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KeyedQueues

Struct KeyedQueues 

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pub struct KeyedQueues<K, V> { /* private fields */ }
Expand description

HashMap<K, Arc<ConcurrentQueue<V>>> behind a single RwLock.

  • Writers only contend when creating a new key.
  • push is almost always non-blocking (unbounded queue).

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impl<K, V> KeyedQueues<K, V>
where K: Eq + Hash + Clone, V: Send + 'static,

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pub const fn new() -> Self

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pub fn get_or_create(&self, key: &K) -> Arc<ConcurrentQueue<V>>

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pub fn try_send(&self, key: &K, val: V) -> Result<(), PushError<V>>

Potentially-blocking send but almost never blocking (unbounded queue => push never fails). ( Only blocks when the K has never been used before )

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pub fn inner(&self) -> &RwLock<HashMap<K, Arc<ConcurrentQueue<V>>>>

Trait Implementations§

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impl<K: Default, V: Default> Default for KeyedQueues<K, V>

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fn default() -> KeyedQueues<K, V>

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<K, V> !Freeze for KeyedQueues<K, V>

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impl<K, V> !RefUnwindSafe for KeyedQueues<K, V>

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impl<K, V> Send for KeyedQueues<K, V>
where K: Send, V: Send,

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impl<K, V> Sync for KeyedQueues<K, V>
where K: Send + Sync, V: Send,

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impl<K, V> Unpin for KeyedQueues<K, V>
where K: Unpin,

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impl<K, V> UnsafeUnpin for KeyedQueues<K, V>

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impl<K, V> UnwindSafe for KeyedQueues<K, V>
where K: 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, 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.