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Object-Oriented Graphics Rendering Engine
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OgreAtomicObject.h
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1 /*
2 -----------------------------------------------------------------------------
3 This source file is part of OGRE
4  (Object-oriented Graphics Rendering Engine)
5 For the latest info, see http://www.ogre3d.org/
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7 Copyright (c) 2000-2014 Torus Knot Software Ltd
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9 Permission is hereby granted, free of charge, to any person obtaining a copy
10 of this software and associated documentation files (the "Software"), to deal
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27 */
28 #ifndef __AtomicObject_H__
29 #define __AtomicObject_H__
30 
31 #include <signal.h>
32 #include "OgrePrerequisites.h"
34 
35 namespace Ogre {
36 
43  template <class T> class AtomicObject {
44 
45  public:
46 
47  AtomicObject (const T &initial)
48  : mField(initial)
49  { }
50 
51  AtomicObject (const AtomicObject<T> &cousin)
52  : mField(cousin.get())
53  { }
54 
56  { }
57 
58  void operator= (const AtomicObject<T> &cousin)
59  {
60  set(cousin.get());
61  }
62 
63  T get (void) const
64  {
66  return mField;
67  }
68 
69  void set (const T &v)
70  {
72  mField = v;
73  }
74 
75  bool cas (const T &old, const T &nu)
76  {
78  if (mField != old) return false;
79  mField = nu;
80  return true;
81  }
82 
83  T operator++ (void)
84  {
86  return ++mField;
87  }
88 
89  T operator++ (int)
90  {
92  return mField++;
93  }
94 
95  T operator-- (int)
96  {
98  return mField--;
99  }
100 
101  T operator+=(const T &add)
102  {
104  mField += add;
105  return mField;
106  }
107 
108  T operator-=(const T &sub)
109  {
111  mField -= sub;
112  return mField;
113  }
114 
115  protected:
116 
118 
119  volatile T mField;
120 
121  };
125 }
126 
127 #endif
128 
T operator-=(const T &sub)
AtomicObject(const T &initial)
void operator=(const AtomicObject< T > &cousin)
AtomicObject(const AtomicObject< T > &cousin)
T get(void) const
#define OGRE_LOCK_AUTO_MUTEX
bool cas(const T &old, const T &nu)
T operator+=(const T &add)
void set(const T &v)