ns3::Singleton< T > Class Template Reference

A template singleton. More...

#include "singleton.h"

Inheritance diagram for ns3::Singleton< T >:

Public Member Functions
	Singleton (const Singleton< T > &)=delete
Singleton &	operator= (const Singleton< T > &)=delete

Static Public Member Functions
static T *	Get ()
	Get a pointer to the singleton instance. More...

Protected Member Functions
	Singleton ()
	Constructor. More...
virtual	~Singleton ()
	Destructor. More...

Detailed Description

template<typename T>
class ns3::Singleton< T >

A template singleton.

This template class can be used to implement the singleton pattern. The underlying object will be destroyed automatically when the process exits.

For a singleton whose lifetime is bounded by the simulation run, not the process, see SimulationSingleton.

To force your class ExampleS to be a singleton, inherit from Singleton:

class ExampleS : public Singleton<ExampleS> { ... };

Then, to reach the singleton instance, just do

ExampleS::Get ()->...;

Note

If you call Get() again after the object has been destroyed, the object will be re-created which will result in a memory leak as reported by most memory leak checkers. It is up to the user to ensure that Get() is never called from a static variable finalizer.

Definition at line 60 of file singleton.h.

Constructor & Destructor Documentation

Singleton() [1/2]

template<typename T >

ns3::Singleton< T >::Singleton ( const Singleton< T > &  )

delete

Singleton() [2/2]

template<typename T >

ns3::Singleton< T >::Singleton ( )

inlineprotected

Constructor.

Definition at line 79 of file singleton.h.

~Singleton()

template<typename T >

virtual ns3::Singleton< T >::~Singleton ( )

inlineprotectedvirtual

Destructor.

Definition at line 84 of file singleton.h.

Member Function Documentation

Get()

template<typename T >

T * ns3::Singleton< T >::Get

static

Get a pointer to the singleton instance.

The instance will be automatically deleted when the process exits.

Returns

A pointer to the singleton instance.

Definition at line 100 of file singleton.h.

operator=()

template<typename T >

Singleton& ns3::Singleton< T >::operator= ( const Singleton< T > &  )

delete

---

The documentation for this class was generated from the following file:

• src/core/model/singleton.h