Struct SpinMutex 

pub struct SpinMutex<T: ?Sized> { /* private fields */ }

IRQ-locking mutex for very short critical sections.

Acquiring the lock disables interrupts globally for the lifetime of the SpinMutexGuard; releasing it restores the previous interrupt state. Do not hold across blocking calls or .await points — the system will deadlock if a higher-priority interrupt is needed to make progress.

Maps to ove_irq_lock / ove_irq_unlock on the C side, which is itself a thin wrapper over the host RTOS’s interrupt-disable primitive (taskENTER_CRITICAL on FreeRTOS, irq_lock() on Zephyr, enter_critical_section() on NuttX, pthread_sigmask on POSIX).

Implementations

impl<T> SpinMutex<T>

pub const fn new(value: T) -> Self

Wrap value in a new SpinMutex.

pub fn into_inner(self) -> T

Consume the mutex and return the wrapped value.

impl<T: ?Sized> SpinMutex<T>

pub fn lock(&self) -> SpinMutexGuard<'_, T>

Acquire the lock by disabling interrupts. The returned guard restores them when dropped.

pub fn with<R>(&self, f: impl FnOnce(&mut T) -> R) -> R

Run f with the value, restoring the IRQ state afterwards. Sugar around SpinMutex::lock that scopes the lock to the closure body.

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

Get a mutable reference without taking the lock. Sound because &mut self proves there are no other handles.

Trait Implementations

impl<T: ?Sized + Send> Send for SpinMutex<T>

impl<T: ?Sized + Send> Sync for SpinMutex<T>