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Make memory_order unconditionally a C++11 scoped enum.

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Andrey Semashev
2025-06-10 00:17:55 +03:00
parent 37c2b67324
commit d70a1d8ba2
1 changed files with 8 additions and 26 deletions
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34
include/boost/memory_order.hpp
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@@ -3,7 +3,7 @@
// Defines enum boost::memory_order per the C++0x working draft
//
// Copyright (c) 2008, 2009 Peter Dimov
// Copyright (c) 2018 Andrey Semashev
// Copyright (c) 2018, 2025 Andrey Semashev
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
@@ -15,7 +15,7 @@
#include <boost/config.hpp>
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#pragma once
#endif
namespace boost
@@ -42,8 +42,6 @@ namespace boost
// efficiently in compare_exchange methods.
//
#if !defined(BOOST_NO_CXX11_SCOPED_ENUMS)
enum class memory_order : unsigned int
{
relaxed = 0,
@@ -54,28 +52,12 @@ enum class memory_order : unsigned int
seq_cst = 14 // acq_rel | 8
};
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_relaxed = memory_order::relaxed;
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_consume = memory_order::consume;
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_acquire = memory_order::acquire;
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_release = memory_order::release;
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_acq_rel = memory_order::acq_rel;
BOOST_INLINE_VARIABLE BOOST_CONSTEXPR_OR_CONST memory_order memory_order_seq_cst = memory_order::seq_cst;
#undef BOOST_MEMORY_ORDER_INLINE_VARIABLE
#else // !defined(BOOST_NO_CXX11_SCOPED_ENUMS)
enum memory_order
{
memory_order_relaxed = 0,
memory_order_consume = 1,
memory_order_acquire = 2,
memory_order_release = 4,
memory_order_acq_rel = 6, // acquire | release
memory_order_seq_cst = 14 // acq_rel | 8
};
#endif // !defined(BOOST_NO_CXX11_SCOPED_ENUMS)
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_relaxed = memory_order::relaxed;
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_consume = memory_order::consume;
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_acquire = memory_order::acquire;
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_release = memory_order::release;
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_acq_rel = memory_order::acq_rel;
BOOST_INLINE_VARIABLE constexpr memory_order memory_order_seq_cst = memory_order::seq_cst;
} // namespace boost