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- // Allocators -*- C++ -*-
-
- // Copyright (C) 2001, 2002, 2003, 2004 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- // 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) 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 allocator.h
- * This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
- */
-
- #ifndef _ALLOCATOR_H
- #define _ALLOCATOR_H 1
-
- // Define the base class to std::allocator.
- #include <bits/c++allocator.h>
-
- namespace std
- {
- template<typename _Tp>
- class allocator;
-
- template<>
- class allocator<void>
- {
- public:
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef void* pointer;
- typedef const void* const_pointer;
- typedef void value_type;
-
- template<typename _Tp1>
- struct rebind
- { typedef allocator<_Tp1> other; };
- };
-
- /**
- * @brief The "standard" allocator, as per [20.4].
- *
- * (See @link Allocators allocators info @endlink for more.)
- */
- template<typename _Tp>
- class allocator: public ___glibcxx_base_allocator<_Tp>
- {
- public:
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef _Tp* pointer;
- typedef const _Tp* const_pointer;
- typedef _Tp& reference;
- typedef const _Tp& const_reference;
- typedef _Tp value_type;
-
- template<typename _Tp1>
- struct rebind
- { typedef allocator<_Tp1> other; };
-
- allocator() throw() { }
-
- allocator(const allocator& a) throw()
- : ___glibcxx_base_allocator<_Tp>(a) { }
-
- template<typename _Tp1>
- allocator(const allocator<_Tp1>&) throw() { }
-
- ~allocator() throw() { }
-
- // Inherit everything else.
- };
-
- template<typename _T1, typename _T2>
- inline bool
- operator==(const allocator<_T1>&, const allocator<_T2>&)
- { return true; }
-
- template<typename _T1, typename _T2>
- inline bool
- operator!=(const allocator<_T1>&, const allocator<_T2>&)
- { return false; }
-
- // Inhibit implicit instantiations for required instantiations,
- // which are defined via explicit instantiations elsewhere.
- // NB: This syntax is a GNU extension.
- #if _GLIBCXX_EXTERN_TEMPLATE
- extern template class allocator<char>;
- extern template class allocator<wchar_t>;
- #endif
-
- // Undefine.
- #undef ___glibcxx_base_allocator
- } // namespace std
-
- #endif
-