idprovider.hh

#ifndef DUNE_FEM_IDPROVIDER_HH
#define DUNE_FEM_IDPROVIDER_HH
 
#include <cstdlib>
 
#include <dune/fem/storage/singleton.hh>
 
namespace Dune
{
 
  namespace Fem
  {
 
    class IdProvider
    {
    public:
      friend class Dune::Fem::Singleton< IdProvider >;
 
      static IdProvider& instance()
      {
        return Singleton< IdProvider >::instance();
      }
 
      size_t newId() { return lowestFreeId_++; }
 
      IdProvider() :
        lowestFreeId_(0)
      {}
 
    private:
      IdProvider(const IdProvider&);
      IdProvider& operator=(const IdProvider&);
 
    private:
      size_t lowestFreeId_;
    };
 
  } // namespace Fem
 
} // namespace Dune
 
#endif // #ifndef DUNE_FEM_IDPROVIDER_HH