/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * Copyright (c) 2006,2007 INRIA, INESC Porto

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 * Author: Gustavo Carneiro <gjc@inescporto.pt>

 */

#include "breakpoint.h"

#include "ns3/core-config.h"

#include "log.h"

#ifdef HAVE_SIGNAL_H

# include <signal.h>

#endif

NS_LOG_COMPONENT_DEFINE ("Breakpoint");

namespace ns3 {

#if defined (HAVE_SIGNAL_H) && defined (SIGTRAP)

void

BreakpointFallback (void)

{

  NS_LOG_FUNCTION_NOARGS ();

  raise (SIGTRAP);

}

#else

void

BreakpointFallback (void)

{

  NS_LOG_FUNCTION (this);

  int *a = 0;

  /**

   * we test here to allow a debugger to change the value of

   * the variable 'a' to allow the debugger to avoid the 

   * subsequent segfault.

   */

  if (a == 0)

    {

      *a = 0;

    }

}

#endif // HAVE_SIGNAL_H

} // namespace ns3