forked from boostorg/unordered
1129 lines
42 KiB
C++
1129 lines
42 KiB
C++
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// Copyright 2005-2011 Daniel James.
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// Copyright 2009 Pablo Halpern.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/unordered for documentation
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#ifndef BOOST_UNORDERED_ALLOCATE_HPP
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#define BOOST_UNORDERED_ALLOCATE_HPP
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#include <boost/config.hpp>
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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 <boost/unordered/detail/fwd.hpp>
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#include <boost/move/move.hpp>
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#include <boost/preprocessor/cat.hpp>
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#include <boost/preprocessor/inc.hpp>
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#include <boost/preprocessor/dec.hpp>
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#include <boost/preprocessor/repetition/enum.hpp>
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#include <boost/preprocessor/repetition/enum_params.hpp>
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#include <boost/preprocessor/repetition/enum_binary_params.hpp>
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#include <boost/preprocessor/repetition/repeat_from_to.hpp>
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#include <boost/type_traits/is_class.hpp>
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#include <boost/type_traits/add_lvalue_reference.hpp>
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#include <boost/tuple/tuple.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <boost/utility/addressof.hpp>
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#include <boost/detail/select_type.hpp>
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#include <boost/assert.hpp>
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#include <utility>
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#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
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#include <tuple>
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#endif
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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#pragma warning(disable:4512) // assignment operator could not be generated.
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#pragma warning(disable:4345) // behavior change: an object of POD type
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// constructed with an initializer of the form ()
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// will be default-initialized.
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#endif
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#define BOOST_UNORDERED_EMPLACE_LIMIT 10
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namespace boost { namespace unordered { namespace detail {
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////////////////////////////////////////////////////////////////////////////
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// Bits and pieces for implementing traits
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template <typename T> typename boost::add_lvalue_reference<T>::type make();
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struct choice9 { typedef char (&type)[9]; };
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struct choice8 : choice9 { typedef char (&type)[8]; };
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struct choice7 : choice8 { typedef char (&type)[7]; };
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struct choice6 : choice7 { typedef char (&type)[6]; };
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struct choice5 : choice6 { typedef char (&type)[5]; };
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struct choice4 : choice5 { typedef char (&type)[4]; };
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struct choice3 : choice4 { typedef char (&type)[3]; };
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struct choice2 : choice3 { typedef char (&type)[2]; };
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struct choice1 : choice2 { typedef char (&type)[1]; };
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choice1 choose();
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typedef choice1::type yes_type;
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typedef choice2::type no_type;
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struct private_type
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{
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private_type const &operator,(int) const;
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};
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template <typename T>
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no_type is_private_type(T const&);
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yes_type is_private_type(private_type const&);
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struct convert_from_anything {
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template <typename T>
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convert_from_anything(T const&);
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};
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////////////////////////////////////////////////////////////////////////////
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// emplace_args
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//
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// Either forwarding variadic arguments, or storing the arguments in
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// emplace_args##n
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#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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#define BOOST_UNORDERED_EMPLACE_TEMPLATE typename... Args
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#define BOOST_UNORDERED_EMPLACE_ARGS BOOST_FWD_REF(Args)... args
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#define BOOST_UNORDERED_EMPLACE_FORWARD boost::forward<Args>(args)...
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#define BOOST_UNORDERED_EMPLACE_ARGS1(a0) a0
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#define BOOST_UNORDERED_EMPLACE_ARGS2(a0, a1) a0, a1
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#define BOOST_UNORDERED_EMPLACE_ARGS3(a0, a1, a2) a0, a1, a2
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#else
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#define BOOST_UNORDERED_EMPLACE_TEMPLATE typename Args
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#define BOOST_UNORDERED_EMPLACE_ARGS Args const& args
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#define BOOST_UNORDERED_EMPLACE_FORWARD args
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#define BOOST_UNORDERED_FWD_PARAM(z, n, a) \
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BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(a, n)
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#define BOOST_UNORDERED_CALL_FORWARD(z, i, a) \
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boost::forward<BOOST_PP_CAT(A,i)>(BOOST_PP_CAT(a,i))
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#define BOOST_UNORDERED_EARGS(z, n, _) \
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template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
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struct BOOST_PP_CAT(emplace_args, n) \
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{ \
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BOOST_PP_REPEAT_##z(n, BOOST_UNORDERED_EARGS_MEMBER, _) \
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BOOST_PP_CAT(emplace_args, n) ( \
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BOOST_PP_ENUM_BINARY_PARAMS_Z(z, n, Arg, b) \
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) : BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_EARGS_INIT, _) \
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{} \
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\
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}; \
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\
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template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
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inline BOOST_PP_CAT(emplace_args, n) < \
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BOOST_PP_ENUM_PARAMS_Z(z, n, A) \
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> create_emplace_args( \
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BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_FWD_PARAM, b) \
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) \
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{ \
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BOOST_PP_CAT(emplace_args, n) < \
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BOOST_PP_ENUM_PARAMS_Z(z, n, A) \
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> e(BOOST_PP_ENUM_PARAMS_Z(z, n, b)); \
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return e; \
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}
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#define BOOST_UNORDERED_EMPLACE_ARGS1 create_emplace_args
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#define BOOST_UNORDERED_EMPLACE_ARGS2 create_emplace_args
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#define BOOST_UNORDERED_EMPLACE_ARGS3 create_emplace_args
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#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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#define BOOST_UNORDERED_EARGS_MEMBER(z, n, _) \
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typedef BOOST_FWD_REF(BOOST_PP_CAT(A, n)) BOOST_PP_CAT(Arg, n); \
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BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
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#define BOOST_UNORDERED_EARGS_INIT(z, n, _) \
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BOOST_PP_CAT(a, n)( \
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boost::forward<BOOST_PP_CAT(A,n)>(BOOST_PP_CAT(b, n)))
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#else
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#define BOOST_UNORDERED_EARGS_MEMBER(z, n, _) \
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typedef typename boost::add_lvalue_reference<BOOST_PP_CAT(A, n)>::type \
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BOOST_PP_CAT(Arg, n); \
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BOOST_PP_CAT(Arg, n) BOOST_PP_CAT(a, n);
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#define BOOST_UNORDERED_EARGS_INIT(z, n, _) \
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BOOST_PP_CAT(a, n)(BOOST_PP_CAT(b, n))
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#endif
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BOOST_PP_REPEAT_FROM_TO(1, BOOST_UNORDERED_EMPLACE_LIMIT, BOOST_UNORDERED_EARGS,
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_)
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#undef BOOST_UNORDERED_DEFINE_EMPLACE_ARGS
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#undef BOOST_UNORDERED_EARGS_MEMBER
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#undef BOOST_UNORDERED_EARGS_INIT
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#endif
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}}}
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////////////////////////////////////////////////////////////////////////////////
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//
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// Pick which version of allocator_traits to use
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//
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// 0 = Own partial implementation
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// 1 = std::allocator_traits
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// 2 = boost::container::allocator_traits
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#if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
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# if defined(__GXX_EXPERIMENTAL_CXX0X__) && \
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(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7))
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# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 0
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# elif defined(BOOST_MSVC)
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# if BOOST_MSVC < 1400
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// Use container's allocator_traits for older versions of Visual
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// C++ as I don't test with them.
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# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 2
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# endif
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# endif
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#endif
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#if !defined(BOOST_UNORDERED_USE_ALLOCATOR_TRAITS)
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# define BOOST_UNORDERED_USE_ALLOCATOR_TRAITS 0
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#endif
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////////////////////////////////////////////////////////////////////////////////
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//
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// Some utilities for implementing allocator_traits, but useful elsewhere so
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// they're always defined.
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#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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# include <type_traits>
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#endif
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namespace boost { namespace unordered { namespace detail {
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////////////////////////////////////////////////////////////////////////////
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// Integral_constrant, true_type, false_type
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//
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// Uses the standard versions if available.
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#if !defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
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using std::integral_constant;
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using std::true_type;
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using std::false_type;
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#else
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template <typename T, T Value>
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struct integral_constant { enum { value = Value }; };
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typedef boost::unordered::detail::integral_constant<bool, true> true_type;
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typedef boost::unordered::detail::integral_constant<bool, false> false_type;
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#endif
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////////////////////////////////////////////////////////////////////////////
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// Explicitly call a destructor
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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#pragma warning(disable:4100) // unreferenced formal parameter
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#endif
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namespace func {
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template <class T>
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inline void destroy(T* x) {
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x->~T();
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}
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}
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#if defined(BOOST_MSVC)
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#pragma warning(pop)
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#endif
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////////////////////////////////////////////////////////////////////////////
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// Expression test mechanism
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//
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// When SFINAE expressions are available, define
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// BOOST_UNORDERED_HAS_FUNCTION which can check if a function call is
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// supported by a class, otherwise define BOOST_UNORDERED_HAS_MEMBER which
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// can detect if a class has the specified member, but not that it has the
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// correct type, this is good enough for a passable impression of
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// allocator_traits.
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#if !defined(BOOST_NO_SFINAE_EXPR)
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template <typename T, unsigned int> struct expr_test;
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template <typename T> struct expr_test<T, sizeof(char)> : T {};
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# define BOOST_UNORDERED_CHECK_EXPRESSION(count, result, expression) \
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template <typename U> \
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static typename boost::unordered::detail::expr_test< \
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BOOST_PP_CAT(choice, result), \
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sizeof(for_expr_test(( \
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(expression), \
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0)))>::type test( \
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BOOST_PP_CAT(choice, count))
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# define BOOST_UNORDERED_DEFAULT_EXPRESSION(count, result) \
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template <typename U> \
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static BOOST_PP_CAT(choice, result)::type test( \
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BOOST_PP_CAT(choice, count))
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# define BOOST_UNORDERED_HAS_FUNCTION(name, thing, args, _) \
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struct BOOST_PP_CAT(has_, name) \
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{ \
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template <typename U> static char for_expr_test(U const&); \
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BOOST_UNORDERED_CHECK_EXPRESSION(1, 1, \
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boost::unordered::detail::make< thing >().name args); \
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BOOST_UNORDERED_DEFAULT_EXPRESSION(2, 2); \
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\
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enum { value = sizeof(test<T>(choose())) == sizeof(choice1::type) };\
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}
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#else
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template <typename T> struct identity { typedef T type; };
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# define BOOST_UNORDERED_CHECK_MEMBER(count, result, name, member) \
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\
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typedef typename boost::unordered::detail::identity<member>::type \
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BOOST_PP_CAT(check, count); \
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\
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template <BOOST_PP_CAT(check, count) e> \
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struct BOOST_PP_CAT(test, count) { \
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typedef BOOST_PP_CAT(choice, result) type; \
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}; \
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\
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template <class U> static typename \
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BOOST_PP_CAT(test, count)<&U::name>::type \
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test(BOOST_PP_CAT(choice, count))
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# define BOOST_UNORDERED_DEFAULT_MEMBER(count, result) \
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template <class U> static BOOST_PP_CAT(choice, result)::type \
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test(BOOST_PP_CAT(choice, count))
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# define BOOST_UNORDERED_HAS_MEMBER(name) \
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struct BOOST_PP_CAT(has_, name) \
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{ \
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struct impl { \
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struct base_mixin { int name; }; \
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struct base : public T, public base_mixin {}; \
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\
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BOOST_UNORDERED_CHECK_MEMBER(1, 1, name, int base_mixin::*); \
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BOOST_UNORDERED_DEFAULT_MEMBER(2, 2); \
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\
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enum { value = sizeof(choice2::type) == \
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sizeof(test<base>(choose())) \
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}; \
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}; \
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\
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enum { value = impl::value }; \
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}
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#endif
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}}}
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////////////////////////////////////////////////////////////////////////////////
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//
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// Allocator traits
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//
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// First our implementation, then later light wrappers around the alternatives
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#if BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 0
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# include <boost/limits.hpp>
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# include <boost/utility/enable_if.hpp>
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# include <boost/pointer_to_other.hpp>
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# if defined(BOOST_NO_SFINAE_EXPR)
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# include <boost/type_traits/is_same.hpp>
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# endif
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# if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && \
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!defined(BOOST_NO_SFINAE_EXPR)
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# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 1
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# else
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# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 0
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# endif
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namespace boost { namespace unordered { namespace detail {
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// TODO: Does this match std::allocator_traits<Alloc>::rebind_alloc<T>?
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template <typename Alloc, typename T>
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struct rebind_wrap
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{
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typedef typename Alloc::BOOST_NESTED_TEMPLATE rebind<T>::other type;
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};
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# if defined(BOOST_MSVC) && BOOST_MSVC <= 1400
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# define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname) \
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template <typename Tp, typename Default> \
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struct default_type_ ## tname { \
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\
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template <typename X> \
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static choice1::type test(choice1, typename X::tname* = 0); \
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\
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template <typename X> \
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static choice2::type test(choice2, void* = 0); \
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\
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struct DefaultWrap { typedef Default tname; }; \
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\
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enum { value = (1 == sizeof(test<Tp>(choose()))) }; \
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\
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typedef typename boost::detail::if_true<value>:: \
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BOOST_NESTED_TEMPLATE then<Tp, DefaultWrap> \
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::type::tname type; \
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}
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# else
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template <typename T, typename T2>
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struct sfinae : T2 {};
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# define BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(tname) \
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template <typename Tp, typename Default> \
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struct default_type_ ## tname { \
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\
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template <typename X> \
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static typename boost::unordered::detail::sfinae< \
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typename X::tname, choice1>::type \
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test(choice1); \
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\
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template <typename X> \
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static choice2::type test(choice2); \
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\
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struct DefaultWrap { typedef Default tname; }; \
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\
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enum { value = (1 == sizeof(test<Tp>(choose()))) }; \
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\
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typedef typename boost::detail::if_true<value>:: \
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BOOST_NESTED_TEMPLATE then<Tp, DefaultWrap> \
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::type::tname type; \
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}
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# endif
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# define BOOST_UNORDERED_DEFAULT_TYPE(T,tname, arg) \
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typename default_type_ ## tname<T, arg>::type
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(pointer);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(const_pointer);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(void_pointer);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(const_void_pointer);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(difference_type);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(size_type);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_copy_assignment);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_move_assignment);
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BOOST_UNORDERED_DEFAULT_TYPE_TMPLT(propagate_on_container_swap);
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# if !defined(BOOST_NO_SFINAE_EXPR)
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template <typename T>
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BOOST_UNORDERED_HAS_FUNCTION(
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select_on_container_copy_construction, U const, (), 0
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);
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template <typename T>
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BOOST_UNORDERED_HAS_FUNCTION(
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max_size, U const, (), 0
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);
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# if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
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template <typename T, typename ValueType, typename... Args>
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BOOST_UNORDERED_HAS_FUNCTION(
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construct, U, (
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boost::unordered::detail::make<ValueType*>(),
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boost::unordered::detail::make<Args const>()...), 2
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);
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# else
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template <typename T, typename ValueType>
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BOOST_UNORDERED_HAS_FUNCTION(
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construct, U, (
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boost::unordered::detail::make<ValueType*>(),
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boost::unordered::detail::make<ValueType const>()), 2
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);
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# endif
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template <typename T, typename ValueType>
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BOOST_UNORDERED_HAS_FUNCTION(
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destroy, U, (boost::unordered::detail::make<ValueType*>()), 1
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);
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# else
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template <typename T>
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BOOST_UNORDERED_HAS_MEMBER(select_on_container_copy_construction);
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template <typename T>
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BOOST_UNORDERED_HAS_MEMBER(max_size);
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template <typename T, typename ValueType>
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BOOST_UNORDERED_HAS_MEMBER(construct);
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template <typename T, typename ValueType>
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BOOST_UNORDERED_HAS_MEMBER(destroy);
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# endif
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namespace func
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{
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template <typename Alloc>
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inline Alloc call_select_on_container_copy_construction(const Alloc& rhs,
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typename boost::enable_if_c<
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boost::unordered::detail::
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has_select_on_container_copy_construction<Alloc>::value, void*
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>::type = 0)
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{
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return rhs.select_on_container_copy_construction();
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}
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template <typename Alloc>
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inline Alloc call_select_on_container_copy_construction(const Alloc& rhs,
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typename boost::disable_if_c<
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boost::unordered::detail::
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has_select_on_container_copy_construction<Alloc>::value, void*
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>::type = 0)
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{
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return rhs;
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}
|
|
|
|
template <typename SizeType, typename Alloc>
|
|
inline SizeType call_max_size(const Alloc& a,
|
|
typename boost::enable_if_c<
|
|
boost::unordered::detail::has_max_size<Alloc>::value, void*
|
|
>::type = 0)
|
|
{
|
|
return a.max_size();
|
|
}
|
|
|
|
template <typename SizeType, typename Alloc>
|
|
inline SizeType call_max_size(const Alloc&, typename boost::disable_if_c<
|
|
boost::unordered::detail::has_max_size<Alloc>::value, void*
|
|
>::type = 0)
|
|
{
|
|
return (std::numeric_limits<SizeType>::max)();
|
|
}
|
|
|
|
} // namespace func.
|
|
|
|
template <typename Alloc>
|
|
struct allocator_traits
|
|
{
|
|
typedef Alloc allocator_type;
|
|
typedef typename Alloc::value_type value_type;
|
|
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, pointer, value_type*)
|
|
pointer;
|
|
|
|
template <typename T>
|
|
struct pointer_to_other : boost::pointer_to_other<pointer, T> {};
|
|
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, const_pointer,
|
|
typename pointer_to_other<const value_type>::type)
|
|
const_pointer;
|
|
|
|
//typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, void_pointer,
|
|
// typename pointer_to_other<void>::type)
|
|
// void_pointer;
|
|
//
|
|
//typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, const_void_pointer,
|
|
// typename pointer_to_other<const void>::type)
|
|
// const_void_pointer;
|
|
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, difference_type,
|
|
std::ptrdiff_t) difference_type;
|
|
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(Alloc, size_type, std::size_t)
|
|
size_type;
|
|
|
|
// TODO: rebind_alloc and rebind_traits
|
|
|
|
static pointer allocate(Alloc& a, size_type n)
|
|
{ return a.allocate(n); }
|
|
|
|
// I never use this, so I'll just comment it out for now.
|
|
//
|
|
//static pointer allocate(Alloc& a, size_type n,
|
|
// const_void_pointer hint)
|
|
// { return DEFAULT_FUNC(allocate, pointer)(a, n, hint); }
|
|
|
|
static void deallocate(Alloc& a, pointer p, size_type n)
|
|
{ a.deallocate(p, n); }
|
|
|
|
public:
|
|
|
|
# if BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT
|
|
|
|
template <typename T, typename... Args>
|
|
static typename boost::enable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T, Args...>
|
|
::value>::type
|
|
construct(Alloc& a, T* p, BOOST_FWD_REF(Args)... x)
|
|
{
|
|
a.construct(p, boost::forward<Args>(x)...);
|
|
}
|
|
|
|
template <typename T, typename... Args>
|
|
static typename boost::disable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T, Args...>
|
|
::value>::type
|
|
construct(Alloc&, T* p, BOOST_FWD_REF(Args)... x)
|
|
{
|
|
new ((void*) p) T(boost::forward<Args>(x)...);
|
|
}
|
|
|
|
template <typename T>
|
|
static typename boost::enable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
|
|
destroy(Alloc& a, T* p)
|
|
{
|
|
a.destroy(p);
|
|
}
|
|
|
|
template <typename T>
|
|
static typename boost::disable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
|
|
destroy(Alloc&, T* p)
|
|
{
|
|
boost::unordered::detail::func::destroy(p);
|
|
}
|
|
|
|
# elif !defined(BOOST_NO_SFINAE_EXPR)
|
|
|
|
template <typename T>
|
|
static typename boost::enable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T>::value>::type
|
|
construct(Alloc& a, T* p, T const& x)
|
|
{
|
|
a.construct(p, x);
|
|
}
|
|
|
|
template <typename T>
|
|
static typename boost::disable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T>::value>::type
|
|
construct(Alloc&, T* p, T const& x)
|
|
{
|
|
new ((void*) p) T(x);
|
|
}
|
|
|
|
template <typename T>
|
|
static typename boost::enable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
|
|
destroy(Alloc& a, T* p)
|
|
{
|
|
a.destroy(p);
|
|
}
|
|
|
|
template <typename T>
|
|
static typename boost::disable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value>::type
|
|
destroy(Alloc&, T* p)
|
|
{
|
|
boost::unordered::detail::func::destroy(p);
|
|
}
|
|
|
|
# else
|
|
|
|
// If we don't have SFINAE expressions, only call construct for the
|
|
// copy constructor for the allocator's value_type - as that's
|
|
// the only construct method that old fashioned allocators support.
|
|
|
|
template <typename T>
|
|
static void construct(Alloc& a, T* p, T const& x,
|
|
typename boost::enable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T>::value &&
|
|
boost::is_same<T, value_type>::value,
|
|
void*>::type = 0)
|
|
{
|
|
a.construct(p, x);
|
|
}
|
|
|
|
template <typename T>
|
|
static void construct(Alloc&, T* p, T const& x,
|
|
typename boost::disable_if_c<
|
|
boost::unordered::detail::has_construct<Alloc, T>::value &&
|
|
boost::is_same<T, value_type>::value,
|
|
void*>::type = 0)
|
|
{
|
|
new ((void*) p) T(x);
|
|
}
|
|
|
|
template <typename T>
|
|
static void destroy(Alloc& a, T* p,
|
|
typename boost::enable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value &&
|
|
boost::is_same<T, value_type>::value,
|
|
void*>::type = 0)
|
|
{
|
|
a.destroy(p);
|
|
}
|
|
|
|
template <typename T>
|
|
static void destroy(Alloc&, T* p,
|
|
typename boost::disable_if_c<
|
|
boost::unordered::detail::has_destroy<Alloc, T>::value &&
|
|
boost::is_same<T, value_type>::value,
|
|
void*>::type = 0)
|
|
{
|
|
boost::unordered::detail::func::destroy(p);
|
|
}
|
|
|
|
# endif
|
|
|
|
static size_type max_size(const Alloc& a)
|
|
{
|
|
return boost::unordered::detail::func::
|
|
call_max_size<size_type>(a);
|
|
}
|
|
|
|
// Allocator propagation on construction
|
|
|
|
static Alloc select_on_container_copy_construction(Alloc const& rhs)
|
|
{
|
|
return boost::unordered::detail::func::
|
|
call_select_on_container_copy_construction(rhs);
|
|
}
|
|
|
|
// Allocator propagation on assignment and swap.
|
|
// Return true if lhs is modified.
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(
|
|
Alloc, propagate_on_container_copy_assignment, false_type)
|
|
propagate_on_container_copy_assignment;
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(
|
|
Alloc,propagate_on_container_move_assignment, false_type)
|
|
propagate_on_container_move_assignment;
|
|
typedef BOOST_UNORDERED_DEFAULT_TYPE(
|
|
Alloc,propagate_on_container_swap,false_type)
|
|
propagate_on_container_swap;
|
|
};
|
|
}}}
|
|
|
|
# undef BOOST_UNORDERED_DEFAULT_TYPE_TMPLT
|
|
# undef BOOST_UNORDERED_DEFAULT_TYPE
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// std::allocator_traits
|
|
|
|
#elif BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 1
|
|
|
|
# include <memory>
|
|
|
|
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 1
|
|
|
|
namespace boost { namespace unordered { namespace detail {
|
|
|
|
template <typename Alloc>
|
|
struct allocator_traits : std::allocator_traits<Alloc> {};
|
|
|
|
template <typename Alloc, typename T>
|
|
struct rebind_wrap
|
|
{
|
|
typedef typename std::allocator_traits<Alloc>::
|
|
template rebind_alloc<T> type;
|
|
};
|
|
}}}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// boost::container::allocator_traits
|
|
|
|
#elif BOOST_UNORDERED_USE_ALLOCATOR_TRAITS == 2
|
|
|
|
# include <boost/container/allocator_traits.hpp>
|
|
|
|
# define BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT 0
|
|
|
|
namespace boost { namespace unordered { namespace detail {
|
|
|
|
template <typename Alloc>
|
|
struct allocator_traits :
|
|
boost::container::allocator_traits<Alloc> {};
|
|
|
|
template <typename Alloc, typename T>
|
|
struct rebind_wrap :
|
|
boost::container::allocator_traits<Alloc>::
|
|
template portable_rebind_alloc<T>
|
|
{};
|
|
|
|
}}}
|
|
|
|
#else
|
|
|
|
#error "Invalid BOOST_UNORDERED_USE_ALLOCATOR_TRAITS value."
|
|
|
|
#endif
|
|
|
|
|
|
namespace boost { namespace unordered { namespace detail { namespace func {
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// call_construct
|
|
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
|
|
|
|
# if BOOST_UNORDERED_DETAIL_FULL_CONSTRUCT
|
|
|
|
template <typename Alloc, typename T, typename... Args>
|
|
inline void call_construct(Alloc& alloc, T* address,
|
|
BOOST_FWD_REF(Args)... args)
|
|
{
|
|
boost::unordered::detail::allocator_traits<Alloc>::construct(alloc,
|
|
address, boost::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename Alloc, typename T>
|
|
inline void destroy_value_impl(Alloc& alloc, T* x) {
|
|
boost::unordered::detail::allocator_traits<Alloc>::destroy(alloc, x);
|
|
}
|
|
|
|
|
|
# else
|
|
|
|
template <typename Alloc, typename T, typename... Args>
|
|
inline void call_construct(Alloc&, T* address,
|
|
BOOST_FWD_REF(Args)... args)
|
|
{
|
|
new((void*) address) T(boost::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename Alloc, typename T>
|
|
inline void destroy_value_impl(Alloc&, T* x) {
|
|
boost::unordered::detail::func::destroy(x);
|
|
}
|
|
|
|
|
|
# endif
|
|
|
|
#else
|
|
|
|
template <typename Alloc, typename T>
|
|
inline void destroy_value_impl(Alloc&, T* x) {
|
|
boost::unordered::detail::func::destroy(x);
|
|
}
|
|
|
|
#endif
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Construct from tuple
|
|
//
|
|
// Used for piecewise construction.
|
|
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
|
|
template<typename Alloc, typename T> \
|
|
void construct_from_tuple(Alloc& alloc, T* ptr, namespace_ tuple<>) \
|
|
{ \
|
|
boost::unordered::detail::func::call_construct(alloc, ptr); \
|
|
} \
|
|
\
|
|
BOOST_PP_REPEAT_FROM_TO(1, n, \
|
|
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
|
|
template<typename Alloc, typename T, \
|
|
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
|
|
void construct_from_tuple(Alloc& alloc, T* ptr, \
|
|
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
|
|
{ \
|
|
boost::unordered::detail::func::call_construct(alloc, ptr, \
|
|
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
|
|
); \
|
|
}
|
|
|
|
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
|
|
namespace_ get<n>(x)
|
|
|
|
#elif !defined(__SUNPRO_CC)
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
|
|
template<typename Alloc, typename T> \
|
|
void construct_from_tuple(Alloc&, T* ptr, namespace_ tuple<>) \
|
|
{ \
|
|
new ((void*) ptr) T(); \
|
|
} \
|
|
\
|
|
BOOST_PP_REPEAT_FROM_TO(1, n, \
|
|
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
|
|
template<typename Alloc, typename T, \
|
|
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
|
|
void construct_from_tuple(Alloc&, T* ptr, \
|
|
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
|
|
{ \
|
|
new ((void*) ptr) T( \
|
|
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
|
|
); \
|
|
}
|
|
|
|
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
|
|
namespace_ get<n>(x)
|
|
|
|
#else
|
|
|
|
template <int N> struct length {};
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(n, namespace_) \
|
|
template<typename Alloc, typename T> \
|
|
void construct_from_tuple_impl( \
|
|
boost::unordered::detail::func::length<0>, Alloc&, T* ptr, \
|
|
namespace_ tuple<>) \
|
|
{ \
|
|
new ((void*) ptr) T(); \
|
|
} \
|
|
\
|
|
BOOST_PP_REPEAT_FROM_TO(1, n, \
|
|
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL, namespace_)
|
|
|
|
# define BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL(z, n, namespace_) \
|
|
template<typename Alloc, typename T, \
|
|
BOOST_PP_ENUM_PARAMS_Z(z, n, typename A)> \
|
|
void construct_from_tuple_impl( \
|
|
boost::unordered::detail::func::length<n>, Alloc&, T* ptr, \
|
|
namespace_ tuple<BOOST_PP_ENUM_PARAMS_Z(z, n, A)> const& x) \
|
|
{ \
|
|
new ((void*) ptr) T( \
|
|
BOOST_PP_ENUM_##z(n, BOOST_UNORDERED_GET_TUPLE_ARG, namespace_) \
|
|
); \
|
|
}
|
|
|
|
# define BOOST_UNORDERED_GET_TUPLE_ARG(z, n, namespace_) \
|
|
namespace_ get<n>(x)
|
|
|
|
#endif
|
|
|
|
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(10, boost::)
|
|
|
|
#if !defined(__SUNPRO_CC) && !defined(BOOST_NO_CXX11_HDR_TUPLE)
|
|
BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE(10, std::)
|
|
#endif
|
|
|
|
#undef BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE
|
|
#undef BOOST_UNORDERED_CONSTRUCT_FROM_TUPLE_IMPL
|
|
#undef BOOST_UNORDERED_GET_TUPLE_ARG
|
|
|
|
#if defined(__SUNPRO_CC)
|
|
|
|
template <typename Alloc, typename T, typename Tuple>
|
|
void construct_from_tuple(Alloc& alloc, T* ptr, Tuple const& x)
|
|
{
|
|
construct_from_tuple_impl(
|
|
boost::unordered::detail::func::length<
|
|
boost::tuples::length<Tuple>::value>(),
|
|
alloc, ptr, x);
|
|
}
|
|
|
|
#endif
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Trait to check for piecewise construction.
|
|
|
|
template <typename A0>
|
|
struct use_piecewise {
|
|
static choice1::type test(choice1,
|
|
boost::unordered::piecewise_construct_t);
|
|
|
|
static choice2::type test(choice2, ...);
|
|
|
|
enum { value = sizeof(choice1::type) ==
|
|
sizeof(test(choose(), boost::unordered::detail::make<A0>())) };
|
|
};
|
|
|
|
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Construct from variadic parameters
|
|
|
|
// For the standard pair constructor.
|
|
|
|
template <typename Alloc, typename T, typename... Args>
|
|
inline void construct_value_impl(Alloc& alloc, T* address,
|
|
BOOST_FWD_REF(Args)... args)
|
|
{
|
|
boost::unordered::detail::func::call_construct(alloc,
|
|
address, boost::forward<Args>(args)...);
|
|
}
|
|
|
|
// Special case for piece_construct
|
|
//
|
|
// TODO: When possible, it might be better to use std::pair's
|
|
// constructor for std::piece_construct with std::tuple.
|
|
|
|
template <typename Alloc, typename A, typename B,
|
|
typename A0, typename A1, typename A2>
|
|
inline typename enable_if<use_piecewise<A0>, void>::type
|
|
construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
|
|
BOOST_FWD_REF(A0), BOOST_FWD_REF(A1) a1, BOOST_FWD_REF(A2) a2)
|
|
{
|
|
boost::unordered::detail::func::construct_from_tuple(alloc,
|
|
boost::addressof(address->first), boost::forward<A1>(a1));
|
|
boost::unordered::detail::func::construct_from_tuple(alloc,
|
|
boost::addressof(address->second), boost::forward<A2>(a2));
|
|
}
|
|
|
|
#else // BOOST_NO_CXX11_VARIADIC_TEMPLATES
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Construct from emplace_args
|
|
|
|
// Explicitly write out first three overloads for the sake of sane
|
|
// error messages.
|
|
|
|
template <typename Alloc, typename T, typename A0>
|
|
inline void construct_value_impl(Alloc&, T* address,
|
|
emplace_args1<A0> const& args)
|
|
{
|
|
new((void*) address) T(boost::forward<A0>(args.a0));
|
|
}
|
|
|
|
template <typename Alloc, typename T, typename A0, typename A1>
|
|
inline void construct_value_impl(Alloc&, T* address,
|
|
emplace_args2<A0, A1> const& args)
|
|
{
|
|
new((void*) address) T(
|
|
boost::forward<A0>(args.a0),
|
|
boost::forward<A1>(args.a1)
|
|
);
|
|
}
|
|
|
|
template <typename Alloc, typename T, typename A0, typename A1, typename A2>
|
|
inline void construct_value_impl(Alloc&, T* address,
|
|
emplace_args3<A0, A1, A2> const& args)
|
|
{
|
|
new((void*) address) T(
|
|
boost::forward<A0>(args.a0),
|
|
boost::forward<A1>(args.a1),
|
|
boost::forward<A2>(args.a2)
|
|
);
|
|
}
|
|
|
|
// Use a macro for the rest.
|
|
|
|
#define BOOST_UNORDERED_CONSTRUCT_IMPL(z, num_params, _) \
|
|
template < \
|
|
typename Alloc, typename T, \
|
|
BOOST_PP_ENUM_PARAMS_Z(z, num_params, typename A) \
|
|
> \
|
|
inline void construct_value_impl(Alloc&, T* address, \
|
|
boost::unordered::detail::BOOST_PP_CAT(emplace_args,num_params) < \
|
|
BOOST_PP_ENUM_PARAMS_Z(z, num_params, A) \
|
|
> const& args) \
|
|
{ \
|
|
new((void*) address) T( \
|
|
BOOST_PP_ENUM_##z(num_params, BOOST_UNORDERED_CALL_FORWARD, \
|
|
args.a)); \
|
|
}
|
|
|
|
BOOST_PP_REPEAT_FROM_TO(4, BOOST_UNORDERED_EMPLACE_LIMIT,
|
|
BOOST_UNORDERED_CONSTRUCT_IMPL, _)
|
|
|
|
#undef BOOST_UNORDERED_CONSTRUCT_IMPL
|
|
|
|
// Construct with piece_construct
|
|
|
|
template <typename Alloc, typename A, typename B,
|
|
typename A0, typename A1, typename A2>
|
|
inline void construct_value_impl(Alloc& alloc, std::pair<A, B>* address,
|
|
boost::unordered::detail::emplace_args3<A0, A1, A2> const& args,
|
|
typename enable_if<use_piecewise<A0>, void*>::type = 0)
|
|
{
|
|
boost::unordered::detail::func::construct_from_tuple(alloc,
|
|
boost::addressof(address->first), args.a1);
|
|
boost::unordered::detail::func::construct_from_tuple(alloc,
|
|
boost::addressof(address->second), args.a2);
|
|
}
|
|
|
|
#endif // BOOST_NO_CXX11_VARIADIC_TEMPLATES
|
|
|
|
}}}}
|
|
|
|
namespace boost { namespace unordered { namespace detail {
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// array_constructor
|
|
//
|
|
// Allocate and construct an array in an exception safe manner, and
|
|
// clean up if an exception is thrown before the container takes charge
|
|
// of it.
|
|
|
|
template <typename Allocator>
|
|
struct array_constructor
|
|
{
|
|
typedef boost::unordered::detail::allocator_traits<Allocator> traits;
|
|
typedef typename traits::pointer pointer;
|
|
|
|
Allocator& alloc_;
|
|
pointer ptr_;
|
|
pointer constructed_;
|
|
std::size_t length_;
|
|
|
|
array_constructor(Allocator& a)
|
|
: alloc_(a), ptr_(), constructed_(), length_(0)
|
|
{
|
|
constructed_ = pointer();
|
|
ptr_ = pointer();
|
|
}
|
|
|
|
~array_constructor() {
|
|
if (ptr_) {
|
|
for(pointer p = ptr_; p != constructed_; ++p) {
|
|
boost::unordered::detail::func::destroy(
|
|
boost::addressof(*p));
|
|
}
|
|
|
|
traits::deallocate(alloc_, ptr_, length_);
|
|
}
|
|
}
|
|
|
|
template <typename V>
|
|
void construct(V const& v, std::size_t l)
|
|
{
|
|
BOOST_ASSERT(!ptr_);
|
|
length_ = l;
|
|
ptr_ = traits::allocate(alloc_, length_);
|
|
pointer end = ptr_ + static_cast<std::ptrdiff_t>(length_);
|
|
for(constructed_ = ptr_; constructed_ != end; ++constructed_) {
|
|
new ((void*) boost::addressof(*constructed_)) V(v);
|
|
}
|
|
}
|
|
|
|
pointer get() const
|
|
{
|
|
return ptr_;
|
|
}
|
|
|
|
pointer release()
|
|
{
|
|
pointer p(ptr_);
|
|
ptr_ = pointer();
|
|
return p;
|
|
}
|
|
|
|
private:
|
|
|
|
array_constructor(array_constructor const&);
|
|
array_constructor& operator=(array_constructor const&);
|
|
};
|
|
}}}
|
|
|
|
#if defined(BOOST_MSVC)
|
|
#pragma warning(pop)
|
|
#endif
|
|
|
|
#endif
|