1 | #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED |
3 | |
4 | // MS compatible compilers support #pragma once |
5 | |
6 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
7 | # pragma once |
8 | #endif |
9 | |
10 | // |
11 | // detail/sp_counted_impl.hpp |
12 | // |
13 | // Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd. |
14 | // Copyright 2004-2005 Peter Dimov |
15 | // |
16 | // Distributed under the Boost Software License, Version 1.0. (See |
17 | // accompanying file LICENSE_1_0.txt or copy at |
18 | // http://www.boost.org/LICENSE_1_0.txt) |
19 | // |
20 | |
21 | #if defined(BOOST_SP_USE_STD_ALLOCATOR) && defined(BOOST_SP_USE_QUICK_ALLOCATOR) |
22 | # error BOOST_SP_USE_STD_ALLOCATOR and BOOST_SP_USE_QUICK_ALLOCATOR are incompatible. |
23 | #endif |
24 | |
25 | #include <boost/smart_ptr/detail/sp_counted_base.hpp> |
26 | #include <boost/smart_ptr/detail/sp_noexcept.hpp> |
27 | #include <boost/checked_delete.hpp> |
28 | #include <boost/core/addressof.hpp> |
29 | #include <boost/config.hpp> |
30 | |
31 | #if defined(BOOST_SP_USE_QUICK_ALLOCATOR) |
32 | #include <boost/smart_ptr/detail/quick_allocator.hpp> |
33 | #endif |
34 | |
35 | #include <memory> // std::allocator, std::allocator_traits |
36 | #include <cstddef> // std::size_t |
37 | |
38 | namespace boost |
39 | { |
40 | |
41 | #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) |
42 | |
43 | void sp_scalar_constructor_hook( void * px, std::size_t size, void * pn ); |
44 | void sp_scalar_destructor_hook( void * px, std::size_t size, void * pn ); |
45 | |
46 | #endif |
47 | |
48 | namespace detail |
49 | { |
50 | |
51 | // get_local_deleter |
52 | |
53 | template<class D> class local_sp_deleter; |
54 | |
55 | template<class D> D * get_local_deleter( D * /*p*/ ) BOOST_SP_NOEXCEPT |
56 | { |
57 | return 0; |
58 | } |
59 | |
60 | template<class D> D * get_local_deleter( local_sp_deleter<D> * p ) BOOST_SP_NOEXCEPT; |
61 | |
62 | // |
63 | |
64 | template<class X> class BOOST_SYMBOL_VISIBLE sp_counted_impl_p: public sp_counted_base |
65 | { |
66 | private: |
67 | |
68 | X * px_; |
69 | |
70 | sp_counted_impl_p( sp_counted_impl_p const & ); |
71 | sp_counted_impl_p & operator= ( sp_counted_impl_p const & ); |
72 | |
73 | typedef sp_counted_impl_p<X> this_type; |
74 | |
75 | public: |
76 | |
77 | explicit sp_counted_impl_p( X * px ): px_( px ) |
78 | { |
79 | #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) |
80 | boost::sp_scalar_constructor_hook( px, sizeof(X), this ); |
81 | #endif |
82 | } |
83 | |
84 | void dispose() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
85 | { |
86 | #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS) |
87 | boost::sp_scalar_destructor_hook( px_, sizeof(X), this ); |
88 | #endif |
89 | boost::checked_delete( px_ ); |
90 | } |
91 | |
92 | void * get_deleter( sp_typeinfo_ const & ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
93 | { |
94 | return 0; |
95 | } |
96 | |
97 | void * get_local_deleter( sp_typeinfo_ const & ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
98 | { |
99 | return 0; |
100 | } |
101 | |
102 | void * get_untyped_deleter() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
103 | { |
104 | return 0; |
105 | } |
106 | |
107 | #if defined(BOOST_SP_USE_STD_ALLOCATOR) |
108 | |
109 | void * operator new( std::size_t ) |
110 | { |
111 | return std::allocator<this_type>().allocate( 1, static_cast<this_type *>(0) ); |
112 | } |
113 | |
114 | void operator delete( void * p ) |
115 | { |
116 | std::allocator<this_type>().deallocate( static_cast<this_type *>(p), 1 ); |
117 | } |
118 | |
119 | #endif |
120 | |
121 | #if defined(BOOST_SP_USE_QUICK_ALLOCATOR) |
122 | |
123 | void * operator new( std::size_t ) |
124 | { |
125 | return quick_allocator<this_type>::alloc(); |
126 | } |
127 | |
128 | void operator delete( void * p ) |
129 | { |
130 | quick_allocator<this_type>::dealloc( p ); |
131 | } |
132 | |
133 | #endif |
134 | }; |
135 | |
136 | // |
137 | // Borland's Codeguard trips up over the -Vx- option here: |
138 | // |
139 | #ifdef __CODEGUARD__ |
140 | # pragma option push -Vx- |
141 | #endif |
142 | |
143 | template<class P, class D> class BOOST_SYMBOL_VISIBLE sp_counted_impl_pd: public sp_counted_base |
144 | { |
145 | private: |
146 | |
147 | P ptr; // copy constructor must not throw |
148 | D del; // copy constructor must not throw |
149 | |
150 | sp_counted_impl_pd( sp_counted_impl_pd const & ); |
151 | sp_counted_impl_pd & operator= ( sp_counted_impl_pd const & ); |
152 | |
153 | typedef sp_counted_impl_pd<P, D> this_type; |
154 | |
155 | public: |
156 | |
157 | // pre: d(p) must not throw |
158 | |
159 | sp_counted_impl_pd( P p, D & d ): ptr( p ), del( d ) |
160 | { |
161 | } |
162 | |
163 | sp_counted_impl_pd( P p ): ptr( p ), del() |
164 | { |
165 | } |
166 | |
167 | void dispose() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
168 | { |
169 | del( ptr ); |
170 | } |
171 | |
172 | void * get_deleter( sp_typeinfo_ const & ti ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
173 | { |
174 | return ti == BOOST_SP_TYPEID_(D)? &reinterpret_cast<char&>( del ): 0; |
175 | } |
176 | |
177 | void * get_local_deleter( sp_typeinfo_ const & ti ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
178 | { |
179 | return ti == BOOST_SP_TYPEID_(D)? boost::detail::get_local_deleter( boost::addressof( del ) ): 0; |
180 | } |
181 | |
182 | void * get_untyped_deleter() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
183 | { |
184 | return &reinterpret_cast<char&>( del ); |
185 | } |
186 | |
187 | #if defined(BOOST_SP_USE_STD_ALLOCATOR) |
188 | |
189 | void * operator new( std::size_t ) |
190 | { |
191 | return std::allocator<this_type>().allocate( 1, static_cast<this_type *>(0) ); |
192 | } |
193 | |
194 | void operator delete( void * p ) |
195 | { |
196 | std::allocator<this_type>().deallocate( static_cast<this_type *>(p), 1 ); |
197 | } |
198 | |
199 | #endif |
200 | |
201 | #if defined(BOOST_SP_USE_QUICK_ALLOCATOR) |
202 | |
203 | void * operator new( std::size_t ) |
204 | { |
205 | return quick_allocator<this_type>::alloc(); |
206 | } |
207 | |
208 | void operator delete( void * p ) |
209 | { |
210 | quick_allocator<this_type>::dealloc( p ); |
211 | } |
212 | |
213 | #endif |
214 | }; |
215 | |
216 | template<class P, class D, class A> class BOOST_SYMBOL_VISIBLE sp_counted_impl_pda: public sp_counted_base |
217 | { |
218 | private: |
219 | |
220 | P p_; // copy constructor must not throw |
221 | D d_; // copy constructor must not throw |
222 | A a_; // copy constructor must not throw |
223 | |
224 | sp_counted_impl_pda( sp_counted_impl_pda const & ); |
225 | sp_counted_impl_pda & operator= ( sp_counted_impl_pda const & ); |
226 | |
227 | typedef sp_counted_impl_pda<P, D, A> this_type; |
228 | |
229 | public: |
230 | |
231 | // pre: d( p ) must not throw |
232 | |
233 | sp_counted_impl_pda( P p, D & d, A a ): p_( p ), d_( d ), a_( a ) |
234 | { |
235 | } |
236 | |
237 | sp_counted_impl_pda( P p, A a ): p_( p ), d_( a ), a_( a ) |
238 | { |
239 | } |
240 | |
241 | void dispose() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
242 | { |
243 | d_( p_ ); |
244 | } |
245 | |
246 | void destroy() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
247 | { |
248 | #if !defined( BOOST_NO_CXX11_ALLOCATOR ) |
249 | |
250 | typedef typename std::allocator_traits<A>::template rebind_alloc< this_type > A2; |
251 | |
252 | #else |
253 | |
254 | typedef typename A::template rebind< this_type >::other A2; |
255 | |
256 | #endif |
257 | |
258 | A2 a2( a_ ); |
259 | |
260 | this->~this_type(); |
261 | |
262 | a2.deallocate( this, 1 ); |
263 | } |
264 | |
265 | void * get_deleter( sp_typeinfo_ const & ti ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
266 | { |
267 | return ti == BOOST_SP_TYPEID_( D )? &reinterpret_cast<char&>( d_ ): 0; |
268 | } |
269 | |
270 | void * get_local_deleter( sp_typeinfo_ const & ti ) BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
271 | { |
272 | return ti == BOOST_SP_TYPEID_( D )? boost::detail::get_local_deleter( boost::addressof( d_ ) ): 0; |
273 | } |
274 | |
275 | void * get_untyped_deleter() BOOST_SP_NOEXCEPT BOOST_OVERRIDE |
276 | { |
277 | return &reinterpret_cast<char&>( d_ ); |
278 | } |
279 | }; |
280 | |
281 | #ifdef __CODEGUARD__ |
282 | # pragma option pop |
283 | #endif |
284 | |
285 | } // namespace detail |
286 | |
287 | } // namespace boost |
288 | |
289 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_IMPL_HPP_INCLUDED |
290 | |