A Discrete-Event Network Simulator
API
fourth.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * This program is free software; you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License version 2 as
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9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
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13  * along with this program; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15  */
16 
17 #include "ns3/object.h"
18 #include "ns3/uinteger.h"
19 #include "ns3/traced-value.h"
20 #include "ns3/trace-source-accessor.h"
21 
22 #include <iostream>
23 
24 using namespace ns3;
25 
26 class MyObject : public Object
27 {
28 public:
33  static TypeId GetTypeId (void)
34  {
35  static TypeId tid = TypeId ("MyObject")
36  .SetParent<Object> ()
37  .SetGroupName ("Tutorial")
38  .AddConstructor<MyObject> ()
39  .AddTraceSource ("MyInteger",
40  "An integer value to trace.",
42  "ns3::TracedValueCallback::Int32")
43  ;
44  return tid;
45  }
46 
47  MyObject () {}
49 };
50 
51 void
52 IntTrace (int32_t oldValue, int32_t newValue)
53 {
54  std::cout << "Traced " << oldValue << " to " << newValue << std::endl;
55 }
56 
57 int
58 main (int argc, char *argv[])
59 {
60  Ptr<MyObject> myObject = CreateObject<MyObject> ();
61  myObject->TraceConnectWithoutContext ("MyInteger", MakeCallback (&IntTrace));
62 
63  myObject->m_myInt = 1234;
64 }
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:73
TracedValue< int32_t > m_myInt
Definition: fourth.cc:48
Ptr< const TraceSourceAccessor > MakeTraceSourceAccessor(T a)
Create a TraceSourceAccessor which will control access to the underlying trace source.
static TypeId GetTypeId(void)
Register this type.
Definition: fourth.cc:33
bool TraceConnectWithoutContext(std::string name, const CallbackBase &cb)
Connect a TraceSource to a Callback without a context.
Definition: object-base.cc:293
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void IntTrace(int32_t oldValue, int32_t newValue)
Definition: fourth.cc:52
MyObject()
Definition: fourth.cc:47
A base class which provides memory management and object aggregation.
Definition: object.h:87
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:923
Callback< R, Ts... > MakeCallback(R(T::*memPtr)(Ts...), OBJ objPtr)
Build Callbacks for class method members which take varying numbers of arguments and potentially retu...
Definition: callback.h:1642