Struct SharedSingleton

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

Single producer Single consumer Shared Singleton Note that different from RefCell, the shared singleton cannot be read until written by the producer

The inner UnsafeCell can be replaced by RefCell is a much more sophisticated implementation with checks for multiple borrows. Here this version removes the safeguards assuming users handle the rest. The only protection is the tristate owner flag which does not allow allocating for write more than once before commit

Implementations

impl<T> SharedSingleton<T>

pub const INIT_0: SharedSingleton<T>

pub const fn new() -> Self

pub fn is_vacant(&self) -> bool

pub fn try_write(&self) -> Option<&mut T>

Returns mutable reference of T if singleton is vacant

pub fn write_done(&self) -> Result<(), ErrCode>

Pass ownership to Consumer from Producer

pub fn try_read(&self) -> Option<&T>

Returns &T is location is owned by Consumer otherwise None NOTE: does not check for multiple calls

pub fn read_done(&self) -> Result<(), ErrCode>

Release location back to Producer

Trait Implementations

impl<T> Sync for SharedSingleton<T>