countedobj.cpp

Go to the documentation of this file.

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "../stdafx.h"
 
#include "countedptr.hpp"
 
#include "../safeguards.h"
 
int32_t SimpleCountedObject::AddRef()
{
  return ++m_ref_cnt;
}
 
int32_t SimpleCountedObject::Release()
{
  int32_t res = --m_ref_cnt;
  assert(res >= 0);
  if (res == 0) {
    try {
      FinalRelease(); // may throw, for example ScriptTest/ExecMode
    } catch (...) {
      delete this;
      throw;
    }
    delete this;
  }
  return res;
}