⚠️ VeridianOS Kernel Documentation - This is low-level kernel code. All functions are unsafe unless explicitly marked otherwise. no_std

LockFreeQueue

Struct LockFreeQueue 

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pub struct LockFreeQueue<T> { /* private fields */ }
Expand description

A lock-free multi-producer, single-consumer queue.

Multiple threads can call push() concurrently. Only one thread should call pop() at a time (the owning CPU’s scheduler).

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impl<T> LockFreeQueue<T>

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pub fn new() -> Self

Create a new empty lock-free queue.

Initializes with a sentinel (dummy) node so that head and tail always point to a valid node.

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pub fn push(&self, value: T)

Push a value onto the tail of the queue (multi-producer safe).

This operation is lock-free: it uses a CAS loop on the tail pointer. Multiple CPUs can call push() concurrently.

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pub fn pop(&self) -> Option<T>

Pop a value from the head of the queue (single-consumer only).

Returns None if the queue is empty.

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pub fn is_empty(&self) -> bool

Check if the queue is empty (approximate).

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pub fn len(&self) -> usize

Get the approximate number of elements in the queue.

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impl<T> Default for LockFreeQueue<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T> Drop for LockFreeQueue<T>

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<T: Send> Send for LockFreeQueue<T>

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impl<T: Send> Sync for LockFreeQueue<T>

Auto Trait Implementations§

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impl<T> !Freeze for LockFreeQueue<T>

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impl<T> RefUnwindSafe for LockFreeQueue<T>

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impl<T> Unpin for LockFreeQueue<T>

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impl<T> UnwindSafe for LockFreeQueue<T>
where T: RefUnwindSafe,

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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, 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, 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.