xref: /llvm-project/libcxx/include/__memory/allocator_destructor.h (revision 3b8faee6c6f44343c3f9de76c40ff305f72dfcd6)
1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H
10 #define _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H
11 
12 #include <__config>
13 #include <__memory/allocator_traits.h>
14 
15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16 #  pragma GCC system_header
17 #endif
18 
19 _LIBCPP_BEGIN_NAMESPACE_STD
20 
21 template <class _Alloc>
22 class __allocator_destructor {
23   using __alloc_traits _LIBCPP_NODEBUG = allocator_traits<_Alloc>;
24 
25 public:
26   using pointer _LIBCPP_NODEBUG   = typename __alloc_traits::pointer;
27   using size_type _LIBCPP_NODEBUG = typename __alloc_traits::size_type;
28 
29 private:
30   _Alloc& __alloc_;
31   size_type __s_;
32 
33 public:
34   _LIBCPP_HIDE_FROM_ABI __allocator_destructor(_Alloc& __a, size_type __s) _NOEXCEPT : __alloc_(__a), __s_(__s) {}
35   _LIBCPP_HIDE_FROM_ABI void operator()(pointer __p) _NOEXCEPT { __alloc_traits::deallocate(__alloc_, __p, __s_); }
36 };
37 
38 _LIBCPP_END_NAMESPACE_STD
39 
40 #endif // _LIBCPP___MEMORY_ALLOCATOR_DESTRUCTOR_H
41