forked from boostorg/smart_ptr
c23bd41c44
Refactor implementation to later simplify making an optimization [for the C++11 allocator case] for when sp_counted_impl_pda destruction invokes the allocator's destroy function instead of the type's destructor.
162 lines
6.2 KiB
C++
162 lines
6.2 KiB
C++
/*
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* Copyright (c) 2012-2014 Glen Joseph Fernandes
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* glenfe at live dot com
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*
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* Distributed under the Boost Software License,
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* Version 1.0. (See accompanying file LICENSE_1_0.txt
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* or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
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#define BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
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#include <boost/smart_ptr/detail/array_allocator.hpp>
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#include <boost/smart_ptr/detail/array_deleter.hpp>
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#include <boost/smart_ptr/detail/sp_if_array.hpp>
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#include <boost/type_traits/remove_cv.hpp>
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namespace boost {
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template<typename T, typename A>
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inline typename boost::detail::sp_if_array<T>::type
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allocate_shared(const A& allocator, std::size_t size) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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typedef boost::detail::as_allocator<T3[], A> A1;
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typedef boost::detail::as_deleter<T3[], A> D1;
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T1* p1 = 0;
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T3* p2 = 0;
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std::size_t n1 = size * boost::detail::array_total<T1>::size;
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D1 d1(allocator, n1);
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A1 a1(allocator, n1, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::as_init(allocator, p2, n1);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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template<typename T, typename A>
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inline typename boost::detail::sp_if_size_array<T>::type
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allocate_shared(const A& allocator) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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enum {
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N = boost::detail::array_total<T>::size
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};
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typedef boost::detail::as_allocator<T3[N], A> A1;
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typedef boost::detail::as_deleter<T3[N], A> D1;
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T1* p1 = 0;
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T3* p2 = 0;
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D1 d1(allocator);
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A1 a1(allocator, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::as_init(allocator, p2, N);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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template<typename T, typename A>
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inline typename boost::detail::sp_if_array<T>::type
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allocate_shared(const A& allocator, std::size_t size,
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const typename boost::detail::array_inner<T>::type& value) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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typedef const T2 T4;
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typedef boost::detail::as_allocator<T3[], A> A1;
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typedef boost::detail::as_deleter<T3[], A> D1;
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enum {
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M = boost::detail::array_total<T1>::size
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};
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T1* p1 = 0;
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T3* p2 = 0;
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T4* p3 = reinterpret_cast<T4*>(&value);
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std::size_t n1 = M * size;
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D1 d1(allocator, n1);
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A1 a1(allocator, n1, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::as_init<T3, A, M>(allocator, p2, n1, p3);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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template<typename T, typename A>
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inline typename boost::detail::sp_if_size_array<T>::type
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allocate_shared(const A& allocator,
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const typename boost::detail::array_inner<T>::type& value) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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typedef const T2 T4;
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enum {
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M = boost::detail::array_total<T1>::size,
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N = boost::detail::array_total<T>::size
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};
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typedef boost::detail::as_allocator<T3[N], A> A1;
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typedef boost::detail::as_deleter<T3[N], A> D1;
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T1* p1 = 0;
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T3* p2 = 0;
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T4* p3 = reinterpret_cast<T4*>(&value);
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D1 d1(allocator);
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A1 a1(allocator, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::as_init<T3, A, M>(allocator, p2, N, p3);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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template<typename T, typename A>
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inline typename boost::detail::sp_if_array<T>::type
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allocate_shared_noinit(const A& allocator, std::size_t size) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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typedef boost::detail::as_allocator<T3[], A> A1;
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typedef boost::detail::ms_deleter<T3[]> D1;
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T1* p1 = 0;
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T3* p2 = 0;
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std::size_t n1 = size * boost::detail::array_total<T1>::size;
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D1 d1(n1);
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A1 a1(allocator, n1, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::ms_noinit(p2, n1);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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template<typename T, typename A>
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inline typename boost::detail::sp_if_size_array<T>::type
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allocate_shared_noinit(const A& allocator) {
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typedef typename boost::detail::array_inner<T>::type T1;
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typedef typename boost::detail::array_base<T1>::type T2;
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typedef typename boost::remove_cv<T2>::type T3;
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enum {
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N = boost::detail::array_total<T>::size
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};
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typedef boost::detail::as_allocator<T3[N], A> A1;
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typedef boost::detail::ms_deleter<T3[N]> D1;
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T1* p1 = 0;
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T3* p2 = 0;
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D1 d1;
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A1 a1(allocator, &p2);
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boost::shared_ptr<T> s1(p1, d1, a1);
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p1 = reinterpret_cast<T1*>(p2);
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boost::detail::ms_noinit(p2, N);
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D1* d2 = static_cast<D1*>(s1._internal_get_untyped_deleter());
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d2->set(p2);
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return boost::shared_ptr<T>(s1, p1);
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}
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}
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#endif
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