windows-nt/Source/XPSP1/NT/base/crts/libw32/include/memory

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2020-09-26 03:20:57 -05:00
// memory standard header
#pragma once
#ifndef _MEMORY_
#define _MEMORY_
#include <iterator>
#include <xmemory>
#pragma pack(push,8)
#pragma warning(push,3)
_STD_BEGIN
// TEMPLATE FUNCTION get_temporary_buffer
template<class _Ty> inline
pair<_Ty _FARQ *, _PDFT>
get_temporary_buffer(_PDFT _Count)
{ // get raw temporary buffer of up to _Count elements
_Ty _FARQ *_Pbuf;
for (_Pbuf = 0; 0 < _Count; _Count /= 2)
if ((_Pbuf = (_Ty _FARQ *)operator new(
(_SIZT)_Count * sizeof (_Ty), nothrow)) != 0)
break;
return (pair<_Ty _FARQ *, _PDFT>(_Pbuf, _Count));
}
// TEMPLATE FUNCTION return_temporary_buffer
template<class _Ty> inline
void return_temporary_buffer(_Ty *_Pbuf)
{ // delete raw temporary buffer
operator delete(_Pbuf);
}
// TEMPLATE FUNCTION uninitialized_copy
template<class _InIt,
class _FwdIt> inline
_FwdIt uninitialized_copy(_InIt _First, _InIt _Last, _FwdIt _Dest)
{ // copy [_First, _Last) to raw _Dest
return (_Uninit_copy(_First, _Last, _Dest,
_Ptr_cat(_First, _Dest)));
}
template<class _InIt,
class _FwdIt> inline
_FwdIt _Uninit_copy(_InIt _First, _InIt _Last, _FwdIt _Dest,
_Nonscalar_ptr_iterator_tag)
{ // copy [_First, _Last) to raw _Dest, arbitrary type
_FwdIt _Next = _Dest;
_TRY_BEGIN
for (; _First != _Last; ++_Dest, ++_First)
_Construct(&*_Dest, *_First);
_CATCH_ALL
for (; _Next != _Dest; ++_Next)
_Destroy(&*_Next);
_RERAISE;
_CATCH_END
return (_Dest);
}
template<class _Ty> inline
_Ty *_Uninit_copy(const _Ty *_First, const _Ty *_Last, _Ty *_Dest,
_Scalar_ptr_iterator_tag)
{ // copy [_First, _Last) to raw _Dest, scalar type
size_t _Count = (size_t)(_Last - _First);
return ((_Ty *)memmove(&*_Dest, &*_First,
_Count * sizeof (*_First)) + _Count); // NB: non-overlapping move
}
// TEMPLATE FUNCTION _Uninitialized_copy WITH ALLOCATOR
template<class _InIt,
class _FwdIt,
class _Alloc> inline
_FwdIt _Uninitialized_copy(_InIt _First, _InIt _Last, _FwdIt _Dest,
_Alloc& _Al)
{ // copy [_First, _Last) to raw _Dest, using _Al
return (_Uninit_copy(_First, _Last, _Dest, _Al,
_Ptr_cat(_First, _Dest)));
}
template<class _InIt,
class _FwdIt,
class _Alloc> inline
_FwdIt _Uninit_copy(_InIt _First, _InIt _Last, _FwdIt _Dest,
_Alloc& _Al, _Nonscalar_ptr_iterator_tag)
{ // copy [_First, _Last) to raw _Dest, using _Al, arbitrary type
_FwdIt _Next = _Dest;
_TRY_BEGIN
for (; _First != _Last; ++_Dest, ++_First)
_Al.construct(_Dest, *_First);
_CATCH_ALL
for (; _Next != _Dest; ++_Next)
_Al.destroy(_Next);
_RERAISE;
_CATCH_END
return (_Dest);
}
template<class _Ty> inline
_Ty *_Uninit_copy(const _Ty *_First, const _Ty *_Last, _Ty *_Dest,
allocator<_Ty>&, _Scalar_ptr_iterator_tag)
{ // copy [_First, _Last) to raw _Dest, scalar type
size_t _Count = (size_t)(_Last - _First);
return ((_Ty *)memmove(&*_Dest, &*_First,
_Count * sizeof (*_First)) + _Count); // NB: non-overlapping move
}
// TEMPLATE FUNCTION uninitialized_fill
template<class _FwdIt,
class _Tval> inline
void uninitialized_fill(_FwdIt _First, _FwdIt _Last, const _Tval& _Val)
{ // copy _Val throughout raw [_First, _Last)
_Uninit_fill(_First, _Last, _Val, _Ptr_cat(_First, _First));
}
template<class _FwdIt,
class _Tval> inline
void _Uninit_fill(_FwdIt _First, _FwdIt _Last, const _Tval& _Val,
_Nonscalar_ptr_iterator_tag)
{ // copy _Val throughout raw [_First, _Last), arbitrary type
_FwdIt _Next = _First;
_TRY_BEGIN
for (; _First != _Last; ++_First)
_Construct(&*_First, _Val);
_CATCH_ALL
for (; _Next != _First; ++_Next)
_Destroy(&*_Next);
_RERAISE;
_CATCH_END
}
template<class _Ty,
class _Tval> inline
void _Uninit_fill(_Ty *_First, _Ty *_Last, const _Tval& _Val,
_Scalar_ptr_iterator_tag)
{ // copy _Val throughout raw [_First, _Last), scalar type
std::fill(_First, _Last, _Val);
}
// TEMPLATE FUNCTION uninitialized_fill_n
template<class _FwdIt,
class _Diff,
class _Tval> inline
void uninitialized_fill_n(_FwdIt _First, _Diff _Count, const _Tval& _Val)
{ // copy _Count *_Val to raw _First
_Uninit_fill_n(_First, _Count, _Val, _Ptr_cat(_First, _First));
}
template<class _FwdIt,
class _Diff,
class _Tval> inline
void _Uninit_fill_n(_FwdIt _First, _Diff _Count, const _Tval& _Val,
_Nonscalar_ptr_iterator_tag)
{ // copy _Count *_Val to raw _First, arbitrary type
_FwdIt _Next = _First;
_TRY_BEGIN
for (; 0 < _Count; --_Count, ++_First)
_Construct(&*_First, _Val);
_CATCH_ALL
for (; _Next != _First; ++_Next)
_Destroy(&*_Next);
_RERAISE;
_CATCH_END
}
template<class _Ty,
class _Diff,
class _Tval> inline
void _Uninit_fill_n(_Ty *_First, _Diff _Count, const _Tval& _Val,
_Scalar_ptr_iterator_tag)
{ // copy _Count *_Val to raw _First, scalar type
std::fill_n(_First, _Count, _Val);
}
// TEMPLATE FUNCTION _Uninitialized_fill_n WITH ALLOCATOR
template<class _FwdIt,
class _Diff,
class _Tval,
class _Alloc> inline
void _Uninitialized_fill_n(_FwdIt _First, _Diff _Count,
const _Tval& _Val, _Alloc& _Al)
{ // copy _Count *_Val to raw _First, using _Al
_Uninit_fill_n(_First, _Count, _Val, _Al,
_Ptr_cat(_First, _First));
}
template<class _FwdIt,
class _Diff,
class _Tval,
class _Alloc> inline
void _Uninit_fill_n(_FwdIt _First, _Diff _Count,
const _Tval& _Val, _Alloc& _Al, _Nonscalar_ptr_iterator_tag)
{ // copy _Count *_Val to raw _First, using _Al, arbitrary type
_FwdIt _Next = _First;
_TRY_BEGIN
for (; 0 < _Count; --_Count, ++_First)
_Al.construct(_First, _Val);
_CATCH_ALL
for (; _Next != _First; ++_Next)
_Al.destroy(_Next);
_RERAISE;
_CATCH_END
}
template<class _Ty,
class _Diff,
class _Tval> inline
void _Uninit_fill_n(_Ty *_First, _Diff _Count,
const _Tval& _Val, allocator<_Ty>&, _Scalar_ptr_iterator_tag)
{ // copy _Count *_Val to raw _First, using _Al, scalar type
fill_n(_First, _Count, _Val);
}
// TEMPLATE CLASS raw_storage_iterator
template<class _FwdIt,
class _Ty>
class raw_storage_iterator
: public _Outit
{ // wrap stores to raw buffer as output iterator
public:
typedef _FwdIt iterator_type; // retained
typedef _FwdIt iter_type; // retained
typedef _Ty element_type; // retained
explicit raw_storage_iterator(_FwdIt _First)
: _Next(_First)
{ // construct with iterator
}
raw_storage_iterator<_FwdIt, _Ty>& operator*()
{ // pretend to return designated value
return (*this);
}
raw_storage_iterator<_FwdIt, _Ty>& operator=(const _Ty& _Val)
{ // construct value designated by stored iterator
_Construct(&*_Next, _Val);
return (*this);
}
raw_storage_iterator<_FwdIt, _Ty>& operator++()
{ // preincrement
++_Next;
return (*this);
}
raw_storage_iterator<_FwdIt, _Ty> operator++(int)
{ // postincrement
raw_storage_iterator<_FwdIt, _Ty> _Ans = *this;
++_Next;
return (_Ans);
}
private:
_FwdIt _Next; // the stored iterator
};
// TEMPLATE CLASS _Temp_iterator
template<class _Ty>
class _Temp_iterator
: public _Outit
{ // wrap stores to temporary buffer as output iterator
public:
typedef _Ty _FARQ *_Pty;
_Temp_iterator(_PDFT _Count = 0)
{ // construct from desired temporary buffer size
pair<_Pty, _PDFT> _Pair =
std::get_temporary_buffer<_Ty>(_Count);
_Buf._Begin = _Pair.first;
_Buf._Current = _Pair.first;
_Buf._Hiwater = _Pair.first;
_Buf._Size = _Pair.second;
_Pbuf = &_Buf;
}
_Temp_iterator(const _Temp_iterator<_Ty>& _Right)
{ // construct from _Right (share active buffer)
_Buf._Begin = 0; // clear stored buffer, to be tidy
_Buf._Current = 0;
_Buf._Hiwater = 0;
_Buf._Size = 0;
*this = _Right;
}
~_Temp_iterator()
{ // destroy the object
if (_Buf._Begin != 0)
{ // destroy any constructed elements in buffer
for (_Pty _Next = _Buf._Begin;
_Next != _Buf._Hiwater; ++_Next)
_Destroy(&*_Next);
std::return_temporary_buffer(_Buf._Begin);
}
}
_Temp_iterator<_Ty>& operator=(const _Temp_iterator<_Ty>& _Right)
{ // assign _Right (share active buffer)
_Pbuf = _Right._Pbuf;
return (*this);
}
_Temp_iterator<_Ty>& operator=(const _Ty& _Val)
{ // assign or construct value into active buffer, and increment
if (_Pbuf->_Current < _Pbuf->_Hiwater)
*_Pbuf->_Current++ = _Val; // below high water mark, assign
else
{ // above high water mark, construct
_Construct(&*_Pbuf->_Current, _Val);
_Pbuf->_Hiwater = ++_Pbuf->_Current;
}
return (*this);
}
_Temp_iterator<_Ty>& operator*()
{ // pretend to return designated value
return (*this);
}
_Temp_iterator<_Ty>& operator++()
{ // pretend to preincrement
return (*this);
}
_Temp_iterator<_Ty>& operator++(int)
{ // pretend to postincrement
return (*this);
}
_Temp_iterator<_Ty>& _Init()
{ // set pointer at beginning of buffer
_Pbuf->_Current = _Pbuf->_Begin;
return (*this);
}
_Pty _First() const
{ // return pointer to beginning of buffer
return (_Pbuf->_Begin);
}
_Pty _Last() const
{ // return pointer past end of buffer contents
return (_Pbuf->_Current);
}
_PDFT _Maxlen() const
{ // return size of buffer
return (_Pbuf->_Size);
}
private:
struct _Bufpar
{ // control information for a temporary buffer
_Pty _Begin; // pointer to beginning of buffer
_Pty _Current; // pointer to next available element
_Pty _Hiwater; // pointer to first unconstructed element
_PDFT _Size; // length of buffer
};
_Bufpar _Buf; // buffer control stored in iterator
_Bufpar *_Pbuf; // pointer to active buffer control
};
// TEMPLATE CLASS auto_ptr
template<class _Ty>
class auto_ptr;
template<class _Ty>
struct auto_ptr_ref
{ // proxy reference for auto_ptr copying
auto_ptr_ref(auto_ptr<_Ty>& _Right)
: _Ref(_Right)
{ // construct from compatible auto_ptr
}
auto_ptr<_Ty>& _Ref; // reference to constructor argument
};
template<class _Ty>
class auto_ptr
{ // wrap an object pointer to ensure destruction
public:
typedef _Ty element_type;
explicit auto_ptr(_Ty *_Ptr = 0) _THROW0()
: _Myptr(_Ptr)
{ // construct from object pointer
}
auto_ptr(auto_ptr<_Ty>& _Right) _THROW0()
: _Myptr(_Right.release())
{ // construct by assuming pointer from _Right auto_ptr
}
auto_ptr(auto_ptr_ref<_Ty> _Right) _THROW0()
: _Myptr(_Right._Ref.release())
{ // construct by assuming pointer from _Right auto_ptr_ref
}
template<class _Other>
operator auto_ptr<_Other>() _THROW0()
{ // convert to compatible auto_ptr
return (auto_ptr<_Other>(*this));
}
template<class _Other>
operator auto_ptr_ref<_Other>() _THROW0()
{ // convert to compatible auto_ptr_ref
return (auto_ptr_ref<_Other>(*this));
}
template<class _Other>
auto_ptr<_Ty>& operator=(auto_ptr<_Other>& _Right) _THROW0()
{ // assign compatible _Right (assume pointer)
reset(_Right.release());
return (*this);
}
template<class _Other>
auto_ptr(auto_ptr<_Other>& _Right) _THROW0()
: _Myptr(_Right.release())
{ // construct by assuming pointer from _Right
}
auto_ptr<_Ty>& operator=(auto_ptr<_Ty>& _Right) _THROW0()
{ // assign compatible _Right (assume pointer)
reset(_Right.release());
return (*this);
}
auto_ptr<_Ty>& operator=(auto_ptr_ref<_Ty>& _Right) throw ()
{ // assign compatible _Right._Ref (assume pointer)
reset(_Right._Ref.release());
return (*this);
}
~auto_ptr()
{ // destroy the object
delete _Myptr;
}
_Ty& operator*() const _THROW0()
{ // return designated value
return (*get());
}
_Ty *operator->() const _THROW0()
{ // return pointer to class object
return (get());
}
_Ty *get() const _THROW0()
{ // return wrapped pointer
return (_Myptr);
}
_Ty *release() _THROW0()
{ // return wrapped pointer and give up ownership
_Ty *_Tmp = _Myptr;
_Myptr = 0;
return (_Tmp);
}
void reset(_Ty* _Ptr = 0)
{ // destroy designated object and store new pointer
if (_Ptr != _Myptr)
delete _Myptr;
_Myptr = _Ptr;
}
private:
_Ty *_Myptr; // the wrapped object pointer
};
_STD_END
#pragma warning(pop)
#pragma pack(pop)
#endif /* _MEMORY_ */
/*
* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
* Consult your license regarding permissions and restrictions.
*/
/*
* This file is derived from software bearing the following
* restrictions:
*
* Copyright (c) 1994
* Hewlett-Packard Company
*
* 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.
* Hewlett-Packard Company makes no representations about the
* suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
V3.10:0009 */