Struct OwnedRwLockMappedWriteGuard 

pub struct OwnedRwLockMappedWriteGuard<T: ?Sized, U: ?Sized = T> { /* private fields */ }

Exclusive access to a component U of the value of a RwLock<T> held through an Arc, made by OwnedRwLockWriteGuard::map; releases on drop. The release makes the progress RwLockReadGuard’s does.

Implementations

impl<T: ?Sized, U: ?Sized> OwnedRwLockMappedWriteGuard<T, U>

pub fn map<V, F>(this: Self, f: F) -> OwnedRwLockMappedWriteGuard<T, V>

where V: ?Sized, F: FnOnce(&mut U) -> &mut V,

A guard for a component of the component. It cannot fail: this guard already holds the write.

An associated function, OwnedRwLockMappedWriteGuard::map(guard, f): a method would shadow methods of the locked data.

pub fn try_map<V, F>( this: Self, f: F, ) -> Result<OwnedRwLockMappedWriteGuard<T, V>, Self>

where V: ?Sized, F: FnOnce(&mut U) -> Option<&mut V>,

map that gives the guard back when f finds no component, with the write still held.

pub fn rwlock(this: &Self) -> &Arc<RwLock<T>>

The Arc of the lock this guard holds the write of.

Trait Implementations

impl<T: ?Sized, U: ?Sized + Debug> Debug for OwnedRwLockMappedWriteGuard<T, U>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized, U: ?Sized> Deref for OwnedRwLockMappedWriteGuard<T, U>

type Target = U

The resulting type after dereferencing.

fn deref(&self) -> &U

Dereferences the value.

impl<T: ?Sized, U: ?Sized> DerefMut for OwnedRwLockMappedWriteGuard<T, U>

fn deref_mut(&mut self) -> &mut U

Mutably dereferences the value.

impl<T: ?Sized, U: ?Sized + Display> Display for OwnedRwLockMappedWriteGuard<T, U>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized, U: ?Sized> Drop for OwnedRwLockMappedWriteGuard<T, U>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl<T: ?Sized + Send + Sync, U: ?Sized + Send + Sync> Send for OwnedRwLockMappedWriteGuard<T, U>

impl<T: ?Sized + Send + Sync, U: ?Sized + Send + Sync> Sync for OwnedRwLockMappedWriteGuard<T, U>