Trait LockValue 

pub trait LockValue<T> {
    // Required method
    fn with_value<F, R>(&self, f: F) -> Option<R>
       where F: FnOnce(&T) -> R;
}

Helper trait for lock-aware value extraction.

This trait enables querying locked data without cloning.

Required Methods

fn with_value<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&T) -> R,

Execute a function with access to the inner value.

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> LockValue<T> for Arc<Mutex<T>>

fn with_value<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&T) -> R,

impl<T> LockValue<T> for Arc<RwLock<T>>

fn with_value<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&T) -> R,

impl<T> LockValue<T> for Mutex<T>

fn with_value<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&T) -> R,

impl<T> LockValue<T> for RwLock<T>

fn with_value<F, R>(&self, f: F) -> Option<R>

where F: FnOnce(&T) -> R,

Implementors