libstdc++: c++allocator.h Source File

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c++allocator.h
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1// Base to std::allocator -*- C++ -*-
2
3// Copyright (C) 2004-2026 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 3, 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/c++allocator.h
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{memory}
28 */
29
30#ifndef _GLIBCXX_CXX_ALLOCATOR_H
31#define _GLIBCXX_CXX_ALLOCATOR_H 1
32
33#include <bits/new_allocator.h>
34
35#if __cplusplus >= 201103L
36namespace std
37{
38 /**
39 * @brief An alias to the base class for std::allocator.
40 *
41 * Used to set the std::allocator base class to std::__new_allocator.
42 *
43 * @ingroup allocators
44 * @tparam _Tp Type of allocated object.
45 */
46 template<typename _Tp>
47 using __allocator_base = __new_allocator<_Tp>;
48}
49#else
50// Define __new_allocator as the base class to std::allocator.
51# define __allocator_base __new_allocator
52#endif
53
54#ifndef _GLIBCXX_SANITIZE_STD_ALLOCATOR
55# if defined(__SANITIZE_ADDRESS__)
56# define _GLIBCXX_SANITIZE_STD_ALLOCATOR 1
57# elif defined __has_feature
58# if __has_feature(address_sanitizer)
59# define _GLIBCXX_SANITIZE_STD_ALLOCATOR 1
60# endif
61# endif
62#endif
63
64#endif
std::__allocator_base
__new_allocator< _Tp > __allocator_base
An alias to the base class for std::allocator.
Definition c++allocator.h:47
std
ISO C++ entities toplevel namespace is std.
std::__new_allocator
An allocator that uses global new, as per C++03 [20.4.1].
Definition bits/new_allocator.h:64
new_allocator.h