forked from boostorg/smart_ptr
58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) 2012 Glen Joseph Fernandes
|
|
* glenfe at live dot com
|
|
*
|
|
* Distributed under the Boost Software License,
|
|
* Version 1.0. (See accompanying file LICENSE_1_0.txt
|
|
* or copy at http://boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
#ifndef BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
|
|
#define BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
|
|
|
|
#include <boost/smart_ptr/shared_ptr.hpp>
|
|
#include <boost/smart_ptr/detail/allocate_array_helper.hpp>
|
|
#include <boost/smart_ptr/detail/array_deleter.hpp>
|
|
#include <boost/smart_ptr/detail/array_traits.hpp>
|
|
#include <boost/smart_ptr/detail/sp_if_array.hpp>
|
|
|
|
namespace boost {
|
|
template<typename T, typename A>
|
|
inline typename detail::sp_if_array<T>::type
|
|
allocate_shared(const A& allocator, size_t size) {
|
|
typedef typename shared_ptr<T>::element_type T1;
|
|
typedef typename detail::array_type<T1>::type T2;
|
|
T1* p1 = 0;
|
|
T2* p2 = 0;
|
|
size_t n1 = size * detail::array_size<T1>::size;
|
|
detail::allocate_array_helper<A, T2> a1(allocator, n1, &p2);
|
|
detail::array_deleter<T2> d1;
|
|
shared_ptr<T> s1(p1, d1, a1);
|
|
detail::array_deleter<T2>* d2;
|
|
p1 = reinterpret_cast<T1*>(p2);
|
|
d2 = get_deleter<detail::array_deleter<T2> >(s1);
|
|
d2->construct(p2, n1);
|
|
return shared_ptr<T>(s1, p1);
|
|
}
|
|
#if defined(BOOST_HAS_VARIADIC_TMPL) && defined(BOOST_HAS_RVALUE_REFS)
|
|
template<typename T, typename A, typename... Args>
|
|
inline typename detail::sp_if_array<T>::type
|
|
allocate_shared(const A& allocator, size_t size, Args&&... args) {
|
|
typedef typename shared_ptr<T>::element_type T1;
|
|
typedef typename detail::array_type<T1>::type T2;
|
|
T1* p1 = 0;
|
|
T2* p2 = 0;
|
|
size_t n1 = size * detail::array_size<T1>::size;
|
|
detail::allocate_array_helper<A, T2> a1(allocator, n1, &p2);
|
|
detail::array_deleter<T2> d1;
|
|
shared_ptr<T> s1(p1, d1, a1);
|
|
detail::array_deleter<T2>* d2;
|
|
p1 = reinterpret_cast<T1*>(p2);
|
|
d2 = get_deleter<detail::array_deleter<T2> >(s1);
|
|
d2->construct(p2, n1, std::forward<Args>(args)...);
|
|
return shared_ptr<T>(s1, p1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#endif
|