#[repr(transparent)]pub struct SpinLock<T: ?Sized, G = PreemptDisabled> {
phantom: PhantomData<G>,
inner: SpinLockInner<T>,
}Expand description
A spin lock.
§Guard behavior
The type `G’ specifies the guard behavior of the spin lock. While holding the lock,
- if
GisPreemptDisabled, preemption is disabled; - if
GisLocalIrqDisabled, local IRQs are disabled.
The G can also be provided by other crates other than ostd,
if it behaves similar like PreemptDisabled or LocalIrqDisabled.
The guard behavior can be temporarily upgraded from PreemptDisabled to
LocalIrqDisabled using the disable_irq method.
Fields§
§phantom: PhantomData<G>§inner: SpinLockInner<T>Only the last field of a struct may have a dynamically sized type. That’s why SpinLockInner is put in the last field.
Implementations§
Source§impl<T: ?Sized> SpinLock<T, PreemptDisabled>
impl<T: ?Sized> SpinLock<T, PreemptDisabled>
Sourcepub fn disable_irq(&self) -> &SpinLock<T, LocalIrqDisabled>
pub fn disable_irq(&self) -> &SpinLock<T, LocalIrqDisabled>
Converts the guard behavior from disabling preemption to disabling IRQs.
Source§impl<T: ?Sized, G: SpinGuardian> SpinLock<T, G>
impl<T: ?Sized, G: SpinGuardian> SpinLock<T, G>
Sourcepub fn lock(&self) -> SpinLockGuard<'_, T, G>
pub fn lock(&self) -> SpinLockGuard<'_, T, G>
Acquires the spin lock.
Sourcepub fn lock_arc(self: &Arc<Self>) -> ArcSpinLockGuard<T, G>
pub fn lock_arc(self: &Arc<Self>) -> ArcSpinLockGuard<T, G>
Sourcepub fn try_lock(&self) -> Option<SpinLockGuard<'_, T, G>>
pub fn try_lock(&self) -> Option<SpinLockGuard<'_, T, G>>
Tries acquiring the spin lock immedidately.
Sourcepub fn get_mut(&mut self) -> &mut T
pub fn get_mut(&mut self) -> &mut T
Returns a mutable reference to the underlying data.
This method is zero-cost: By holding a mutable reference to the lock, the compiler has already statically guaranteed that access to the data is exclusive.
Sourcefn acquire_lock(&self)
fn acquire_lock(&self)
Acquires the spin lock, otherwise busy waiting
fn try_acquire_lock(&self) -> bool
fn release_lock(&self)
Trait Implementations§
impl<T: ?Sized + Send, G> Send for SpinLock<T, G>
impl<T: ?Sized + Send, G> Sync for SpinLock<T, G>
Auto Trait Implementations§
impl<T, G = PreemptDisabled> !Freeze for SpinLock<T, G>
impl<T, G = PreemptDisabled> !RefUnwindSafe for SpinLock<T, G>
impl<T, G> Unpin for SpinLock<T, G>
impl<T, G> UnwindSafe for SpinLock<T, G>
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