Changeset 3223 for code/branches/core4/src/core

Timestamp:

Jun 23, 2009, 7:28:48 PM (16 years ago)

Author:

rgrieder

Message:

Add a new core-feature: orxonox_cast<T>()
The functions casts objects like dynamic_cast, but uses the identifier instead for MSVC (much faster) and is just a redirection to dynamic_cast for GCC.
Also replaced almost all dynamic_casts (of course only those related to the class hierarchy).

Location:

code/branches/core4/src/core

Files:

• EventIncludes.h (modified) (2 diffs)
• Identifier.cc (modified) (4 diffs)
• Identifier.h (modified) (5 diffs)
• Iterator.h (modified) (2 diffs)
• OrxonoxClass.h (modified) (2 diffs)
• XMLPort.h (modified) (1 diff)

code/branches/core4/src/core/EventIncludes.h

@@ -54 +54 @@
         this->addEventContainer(eventname, containername); \
     } \
-    event.castedOriginator_ = dynamic_cast<subclassname*>(event.originator_); \
+    event.castedOriginator_ = orxonox::orxonox_cast<subclassname>(event.originator_); \
     containername->process(this, event)
 
@@ -66 +66 @@
         this->addEventContainer(eventname, containername); \
     } \
-    event.castedOriginator_ = dynamic_cast<subclassname*>(event.originator_); \
+    event.castedOriginator_ = orxonox::orxonox_cast<subclassname>(event.originator_); \
     containername->process(this, event)
 

code/branches/core4/src/core/Identifier.cc

@@ -47 +47 @@
     // ###       Identifier        ###
     // ###############################
-    int Identifier::hierarchyCreatingCounter_s = 0; // Set the static member variable hierarchyCreatingCounter_s to zero (this static member variable is ok: it's used in main(), not before)
+    int Identifier::hierarchyCreatingCounter_s = 0;
+    unsigned int Identifier::classIDCounter_s = 0;
 
     /**
@@ -53 +54 @@
     */
     Identifier::Identifier()
+        : classID_(classIDCounter_s++)
     {
         this->objects_ = new ObjectListBase(this);
@@ -67 +69 @@
         this->directChildren_ = new std::set<const Identifier*>();
 
-        // Use a static variable because the classID gets created before main() and that's why we should avoid static member variables
-        static unsigned int classIDcounter_s = 0;
-        this->classID_ = classIDcounter_s++;
+        // Default network ID is the class ID
+        this->networkID_ = this->classID_;
     }
 
@@ -244 +245 @@
     void Identifier::setNetworkID(uint32_t id)
     {
-        Factory::changeNetworkID(this, this->classID_, id);
-        this->classID_ = id;
+        Factory::changeNetworkID(this, this->networkID_, id);
+        this->networkID_ = id;
     }
 

code/branches/core4/src/core/Identifier.h

@@ -224 +224 @@
 
             /** @brief Returns the network ID to identify a class through the network. @return the network ID */
-            inline const uint32_t getNetworkID() const { return this->classID_; }
+            inline const uint32_t getNetworkID() const { return this->networkID_; }
 
             /** @brief Sets the network ID to a new value. @param id The new value */
             void setNetworkID(uint32_t id);
+
+            /** @brief Returns the unique ID of the class */
+            FORCEINLINE unsigned int getClassID() const { return this->classID_; }
 
             void addConfigValueContainer(const std::string& varname, ConfigValueContainer* container);
@@ -305 +308 @@
             BaseFactory* factory_;                                         //!< The Factory, able to create new objects of the given class (if available)
             static int hierarchyCreatingCounter_s;                         //!< Bigger than zero if at least one Identifier stores its parents (its an int instead of a bool to avoid conflicts with multithreading)
-            uint32_t classID_;                                             //!< The network ID to identify a class through the network
+            uint32_t networkID_;                                           //!< The network ID to identify a class through the network
+            const unsigned int classID_;                                   //!< Uniquely identifies a class (might not be the same as the networkID_)
+            static unsigned int classIDCounter_s;                          //!< Static counter for the unique classIDs
 
             bool bHasConfigValues_;                                        //!< True if this class has at least one assigned config value
@@ -427 +432 @@
         COUT(5) << "*** ClassIdentifier: Added object to " << this->getName() << "-list." << std::endl;
         object->getMetaList().add(this->objects_, this->objects_->add(new ObjectListElement<T>(object)));
+        // Add pointer of type T to the map in the OrxonoxClass instance that enables "dynamic_casts"
+        object->objectPointers_.push_back(std::make_pair(this->getClassID(), reinterpret_cast<void*>(object)));
     }
 
@@ -444 +451 @@
             for (std::set<const Identifier*>::const_iterator it = this->getChildrenBegin(); it != this->getChildrenEnd(); ++it)
                 (*it)->updateConfigValues(false);
+    }
+
+
+    // ###############################
+    // ###      orxonox_cast       ###
+    // ###############################
+    /**
+    @brief
+        Casts on object of type OrxonoxClass to any derived type that is
+        registered in the class hierarchy.
+    @return
+        Returns NULL if the cast is not possible
+    @note
+        In case of NULL return (and using MSVC), a dynamic_cast might still be possible if
+        a class forgot to register its objects.
+        Also note that the function is implemented differently for GCC/MSVC.
+    */
+    template <class T, class U>
+    FORCEINLINE T* orxonox_cast(U* source)
+    {
+#ifdef ORXONOX_COMPILER_MSVC
+        return source->template getDerivedPointer<T>(ClassIdentifier<T>::getIdentifier()->getClassID());
+#else
+        return dynamic_cast<T*>(source);
+#endif
     }
 
@@ -539 +571 @@
                 if (newObject)
                 {
-                    return dynamic_cast<T*>(newObject);
+                    return orxonox_cast<T>(newObject);
                 }
                 else

code/branches/core4/src/core/Iterator.h

@@ -240 +240 @@
             {
                 if (this->element_)
-                    return dynamic_cast<T*>(this->element_->objectBase_);
+                    return orxonox_cast<T>(this->element_->objectBase_);
                 else
                     return 0;
@@ -252 +252 @@
             {
                 if (this->element_)
-                    return dynamic_cast<T*>(this->element_->objectBase_);
+                    return orxonox_cast<T>(this->element_->objectBase_);
                 else
                     return 0;

code/branches/core4/src/core/OrxonoxClass.h

@@ -50 +50 @@
     class _CoreExport OrxonoxClass
     {
+        template <class T>
+        friend class ClassIdentifier;
+
         public:
             OrxonoxClass();
@@ -101 +104 @@
             bool isDirectParentOf(const OrxonoxClass* object);
 
+            /**
+            @brief
+                Returns a valid pointer of any derived type that is
+                registered in the class hierarchy.
+            @return
+                Returns NULL if the no pointer was found.
+            */
+            template <class T>
+            FORCEINLINE T* getDerivedPointer(unsigned int classID) const
+            {
+                for (int i = this->objectPointers_.size() - 1; i >= 0; --i)
+                {
+                    if (this->objectPointers_[i].first == classID)
+                        return reinterpret_cast<T*>(this->objectPointers_[i].second);
+                }
+                return NULL;
+            }
+
         private:
             Identifier* identifier_;                   //!< The Identifier of the object
             std::set<const Identifier*>* parents_;     //!< List of all parents of the object
             MetaObjectList* metaList_;                 //!< MetaObjectList, containing all ObjectLists and ObjectListElements the object is registered in
+            //! 'Fast map' that holds this-pointers of all derived types
+            std::vector<std::pair<unsigned int, void*> > objectPointers_;
     };
 }

code/branches/core4/src/core/XMLPort.h

@@ -565 +565 @@
                                                     newObject->setLoaderIndentation(object->getLoaderIndentation() + "  ");
 
-                                                    O* castedObject = dynamic_cast<O*>(newObject);
+                                                    O* castedObject = orxonox_cast<O>(newObject);
                                                     assert(castedObject);