1 | // atomic_tools.hpp ------------------------------------------------------------------// |
2 | |
3 | // Copyright 2021 Andrey Semashev |
4 | |
5 | // Distributed under the Boost Software License, Version 1.0. |
6 | // See http://www.boost.org/LICENSE_1_0.txt |
7 | |
8 | // See library home page at http://www.boost.org/libs/filesystem |
9 | |
10 | //--------------------------------------------------------------------------------------// |
11 | |
12 | #ifndef BOOST_FILESYSTEM_SRC_ATOMIC_TOOLS_HPP_ |
13 | #define BOOST_FILESYSTEM_SRC_ATOMIC_TOOLS_HPP_ |
14 | |
15 | #include <boost/filesystem/config.hpp> |
16 | |
17 | #if !defined(BOOST_FILESYSTEM_SINGLE_THREADED) |
18 | |
19 | #include "atomic_ref.hpp" |
20 | |
21 | namespace boost { |
22 | namespace filesystem { |
23 | namespace detail { |
24 | |
25 | //! Atomically loads the value |
26 | template< typename T > |
27 | BOOST_FORCEINLINE T atomic_load_relaxed(T& a) |
28 | { |
29 | return atomic_ns::atomic_ref< T >(a).load(atomic_ns::memory_order_relaxed); |
30 | } |
31 | |
32 | //! Atomically stores the value |
33 | template< typename T > |
34 | BOOST_FORCEINLINE void atomic_store_relaxed(T& a, T val) |
35 | { |
36 | atomic_ns::atomic_ref< T >(a).store(val, atomic_ns::memory_order_relaxed); |
37 | } |
38 | |
39 | } // namespace detail |
40 | } // namespace filesystem |
41 | } // namespace boost |
42 | |
43 | #else // !defined(BOOST_FILESYSTEM_SINGLE_THREADED) |
44 | |
45 | namespace boost { |
46 | namespace filesystem { |
47 | namespace detail { |
48 | |
49 | //! Atomically loads the value |
50 | template< typename T > |
51 | BOOST_FORCEINLINE T atomic_load_relaxed(T const& a) |
52 | { |
53 | return a; |
54 | } |
55 | |
56 | //! Atomically stores the value |
57 | template< typename T > |
58 | BOOST_FORCEINLINE void atomic_store_relaxed(T& a, T val) |
59 | { |
60 | a = val; |
61 | } |
62 | |
63 | } // namespace detail |
64 | } // namespace filesystem |
65 | } // namespace boost |
66 | |
67 | #endif // !defined(BOOST_FILESYSTEM_SINGLE_THREADED) |
68 | |
69 | #endif // BOOST_FILESYSTEM_SRC_ATOMIC_TOOLS_HPP_ |
70 | |