88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*/
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// Inclusion of this file is DEPRECATED. This is the original HP
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// default allocator. It is provided only for backward compatibility.
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// This file WILL BE REMOVED in a future release.
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//
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// DO NOT USE THIS FILE unless you have an old container implementation
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// that requires an allocator with the HP-style interface.
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//
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// Standard-conforming allocators have a very different interface. The
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// standard default allocator is declared in the header <memory>.
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#ifndef _CPP_BACKWARD_DEFALLOC_H
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#define _CPP_BACKWARD_DEFALLOC_H 1
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#include "new.h"
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#include <stddef.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "iostream.h"
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#include "algobase.h"
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template <class _Tp>
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inline _Tp* allocate(ptrdiff_t __size, _Tp*) {
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set_new_handler(0);
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_Tp* __tmp = (_Tp*)(::operator new((size_t)(__size * sizeof(_Tp))));
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if (__tmp == 0) {
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cerr << "out of memory" << endl;
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exit(1);
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}
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return __tmp;
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}
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template <class _Tp>
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inline void deallocate(_Tp* __buffer) {
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::operator delete(__buffer);
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}
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template <class _Tp>
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class allocator {
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public:
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typedef _Tp value_type;
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typedef _Tp* pointer;
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typedef const _Tp* const_pointer;
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typedef _Tp& reference;
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typedef const _Tp& const_reference;
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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pointer allocate(size_type __n) {
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return ::allocate((difference_type)__n, (pointer)0);
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}
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void deallocate(pointer __p) { ::deallocate(__p); }
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pointer address(reference __x) { return (pointer)&__x; }
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const_pointer const_address(const_reference __x) {
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return (const_pointer)&__x;
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}
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size_type init_page_size() {
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return max(size_type(1), size_type(4096/sizeof(_Tp)));
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}
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size_type max_size() const {
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return max(size_type(1), size_type(UINT_MAX/sizeof(_Tp)));
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}
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};
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class allocator<void> {
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public:
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typedef void* pointer;
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};
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#endif /* _CPP_BACKWARD_DEFALLOC_H */
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