FIFE  6e1afdbeda11afe9ac53e6023a4be96ef88f1dc6
singleton.h
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21 
22 #ifndef FIFE_SINGLETON_H
23 #define FIFE_SINGLETON_H
24 
25 #define SINGLEFRIEND(classname) friend class FIFE::StaticSingleton<classname>; classname(); virtual ~classname();
26 
27 // Standard C++ library includes
28 #include <cassert>
29 
30 // 3rd party library includes
31 
32 // FIFE includes
33 // These includes are split up in two parts, separated by one empty line
34 // First block: files included from the FIFE root src directory
35 // Second block: files included from the same folder
36 #include "fifeclass.h"
37 
38 namespace FIFE {
39 
44  template <typename T> class StaticSingleton {
45  public:
46 
47  static T* instance() {
48  static T inst;
49  return &inst;
50  }
51 
52  protected:
53 
55  }
56 
57  virtual ~StaticSingleton() {
58  }
59 
60  private:
63  return this;
64  }
65 
66  };
67 
82  template <typename T> class DynamicSingleton {
83  public:
84  static T* instance() {
85  assert(m_instance);
86  return m_instance;
87  }
88 
90  assert(!m_instance);
91  m_instance = static_cast<T*>(this);
92  }
93 
94  virtual ~DynamicSingleton() {
95  m_instance = 0;
96  }
97 
98  private:
99  static T* m_instance;
100 
103 
104  };
105 
106  template <typename T> T* DynamicSingleton<T>::m_instance = 0;
107 
108 }//FIFE
109 
110 #endif
virtual ~DynamicSingleton()
Definition: singleton.h:94
virtual ~StaticSingleton()
Definition: singleton.h:57
static T * m_instance
Definition: singleton.h:99
static T * instance()
Definition: singleton.h:84
DynamicSingleton(const DynamicSingleton< T > &)
Definition: singleton.h:101
Another Singleton.
Definition: singleton.h:82
StaticSingleton< T > & operator=(const StaticSingleton< T > &)
Definition: singleton.h:62
static T * instance()
Definition: singleton.h:47
The "classic" Singleton.
Definition: singleton.h:44
StaticSingleton(const StaticSingleton< T > &)
Definition: singleton.h:61
DynamicSingleton< T & > operator=(const DynamicSingleton< T > &)
Definition: singleton.h:102