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/ 6 7 Copyright (c) 2000-2013 Torus Knot Software Ltd 8 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 11 in the Software without restriction, including without limitation the rights 12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 13 copies of the Software, and to permit persons to whom the Software is 14 furnished to do so, subject to the following conditions: 15 16 The above copyright notice and this permission notice shall be included in 17 all copies or substantial portions of the Software. 18 19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 25 THE SOFTWARE. 26 ----------------------------------------------------------------------------- 27 */ 28 #ifndef __AtomicObject_H__ 29 #define __AtomicObject_H__ 30 31 #include <signal.h> 32 #include "OgrePrerequisites.h" 33 #include "Threading/OgreThreadHeaders.h" 34 35 namespace Ogre { 36 37 /** \addtogroup Core 38 * @{ 39 */ 40 /** \addtogroup General 41 * @{ 42 */ 43 template <class T> class AtomicObject { 44 45 public: 46 AtomicObject(const T & initial)47 AtomicObject (const T &initial) 48 : mField(initial) 49 { } 50 AtomicObject(const AtomicObject<T> & cousin)51 AtomicObject (const AtomicObject<T> &cousin) 52 : mField(cousin.get()) 53 { } 54 AtomicObject()55 AtomicObject () 56 { } 57 58 void operator= (const AtomicObject<T> &cousin) 59 { 60 set(cousin.get()); 61 } 62 get(void)63 T get (void) const 64 { 65 OGRE_LOCK_AUTO_MUTEX; 66 return mField; 67 } 68 set(const T & v)69 void set (const T &v) 70 { 71 OGRE_LOCK_AUTO_MUTEX; 72 mField = v; 73 } 74 cas(const T & old,const T & nu)75 bool cas (const T &old, const T &nu) 76 { 77 OGRE_LOCK_AUTO_MUTEX; 78 if (mField != old) return false; 79 mField = nu; 80 return true; 81 } 82 83 T operator++ (void) 84 { 85 OGRE_LOCK_AUTO_MUTEX; 86 return ++mField; 87 } 88 89 T operator++ (int) 90 { 91 OGRE_LOCK_AUTO_MUTEX; 92 return mField++; 93 } 94 95 T operator-- (int) 96 { 97 OGRE_LOCK_AUTO_MUTEX; 98 return mField--; 99 } 100 101 T operator+=(const T &add) 102 { 103 OGRE_LOCK_AUTO_MUTEX; 104 mField += add; 105 return mField; 106 } 107 108 T operator-=(const T &sub) 109 { 110 OGRE_LOCK_AUTO_MUTEX; 111 mField -= sub; 112 return mField; 113 } 114 115 protected: 116 117 OGRE_AUTO_MUTEX; 118 119 volatile T mField; 120 121 }; 122 /** @} */ 123 /** @} */ 124 125 } 126 127 #endif 128 129