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

/*

 * Copyright (c) 2008 INRIA

 *

 * 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.inria.fr>

 */

#include "fatal-error.h"

#include "system-thread.h"

#include "log.h"

NS_LOG_COMPONENT_DEFINE ("SystemThread");

namespace ns3 {

#ifdef HAVE_PTHREAD_H

SystemThread::SystemThread (Callback<void> callback)

  : m_callback (callback)

{

  NS_LOG_FUNCTION (this);

}

SystemThread::~SystemThread()

{

  NS_LOG_FUNCTION (this);

}

void

SystemThread::Start (void)

{

  NS_LOG_FUNCTION (this);

  int rc = pthread_create (&m_thread, NULL, &SystemThread::DoRun,

                           (void *)this);

  if (rc) 

    {

      NS_FATAL_ERROR ("pthread_create failed: " << rc << "=\"" << 

                      strerror (rc) << "\".");

    }

}

void

SystemThread::Join (void)

{

  NS_LOG_FUNCTION (this);

  void *thread_return;

  int rc = pthread_join (m_thread, &thread_return);

  if (rc) 

    {

      NS_FATAL_ERROR ("pthread_join failed: " << rc << "=\"" << 

                      strerror (rc) << "\".");

    }

}

void *

SystemThread::DoRun (void *arg)

{

  NS_LOG_FUNCTION (arg);

  SystemThread *self = static_cast<SystemThread *> (arg);

  self->m_callback ();

  return 0;

}

SystemThread::ThreadId 

SystemThread::Self (void)

{

  return pthread_self ();

}

bool 

SystemThread::Equals (SystemThread::ThreadId id)

{

  return (pthread_equal (pthread_self (), id) != 0);

}

#endif /* HAVE_PTHREAD_H */

} // namespace ns3