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00001 /************************************************************************/ 00002 /* */ 00003 /* Copyright 2002-2003 by Ullrich Koethe, Hans Meine */ 00004 /* */ 00005 /* This file is part of the VIGRA computer vision library. */ 00006 /* The VIGRA Website is */ 00007 /* http://hci.iwr.uni-heidelberg.de/vigra/ */ 00008 /* Please direct questions, bug reports, and contributions to */ 00009 /* ullrich.koethe@iwr.uni-heidelberg.de or */ 00010 /* vigra@informatik.uni-hamburg.de */ 00011 /* */ 00012 /* Permission is hereby granted, free of charge, to any person */ 00013 /* obtaining a copy of this software and associated documentation */ 00014 /* files (the "Software"), to deal in the Software without */ 00015 /* restriction, including without limitation the rights to use, */ 00016 /* copy, modify, merge, publish, distribute, sublicense, and/or */ 00017 /* sell copies of the Software, and to permit persons to whom the */ 00018 /* Software is furnished to do so, subject to the following */ 00019 /* conditions: */ 00020 /* */ 00021 /* The above copyright notice and this permission notice shall be */ 00022 /* included in all copies or substantial portions of the */ 00023 /* Software. */ 00024 /* */ 00025 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND */ 00026 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES */ 00027 /* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND */ 00028 /* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT */ 00029 /* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, */ 00030 /* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING */ 00031 /* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR */ 00032 /* OTHER DEALINGS IN THE SOFTWARE. */ 00033 /* */ 00034 /************************************************************************/ 00035 00036 #ifndef VIGRA_MEMORY_HXX 00037 #define VIGRA_MEMORY_HXX 00038 00039 #include "metaprogramming.hxx" 00040 00041 namespace vigra { 00042 00043 enum SkipInitializationTag { SkipInitialization}; 00044 00045 template<class T> 00046 struct CanSkipInitialization 00047 { 00048 typedef typename TypeTraits<T>::isBuiltinType type; 00049 static const bool value = type::asBool; 00050 }; 00051 00052 namespace detail { 00053 00054 template <class T> 00055 inline void destroy_n(T * /* p */, std::ptrdiff_t /* n */, VigraTrueType /* isPOD */) 00056 { 00057 } 00058 00059 template <class T> 00060 inline void destroy_n(T * p, std::ptrdiff_t n, VigraFalseType /* isPOD */) 00061 { 00062 T * end = p + n; 00063 for(; p != end; ++p) 00064 p->~T(); 00065 } 00066 00067 template <class T> 00068 inline void destroy_n(T * p, std::ptrdiff_t n) 00069 { 00070 destroy_n(p, n, typename TypeTraits<T>::isPOD()); 00071 } 00072 00073 /********************************************************************/ 00074 00075 // g++ 2.95 has std::destroy() in the STL 00076 #if !defined(__GNUC__) || __GNUC__ >= 3 00077 00078 template <class T> 00079 inline void destroy(T * p, VigraTrueType /* isPOD */) 00080 { 00081 } 00082 00083 template <class T> 00084 inline void destroy(T * p, VigraFalseType /* isPOD */) 00085 { 00086 p->~T(); 00087 } 00088 00089 template <class T> 00090 inline void destroy(T * p) 00091 { 00092 destroy(p, typename TypeTraits<T>::isPOD()); 00093 } 00094 00095 #else 00096 00097 } } // namespace vigra::detail 00098 00099 #include <memory> 00100 00101 namespace vigra { namespace detail { 00102 00103 using std::destroy; 00104 00105 #endif 00106 00107 } } // namespace vigra::detail 00108 00109 #endif // VIGRA_MEMORY_HXX
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