Struct FlagPtr 

pub struct FlagPtr<T> { /* private fields */ }

A packed pointer type that steals some bits to make room for a 3-bit flag

T must be aligned to 8 bytes:

struct MyStruct { }

If you don’t control the alignment requirements of T, consider using the wrapper Align8<T> in this module instead:

struct MaybeUnaligned { b: bool }
let ptr : FlagPtr<Align8<MaybeUnaligned>> = Default::default();

Implementations

impl<T> FlagPtr<T>

pub fn get_ptr(&self) -> *mut T

pub fn set_ptr(&mut self, ptr: *mut T)

This function panics if ptr is not 8 byte aligned.

pub fn get_flag(&self) -> usize

pub fn set_flag(&mut self, flag: usize)

This function panics if flag is greater than seven (0b111).

Trait Implementations

impl<T> Default for FlagPtr<T>

fn default() -> Self

Returns the “default value” for a type.