JSingleton.hh

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#ifndef __JLANG__JSINGLETON__
#define __JLANG__JSINGLETON__
 
/**
 * \author mdejong
 */
 
namespace JLANG {}
namespace JPP { using namespace JLANG; }
 
namespace JLANG {
 
  
  /**
   * Simple singleton class.
   */
  template<class T>
  struct JSingleton {
 
    typedef T  data_type;
 
    /**
     * Get unique instance of template class.
     *
     * \return           object
     */
    static data_type& getInstance() 
    {
      static data_type value;
 
      return value;
    }
 
  protected:
    /**
     * Default constructor.
     */
    JSingleton()
    {}
 
 
    /**
     * Copy constructor.
     */
    JSingleton(const JSingleton&)
    {}
 
  private:
    JSingleton& operator=(const JSingleton&);
  };
}
 
#endif