1/*
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)
5 *
6 * Copyright (c) 2014 Andrey Semashev
7 */
8/*!
9 * \file atomic/detail/caps_gcc_atomic.hpp
10 *
11 * This header defines feature capabilities macros
12 */
13
14#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
15#define BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
16
17#include <boost/atomic/detail/config.hpp>
18#include <boost/atomic/detail/int_sizes.hpp>
19
20#ifdef BOOST_HAS_PRAGMA_ONCE
21#pragma once
22#endif
23
24#if defined(__i386__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)
25#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
26#endif
27
28#if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
29#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
30#endif
31
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
34#else
35#define BOOST_ATOMIC_INT128_LOCK_FREE 0
36#endif
37
38#if __GCC_ATOMIC_LLONG_LOCK_FREE == 2
39#define BOOST_ATOMIC_LLONG_LOCK_FREE 2
40#else
41#define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT128_LOCK_FREE
42#endif
43
44#if __GCC_ATOMIC_LONG_LOCK_FREE == 2
45#define BOOST_ATOMIC_LONG_LOCK_FREE 2
46#else
47#define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
48#endif
49
50#if __GCC_ATOMIC_INT_LOCK_FREE == 2
51#define BOOST_ATOMIC_INT_LOCK_FREE 2
52#else
53#define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
54#endif
55
56#if __GCC_ATOMIC_SHORT_LOCK_FREE == 2
57#define BOOST_ATOMIC_SHORT_LOCK_FREE 2
58#else
59#define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
60#endif
61
62#if __GCC_ATOMIC_CHAR_LOCK_FREE == 2
63#define BOOST_ATOMIC_CHAR_LOCK_FREE 2
64#else
65#define BOOST_ATOMIC_CHAR_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
66#endif
67
68#if __GCC_ATOMIC_POINTER_LOCK_FREE == 2
69#define BOOST_ATOMIC_POINTER_LOCK_FREE 2
70#else
71#define BOOST_ATOMIC_POINTER_LOCK_FREE 0
72#endif
73
74
75#define BOOST_ATOMIC_INT8_LOCK_FREE BOOST_ATOMIC_CHAR_LOCK_FREE
76
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
85#else
86#define BOOST_ATOMIC_INT16_LOCK_FREE 0
87#endif
88
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
97#else
98#define BOOST_ATOMIC_INT32_LOCK_FREE 0
99#endif
100
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
109#else
110#define BOOST_ATOMIC_INT64_LOCK_FREE 0
111#endif
112
113
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
124#else
125#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 0
126#endif
127
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
130
131#define BOOST_ATOMIC_THREAD_FENCE 2
132#define BOOST_ATOMIC_SIGNAL_FENCE 2
133
134#endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
135