A Discrete-Event Network Simulator
API
watchdog.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2007 INRIA
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 #include "watchdog.h"
21 #include "log.h"
22 
23 
30 namespace ns3 {
31 
32 NS_LOG_COMPONENT_DEFINE ("Watchdog");
33 
35  : m_impl (0),
36  m_event (),
37  m_end (MicroSeconds (0))
38 {
40 }
41 
43 {
44  NS_LOG_FUNCTION (this);
45  delete m_impl;
46 }
47 
48 void
50 {
51  NS_LOG_FUNCTION (this << delay);
52  Time end = Simulator::Now () + delay;
53  m_end = std::max (m_end, end);
54  if (m_event.IsRunning ())
55  {
56  return;
57  }
59 }
60 
61 void
63 {
64  NS_LOG_FUNCTION (this);
65  if (m_end == Simulator::Now ())
66  {
67  m_impl->Invoke ();
68  }
69  else
70  {
72  }
73 }
74 
75 } // namespace ns3
76 
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:102
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by "...
Time m_end
The absolute time when the timer will expire.
Definition: watchdog.h:182
void Ping(Time delay)
Delay the timer.
Definition: watchdog.cc:49
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
EventId m_event
The future event scheduled to expire the timer.
Definition: watchdog.h:180
#define NS_LOG_FUNCTION_NOARGS()
Output the name of the function.
ns3::Watchdog timer class declaration.
static EventId Schedule(Time const &delay, MEM mem_ptr, OBJ obj)
Schedule an event to expire after delay.
Definition: simulator.h:1381
#define max(a, b)
Definition: 80211b.c:43
Watchdog()
Constructor.
Definition: watchdog.cc:34
Every class exported by the ns3 library is enclosed in the ns3 namespace.
~Watchdog()
Destructor.
Definition: watchdog.cc:42
static Time Now(void)
Return the current simulation virtual time.
Definition: simulator.cc:249
TimerImpl * m_impl
The timer implementation, which contains the bound callback function and arguments.
Definition: watchdog.h:178
bool IsRunning(void) const
This method is syntactic sugar for !IsExpired().
Definition: event-id.cc:65
virtual void Invoke(void)=0
Invoke the expire function.
Time MicroSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition: nstime.h:1030
Time Now(void)
create an ns3::Time instance which contains the current simulation time.
Definition: simulator.cc:365
Debug message logging.
void Expire(void)
Internal callback invoked when the timer expires.
Definition: watchdog.cc:62