2 * Distributed under the Boost Software License, Version 1.0.
3 * (See accompanying file LICENSE_1_0.txt or copy at
4 * http://www.boost.org/LICENSE_1_0.txt)
6 * Copyright (c) 2014 Andrey Semashev
9 * \file atomic/detail/caps_gcc_atomic.hpp
11 * This header defines feature capabilities macros
14 #ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
15 #define BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
17 #include <boost/atomic/detail/config.hpp>
18 #include <boost/atomic/detail/int_sizes.hpp>
20 #ifdef BOOST_HAS_PRAGMA_ONCE
24 #if defined(__i386__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)
25 #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
28 #if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
29 #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
32 #if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) && (defined(BOOST_HAS_INT128) || !defined(BOOST_NO_ALIGNMENT))
33 #define BOOST_ATOMIC_INT128_LOCK_FREE 2
35 #define BOOST_ATOMIC_INT128_LOCK_FREE 0
38 #if __GCC_ATOMIC_LLONG_LOCK_FREE == 2
39 #define BOOST_ATOMIC_LLONG_LOCK_FREE 2
41 #define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT128_LOCK_FREE
44 #if __GCC_ATOMIC_LONG_LOCK_FREE == 2
45 #define BOOST_ATOMIC_LONG_LOCK_FREE 2
47 #define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
50 #if __GCC_ATOMIC_INT_LOCK_FREE == 2
51 #define BOOST_ATOMIC_INT_LOCK_FREE 2
53 #define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
56 #if __GCC_ATOMIC_SHORT_LOCK_FREE == 2
57 #define BOOST_ATOMIC_SHORT_LOCK_FREE 2
59 #define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
62 #if __GCC_ATOMIC_CHAR_LOCK_FREE == 2
63 #define BOOST_ATOMIC_CHAR_LOCK_FREE 2
65 #define BOOST_ATOMIC_CHAR_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
68 #if __GCC_ATOMIC_POINTER_LOCK_FREE == 2
69 #define BOOST_ATOMIC_POINTER_LOCK_FREE 2
71 #define BOOST_ATOMIC_POINTER_LOCK_FREE 0
75 #define BOOST_ATOMIC_INT8_LOCK_FREE BOOST_ATOMIC_CHAR_LOCK_FREE
77 #if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 2
78 #define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
79 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 2
80 #define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
81 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 2
82 #define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
83 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 2
84 #define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
86 #define BOOST_ATOMIC_INT16_LOCK_FREE 0
89 #if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 4
90 #define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
91 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 4
92 #define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
93 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 4
94 #define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
95 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 4
96 #define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
98 #define BOOST_ATOMIC_INT32_LOCK_FREE 0
101 #if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 8
102 #define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
103 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 8
104 #define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
105 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 8
106 #define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
107 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 8
108 #define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
110 #define BOOST_ATOMIC_INT64_LOCK_FREE 0
114 #if __GCC_ATOMIC_WCHAR_T_LOCK_FREE == 2
115 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 2
116 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 8
117 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
118 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 4
119 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
120 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 2
121 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
122 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 1
123 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
125 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 0
128 #define BOOST_ATOMIC_CHAR32_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
129 #define BOOST_ATOMIC_CHAR16_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
131 #define BOOST_ATOMIC_THREAD_FENCE 2
132 #define BOOST_ATOMIC_SIGNAL_FENCE 2
134 #endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_