ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkFEMFactoryBase.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 /*=========================================================================
00019  *
00020  *  Portions of this file are subject to the VTK Toolkit Version 3 copyright.
00021  *
00022  *  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00023  *
00024  *  For complete copyright, license and disclaimer of warranty information
00025  *  please refer to the NOTICE file at the top of the ITK source tree.
00026  *
00027  *=========================================================================*/
00028 #ifndef __itkFEMFactoryBase_h
00029 #define __itkFEMFactoryBase_h
00030 
00031 #include "itkObjectFactoryBase.h"
00032 
00033 namespace itk
00034 {
00041 class ITK_EXPORT FEMFactoryBase : public ObjectFactoryBase
00042 {
00043 public:
00045   typedef FEMFactoryBase           Self;
00046   typedef ObjectFactoryBase        Superclass;
00047   typedef SmartPointer<Self>       Pointer;
00048   typedef SmartPointer<const Self> ConstPointer;
00049 
00051   virtual const char * GetITKSourceVersion(void) const;
00052 
00053   virtual const char * GetDescription(void) const;
00054 
00056   itkTypeMacro(FEMFactoryBase, ObjectFactoryBase);
00057 
00059   itkFactorylessNewMacro(Self);
00060 
00062   static void RegisterDefaultTypes();  //HACK: This should not have a public interface since it does nothing except during instantiation of the class.
00063 
00065   static FEMFactoryBase * GetFactory()
00066   {
00067     if( m_Factory == 0 )
00068       {
00069       m_CreationLock.Lock();
00070       //Need to make sure that during gaining access
00071       //to the lock that some other thread did not
00072       //initialize the singleton.
00073       if( m_Factory == 0 )
00074         {
00075         // Make and register the factory
00076         FEMFactoryBase::Pointer p = FEMFactoryBase::New();
00077         if( p.IsNull() )
00078           {
00079           std::ostringstream message;
00080           message << "itk::ERROR: " << "FEMFactoryBase"
00081             << " instance not created";
00082           ::itk::ExceptionObject e_(__FILE__, __LINE__, message.str().c_str(), ITK_LOCATION);
00083           throw e_; /* Explicit naming to work around for Intel compiler bug. */
00084           }
00085         ObjectFactoryBase::RegisterFactory( p );
00086         m_Factory = p.GetPointer();
00087         }
00088       m_CreationLock.Unlock();
00089       m_Factory->RegisterDefaultTypes(); //Not initialzie all default types.
00090       }
00091     return m_Factory;
00092   }
00094 
00095   void RegisterType(const char* classOverride,
00096                     const char* overrideClassName,
00097                     const char* description,
00098                     bool enableFlag,
00099                     CreateObjectFunctionBase* createFunction)
00100   {
00101     this->RegisterOverride( classOverride, overrideClassName, description, enableFlag, createFunction );
00102   }
00103 
00104 protected:
00105   FEMFactoryBase();
00106   virtual ~FEMFactoryBase();
00107 private:
00108   FEMFactoryBase(const Self &); // purposely not implemented
00109   void operator=(const Self &); // purposely not implemented
00110 
00111   static SimpleFastMutexLock m_CreationLock;
00112   static FEMFactoryBase*     m_Factory;
00113 };
00114 } // end namespace itk
00115 
00116 #endif
00117