A Discrete-Event Network Simulator
API
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watchdog.cc
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1/*
2 * Copyright (c) 2007 INRIA
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
18 */
19#include "watchdog.h"
20
21#include "log.h"
22
29namespace ns3
30{
31
32NS_LOG_COMPONENT_DEFINE("Watchdog");
33
35 : m_impl(nullptr),
36 m_event(),
37 m_end(MicroSeconds(0))
38{
40}
41
43{
44 NS_LOG_FUNCTION(this);
46 delete m_impl;
47}
48
49void
51{
52 NS_LOG_FUNCTION(this << delay);
53 Time end = Simulator::Now() + delay;
54 m_end = std::max(m_end, end);
55 if (m_event.IsRunning())
56 {
57 return;
58 }
60}
61
62void
64{
65 NS_LOG_FUNCTION(this);
66 if (m_end == Simulator::Now())
67 {
68 m_impl->Invoke();
69 }
70 else
71 {
73 }
74}
75
76} // namespace ns3
void Cancel()
This method is syntactic sugar for the ns3::Simulator::Cancel method.
Definition: event-id.cc:55
bool IsRunning() const
This method is syntactic sugar for !IsExpired().
Definition: event-id.cc:76
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
Definition: simulator.h:568
static Time Now()
Return the current simulation virtual time.
Definition: simulator.cc:199
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:105
virtual void Invoke()=0
Invoke the expire function.
void Expire()
Internal callback invoked when the timer expires.
Definition: watchdog.cc:63
EventId m_event
The future event scheduled to expire the timer.
Definition: watchdog.h:120
~Watchdog()
Destructor.
Definition: watchdog.cc:42
Watchdog()
Constructor.
Definition: watchdog.cc:34
void Ping(Time delay)
Delay the timer.
Definition: watchdog.cc:50
TimerImpl * m_impl
The timer implementation, which contains the bound callback function and arguments.
Definition: watchdog.h:118
Time m_end
The absolute time when the timer will expire.
Definition: watchdog.h:122
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
#define NS_LOG_FUNCTION_NOARGS()
Output the name of the function.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
Time Now()
create an ns3::Time instance which contains the current simulation time.
Definition: simulator.cc:296
Time MicroSeconds(uint64_t value)
Construct a Time in the indicated unit.
Definition: nstime.h:1360
Debug message logging.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
ns3::Watchdog timer class declaration.