Enum rustc_data_structures::sharded::Sharded

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pub enum Sharded<T> {
    Single(Lock<T>),
    Shards(Box<[CacheAligned<Lock<T>>; 32]>),
}
Expand description

An array of cache-line aligned inner locked structures with convenience methods. A single field is used when the compiler uses only one thread.

Variants§

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Single(Lock<T>)

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Shards(Box<[CacheAligned<Lock<T>>; 32]>)

Implementations§

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impl<T> Sharded<T>

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pub fn new(value: impl FnMut() -> T) -> Self

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pub fn get_shard_by_value<K: Hash + ?Sized>(&self, _val: &K) -> &Lock<T>

The shard is selected by hashing val with FxHasher.

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pub fn get_shard_by_hash(&self, hash: u64) -> &Lock<T>

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pub fn get_shard_by_index(&self, _i: usize) -> &Lock<T>

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pub fn lock_shard_by_value<K: Hash + ?Sized>( &self, _val: &K ) -> LockGuard<'_, T>

The shard is selected by hashing val with FxHasher.

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pub fn lock_shard_by_hash(&self, hash: u64) -> LockGuard<'_, T>

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pub fn lock_shard_by_index(&self, _i: usize) -> LockGuard<'_, T>

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pub fn lock_shards(&self) -> impl Iterator<Item = LockGuard<'_, T>>

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pub fn try_lock_shards(&self) -> impl Iterator<Item = Option<LockGuard<'_, T>>>

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impl<K: Eq, V> Sharded<HashMap<K, V, BuildHasherDefault<FxHasher>>>

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pub fn len(&self) -> usize

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impl<K: Eq + Hash + Copy> Sharded<HashMap<K, (), BuildHasherDefault<FxHasher>>>

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pub fn intern_ref<Q>(&self, value: &Q, make: impl FnOnce() -> K) -> K
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

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pub fn intern<Q>(&self, value: Q, make: impl FnOnce(Q) -> K) -> K
where K: Borrow<Q>, Q: Hash + Eq,

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impl<K: Eq + Hash + Copy + IntoPointer> Sharded<HashMap<K, (), BuildHasherDefault<FxHasher>>>

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pub fn contains_pointer_to<T: Hash + IntoPointer>(&self, value: &T) -> bool

Trait Implementations§

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impl<T: Default> Default for Sharded<T>

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fn default() -> Self

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

Auto Trait Implementations§

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impl<T> DynSend for Sharded<T>
where T: DynSend,

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impl<T> DynSync for Sharded<T>
where T: DynSend,

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impl<T> !Freeze for Sharded<T>

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impl<T> !RefUnwindSafe for Sharded<T>

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impl<T> Send for Sharded<T>
where T: Send,

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impl<T> !Sync for Sharded<T>

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impl<T> Unpin for Sharded<T>
where T: Unpin,

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impl<T> UnwindSafe for Sharded<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = const ALIGN: Alignment = Alignment::of::<Self>();

Alignment of Self.
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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.