| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/boostorg/json | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_JSON_DETAIL_SHARED_RESOURCE_HPP | ||
| 11 | #define BOOST_JSON_DETAIL_SHARED_RESOURCE_HPP | ||
| 12 | |||
| 13 | #include <boost/container/pmr/memory_resource.hpp> | ||
| 14 | #include <boost/json/memory_resource.hpp> | ||
| 15 | #include <atomic> | ||
| 16 | #include <utility> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace json { | ||
| 20 | namespace detail { | ||
| 21 | |||
| 22 | #ifdef _MSC_VER | ||
| 23 | #pragma warning(push) | ||
| 24 | #pragma warning(disable: 4275) // non dll-interface class used as base for dll-interface class | ||
| 25 | #endif | ||
| 26 | |||
| 27 | struct BOOST_SYMBOL_VISIBLE | ||
| 28 | shared_resource | ||
| 29 | : container::pmr::memory_resource | ||
| 30 | { | ||
| 31 | BOOST_JSON_DECL | ||
| 32 | shared_resource(); | ||
| 33 | |||
| 34 | BOOST_JSON_DECL | ||
| 35 | ~shared_resource(); | ||
| 36 | |||
| 37 | std::atomic<std::size_t> refs{ 1 }; | ||
| 38 | }; | ||
| 39 | |||
| 40 | template<class T> | ||
| 41 | class shared_resource_impl final | ||
| 42 | : public shared_resource | ||
| 43 | { | ||
| 44 | T t; | ||
| 45 | |||
| 46 | public: | ||
| 47 | template<class... Args> | ||
| 48 | 35 | shared_resource_impl( | |
| 49 | Args&&... args) | ||
| 50 |
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35 | : t(std::forward<Args>(args)...) |
| 51 | { | ||
| 52 | 35 | } | |
| 53 | |||
| 54 | void* | ||
| 55 | 71 | do_allocate( | |
| 56 | std::size_t n, | ||
| 57 | std::size_t align) override | ||
| 58 | { | ||
| 59 | 71 | return t.allocate(n, align); | |
| 60 | } | ||
| 61 | |||
| 62 | void | ||
| 63 | 71 | do_deallocate( | |
| 64 | void* p, | ||
| 65 | std::size_t n, | ||
| 66 | std::size_t align) override | ||
| 67 | { | ||
| 68 | 71 | return t.deallocate(p, n, align); | |
| 69 | } | ||
| 70 | |||
| 71 | bool | ||
| 72 | 12 | do_is_equal( | |
| 73 | memory_resource const&) const noexcept override | ||
| 74 | { | ||
| 75 | // VFALCO Is always false ok? | ||
| 76 | 12 | return false; | |
| 77 | } | ||
| 78 | }; | ||
| 79 | |||
| 80 | #ifdef _MSC_VER | ||
| 81 | #pragma warning(pop) | ||
| 82 | #endif | ||
| 83 | |||
| 84 | } // detail | ||
| 85 | } // namespace json | ||
| 86 | } // namespace boost | ||
| 87 | |||
| 88 | #endif | ||
| 89 |