The Pedigree Project  0.1
Singleton.h
1 /*
2  * Copyright (c) 2008-2014, Pedigree Developers
3  *
4  * Please see the CONTRIB file in the root of the source tree for a full
5  * list of contributors.
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #ifndef KERNEL_SINGLETON_H
21 #define KERNEL_SINGLETON_H
22 
23 template <class T>
24 class Singleton
25 {
26  public:
27  static T &instance()
28  {
29  static T m_Instance;
30  return m_Instance;
31  }
32 
33  protected:
34  Singleton()
35  {
36  }
37  ~Singleton()
38  {
39  }
40 
41  private:
42  Singleton(const Singleton &);
43  Singleton &operator=(const Singleton &);
44 };
45 
46 #endif