cxxtools::Singleton

Singleton Class Template Reference

#include <cxxtools/singleton.h>

List of all members.

Public Types

typedef A Allocator

Static Public Member Functions

static T & instance ()

Returns the instance of the singleton type.

Protected Member Functions

Singleton ()

Contructor.

~Singleton ()

Destructor.

Detailed Description

template<typename T, typename A = std::allocator<T>>
class cxxtools::Singleton< T, A >

Parameters:

	T	Type of the singleton
	A	Allocator for type T

The Singleton class template can be used to easily implement the Singleton design pattern. It can either be used directly or as a base class. An allocator can be used to control how the singleton instance will be allocated.

The follwing example shows how to use the singleton as a base class:

              class MySingleton : public Singleton<MySingleton>
              {
                   friend class Singleton<MySingleton>;

                   // ...
               };

Member Function Documentation

static T& instance ( ) [static]

When called for the first time, the singleton instance will be created with the specified alloctaor. All subsequent calls wikk return a reference to the previously created instance.

Returns:: The singleton instance


Public Types
typedef A	Allocator
Static Public Member Functions
static T &	instance ()
	Returns the instance of the singleton type.
Protected Member Functions
	Singleton ()
	Contructor.
	~Singleton ()
	Destructor.

Singleton Class Template Reference

Public Types

Static Public Member Functions

Protected Member Functions

Detailed Description

template<typename T, typename A = std::allocator<T>> class cxxtools::Singleton< T, A >

Member Function Documentation

template<typename T, typename A = std::allocator<T>>
class cxxtools::Singleton< T, A >