NS3 -- 使用trace

#include 
#include 

#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/applications-module.h"
#include "ns3/csma-module.h"

using namespace std;
using namespace ns3;


NS_LOG_COMPONENT_DEFINE("trace");

class MyObject : public Object
{
public:
	static TypeId GetTypeId(void)
	{
		static TypeId tid = TypeId("MyObject")
		.SetParent(Object::GetTypeId())
		.AddConstructor()
		.AddTraceSource("MyInteger", "an intefer value to trace",
		MakeTraceSourceAccessor(&MyObject::m_myInt));  //使用AddTraceSource加入
		return tid;
	}

	MyObject () {}
	TracedValue m_myInt; //定义要跟踪的变量
};

void IntTrace(int32_t oldValue, int32_t newValue)	//回调函数
{
	std::cout << "old:" << oldValue << "\tnew:" << newValue << std::endl;
}

int main(int argc, char *argv[])
{
	Ptr myObject = CreateObject();
	myObject->TraceConnectWithoutContext("MyInteger", MakeCallback(&IntTrace)); //关联跟踪变量和回调函数

	myObject->m_myInt = 1; //变量变化时会自动调用回调函数
	myObject->m_myInt = 2;

	Simulator::Run();
	Simulator::Destroy();

	return 0;
}