Chris@102: /*
Chris@102:  * Distributed under the Boost Software License, Version 1.0.
Chris@102:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@102:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@102:  *
Chris@102:  * Copyright (c) 2014 Andrey Semashev
Chris@102:  */
Chris@102: /*!
Chris@102:  * \file   atomic/detail/int_sizes.hpp
Chris@102:  *
Chris@102:  * This header defines macros for testing buitin integer type sizes
Chris@102:  */
Chris@102: 
Chris@102: #ifndef BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_
Chris@102: #define BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_
Chris@102: 
Chris@102: #include <boost/atomic/detail/config.hpp>
Chris@102: 
Chris@102: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: // GCC and compatible compilers define internal macros with builtin type traits
Chris@102: #if defined(__SIZEOF_SHORT__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT __SIZEOF_SHORT__
Chris@102: #endif
Chris@102: #if defined(__SIZEOF_INT__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_INT __SIZEOF_INT__
Chris@102: #endif
Chris@102: #if defined(__SIZEOF_LONG__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG __SIZEOF_LONG__
Chris@102: #endif
Chris@102: #if defined(__SIZEOF_LONG_LONG__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG __SIZEOF_LONG_LONG__
Chris@102: #endif
Chris@102: #if defined(__SIZEOF_WCHAR_T__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T __SIZEOF_WCHAR_T__
Chris@102: #endif
Chris@102: #if defined(__SIZEOF_POINTER__)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER __SIZEOF_POINTER__
Chris@102: #elif defined(_MSC_VER)
Chris@102: #if defined(_M_AMD64) || defined(_M_IA64)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 8
Chris@102: #else
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 4
Chris@102: #endif
Chris@102: #endif
Chris@102: 
Chris@102: #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\
Chris@102:     !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG)
Chris@102: 
Chris@102: // Try to deduce sizes from limits
Chris@102: #include <limits.h>
Chris@102: #include <boost/cstdint.hpp>
Chris@102: 
Chris@102: #if (USHRT_MAX + 0) == 0xff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 1
Chris@102: #elif (USHRT_MAX + 0) == 0xffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 2
Chris@102: #elif (USHRT_MAX + 0) == 0xffffffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 4
Chris@102: #elif (USHRT_MAX + 0) == UINT64_C(0xffffffffffffffff)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 8
Chris@102: #endif
Chris@102: 
Chris@102: #if (UINT_MAX + 0) == 0xff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 1
Chris@102: #elif (UINT_MAX + 0) == 0xffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 2
Chris@102: #elif (UINT_MAX + 0) == 0xffffffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 4
Chris@102: #elif (UINT_MAX + 0) == UINT64_C(0xffffffffffffffff)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_INT 8
Chris@102: #endif
Chris@102: 
Chris@102: #if (ULONG_MAX + 0) == 0xff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 1
Chris@102: #elif (ULONG_MAX + 0) == 0xffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 2
Chris@102: #elif (ULONG_MAX + 0) == 0xffffffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 4
Chris@102: #elif (ULONG_MAX + 0) == UINT64_C(0xffffffffffffffff)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 8
Chris@102: #endif
Chris@102: 
Chris@102: #if defined(__hpux) // HP-UX's value of ULONG_LONG_MAX is unusable in preprocessor expressions
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8
Chris@102: #else
Chris@102: 
Chris@102: // The list of the non-standard macros (the ones except ULLONG_MAX) is taken from cstdint.hpp
Chris@102: #if defined(ULLONG_MAX)
Chris@102: #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULLONG_MAX
Chris@102: #elif defined(ULONG_LONG_MAX)
Chris@102: #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONG_LONG_MAX
Chris@102: #elif defined(ULONGLONG_MAX)
Chris@102: #define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONGLONG_MAX
Chris@102: #elif defined(_LLONG_MAX) // strangely enough, this one seems to be holding the limit for the unsigned integer
Chris@102: #define BOOST_ATOMIC_DETAIL_ULLONG_MAX _LLONG_MAX
Chris@102: #endif
Chris@102: 
Chris@102: #if (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 1
Chris@102: #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 2
Chris@102: #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffffffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 4
Chris@102: #elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == UINT64_C(0xffffffffffffffff)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8
Chris@102: #endif
Chris@102: 
Chris@102: #endif // defined(__hpux)
Chris@102: 
Chris@102: #endif
Chris@102: 
Chris@102: #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T)
Chris@102: 
Chris@102: #include <wchar.h>
Chris@102: #include <boost/cstdint.hpp>
Chris@102: 
Chris@102: #if defined(_MSC_VER) && _MSC_VER <= 1310
Chris@102: // MSVC 7.1 defines WCHAR_MAX to a value not suitable for constant expressions
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2
Chris@102: #elif (WCHAR_MAX + 0) == 0xff || (WCHAR_MAX + 0) == 0x7f
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 1
Chris@102: #elif (WCHAR_MAX + 0) == 0xffff || (WCHAR_MAX + 0) == 0x7fff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2
Chris@102: #elif (WCHAR_MAX + 0) == 0xffffffff || (WCHAR_MAX + 0) == 0x7fffffff
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 4
Chris@102: #elif (WCHAR_MAX + 0) == UINT64_C(0xffffffffffffffff) || (WCHAR_MAX + 0) == INT64_C(0x7fffffffffffffff)
Chris@102: #define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 8
Chris@102: #endif
Chris@102: #endif
Chris@102: 
Chris@102: #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\
Chris@102:     !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG) ||\
Chris@102:     !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T)
Chris@102: #error Boost.Atomic: Failed to determine builtin integer sizes, the target platform is not supported. Please, report to the developers.
Chris@102: #endif
Chris@102: 
Chris@102: #endif // BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_