tjstatic.h

/***************************************************************************
                          tjstatic.h  -  description
                             -------------------
    begin                : Sun Jul 7 2002
    copyright            : (C) 2001 by Thies H. Jochimsen
    email                : jochimse@cns.mpg.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef TJSTATIC_H
#define TJSTATIC_H


#include <tjutils/tjutils.h>
#include <tjutils/tjthread.h>



class Static {

 public:

  Static() {}
  virtual ~Static() {}

  // destroy all static objects manually
  static void destroy_all();

  static void append_to_destructor_list(Static* sp);

 protected:

  static STD_list<Static*>* destructor_list;
};



template<class T>
struct StaticAlloc : public virtual Static {

  StaticAlloc() {
  }

  ~StaticAlloc() {
    T::destroy_static();
  }
};



template<class T>
class StaticHandler {

 public:
  StaticHandler() {
    if(!staticdone) { // fast check
      staticdone=true; // must be assigned before call to T::init_static() to avoid infinite loops
      Static* sp=new StaticAlloc<T>;
      Static::append_to_destructor_list(sp);
      T::init_static();
    }
  }


 private:
  static bool staticdone;

};

#endif

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