1// Backward-compat support -*- C++ -*-
2
3// Copyright (C) 2001 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30/*
31 *
32 * Copyright (c) 1994
33 * Hewlett-Packard Company
34 *
35 * Permission to use, copy, modify, distribute and sell this software
36 * and its documentation for any purpose is hereby granted without fee,
37 * provided that the above copyright notice appear in all copies and
38 * that both that copyright notice and this permission notice appear
39 * in supporting documentation.  Hewlett-Packard Company makes no
40 * representations about the suitability of this software for any
41 * purpose.  It is provided "as is" without express or implied warranty.
42 *
43 */
44
45// Inclusion of this file is DEPRECATED.  This is the original HP
46// default allocator.  It is provided only for backward compatibility.
47// This file WILL BE REMOVED in a future release.
48//
49// DO NOT USE THIS FILE unless you have an old container implementation
50// that requires an allocator with the HP-style interface.
51//
52// Standard-conforming allocators have a very different interface.  The
53// standard default allocator is declared in the header <memory>.
54
55#ifndef _BACKWARD_DEFALLOC_H
56#define _BACKWARD_DEFALLOC_H 1
57
58#include "backward_warning.h"
59#include "new.h"
60#include <stddef.h>
61#include <stdlib.h>
62#include <limits.h>
63#include "iostream.h"
64#include "algobase.h"
65
66
67template <class _Tp>
68inline _Tp* allocate(ptrdiff_t __size, _Tp*) {
69    set_new_handler(0);
70    _Tp* __tmp = (_Tp*)(::operator new((size_t)(__size * sizeof(_Tp))));
71    if (__tmp == 0) {
72	cerr << "out of memory" << endl;
73	exit(1);
74    }
75    return __tmp;
76}
77
78
79template <class _Tp>
80inline void deallocate(_Tp* __buffer) {
81    ::operator delete(__buffer);
82}
83
84template <class _Tp>
85class allocator {
86public:
87    typedef _Tp value_type;
88    typedef _Tp* pointer;
89    typedef const _Tp* const_pointer;
90    typedef _Tp& reference;
91    typedef const _Tp& const_reference;
92    typedef size_t size_type;
93    typedef ptrdiff_t difference_type;
94    pointer allocate(size_type __n) {
95	return ::allocate((difference_type)__n, (pointer)0);
96    }
97    void deallocate(pointer __p) { ::deallocate(__p); }
98    pointer address(reference __x) { return (pointer)&__x; }
99    const_pointer const_address(const_reference __x) {
100	return (const_pointer)&__x;
101    }
102    size_type init_page_size() {
103	return max(size_type(1), size_type(4096/sizeof(_Tp)));
104    }
105    size_type max_size() const {
106	return max(size_type(1), size_type(UINT_MAX/sizeof(_Tp)));
107    }
108};
109
110class allocator<void> {
111public:
112    typedef void* pointer;
113};
114
115
116
117#endif /* _BACKWARD_DEFALLOC_H */
118