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Diffstat (limited to 'libstdc++/include/bits/stl_construct.h')
| -rw-r--r-- | libstdc++/include/bits/stl_construct.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/libstdc++/include/bits/stl_construct.h b/libstdc++/include/bits/stl_construct.h new file mode 100644 index 0000000..0a03fb7 --- /dev/null +++ b/libstdc++/include/bits/stl_construct.h @@ -0,0 +1,188 @@ +// 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 */ + |
