Changeset 7163 for code/trunk/src/libraries/network/synchronisable

Timestamp:

Aug 11, 2010, 8:55:13 AM (14 years ago)

Author:

dafrick

Message:

Merged presentation3 branch into trunk.

Location:

code/trunk

Files:

• . (modified) (1 prop)
• src/libraries/network/synchronisable/Serialise.h (modified) (2 diffs)
• src/libraries/network/synchronisable/Synchronisable.cc (modified) (20 diffs)
• src/libraries/network/synchronisable/Synchronisable.h (modified) (8 diffs)

code/trunk/src/libraries/network/synchronisable/Serialise.h

@@ -38 +38 @@
 #include "util/TypeTraits.h"
 #include "core/CorePrereqs.h"
+#include "core/CoreIncludes.h"
+#include "core/SmartPtr.h"
 
 namespace orxonox{
@@ -72 +74 @@
             return *(uint32_t*)(mem) == variable->getObjectID();
         else
+            return variable == variable->getSynchronisable(*(uint32_t*)(mem));
+    }
+    
+    // These functions implement loading / saving / etc. for SmartPtr<T>
+    
+    /** @brief returns the size of the objectID needed to synchronise the pointer */
+    template <class T> inline uint32_t returnSize( const SmartPtr<T>& variable )
+    {
+        return sizeof(uint32_t);
+    }
+    
+    /** @brief reads the objectID of a pointer out of the bytestream and increases the mem pointer */
+    template <class T> inline void loadAndIncrease( const SmartPtr<T>& variable, uint8_t*& mem )
+    {
+//         *const_cast<typename Loki::TypeTraits<T*>::UnqualifiedType*>(&variable) = dynamic_cast<T*>(variable->getSynchronisable( *(uint32_t*)(mem) ));
+        *const_cast<typename Loki::TypeTraits<SmartPtr<T> >::UnqualifiedType*>(&variable) = orxonox_cast<T*>(T::getSynchronisable(*(uint32_t*)(mem)));
+        mem += returnSize( variable );
+    }
+    
+    /** @brief saves the objectID of a pointer into the bytestream and increases the mem pointer */
+    template <class T> inline void saveAndIncrease( const SmartPtr<T>& variable, uint8_t*& mem )
+    {
+        if ( variable.get() )
+            *(uint32_t*)(mem) = static_cast<uint32_t>(variable->getObjectID());
+        else
+            *(uint32_t*)(mem) = OBJECTID_UNKNOWN;
+        mem += returnSize( variable );
+    }
+    
+    /** @brief checks whether the objectID of the variable is the same as in the bytestream */
+    template <class T> inline  bool checkEquality( const SmartPtr<T>& variable, uint8_t* mem )
+    {
+        if ( variable.get() )
+            return *(uint32_t*)(mem) == variable->getObjectID();
+        else
+            return *(uint32_t*)(mem) == OBJECTID_UNKNOWN;
+    }
+    
+    // These functions implement loading / saving / etc. for WeakPtr<T>
+    
+    /** @brief returns the size of the objectID needed to synchronise the pointer */
+    template <class T> inline uint32_t returnSize( const WeakPtr<T>& variable )
+    {
+        return sizeof(uint32_t);
+    }
+    
+    /** @brief reads the objectID of a pointer out of the bytestream and increases the mem pointer */
+    template <class T> inline void loadAndIncrease( const WeakPtr<T>& variable, uint8_t*& mem )
+    {
+        //         *const_cast<typename Loki::TypeTraits<T*>::UnqualifiedType*>(&variable) = dynamic_cast<T*>(variable->getSynchronisable( *(uint32_t*)(mem) ));
+        *const_cast<typename Loki::TypeTraits<SmartPtr<T> >::UnqualifiedType*>(&variable) = orxonox_cast<T*>(T::getSynchronisable(*(uint32_t*)(mem)));
+        mem += returnSize( variable );
+    }
+    
+    /** @brief saves the objectID of a pointer into the bytestream and increases the mem pointer */
+    template <class T> inline void saveAndIncrease( const WeakPtr<T>& variable, uint8_t*& mem )
+    {
+        if ( variable.get() )
+            *(uint32_t*)(mem) = static_cast<uint32_t>(variable->getObjectID());
+        else
+            *(uint32_t*)(mem) = OBJECTID_UNKNOWN;
+        mem += returnSize( variable );
+    }
+    
+    /** @brief checks whether the objectID of the variable is the same as in the bytestream */
+    template <class T> inline  bool checkEquality( const WeakPtr<T>& variable, uint8_t* mem )
+    {
+        if ( variable.get() )
+            return *(uint32_t*)(mem) == variable->getObjectID();
+        else
             return *(uint32_t*)(mem) == OBJECTID_UNKNOWN;
     }

code/trunk/src/libraries/network/synchronisable/Synchronisable.cc

@@ -49 +49 @@
   * Initializes all Variables and sets the right objectID_
   */
-  Synchronisable::Synchronisable(BaseObject* creator ){
+  Synchronisable::Synchronisable(BaseObject* creator )
+  {
     RegisterRootObject(Synchronisable);
     static uint32_t idCounter=0;
     objectMode_=0x1; // by default do not send data to server
-    if ( GameMode::isMaster() || ( Host::running() && Host::isServer() ) )
+    if ( GameMode::isMaster()/* || ( Host::running() && Host::isServer() )*/ )
     {
       this->setObjectID( idCounter++ );
@@ -73 +74 @@
     else
       this->creatorID_ = OBJECTID_UNKNOWN;
-
-    /*searchcreatorID:
-    if (creator)
-    {
-        Synchronisable* synchronisable_creator = orxonox_cast<Synchronisable*>(creator);
-        if (synchronisable_creator && synchronisable_creator->objectMode_)
-        {
-            this->creatorID = synchronisable_creator->getScene()->getObjectID();
-        }
-        else if (creator != creator->getCreator())
-        {
-            creator = creator->getCreator();
-            goto searchcreatorID;
-        }
-    }*/
   }
 
@@ -94 +80 @@
    * Delete all callback objects and remove objectID_ from the objectMap_
    */
-  Synchronisable::~Synchronisable(){
+  Synchronisable::~Synchronisable()
+  {
     // delete callback function objects
     if(!Identifier::isCreatingHierarchy()){
@@ -101 +88 @@
         deletedObjects_.push(objectID_);
     }
-    // delete all Synchronisable Variables from syncList ( which are also in stringList )
-    for(std::vector<SynchronisableVariableBase*>::iterator it = syncList.begin(); it!=syncList.end(); it++)
+    // delete all Synchronisable Variables from syncList_ ( which are also in stringList_ )
+    for(std::vector<SynchronisableVariableBase*>::iterator it = syncList_.begin(); it!=syncList_.end(); it++)
       delete (*it);
-    syncList.clear();
-    stringList.clear();
+    syncList_.clear();
+    stringList_.clear();
     std::map<uint32_t, Synchronisable*>::iterator it;
     it = objectMap_.find(objectID_);
@@ -118 +105 @@
    * @param b true if this object is located on a client or on a server
    */
-  void Synchronisable::setClient(bool b){
+  void Synchronisable::setClient(bool b)
+  {
     if(b) // client
       state_=0x2;
@@ -135 +123 @@
   {
     SynchronisableHeader header(mem);
-
-    if(!header.isDataAvailable())
-    {
-      mem += header.getDataSize();
-      return 0;
-    }
+    assert( !header.isDiffed() );
 
     COUT(4) << "fabricating object with id: " << header.getObjectID() << std::endl;
@@ -160 +143 @@
       if (!synchronisable_creator)
       {
-        mem += header.getDataSize(); //.TODO: this suckz.... remove size from header
+        mem += header.getDataSize()+SynchronisableHeader::getSize(); //.TODO: this suckz.... remove size from header
         assert(0); // TODO: uncomment this if we have a clean objecthierarchy (with destruction of children of objects) ^^
         return 0;
@@ -177 +160 @@
     no->setClassID(header.getClassID());
     assert(no->creatorID_ == header.getCreatorID());
+    if( creator )
+      bo->setLevel(creator->getLevel());          // Note: this ensures that the level is known on the client for child objects of the scene (and the scene itself)
     //assert(no->classID_ == header.getClassID());
     COUT(4) << "fabricate objectID_: " << no->objectID_ << " classID_: " << no->classID_ << std::endl;
@@ -196 +181 @@
    * @return true/false
    */
-  bool Synchronisable::deleteObject(uint32_t objectID_){
+  bool Synchronisable::deleteObject(uint32_t objectID_)
+  {
     if(!getSynchronisable(objectID_))
       return false;
@@ -213 +199 @@
    * @return pointer to the Synchronisable with the objectID_
    */
-  Synchronisable* Synchronisable::getSynchronisable(uint32_t objectID_){
+  Synchronisable* Synchronisable::getSynchronisable(uint32_t objectID_)
+  {
     std::map<uint32_t, Synchronisable*>::iterator it1;
     it1 = objectMap_.find(objectID_);
     if (it1 != objectMap_.end())
       return it1->second;
-
-//     ObjectList<Synchronisable>::iterator it;
-//     for(it = ObjectList<Synchronisable>::begin(); it; ++it){
-//       if( it->getObjectID()==objectID_ ){
-//         objectMap_[objectID_] = *it;
-//         return *it;
-//       }
-//     }
     // if the objects not in the map it should'nt exist at all anymore
     return NULL;
@@ -245 +224 @@
    * @return true: if !doSync or if everything was successfully saved
    */
-  uint32_t Synchronisable::getData(uint8_t*& mem, int32_t id, uint8_t mode){
+  uint32_t Synchronisable::getData(uint8_t*& mem, std::vector<uint32_t>& sizes, int32_t id, uint8_t mode)
+  {
+    unsigned int test = 0;
     if(mode==0x0)
       mode=state_;
@@ -253 +234 @@
     uint32_t tempsize = 0;
 #ifndef NDEBUG
+    uint8_t* oldmem = mem;
     if (this->classID_==0)
       COUT(3) << "classid 0 " << this->getIdentifier()->getName() << std::endl;
@@ -270 +252 @@
     // end copy header
 
-
-    COUT(5) << "Synchronisable getting data from objectID_: " << objectID_ << " classID_: " << classID_ << std::endl;
+    CCOUT(5) << "getting data from objectID_: " << objectID_ << ", classID_: " << classID_ << std::endl;
+//     COUT(4) << "objectid: " << this->objectID_ << ":";
     // copy to location
-    for(i=syncList.begin(); i!=syncList.end(); ++i){
-      tempsize += (*i)->getData( mem, mode );
+    for(i=syncList_.begin(); i!=syncList_.end(); ++i)
+    {
+      uint32_t varsize = (*i)->getData( mem, mode );
+//       COUT(4) << " " << varsize;
+      tempsize += varsize;
+      sizes.push_back(varsize);
+      ++test;
       //tempsize += (*i)->getSize( mode );
     }
-
-    tempsize += SynchronisableHeader::getSize();
+//     COUT(4) << endl;
+
     header.setObjectID( this->objectID_ );
     header.setCreatorID( this->creatorID_ );
     header.setClassID( this->classID_ );
-    header.setDataAvailable( true );
     header.setDataSize( tempsize );
+    assert( tempsize == mem-oldmem-SynchronisableHeader::getSize() );
+    assert( test == this->getNrOfVariables() );
+    header.setDiffed(false);
+    tempsize += SynchronisableHeader::getSize();
 
 #ifndef NDEBUG
@@ -300 +290 @@
    * @return true/false
    */
-  bool Synchronisable::updateData(uint8_t*& mem, uint8_t mode, bool forceCallback){
+  bool Synchronisable::updateData(uint8_t*& mem, uint8_t mode, bool forceCallback)
+  {
     if(mode==0x0)
       mode=state_;
-    std::vector<SynchronisableVariableBase *>::iterator i;
-    if(syncList.empty()){
+    if(syncList_.empty())
+    {
       assert(0);
-      COUT(4) << "Synchronisable::updateData syncList is empty" << std::endl;
+      COUT(2) << "Synchronisable::updateData syncList_ is empty" << std::endl;
       return false;
     }
@@ -312 +303 @@
     uint8_t* data=mem;
     // start extract header
-    SynchronisableHeader syncHeader(mem);
-    assert(syncHeader.getObjectID()==this->objectID_);
-    assert(syncHeader.getCreatorID()==this->creatorID_);
-    assert(syncHeader.getClassID()==this->classID_);
-    if(syncHeader.isDataAvailable()==false){
-      mem += syncHeader.getDataSize();
-      return true;
-    }
-
-    mem += SynchronisableHeader::getSize();
-    // stop extract header
+    SynchronisableHeaderLight syncHeaderLight(mem);
+    assert(syncHeaderLight.getObjectID()==this->getObjectID());
 
     //COUT(5) << "Synchronisable: objectID_ " << syncHeader.getObjectID() << ", classID_ " << syncHeader.getClassID() << " size: " << syncHeader.getDataSize() << " synchronising data" << std::endl;
-    for(i=syncList.begin(); i!=syncList.end(); i++)
-    {
-      assert( mem <= data+syncHeader.getDataSize() ); // always make sure we don't exceed the datasize in our stream
-      (*i)->putData( mem, mode, forceCallback );
-    }
-    assert(mem == data+syncHeader.getDataSize());
+    if( !syncHeaderLight.isDiffed() )
+    {
+      SynchronisableHeader syncHeader2(mem);
+      assert( this->getClassID() == syncHeader2.getClassID() );
+      assert( this->getCreatorID() == syncHeader2.getCreatorID() );
+      mem += SynchronisableHeader::getSize();
+      std::vector<SynchronisableVariableBase *>::iterator i;
+      for(i=syncList_.begin(); i!=syncList_.end(); i++)
+      {
+        assert( mem <= data+syncHeader2.getDataSize()+SynchronisableHeader::getSize() ); // always make sure we don't exceed the datasize in our stream
+        (*i)->putData( mem, mode, forceCallback );
+      }
+      assert(mem == data+syncHeaderLight.getDataSize()+SynchronisableHeader::getSize() );
+    }
+    else
+    {
+      mem += SynchronisableHeaderLight::getSize();
+//       COUT(0) << "objectID: " << this->objectID_ << endl;
+      while( mem < data+syncHeaderLight.getDataSize()+SynchronisableHeaderLight::getSize() )
+      {
+        VariableID varID = *(VariableID*)mem;
+//         COUT(0) << "varID: " << varID << endl;
+        assert( varID < syncList_.size() );
+        mem += sizeof(VariableID);
+        syncList_[varID]->putData( mem, mode, forceCallback );
+      }
+      assert(mem == data+syncHeaderLight.getDataSize()+SynchronisableHeaderLight::getSize() );
+    }
     return true;
   }
@@ -340 +344 @@
   * @return amount of bytes
   */
-  uint32_t Synchronisable::getSize(int32_t id, uint8_t mode){
-    int tsize=SynchronisableHeader::getSize();
+  uint32_t Synchronisable::getSize(int32_t id, uint8_t mode)
+  {
+    uint32_t tsize=SynchronisableHeader::getSize();
     if (mode==0x0)
       mode=state_;
@@ -349 +354 @@
     tsize += this->dataSize_;
     std::vector<SynchronisableVariableBase*>::iterator i;
-    for(i=stringList.begin(); i!=stringList.end(); ++i){
+    for(i=stringList_.begin(); i!=stringList_.end(); ++i)
+    {
       tsize += (*i)->getSize( mode );
     }
@@ -360 +366 @@
    * @return true/false
    */
-  bool Synchronisable::doSync(int32_t id, uint8_t mode){
+  bool Synchronisable::doSync(int32_t id, uint8_t mode)
+  {
     if(mode==0x0)
       mode=state_;
-    return ( (this->objectMode_ & mode)!=0 && (!syncList.empty() ) );
-  }
-
-  /**
-   * This function looks at the header located in the bytestream and checks wheter objectID_ and classID_ match with the Synchronisables ones
-   * @param mem pointer to the bytestream
-   */
-  bool Synchronisable::isMyData(uint8_t* mem)
-  {
-    SynchronisableHeader header(mem);
-    assert(header.getObjectID()==this->objectID_);
-    return header.isDataAvailable();
+    return ( (this->objectMode_ & mode)!=0 && (!syncList_.empty() ) );
   }
 
@@ -385 +381 @@
    * @param mode same as in registerVar
    */
-  void Synchronisable::setSyncMode(uint8_t mode){
+  void Synchronisable::setSyncMode(uint8_t mode)
+  {
     assert(mode==0x0 || mode==0x1 || mode==0x2 || mode==0x3);
     this->objectMode_=mode;
@@ -397 +394 @@
     else
       sv = new SynchronisableVariable<std::string>(variable, mode, cb);
-    syncList.push_back(sv);
-    stringList.push_back(sv);
+    syncList_.push_back(sv);
+    stringList_.push_back(sv);
+  }
+
+template <> void Synchronisable::unregisterVariable( std::string& variable )
+  {
+    bool unregistered_nonexistent_variable = true;
+    std::vector<SynchronisableVariableBase*>::iterator it = syncList_.begin();
+    while(it!=syncList_.end())
+    {
+      if( ((*it)->getReference()) == &variable )
+      {
+        delete (*it);
+        syncList_.erase(it);
+        unregistered_nonexistent_variable = false;
+        break;
+      }
+      else
+        ++it;
+    }
+    assert(unregistered_nonexistent_variable == false);
+    
+    it = stringList_.begin();
+    while(it!=stringList_.end())
+    {
+      if( ((*it)->getReference()) == &variable )
+      {
+        delete (*it);
+        stringList_.erase(it);
+        return;
+      }
+      else
+        ++it;
+    }
+    unregistered_nonexistent_variable = true;
+    assert(unregistered_nonexistent_variable == false); //if we reach this point something went wrong:
+    // the variable has not been registered before
   }
 

code/trunk/src/libraries/network/synchronisable/Synchronisable.h

@@ -37 +37 @@
 #include <map>
 #include <queue>
+#include <set>
 
 #include "util/mbool.h"
@@ -64 +65 @@
     };
   }
+  
+  typedef uint8_t VariableID;
 
   /**
@@ -71 +74 @@
    * in an emulated bitset.
    * Bit 1 to 31 store the size of the Data the synchronisable consumes in the stream
-   * Bit 32 is a bool and defines whether the data is actually stored or is just filled up with 0
+   * Bit 32 is a bool and defines whether the variables are stored in diff mode
    * Byte 5 to 8: objectID_
    * Byte 9 to 12: classID_
@@ -77 +80 @@
    */
   class _NetworkExport SynchronisableHeader{
+    friend class SynchronisableHeaderLight;
     private:
-      uint8_t *data_;
+      uint8_t* data_;
     public:
       SynchronisableHeader(uint8_t* data)
         { data_ = data; }
       inline static uint32_t getSize()
-        { return 16; }
-      inline uint32_t getDataSize() const
-        { return (*(uint32_t*)data_) & 0x7FFFFFFF; } //only use the first 31 bits
-      inline void setDataSize(uint32_t size)
-        { *(uint32_t*)(data_) = (size & 0x7FFFFFFF) | (*(uint32_t*)(data_) & 0x80000000 ); }
-      inline bool isDataAvailable() const
-        { return ( (*(uint32_t*)data_) & 0x80000000 ) == 0x80000000; }
-      inline void setDataAvailable( bool b)
-        { *(uint32_t*)(data_) = (b << 31) | (*(uint32_t*)(data_) & 0x7FFFFFFF ); }
+        { return 14; }
+      inline uint16_t getDataSize() const
+        { return (*(uint16_t*)data_) & 0x7FFF; } //only use the first 15 bits
+      inline void setDataSize(uint16_t size)
+        { *(uint16_t*)(data_) = (size & 0x7FFF) | (*(uint16_t*)(data_) & 0x8000 ); }
+      inline bool isDiffed() const
+        { return ( (*(uint16_t*)data_) & 0x8000 ) == 0x8000; }
+      inline void setDiffed( bool b)
+        { *(uint16_t*)(data_) = (b << 15) | (*(uint16_t*)(data_) & 0x7FFF ); }
       inline uint32_t getObjectID() const
-        { return *(uint32_t*)(data_+4); }
+        { return *(uint32_t*)(data_+2); }
       inline void setObjectID(uint32_t objectID_)
-        { *(uint32_t*)(data_+4) = objectID_; }
+        { *(uint32_t*)(data_+2) = objectID_; }
       inline uint32_t getClassID() const
-        { return *(uint32_t*)(data_+8); }
+        { return *(uint32_t*)(data_+6); }
       inline void setClassID(uint32_t classID_)
-        { *(uint32_t*)(data_+8) = classID_; }
+        { *(uint32_t*)(data_+6) = classID_; }
       inline uint32_t getCreatorID() const
-        { return *(uint32_t*)(data_+12); }
+        { return *(uint32_t*)(data_+10); }
       inline void setCreatorID(uint32_t creatorID_)
-        { *(uint32_t*)(data_+12) = creatorID_; }
+        { *(uint32_t*)(data_+10) = creatorID_; }
       inline void operator=(SynchronisableHeader& h)
         { memcpy(data_, h.data_, getSize()); }
   };
 
+    /**
+   * @brief: stores information about a Synchronisable (light version)
+   *
+   * This class stores the information about a Synchronisable (objectID_, dataSize)
+   * in an emulated bitset.
+   * Bit 1 to 31 store the size of the Data the synchronisable consumes in the stream
+   * Bit 32 is a bool and defines whether the variables are stored in diff mode
+   * Byte 5 to 8: objectID_
+   */
+  class _NetworkExport SynchronisableHeaderLight{
+    private:
+      uint8_t* data_;
+    public:
+      SynchronisableHeaderLight(uint8_t* data)
+        { data_ = data; }
+      inline static uint32_t getSize()
+        { return 6; }
+      inline uint16_t getDataSize() const
+        { return (*(uint16_t*)data_) & 0x7FFF; } //only use the first 31 bits
+      inline void setDataSize(uint16_t size)
+        { *(uint16_t*)(data_) = (size & 0x7FFFFFFF) | (*(uint16_t*)(data_) & 0x8000 ); }
+      inline bool isDiffed() const
+        { return ( (*(uint16_t*)data_) & 0x8000 ) == 0x8000; }
+      inline void setDiffed( bool b)
+        { *(uint16_t*)(data_) = (b << 15) | (*(uint16_t*)(data_) & 0x7FFF ); }
+      inline uint32_t getObjectID() const
+        { return *(uint32_t*)(data_+2); }
+      inline void setObjectID(uint32_t objectID_)
+        { *(uint32_t*)(data_+2) = objectID_; }
+      inline void operator=(SynchronisableHeader& h)
+        { memcpy(data_, h.data_, getSize()); }
+  };
 
   /**
@@ -134 +170 @@
 
     void setSyncMode(uint8_t mode);
+    
+    inline uint32_t getNrOfVariables(){ return this->syncList_.size(); }
+    inline uint32_t getVarSize( VariableID ID )
+    { return this->syncList_[ID]->getSize(state_); }
 
   protected:
     Synchronisable(BaseObject* creator);
     template <class T> void registerVariable(T& variable, uint8_t mode=0x1, NetworkCallbackBase *cb=0, bool bidirectional=false);
+    template <class T> void registerVariable(std::set<T>& variable, uint8_t mode=0x1, NetworkCallbackBase *cb=0, bool bidirectional=false);
+    template <class T> void unregisterVariable(T& var);
 
     void setPriority(unsigned int freq){ objectFrequency_ = freq; }
@@ -143 +185 @@
 
   private:
-    uint32_t getData(uint8_t*& men, int32_t id, uint8_t mode=0x0);
+    uint32_t getData(uint8_t*& mem, std::vector<uint32_t>& sizes, int32_t id, uint8_t mode);
     uint32_t getSize(int32_t id, uint8_t mode=0x0);
     bool updateData(uint8_t*& mem, uint8_t mode=0x0, bool forceCallback=false);
-    bool isMyData(uint8_t* mem);
     bool doSync(int32_t id, uint8_t mode=0x0);
 
@@ -156 +197 @@
     uint32_t classID_;
 
-    std::vector<SynchronisableVariableBase*> syncList;
-    std::vector<SynchronisableVariableBase*> stringList;
+    std::vector<SynchronisableVariableBase*> syncList_;
+    std::vector<SynchronisableVariableBase*> stringList_;
     uint32_t dataSize_; //size of all variables except strings
     static uint8_t state_; // detemines wheter we are server (default) or client
@@ -171 +212 @@
     if (bidirectional)
     {
-      syncList.push_back(new SynchronisableVariableBidirectional<T>(variable, mode, cb));
-      this->dataSize_ += syncList.back()->getSize(state_);
+      syncList_.push_back(new SynchronisableVariableBidirectional<T>(variable, mode, cb));
+      this->dataSize_ += syncList_.back()->getSize(state_);
     }
     else
     {
-      syncList.push_back(new SynchronisableVariable<T>(variable, mode, cb));
+      syncList_.push_back(new SynchronisableVariable<T>(variable, mode, cb));
       if ( this->state_ == mode )
-        this->dataSize_ += syncList.back()->getSize(state_);
+        this->dataSize_ += syncList_.back()->getSize(state_);
     }
   }
+  
+  template <class T> void Synchronisable::unregisterVariable(T& variable){
+    std::vector<SynchronisableVariableBase*>::iterator it = syncList_.begin();
+    while(it!=syncList_.end()){
+      if( ((*it)->getReference()) == &variable ){
+        this->dataSize_ -= (*it)->getSize(Synchronisable::state_);
+        delete (*it);
+        syncList_.erase(it);
+        return;
+      }
+      else
+        it++;
+    }
+    bool unregistered_nonexistent_variable = false;
+    assert(unregistered_nonexistent_variable); //if we reach this point something went wrong:
+    // the variable has not been registered before
+  }
+
+  template <class T> void Synchronisable::registerVariable( std::set<T>& variable, uint8_t mode, NetworkCallbackBase *cb, bool bidirectional)
+  {
+    SynchronisableVariableBase* sv;
+    if (bidirectional)
+      sv = new SynchronisableVariableBidirectional<std::set<T> >(variable, mode, cb);
+    else
+      sv = new SynchronisableVariable<std::set<T> >(variable, mode, cb);
+    syncList_.push_back(sv);
+    stringList_.push_back(sv);
+  }
 
   template <> _NetworkExport void Synchronisable::registerVariable( std::string& variable, uint8_t mode, NetworkCallbackBase *cb, bool bidirectional);
+//   template <class T> _NetworkExport void Synchronisable::registerVariable<std::set<T> >( std::set<T>& variable, uint8_t mode, NetworkCallbackBase *cb, bool bidirectional);
+  template <> _NetworkExport void Synchronisable::unregisterVariable( std::string& variable );