Struct SpinRwLock 

pub struct SpinRwLock<T>
where
    T: ?Sized,
{ /* private fields */ }

A preemptible RT reader/writer lock with a single-writer PI gate.

Readers already holding the lock cannot receive a writer’s donation. Each successful guard pins migration but leaves hardware IRQs enabled.

Implementations

impl<T> SpinRwLock<T>

pub const fn new(value: T) -> SpinRwLock<T>

Creates an unlocked RT read/write lock.

pub fn into_inner(self) -> T

Returns the protected value through exclusive object ownership.

impl<T> SpinRwLock<T>

where T: ?Sized,

pub fn read(&self) -> SpinRwLockReadGuard<'_, T>

Acquires shared access in preemptible task context.

pub fn write(&self) -> SpinRwLockWriteGuard<'_, T>

Acquires exclusive access, waiting for existing readers to finish.

pub fn try_read(&self) -> Option<SpinRwLockReadGuard<'_, T>>

Attempts shared access without sleeping.

pub fn try_write(&self) -> Option<SpinRwLockWriteGuard<'_, T>>

Attempts exclusive access without sleeping.

pub fn read_irqsave(&self) -> SpinRwLockReadGuard<'_, T>

RT IRQ-save spelling; hardware IRQ state remains unchanged.

pub fn write_irqsave(&self) -> SpinRwLockWriteGuard<'_, T>

RT IRQ-save spelling; hardware IRQ state remains unchanged.

pub fn try_read_irqsave(&self) -> Option<SpinRwLockReadGuard<'_, T>>

RT IRQ-save spelling; hardware IRQ state remains unchanged.

pub fn try_write_irqsave(&self) -> Option<SpinRwLockWriteGuard<'_, T>>

RT IRQ-save spelling; hardware IRQ state remains unchanged.

pub fn get_mut(&mut self) -> &mut T

Returns exclusive access without locking.

Trait Implementations

impl<T> Debug for SpinRwLock<T>

where T: Debug + ?Sized,

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

Formats the value using the given formatter.

impl<T> Default for SpinRwLock<T>

where T: Default,

fn default() -> SpinRwLock<T>

Returns the “default value” for a type.