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1 | /* |
2 | * Copyright (c) 2012-2014 Glen Joseph Fernandes | |
3 | * glenfe at live dot com | |
4 | * | |
5 | * Distributed under the Boost Software License, | |
6 | * Version 1.0. (See accompanying file LICENSE_1_0.txt | |
7 | * or copy at http://boost.org/LICENSE_1_0.txt) | |
8 | */ | |
9 | #ifndef BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP | |
10 | #define BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP | |
11 | ||
12 | #include <boost/smart_ptr/detail/array_count_impl.hpp> | |
13 | #include <boost/smart_ptr/detail/sp_if_array.hpp> | |
14 | ||
15 | namespace boost { | |
16 | template<class T, class A> | |
17 | inline typename boost::detail::sp_if_array<T>::type | |
18 | allocate_shared(const A& allocator, std::size_t size) { | |
19 | typedef typename boost::detail::array_inner<T>::type T1; | |
20 | typedef typename boost::detail::array_base<T1>::type T2; | |
21 | typedef boost::detail::ms_init_tag R1; | |
22 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
23 | typedef boost::detail::ms_in_allocator_tag D1; | |
24 | std::size_t n1 = size * boost::detail::array_total<T1>::size; | |
25 | T1* p1 = 0; | |
26 | T2* p2 = 0; | |
27 | D1 d1; | |
28 | A1 a1(allocator, size, &p2); | |
29 | shared_ptr<T> s1(p1, d1, a1); | |
30 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
31 | a2->set(0); | |
32 | #if !defined(BOOST_NO_CXX11_ALLOCATOR) | |
33 | boost::detail::as_init(allocator, p2, n1); | |
34 | #else | |
35 | boost::detail::ms_init(p2, n1); | |
36 | #endif | |
37 | a2->set(p2); | |
38 | p1 = reinterpret_cast<T1*>(p2); | |
39 | return shared_ptr<T>(s1, p1); | |
40 | } | |
41 | ||
42 | template<class T, class A> | |
43 | inline typename boost::detail::sp_if_size_array<T>::type | |
44 | allocate_shared(const A& allocator) { | |
45 | typedef typename boost::detail::array_inner<T>::type T1; | |
46 | typedef typename boost::detail::array_base<T1>::type T2; | |
47 | typedef boost::detail::ms_init_tag R1; | |
48 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
49 | typedef boost::detail::ms_in_allocator_tag D1; | |
50 | enum { | |
51 | N = boost::detail::array_total<T>::size | |
52 | }; | |
53 | T1* p1 = 0; | |
54 | T2* p2 = 0; | |
55 | D1 d1; | |
56 | A1 a1(allocator, &p2); | |
57 | shared_ptr<T> s1(p1, d1, a1); | |
58 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
59 | a2->set(0); | |
60 | #if !defined(BOOST_NO_CXX11_ALLOCATOR) | |
61 | boost::detail::as_init(allocator, p2, N); | |
62 | #else | |
63 | boost::detail::ms_init(p2, N); | |
64 | #endif | |
65 | a2->set(p2); | |
66 | p1 = reinterpret_cast<T1*>(p2); | |
67 | return shared_ptr<T>(s1, p1); | |
68 | } | |
69 | ||
70 | template<class T, class A> | |
71 | inline typename boost::detail::sp_if_array<T>::type | |
72 | allocate_shared(const A& allocator, std::size_t size, | |
73 | const typename boost::detail::array_inner<T>::type& value) { | |
74 | typedef typename boost::detail::array_inner<T>::type T1; | |
75 | typedef typename boost::detail::array_base<T1>::type T2; | |
76 | typedef const T2 T3; | |
77 | typedef boost::detail::ms_init_tag R1; | |
78 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
79 | typedef boost::detail::ms_in_allocator_tag D1; | |
80 | enum { | |
81 | M = boost::detail::array_total<T1>::size | |
82 | }; | |
83 | std::size_t n1 = M * size; | |
84 | T1* p1 = 0; | |
85 | T2* p2 = 0; | |
86 | T3* p3 = reinterpret_cast<T3*>(&value); | |
87 | D1 d1; | |
88 | A1 a1(allocator, size, &p2); | |
89 | shared_ptr<T> s1(p1, d1, a1); | |
90 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
91 | a2->set(0); | |
92 | #if !defined(BOOST_NO_CXX11_ALLOCATOR) | |
93 | boost::detail::as_init<T2, A, M>(allocator, p2, n1, p3); | |
94 | #else | |
95 | boost::detail::ms_init<T2, M>(p2, n1, p3); | |
96 | #endif | |
97 | a2->set(p2); | |
98 | p1 = reinterpret_cast<T1*>(p2); | |
99 | return shared_ptr<T>(s1, p1); | |
100 | } | |
101 | ||
102 | template<class T, class A> | |
103 | inline typename boost::detail::sp_if_size_array<T>::type | |
104 | allocate_shared(const A& allocator, | |
105 | const typename boost::detail::array_inner<T>::type& value) { | |
106 | typedef typename boost::detail::array_inner<T>::type T1; | |
107 | typedef typename boost::detail::array_base<T1>::type T2; | |
108 | typedef const T2 T3; | |
109 | typedef boost::detail::ms_init_tag R1; | |
110 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
111 | typedef boost::detail::ms_in_allocator_tag D1; | |
112 | enum { | |
113 | N = boost::detail::array_total<T>::size, | |
114 | M = boost::detail::array_total<T1>::size | |
115 | }; | |
116 | T1* p1 = 0; | |
117 | T2* p2 = 0; | |
118 | T3* p3 = reinterpret_cast<T3*>(&value); | |
119 | D1 d1; | |
120 | A1 a1(allocator, &p2); | |
121 | shared_ptr<T> s1(p1, d1, a1); | |
122 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
123 | a2->set(0); | |
124 | #if !defined(BOOST_NO_CXX11_ALLOCATOR) | |
125 | boost::detail::as_init<T2, A, M>(allocator, p2, N, p3); | |
126 | #else | |
127 | boost::detail::ms_init<T2, M>(p2, N, p3); | |
128 | #endif | |
129 | a2->set(p2); | |
130 | p1 = reinterpret_cast<T1*>(p2); | |
131 | return shared_ptr<T>(s1, p1); | |
132 | } | |
133 | ||
134 | template<class T, class A> | |
135 | inline typename boost::detail::sp_if_array<T>::type | |
136 | allocate_shared_noinit(const A& allocator, std::size_t size) { | |
137 | typedef typename boost::detail::array_inner<T>::type T1; | |
138 | typedef typename boost::detail::array_base<T1>::type T2; | |
139 | typedef boost::detail::ms_noinit_tag R1; | |
140 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
141 | typedef boost::detail::ms_in_allocator_tag D1; | |
142 | std::size_t n1 = size * boost::detail::array_total<T1>::size; | |
143 | T1* p1 = 0; | |
144 | T2* p2 = 0; | |
145 | D1 d1; | |
146 | A1 a1(allocator, size, &p2); | |
147 | shared_ptr<T> s1(p1, d1, a1); | |
148 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
149 | a2->set(0); | |
150 | boost::detail::ms_noinit(p2, n1); | |
151 | a2->set(p2); | |
152 | p1 = reinterpret_cast<T1*>(p2); | |
153 | return shared_ptr<T>(s1, p1); | |
154 | } | |
155 | ||
156 | template<class T, class A> | |
157 | inline typename boost::detail::sp_if_size_array<T>::type | |
158 | allocate_shared_noinit(const A& allocator) { | |
159 | typedef typename boost::detail::array_inner<T>::type T1; | |
160 | typedef typename boost::detail::array_base<T1>::type T2; | |
161 | typedef boost::detail::ms_noinit_tag R1; | |
162 | typedef boost::detail::as_allocator<A, T, R1> A1; | |
163 | typedef boost::detail::ms_in_allocator_tag D1; | |
164 | enum { | |
165 | N = boost::detail::array_total<T>::size | |
166 | }; | |
167 | T1* p1 = 0; | |
168 | T2* p2 = 0; | |
169 | D1 d1; | |
170 | A1 a1(allocator, &p2); | |
171 | shared_ptr<T> s1(p1, d1, a1); | |
172 | A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter()); | |
173 | a2->set(0); | |
174 | boost::detail::ms_noinit(p2, N); | |
175 | a2->set(p2); | |
176 | p1 = reinterpret_cast<T1*>(p2); | |
177 | return shared_ptr<T>(s1, p1); | |
178 | } | |
179 | } | |
180 | ||
181 | #endif |