整理

include/boost/atomic/detail/caps_arch_msvc_x86.hpp

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+/*
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * Copyright (c) 2009 Helge Bahmann
+ * Copyright (c) 2013 Tim Blechmann
+ * Copyright (c) 2012 - 2014 Andrey Semashev
+ */
+/*!
+ * \file   atomic/detail/caps_arch_msvc_x86.hpp
+ *
+ * This header defines feature capabilities macros
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_CAPS_ARCH_MSVC_X86_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_CAPS_ARCH_MSVC_X86_HPP_INCLUDED_
+
+#include <boost/atomic/detail/config.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if defined(_M_IX86) && _M_IX86 >= 500
+#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
+#endif
+
+#if defined(_M_AMD64) && !defined(BOOST_ATOMIC_NO_CMPXCHG16B)
+#if defined(__clang__)
+#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
+#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
+#endif
+#elif _MSC_VER >= 1500
+#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
+#endif
+#endif
+
+#if defined(_MSC_VER) && (defined(_M_AMD64) || (defined(_M_IX86) && defined(_M_IX86_FP) && _M_IX86_FP >= 2))
+// Use mfence only if SSE2 is available
+#define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
+#endif
+
+#define BOOST_ATOMIC_INT8_LOCK_FREE 2
+#define BOOST_ATOMIC_INT16_LOCK_FREE 2
+#define BOOST_ATOMIC_INT32_LOCK_FREE 2
+
+#if defined(_M_AMD64) || defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B)
+#define BOOST_ATOMIC_INT64_LOCK_FREE 2
+#endif
+
+#if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B)
+#define BOOST_ATOMIC_INT128_LOCK_FREE 2
+#endif
+
+#define BOOST_ATOMIC_POINTER_LOCK_FREE 2
+
+#define BOOST_ATOMIC_THREAD_FENCE 2
+#define BOOST_ATOMIC_SIGNAL_FENCE 2
+
+#endif // BOOST_ATOMIC_DETAIL_CAPS_ARCH_MSVC_X86_HPP_INCLUDED_