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e9229c8bf4
* Use the empty base optimization for storing the allocator * Support C++11 minimal allocators * Support C++11 stateful allocators * Support C++11 allocator construct and destroy
73 lines
1.5 KiB
C++
73 lines
1.5 KiB
C++
// Copyright 2018 Glen Joseph Fernandes
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// (glenjofe@gmail.com)
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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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#ifndef BOOST_MULTI_ARRAY_ALLOCATORS_HPP
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#define BOOST_MULTI_ARRAY_ALLOCATORS_HPP
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX11_ALLOCATOR)
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#include <memory>
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#else
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#include <new>
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#endif
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namespace boost {
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namespace detail {
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namespace multi_array {
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template<class A, class T>
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inline void destroy(A& allocator, T* ptr, T* end)
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{
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for (; ptr != end; ++ptr) {
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#if !defined(BOOST_NO_CXX11_ALLOCATOR)
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std::allocator_traits<A>::destroy(allocator,ptr);
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#else
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ptr->~T();
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#endif
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}
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}
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template<class A, class T>
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inline void construct(A& allocator, T* ptr)
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{
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#if !defined(BOOST_NO_CXX11_ALLOCATOR)
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std::allocator_traits<A>::construct(allocator,ptr);
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#else
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::new(static_cast<void*>(ptr)) T();
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#endif
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}
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#if !defined(BOOST_NO_EXCEPTIONS)
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template<class A, class T>
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inline void construct(A& allocator, T* ptr, T* end)
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{
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T* start = ptr;
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try {
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for (; ptr != end; ++ptr) {
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boost::detail::multi_array::construct(allocator,ptr);
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}
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} catch (...) {
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boost::detail::multi_array::destroy(allocator,start,ptr);
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throw;
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}
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}
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#else
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template<class A, class T>
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inline void construct(A& allocator, T* ptr, T* end)
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{
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for (; ptr != end; ++ptr) {
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boost::detail::multi_array::construct(allocator,ptr);
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}
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}
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#endif
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} // multi_array
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} // detail
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} // boost
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#endif
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