00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 Class 00025 Foam::refCount 00026 00027 Description 00028 Reference counter for tmp<field>. 00029 00030 \*---------------------------------------------------------------------------*/ 00031 00032 #ifndef refCount_H 00033 #define refCount_H 00034 00035 #include <OpenFOAM/bool.H> 00036 00037 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00038 00039 namespace Foam 00040 { 00041 00042 /*---------------------------------------------------------------------------*\ 00043 Class refCount Declaration 00044 \*---------------------------------------------------------------------------*/ 00045 00046 class refCount 00047 { 00048 // Private data 00049 00050 int count_; 00051 00052 // Private member functions 00053 00054 //- Dissallow copy 00055 refCount(const refCount&); 00056 00057 //- Dissallow bitwise assignment 00058 void operator=(const refCount&); 00059 00060 00061 public: 00062 00063 // Constructors 00064 00065 //- Construct null with zero count 00066 refCount() 00067 : 00068 count_(0) 00069 {} 00070 00071 00072 // Member Functions 00073 00074 //- Return the reference count 00075 int count() const 00076 { 00077 return count_; 00078 } 00079 00080 00081 //- Return true if the reference count is zero 00082 bool okToDelete() const 00083 { 00084 return !count_; 00085 } 00086 00087 00088 //- Reset the reference count to zero 00089 void resetRefCount() 00090 { 00091 count_ = 0; 00092 } 00093 00094 00095 // Member Operators 00096 00097 //- Increment the reference count 00098 void operator++() 00099 { 00100 count_++; 00101 } 00102 00103 //- Increment the reference count 00104 void operator++(int) 00105 { 00106 count_++; 00107 } 00108 00109 //- Decrement the reference count 00110 void operator--() 00111 { 00112 count_--; 00113 } 00114 00115 //- Decrement the reference count 00116 void operator--(int) 00117 { 00118 count_--; 00119 } 00120 }; 00121 00122 00123 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00124 00125 } // End namespace Foam 00126 00127 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00128 00129 #endif 00130 00131 // ************************ vim: set sw=4 sts=4 et: ************************ //