/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2007 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@sophia.inria.fr>
*/
#include "watchdog.h"
namespace ns3 {
Watchdog::Watchdog ()
: m_impl (0),
m_event (),
m_end (MicroSeconds (0))
{}
Watchdog::~Watchdog ()
{
delete m_impl;
}
void
Watchdog::Ping (Time delay)
{
Time end = Simulator::Now () + delay;
m_end = std::max (m_end, end);
if (m_event.IsRunning ())
{
return;
}
m_event = Simulator::Schedule (m_end - Now (), &Watchdog::Expire, this);
}
void
Watchdog::Expire (void)
{
if (m_end == Simulator::Now ())
{
m_impl->Invoke ();
}
else
{
m_event = Simulator::Schedule (m_end - Now (), &Watchdog::Expire, this);
}
}
} // namespace ns3
#ifdef RUN_SELF_TESTS
#include "ns3/test.h"
namespace ns3 {
class WatchdogTests : public Test
{
public:
WatchdogTests ();
virtual bool RunTests (void);
private:
void Expire (Time expected);
bool m_error;
};
WatchdogTests::WatchdogTests ()
: Test ("Watchdog")
{}
void
WatchdogTests::Expire (Time expected)
{
bool result = true;
NS_TEST_ASSERT_EQUAL (Simulator::Now (), expected);
m_error = !result;
}
bool
WatchdogTests::RunTests (void)
{
bool result = true;
m_error = false;
Watchdog watchdog;
watchdog.SetFunction (&WatchdogTests::Expire, this);
watchdog.SetArguments (MicroSeconds (40));
watchdog.Ping (MicroSeconds (10));
Simulator::Schedule (MicroSeconds (5), &Watchdog::Ping, &watchdog, MicroSeconds (20));
Simulator::Schedule (MicroSeconds (20), &Watchdog::Ping, &watchdog, MicroSeconds (2));
Simulator::Schedule (MicroSeconds (23), &Watchdog::Ping, &watchdog, MicroSeconds (17));
Simulator::Run ();
NS_TEST_ASSERT (!m_error);
Simulator::Destroy ();
return result;
}
static WatchdogTests g_watchdogTests;
} // namespace ns3
#endif /* RUN_SELF_TESTS */