1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright : (C) 2008 by Eran Ifrah
// file name : singleton.h
//
// -------------------------------------------------------------------------
// A
// _____ _ _ _ _
// / __ \ | | | | (_) |
// | / \/ ___ __| | ___| | _| |_ ___
// | | / _ \ / _ |/ _ \ | | | __/ _ )
// | \__/\ (_) | (_| | __/ |___| | || __/
// \____/\___/ \__,_|\___\_____/_|\__\___|
//
// F i l e
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#ifndef SINGLETON_H
#define SINGLETON_H
/**
* A template class that implements the Singleton pattern.
*
* \date 08-23-2006
* \author eran
*/
template <class T> class Singleton
{
static T* ms_instance;
public:
/**
* Static method to access the only pointer of this instance.
* \return a pointer to the only instance of this
*/
static T* Get();
/**
* Release resources.
*/
static void Free();
protected:
/**
* Default constructor.
*/
Singleton();
/**
* Destructor.
*/
virtual ~Singleton();
};
template <class T> T* Singleton<T>::ms_instance = 0;
template <class T> Singleton<T>::Singleton()
{
}
template <class T> Singleton<T>::~Singleton()
{
}
template <class T> T* Singleton<T>::Get()
{
if(!ms_instance)
ms_instance = new T();
return ms_instance;
}
template <class T> void Singleton<T>::Free()
{
if( ms_instance )
{
delete ms_instance;
ms_instance = 0;
}
}
#endif // SINGLETON_H
|
