ndbautoptr.hpp

mysql-5.0.22.tar.gz源码包

/* Copyright (C) 2003 MySQL AB

   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.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#ifndef __NDB_AUTO_PTR_HPP
#define __NDB_AUTO_PTR_HPP

#include <ndb_global.h>
#include <my_sys.h>

template<typename T>
class NdbAutoPtr {
  T * m_obj;
public:
  NdbAutoPtr(T * obj = 0){ m_obj = obj;}
  void reset(T * obj = 0) { if (m_obj) free(m_obj); m_obj = obj; }
  ~NdbAutoPtr() { if (m_obj) free(m_obj);}
};

template<typename T>
class NdbAutoObjPtr {
  T * m_obj;
public:
  NdbAutoObjPtr(T * obj = 0){ m_obj = obj;}
  void reset(T * obj = 0) { if (m_obj) delete m_obj; m_obj = obj; }
  ~NdbAutoObjPtr() { if (m_obj) delete m_obj;}
};

template<typename T>
class NdbAutoObjArrayPtr {
  T * m_obj;
public:
  NdbAutoObjArrayPtr(T * obj = 0){ m_obj = obj;}
  void reset(T * obj = 0) { if (m_obj) delete[] m_obj; m_obj = obj; }
  ~NdbAutoObjArrayPtr() { if (m_obj) delete[] m_obj;}
};

template<typename T>
class My_auto_ptr {
  T * m_obj;
public:
  My_auto_ptr(T * obj = 0){ m_obj = obj;}
  void reset(T * obj = 0) { if (m_obj) my_free(m_obj,MYF(0)); m_obj = obj; }
  ~My_auto_ptr() { if (m_obj) my_free(m_obj,MYF(0));}
};

#endif