A Discrete-Event Network Simulator
API
sample-simulator.cc
Go to the documentation of this file.
1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2010 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  * Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 
21 #include <iostream>
22 #include "ns3/simulator.h"
23 #include "ns3/nstime.h"
24 #include "ns3/command-line.h"
25 #include "ns3/double.h"
26 #include "ns3/random-variable-stream.h"
27 
35 using namespace ns3;
36 
37 namespace {
38 
40 class MyModel
41 {
42 public:
44  void Start (void);
45 
46 private:
52  void HandleEvent (double eventValue);
53 };
54 
55 void
56 MyModel::Start (void)
57 {
59  &MyModel::HandleEvent,
60  this, Simulator::Now ().GetSeconds ());
61 }
62 void
63 MyModel::HandleEvent (double value)
64 {
65  std::cout << "Member method received event at "
66  << Simulator::Now ().GetSeconds ()
67  << "s started at " << value << "s" << std::endl;
68 }
69 
75 static void
77 {
78  std::cout << "ExampleFunction received event at "
79  << Simulator::Now ().GetSeconds () << "s" << std::endl;
80  model->Start ();
81 }
82 
86 static void
88 {
89  std::cout << "RandomFunction received event at "
90  << Simulator::Now ().GetSeconds () << "s" << std::endl;
91 }
92 
94 static void
96 {
97  std::cout << "I should never be called... " << std::endl;
98 }
99 
100 } // unnamed namespace
101 
102 
103 int main (int argc, char *argv[])
104 {
106  cmd.Parse (argc, argv);
107 
108  MyModel model;
109  Ptr<UniformRandomVariable> v = CreateObject<UniformRandomVariable> ();
110  v->SetAttribute ("Min", DoubleValue (10));
111  v->SetAttribute ("Max", DoubleValue (20));
112 
113  Simulator::Schedule (Seconds (10.0), &ExampleFunction, &model);
114 
116 
118  Simulator::Cancel (id);
119 
120  Simulator::Run ();
121 
123 }
static void CancelledEvent(void)
Simple function event handler; the corresponding event is cancelled.
Simple model object to illustrate event handling.
double GetSeconds(void) const
Get an approximation of the time stored in this instance in the indicated unit.
Definition: nstime.h:361
static void Run(void)
Run the simulation.
Definition: simulator.cc:170
cmd
Definition: second.py:35
static void Cancel(const EventId &id)
Set the cancel bit on this event: the event&#39;s associated function will not be invoked when it expires...
Definition: simulator.cc:290
static EventId Schedule(Time const &delay, MEM mem_ptr, OBJ obj)
Schedule an event to expire after delay.
Definition: simulator.h:1390
void Start(void)
Start model execution by scheduling a HandleEvent.
Parse command-line arguments.
Definition: command-line.h:212
static void Destroy(void)
Execute the events scheduled with ScheduleDestroy().
Definition: simulator.cc:134
Every class exported by the ns3 library is enclosed in the ns3 namespace.
double GetValue(double min, double max)
Get the next random value, as a double in the specified range .
static Time Now(void)
Return the current simulation virtual time.
Definition: simulator.cc:193
An identifier for simulation events.
Definition: event-id.h:53
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1070
This class can be used to hold variables of floating point type such as &#39;double&#39; or &#39;float&#39;...
Definition: double.h:41
static void ExampleFunction(MyModel *model)
Simple function event handler which Starts a MyModel object.
static void RandomFunction(void)
Simple function event handler; this function is called randomly.
void SetAttribute(std::string name, const AttributeValue &value)
Set a single attribute, raising fatal errors if unsuccessful.
Definition: object-base.cc:187