Trait SyncCell 

pub trait SyncCell<T> {
    // Required methods
    fn from_value(value: T) -> Self;
    fn get_mut(&mut self) -> &mut T;
    fn try_with<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>;
    fn try_store(&self, value: T) -> Result<(), T>;

    // Provided method
    fn swap(&self, value: T) { ... }
}

A thread-safe cell that can be used as atomic for any type.

It is already implemented for NaiveRWLock, std::sync::Mutex, std::sync::RwLock.

Required Methods

fn from_value(value: T) -> Self

Creates a new SyncCell with the given value.

fn get_mut(&mut self) -> &mut T

Returns a mutable reference to the inner value.

fn try_with<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>

Tries to load the value and call the provided function with it. Returns None if the SyncCell is locked.

For LockFreeSyncCell, this method always returns Some.

fn try_store(&self, value: T) -> Result<(), T>

Tries to store the value. It returns Ok(()) or Err(value) if the SyncCell is locked.

For LockFreeSyncCell, this method always returns Ok.

Provided Methods

fn swap(&self, value: T)

Tries to store the value using busy-waiting with Backoff.

For LockFreeSyncCell, this method never blocks.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T> SyncCell<T> for Mutex<T>

fn from_value(value: T) -> Self

fn get_mut(&mut self) -> &mut T

fn try_with<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>

fn try_store(&self, value: T) -> Result<(), T>

impl<T> SyncCell<T> for RwLock<T>

fn from_value(value: T) -> Self

fn get_mut(&mut self) -> &mut T

fn try_with<U>(&self, f: impl FnOnce(&T) -> U) -> Option<U>

fn try_store(&self, value: T) -> Result<(), T>

Implementors

impl<T> SyncCell<T> for NaiveRWLock<T>