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Diffstat (limited to 'libstdc++-v3/include/ext/memory')
| -rw-r--r-- | libstdc++-v3/include/ext/memory | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/memory b/libstdc++-v3/include/ext/memory new file mode 100644 index 000000000..ddcfe22b5 --- /dev/null +++ b/libstdc++-v3/include/ext/memory @@ -0,0 +1,198 @@ +// Memory extensions -*- C++ -*- + +// Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 +// 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. + +// 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. + +// 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. + +// 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/>. + +/* + * + * 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 + * 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 ext/memory + * This file is a GNU extension to the Standard C++ Library (possibly + * containing extensions from the HP/SGI STL subset). + */ + +#ifndef _EXT_MEMORY +#define _EXT_MEMORY 1 + +#pragma GCC system_header + +#include <memory> +#include <bits/stl_tempbuf.h> + +namespace __gnu_cxx _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + + using std::ptrdiff_t; + using std::pair; + using std::__iterator_category; + using std::_Temporary_buffer; + + template<typename _InputIter, typename _Size, typename _ForwardIter> + pair<_InputIter, _ForwardIter> + __uninitialized_copy_n(_InputIter __first, _Size __count, + _ForwardIter __result, std::input_iterator_tag) + { + _ForwardIter __cur = __result; + __try + { + for (; __count > 0 ; --__count, ++__first, ++__cur) + std::_Construct(&*__cur, *__first); + return pair<_InputIter, _ForwardIter>(__first, __cur); + } + __catch(...) + { + std::_Destroy(__result, __cur); + __throw_exception_again; + } + } + + template<typename _RandomAccessIter, typename _Size, typename _ForwardIter> + inline pair<_RandomAccessIter, _ForwardIter> + __uninitialized_copy_n(_RandomAccessIter __first, _Size __count, + _ForwardIter __result, + std::random_access_iterator_tag) + { + _RandomAccessIter __last = __first + __count; + return (pair<_RandomAccessIter, _ForwardIter> + (__last, std::uninitialized_copy(__first, __last, __result))); + } + + template<typename _InputIter, typename _Size, typename _ForwardIter> + inline pair<_InputIter, _ForwardIter> + __uninitialized_copy_n(_InputIter __first, _Size __count, + _ForwardIter __result) + { return __gnu_cxx::__uninitialized_copy_n(__first, __count, __result, + __iterator_category(__first)); } + + /** + * @brief Copies the range [first,last) into result. + * @param first An input iterator. + * @param last An input iterator. + * @param result An output iterator. + * @return result + (first - last) + * @ingroup SGIextensions + * + * Like copy(), but does not require an initialized output range. + */ + template<typename _InputIter, typename _Size, typename _ForwardIter> + inline pair<_InputIter, _ForwardIter> + uninitialized_copy_n(_InputIter __first, _Size __count, + _ForwardIter __result) + { return __gnu_cxx::__uninitialized_copy_n(__first, __count, __result, + __iterator_category(__first)); } + + + // An alternative version of uninitialized_copy_n that constructs + // and destroys objects with a user-provided allocator. + template<typename _InputIter, typename _Size, typename _ForwardIter, + typename _Allocator> + pair<_InputIter, _ForwardIter> + __uninitialized_copy_n_a(_InputIter __first, _Size __count, + _ForwardIter __result, + _Allocator __alloc) + { + _ForwardIter __cur = __result; + __try + { + for (; __count > 0 ; --__count, ++__first, ++__cur) + __alloc.construct(&*__cur, *__first); + return pair<_InputIter, _ForwardIter>(__first, __cur); + } + __catch(...) + { + std::_Destroy(__result, __cur, __alloc); + __throw_exception_again; + } + } + + template<typename _InputIter, typename _Size, typename _ForwardIter, + typename _Tp> + inline pair<_InputIter, _ForwardIter> + __uninitialized_copy_n_a(_InputIter __first, _Size __count, + _ForwardIter __result, + std::allocator<_Tp>) + { + return __gnu_cxx::uninitialized_copy_n(__first, __count, __result); + } + + /** + * This class provides similar behavior and semantics of the standard + * functions get_temporary_buffer() and return_temporary_buffer(), but + * encapsulated in a type vaguely resembling a standard container. + * + * By default, a temporary_buffer<Iter> stores space for objects of + * whatever type the Iter iterator points to. It is constructed from a + * typical [first,last) range, and provides the begin(), end(), size() + * functions, as well as requested_size(). For non-trivial types, copies + * of *first will be used to initialize the storage. + * + * @c malloc is used to obtain underlying storage. + * + * Like get_temporary_buffer(), not all the requested memory may be + * available. Ideally, the created buffer will be large enough to hold a + * copy of [first,last), but if size() is less than requested_size(), + * then this didn't happen. + * + * @ingroup SGIextensions + */ + template <class _ForwardIterator, class _Tp + = typename std::iterator_traits<_ForwardIterator>::value_type > + struct temporary_buffer : public _Temporary_buffer<_ForwardIterator, _Tp> + { + /// Requests storage large enough to hold a copy of [first,last). + temporary_buffer(_ForwardIterator __first, _ForwardIterator __last) + : _Temporary_buffer<_ForwardIterator, _Tp>(__first, __last) { } + + /// Destroys objects and frees storage. + ~temporary_buffer() { } + }; + +_GLIBCXX_END_NAMESPACE_VERSION +} // namespace + +#endif + |