code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/atomic_flag.hpp
 *
 * This header contains interface definition of \c atomic_flag.
 */

#ifndef BOOST_ATOMIC_DETAIL_ATOMIC_FLAG_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_ATOMIC_FLAG_HPP_INCLUDED_

#include <boost/assert.hpp>
#include <boost/memory_order.hpp>
#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/operations_lockfree.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

/*
 * IMPLEMENTATION NOTE: All interface functions MUST be declared with BOOST_FORCEINLINE,
 *                      see comment for convert_memory_order_to_gcc in ops_gcc_atomic.hpp.
 */

namespace boost {
namespace atomics {

#if defined(BOOST_NO_CXX11_CONSTEXPR) || defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)
#define BOOST_ATOMIC_NO_ATOMIC_FLAG_INIT
#else
#define BOOST_ATOMIC_FLAG_INIT {}
#endif

struct atomic_flag
{
    typedef atomics::detail::operations< 1u, false > operations;
    typedef operations::storage_type storage_type;

    operations::aligned_storage_type m_storage;

    BOOST_FORCEINLINE BOOST_CONSTEXPR atomic_flag() BOOST_NOEXCEPT : m_storage(0)
    {
    }

    BOOST_FORCEINLINE bool test_and_set(memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return operations::test_and_set(m_storage.value, order);
    }

    BOOST_FORCEINLINE void clear(memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);
        operations::clear(m_storage.value, order);
    }

    BOOST_DELETED_FUNCTION(atomic_flag(atomic_flag const&))
    BOOST_DELETED_FUNCTION(atomic_flag& operator= (atomic_flag const&))
};

} // namespace atomics
} // namespace boost

#endif // BOOST_ATOMIC_DETAIL_ATOMIC_FLAG_HPP_INCLUDED_


code:
/*
 * 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) 2011 Helge Bahmann
 * Copyright (c) 2013 Tim Blechmann
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/atomic_template.hpp
 *
 * This header contains interface definition of \c atomic template.
 */

#ifndef BOOST_ATOMIC_DETAIL_ATOMIC_TEMPLATE_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_ATOMIC_TEMPLATE_HPP_INCLUDED_

#include <cstddef>
#include <boost/cstdint.hpp>
#include <boost/assert.hpp>
#include <boost/type_traits/is_signed.hpp>
#include <boost/type_traits/is_integral.hpp>
#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/bitwise_cast.hpp>
#include <boost/atomic/detail/operations_fwd.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(BOOST_MSVC)
#pragma warning(push)
// 'boost::atomics::atomic<T>' : multiple assignment operators specified
#pragma warning(disable: 4522)
#endif

/*
 * IMPLEMENTATION NOTE: All interface functions MUST be declared with BOOST_FORCEINLINE,
 *                      see comment for convert_memory_order_to_gcc in ops_gcc_atomic.hpp.
 */

namespace boost {
namespace atomics {
namespace detail {

BOOST_FORCEINLINE BOOST_CONSTEXPR memory_order deduce_failure_order(memory_order order) BOOST_NOEXCEPT
{
    return order == memory_order_acq_rel ? memory_order_acquire : (order == memory_order_release ? memory_order_relaxed : order);
}

BOOST_FORCEINLINE BOOST_CONSTEXPR bool cas_failure_order_must_not_be_stronger_than_success_order(memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
{
    // 15 == (memory_order_seq_cst | memory_order_consume), see memory_order.hpp
    // Given the enum values we can test the strength of memory order requirements with this single condition.
    return (failure_order & 15u) <= (success_order & 15u);
}

template< typename T, bool IsInt = boost::is_integral< T >::value >
struct classify
{
    typedef void type;
};

template< typename T >
struct classify< T, true > { typedef int type; };

template< typename T >
struct classify< T*, false > { typedef void* type; };

template< typename T, typename Kind >
class base_atomic;

//! Implementation for integers
template< typename T >
class base_atomic< T, int >
{
private:
    typedef T value_type;
    typedef T difference_type;

protected:
    typedef atomics::detail::operations< storage_size_of< value_type >::value, boost::is_signed< T >::value > operations;
    typedef value_type value_arg_type;

public:
    typedef typename operations::storage_type storage_type;

protected:
    typename operations::aligned_storage_type m_storage;

public:
    BOOST_DEFAULTED_FUNCTION(base_atomic(), {})
    BOOST_CONSTEXPR explicit base_atomic(value_type v) BOOST_NOEXCEPT : m_storage(v) {}

    BOOST_FORCEINLINE void store(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_consume);
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);

        operations::store(m_storage.value, static_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE value_type load(memory_order order = memory_order_seq_cst) const volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_release);
        BOOST_ASSERT(order != memory_order_acq_rel);

        return static_cast< value_type >(operations::load(m_storage.value, order));
    }

    BOOST_FORCEINLINE value_type fetch_add(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::fetch_add(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type fetch_sub(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::fetch_sub(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type exchange(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::exchange(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = static_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_strong(m_storage.value, old_value, static_cast< storage_type >(desired), success_order, failure_order);
        expected = static_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_strong(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = static_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_weak(m_storage.value, old_value, static_cast< storage_type >(desired), success_order, failure_order);
        expected = static_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_weak(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE value_type fetch_and(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::fetch_and(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type fetch_or(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::fetch_or(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type fetch_xor(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return static_cast< value_type >(operations::fetch_xor(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE bool is_lock_free() const volatile BOOST_NOEXCEPT
    {
        return operations::is_lock_free(m_storage.value);
    }

    BOOST_FORCEINLINE value_type operator++(int) volatile BOOST_NOEXCEPT
    {
        return fetch_add(1);
    }

    BOOST_FORCEINLINE value_type operator++() volatile BOOST_NOEXCEPT
    {
        return fetch_add(1) + 1;
    }

    BOOST_FORCEINLINE value_type operator--(int) volatile BOOST_NOEXCEPT
    {
        return fetch_sub(1);
    }

    BOOST_FORCEINLINE value_type operator--() volatile BOOST_NOEXCEPT
    {
        return fetch_sub(1) - 1;
    }

    BOOST_FORCEINLINE value_type operator+=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_add(v) + v;
    }

    BOOST_FORCEINLINE value_type operator-=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_sub(v) - v;
    }

    BOOST_FORCEINLINE value_type operator&=(value_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_and(v) & v;
    }

    BOOST_FORCEINLINE value_type operator|=(value_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_or(v) | v;
    }

    BOOST_FORCEINLINE value_type operator^=(value_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_xor(v) ^ v;
    }

    BOOST_DELETED_FUNCTION(base_atomic(base_atomic const&))
    BOOST_DELETED_FUNCTION(base_atomic& operator=(base_atomic const&))
};

//! Implementation for bool
template< >
class base_atomic< bool, int >
{
private:
    typedef bool value_type;

protected:
    typedef atomics::detail::operations< 1u, false > operations;
    typedef value_type value_arg_type;

public:
    typedef operations::storage_type storage_type;

protected:
    operations::aligned_storage_type m_storage;

public:
    BOOST_DEFAULTED_FUNCTION(base_atomic(), {})
    BOOST_CONSTEXPR explicit base_atomic(value_type v) BOOST_NOEXCEPT : m_storage(v) {}

    BOOST_FORCEINLINE void store(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_consume);
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);

        operations::store(m_storage.value, static_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE value_type load(memory_order order = memory_order_seq_cst) const volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_release);
        BOOST_ASSERT(order != memory_order_acq_rel);

        return !!operations::load(m_storage.value, order);
    }

    BOOST_FORCEINLINE value_type exchange(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return !!operations::exchange(m_storage.value, static_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = static_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_strong(m_storage.value, old_value, static_cast< storage_type >(desired), success_order, failure_order);
        expected = !!old_value;
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_strong(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = static_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_weak(m_storage.value, old_value, static_cast< storage_type >(desired), success_order, failure_order);
        expected = !!old_value;
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_weak(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool is_lock_free() const volatile BOOST_NOEXCEPT
    {
        return operations::is_lock_free(m_storage.value);
    }

    BOOST_DELETED_FUNCTION(base_atomic(base_atomic const&))
    BOOST_DELETED_FUNCTION(base_atomic& operator=(base_atomic const&))
};

//! Implementation for user-defined types, such as structs and enums
template< typename T >
class base_atomic< T, void >
{
private:
    typedef T value_type;

protected:
    typedef atomics::detail::operations< storage_size_of< value_type >::value, false > operations;
    typedef value_type const& value_arg_type;

public:
    typedef typename operations::storage_type storage_type;

protected:
    typename operations::aligned_storage_type m_storage;

public:
    BOOST_FORCEINLINE explicit base_atomic(value_type const& v = value_type()) BOOST_NOEXCEPT : m_storage(atomics::detail::bitwise_cast< storage_type >(v))
    {
    }

    BOOST_FORCEINLINE void store(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_consume);
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);

        operations::store(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE value_type load(memory_order order = memory_order_seq_cst) const volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_release);
        BOOST_ASSERT(order != memory_order_acq_rel);

        return atomics::detail::bitwise_cast< value_type >(operations::load(m_storage.value, order));
    }

    BOOST_FORCEINLINE value_type exchange(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::exchange(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_strong(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_strong(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_weak(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_weak(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool is_lock_free() const volatile BOOST_NOEXCEPT
    {
        return operations::is_lock_free(m_storage.value);
    }

    BOOST_DELETED_FUNCTION(base_atomic(base_atomic const&))
    BOOST_DELETED_FUNCTION(base_atomic& operator=(base_atomic const&))
};

//! Implementation for pointers
template< typename T >
class base_atomic< T*, void* >
{
private:
    typedef T* value_type;
    typedef std::ptrdiff_t difference_type;

protected:
    typedef atomics::detail::operations< storage_size_of< value_type >::value, false > operations;
    typedef value_type value_arg_type;

public:
    typedef typename operations::storage_type storage_type;

protected:
    typename operations::aligned_storage_type m_storage;

public:
    BOOST_DEFAULTED_FUNCTION(base_atomic(), {})
    BOOST_FORCEINLINE explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : m_storage(atomics::detail::bitwise_cast< storage_type >(v))
    {
    }

    BOOST_FORCEINLINE void store(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_consume);
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);

        operations::store(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE value_type load(memory_order order = memory_order_seq_cst) const volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_release);
        BOOST_ASSERT(order != memory_order_acq_rel);

        return atomics::detail::bitwise_cast< value_type >(operations::load(m_storage.value, order));
    }

    BOOST_FORCEINLINE value_type fetch_add(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::fetch_add(m_storage.value, static_cast< storage_type >(v * sizeof(T)), order));
    }

    BOOST_FORCEINLINE value_type fetch_sub(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::fetch_sub(m_storage.value, static_cast< storage_type >(v * sizeof(T)), order));
    }

    BOOST_FORCEINLINE value_type exchange(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::exchange(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_strong(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_strong(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_weak(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_weak(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool is_lock_free() const volatile BOOST_NOEXCEPT
    {
        return operations::is_lock_free(m_storage.value);
    }

    BOOST_FORCEINLINE value_type operator++(int) volatile BOOST_NOEXCEPT
    {
        return fetch_add(1);
    }

    BOOST_FORCEINLINE value_type operator++() volatile BOOST_NOEXCEPT
    {
        return fetch_add(1) + 1;
    }

    BOOST_FORCEINLINE value_type operator--(int) volatile BOOST_NOEXCEPT
    {
        return fetch_sub(1);
    }

    BOOST_FORCEINLINE value_type operator--() volatile BOOST_NOEXCEPT
    {
        return fetch_sub(1) - 1;
    }

    BOOST_FORCEINLINE value_type operator+=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_add(v) + v;
    }

    BOOST_FORCEINLINE value_type operator-=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return fetch_sub(v) - v;
    }

    BOOST_DELETED_FUNCTION(base_atomic(base_atomic const&))
    BOOST_DELETED_FUNCTION(base_atomic& operator=(base_atomic const&))
};

//! Implementation for void pointers
template< >
class base_atomic< void*, void* >
{
private:
    typedef void* value_type;
    typedef std::ptrdiff_t difference_type;

protected:
    typedef atomics::detail::operations< storage_size_of< value_type >::value, false > operations;
    typedef value_type value_arg_type;

public:
    typedef operations::storage_type storage_type;

protected:
    operations::aligned_storage_type m_storage;

public:
    BOOST_DEFAULTED_FUNCTION(base_atomic(), {})
    BOOST_FORCEINLINE explicit base_atomic(value_type const& v) BOOST_NOEXCEPT : m_storage(atomics::detail::bitwise_cast< storage_type >(v))
    {
    }

    BOOST_FORCEINLINE void store(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_consume);
        BOOST_ASSERT(order != memory_order_acquire);
        BOOST_ASSERT(order != memory_order_acq_rel);

        operations::store(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order);
    }

    BOOST_FORCEINLINE value_type load(memory_order order = memory_order_seq_cst) const volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(order != memory_order_release);
        BOOST_ASSERT(order != memory_order_acq_rel);

        return atomics::detail::bitwise_cast< value_type >(operations::load(m_storage.value, order));
    }

    BOOST_FORCEINLINE value_type fetch_add(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::fetch_add(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type fetch_sub(difference_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::fetch_sub(m_storage.value, static_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE value_type exchange(value_type v, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return atomics::detail::bitwise_cast< value_type >(operations::exchange(m_storage.value, atomics::detail::bitwise_cast< storage_type >(v), order));
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_strong(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_strong(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_strong(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order success_order, memory_order failure_order) volatile BOOST_NOEXCEPT
    {
        BOOST_ASSERT(failure_order != memory_order_release);
        BOOST_ASSERT(failure_order != memory_order_acq_rel);
        BOOST_ASSERT(cas_failure_order_must_not_be_stronger_than_success_order(success_order, failure_order));

        storage_type old_value = atomics::detail::bitwise_cast< storage_type >(expected);
        const bool res = operations::compare_exchange_weak(m_storage.value, old_value, atomics::detail::bitwise_cast< storage_type >(desired), success_order, failure_order);
        expected = atomics::detail::bitwise_cast< value_type >(old_value);
        return res;
    }

    BOOST_FORCEINLINE bool compare_exchange_weak(value_type& expected, value_type desired, memory_order order = memory_order_seq_cst) volatile BOOST_NOEXCEPT
    {
        return compare_exchange_weak(expected, desired, order, atomics::detail::deduce_failure_order(order));
    }

    BOOST_FORCEINLINE bool is_lock_free() const volatile BOOST_NOEXCEPT
    {
        return operations::is_lock_free(m_storage.value);
    }

    BOOST_FORCEINLINE value_type operator++(int) volatile BOOST_NOEXCEPT
    {
        return fetch_add(1);
    }

    BOOST_FORCEINLINE value_type operator++() volatile BOOST_NOEXCEPT
    {
        return (char*)fetch_add(1) + 1;
    }

    BOOST_FORCEINLINE value_type operator--(int) volatile BOOST_NOEXCEPT
    {
        return fetch_sub(1);
    }

    BOOST_FORCEINLINE value_type operator--() volatile BOOST_NOEXCEPT
    {
        return (char*)fetch_sub(1) - 1;
    }

    BOOST_FORCEINLINE value_type operator+=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return (char*)fetch_add(v) + v;
    }

    BOOST_FORCEINLINE value_type operator-=(difference_type v) volatile BOOST_NOEXCEPT
    {
        return (char*)fetch_sub(v) - v;
    }

    BOOST_DELETED_FUNCTION(base_atomic(base_atomic const&))
    BOOST_DELETED_FUNCTION(base_atomic& operator=(base_atomic const&))
};

} // namespace detail

template< typename T >
class atomic :
    public atomics::detail::base_atomic< T, typename atomics::detail::classify< T >::type >
{
private:
    typedef T value_type;
    typedef atomics::detail::base_atomic< T, typename atomics::detail::classify< T >::type > base_type;
    typedef typename base_type::value_arg_type value_arg_type;

public:
    typedef typename base_type::storage_type storage_type;

public:
    static BOOST_CONSTEXPR_OR_CONST bool is_always_lock_free = base_type::operations::is_always_lock_free;

public:
    BOOST_DEFAULTED_FUNCTION(atomic(), BOOST_NOEXCEPT {})

    // NOTE: The constructor is made explicit because gcc 4.7 complains that
    //       operator=(value_arg_type) is considered ambiguous with operator=(atomic const&)
    //       in assignment expressions, even though conversion to atomic<> is less preferred
    //       than conversion to value_arg_type.
    BOOST_FORCEINLINE explicit BOOST_CONSTEXPR atomic(value_arg_type v) BOOST_NOEXCEPT : base_type(v) {}

    BOOST_FORCEINLINE value_type operator= (value_arg_type v) volatile BOOST_NOEXCEPT
    {
        this->store(v);
        return v;
    }

    BOOST_FORCEINLINE operator value_type() volatile const BOOST_NOEXCEPT
    {
        return this->load();
    }

    BOOST_FORCEINLINE storage_type& storage() BOOST_NOEXCEPT { return this->m_storage.value; }
    BOOST_FORCEINLINE storage_type volatile& storage() volatile BOOST_NOEXCEPT { return this->m_storage.value; }
    BOOST_FORCEINLINE storage_type const& storage() const BOOST_NOEXCEPT { return this->m_storage.value; }
    BOOST_FORCEINLINE storage_type const volatile& storage() const volatile BOOST_NOEXCEPT { return this->m_storage.value; }

    BOOST_DELETED_FUNCTION(atomic(atomic const&))
    BOOST_DELETED_FUNCTION(atomic& operator= (atomic const&))
    BOOST_DELETED_FUNCTION(atomic& operator= (atomic const&) volatile)
};

template< typename T >
BOOST_CONSTEXPR_OR_CONST bool atomic< T >::is_always_lock_free;

typedef atomic< char > atomic_char;
typedef atomic< unsigned char > atomic_uchar;
typedef atomic< signed char > atomic_schar;
typedef atomic< uint8_t > atomic_uint8_t;
typedef atomic< int8_t > atomic_int8_t;
typedef atomic< unsigned short > atomic_ushort;
typedef atomic< short > atomic_short;
typedef atomic< uint16_t > atomic_uint16_t;
typedef atomic< int16_t > atomic_int16_t;
typedef atomic< unsigned int > atomic_uint;
typedef atomic< int > atomic_int;
typedef atomic< uint32_t > atomic_uint32_t;
typedef atomic< int32_t > atomic_int32_t;
typedef atomic< unsigned long > atomic_ulong;
typedef atomic< long > atomic_long;
typedef atomic< uint64_t > atomic_uint64_t;
typedef atomic< int64_t > atomic_int64_t;
#ifdef BOOST_HAS_LONG_LONG
typedef atomic< boost::ulong_long_type > atomic_ullong;
typedef atomic< boost::long_long_type > atomic_llong;
#endif
typedef atomic< void* > atomic_address;
typedef atomic< bool > atomic_bool;
typedef atomic< wchar_t > atomic_wchar_t;
#if !defined(BOOST_NO_CXX11_CHAR16_T)
typedef atomic< char16_t > atomic_char16_t;
#endif
#if !defined(BOOST_NO_CXX11_CHAR32_T)
typedef atomic< char32_t > atomic_char32_t;
#endif

typedef atomic< int_least8_t > atomic_int_least8_t;
typedef atomic< uint_least8_t > atomic_uint_least8_t;
typedef atomic< int_least16_t > atomic_int_least16_t;
typedef atomic< uint_least16_t > atomic_uint_least16_t;
typedef atomic< int_least32_t > atomic_int_least32_t;
typedef atomic< uint_least32_t > atomic_uint_least32_t;
typedef atomic< int_least64_t > atomic_int_least64_t;
typedef atomic< uint_least64_t > atomic_uint_least64_t;
typedef atomic< int_fast8_t > atomic_int_fast8_t;
typedef atomic< uint_fast8_t > atomic_uint_fast8_t;
typedef atomic< int_fast16_t > atomic_int_fast16_t;
typedef atomic< uint_fast16_t > atomic_uint_fast16_t;
typedef atomic< int_fast32_t > atomic_int_fast32_t;
typedef atomic< uint_fast32_t > atomic_uint_fast32_t;
typedef atomic< int_fast64_t > atomic_int_fast64_t;
typedef atomic< uint_fast64_t > atomic_uint_fast64_t;
typedef atomic< intmax_t > atomic_intmax_t;
typedef atomic< uintmax_t > atomic_uintmax_t;

typedef atomic< std::size_t > atomic_size_t;
typedef atomic< std::ptrdiff_t > atomic_ptrdiff_t;

#if defined(BOOST_HAS_INTPTR_T)
typedef atomic< intptr_t > atomic_intptr_t;
typedef atomic< uintptr_t > atomic_uintptr_t;
#endif

} // namespace atomics
} // namespace boost

#if defined(BOOST_MSVC)
#pragma warning(pop)
#endif

#endif // BOOST_ATOMIC_DETAIL_ATOMIC_TEMPLATE_HPP_INCLUDED_

license: mit


code:
/*
 * 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) 2012 Tim Blechmann
 * Copyright (c) 2013 - 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/bitwise_cast.hpp
 *
 * This header defines \c bitwise_cast used to convert between storage and value types
 */

#ifndef BOOST_ATOMIC_DETAIL_BITWISE_CAST_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_BITWISE_CAST_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>
#if !defined(BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCPY)
#include <cstring>
#endif

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

namespace boost {
namespace atomics {
namespace detail {

template< typename To, typename From >
BOOST_FORCEINLINE To bitwise_cast(From const& from) BOOST_NOEXCEPT
{
    struct
    {
        To to;
    }
    value = {};
    BOOST_ATOMIC_DETAIL_MEMCPY
    (
        &reinterpret_cast< char& >(value.to),
        &reinterpret_cast< const char& >(from),
        (sizeof(From) < sizeof(To) ? sizeof(From) : sizeof(To))
    );
    return value.to;
}

} // namespace detail
} // namespace atomics
} // namespace boost

#endif // BOOST_ATOMIC_DETAIL_BITWISE_CAST_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_alpha.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_ALPHA_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_ALPHA_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#define BOOST_ATOMIC_INT64_LOCK_FREE 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_ALPHA_HPP_INCLUDED_


code:
/*
 * 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) 2009 Phil Endecott
 * Copyright (c) 2013 Tim Blechmann
 * ARM Code by Phil Endecott, based on other architectures.
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_arm.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_ARM_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_ARM_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if !(defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__))
// ARMv7 and later have dmb instruction
#define BOOST_ATOMIC_DETAIL_ARM_HAS_DMB 1
#endif

#if !(defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6Z__))
// ARMv6k and ARMv7 have 8 and 16 ldrex/strex variants
#define BOOST_ATOMIC_DETAIL_ARM_HAS_LDREXB_STREXB 1
#define BOOST_ATOMIC_DETAIL_ARM_HAS_LDREXH_STREXH 1
#if !(((defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)) && defined(__thumb__)) || defined(__ARM_ARCH_7M__))
// ARMv6k and ARMv7 except ARMv7-M have 64-bit ldrex/strex variants.
// Unfortunately, GCC (at least 4.7.3 on Ubuntu) does not allocate register pairs properly when targeting ARMv6k Thumb,
// which is required for ldrexd/strexd instructions, so we disable 64-bit support. When targeting ARMv6k ARM
// or ARMv7 (both ARM and Thumb 2) it works as expected.
#define BOOST_ATOMIC_DETAIL_ARM_HAS_LDREXD_STREXD 1
#endif
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#if defined(BOOST_ATOMIC_DETAIL_ARM_HAS_LDREXD_STREXD)
#define BOOST_ATOMIC_INT64_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_GCC_ARM_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_atomic.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/int_sizes.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(__i386__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
#endif

#if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
#endif

#if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) && (defined(BOOST_HAS_INT128) || !defined(BOOST_NO_ALIGNMENT))
#define BOOST_ATOMIC_INT128_LOCK_FREE 2
#else
#define BOOST_ATOMIC_INT128_LOCK_FREE 0
#endif

#if __GCC_ATOMIC_LLONG_LOCK_FREE == 2
#define BOOST_ATOMIC_LLONG_LOCK_FREE 2
#else
#define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT128_LOCK_FREE
#endif

#if __GCC_ATOMIC_LONG_LOCK_FREE == 2
#define BOOST_ATOMIC_LONG_LOCK_FREE 2
#else
#define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
#endif

#if __GCC_ATOMIC_INT_LOCK_FREE == 2
#define BOOST_ATOMIC_INT_LOCK_FREE 2
#else
#define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
#endif

#if __GCC_ATOMIC_SHORT_LOCK_FREE == 2
#define BOOST_ATOMIC_SHORT_LOCK_FREE 2
#else
#define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
#endif

#if __GCC_ATOMIC_CHAR_LOCK_FREE == 2
#define BOOST_ATOMIC_CHAR_LOCK_FREE 2
#else
#define BOOST_ATOMIC_CHAR_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
#endif

#if __GCC_ATOMIC_POINTER_LOCK_FREE == 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2
#else
#define BOOST_ATOMIC_POINTER_LOCK_FREE 0
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE BOOST_ATOMIC_CHAR_LOCK_FREE

#if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 2
#define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 2
#define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 2
#define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 2
#define BOOST_ATOMIC_INT16_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
#else
#define BOOST_ATOMIC_INT16_LOCK_FREE 0
#endif

#if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 4
#define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 4
#define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 4
#define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 4
#define BOOST_ATOMIC_INT32_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
#else
#define BOOST_ATOMIC_INT32_LOCK_FREE 0
#endif

#if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 8
#define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_SHORT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 8
#define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_INT_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 8
#define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_LONG_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 8
#define BOOST_ATOMIC_INT64_LOCK_FREE BOOST_ATOMIC_LLONG_LOCK_FREE
#else
#define BOOST_ATOMIC_INT64_LOCK_FREE 0
#endif

#if __GCC_ATOMIC_WCHAR_T_LOCK_FREE == 2
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 2
#elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 8
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 4
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 2
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
#elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 1
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
#else
#define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 0
#endif

#define BOOST_ATOMIC_CHAR32_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
#define BOOST_ATOMIC_CHAR16_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_ppc.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_PPC_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_PPC_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#if defined(__powerpc64__) || defined(__PPC64__)
#define BOOST_ATOMIC_INT64_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_GCC_PPC_HPP_INCLUDED_


code:
/*
 * 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) 2010 Helge Bahmann
 * Copyright (c) 2013 Tim Blechmann
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_sparc.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_SPARC_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_SPARC_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#define BOOST_ATOMIC_INT64_LOCK_FREE 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_SPARC_HPP_INCLUDED_


code:
/*
 * 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) 2011 Helge Bahmann
 * Copyright (c) 2013 Tim Blechmann
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_sync.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_SYNC_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_SYNC_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(__i386__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
#endif

#if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
#endif

#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#endif
#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#endif
#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#endif
#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8)\
    || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_INT64_LOCK_FREE 2
#endif
#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_INT128_LOCK_FREE 2
#endif

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_SYNC_HPP_INCLUDED_


code:
/*
 * 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) 2012 Tim Blechmann
 * Copyright (c) 2013 - 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_gcc_x86.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_GCC_X86_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_GCC_X86_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(__GNUC__)

#if defined(__i386__) &&\
    (\
        defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) ||\
        defined(__i586__) || defined(__i686__) || defined(__pentium4__) || defined(__nocona__) || defined(__core2__) || defined(__corei7__) ||\
        defined(__k6__) || defined(__athlon__) || defined(__k8__) || defined(__amdfam10__) || defined(__bdver1__) || defined(__bdver2__) || defined(__bdver3__) || defined(__btver1__) || defined(__btver2__)\
    )
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
#endif

#if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
#endif

#if defined(__x86_64__) || defined(__SSE2__)
// Use mfence only if SSE2 is available
#define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
#endif

#else // defined(__GNUC__)

#if defined(__i386__) && !defined(BOOST_ATOMIC_NO_CMPXCHG8B)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
#endif

#if defined(__x86_64__) && !defined(BOOST_ATOMIC_NO_CMPXCHG16B)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
#endif

#if !defined(BOOST_ATOMIC_NO_MFENCE)
#define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
#endif

#endif // defined(__GNUC__)

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#if defined(__x86_64__) || defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B)
#define BOOST_ATOMIC_INT64_LOCK_FREE 2
#endif
#if defined(BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B) && (defined(BOOST_HAS_INT128) || !defined(BOOST_NO_ALIGNMENT))
#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_GCC_X86_HPP_INCLUDED_


code:
/*
 * 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, 2011 Helge Bahmann
 * Copyright (c) 2009 Phil Endecott
 * Copyright (c) 2013 Tim Blechmann
 * Linux-specific code by Phil Endecott
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/caps_linux_arm.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_LINUX_ARM_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_LINUX_ARM_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_LINUX_ARM_HPP_INCLUDED_


code:
/*
 * 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_msvc_arm.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_MSVC_ARM_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_MSVC_ARM_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#define BOOST_ATOMIC_INT64_LOCK_FREE 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_MSVC_ARM_HPP_INCLUDED_


code:
/*
 * 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_msvc_x86.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_MSVC_X86_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_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 _MSC_VER >= 1500 && defined(_M_AMD64) && !defined(BOOST_ATOMIC_NO_CMPXCHG16B)
#define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
#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) && (defined(BOOST_HAS_INT128) || !defined(BOOST_NO_ALIGNMENT))
#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_MSVC_X86_HPP_INCLUDED_


code:
/*
 * 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_windows.hpp
 *
 * This header defines feature capabilities macros
 */

#ifndef BOOST_ATOMIC_DETAIL_CAPS_WINDOWS_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CAPS_WINDOWS_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#define BOOST_ATOMIC_INT8_LOCK_FREE 2
#define BOOST_ATOMIC_INT16_LOCK_FREE 2
#define BOOST_ATOMIC_INT32_LOCK_FREE 2
#define BOOST_ATOMIC_POINTER_LOCK_FREE 2

#define BOOST_ATOMIC_THREAD_FENCE 2
#define BOOST_ATOMIC_SIGNAL_FENCE 2

#endif // BOOST_ATOMIC_DETAIL_CAPS_WINDOWS_HPP_INCLUDED_


code:
/*
 * 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) 2012 Hartmut Kaiser
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/config.hpp
 *
 * This header defines configuraion macros for Boost.Atomic
 */

#ifndef BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_

#include <boost/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(__has_builtin)
#if __has_builtin(__builtin_memcpy)
#define BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCPY
#endif
#if __has_builtin(__builtin_memcmp)
#define BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCMP
#endif
#elif defined(BOOST_GCC)
#define BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCPY
#define BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCMP
#endif

#if defined(BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCPY)
#define BOOST_ATOMIC_DETAIL_MEMCPY __builtin_memcpy
#else
#define BOOST_ATOMIC_DETAIL_MEMCPY std::memcpy
#endif

#if defined(BOOST_ATOMIC_DETAIL_HAS_BUILTIN_MEMCMP)
#define BOOST_ATOMIC_DETAIL_MEMCMP __builtin_memcmp
#else
#define BOOST_ATOMIC_DETAIL_MEMCMP std::memcmp
#endif

#if defined(__CUDACC__)
// nvcc does not support alternatives in asm statement constraints
#define BOOST_ATOMIC_DETAIL_NO_ASM_CONSTRAINT_ALTERNATIVES
// nvcc does not support condition code register ("cc") clobber in asm statements
#define BOOST_ATOMIC_DETAIL_NO_ASM_CLOBBER_CC
#endif

#if !defined(BOOST_ATOMIC_DETAIL_NO_ASM_CLOBBER_CC)
#define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC "cc"
#define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC_COMMA "cc",
#else
#define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
#define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC_COMMA
#endif

#if ((defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)) && (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 403)) ||\
    defined(__SUNPRO_CC)
// This macro indicates we're using older binutils that don't support implied zero displacements for memory opereands,
// making code like this invalid:
//   movl 4+(%%edx), %%eax
#define BOOST_ATOMIC_DETAIL_NO_ASM_IMPLIED_ZERO_DISPLACEMENTS
#endif

#if defined(__clang__) || (defined(BOOST_GCC) && (BOOST_GCC+0) < 40500) || defined(__SUNPRO_CC)
// This macro indicates that the compiler does not support allocating rax:rdx register pairs ("A") in asm blocks
#define BOOST_ATOMIC_DETAIL_NO_ASM_RAX_RDX_PAIRS
#endif

#endif // BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/int_sizes.hpp
 *
 * This header defines macros for testing buitin integer type sizes
 */

#ifndef BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

// GCC and compatible compilers define internal macros with builtin type traits
#if defined(__SIZEOF_SHORT__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT __SIZEOF_SHORT__
#endif
#if defined(__SIZEOF_INT__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_INT __SIZEOF_INT__
#endif
#if defined(__SIZEOF_LONG__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_LONG __SIZEOF_LONG__
#endif
#if defined(__SIZEOF_LONG_LONG__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG __SIZEOF_LONG_LONG__
#endif
#if defined(__SIZEOF_WCHAR_T__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T __SIZEOF_WCHAR_T__
#endif
#if defined(__SIZEOF_POINTER__)
#define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER __SIZEOF_POINTER__
#elif defined(_MSC_VER)
#if defined(_M_AMD64) || defined(_M_IA64)
#define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 8
#else
#define BOOST_ATOMIC_DETAIL_SIZEOF_POINTER 4
#endif
#endif

#if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\
    !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG)

// Try to deduce sizes from limits
#include <limits.h>
#include <boost/cstdint.hpp>

#if (USHRT_MAX + 0) == 0xff
#define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 1
#elif (USHRT_MAX + 0) == 0xffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 2
#elif (USHRT_MAX + 0) == 0xffffffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 4
#elif (USHRT_MAX + 0) == UINT64_C(0xffffffffffffffff)
#define BOOST_ATOMIC_DETAIL_SIZEOF_SHORT 8
#endif

#if (UINT_MAX + 0) == 0xff
#define BOOST_ATOMIC_DETAIL_SIZEOF_INT 1
#elif (UINT_MAX + 0) == 0xffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_INT 2
#elif (UINT_MAX + 0) == 0xffffffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_INT 4
#elif (UINT_MAX + 0) == UINT64_C(0xffffffffffffffff)
#define BOOST_ATOMIC_DETAIL_SIZEOF_INT 8
#endif

#if (ULONG_MAX + 0) == 0xff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 1
#elif (ULONG_MAX + 0) == 0xffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 2
#elif (ULONG_MAX + 0) == 0xffffffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 4
#elif (ULONG_MAX + 0) == UINT64_C(0xffffffffffffffff)
#define BOOST_ATOMIC_DETAIL_SIZEOF_LONG 8
#endif

#if defined(__hpux) // HP-UX's value of ULONG_LONG_MAX is unusable in preprocessor expressions
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8
#else

// The list of the non-standard macros (the ones except ULLONG_MAX) is taken from cstdint.hpp
#if defined(ULLONG_MAX)
#define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULLONG_MAX
#elif defined(ULONG_LONG_MAX)
#define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONG_LONG_MAX
#elif defined(ULONGLONG_MAX)
#define BOOST_ATOMIC_DETAIL_ULLONG_MAX ULONGLONG_MAX
#elif defined(_LLONG_MAX) // strangely enough, this one seems to be holding the limit for the unsigned integer
#define BOOST_ATOMIC_DETAIL_ULLONG_MAX _LLONG_MAX
#endif

#if (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 1
#elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 2
#elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == 0xffffffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 4
#elif (BOOST_ATOMIC_DETAIL_ULLONG_MAX + 0) == UINT64_C(0xffffffffffffffff)
#define BOOST_ATOMIC_DETAIL_SIZEOF_LLONG 8
#endif

#endif // defined(__hpux)

#endif

#if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T)

#include <wchar.h>
#include <boost/cstdint.hpp>

 #if defined(_MSC_VER) && ( _MSC_VER <= 1310 || defined(UNDER_CE) && _MSC_VER <= 1500 )
// MSVC 7.1 and MSVC 8 (arm) define WCHAR_MAX to a value not suitable for constant expressions
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2
#elif (WCHAR_MAX + 0) == 0xff || (WCHAR_MAX + 0) == 0x7f
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 1
#elif (WCHAR_MAX + 0) == 0xffff || (WCHAR_MAX + 0) == 0x7fff
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 2
#elif (WCHAR_MAX + 0) == 0xffffffff || (WCHAR_MAX + 0) == 0x7fffffff
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 4
#elif (WCHAR_MAX + 0) == UINT64_C(0xffffffffffffffff) || (WCHAR_MAX + 0) == INT64_C(0x7fffffffffffffff)
#define BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T 8
#endif
#endif

#if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_SHORT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_INT) ||\
    !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LLONG) ||\
    !defined(BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T)
#error Boost.Atomic: Failed to determine builtin integer sizes, the target platform is not supported. Please, report to the developers.
#endif

#endif // BOOST_ATOMIC_DETAIL_INT_SIZES_HPP_INCLUDED_


code:
#ifndef BOOST_ATOMIC_DETAIL_INTERLOCKED_HPP
#define BOOST_ATOMIC_DETAIL_INTERLOCKED_HPP

//  Copyright (c) 2009 Helge Bahmann
//  Copyright (c) 2012 - 2014 Andrey Semashev
//
//  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)

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#if defined(_WIN32_WCE)

#if _WIN32_WCE >= 0x600

extern "C" long __cdecl _InterlockedCompareExchange( long volatile *, long, long );
extern "C" long __cdecl _InterlockedExchangeAdd( long volatile *, long );
extern "C" long __cdecl _InterlockedExchange( long volatile *, long );

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) _InterlockedCompareExchange((long*)(dest), exchange, compare)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) _InterlockedExchangeAdd((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) _InterlockedExchange((long*)(dest), (long)(newval))

#else // _WIN32_WCE >= 0x600

extern "C" long __cdecl InterlockedCompareExchange( long*, long, long );
extern "C" long __cdecl InterlockedExchangeAdd( long*, long );
extern "C" long __cdecl InterlockedExchange( long*, long );

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) InterlockedCompareExchange((long*)(dest), exchange, compare)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) InterlockedExchangeAdd((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) InterlockedExchange((long*)(dest), (long)(newval))

#endif // _WIN32_WCE >= 0x600

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) ((void*)BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE((long*)(dest), (long)(exchange), (long)(compare)))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, exchange) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE((long*)(dest), (long)(exchange)))

#elif defined(_MSC_VER) && _MSC_VER >= 1310

#if _MSC_VER < 1400

extern "C" long __cdecl _InterlockedCompareExchange( long volatile *, long, long );
extern "C" long __cdecl _InterlockedExchangeAdd( long volatile *, long );
extern "C" long __cdecl _InterlockedExchange( long volatile *, long );

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange)
#pragma intrinsic(_InterlockedExchangeAdd)
#pragma intrinsic(_InterlockedExchange)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) _InterlockedCompareExchange((long*)(dest), exchange, compare)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) _InterlockedExchangeAdd((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) _InterlockedExchange((long*)(dest), (long)(newval))

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) ((void*)BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE((long*)(dest), (long)(exchange), (long)(compare)))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, exchange) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE((long*)(dest), (long)(exchange)))

#else // _MSC_VER < 1400

#include <intrin.h>

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange)
#pragma intrinsic(_InterlockedExchangeAdd)
#pragma intrinsic(_InterlockedExchange)
#pragma intrinsic(_InterlockedAnd)
#pragma intrinsic(_InterlockedOr)
#pragma intrinsic(_InterlockedXor)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) _InterlockedCompareExchange((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) _InterlockedExchangeAdd((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) _InterlockedExchange((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_AND(dest, arg) _InterlockedAnd((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR(dest, arg) _InterlockedOr((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR(dest, arg) _InterlockedXor((long*)(dest), (long)(arg))

#if (defined(_M_IX86) && _M_IX86 >= 500) || defined(_M_AMD64) || defined(_M_IA64)
#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange64)
#endif
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64(dest, exchange, compare) _InterlockedCompareExchange64((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#endif

#if _MSC_VER >= 1500 && defined(_M_AMD64)
#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange128)
#endif
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE128(dest, exchange, compare) _InterlockedCompareExchange128((__int64*)(dest), ((const __int64*)(&exchange))[1], ((const __int64*)(&exchange))[0], (__int64*)(compare))
#endif

#if _MSC_VER >= 1600

// MSVC 2010 and later provide intrinsics for 8 and 16 bit integers.
// Note that for each bit count these macros must be either all defined or all not defined.
// Otherwise atomic<> operations will be implemented inconsistently.

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange8)
#pragma intrinsic(_InterlockedExchangeAdd8)
#pragma intrinsic(_InterlockedExchange8)
#pragma intrinsic(_InterlockedAnd8)
#pragma intrinsic(_InterlockedOr8)
#pragma intrinsic(_InterlockedXor8)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8(dest, exchange, compare) _InterlockedCompareExchange8((char*)(dest), (char)(exchange), (char)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8(dest, addend) _InterlockedExchangeAdd8((char*)(dest), (char)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE8(dest, newval) _InterlockedExchange8((char*)(dest), (char)(newval))
#define BOOST_ATOMIC_INTERLOCKED_AND8(dest, arg) _InterlockedAnd8((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR8(dest, arg) _InterlockedOr8((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR8(dest, arg) _InterlockedXor8((char*)(dest), (char)(arg))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange16)
#pragma intrinsic(_InterlockedExchangeAdd16)
#pragma intrinsic(_InterlockedExchange16)
#pragma intrinsic(_InterlockedAnd16)
#pragma intrinsic(_InterlockedOr16)
#pragma intrinsic(_InterlockedXor16)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16(dest, exchange, compare) _InterlockedCompareExchange16((short*)(dest), (short)(exchange), (short)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16(dest, addend) _InterlockedExchangeAdd16((short*)(dest), (short)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE16(dest, newval) _InterlockedExchange16((short*)(dest), (short)(newval))
#define BOOST_ATOMIC_INTERLOCKED_AND16(dest, arg) _InterlockedAnd16((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR16(dest, arg) _InterlockedOr16((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR16(dest, arg) _InterlockedXor16((short*)(dest), (short)(arg))

#endif // _MSC_VER >= 1600

#if defined(_M_AMD64) || defined(_M_IA64)

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedExchangeAdd64)
#pragma intrinsic(_InterlockedExchange64)
#pragma intrinsic(_InterlockedAnd64)
#pragma intrinsic(_InterlockedOr64)
#pragma intrinsic(_InterlockedXor64)
#endif

#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, addend) _InterlockedExchangeAdd64((__int64*)(dest), (__int64)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(dest, newval) _InterlockedExchange64((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_AND64(dest, arg) _InterlockedAnd64((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR64(dest, arg) _InterlockedOr64((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR64(dest, arg) _InterlockedXor64((__int64*)(dest), (__int64)(arg))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchangePointer)
#pragma intrinsic(_InterlockedExchangePointer)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) _InterlockedCompareExchangePointer((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) _InterlockedExchangePointer((void**)(dest), (void*)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64((long*)(dest), byte_offset))

#elif defined(_M_IX86)

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) ((void*)_InterlockedCompareExchange((long*)(dest), (long)(exchange), (long)(compare)))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) ((void*)_InterlockedExchange((long*)(dest), (long)(newval)))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD((long*)(dest), byte_offset))

#endif

#if _MSC_VER >= 1700 && defined(_M_ARM)

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedExchangeAdd64)
#pragma intrinsic(_InterlockedExchange64)
#pragma intrinsic(_InterlockedAnd64)
#pragma intrinsic(_InterlockedOr64)
#pragma intrinsic(_InterlockedXor64)
#endif

#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, addend) _InterlockedExchangeAdd64((__int64*)(dest), (__int64)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(dest, newval) _InterlockedExchange64((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_AND64(dest, arg) _InterlockedAnd64((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR64(dest, arg) _InterlockedOr64((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR64(dest, arg) _InterlockedXor64((__int64*)(dest), (__int64)(arg))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedCompareExchange8_nf)
#pragma intrinsic(_InterlockedCompareExchange8_acq)
#pragma intrinsic(_InterlockedCompareExchange8_rel)
#pragma intrinsic(_InterlockedCompareExchange16_nf)
#pragma intrinsic(_InterlockedCompareExchange16_acq)
#pragma intrinsic(_InterlockedCompareExchange16_rel)
#pragma intrinsic(_InterlockedCompareExchange_nf)
#pragma intrinsic(_InterlockedCompareExchange_acq)
#pragma intrinsic(_InterlockedCompareExchange_rel)
#pragma intrinsic(_InterlockedCompareExchange64)
#pragma intrinsic(_InterlockedCompareExchange64_nf)
#pragma intrinsic(_InterlockedCompareExchange64_acq)
#pragma intrinsic(_InterlockedCompareExchange64_rel)
#pragma intrinsic(_InterlockedCompareExchangePointer)
#pragma intrinsic(_InterlockedCompareExchangePointer_nf)
#pragma intrinsic(_InterlockedCompareExchangePointer_acq)
#pragma intrinsic(_InterlockedCompareExchangePointer_rel)
#endif

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_RELAXED(dest, exchange, compare) _InterlockedCompareExchange8_nf((char*)(dest), (char)(exchange), (char)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_ACQUIRE(dest, exchange, compare) _InterlockedCompareExchange8_acq((char*)(dest), (char)(exchange), (char)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_RELEASE(dest, exchange, compare) _InterlockedCompareExchange8_rel((char*)(dest), (char)(exchange), (char)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_RELAXED(dest, exchange, compare) _InterlockedCompareExchange16_nf((short*)(dest), (short)(exchange), (short)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_ACQUIRE(dest, exchange, compare) _InterlockedCompareExchange16_acq((short*)(dest), (short)(exchange), (short)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_RELEASE(dest, exchange, compare) _InterlockedCompareExchange16_rel((short*)(dest), (short)(exchange), (short)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_RELAXED(dest, exchange, compare) _InterlockedCompareExchange_nf((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_ACQUIRE(dest, exchange, compare) _InterlockedCompareExchange_acq((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_RELEASE(dest, exchange, compare) _InterlockedCompareExchange_rel((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64(dest, exchange, compare) _InterlockedCompareExchange64((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_RELAXED(dest, exchange, compare) _InterlockedCompareExchange64_nf((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_ACQUIRE(dest, exchange, compare) _InterlockedCompareExchange64_acq((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_RELEASE(dest, exchange, compare) _InterlockedCompareExchange64_rel((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) _InterlockedCompareExchangePointer((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER_RELAXED(dest, exchange, compare) _InterlockedCompareExchangePointer_nf((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER_ACQUIRE(dest, exchange, compare) _InterlockedCompareExchangePointer_acq((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER_RELEASE(dest, exchange, compare) _InterlockedCompareExchangePointer_rel((void**)(dest), (void*)(exchange), (void*)(compare))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedExchangeAdd8_nf)
#pragma intrinsic(_InterlockedExchangeAdd8_acq)
#pragma intrinsic(_InterlockedExchangeAdd8_rel)
#pragma intrinsic(_InterlockedExchangeAdd16_nf)
#pragma intrinsic(_InterlockedExchangeAdd16_acq)
#pragma intrinsic(_InterlockedExchangeAdd16_rel)
#pragma intrinsic(_InterlockedExchangeAdd_nf)
#pragma intrinsic(_InterlockedExchangeAdd_acq)
#pragma intrinsic(_InterlockedExchangeAdd_rel)
#pragma intrinsic(_InterlockedExchangeAdd64_nf)
#pragma intrinsic(_InterlockedExchangeAdd64_acq)
#pragma intrinsic(_InterlockedExchangeAdd64_rel)
#endif

#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_RELAXED(dest, addend) _InterlockedExchangeAdd8_nf((char*)(dest), (char)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_ACQUIRE(dest, addend) _InterlockedExchangeAdd8_acq((char*)(dest), (char)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_RELEASE(dest, addend) _InterlockedExchangeAdd8_rel((char*)(dest), (char)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_RELAXED(dest, addend) _InterlockedExchangeAdd16_nf((short*)(dest), (short)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_ACQUIRE(dest, addend) _InterlockedExchangeAdd16_acq((short*)(dest), (short)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_RELEASE(dest, addend) _InterlockedExchangeAdd16_rel((short*)(dest), (short)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELAXED(dest, addend) _InterlockedExchangeAdd_nf((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_ACQUIRE(dest, addend) _InterlockedExchangeAdd_acq((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELEASE(dest, addend) _InterlockedExchangeAdd_rel((long*)(dest), (long)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_RELAXED(dest, addend) _InterlockedExchangeAdd64_nf((__int64*)(dest), (__int64)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_ACQUIRE(dest, addend) _InterlockedExchangeAdd64_acq((__int64*)(dest), (__int64)(addend))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_RELEASE(dest, addend) _InterlockedExchangeAdd64_rel((__int64*)(dest), (__int64)(addend))

#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD((long*)(dest), byte_offset))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER_RELAXED(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELAXED((long*)(dest), byte_offset))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER_ACQUIRE(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_ACQUIRE((long*)(dest), byte_offset))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER_RELEASE(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELEASE((long*)(dest), byte_offset))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedExchange8_nf)
#pragma intrinsic(_InterlockedExchange8_acq)
#pragma intrinsic(_InterlockedExchange16_nf)
#pragma intrinsic(_InterlockedExchange16_acq)
#pragma intrinsic(_InterlockedExchange_nf)
#pragma intrinsic(_InterlockedExchange_acq)
#pragma intrinsic(_InterlockedExchange64_nf)
#pragma intrinsic(_InterlockedExchange64_acq)
#pragma intrinsic(_InterlockedExchangePointer)
#pragma intrinsic(_InterlockedExchangePointer_nf)
#pragma intrinsic(_InterlockedExchangePointer_acq)
#if _MSC_VER >= 1800
#pragma intrinsic(_InterlockedExchange8_rel)
#pragma intrinsic(_InterlockedExchange16_rel)
#pragma intrinsic(_InterlockedExchange_rel)
#pragma intrinsic(_InterlockedExchange64_rel)
#pragma intrinsic(_InterlockedExchangePointer_rel)
#endif
#endif

#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_RELAXED(dest, newval) _InterlockedExchange8_nf((char*)(dest), (char)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_ACQUIRE(dest, newval) _InterlockedExchange8_acq((char*)(dest), (char)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_RELAXED(dest, newval) _InterlockedExchange16_nf((short*)(dest), (short)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_ACQUIRE(dest, newval) _InterlockedExchange16_acq((short*)(dest), (short)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_RELAXED(dest, newval) _InterlockedExchange_nf((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ACQUIRE(dest, newval) _InterlockedExchange_acq((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_RELAXED(dest, newval) _InterlockedExchange64_nf((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_ACQUIRE(dest, newval) _InterlockedExchange64_acq((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) _InterlockedExchangePointer((void**)(dest), (void*)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER_RELAXED(dest, newval) _InterlockedExchangePointer_nf((void**)(dest), (void*)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER_ACQUIRE(dest, newval) _InterlockedExchangePointer_acq((void**)(dest), (void*)(newval))

#if _MSC_VER >= 1800
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_RELEASE(dest, newval) _InterlockedExchange8_rel((char*)(dest), (char)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_RELEASE(dest, newval) _InterlockedExchange16_rel((short*)(dest), (short)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_RELEASE(dest, newval) _InterlockedExchange_rel((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_RELEASE(dest, newval) _InterlockedExchange64_rel((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER_RELEASE(dest, newval) _InterlockedExchangePointer_rel((void**)(dest), (void*)(newval))
#else
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_RELEASE(dest, newval) BOOST_ATOMIC_INTERLOCKED_EXCHANGE8(dest, newval)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_RELEASE(dest, newval) BOOST_ATOMIC_INTERLOCKED_EXCHANGE16(dest, newval)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_RELEASE(dest, newval) BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_RELEASE(dest, newval) BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(dest, newval)
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER_RELEASE(dest, newval) BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval)
#endif

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedAnd8_nf)
#pragma intrinsic(_InterlockedAnd8_acq)
#pragma intrinsic(_InterlockedAnd8_rel)
#pragma intrinsic(_InterlockedAnd16_nf)
#pragma intrinsic(_InterlockedAnd16_acq)
#pragma intrinsic(_InterlockedAnd16_rel)
#pragma intrinsic(_InterlockedAnd_nf)
#pragma intrinsic(_InterlockedAnd_acq)
#pragma intrinsic(_InterlockedAnd_rel)
#pragma intrinsic(_InterlockedAnd64_nf)
#pragma intrinsic(_InterlockedAnd64_acq)
#pragma intrinsic(_InterlockedAnd64_rel)
#endif

#define BOOST_ATOMIC_INTERLOCKED_AND8_RELAXED(dest, arg) _InterlockedAnd8_nf((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND8_ACQUIRE(dest, arg) _InterlockedAnd8_acq((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND8_RELEASE(dest, arg) _InterlockedAnd8_rel((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND16_RELAXED(dest, arg) _InterlockedAnd16_nf((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND16_ACQUIRE(dest, arg) _InterlockedAnd16_acq((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND16_RELEASE(dest, arg) _InterlockedAnd16_rel((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND_RELAXED(dest, arg) _InterlockedAnd_nf((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND_ACQUIRE(dest, arg) _InterlockedAnd_acq((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND_RELEASE(dest, arg) _InterlockedAnd_rel((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND64_RELAXED(dest, arg) _InterlockedAnd64_nf((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND64_ACQUIRE(dest, arg) _InterlockedAnd64_acq((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_AND64_RELEASE(dest, arg) _InterlockedAnd64_rel((__int64*)(dest), (__int64)(arg))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedOr8_nf)
#pragma intrinsic(_InterlockedOr8_acq)
#pragma intrinsic(_InterlockedOr8_rel)
#pragma intrinsic(_InterlockedOr16_nf)
#pragma intrinsic(_InterlockedOr16_acq)
#pragma intrinsic(_InterlockedOr16_rel)
#pragma intrinsic(_InterlockedOr_nf)
#pragma intrinsic(_InterlockedOr_acq)
#pragma intrinsic(_InterlockedOr_rel)
#pragma intrinsic(_InterlockedOr64_nf)
#pragma intrinsic(_InterlockedOr64_acq)
#pragma intrinsic(_InterlockedOr64_rel)
#endif

#define BOOST_ATOMIC_INTERLOCKED_OR8_RELAXED(dest, arg) _InterlockedOr8_nf((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR8_ACQUIRE(dest, arg) _InterlockedOr8_acq((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR8_RELEASE(dest, arg) _InterlockedOr8_rel((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR16_RELAXED(dest, arg) _InterlockedOr16_nf((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR16_ACQUIRE(dest, arg) _InterlockedOr16_acq((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR16_RELEASE(dest, arg) _InterlockedOr16_rel((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR_RELAXED(dest, arg) _InterlockedOr_nf((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR_ACQUIRE(dest, arg) _InterlockedOr_acq((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR_RELEASE(dest, arg) _InterlockedOr_rel((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR64_RELAXED(dest, arg) _InterlockedOr64_nf((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR64_ACQUIRE(dest, arg) _InterlockedOr64_acq((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_OR64_RELEASE(dest, arg) _InterlockedOr64_rel((__int64*)(dest), (__int64)(arg))

#if defined(BOOST_MSVC)
#pragma intrinsic(_InterlockedXor8_nf)
#pragma intrinsic(_InterlockedXor8_acq)
#pragma intrinsic(_InterlockedXor8_rel)
#pragma intrinsic(_InterlockedXor16_nf)
#pragma intrinsic(_InterlockedXor16_acq)
#pragma intrinsic(_InterlockedXor16_rel)
#pragma intrinsic(_InterlockedXor_nf)
#pragma intrinsic(_InterlockedXor_acq)
#pragma intrinsic(_InterlockedXor_rel)
#pragma intrinsic(_InterlockedXor64_nf)
#pragma intrinsic(_InterlockedXor64_acq)
#pragma intrinsic(_InterlockedXor64_rel)
#endif

#define BOOST_ATOMIC_INTERLOCKED_XOR8_RELAXED(dest, arg) _InterlockedXor8_nf((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR8_ACQUIRE(dest, arg) _InterlockedXor8_acq((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR8_RELEASE(dest, arg) _InterlockedXor8_rel((char*)(dest), (char)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR16_RELAXED(dest, arg) _InterlockedXor16_nf((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR16_ACQUIRE(dest, arg) _InterlockedXor16_acq((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR16_RELEASE(dest, arg) _InterlockedXor16_rel((short*)(dest), (short)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR_RELAXED(dest, arg) _InterlockedXor_nf((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR_ACQUIRE(dest, arg) _InterlockedXor_acq((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR_RELEASE(dest, arg) _InterlockedXor_rel((long*)(dest), (long)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR64_RELAXED(dest, arg) _InterlockedXor64_nf((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR64_ACQUIRE(dest, arg) _InterlockedXor64_acq((__int64*)(dest), (__int64)(arg))
#define BOOST_ATOMIC_INTERLOCKED_XOR64_RELEASE(dest, arg) _InterlockedXor64_rel((__int64*)(dest), (__int64)(arg))

#endif // _MSC_VER >= 1700 && defined(_M_ARM)

#endif // _MSC_VER < 1400

#else // defined(_MSC_VER) && _MSC_VER >= 1310

#if defined(BOOST_USE_WINDOWS_H)

#include <windows.h>

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) InterlockedCompareExchange((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) InterlockedExchange((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) InterlockedExchangeAdd((long*)(dest), (long)(addend))

#if defined(_WIN64)

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64(dest, exchange, compare) InterlockedCompareExchange64((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(dest, newval) InterlockedExchange64((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, addend) InterlockedExchangeAdd64((__int64*)(dest), (__int64)(addend))

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) InterlockedCompareExchangePointer((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) InterlockedExchangePointer((void**)(dest), (void*)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, byte_offset))

#else // defined(_WIN64)

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) ((void*)BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, byte_offset))

#endif // defined(_WIN64)

#else // defined(BOOST_USE_WINDOWS_H)

#if defined(__MINGW64__)
#define BOOST_ATOMIC_INTERLOCKED_IMPORT
#else
#define BOOST_ATOMIC_INTERLOCKED_IMPORT __declspec(dllimport)
#endif

namespace boost {
namespace atomics {
namespace detail {

extern "C" {

BOOST_ATOMIC_INTERLOCKED_IMPORT long __stdcall InterlockedCompareExchange(long volatile*, long, long);
BOOST_ATOMIC_INTERLOCKED_IMPORT long __stdcall InterlockedExchange(long volatile*, long);
BOOST_ATOMIC_INTERLOCKED_IMPORT long __stdcall InterlockedExchangeAdd(long volatile*, long);

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare) boost::atomics::detail::InterlockedCompareExchange((long*)(dest), (long)(exchange), (long)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval) boost::atomics::detail::InterlockedExchange((long*)(dest), (long)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, addend) boost::atomics::detail::InterlockedExchangeAdd((long*)(dest), (long)(addend))

#if defined(_WIN64)

BOOST_ATOMIC_INTERLOCKED_IMPORT __int64 __stdcall InterlockedCompareExchange64(__int64 volatile*, __int64, __int64);
BOOST_ATOMIC_INTERLOCKED_IMPORT __int64 __stdcall InterlockedExchange64(__int64 volatile*, __int64);
BOOST_ATOMIC_INTERLOCKED_IMPORT __int64 __stdcall InterlockedExchangeAdd64(__int64 volatile*, __int64);

BOOST_ATOMIC_INTERLOCKED_IMPORT void* __stdcall InterlockedCompareExchangePointer(void* volatile *, void*, void*);
BOOST_ATOMIC_INTERLOCKED_IMPORT void* __stdcall InterlockedExchangePointer(void* volatile *, void*);

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64(dest, exchange, compare) boost::atomics::detail::InterlockedCompareExchange64((__int64*)(dest), (__int64)(exchange), (__int64)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(dest, newval) boost::atomics::detail::InterlockedExchange64((__int64*)(dest), (__int64)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, addend) boost::atomics::detail::InterlockedExchangeAdd64((__int64*)(dest), (__int64)(addend))

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) boost::atomics::detail::InterlockedCompareExchangePointer((void**)(dest), (void*)(exchange), (void*)(compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) boost::atomics::detail::InterlockedExchangePointer((void**)(dest), (void*)(newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(dest, byte_offset))

#else // defined(_WIN64)

#define BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_POINTER(dest, exchange, compare) ((void*)BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(dest, exchange, compare))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_POINTER(dest, newval) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE(dest, newval))
#define BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_POINTER(dest, byte_offset) ((void*)BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(dest, byte_offset))

#endif // defined(_WIN64)

} // extern "C"

} // namespace detail
} // namespace atomics
} // namespace boost

#undef BOOST_ATOMIC_INTERLOCKED_IMPORT

#endif // defined(BOOST_USE_WINDOWS_H)

#endif // defined(_MSC_VER)

#endif


code:
/*
 * 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) 2012 Hartmut Kaiser
 * Copyright (c) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/config.hpp
 *
 * This header defines macros for linking with compiled library of Boost.Atomic
 */

#ifndef BOOST_ATOMIC_DETAIL_LINK_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_LINK_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

///////////////////////////////////////////////////////////////////////////////
//  Set up dll import/export options
#if (defined(BOOST_ATOMIC_DYN_LINK) || defined(BOOST_ALL_DYN_LINK)) && \
    !defined(BOOST_ATOMIC_STATIC_LINK)

#if defined(BOOST_ATOMIC_SOURCE)
#define BOOST_ATOMIC_DECL BOOST_SYMBOL_EXPORT
#define BOOST_ATOMIC_BUILD_DLL
#else
#define BOOST_ATOMIC_DECL BOOST_SYMBOL_IMPORT
#endif

#endif // building a shared library

#ifndef BOOST_ATOMIC_DECL
#define BOOST_ATOMIC_DECL
#endif

///////////////////////////////////////////////////////////////////////////////
//  Auto library naming
#if !defined(BOOST_ATOMIC_SOURCE) && !defined(BOOST_ALL_NO_LIB) && \
    !defined(BOOST_ATOMIC_NO_LIB)

#define BOOST_LIB_NAME boost_atomic

// tell the auto-link code to select a dll when required:
#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_ATOMIC_DYN_LINK)
#define BOOST_DYN_LINK
#endif

#include <boost/config/auto_link.hpp>

#endif  // auto-linking disabled

#endif


code:
/*
 * 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) 2011 Helge Bahmann
 * Copyright (c) 2013-2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/lockpool.hpp
 *
 * This header contains declaration of the lockpool used to emulate atomic ops.
 */

#ifndef BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/link.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

namespace boost {
namespace atomics {
namespace detail {

struct lockpool
{
    class scoped_lock
    {
        void* m_lock;

    public:
        explicit BOOST_ATOMIC_DECL scoped_lock(const volatile void* addr) BOOST_NOEXCEPT;
        BOOST_ATOMIC_DECL ~scoped_lock() BOOST_NOEXCEPT;

        BOOST_DELETED_FUNCTION(scoped_lock(scoped_lock const&))
        BOOST_DELETED_FUNCTION(scoped_lock& operator=(scoped_lock const&))
    };

    static BOOST_ATOMIC_DECL void thread_fence() BOOST_NOEXCEPT;
    static BOOST_ATOMIC_DECL void signal_fence() BOOST_NOEXCEPT;
};

} // namespace detail
} // namespace atomics
} // namespace boost

#endif // BOOST_ATOMIC_DETAIL_LOCKPOOL_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/operations.hpp
 *
 * This header defines atomic operations, including the emulated version.
 */

#ifndef BOOST_ATOMIC_DETAIL_OPERATIONS_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_OPERATIONS_HPP_INCLUDED_

#include <boost/atomic/detail/operations_lockfree.hpp>
#include <boost/atomic/detail/ops_emulated.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#endif // BOOST_ATOMIC_DETAIL_OPERATIONS_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/operations_fwd.hpp
 *
 * This header contains forward declaration of the \c operations template.
 */

#ifndef BOOST_ATOMIC_DETAIL_OPERATIONS_FWD_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_OPERATIONS_FWD_HPP_INCLUDED_

#include <cstddef>
#include <boost/atomic/detail/config.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

namespace boost {
namespace atomics {
namespace detail {

template< std::size_t Size, bool Signed >
struct operations;

} // namespace detail
} // namespace atomics
} // namespace boost

#endif // BOOST_ATOMIC_DETAIL_OPERATIONS_FWD_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/operations_lockfree.hpp
 *
 * This header defines lockfree atomic operations.
 */

#ifndef BOOST_ATOMIC_DETAIL_OPERATIONS_LOCKFREE_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_OPERATIONS_LOCKFREE_HPP_INCLUDED_

#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/platform.hpp>

#if !defined(BOOST_ATOMIC_EMULATED)
#include BOOST_ATOMIC_DETAIL_HEADER(boost/atomic/detail/ops_)
#else
#include <boost/atomic/detail/operations_fwd.hpp>
#endif

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

#endif // BOOST_ATOMIC_DETAIL_OPERATIONS_LOCKFREE_HPP_INCLUDED_


code:
/*
 * 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) 2014 Andrey Semashev
 */
/*!
 * \file   atomic/detail/ops_cas_based.hpp
 *
 * This header contains CAS-based implementation of the \c operations template.
 */

#ifndef BOOST_ATOMIC_DETAIL_OPS_CAS_BASED_HPP_INCLUDED_
#define BOOST_ATOMIC_DETAIL_OPS_CAS_BASED_HPP_INCLUDED_

#include <boost/memory_order.hpp>
#include <boost/atomic/detail/config.hpp>
#include <boost/atomic/detail/storage_type.hpp>

#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif

namespace boost {
namespace atomics {
namespace detail {

template< typename Base >
struct cas_based_exchange :
    public Base
{
    typedef typename Base::storage_type storage_type;

    static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, v, order, memory_order_relaxed)) {}
        return old_val;
    }
};

template< typename Base >
struct cas_based_operations :
    public Base
{
    typedef typename Base::storage_type storage_type;

    static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, old_val + v, order, memory_order_relaxed)) {}
        return old_val;
    }

    static BOOST_FORCEINLINE storage_type fetch_sub(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, old_val - v, order, memory_order_relaxed)) {}
        return old_val;
    }

    static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, old_val & v, order, memory_order_relaxed)) {}
        return old_val;
    }

    static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, old_val | v, order, memory_order_relaxed)) {}
        return old_val;
    }

    static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
    {
        storage_type old_val;
        atomics::detail::non_atomic_load(storage, old_val);
        while (!Base::compare_exchange_weak(storage, old_val, old_val ^ v, order, memory_order_relaxed)) {}
        return old_val;
    }

    static BOOST_FORCEINLINE bool test_and_set(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        return !!Base::exchange(storage, (storage_type)1, order);
    }

    static BOOST_FORCEINLINE void clear(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
    {
        Base::store(storage, (storage_type)0, order);
    }
};

} // namespace detail
} // namespace atomics
} // namespace boost

#endif // BOOST_ATOMIC_DETAIL_OPS_CAS_BASED_HPP_INCLUDED_