std::experimental::pmr::synchronized_pool_resource:: upstream_resource

From cppreference.com

memory_resource * upstream_resource ( ) const ;		(library fundamentals TS)

Returns a pointer to the upstream memory resource. This is the same value as the upstream argument passed to the constructor of this object.

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Metaprogramming library (C++11)
Diagnostics library
General utilities library
Strings library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Numerics library
Localizations library
Input/output library
Filesystem library (C++17)
Regular expressions library (C++11)
Concurrency support library (C++11)
Execution support library (C++26)
Technical specifications
Symbols index
External libraries

experimental::optional
experimental::any
experimental::basic_string_view
experimental::sample
experimental::shared_ptr
experimental::weak_ptr
experimental::apply
experimental::invocation_type experimental::raw_invocation_type
experimental::search
experimental::default_searcher experimental::make_default_searcher
experimental::boyer_moore_searcher experimental::make_boyer_moore_searcher
experimental::boyer_moore_horspool_searcher experimental::make_boyer_moore_horspool_searcher
Type-erased and polymorphic allocators
Variable templates for type traits

polymorphic_allocator
Convenience aliases for containers using `polymorphic_allocator`
Memory resource classes
memory_resource
synchronized_pool_resource
unsynchronized_pool_resource
monotonic_buffer_resource
resource_adaptor
Global memory resources
new_delete_resource
null_memory_resource
get_default_resource
set_default_resource
Type-erased allocator support for existing classes
function
packaged_task
promise

synchronized_pool_resource::synchronized_pool_resource
synchronized_pool_resource::~synchronized_pool_resource
Public member functions
synchronized_pool_resource::release
synchronized_pool_resource::upstream_resource
synchronized_pool_resource::options
Protected member functions
synchronized_pool_resource::do_allocate
synchronized_pool_resource::do_deallocate
synchronized_pool_resource::do_is_equal