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// nonstandard construct and destroy functions -*- C++ -*-
// Copyright (C) 2001, 2002, 2003, 2004, 2005 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 2, or (at your option)
// any later version.
// 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.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
/*
*
* 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.
*/
/** @file stl_construct.h
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
#ifndef _STL_CONSTRUCT_H
#define _STL_CONSTRUCT_H 1
#include <bits/cpp_type_traits.h>
#include <new>
_GLIBCXX_BEGIN_NAMESPACE(std)
/**
* @if maint
* Constructs an object in existing memory by invoking an allocated
* object's constructor with an initializer.
* @endif
*/
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);
}
/**
* @if maint
* Constructs an object in existing memory by invoking an allocated
* object's default constructor (no initializers).
* @endif
*/
template<typename _T1>
inline void
_Construct(_T1* __p)
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 402. wrong new expression in [some_]allocator::construct
::new(static_cast<void*>(__p)) _T1();
}
/**
* @if maint
* Destroy the object pointed to by a pointer type.
* @endif
*/
template<typename _Tp>
inline void
_Destroy(_Tp* __pointer)
{ __pointer->~_Tp(); }
/**
* @if maint
* Destroy a range of objects with nontrivial destructors.
*
* This is a helper function used only by _Destroy().
* @endif
*/
template<typename _ForwardIterator>
inline void
__destroy_aux(_ForwardIterator __first, _ForwardIterator __last,
__false_type)
{
for (; __first != __last; ++__first)
std::_Destroy(&*__first);
}
/**
* @if maint
* Destroy a range of objects with trivial destructors. Since the destructors
* are trivial, there's nothing to do and hopefully this function will be
* entirely optimized away.
*
* This is a helper function used only by _Destroy().
* @endif
*/
template<typename _ForwardIterator>
inline void
__destroy_aux(_ForwardIterator, _ForwardIterator, __true_type)
{ }
/**
* @if maint
* 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.
* @endif
*/
template<typename _ForwardIterator>
inline void
_Destroy(_ForwardIterator __first, _ForwardIterator __last)
{
typedef typename iterator_traits<_ForwardIterator>::value_type
_Value_type;
typedef typename std::__is_scalar<_Value_type>::__type
_Has_trivial_destructor;
std::__destroy_aux(__first, __last, _Has_trivial_destructor());
}
/**
* @if maint
* 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.
* @endif
*/
template <typename _Tp> class allocator;
template<typename _ForwardIterator, typename _Allocator>
void
_Destroy(_ForwardIterator __first, _ForwardIterator __last,
_Allocator __alloc)
{
for (; __first != __last; ++__first)
__alloc.destroy(&*__first);
}
template<typename _ForwardIterator, typename _Tp>
inline void
_Destroy(_ForwardIterator __first, _ForwardIterator __last,
allocator<_Tp>)
{
_Destroy(__first, __last);
}
_GLIBCXX_END_NAMESPACE
#endif /* _STL_CONSTRUCT_H */
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