ext/new_allocator.h
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// Allocator that wraps operator new -*- C++ -*-
// Copyright (C) 2001-2024 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/>.
/** @file ext/new_allocator.h
* This file is a GNU extension to the Standard C++ Library.
*/
#ifndef _NEW_ALLOCATOR_H
#define _NEW_ALLOCATOR_H 1
#include <bits/requires_hosted.h> // GNU extensions are currently omitted
#include <bits/new_allocator.h>
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
* @brief An allocator that uses global `new`, as per C++03 [20.4.1].
* @ingroup allocators
*
* This is precisely the allocator defined in the C++ Standard.
* - all allocation calls `operator new`
* - all deallocation calls `operator delete`
*
* This is a non-standard extension that can be used to guarantee
* allocation from `new` even if the library has been configured to
* use a different implementation for `std::allocator`.
*
* @tparam _Tp Type of allocated object.
*
* @headerfile ext/new_allocator.h
*/
template<typename _Tp>
class new_allocator : public std::__new_allocator<_Tp>
{
public:
#if __cplusplus <= 201703L
template<typename _Tp1>
struct rebind
{ typedef new_allocator<_Tp1> other; };
#endif
new_allocator() _GLIBCXX_USE_NOEXCEPT { }
new_allocator(const new_allocator&) _GLIBCXX_USE_NOEXCEPT { }
template<typename _Tp1>
new_allocator(const new_allocator<_Tp1>&) _GLIBCXX_USE_NOEXCEPT { }
};
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif
requires_hosted.h
__gnu_cxx
GNU extensions for public use.
std::__new_allocator
An allocator that uses global new, as per C++03 [20.4.1].
Definition bits/new_allocator.h:64
__gnu_cxx::other
new_allocator.h