Struct Guard

pub struct Guard<'a, T: ForeignOwnable> { /* private fields */ }

A lock guard.

The lock is unlocked when the guard goes out of scope.

Implementations

impl<'a, T: ForeignOwnable> Guard<'a, T>

pub fn get(&self, index: usize) -> Option<T::Borrowed<'_>>

Provides a reference to the element at the given index.

pub fn get_mut(&mut self, index: usize) -> Option<T::BorrowedMut<'_>>

Provides a mutable reference to the element at the given index.

pub fn remove(&mut self, index: usize) -> Option<T>

Removes and returns the element at the given index.

pub fn store( &mut self, index: usize, value: T, gfp: Flags, ) -> Result<Option<T>, StoreError<T>>

Stores an element at the given index.

May drop the lock if needed to allocate memory, and then reacquire it afterwards.

On success, returns the element which was previously at the given index.

On failure, returns the element which was attempted to be stored.

Trait Implementations

impl<T: ForeignOwnable> Drop for Guard<'_, T>

fn drop(&mut self)

Executes the destructor for this type.