1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
// Memory extensions -*- C++ -*-
// Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
// 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 3, 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/*
*
* 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.
*
*
* Copyright (c) 1996
* 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.
*/
/** @file ext/memory
* This file is a GNU extension to the Standard C++ Library (possibly
* containing extensions from the HP/SGI STL subset).
*/
#ifndef _EXT_MEMORY
#define _EXT_MEMORY 1
#pragma GCC system_header
#include <memory>
#include <bits/stl_tempbuf.h>
_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
using std::ptrdiff_t;
using std::pair;
using std::__iterator_category;
using std::_Temporary_buffer;
template<typename _InputIter, typename _Size, typename _ForwardIter>
pair<_InputIter, _ForwardIter>
__uninitialized_copy_n(_InputIter __first, _Size __count,
_ForwardIter __result, std::input_iterator_tag)
{
_ForwardIter __cur = __result;
__try
{
for (; __count > 0 ; --__count, ++__first, ++__cur)
std::_Construct(&*__cur, *__first);
return pair<_InputIter, _ForwardIter>(__first, __cur);
}
__catch(...)
{
std::_Destroy(__result, __cur);
__throw_exception_again;
}
}
template<typename _RandomAccessIter, typename _Size, typename _ForwardIter>
inline pair<_RandomAccessIter, _ForwardIter>
__uninitialized_copy_n(_RandomAccessIter __first, _Size __count,
_ForwardIter __result,
std::random_access_iterator_tag)
{
_RandomAccessIter __last = __first + __count;
return (pair<_RandomAccessIter, _ForwardIter>
(__last, std::uninitialized_copy(__first, __last, __result)));
}
template<typename _InputIter, typename _Size, typename _ForwardIter>
inline pair<_InputIter, _ForwardIter>
__uninitialized_copy_n(_InputIter __first, _Size __count,
_ForwardIter __result)
{ return __uninitialized_copy_n(__first, __count, __result,
__iterator_category(__first)); }
/**
* @brief Copies the range [first,last) into result.
* @param first An input iterator.
* @param last An input iterator.
* @param result An output iterator.
* @return result + (first - last)
* @ingroup SGIextensions
*
* Like copy(), but does not require an initialized output range.
*/
template<typename _InputIter, typename _Size, typename _ForwardIter>
inline pair<_InputIter, _ForwardIter>
uninitialized_copy_n(_InputIter __first, _Size __count,
_ForwardIter __result)
{ return __uninitialized_copy_n(__first, __count, __result,
__iterator_category(__first)); }
// An alternative version of uninitialized_copy_n that constructs
// and destroys objects with a user-provided allocator.
template<typename _InputIter, typename _Size, typename _ForwardIter,
typename _Allocator>
pair<_InputIter, _ForwardIter>
__uninitialized_copy_n_a(_InputIter __first, _Size __count,
_ForwardIter __result,
_Allocator __alloc)
{
_ForwardIter __cur = __result;
__try
{
for (; __count > 0 ; --__count, ++__first, ++__cur)
__alloc.construct(&*__cur, *__first);
return pair<_InputIter, _ForwardIter>(__first, __cur);
}
__catch(...)
{
std::_Destroy(__result, __cur, __alloc);
__throw_exception_again;
}
}
template<typename _InputIter, typename _Size, typename _ForwardIter,
typename _Tp>
inline pair<_InputIter, _ForwardIter>
__uninitialized_copy_n_a(_InputIter __first, _Size __count,
_ForwardIter __result,
std::allocator<_Tp>)
{
return uninitialized_copy_n(__first, __count, __result);
}
/**
* This class provides similar behavior and semantics of the standard
* functions get_temporary_buffer() and return_temporary_buffer(), but
* encapsulated in a type vaguely resembling a standard container.
*
* By default, a temporary_buffer<Iter> stores space for objects of
* whatever type the Iter iterator points to. It is constructed from a
* typical [first,last) range, and provides the begin(), end(), size()
* functions, as well as requested_size(). For non-trivial types, copies
* of *first will be used to initialize the storage.
*
* @c malloc is used to obtain underlying storage.
*
* Like get_temporary_buffer(), not all the requested memory may be
* available. Ideally, the created buffer will be large enough to hold a
* copy of [first,last), but if size() is less than requested_size(),
* then this didn't happen.
*
* @ingroup SGIextensions
*/
template <class _ForwardIterator, class _Tp
= typename std::iterator_traits<_ForwardIterator>::value_type >
struct temporary_buffer : public _Temporary_buffer<_ForwardIterator, _Tp>
{
/// Requests storage large enough to hold a copy of [first,last).
temporary_buffer(_ForwardIterator __first, _ForwardIterator __last)
: _Temporary_buffer<_ForwardIterator, _Tp>(__first, __last) { }
/// Destroys objects and frees storage.
~temporary_buffer() { }
};
_GLIBCXX_END_NAMESPACE
#endif
|
