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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2014-2014
//
// 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_DETAIL_SIZE_HOLDER_HPP
#define BOOST_INTRUSIVE_DETAIL_SIZE_HOLDER_HPP
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/intrusive/detail/workaround.hpp>
namespace boost {
namespace intrusive {
namespace detail {
template<bool ConstantSize, class SizeType, class Tag = void>
struct size_holder
{
static const bool constant_time_size = ConstantSize;
typedef SizeType size_type;
BOOST_INTRUSIVE_FORCEINLINE SizeType get_size() const
{ return size_; }
BOOST_INTRUSIVE_FORCEINLINE void set_size(SizeType size)
{ size_ = size; }
BOOST_INTRUSIVE_FORCEINLINE void decrement()
{ --size_; }
BOOST_INTRUSIVE_FORCEINLINE void increment()
{ ++size_; }
BOOST_INTRUSIVE_FORCEINLINE void increase(SizeType n)
{ size_ += n; }
BOOST_INTRUSIVE_FORCEINLINE void decrease(SizeType n)
{ size_ -= n; }
SizeType size_;
};
template<class SizeType, class Tag>
struct size_holder<false, SizeType, Tag>
{
static const bool constant_time_size = false;
typedef SizeType size_type;
BOOST_INTRUSIVE_FORCEINLINE size_type get_size() const
{ return 0; }
BOOST_INTRUSIVE_FORCEINLINE void set_size(size_type)
{}
BOOST_INTRUSIVE_FORCEINLINE void decrement()
{}
BOOST_INTRUSIVE_FORCEINLINE void increment()
{}
BOOST_INTRUSIVE_FORCEINLINE void increase(SizeType)
{}
BOOST_INTRUSIVE_FORCEINLINE void decrease(SizeType)
{}
};
} //namespace detail{
} //namespace intrusive{
} //namespace boost{
#endif //BOOST_INTRUSIVE_DETAIL_SIZE_HOLDER_HPP
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