v1/__memory/allocator_destructor.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H
0010 #define _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H
0011
0012 #include <__config>
0013 #include <__memory/allocator_traits.h>
0014
0015 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0016 #  pragma GCC system_header
0017 #endif
0018
0019 _LIBCPP_BEGIN_NAMESPACE_STD
0020
0021 template <class _Alloc>
0022 class __allocator_destructor {
0023   using __alloc_traits _LIBCPP_NODEBUG = allocator_traits<_Alloc>;
0024
0025 public:
0026   using pointer _LIBCPP_NODEBUG   = typename __alloc_traits::pointer;
0027   using size_type _LIBCPP_NODEBUG = typename __alloc_traits::size_type;
0028
0029 private:
0030   _Alloc& __alloc_;
0031   size_type __s_;
0032
0033 public:
0034   _LIBCPP_HIDE_FROM_ABI __allocator_destructor(_Alloc& __a, size_type __s) _NOEXCEPT : __alloc_(__a), __s_(__s) {}
0035   _LIBCPP_HIDE_FROM_ABI void operator()(pointer __p) _NOEXCEPT { __alloc_traits::deallocate(__alloc_, __p, __s_); }
0036 };
0037
0038 _LIBCPP_END_NAMESPACE_STD
0039
0040 #endif // _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H