kernel::sync::lock

Struct Lock

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pub struct Lock<T: ?Sized, B: Backend> { /* private fields */ }
Expand description

A mutual exclusion primitive.

Exposes one of the kernel locking primitives. Which one is exposed depends on the lock Backend specified as the generic parameter B.

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impl<T, B: Backend> Lock<T, B>

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pub fn new( t: T, name: &'static CStr, key: &'static LockClassKey, ) -> impl PinInit<Self>

Constructs a new lock initialiser.

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impl<T: ?Sized, B: Backend> Lock<T, B>

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

Acquires the lock and gives the caller access to the data protected by it.

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pub fn try_lock(&self) -> Option<Guard<'_, T, B>>

Tries to acquire the lock.

Returns a guard that can be used to access the data protected by the lock if successful.

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impl<T: ?Sized + Send, B: Backend> Send for Lock<T, B>

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impl<T: ?Sized + Send, B: Backend> Sync for Lock<T, B>

Auto Trait Implementations§

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impl<T, B> !Freeze for Lock<T, B>

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impl<T, B> !RefUnwindSafe for Lock<T, B>

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impl<T, B> UnwindSafe for Lock<T, B>
where T: UnwindSafe + ?Sized, <B as Backend>::State: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, E> Init<T, E> for T

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unsafe fn __init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more
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fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, E> PinInit<T, E> for T

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unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more
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fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.