2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_MEMORY_RESOURCE
11 #define _LIBCPP_MEMORY_RESOURCE
14 memory_resource synopsis
20 class memory_resource;
22 bool operator==(const memory_resource& a,
23 const memory_resource& b) noexcept;
24 bool operator!=(const memory_resource& a,
25 const memory_resource& b) noexcept; // removed in C++20
27 template <class Tp> class polymorphic_allocator;
29 template <class T1, class T2>
30 bool operator==(const polymorphic_allocator<T1>& a,
31 const polymorphic_allocator<T2>& b) noexcept;
32 template <class T1, class T2>
33 bool operator!=(const polymorphic_allocator<T1>& a,
34 const polymorphic_allocator<T2>& b) noexcept; // removed in C++20
36 // Global memory resources
37 memory_resource* set_default_resource(memory_resource* r) noexcept;
38 memory_resource* get_default_resource() noexcept;
39 memory_resource* new_delete_resource() noexcept;
40 memory_resource* null_memory_resource() noexcept;
42 // Pool resource classes
44 class synchronized_pool_resource;
45 class unsynchronized_pool_resource;
46 class monotonic_buffer_resource;
48 } // namespace std::pmr
52 #include <__cxx03/__config>
54 #if _LIBCPP_STD_VER >= 17
55 # include <__cxx03/__memory_resource/memory_resource.h>
56 # include <__cxx03/__memory_resource/monotonic_buffer_resource.h>
57 # include <__cxx03/__memory_resource/polymorphic_allocator.h>
58 # include <__cxx03/__memory_resource/pool_options.h>
59 # include <__cxx03/__memory_resource/synchronized_pool_resource.h>
60 # include <__cxx03/__memory_resource/unsynchronized_pool_resource.h>
63 #include <__cxx03/version>
65 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
66 # pragma GCC system_header
69 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 14
70 # include <__cxx03/cstddef>
71 # include <__cxx03/cstdint>
72 # include <__cxx03/limits>
73 # include <__cxx03/mutex>
74 # include <__cxx03/new>
75 # include <__cxx03/stdexcept>
76 # include <__cxx03/tuple>
79 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
80 # include <__cxx03/stdexcept>
83 #endif /* _LIBCPP_MEMORY_RESOURCE */