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|---|---|---|---|
| 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/CPPAlliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_HTTP_PROTO_DETAIL_IMPL_WORKSPACE_IPP | ||
| 11 | #define BOOST_HTTP_PROTO_DETAIL_IMPL_WORKSPACE_IPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/detail/workspace.hpp> | ||
| 14 | #include <boost/http_proto/detail/except.hpp> | ||
| 15 | |||
| 16 | namespace boost { | ||
| 17 | namespace http_proto { | ||
| 18 | namespace detail { | ||
| 19 | |||
| 20 | workspace:: | ||
| 21 | any:: | ||
| 22 | ~any() = default; | ||
| 23 | |||
| 24 | void | ||
| 25 | 36 | workspace:: | |
| 26 | clear() noexcept | ||
| 27 | { | ||
| 28 | 36 | auto const end = | |
| 29 | reinterpret_cast< | ||
| 30 | any const*>(end_); | ||
| 31 | 36 | auto p = | |
| 32 | reinterpret_cast< | ||
| 33 | any const*>(head_); | ||
| 34 |
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74 | while(p != end) |
| 35 | { | ||
| 36 | 38 | auto next = p->next; | |
| 37 | 38 | p->~any(); | |
| 38 | 38 | p = next; | |
| 39 | } | ||
| 40 | 36 | head_ = end_; | |
| 41 | 36 | } | |
| 42 | |||
| 43 | void* | ||
| 44 | ✗ | workspace:: | |
| 45 | reserve(std::size_t n) | ||
| 46 | { | ||
| 47 | // Requested n exceeds available space | ||
| 48 | ✗ | if(n > size()) | |
| 49 | ✗ | detail::throw_length_error(); | |
| 50 | |||
| 51 | struct empty : any | ||
| 52 | { | ||
| 53 | }; | ||
| 54 | |||
| 55 | using U = empty; | ||
| 56 | ✗ | auto p = ::new(bump_down( | |
| 57 | sizeof(U) + n, alignof( | ||
| 58 | ✗ | ::max_align_t))) U; | |
| 59 | ✗ | p->next = reinterpret_cast< | |
| 60 | ✗ | any*>(head_); | |
| 61 | ✗ | head_ = reinterpret_cast< | |
| 62 | unsigned char*>(p); | ||
| 63 | ✗ | return p + 1; | |
| 64 | } | ||
| 65 | |||
| 66 | } // detail | ||
| 67 | } // http_proto | ||
| 68 | } // boost | ||
| 69 | |||
| 70 | #endif | ||
| 71 |