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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/int_sizes.hpp | |
10 | * | |
11 | * This header defines macros for testing buitin integer type sizes | |
12 | */ | |
13 | ||
14 | #ifndef BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_ | |
15 | #define BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_ | |
16 | ||
17 | #include <boost/atomic/detail/config.hpp> | |
18 | ||
19 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
20 | #pragma once | |
21 | #endif | |
22 | ||
23 | // GCC and compatible compilers define internal macros with builtin type traits | |
24 | #if defined(__SIZEOF_SHORT__) | |
25 | #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT __SIZEOF_SHORT__ | |
26 | #endif | |
27 | #if defined(__SIZEOF_INT__) | |
28 | #define BOOST_ATOMIC_DETAIL_SIZEOF_INT __SIZEOF_INT__ | |
29 | #endif | |
30 | #if defined(__SIZEOF_LONG__) | |
31 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG __SIZEOF_LONG__ | |
32 | #endif | |
33 | #if defined(__SIZEOF_LONG_LONG__) | |
34 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG __SIZEOF_LONG_LONG__ | |
35 | #endif | |
36 | #if defined(__SIZEOF_WCHAR_T__) | |
37 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T __SIZEOF_WCHAR_T__ | |
38 | #endif | |
39 | #if defined(__SIZEOF_POINTER__) | |
40 | #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER __SIZEOF_POINTER__ | |
41 | #elif defined(_MSC_VER) | |
42 | #if defined(_M_AMD64) || defined(_M_IA64) | |
43 | #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 8 | |
44 | #else | |
45 | #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 4 | |
46 | #endif | |
47 | #endif | |
48 | ||
49 | #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\ | |
50 | !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG) | |
51 | ||
52 | // Try to deduce sizes from limits | |
53 | #include <limits.h> | |
54 | #include <boost/cstdint.hpp> | |
55 | ||
56 | #if (USHRT_MAX + 0) == 0xff | |
57 | #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 1 | |
58 | #elif (USHRT_MAX + 0) == 0xffff | |
59 | #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 2 | |
60 | #elif (USHRT_MAX + 0) == 0xffffffff | |
61 | #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 4 | |
62 | #elif (USHRT_MAX + 0) == UINT64_C(0xffffffffffffffff) | |
63 | #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 8 | |
64 | #endif | |
65 | ||
66 | #if (UINT_MAX + 0) == 0xff | |
67 | #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 1 | |
68 | #elif (UINT_MAX + 0) == 0xffff | |
69 | #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 2 | |
70 | #elif (UINT_MAX + 0) == 0xffffffff | |
71 | #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 4 | |
72 | #elif (UINT_MAX + 0) == UINT64_C(0xffffffffffffffff) | |
73 | #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 8 | |
74 | #endif | |
75 | ||
76 | #if (ULONG_MAX + 0) == 0xff | |
77 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 1 | |
78 | #elif (ULONG_MAX + 0) == 0xffff | |
79 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 2 | |
80 | #elif (ULONG_MAX + 0) == 0xffffffff | |
81 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 4 | |
82 | #elif (ULONG_MAX + 0) == UINT64_C(0xffffffffffffffff) | |
83 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 8 | |
84 | #endif | |
85 | ||
86 | #if defined(__hpux) // HP-UX's value of ULONG_LONG_MAX is unusable in preprocessor expressions | |
87 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8 | |
88 | #else | |
89 | ||
90 | // The list of the non-standard macros (the ones except ULLONG_MAX) is taken from cstdint.hpp | |
91 | #if defined(ULLONG_MAX) | |
92 | #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULLONG_MAX | |
93 | #elif defined(ULONG_LONG_MAX) | |
94 | #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONG_LONG_MAX | |
95 | #elif defined(ULONGLONG_MAX) | |
96 | #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONGLONG_MAX | |
97 | #elif defined(_LLONG_MAX) // strangely enough, this one seems to be holding the limit for the unsigned integer | |
98 | #define BOOST_ATOMIC_DETAIL_ULLONG_MAX _LLONG_MAX | |
99 | #endif | |
100 | ||
101 | #if (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xff | |
102 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 1 | |
103 | #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffff | |
104 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 2 | |
105 | #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffffffff | |
106 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 4 | |
107 | #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == UINT64_C(0xffffffffffffffff) | |
108 | #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8 | |
109 | #endif | |
110 | ||
111 | #endif // defined(__hpux) | |
112 | ||
113 | #endif | |
114 | ||
115 | #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T) | |
116 | ||
117 | #include <wchar.h> | |
118 | #include <boost/cstdint.hpp> | |
119 | ||
120 | #if defined(_MSC_VER) && ( _MSC_VER <= 1310 || defined(UNDER_CE) && _MSC_VER <= 1500 ) | |
121 | // MSVC 7.1 and MSVC 8 (arm) define WCHAR_MAX to a value not suitable for constant expressions | |
122 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2 | |
123 | #elif (WCHAR_MAX + 0) == 0xff || (WCHAR_MAX + 0) == 0x7f | |
124 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 1 | |
125 | #elif (WCHAR_MAX + 0) == 0xffff || (WCHAR_MAX + 0) == 0x7fff | |
126 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2 | |
127 | #elif (WCHAR_MAX + 0) == 0xffffffff || (WCHAR_MAX + 0) == 0x7fffffff | |
128 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 4 | |
129 | #elif (WCHAR_MAX + 0) == UINT64_C(0xffffffffffffffff) || (WCHAR_MAX + 0) == INT64_C(0x7fffffffffffffff) | |
130 | #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 8 | |
131 | #endif | |
132 | #endif | |
133 | ||
134 | #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\ | |
135 | !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG) ||\ | |
136 | !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T) | |
137 | #error Boost.Atomic: Failed to determine builtin integer sizes, the target platform is not supported. Please, report to the developers. | |
138 | #endif | |
139 | ||
140 | #endif // BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_ |