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251 lines
6.2 KiB
251 lines
6.2 KiB
// xmemory internal header (from <memory>)
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#pragma once
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#ifndef _XMEMORY_
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#define _XMEMORY_
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#include <cstdlib>
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#include <new>
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#include <xutility>
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#pragma pack(push,8)
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#pragma warning(push,3)
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#pragma warning(disable: 4100)
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#ifndef _FARQ /* specify standard memory model */
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#define _FARQ
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#define _PDFT ptrdiff_t
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#define _SIZT size_t
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#endif
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#define _CPOINTER_X(T, A) \
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typename A::_TEMPLATE_MEMBER rebind<T>::other::const_pointer
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#define _CREFERENCE_X(T, A) \
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typename A::_TEMPLATE_MEMBER rebind<T>::other::const_reference
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#define _POINTER_X(T, A) \
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typename A::_TEMPLATE_MEMBER rebind<T>::other::pointer
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#define _REFERENCE_X(T, A) \
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typename A::_TEMPLATE_MEMBER rebind<T>::other::reference
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_STD_BEGIN
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// TEMPLATE FUNCTION _Allocate
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template<class _Ty> inline
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_Ty _FARQ *_Allocate(_SIZT _Count, _Ty _FARQ *)
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{ // allocate storage for _Count elements of type _Ty
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return ((_Ty _FARQ *)operator new(_Count * sizeof (_Ty)));
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}
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// TEMPLATE FUNCTION _Construct
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template<class _T1,
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class _T2> inline
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void _Construct(_T1 _FARQ *_Ptr, const _T2& _Val)
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{ // construct object at _Ptr with value _Val
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new ((void _FARQ *)_Ptr) _T1(_Val);
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}
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// TEMPLATE FUNCTION _Destroy
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template<class _Ty> inline
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void _Destroy(_Ty _FARQ *_Ptr)
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{ // destroy object at _Ptr
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_DESTRUCTOR(_Ty, _Ptr);
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}
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template<> inline
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void _Destroy(char _FARQ *)
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{ // destroy a char (do nothing)
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}
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template<> inline
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void _Destroy(wchar_t _FARQ *)
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{ // destroy a wchar_t (do nothing)
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}
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#ifdef _CRTBLD_NATIVE_WCHAR_T
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template<> inline
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void _Destroy(unsigned short _FARQ *)
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{ // destroy a unsigned short (do nothing)
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}
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#endif
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// TEMPLATE CLASS allocator
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template<class _Ty>
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class allocator
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{ // generic allocator for objects of class _Ty
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public:
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typedef _SIZT size_type;
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typedef _PDFT difference_type;
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typedef _Ty _FARQ *pointer;
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typedef const _Ty _FARQ *const_pointer;
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typedef _Ty _FARQ& reference;
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typedef const _Ty _FARQ& const_reference;
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typedef _Ty value_type;
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template<class _Other>
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struct rebind
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{ // convert an allocator<_Ty> to an allocator <_Other>
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typedef allocator<_Other> other;
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};
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pointer address(reference _Val) const
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{ // return address of mutable _Val
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return (&_Val);
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}
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const_pointer address(const_reference _Val) const
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{ // return address of nonmutable _Val
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return (&_Val);
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}
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allocator()
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{ // construct default allocator (do nothing)
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}
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allocator(const allocator<_Ty>&)
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{ // construct by copying (do nothing)
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}
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template<class _Other>
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allocator(const allocator<_Other>&)
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{ // construct from a related allocator (do nothing)
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}
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template<class _Other>
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allocator<_Ty>& operator=(const allocator<_Other>&)
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{ // assign from a related allocator (do nothing)
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return (*this);
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}
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template<class _Other>
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pointer allocate(size_type _Count, const _Other *)
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{ // allocate array of _Count elements, ignore hint
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// don't call _Allocate directly, in case class is dllimport
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return (allocate(_Count));
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}
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pointer allocate(size_type _Count)
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{ // allocate array of _Count elements
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return (_Allocate(_Count, (pointer)0));
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}
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void deallocate(pointer _Ptr, size_type)
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{ // deallocate object at _Ptr, ignore size
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operator delete(_Ptr);
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}
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void construct(pointer _Ptr, const _Ty& _Val)
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{ // construct object at _Ptr with value _Val
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_Construct(_Ptr, _Val);
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}
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void destroy(pointer _Ptr)
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{ // destroy object at _Ptr
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_Destroy(_Ptr);
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}
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_SIZT max_size() const
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{ // estimate maximum array size
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_SIZT _Count = (_SIZT)(-1) / sizeof (_Ty);
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return (0 < _Count ? _Count : 1);
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}
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};
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// allocator TEMPLATE OPERATORS
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template<class _Ty,
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class _Other> inline
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bool operator==(const allocator<_Ty>&, const allocator<_Other>&)
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{ // test for allocator equality (always true)
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return (true);
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}
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template<class _Ty,
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class _Other> inline
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bool operator!=(const allocator<_Ty>&, const allocator<_Other>&)
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{ // test for allocator inequality (always false)
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return (false);
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}
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// CLASS allocator<void>
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template<> class _CRTIMP2 allocator<void>
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{ // generic allocator for type void
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public:
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typedef void _Ty;
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typedef _Ty _FARQ *pointer;
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typedef const _Ty _FARQ *const_pointer;
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typedef _Ty value_type;
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template<class _Other>
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struct rebind
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{ // convert an allocator<void> to an allocator <_Other>
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typedef allocator<_Other> other;
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};
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allocator()
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{ // construct default allocator (do nothing)
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}
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allocator(const allocator<_Ty>&)
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{ // construct by copying (do nothing)
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}
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template<class _Other>
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allocator(const allocator<_Other>&)
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{ // construct from related allocator (do nothing)
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}
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template<class _Other>
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allocator<_Ty>& operator=(const allocator<_Other>&)
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{ // assign from a related allocator (do nothing)
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return (*this);
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}
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};
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// TEMPLATE FUNCTION _Destroy_range
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template<class _Ty,
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class _Alloc> inline
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void _Destroy_range(_Ty *_First, _Ty *_Last, _Alloc& _Al)
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{ // destroy [_First, _Last)
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_Destroy_range(_First, _Last, _Al, _Ptr_cat(_First, _Last));
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}
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template<class _Ty,
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class _Alloc> inline
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void _Destroy_range(_Ty *_First, _Ty *_Last, _Alloc& _Al,
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_Nonscalar_ptr_iterator_tag)
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{ // destroy [_First, _Last), arbitrary type
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for (; _First != _Last; ++_First)
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_Al.destroy(_First);
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}
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template<class _Ty,
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class _Alloc> inline
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void _Destroy_range(_Ty *_First, _Ty *_Last, _Alloc& _Al,
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_Scalar_ptr_iterator_tag)
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{ // destroy [_First, _Last), scalar type (do nothing)
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}
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_STD_END
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#pragma warning(default: 4100)
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#pragma warning(pop)
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#pragma pack(pop)
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#endif /* _XMEMORY_ */
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/*
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* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
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* Consult your license regarding permissions and restrictions.
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*/
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/*
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* This file is derived from software bearing the following
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* restrictions:
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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
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* software and its documentation for any purpose is hereby
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* granted without fee, provided that the above copyright notice
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* appear in all copies and that both that copyright notice and
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* this permission notice appear in supporting documentation.
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* Hewlett-Packard Company makes no representations about the
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* suitability of this software for any purpose. It is provided
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* "as is" without express or implied warranty.
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V3.10:0009 */
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