netstack3_base::socket

Enum MaybeDualStack

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pub enum MaybeDualStack<DS, NDS> {
    DualStack(DS),
    NotDualStack(NDS),
}
Expand description

Control flow type containing either a dual-stack or non-dual-stack context.

This type exists to provide nice names to the result of [BoundStateContext::dual_stack_context], and to allow generic code to match on when checking whether a socket protocol and IP version support dual-stack operation. If dual-stack operation is supported, a MaybeDualStack::DualStack value will be held, otherwise a NonDualStack value.

Note that the templated types to not have trait bounds; those are provided by the trait with the dual_stack_context function.

In monomorphized code, this type frequently has exactly one template parameter that is uninstantiable (it contains an instance of core::convert::Infallible or some other empty enum, or a reference to the same)! That lets the compiler optimize it out completely, creating no actual runtime overhead.

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DualStack(DS)

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NotDualStack(NDS)

Trait Implementations§

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impl<DS: Debug, NDS: Debug> Debug for MaybeDualStack<DS, NDS>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<I: DualStackIpExt, DS: GenericOverIp<I>, NDS: GenericOverIp<I>> GenericOverIp<I> for MaybeDualStack<DS, NDS>

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type Type = MaybeDualStack<<DS as GenericOverIp<I>>::Type, <NDS as GenericOverIp<I>>::Type>

The type of Self when its IP-generic parameter is replaced with the type NewIp.

Auto Trait Implementations§

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impl<DS, NDS> Freeze for MaybeDualStack<DS, NDS>
where DS: Freeze, NDS: Freeze,

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impl<DS, NDS> RefUnwindSafe for MaybeDualStack<DS, NDS>
where DS: RefUnwindSafe, NDS: RefUnwindSafe,

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impl<DS, NDS> Send for MaybeDualStack<DS, NDS>
where DS: Send, NDS: Send,

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impl<DS, NDS> Sync for MaybeDualStack<DS, NDS>
where DS: Sync, NDS: Sync,

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impl<DS, NDS> Unpin for MaybeDualStack<DS, NDS>
where DS: Unpin, NDS: Unpin,

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impl<DS, NDS> UnwindSafe for MaybeDualStack<DS, NDS>
where DS: UnwindSafe, NDS: UnwindSafe,

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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, D> Encode<Ambiguous1, D> for T
where D: ResourceDialect,

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unsafe fn encode( self, _encoder: &mut Encoder<'_, D>, _offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID. Read more
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impl<T, D> Encode<Ambiguous2, D> for T
where D: ResourceDialect,

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unsafe fn encode( self, _encoder: &mut Encoder<'_, D>, _offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID. 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> 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<CC, BC, Meta> RecvFrameContext<Meta, BC> for CC
where Meta: ReceivableFrameMeta<CC, BC>,

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fn receive_frame<B>(&mut self, bindings_ctx: &mut BC, metadata: Meta, frame: B)
where B: BufferMut + Debug,

Receive a frame. Read more
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impl<CC, BC, Meta> SendFrameContext<BC, Meta> for CC
where Meta: SendableFrameMeta<CC, BC>,

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fn send_frame<S>( &mut self, bindings_ctx: &mut BC, metadata: Meta, frame: S, ) -> Result<(), ErrorAndSerializer<SendFrameErrorReason, S>>
where S: Serializer, <S as Serializer>::Buffer: BufferMut,

Send a frame. Read more
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impl<Id, CC, BC> TimerHandler<BC, Id> for CC
where BC: TimerBindingsTypes, Id: HandleableTimer<CC, BC>,

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fn handle_timer( &mut self, bindings_ctx: &mut BC, dispatch: Id, timer: <BC as TimerBindingsTypes>::UniqueTimerId, )

Handle a timer firing. 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<L, T> UnlockedAccess<L> for T
where L: UnlockedAccessMarkerFor<T>,

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type Data = <L as UnlockedAccessMarkerFor<T>>::Data

The type of state being accessed.
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type Guard<'l> = &'l <L as UnlockedAccessMarkerFor<T>>::Data where T: 'l

A guard providing read access to the data.
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fn access(&self) -> <T as UnlockedAccess<L>>::Guard<'_>

How to access the state.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<B, A> LockBefore<B> for A
where B: LockAfter<A>,