#ifndef _utl_CountedObjectRegistry_h_
#define _utl_CountedObjectRegistry_h_

/**
  \file
  Registry for all counted objects

  \author Lukas Nellen
  \version $Id: CountedObjectRegistry.h 14717 2009-09-17 20:24:36Z lukas $
  \date 13 Jan 2004
*/

#include <string>
#include <map>
#include <iostream>
#include <typeinfo>


namespace utl {

  /**
    \class CountedObjectRegistry CountedObjectRegistry.h "utl/CountedObjectRegistry.h"

    \brief Registry for counted objects

    This class maintains a global register of all objects that use
    the \c CountedObject template. This provides a way to generate
    statistics about all counted objects.

    \author Lukas Nellen
    \date 13 Jan 2004
    \ingroup stl
  */

  class CountedObjectRegistry {

  public:
    typedef long int Counter;

    ~CountedObjectRegistry();

    template<class T>
    static
    void
    RegisterCountedObject()
    {
      RegisterObjectCounters(typeid(typename T::CountedType),
			     T::GetObjectsCreated,
			     T::GetObjectsDestroyed,
			     T::GetObjectsExisting,
                             T::GetObjectsCopied,
                             T::GetObjectsAssigned);
    }

    static void PrintStatistics(std::ostream& theStream,
                                const std::string& filter = "");

  private:
    CountedObjectRegistry();

    typedef Counter (*intFP)();

    class Counters {

    public:
      Counters(const intFP countCreated, const intFP countDestroyed,
               const intFP countExisting, const intFP countCopied,
               const intFP countAssigned);

      Counter GetCreated() const;
      Counter GetDestroyed() const;
      Counter GetExisting() const;
      Counter GetCopied() const;
      Counter GetAssigned() const;

    private:
      intFP fCountCreated;
      intFP fCountDestroyed;
      intFP fCountExisting;
      intFP fCountCopied;
      intFP fCountAssigned;

    };

    static void RegisterObjectCounters(const std::type_info& theType,
				       const intFP countCreated,
				       const intFP countDestroyed,
				       const intFP countExisting,
                                       const intFP countCopied,
                                       const intFP countAssigned);

    static std::map<std::string, Counters> gfRegistry;

  };

}


#endif

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