0,0 → 1,158 |
// nonstandard construct and destroy functions -*- C++ -*- |
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// Copyright (C) 2001-2015 Free Software Foundation, Inc. |
// |
// This file is part of the GNU ISO C++ Library. This library is free |
// software; you can redistribute it and/or modify it under the |
// terms of the GNU General Public License as published by the |
// Free Software Foundation; either version 3, or (at your option) |
// any later version. |
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// This library is distributed in the hope that it will be useful, |
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
// GNU General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
// permissions described in the GCC Runtime Library Exception, version |
// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
// a copy of the GCC Runtime Library Exception along with this program; |
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
// <http://www.gnu.org/licenses/>. |
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/* |
* |
* Copyright (c) 1994 |
* Hewlett-Packard Company |
* |
* Permission to use, copy, modify, distribute and sell this software |
* and its documentation for any purpose is hereby granted without fee, |
* provided that the above copyright notice appear in all copies and |
* that both that copyright notice and this permission notice appear |
* in supporting documentation. Hewlett-Packard Company makes no |
* representations about the suitability of this software for any |
* purpose. It is provided "as is" without express or implied warranty. |
* |
* |
* Copyright (c) 1996,1997 |
* Silicon Graphics Computer Systems, Inc. |
* |
* Permission to use, copy, modify, distribute and sell this software |
* and its documentation for any purpose is hereby granted without fee, |
* provided that the above copyright notice appear in all copies and |
* that both that copyright notice and this permission notice appear |
* in supporting documentation. Silicon Graphics makes no |
* representations about the suitability of this software for any |
* purpose. It is provided "as is" without express or implied warranty. |
*/ |
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/** @file bits/stl_construct.h |
* This is an internal header file, included by other library headers. |
* Do not attempt to use it directly. @headername{memory} |
*/ |
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#ifndef _STL_CONSTRUCT_H |
#define _STL_CONSTRUCT_H 1 |
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#include <new> |
#include <bits/move.h> |
#include <ext/alloc_traits.h> |
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namespace std _GLIBCXX_VISIBILITY(default) |
{ |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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/** |
* Constructs an object in existing memory by invoking an allocated |
* object's constructor with an initializer. |
*/ |
#if __cplusplus >= 201103L |
template<typename _T1, typename... _Args> |
inline void |
_Construct(_T1* __p, _Args&&... __args) |
{ ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); } |
#else |
template<typename _T1, typename _T2> |
inline void |
_Construct(_T1* __p, const _T2& __value) |
{ |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
// 402. wrong new expression in [some_]allocator::construct |
::new(static_cast<void*>(__p)) _T1(__value); |
} |
#endif |
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/** |
* Destroy the object pointed to by a pointer type. |
*/ |
template<typename _Tp> |
inline void |
_Destroy(_Tp* __pointer) |
{ __pointer->~_Tp(); } |
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template<bool> |
struct _Destroy_aux |
{ |
template<typename _ForwardIterator> |
static void |
__destroy(_ForwardIterator __first, _ForwardIterator __last) |
{ |
for (; __first != __last; ++__first) |
std::_Destroy(std::__addressof(*__first)); |
} |
}; |
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template<> |
struct _Destroy_aux<true> |
{ |
template<typename _ForwardIterator> |
static void |
__destroy(_ForwardIterator, _ForwardIterator) { } |
}; |
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/** |
* Destroy a range of objects. If the value_type of the object has |
* a trivial destructor, the compiler should optimize all of this |
* away, otherwise the objects' destructors must be invoked. |
*/ |
template<typename _ForwardIterator> |
inline void |
_Destroy(_ForwardIterator __first, _ForwardIterator __last) |
{ |
typedef typename iterator_traits<_ForwardIterator>::value_type |
_Value_type; |
std::_Destroy_aux<__has_trivial_destructor(_Value_type)>:: |
__destroy(__first, __last); |
} |
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/** |
* Destroy a range of objects using the supplied allocator. For |
* nondefault allocators we do not optimize away invocation of |
* destroy() even if _Tp has a trivial destructor. |
*/ |
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template<typename _ForwardIterator, typename _Allocator> |
void |
_Destroy(_ForwardIterator __first, _ForwardIterator __last, |
_Allocator& __alloc) |
{ |
typedef __gnu_cxx::__alloc_traits<_Allocator> __traits; |
for (; __first != __last; ++__first) |
__traits::destroy(__alloc, std::__addressof(*__first)); |
} |
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template<typename _ForwardIterator, typename _Tp> |
inline void |
_Destroy(_ForwardIterator __first, _ForwardIterator __last, |
allocator<_Tp>&) |
{ |
_Destroy(__first, __last); |
} |
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_GLIBCXX_END_NAMESPACE_VERSION |
} // namespace std |
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#endif /* _STL_CONSTRUCT_H */ |
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