Struct sp_utils::mpsc::TracingUnboundedReceiver[−][src]

pub struct TracingUnboundedReceiver<T>(_, _);

Expand description

Wrapper Type around UnboundedReceiver that decreases the global measure when a message is polled

Implementations

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impl<T> TracingUnboundedReceiver<T>

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pub fn close(&mut self)

Proxy function to mpsc::UnboundedReceiver that consumes all messages first and updates the counter

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pub fn try_next(&mut self) -> Result<Option<T>, TryRecvError>

Proxy function to mpsc::UnboundedReceiver that discounts the messages taken out

Trait Implementations

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impl<T: Debug> Debug for TracingUnboundedReceiver<T>

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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<T> Drop for TracingUnboundedReceiver<T>

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fn drop(&mut self)

Executes the destructor for this type. Read more

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impl<T> FusedStream for TracingUnboundedReceiver<T>

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fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.

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impl<T> Stream for TracingUnboundedReceiver<T>

type Item = T

Values yielded by the stream.

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fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<T>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted. Read more

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream. Read more

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impl<T> Unpin for TracingUnboundedReceiver<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for TracingUnboundedReceiver<T>

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

impl<T> Sync for TracingUnboundedReceiver<T> where
    T: Send,

impl<T> !UnwindSafe for TracingUnboundedReceiver<T>

Blanket Implementations

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

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pub 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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pub 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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pub 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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pub fn from(t: T) -> T

Performs the conversion.

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impl<T, U> Into<U> for T where
    U: From<T>,

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pub fn into(self) -> U

Performs the conversion.

impl<T> StreamExt for T where
    T: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self> where
    Self: Unpin,

Creates a future that resolves to the next item in the stream. Read more

fn into_future(self) -> StreamFuture<Self> where
    Self: Unpin,

Converts this stream into a future of (next_item, tail_of_stream). If the stream terminates, then the next item is None. Read more

fn map<T, F>(self, f: F) -> Map<Self, F> where
    F: FnMut(Self::Item) -> T,

Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more

fn enumerate(self) -> Enumerate<Self>

Creates a stream which gives the current iteration count as well as the next value. Read more

fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(&Self::Item) -> Fut,

Filters the values produced by this stream according to the provided asynchronous predicate. Read more

fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F> where
    Fut: Future<Output = Option<T>>,
    F: FnMut(Self::Item) -> Fut,

Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
    Fut: Future,
    F: FnMut(Self::Item) -> Fut,

Computes from this stream’s items new items of a different type using an asynchronous closure. Read more

fn collect<C>(self) -> Collect<Self, C> where
    C: Default + Extend<Self::Item>,

Transforms a stream into a collection, returning a future representing the result of that computation. Read more

fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB> where
    Self: Stream<Item = (A, B)>,
    FromA: Default + Extend<A>,
    FromB: Default + Extend<B>,

Converts a stream of pairs into a future, which resolves to pair of containers. Read more

fn concat(self) -> Concat<Self> where
    Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
    Self::Item: IntoIterator,
    Self::Item: Default,

Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more

fn cycle(self) -> Cycle<Self> where
    Self: Clone,

Repeats a stream endlessly. Read more

fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F> where
    Fut: Future<Output = T>,
    F: FnMut(T, Self::Item) -> Fut,

Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(Self::Item) -> Fut,

Execute predicate over asynchronous stream, and return true if any element in stream satisfied a predicate. Read more

fn all<Fut, F>(self, f: F) -> All<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(Self::Item) -> Fut,

Execute predicate over asynchronous stream, and return true if all element in stream satisfied a predicate. Read more

fn flatten(self) -> Flatten<Self> where
    Self::Item: Stream,

Flattens a stream of streams into just one continuous stream. Read more

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
    F: FnMut(Self::Item) -> U,
    U: Stream,

Maps a stream like [StreamExt::map] but flattens nested Streams. Read more

fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F> where
    Fut: Future<Output = Option<B>>,
    F: FnMut(&mut S, Self::Item) -> Fut,

Combinator similar to [StreamExt::fold] that holds internal state and produces a new stream. Read more

fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(&Self::Item) -> Fut,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(&Self::Item) -> Fut,

Take elements from this stream while the provided asynchronous predicate resolves to true. Read more

fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut> where
    Fut: Future,

Take elements from this stream until the provided future resolves. Read more

fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F> where
    Fut: Future<Output = ()>,
    F: FnMut(Self::Item) -> Fut,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn for_each_concurrent<Fut, F>(
    self, 
    limit: impl Into<Option<usize>>, 
    f: F
) -> ForEachConcurrent<Self, Fut, F> where
    Fut: Future<Output = ()>,
    F: FnMut(Self::Item) -> Fut,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more

fn take(self, n: usize) -> Take<Self>

Creates a new stream of at most n items of the underlying stream. Read more

fn skip(self, n: usize) -> Skip<Self>

Creates a new stream which skips n items of the underlying stream. Read more

fn fuse(self) -> Fuse<Self>

Fuse a stream such that poll_next will never again be called once it has finished. This method can be used to turn any Stream into a FusedStream. Read more

fn by_ref(&mut self) -> &mut Self

Borrows a stream, rather than consuming it. Read more

fn catch_unwind(self) -> CatchUnwind<Self> where
    Self: UnwindSafe,

Catches unwinding panics while polling the stream. Read more

fn boxed<'a>(
    self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>> where
    Self: Send + 'a,

Wrap the stream in a Box, pinning it. Read more

fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>> where
    Self: 'a,

Wrap the stream in a Box, pinning it. Read more

fn buffered(self, n: usize) -> Buffered<Self> where
    Self::Item: Future,

An adaptor for creating a buffered list of pending futures. Read more

fn buffer_unordered(self, n: usize) -> BufferUnordered<Self> where
    Self::Item: Future,

An adaptor for creating a buffered list of pending futures (unordered). Read more

fn zip<St>(self, other: St) -> Zip<Self, St> where
    St: Stream,

An adapter for zipping two streams together. Read more

fn chain<St>(self, other: St) -> Chain<Self, St> where
    St: Stream<Item = Self::Item>,

Adapter for chaining two streams. Read more

fn peekable(self) -> Peekable<Self>

Creates a new stream which exposes a peek method. Read more

fn chunks(self, capacity: usize) -> Chunks<Self>

An adaptor for chunking up items of the stream inside a vector. Read more

fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>

An adaptor for chunking up ready items of the stream inside a vector. Read more

fn forward<S>(self, sink: S) -> Forward<Self, S> where
    Self: TryStream,
    S: Sink<Self::Ok, Error = Self::Error>,

A future that completes after the given stream has been fully processed into the sink and the sink has been flushed and closed. Read more

fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>) where
    Self: Sink<Item>,

Splits this Stream + Sink object into separate Sink and Stream objects. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnMut(&Self::Item),

Do something with each item of this stream, afterwards passing it on. Read more

fn left_stream<B>(self) -> Either<Self, B> where
    B: Stream<Item = Self::Item>,

Wrap this stream in an Either stream, making it the left-hand variant of that Either. Read more

fn right_stream<B>(self) -> Either<B, Self> where
    B: Stream<Item = Self::Item>,

Wrap this stream in an Either stream, making it the right-hand variant of that Either. Read more

fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> where
    Self: Unpin,

A convenience method for calling [Stream::poll_next] on Unpin stream types. Read more

fn select_next_some(&mut self) -> SelectNextSome<'_, Self> where
    Self: Unpin + FusedStream,

Returns a Future that resolves when the next item in this stream is ready. Read more

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impl<T, U> TryFrom<U> for T where
    U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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pub 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>,

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

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<S, T, E> TryStream for S where
    S: Stream<Item = Result<T, E>> + ?Sized,

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

pub fn try_poll_next(
    self: Pin<&mut S>, 
    cx: &mut Context<'_>
) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>

Poll this TryStream as if it were a Stream. Read more

impl<S> TryStreamExt for S where
    S: TryStream + ?Sized,

fn err_into<E>(self) -> ErrInto<Self, E> where
    Self::Error: Into<E>,

Wraps the current stream in a new stream which converts the error type into the one provided. Read more

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
    F: FnMut(Self::Ok) -> T,

Wraps the current stream in a new stream which maps the success value using the provided closure. Read more

fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
    F: FnMut(Self::Error) -> E,

Wraps the current stream in a new stream which maps the error value using the provided closure. Read more

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
    Fut: TryFuture<Error = Self::Error>,
    F: FnMut(Self::Ok) -> Fut,

Chain on a computation for when a value is ready, passing the successful results to the provided closure f. Read more

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
    Fut: TryFuture<Ok = Self::Ok>,
    F: FnMut(Self::Error) -> Fut,

Chain on a computation for when an error happens, passing the erroneous result to the provided closure f. Read more

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
    F: FnMut(&Self::Ok),

Do something with the success value of this stream, afterwards passing it on. Read more

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
    F: FnMut(&Self::Error),

Do something with the error value of this stream, afterwards passing it on. Read more

fn into_stream(self) -> IntoStream<Self>

Wraps a [TryStream] into a type that implements Stream Read more

fn try_next(&mut self) -> TryNext<'_, Self> where
    Self: Unpin,

Creates a future that attempts to resolve the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more

fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F> where
    Fut: TryFuture<Ok = (), Error = Self::Error>,
    F: FnMut(Self::Ok) -> Fut,

Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F> where
    Fut: TryFuture<Ok = bool, Error = Self::Error>,
    F: FnMut(&Self::Ok) -> Fut,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F> where
    Fut: TryFuture<Ok = bool, Error = Self::Error>,
    F: FnMut(&Self::Ok) -> Fut,

Take elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_for_each_concurrent<Fut, F>(
    self, 
    limit: impl Into<Option<usize>>, 
    f: F
) -> TryForEachConcurrent<Self, Fut, F> where
    Fut: Future<Output = Result<(), Self::Error>>,
    F: FnMut(Self::Ok) -> Fut,

Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available, exiting as soon as an error occurs. Read more

fn try_collect<C>(self) -> TryCollect<Self, C> where
    C: Default + Extend<Self::Ok>,

Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more

fn try_chunks(self, capacity: usize) -> TryChunks<Self>

An adaptor for chunking up successful items of the stream inside a vector. Read more

fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F> where
    Fut: Future<Output = bool>,
    F: FnMut(&Self::Ok) -> Fut,

Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more

fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F> where
    Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
    F: FnMut(Self::Ok) -> Fut,

Attempt to filter the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more

fn try_flatten(self) -> TryFlatten<Self> where
    Self::Ok: TryStream,
    <Self::Ok as TryStream>::Error: From<Self::Error>,

Flattens a stream of streams into just one continuous stream. Read more

fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F> where
    Fut: TryFuture<Ok = T, Error = Self::Error>,
    F: FnMut(T, Self::Ok) -> Fut,

Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn try_concat(self) -> TryConcat<Self> where
    Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
    Self::Ok: IntoIterator,
    Self::Ok: Default,

Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more

fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self> where
    Self::Ok: TryFuture,
    <Self::Ok as TryFuture>::Error == Self::Error,

Attempt to execute several futures from a stream concurrently (unordered). Read more

fn try_buffered(self, n: usize) -> TryBuffered<Self> where
    Self::Ok: TryFuture,
    <Self::Ok as TryFuture>::Error == Self::Error,

Attempt to execute several futures from a stream concurrently. Read more

fn try_poll_next_unpin(
    &mut self, 
    cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
    Self: Unpin,

A convenience method for calling [TryStream::try_poll_next] on Unpin stream types. Read more

fn compat(self) -> Compat<Self> where
    Self: Unpin,

Wraps a [TryStream] into a stream compatible with libraries using futures 0.1 Stream. Requires the compat feature to be enabled. Read more

fn into_async_read(self) -> IntoAsyncRead<Self> where
    Self: TryStreamExt<Error = Error> + Unpin,
    Self::Ok: AsRef<[u8]>,

Adapter that converts this stream into an AsyncRead. Read more