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123 lines
2.3 KiB
C++
123 lines
2.3 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2005-2016.
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_DETAIL_MPL_HPP
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#define BOOST_INTERPROCESS_DETAIL_MPL_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <cstddef>
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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template <class T, T val>
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struct integral_constant
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{
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static const T value = val;
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typedef integral_constant<T,val> type;
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};
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template< bool C_ >
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struct bool_ : integral_constant<bool, C_>
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{
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static const bool value = C_;
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};
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typedef bool_<true> true_;
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typedef bool_<false> false_;
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typedef true_ true_type;
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typedef false_ false_type;
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typedef char yes_type;
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struct no_type
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{
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char padding[8];
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};
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template <bool B, class T = void>
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struct enable_if_c {
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typedef T type;
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};
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template <class T>
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struct enable_if_c<false, T> {};
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template <class Cond, class T = void>
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struct enable_if : public enable_if_c<Cond::value, T> {};
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template <class Cond, class T = void>
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struct disable_if : public enable_if_c<!Cond::value, T> {};
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template<
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bool C
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, typename T1
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, typename T2
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>
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struct if_c
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{
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typedef T1 type;
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};
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template<
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typename T1
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, typename T2
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>
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struct if_c<false,T1,T2>
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{
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typedef T2 type;
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};
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template<
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typename T1
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, typename T2
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, typename T3
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>
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struct if_
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{
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typedef typename if_c<0 != T1::value, T2, T3>::type type;
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};
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template<std::size_t S>
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struct ls_zeros
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{
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static const std::size_t value = (S & std::size_t(1)) ? 0 : (1u + ls_zeros<(S >> 1u)>::value);
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};
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template<>
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struct ls_zeros<0>
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{
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static const std::size_t value = 0;
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};
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template<>
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struct ls_zeros<1>
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{
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static const std::size_t value = 0;
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};
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} //namespace ipcdetail {
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} //namespace interprocess {
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} //namespace boost {
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#endif //#ifndef BOOST_INTERPROCESS_DETAIL_MPL_HPP
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