/*

Copyright (C) 2012-2017 John W. Eaton

This file is part of Octave.

Octave 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 3 of the License, or
(at your option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include <lo-error.h>
#include <singleton-cleanup.h>

singleton_cleanup_list *singleton_cleanup_list::instance = 0;

singleton_cleanup_list::~singleton_cleanup_list (void)
{
  for (fptr fcn : fcn_list)
    {
      fcn ();
    }
}

bool
singleton_cleanup_list::instance_ok (void)
{
  bool retval = true;

  if (! instance)
    instance = new singleton_cleanup_list ();

  if (! instance)
    (*current_liboctave_error_handler)
      ("unable to create singleton_cleanup_list object!");

  return retval;
}