# std::pmr::get_default_resource

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< cpp‎ | memory

Defined in header `<memory_resource>` |  |
std::pmr::memory_resource* get_default_resource() noexcept; |  | (since C++17)

Gets the default memory resource pointer.

The default memory resource pointer is used by certain facilities when an explicit memory resource is not supplied. The initial default memory resource pointer is the return value of std::pmr::new_delete_resource.

This function is thread-safe. Previous call to std::pmr::set_default_resource synchronizes with (see std::memory_order) the subsequent `std::pmr::get_default_resource` calls.

### Return value

Returns the value of the default memory resource pointer.

### See also

set_default_resource (C++17) | sets the default std::pmr::memory_resource (function)
new_delete_resource (C++17) | returns a static program-wide std::pmr::memory_resource that uses the global operator new and operator delete to allocate and deallocate memory (function)

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