * The class VSAbstractProtocol, this class defined the basic framework of a
+ * protocol.
+ *
+ * @author Paul C. Buetow
+ */
+abstract public class VSAbstractProtocol extends VSAbstractEvent {
+    /** The serial version uid */
+    private static final long serialVersionUID = 1L;
+
+    /** The protocol has an onServerStart method */
+    protected static final boolean HAS_ON_SERVER_START = true;
+
+    /** The protocol has an onClientStart method */
+    protected static final boolean HAS_ON_CLIENT_START = false;
+
+    /** True, if onServerStart is used, false if onClientStart is used */
+    private boolean hasOnServerStart;
+
+    /** The protocol object is a server. */
+    private boolean isServer;
+
+    /** The protocol object is a client. */
+    private boolean isClient;
+
+    /** The protocol object server is initialized. */
+    private boolean isServerInitialized;
+
+    /** The protocol object client is initialized. */
+    private boolean isClientInitialized;
+
+    /** The current protocol object's context is a server. */
+    private boolean currentContextIsServer;
+
+    /** The protocol's server schedules */
+    private ArrayList<VSTask> serverSchedules = new ArrayList<VSTask>();
+
+    /** The protocol's client schedules */
+    private ArrayList<VSTask> clientSchedules = new ArrayList<VSTask>();
+
+    /**
+     * A simple constructor.
+     *
+     * @param hasOnServerStart true, if the protocol uses an onServerStart
+     *	method. false, if the protocol uses an onClientStart method instead.
+     */
+    public VSAbstractProtocol(boolean hasOnServerStart) {
+        this.hasOnServerStart = hasOnServerStart;
+    }
+
+    /**
+     * Sends a message.
+     *
+     * @param message the message to send
+     */
+    public void sendMessage(VSMessage message) {
+        if (process == null)
+            return;
+
+        process.increaseLamportTime();
+        process.increaseVectorTime();
+
+        VSMessageStub stub = new VSMessageStub(message);
+        VSInternalProcess internalProcess = (VSInternalProcess) process;
+
+        if (currentContextIsServer)
+            stub.init(internalProcess, getClassname(),
+                      VSMessage.IS_SERVER_MESSAGE);
+        else
+            stub.init(internalProcess, getClassname(),
+                      VSMessage.IS_CLIENT_MESSAGE);
+
+        internalProcess.sendMessage(message);
+    }
+
+    /**
+     * Checks if it's the incorrect protocol
+     *
+     * @param message the message to check against
+     *
+     * @return true, if is incorrect protocol
+     */
+    private final boolean isIncorrectProtocol(VSMessage message) {
+        return !message.getProtocolClassname().equals(getClassname());
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractEvent#onStart()
+     */
+    public final void onStart() {
+        if (hasOnServerStart) {
+            if (isServer) {
+                currentContextIsServer(true);
+                if (!isServerInitialized)
+                    onInit();
+                onServerStart();
+            }
+        } else {
+            if (isClient) {
+                currentContextIsServer(false);
+                if (!isClientInitialized)
+                    onInit();
+                onClientStart();
+            }
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractEvent#onInit()
+     */
+    public final void onInit() {
+        if (isClient) {
+            currentContextIsServer(false);
+            onClientInit();
+            isClientInitialized = true;
+        }
+
+        if (isServer) {
+            currentContextIsServer(true);
+            onServerInit();
+            isServerInitialized = true;
+        }
+    }
+
+    /**
+     * Runs a client schedule
+     */
+    public final void onClientScheduleStart() {
+        if (isClient) {
+            currentContextIsServer(false);
+            onClientSchedule();
+        }
+    }
+
+    /**
+     * Runs a server schedule
+     */
+    public final void onServerScheduleStart() {
+        if (isServer) {
+            currentContextIsServer(true);
+            onServerSchedule();
+        }
+    }
+
+    /**
+     * On message recv.
+     *
+     * @param message the message
+     */
+    public final void onMessageRecvStart(VSMessage message) {
+        if (isIncorrectProtocol(message))
+            return;
+
+        if (isServer) {
+            currentContextIsServer(true);
+            if (!isServerInitialized)
+                onInit();
+            onServerRecv(message);
+        }
+
+        if (isClient) {
+            currentContextIsServer(false);
+            if (!isClientInitialized)
+                onInit();
+            onClientRecv(message);
+        }
+    }
+
+    /**
+     * Check's if its a relevant message.
+     *
+     * @param message the message to check
+     *
+     * @return true, if it's a relevant meessage. false if the protocol
+     *	is wrong or if the server recv a server message/the client recv a
+     * 	client message. Clients should only recv server messages and servers
+     *	should only recv client messages.
+     */
+    public final boolean isRelevantMessage(VSMessage message) {
+        if (isIncorrectProtocol(message))
+            return false;
+
+        if (message.isServerMessage()) {
+            if (!isClient)
+                return false;
+        } else {
+            if (!isServer)
+                return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Sets if the current context is server.
+     *
+     * @param currentContextIsServer the context.
+     */
+    public final void currentContextIsServer(boolean currentContextIsServer) {
+        this.currentContextIsServer = currentContextIsServer;
+    }
+
+    /**
+     * Checks how the protocol will start
+     *
+     * @return true, if this protocol uses onServerStart instead of
+     *	onClientStart
+     */
+    public final boolean hasOnServerStart() {
+        return hasOnServerStart;
+    }
+
+    /**
+     * Sets if is server.
+     *
+     * @param isServer the is server
+     */
+    public final void isServer(boolean isServer) {
+        this.isServer = isServer;
+    }
+
+    /**
+     * Checks if is server.
+     *
+     * @return true, if the protocol has activated the server part
+     */
+    public final boolean isServer() {
+        return isServer;
+    }
+
+    /**
+     * Sets if is client.
+     *
+     * @param isClient the is client
+     */
+    public final void isClient(boolean isClient) {
+        this.isClient = isClient;
+    }
+
+    /**
+     * Checks if is client.
+     *
+     * @return true, if the protocol has activated the client part
+     */
+    public final boolean isClient() {
+        return isClient;
+    }
+
+    /**
+     * Resets the protocol.
+     */
+    public void reset() {
+        currentContextIsServer(true);
+        isServer = false;
+        onServerReset();
+        serverSchedules.clear();
+
+        currentContextIsServer(false);
+        isClient = false;
+        onClientReset();
+        clientSchedules.clear();
+    }
+
+    /**
+     * Reschedules the protocol for a new time and runs onClientSchedule or
+     *	onServerSchedule
+     *
+     * @param time The process' local time to run the schedule at.
+     */
+    public final void scheduleAt(long time) {
+        VSInternalProcess internalProcess = (VSInternalProcess) process;
+        VSAbstractEvent scheduleEvent =
+            new VSProtocolScheduleEvent(this, currentContextIsServer);
+        VSTask scheduleTask =
+            new VSTask(time, internalProcess, scheduleEvent, VSTask.LOCAL);
+
+        if (currentContextIsServer)
+            serverSchedules.add(scheduleTask);
+        else
+            clientSchedules.add(scheduleTask);
+
+        VSSimulatorVisualization canvas = internalProcess.getSimulatorCanvas();
+        canvas.getTaskManager().addTask(scheduleTask);
+    }
+
+    /**
+     * Removes all schedules of the protocol (server or client)
+     */
+    public final void removeSchedules() {
+        VSInternalProcess internalProcess = (VSInternalProcess) process;
+
+        if (currentContextIsServer) {
+            internalProcess.getSimulatorCanvas().
+            getTaskManager().removeAllTasks(serverSchedules);
+            serverSchedules.clear();
+
+        } else {
+            internalProcess.getSimulatorCanvas().
+            getTaskManager().removeAllTasks(clientSchedules);
+            clientSchedules.clear();
+        }
+    }
+
+    /**
+     * On client init.
+     */
+    abstract public void onClientInit();
+
+    /**
+     * On client start.
+     */
+    public void onClientStart() { };
+
+    /**
+     * On client reset.
+     */
+    abstract public void onClientReset();
+
+    /**
+     * On client schedule.
+     */
+    abstract public void onClientSchedule();
+
+    /**
+     * On client recv.
+     *
+     * @param message the message
+     */
+    abstract public void onClientRecv(VSMessage message);
+
+    /**
+     * On server init.
+     */
+    abstract public void onServerInit();
+
+    /**
+     * On server start.
+     */
+    public void onServerStart() { };
+
+    /**
+     * On server reset.
+     */
+    abstract public void onServerReset();
+
+    /**
+     * On server recv.
+     *
+     * @param message the message
+     */
+    abstract public void onServerRecv(VSMessage message);
+
+    /**
+     * On server schedule.
+     */
+    abstract public void onServerSchedule();
+
+    /**
+     * Gets the num processes.
+     *
+     * @return the num processes
+     */
+    public final int getNumProcesses() {
+        if (process == null)
+            return 0;
+
+        VSInternalProcess internalProcess = (VSInternalProcess) process;
+        return internalProcess.getSimulatorCanvas().getNumProcesses();
+    }
+
+    /* (non-Javadoc)
+     * @see prefs.VSPrefs#toString()
+     */
+    public String toString() {
+        if (process == null)
+            return "";
+
+        StringBuffer buffer = new StringBuffer();
+
+        buffer.append(prefs.getString("lang.protocol"));
+        buffer.append(": ");
+        buffer.append(getShortname());
+        buffer.append(" ");
+
+        if (currentContextIsServer)
+            buffer.append(prefs.getString("lang.server"));
+        else
+            buffer.append(prefs.getString("lang.client"));
+
+        return buffer.toString();
+    }
+
+    /* (non-Javadoc)
+     * @see serialize.VSSerializable#serialize(serialize.VSSerialize,
+     *	java.io.ObjectOutputStream)
+     */
+    public synchronized void serialize(VSSerialize serialize,
+                                       ObjectOutputStream objectOutputStream)
+    throws IOException {
+        super.serialize(serialize, objectOutputStream);
+
+        /** For later backwards compatibility, to add more stuff */
+        objectOutputStream.writeObject(new Boolean(false));
+
+        objectOutputStream.writeObject(new Boolean(hasOnServerStart));
+
+        /** For later backwards compatibility, to add more stuff */
+        objectOutputStream.writeObject(new Boolean(false));
+    }
+
+    /* (non-Javadoc)
+     * @see serialize.VSSerializable#deserialize(serialize.VSSerialize,
+     *	java.io.ObjectInputStream)
+     */
+    @SuppressWarnings("unchecked")
+    public synchronized void deserialize(VSSerialize serialize,
+                                         ObjectInputStream objectInputStream)
+    throws IOException, ClassNotFoundException {
+        super.deserialize(serialize, objectInputStream);
+
+        if (VSSerialize.DEBUG)
+            System.out.println("Deserializing: VSAbstractProtocol");
+
+        /** For later backwards compatibility, to add more stuff */
+        objectInputStream.readObject();
+
+        this.hasOnServerStart = ((Boolean)
+                                 objectInputStream.readObject()).booleanValue();
+
+        /** For later backwards compatibility, to add more stuff */
+        objectInputStream.readObject();
+    }
+}
diff --git a/VS-Sim-Sources/sources/protocols/implementations/README b/VS-Sim-Sources/sources/protocols/implementations/README
new file mode 100644
index 0000000..fd8effa
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/implementations/README
@@ -0,0 +1,10 @@
+How to add a new protocol:
+
+1. Copy the file VSDummyProtocol.java into VSYourOwnNiceProtocol.java
+
+2. Edit VSYourOwnNiceProtocol.java and replace the classname!
+
+3. Edit the initialize method of events.RegisteredEvents.java and add the classname
+of your protocol.  E.g.: "protocols.implementations.VSYourOwnNiceProtocol"
+
+
diff --git a/VS-Sim-Sources/sources/protocols/implementations/VSBasicMulticastProtocol.java b/VS-Sim-Sources/sources/protocols/implementations/VSBasicMulticastProtocol.java
new file mode 100644
index 0000000..76b13b5
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/implementations/VSBasicMulticastProtocol.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * All icons of the icons/ folder are 	under a Creative Commons
+ * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
+ *
+ * The icon's homepage is http://code.google.com/p/ultimate-gnome/
+ */
+
+package protocols.implementations;
+
+import protocols.VSAbstractProtocol;
+import core.VSMessage;
+
+/**
+ * The class VSBasicMulticastProtocol, an implementation of the basic multicast
+ * protocol.
+ *
+ * @author Paul C. Buetow
+ */
+public class VSBasicMulticastProtocol extends VSAbstractProtocol {
+    /** The serial version uid */
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * Instantiates a new VSBasicMulticast object.
+     */
+    public VSBasicMulticastProtocol() {
+        super(VSAbstractProtocol.HAS_ON_CLIENT_START);
+        setClassname(getClass().toString());
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onClientInit()
+     */
+    public void onClientInit() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientReset()
+     */
+    public void onClientReset() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientStart()
+     */
+    public void onClientStart() {
+        VSMessage message = new VSMessage();
+        message.setBoolean("isMulticast", true);
+        sendMessage(message);
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientRecv(core.VSMessage)
+     */
+    public void onClientRecv(VSMessage recvMessage) {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientSchedule()
+     */
+    public void onClientSchedule() {
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onServerInit()
+     */
+    public void onServerInit() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerReset()
+     */
+    public void onServerReset() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerRecv(core.VSMessage)
+     */
+    public void onServerRecv(VSMessage recvMessage) {
+        if (recvMessage.getBoolean("isMulticast"))
+            log("Multicast erhalten");
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerSchedule()
+     */
+    public void onServerSchedule() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#toString()
+     */
+    public String toString() {
+        return super.toString();
+    }
+}
diff --git a/VS-Sim-Sources/sources/protocols/implementations/VSBerkelyTimeProtocol.java b/VS-Sim-Sources/sources/protocols/implementations/VSBerkelyTimeProtocol.java
new file mode 100644
index 0000000..1b69b72
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/implementations/VSBerkelyTimeProtocol.java
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * All icons of the icons/ folder are 	under a Creative Commons
+ * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
+ *
+ * The icon's homepage is http://code.google.com/p/ultimate-gnome/
+ */
+
+package protocols.implementations;
+
+import protocols.VSAbstractProtocol;
+import core.VSMessage;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Vector;
+
+/**
+ * The class VSBerkelyTimeProtocol, an implementation of the berkely time
+ * protocol.
+ *
+ * @author Paul C. Buetow
+ */
+public class VSBerkelyTimeProtocol extends VSAbstractProtocol {
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * Instantiates a new berkely time protocol.
+     */
+    public VSBerkelyTimeProtocol() {
+        super(VSAbstractProtocol.HAS_ON_SERVER_START);
+        setClassname(getClass().toString());
+    }
+
+    /** Integer: Process ID, Long: Local time of the process */
+    private HashMap<Integer,Long> processTimes = new HashMap<Integer,Long>();
+
+    /** Integer: Process ID, Long: Time of receiving the response from the
+     * process
+     */
+    private HashMap<Integer,Long> recvTimes = new HashMap<Integer,Long>();
+
+    /** Integer: Process ID, Long: Calculated process times (using the RTT) */
+    private HashMap<Integer,Long> realTimesRTT = new HashMap<Integer,Long>();
+
+    /** Contains all process IDs of processes which want to justify their
+     * time
+     */
+    private ArrayList<Integer> peers = new ArrayList<Integer>();
+
+    /** Time the request/response has started */
+    private long requestTime;
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onServerInit()
+     */
+    public void onServerInit() {
+        Vector<Integer> vec = new Vector<Integer>();
+        vec.add(1);
+        vec.add(3);
+        initVector("pids", vec, "PIDs beteiliger Prozesse");
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerReset()
+     */
+    public void onServerReset() {
+        //System.out.println("FOOBAR");
+        processTimes.clear();
+        recvTimes.clear();
+        realTimesRTT.clear();
+        peers.clear();
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerStart()
+     */
+    public void onServerStart() {
+        //System.out.println("FOO");
+        peers.addAll(getVector("pids"));
+        requestTime = process.getTime();
+        VSMessage message = new VSMessage();
+        message.setBoolean("isRequest", true);
+        sendMessage(message);
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerRecv(core.VSMessage)
+     */
+    public void onServerRecv(VSMessage recvMessage) {
+        /* Ignore all protocol messages which are not a response message,
+           e.g. itself */
+        if (!recvMessage.getBoolean("isResponse"))
+            return;
+
+        Integer processID = recvMessage.getIntegerObj("processID");
+
+        if (peers.contains(processID))
+            peers.remove(processID);
+        else
+            return; /* Process has been handled already or is not listed */
+
+        Long time = new Long(recvMessage.getLong("time"));
+
+        processTimes.put(processID, time);
+        recvTimes.put(processID, new Long(process.getTime()));
+
+        /* All peers have told their times */
+        if (peers.size() == 0) {
+            long avgTime = calculateAverageTime();
+            /* Set the local's process time to the new avg reference time */
+            process.setTime(avgTime);
+            /* Tell all other processes what to do in order to justify their
+               times */
+            sendJustifyRequests(avgTime);
+            /* Start "clean" next time */
+            onServerReset();
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerSchedule()
+     */
+    public void onServerSchedule() {
+    }
+
+    /**
+     * Calculate the new average time.
+     *
+     * @return the long
+     */
+    private long calculateAverageTime() {
+        long sum = 0;
+        for (Integer processID : processTimes.keySet()) {
+            Long localTime = processTimes.get(processID);
+            Long recvTime = recvTimes.get(processID);
+            long rtt = recvTime.longValue() - requestTime;
+            long realProcessTime = localTime + (long) (rtt / 2);
+            realTimesRTT.put(processID, new Long(realProcessTime));
+            sum += realProcessTime;
+        }
+        /* Include the time of the local process */
+        sum += process.getTime();
+        return (long) sum / (getVector("pids").size() + 1);
+    }
+
+    /**
+     * Sends to all clients a value to justify their local clocks.
+     *
+     * @param avgTime the avg time
+     */
+    private void sendJustifyRequests(long avgTime) {
+        for (Integer processID : processTimes.keySet()) {
+            long realProcessTime = realTimesRTT.get(processID).longValue();
+            long diff = avgTime - realProcessTime;
+            VSMessage message = new VSMessage();
+            message.setBoolean("isJustify", true);
+            message.setLong("timeDiff", diff);
+            message.setInteger("receiverProcessID", processID);
+            sendMessage(message);
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onClientInit()
+     */
+    public void onClientInit() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientReset()
+     */
+    public void onClientReset() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientRecv(core.VSMessage)
+     */
+    public void onClientRecv(VSMessage recvMessage) {
+        if (recvMessage.getBoolean("isRequest")) {
+            VSMessage message = new VSMessage();
+            message.setInteger("processID", process.getProcessID());
+            message.setLong("time", process.getTime());
+            message.setBoolean("isResponse", true);
+            sendMessage(message);
+
+        } else if (recvMessage.getBoolean("isJustify")) {
+            /* Check if it's "my" justify message */
+            if (recvMessage.getInteger("receiverProcessID") !=
+                    process.getProcessID())
+                return;
+
+            long timeDiff = recvMessage.getLong("timeDiff");
+            //long recvTime = process.getTime();
+            long newTime = process.getTime() + timeDiff;
+            log("Neue Zeit: " + newTime);
+
+            process.setTime(newTime);
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientSchedule()
+     */
+    public void onClientSchedule() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#toString()
+     */
+    public String toString() {
+        return super.toString();
+    }
+}
diff --git a/VS-Sim-Sources/sources/protocols/implementations/VSBroadcastProtocol.java b/VS-Sim-Sources/sources/protocols/implementations/VSBroadcastProtocol.java
new file mode 100644
index 0000000..0ae8fae
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/implementations/VSBroadcastProtocol.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * All icons of the icons/ folder are 	under a Creative Commons
+ * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
+ *
+ * The icon's homepage is http://code.google.com/p/ultimate-gnome/
+ */
+
+package protocols.implementations;
+
+import java.util.ArrayList;
+
+import core.VSMessage;
+import protocols.VSAbstractProtocol;
+
+/**
+ * The class VSBroadcastProtocol, an implementation of the broadcast
+ * sturm protocol.
+ *
+ * @author Paul C. Buetow
+ */
+public class VSBroadcastProtocol extends VSAbstractProtocol {
+    /** The serial version uid */
+    private static final long serialVersionUID = 1L;
+
+    /** The sent messages. */
+    private ArrayList<Integer> sentMessages;
+
+    /** The broadcast count. */
+    private static int broadcastCount;
+
+    /**
+     * Instantiates a new broadcast sturm protocol.
+     */
+    public VSBroadcastProtocol() {
+        super(VSAbstractProtocol.HAS_ON_CLIENT_START);
+        setClassname(getClass().toString());
+        sentMessages = new ArrayList<Integer>();
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onClientInit()
+     */
+    public void onClientInit() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientReset()
+     */
+    public void onClientReset() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientStart()
+     */
+    public void onClientStart() {
+        VSMessage message = new VSMessage();
+        message.setInteger("Broadcast", broadcastCount++);
+        sentMessages.add(message.getIntegerObj("Broadcast"));
+        sendMessage(message);
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientRecv(core.VSMessage)
+     */
+    public void onClientRecv(VSMessage recvMessage) {
+        onServerRecv(recvMessage);
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onClientSchedule()
+     */
+    public void onClientSchedule() {
+    }
+
+    /* (non-Javadoc)
+     * @see events.VSAbstractProtocol#onServerInit()
+     */
+    public void onServerInit() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerReset()
+     */
+    public void onServerReset() {
+        sentMessages.clear();
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerSchedule()
+     */
+    public void onServerSchedule() {
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#onServerRecv(core.VSMessage)
+     */
+    public void onServerRecv(VSMessage recvMessage) {
+        if (!sentMessages.contains(recvMessage.getIntegerObj("Broadcast"))) {
+            VSMessage message = new VSMessage();
+            message.setInteger("Broadcast",
+                               recvMessage.getInteger("Broadcast"));
+            sentMessages.add(message.getIntegerObj("Broadcast"));
+            sendMessage(message);
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see protocols.VSAbstractProtocol#toString()
+     */
+    public String toString() {
+        return super.toString();
+    }
+}
diff --git a/VS-Sim-Sources/sources/protocols/implementations/VSDummyProtocol.java b/VS-Sim-Sources/sources/protocols/implementations/VSDummyProtocol.java
new file mode 100644
index 0000000..b06e256
--- /dev/null
+++ b/VS-Sim-Sources/sources/protocols/implementations/VSDummyProtocol.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 3