libs/url/include/boost/url/grammar/detail/recycled.hpp

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1		//
2		// Copyright (c) 2022 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/url
8		//
9
10		#ifndef BOOST_URL_GRAMMAR_DETAIL_RECYCLED_HPP
11		#define BOOST_URL_GRAMMAR_DETAIL_RECYCLED_HPP
12
13		#include <utility>
14
15		namespace boost {
16		namespace urls {
17		namespace grammar {
18		namespace implementation_defined {
19
20		template<
21		std::size_t Size,
22		std::size_t Align>
23		struct aligned_storage_impl
24		{
25	38	void* addr() noexcept
26		{
27	38	return buf_;
28		}
29
30		void const* addr() const noexcept
31		{
32		return buf_;
33		}
34
35		private:
36		alignas(Align)
37		unsigned char buf_[Size];
38		};
39
40		constexpr
41		std::size_t
42		nearest_pow2(
43		std::size_t x,
44		std::size_t f = 0) noexcept
45		{
46		return
47		(f <= (std::size_t(-1)/2))
48		? ( x <= f
49		? f
50		: nearest_pow2(x, 2 * f))
51		: x;
52		}
53
54		//------------------------------------------------
55
56		BOOST_URL_DECL
57		void
58		recycled_add_impl(
59		std::size_t) noexcept;
60
61		BOOST_URL_DECL
62		void
63		recycled_remove_impl(
64		std::size_t) noexcept;
65
66		#ifdef BOOST_URL_REPORT
67
68		inline
69		void
70		recycled_add(
71		std::size_t n) noexcept
72		{
73		recycled_add_impl(n);
74		}
75
76		inline
77		void
78		recycled_remove(
79		std::size_t n) noexcept
80		{
81		recycled_remove_impl(n);
82		}
83
84		#else
85
86	14	inline void recycled_add(
87		std::size_t) noexcept
88		{
89	14	}
90	12	inline void recycled_remove(
91		std::size_t) noexcept
92		{
93	12	}
94
95		#endif
96
97		} // implementation_defined
98		} // grammar
99		} // urls
100		} // boost
101
102		#endif
103