caps_msvc_x86.hpp 1.7 KB

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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) 2009 Helge Bahmann
  7. * Copyright (c) 2013 Tim Blechmann
  8. * Copyright (c) 2012 - 2014 Andrey Semashev
  9. */
  10. /*!
  11. * \file atomic/detail/caps_msvc_x86.hpp
  12. *
  13. * This header defines feature capabilities macros
  14. */
  15. #ifndef BOOST_ATOMIC_DETAIL_CAPS_MSVC_X86_HPP_INCLUDED_
  16. #define BOOST_ATOMIC_DETAIL_CAPS_MSVC_X86_HPP_INCLUDED_
  17. #include <boost/atomic/detail/config.hpp>
  18. #ifdef BOOST_HAS_PRAGMA_ONCE
  19. #pragma once
  20. #endif
  21. #if defined(_M_IX86) && _M_IX86 >= 500
  22. #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
  23. #endif
  24. #if !defined(BOOST_ATOMIC_NO_CMPXCHG16B)
  25. #if defined(__clang__) && (defined(_M_AMD64) || defined(__x86_64__)) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
  26. #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
  27. #elif _MSC_VER >= 1500 && defined(_M_AMD64)
  28. #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
  29. #endif
  30. #endif
  31. #if defined(_MSC_VER) && (defined(_M_AMD64) || (defined(_M_IX86) && defined(_M_IX86_FP) && _M_IX86_FP >= 2))
  32. // Use mfence only if SSE2 is available
  33. #define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
  34. #endif
  35. #define BOOST_ATOMIC_INT8_LOCK_FREE 2
  36. #define BOOST_ATOMIC_INT16_LOCK_FREE 2
  37. #define BOOST_ATOMIC_INT32_LOCK_FREE 2
  38. #if defined(_M_AMD64) || defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B)
  39. #define BOOST_ATOMIC_INT64_LOCK_FREE 2
  40. #endif
  41. #if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) && (defined(BOOST_HAS_INT128) || !defined(BOOST_NO_ALIGNMENT))
  42. #define BOOST_ATOMIC_INT128_LOCK_FREE 2
  43. #endif
  44. #define BOOST_ATOMIC_POINTER_LOCK_FREE 2
  45. #define BOOST_ATOMIC_THREAD_FENCE 2
  46. #define BOOST_ATOMIC_SIGNAL_FENCE 2
  47. #endif // BOOST_ATOMIC_DETAIL_CAPS_MSVC_X86_HPP_INCLUDED_