# stl_construct.h

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    00001 // nonstandard construct and destroy functions -*- C++ -*-
    00002
    00003 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    00004 // Free Software Foundation, Inc.
    00005 //
    00006 // This file is part of the GNU ISO C++ Library.  This library is free
    00007 // software; you can redistribute it and/or modify it under the
    00008 // terms of the GNU General Public License as published by the
    00009 // Free Software Foundation; either version 3, or (at your option)
    00010 // any later version.
    00011
    00012 // This library is distributed in the hope that it will be useful,
    00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00015 // GNU General Public License for more details.
    00016
    00017 // Under Section 7 of GPL version 3, you are granted additional
    00018 // permissions described in the GCC Runtime Library Exception, version
    00019 // 3.1, as published by the Free Software Foundation.
    00020
    00021 // You should have received a copy of the GNU General Public License and
    00022 // a copy of the GCC Runtime Library Exception along with this program;
    00023 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    00024 // <http://www.gnu.org/licenses/>.
    00025
    00026 /*
    00027  *
    00028  * Copyright (c) 1994
    00029  * Hewlett-Packard Company
    00030  *
    00031  * Permission to use, copy, modify, distribute and sell this software
    00032  * and its documentation for any purpose is hereby granted without fee,
    00033  * provided that the above copyright notice appear in all copies and
    00034  * that both that copyright notice and this permission notice appear
    00035  * in supporting documentation.  Hewlett-Packard Company makes no
    00036  * representations about the suitability of this software for any
    00037  * purpose.  It is provided "as is" without express or implied warranty.
    00038  *
    00039  *
    00040  * Copyright (c) 1996,1997
    00041  * Silicon Graphics Computer Systems, Inc.
    00042  *
    00043  * Permission to use, copy, modify, distribute and sell this software
    00044  * and its documentation for any purpose is hereby granted without fee,
    00045  * provided that the above copyright notice appear in all copies and
    00046  * that both that copyright notice and this permission notice appear
    00047  * in supporting documentation.  Silicon Graphics makes no
    00048  * representations about the suitability of this software for any
    00049  * purpose.  It is provided "as is" without express or implied warranty.
    00050  */
    00051
    00052 /** @file stl_construct.h
    00053  *  This is an internal header file, included by other library headers.
    00054  *  You should not attempt to use it directly.
    00055  */
    00056
    00057 #ifndef _STL_CONSTRUCT_H
    00058 #define _STL_CONSTRUCT_H 1
    00059
    00060 #include <new>
    00061
    00062 _GLIBCXX_BEGIN_NAMESPACE(std)
    00063
    00064   /**
    00065    * Constructs an object in existing memory by invoking an allocated
    00066    * object's constructor with an initializer.
    00067    */
    00068   template<typename _T1, typename _T2>
    00069     inline void
    00070     _Construct(_T1* __p, const _T2& __value)
    00071     {
    00072       // _GLIBCXX_RESOLVE_LIB_DEFECTS
    00073       // 402. wrong new expression in [some_]allocator::construct
    00074       ::new(static_cast<void*>(__p)) _T1(__value);
    00075     }
    00076
    00077   /**
    00078    * Destroy the object pointed to by a pointer type.
    00079    */
    00080   template<typename _Tp>
    00081     inline void
    00082     _Destroy(_Tp* __pointer)
    00083     { __pointer->~_Tp(); }
    00084
    00085   /**
    00086    * Destroy a range of objects.  If the value_type of the object has
    00087    * a trivial destructor, the compiler should optimize all of this
    00088    * away, otherwise the objects' destructors must be invoked.
    00089    */
    00090   template<typename _ForwardIterator>
    00091     inline void
    00092     _Destroy(_ForwardIterator __first, _ForwardIterator __last)
    00093     {
    00094       typedef typename iterator_traits<_ForwardIterator>::value_type
    00095                        _Value_type;
    00096       if (!__has_trivial_destructor(_Value_type))
    00097     for (; __first != __last; ++__first)
    00098       std::_Destroy(&*__first);
    00099     }
    00100
    00101   /**
    00102    * Destroy a range of objects using the supplied allocator.  For
    00103    * nondefault allocators we do not optimize away invocation of
    00104    * destroy() even if _Tp has a trivial destructor.
    00105    */
    00106
    00107   template <typename _Tp> class allocator;
    00108
    00109   template<typename _ForwardIterator, typename _Allocator>
    00110     void
    00111     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
    00112          _Allocator& __alloc)
    00113     {
    00114       for (; __first != __last; ++__first)
    00115     __alloc.destroy(&*__first);
    00116     }
    00117
    00118   template<typename _ForwardIterator, typename _Tp>
    00119     inline void
    00120     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
    00121          allocator<_Tp>&)
    00122     {
    00123       _Destroy(__first, __last);
    00124     }
    00125
    00126 _GLIBCXX_END_NAMESPACE
    00127
    00128 #endif /* _STL_CONSTRUCT_H */
    00129