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Diffstat (limited to 'contrib/libstdc++/include/bits/allocator_traits.h')
| -rw-r--r-- | contrib/libstdc++/include/bits/allocator_traits.h | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/contrib/libstdc++/include/bits/allocator_traits.h b/contrib/libstdc++/include/bits/allocator_traits.h deleted file mode 100644 index 93bae7a..0000000 --- a/contrib/libstdc++/include/bits/allocator_traits.h +++ /dev/null @@ -1,237 +0,0 @@ -// Allocators -*- C++ -*- - -// Copyright (C) 2001, 2002, 2003 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. - */ - -#ifndef _ALLOCATOR_TRAITS_H -#define _ALLOCATOR_TRAITS_H 1 - -#include <cstddef> - -namespace std -{ - /** - * @if maint - * This is used primarily (only?) in _Alloc_traits and other places to - * help provide the _Alloc_type typedef. All it does is forward the - * requests after some minimal checking. - * - * This is neither "standard"-conforming nor "SGI". The _Alloc parameter - * must be "SGI" style. - * @endif - * (See @link Allocators allocators info @endlink for more.) - */ - template<typename _Tp, typename _Alloc> - class __simple_alloc - { - public: - static _Tp* - allocate(size_t __n) - { - _Tp* __ret = 0; - if (__n) - __ret = static_cast<_Tp*>(_Alloc::allocate(__n * sizeof(_Tp))); - return __ret; - } - - static _Tp* - allocate() - { return (_Tp*) _Alloc::allocate(sizeof (_Tp)); } - - static void - deallocate(_Tp* __p, size_t __n) - { if (0 != __n) _Alloc::deallocate(__p, __n * sizeof (_Tp)); } - - static void - deallocate(_Tp* __p) - { _Alloc::deallocate(__p, sizeof (_Tp)); } - }; - - - /** - * @if maint - * Allocator adaptor to turn an "SGI" style allocator (e.g., - * __alloc, __malloc_alloc) into a "standard" conforming - * allocator. Note that this adaptor does *not* assume that all - * objects of the underlying alloc class are identical, nor does it - * assume that all of the underlying alloc's member functions are - * static member functions. Note, also, that __allocator<_Tp, - * __alloc> is essentially the same thing as allocator<_Tp>. - * @endif - * (See @link Allocators allocators info @endlink for more.) - */ - template<typename _Tp, typename _Alloc> - struct __allocator - { - _Alloc __underlying_alloc; - - 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, _Alloc> other; }; - - __allocator() throw() { } - - __allocator(const __allocator& __a) throw() - : __underlying_alloc(__a.__underlying_alloc) { } - - template<typename _Tp1> - __allocator(const __allocator<_Tp1, _Alloc>& __a) throw() - : __underlying_alloc(__a.__underlying_alloc) { } - - ~__allocator() throw() { } - - pointer - address(reference __x) const { return &__x; } - - const_pointer - address(const_reference __x) const { return &__x; } - - // NB: __n is permitted to be 0. The C++ standard says nothing - // about what the return value is when __n == 0. - _Tp* - allocate(size_type __n, const void* = 0) - { - _Tp* __ret = 0; - if (__n) - __ret = static_cast<_Tp*>(_Alloc::allocate(__n * sizeof(_Tp))); - return __ret; - } - - // __p is not permitted to be a null pointer. - void - deallocate(pointer __p, size_type __n) - { __underlying_alloc.deallocate(__p, __n * sizeof(_Tp)); } - - size_type - max_size() const throw() { return size_t(-1) / sizeof(_Tp); } - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 402. wrong new expression in [some_]allocator::construct - void - construct(pointer __p, const _Tp& __val) { ::new(__p) _Tp(__val); } - - void - destroy(pointer __p) { __p->~_Tp(); } - }; - - template<typename _Alloc> - struct __allocator<void, _Alloc> - { - 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, _Alloc> other; }; - }; - - template<typename _Tp, typename _Alloc> - inline bool - operator==(const __allocator<_Tp,_Alloc>& __a1, - const __allocator<_Tp,_Alloc>& __a2) - { return __a1.__underlying_alloc == __a2.__underlying_alloc; } - - template<typename _Tp, typename _Alloc> - inline bool - operator!=(const __allocator<_Tp, _Alloc>& __a1, - const __allocator<_Tp, _Alloc>& __a2) - { return __a1.__underlying_alloc != __a2.__underlying_alloc; } - - - /** - * @if maint - * Another allocator adaptor: _Alloc_traits. This serves two purposes. - * First, make it possible to write containers that can use either "SGI" - * style allocators or "standard" allocators. Second, provide a mechanism - * so that containers can query whether or not the allocator has distinct - * instances. If not, the container can avoid wasting a word of memory to - * store an empty object. For examples of use, see stl_vector.h, etc, or - * any of the other classes derived from this one. - * - * This adaptor uses partial specialization. The general case of - * _Alloc_traits<_Tp, _Alloc> assumes that _Alloc is a - * standard-conforming allocator, possibly with non-equal instances and - * non-static members. (It still behaves correctly even if _Alloc has - * static member and if all instances are equal. Refinements affect - * performance, not correctness.) - * - * There are always two members: allocator_type, which is a standard- - * conforming allocator type for allocating objects of type _Tp, and - * _S_instanceless, a static const member of type bool. If - * _S_instanceless is true, this means that there is no difference - * between any two instances of type allocator_type. Furthermore, if - * _S_instanceless is true, then _Alloc_traits has one additional - * member: _Alloc_type. This type encapsulates allocation and - * deallocation of objects of type _Tp through a static interface; it - * has two member functions, whose signatures are - * - * - static _Tp* allocate(size_t) - * - static void deallocate(_Tp*, size_t) - * - * The size_t parameters are "standard" style (see top of - * allocator.h) in that they take counts, not sizes. - * - * @endif - * (See @link Allocators allocators info @endlink for more.) - */ - // The fully general version. - template<typename _Tp, typename _Allocator> - struct _Alloc_traits - { - static const bool _S_instanceless = false; - typedef typename _Allocator::template rebind<_Tp>::other allocator_type; - }; - - template<typename _Tp, typename _Allocator> - const bool _Alloc_traits<_Tp, _Allocator>::_S_instanceless; -} // namespace std - -#endif |
