projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | ////////////////////////////////////////////////////////////////////////////// |
| 2 | // (C) Copyright John Maddock 2000. | |
| 3 | // (C) Copyright Ion Gaztanaga 2005-2012. | |
| 4 | // | |
| 5 | // Distributed under the Boost Software License, Version 1.0. | |
| 6 | // (See accompanying file LICENSE_1_0.txt or copy at | |
| 7 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | // | |
| 9 | // See http://www.boost.org/libs/interprocess for documentation. | |
| 10 | // | |
| 11 | ////////////////////////////////////////////////////////////////////////////// | |
| 12 | ||
| 13 | #ifndef BOOST_INTERPROCESS_DETAIL_TYPE_TRAITS_HPP | |
| 14 | #define BOOST_INTERPROCESS_DETAIL_TYPE_TRAITS_HPP | |
| 15 | ||
| 16 | #ifndef BOOST_CONFIG_HPP | |
| 17 | # include <boost/config.hpp> | |
| 18 | #endif | |
| 19 | # | |
| 20 | #if defined(BOOST_HAS_PRAGMA_ONCE) | |
| 21 | # pragma once | |
| 22 | #endif | |
| 23 | ||
| 24 | #include <boost/interprocess/detail/config_begin.hpp> | |
| 25 | ||
| 26 | namespace boost { | |
| 27 | namespace interprocess { | |
| 28 | namespace ipcdetail { | |
| 29 | ||
| 30 | struct nat{}; | |
| 31 | ||
| 32 | template<class T> | |
| 33 | struct remove_reference | |
| 34 | { | |
| 35 | typedef T type; | |
| 36 | }; | |
| 37 | ||
| 38 | template<class T> | |
| 39 | struct remove_reference<T&> | |
| 40 | { | |
| 41 | typedef T type; | |
| 42 | }; | |
| 43 | ||
| 44 | template<class T> | |
| 45 | struct is_reference | |
| 46 | { | |
| 47 | static const bool value = false; | |
| 48 | }; | |
| 49 | ||
| 50 | template<class T> | |
| 51 | struct is_reference<T&> | |
| 52 | { | |
| 53 | static const bool value = true; | |
| 54 | }; | |
| 55 | ||
| 56 | template<class T> | |
| 57 | struct is_pointer | |
| 58 | { | |
| 59 | static const bool value = false; | |
| 60 | }; | |
| 61 | ||
| 62 | template<class T> | |
| 63 | struct is_pointer<T*> | |
| 64 | { | |
| 65 | static const bool value = true; | |
| 66 | }; | |
| 67 | ||
| 68 | template <typename T> | |
| 69 | struct add_reference | |
| 70 | { | |
| 71 | typedef T& type; | |
| 72 | }; | |
| 73 | ||
| 74 | template<class T> | |
| 75 | struct add_reference<T&> | |
| 76 | { | |
| 77 | typedef T& type; | |
| 78 | }; | |
| 79 | ||
| 80 | template<> | |
| 81 | struct add_reference<void> | |
| 82 | { | |
| 83 | typedef nat &type; | |
| 84 | }; | |
| 85 | ||
| 86 | template<> | |
| 87 | struct add_reference<const void> | |
| 88 | { | |
| 89 | typedef const nat &type; | |
| 90 | }; | |
| 91 | ||
| 92 | template <class T> | |
| 93 | struct add_const_reference | |
| 94 | { typedef const T &type; }; | |
| 95 | ||
| 96 | template <class T> | |
| 97 | struct add_const_reference<T&> | |
| 98 | { typedef T& type; }; | |
| 99 | ||
| 100 | template<class T> | |
| 101 | struct remove_const | |
| 102 | { | |
| 103 | typedef T type; | |
| 104 | }; | |
| 105 | ||
| 106 | template<class T> | |
| 107 | struct remove_const<const T> | |
| 108 | { | |
| 109 | typedef T type; | |
| 110 | }; | |
| 111 | ||
| 112 | template<class T> | |
| 113 | struct remove_volatile | |
| 114 | { | |
| 115 | typedef T type; | |
| 116 | }; | |
| 117 | ||
| 118 | template<class T> | |
| 119 | struct remove_volatile<volatile T> | |
| 120 | { | |
| 121 | typedef T type; | |
| 122 | }; | |
| 123 | ||
| 124 | template<class T> | |
| 125 | struct remove_const_volatile | |
| 126 | { | |
| 127 | typedef typename remove_const<typename remove_volatile<T>::type>::type type; | |
| 128 | }; | |
| 129 | ||
| 130 | template <typename T, typename U> | |
| 131 | struct is_same | |
| 132 | { | |
| 133 | typedef char yes_type; | |
| 134 | struct no_type | |
| 135 | { | |
| 136 | char padding[8]; | |
| 137 | }; | |
| 138 | ||
| 139 | template <typename V> | |
| 140 | static yes_type is_same_tester(V*, V*); | |
| 141 | static no_type is_same_tester(...); | |
| 142 | ||
| 143 | static T *t; | |
| 144 | static U *u; | |
| 145 | ||
| 146 | static const bool value = sizeof(yes_type) == sizeof(is_same_tester(t,u)); | |
| 147 | }; | |
| 148 | ||
| 149 | template<class T, class U> | |
| 150 | struct is_cv_same | |
| 151 | { | |
| 152 | static const bool value = is_same< typename remove_const_volatile<T>::type | |
| 153 | , typename remove_const_volatile<U>::type >::value; | |
| 154 | }; | |
| 155 | ||
| 156 | } // namespace ipcdetail | |
| 157 | } //namespace interprocess { | |
| 158 | } //namespace boost { | |
| 159 | ||
| 160 | #include <boost/interprocess/detail/config_end.hpp> | |
| 161 | ||
| 162 | #endif //#ifndef BOOST_INTERPROCESS_DETAIL_TYPE_TRAITS_HPP |