MappedRwLockWriteGuard in std::sync - Rust (original) (raw)
Struct MappedRwLockWriteGuard
pub struct MappedRwLockWriteGuard<'a, T: ?Sized + 'a> { /* private fields */ }🔬This is a nightly-only experimental API. (mapped_lock_guards #117108)
Expand description
RAII structure used to release the exclusive write access of a lock when dropped, which can point to a subfield of the protected data.
This structure is created by the map and try_map methods on RwLockWriteGuard.
🔬This is a nightly-only experimental API. (mapped_lock_guards #117108)
Makes a MappedRwLockWriteGuard for a component of the borrowed data, e.g. an enum variant.
The RwLock is already locked for writing, so this cannot fail.
This is an associated function that needs to be used asMappedRwLockWriteGuard::map(...). A method would interfere with methods of the same name on the contents of the MappedRwLockWriteGuardused through Deref.
§Panics
If the closure panics, the guard will be dropped (unlocked) and the RwLock will be poisoned.
🔬This is a nightly-only experimental API. (mapped_lock_guards #117108)
Makes a MappedRwLockWriteGuard for a component of the borrowed data. The original guard is returned as an Err(...) if the closure returnsNone.
The RwLock is already locked for writing, so this cannot fail.
This is an associated function that needs to be used asMappedRwLockWriteGuard::try_map(...). A method would interfere with methods of the same name on the contents of the MappedRwLockWriteGuardused through Deref.
§Panics
If the closure panics, the guard will be dropped (unlocked) and the RwLock will be poisoned.