cetl::pf17::pmr::deviant Namespace Reference

Classes
class	basic_monotonic_buffer_resource
class	MaxAlignNewDeleteResource
struct	memory_resource_traits

Functions
memory_resource *	set_new_delete_resource (memory_resource *r) noexcept

Detailed Description

Types or methods that deviate from the C++17 specification.

Function Documentation

set_new_delete_resource()

memory_resource * cetl::pf17::pmr::deviant::set_new_delete_resource ( memory_resource * r )

inlinenoexcept

Replace the memory_resource returned from cetl::pf17::pmr::new_delete_resource().

Because C++14 does not provide a portable way to obtain over-aligned memory from the system, which means the default "new_delete" implementation used by CETL cannot allocate over-aligned memory, this deviation from the C++17 specification is provided to allow replacement of this implementation by the user.

Note

This implementation uses std::atomic::exchange to avoid data races with cetl::pf17::pmr::new_delete_resource().

Parameters

r	If nullptr then the implementation returned from cetl::pf17::pmr::new_delete_resource() is set to a static-duration instance of cetl::pf17::pmr::MaxAlignNewDeleteResource otherwise cetl::pf17::pmr::new_delete_resource() is set to r.

Returns

The previous value returned by cetl::pf17::pmr::new_delete_resource().