CountedObjectRegistry.h

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#ifndef _utl_CountedObjectRegistry_h_
#define _utl_CountedObjectRegistry_h_

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


namespace utl {

  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> fgRegistry;

  };

}


#endif