[thread.req.native] (original) (raw)
Several classes described in this Clause have members native_handle_type andnative_handle.
The presence of these members and their semantics isimplementation-defined.
[Note 1:
These members allow implementations to provide access to implementation details.
Their names are specified to facilitate portable compile-time detection.
Actual use of these members is inherently non-portable.
— _end note_]