]>
Commit | Line | Data |
---|---|---|
92f5a8d4 TL |
1 | // Copyright 2018 Glen Joseph Fernandes |
2 | // (glenjofe@gmail.com) | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0. | |
5 | // (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | ||
8 | #ifndef BOOST_CIRCULAR_BUFFER_ALLOCATORS_HPP | |
9 | #define BOOST_CIRCULAR_BUFFER_ALLOCATORS_HPP | |
10 | ||
11 | #include <boost/config.hpp> | |
12 | #if defined(BOOST_NO_CXX11_ALLOCATOR) | |
13 | #define BOOST_CB_NO_CXX11_ALLOCATOR | |
14 | #elif defined(BOOST_LIBSTDCXX_VERSION) && (BOOST_LIBSTDCXX_VERSION < 40800) | |
15 | #define BOOST_CB_NO_CXX11_ALLOCATOR | |
16 | #endif | |
17 | #if !defined(BOOST_CB_NO_CXX11_ALLOCATOR) | |
18 | #include <memory> | |
19 | #else | |
20 | #include <new> | |
21 | #endif | |
22 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
23 | #include <utility> | |
24 | #endif | |
25 | ||
26 | namespace boost { | |
27 | namespace cb_details { | |
28 | ||
29 | #if !defined(BOOST_CB_NO_CXX11_ALLOCATOR) | |
30 | using std::allocator_traits; | |
31 | #else | |
32 | template<class A> | |
33 | struct allocator_traits { | |
34 | typedef typename A::value_type value_type; | |
35 | typedef typename A::pointer pointer; | |
36 | typedef typename A::const_pointer const_pointer; | |
37 | typedef typename A::difference_type difference_type; | |
38 | typedef typename A::size_type size_type; | |
39 | ||
40 | static size_type max_size(const A& a) BOOST_NOEXCEPT { | |
41 | return a.max_size(); | |
42 | } | |
43 | ||
44 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
45 | #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) | |
46 | template<class U, class... Args> | |
47 | static void construct(const A&, U* ptr, Args&&... args) { | |
48 | ::new((void*)ptr) U(std::forward<Args>(args)...); | |
49 | } | |
50 | #else | |
51 | template<class U, class V> | |
52 | static void construct(const A&, U* ptr, V&& value) { | |
53 | ::new((void*)ptr) U(std::forward<V>(value)); | |
54 | } | |
55 | #endif | |
56 | #else | |
57 | template<class U, class V> | |
58 | static void construct(const A&, U* ptr, const V& value) { | |
59 | ::new((void*)ptr) U(value); | |
60 | } | |
61 | ||
62 | template<class U, class V> | |
63 | static void construct(const A&, U* ptr, V& value) { | |
64 | ::new((void*)ptr) U(value); | |
65 | } | |
66 | #endif | |
67 | ||
68 | template<class U> | |
69 | static void destroy(const A&, U* ptr) { | |
70 | (void)ptr; | |
71 | ptr->~U(); | |
72 | } | |
73 | }; | |
74 | #endif | |
75 | ||
76 | } // cb_details | |
77 | } // boost | |
78 | ||
79 | #endif |