Struct rustc_data_structures::sync::freeze::FreezeLock
source · pub struct FreezeLock<T> {
data: UnsafeCell<T>,
frozen: AtomicBool,
lock: RwLock<()>,
}
Expand description
A type which allows mutation using a lock until the value is frozen and can be accessed lock-free.
Unlike RwLock
, it can be used to prevent mutation past a point.
Fields§
§data: UnsafeCell<T>
§frozen: AtomicBool
§lock: RwLock<()>
This lock protects writes to the data
and frozen
fields.
Implementations§
source§impl<T> FreezeLock<T>
impl<T> FreezeLock<T>
pub fn new(value: T) -> Self
pub fn frozen(value: T) -> Self
pub fn with(value: T, frozen: bool) -> Self
pub fn is_frozen(&self) -> bool
pub fn read(&self) -> FreezeReadGuard<'_, T>
pub fn borrow(&self) -> FreezeReadGuard<'_, T>
pub fn write(&self) -> FreezeWriteGuard<'_, T>
pub fn try_write(&self) -> Option<FreezeWriteGuard<'_, T>>
pub fn freeze(&self) -> &T
Trait Implementations§
source§impl<T: Default> Default for FreezeLock<T>
impl<T: Default> Default for FreezeLock<T>
source§fn default() -> FreezeLock<T>
fn default() -> FreezeLock<T>
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl<T> !RefUnwindSafe for FreezeLock<T>
impl<T> Send for FreezeLock<T>where T: Send,
impl<T> !Sync for FreezeLock<T>
impl<T> Unpin for FreezeLock<T>where T: Unpin,
impl<T> UnwindSafe for FreezeLock<T>where T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<'a, T> Captures<'a> for Twhere T: ?Sized,
Layout§
Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.