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1 | #ifndef BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP |
2 | #define BOOST_THREAD_DETAIL_INTERLOCKED_READ_WIN32_HPP | |
3 | ||
4 | // interlocked_read_win32.hpp | |
5 | // | |
6 | // (C) Copyright 2005-8 Anthony Williams | |
7 | // (C) Copyright 2012 Vicente J. Botet Escriba | |
8 | // | |
9 | // Distributed under the Boost Software License, Version 1.0. (See | |
10 | // accompanying file LICENSE_1_0.txt or copy at | |
11 | // http://www.boost.org/LICENSE_1_0.txt) | |
12 | ||
13 | #include <boost/detail/interlocked.hpp> | |
14 | #include <boost/thread/detail/config.hpp> | |
15 | ||
16 | #include <boost/config/abi_prefix.hpp> | |
17 | ||
18 | #ifdef BOOST_MSVC | |
19 | ||
20 | namespace boost | |
21 | { | |
22 | namespace detail | |
23 | { | |
24 | // Since VS2005 volatile reads always acquire | |
25 | inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT | |
26 | { | |
27 | long const res=*x; | |
28 | return res; | |
29 | } | |
30 | inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT | |
31 | { | |
32 | void* const res=*x; | |
33 | return res; | |
34 | } | |
35 | ||
36 | // Since VS2005 volatile writes always release | |
37 | inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT | |
38 | { | |
39 | *x=value; | |
40 | } | |
41 | inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT | |
42 | { | |
43 | *x=value; | |
44 | } | |
45 | } | |
46 | } | |
47 | ||
48 | #else | |
49 | ||
50 | namespace boost | |
51 | { | |
52 | namespace detail | |
53 | { | |
54 | inline long interlocked_read_acquire(long volatile* x) BOOST_NOEXCEPT | |
55 | { | |
56 | return BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,0,0); | |
57 | } | |
58 | inline void* interlocked_read_acquire(void* volatile* x) BOOST_NOEXCEPT | |
59 | { | |
60 | return BOOST_INTERLOCKED_COMPARE_EXCHANGE_POINTER(x,0,0); | |
61 | } | |
62 | inline void interlocked_write_release(long volatile* x,long value) BOOST_NOEXCEPT | |
63 | { | |
64 | BOOST_INTERLOCKED_EXCHANGE(x,value); | |
65 | } | |
66 | inline void interlocked_write_release(void* volatile* x,void* value) BOOST_NOEXCEPT | |
67 | { | |
68 | BOOST_INTERLOCKED_EXCHANGE_POINTER(x,value); | |
69 | } | |
70 | } | |
71 | } | |
72 | ||
73 | #endif | |
74 | ||
75 | #include <boost/config/abi_suffix.hpp> | |
76 | ||
77 | #endif |