Struct futures_util::task::LocalFutureObj[−][src]

[+] Show declaration

pub struct LocalFutureObj<'a, T> { /* fields omitted */ }

[−]

A custom trait object for polling futures, roughly akin to Box<dyn Future<Output = T> + 'a>.

This custom trait object was introduced as currently it is not possible to take dyn Trait by value and Box<dyn Trait> is not available in no_std contexts.

Implementations

`impl<'a, T> LocalFutureObj<'a, T>`[src][−]

`pub fn new<F>(f: F) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T; where F: 'a + UnsafeFutureObj<'a, T>,` [src][−]

Create a LocalFutureObj from a custom trait object representation.

`pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>ⓘNotable traits for FutureObj<'_, T> impl<'_, T> Future for FutureObj<'_, T> type Output = T;`[src][−]

Converts the LocalFutureObj into a FutureObj.

Safety

To make this operation safe one has to ensure that the UnsafeFutureObj instance from which this LocalFutureObj was created actually implements Send.

Struct futures_util::task::LocalFutureObj⎘[−][src]

Implementations

impl<'a, T> LocalFutureObj<'a, T>[src][−]

pub fn new<F>(f: F) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T; where F: 'a + UnsafeFutureObj<'a, T>, [src][−]

Notable traits for LocalFutureObj<'_, T>

pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>ⓘNotable traits for FutureObj<'_, T>impl<'_, T> Future for FutureObj<'_, T> type Output = T;[src][−]

Notable traits for FutureObj<'_, T>

Safety

Trait Implementations

impl<'_, T> Debug for LocalFutureObj<'_, T>[src][+]

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[src][−]

impl<'_, T> Drop for LocalFutureObj<'_, T>[src][+]

pub fn drop(&mut self)[src][−]

impl<'a, F> From<Box<F, Global>> for LocalFutureObj<'a, ()> where F: 'a + Future<Output = ()>, [src][+]

pub fn from(boxed: Box<F, Global>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src][−]

Notable traits for LocalFutureObj<'_, T>

impl<'a> From<Box<dyn Future<Output = ()> + 'a, Global>> for LocalFutureObj<'a, ()>[src][+]

pub fn from( boxed: Box<dyn Future<Output = ()> + 'a, Global>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src][−]

Notable traits for LocalFutureObj<'_, T>

impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>[src][+]

pub fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src][−]

Notable traits for LocalFutureObj<'_, T>

impl<'a, F> From<Pin<Box<F, Global>>> for LocalFutureObj<'a, ()> where F: 'a + Future<Output = ()>, [src][+]

pub fn from(boxed: Pin<Box<F, Global>>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src][−]

Notable traits for LocalFutureObj<'_, T>

impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a, Global>>> for LocalFutureObj<'a, ()>[src][+]

pub fn from( boxed: Pin<Box<dyn Future<Output = ()> + 'a, Global>>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T>impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src][−]

Notable traits for LocalFutureObj<'_, T>

impl<'_, T> Future for LocalFutureObj<'_, T>[src][+]

type Output = T

pub fn poll( self: Pin<&mut LocalFutureObj<'_, T>>, cx: &mut Context<'_>) -> Poll<T>[src][−]

impl<'_, T> Unpin for LocalFutureObj<'_, T>[src]

Auto Trait Implementations

impl<'a, T> !RefUnwindSafe for LocalFutureObj<'a, T>

impl<'a, T> !Send for LocalFutureObj<'a, T>

impl<'a, T> !Sync for LocalFutureObj<'a, T>

impl<'a, T> !UnwindSafe for LocalFutureObj<'a, T>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src][−]

impl<T> Borrow<T> for T where T: ?Sized, [src][+]

pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src][−]

Notable traits for &'_ mut F

impl<T> BorrowMut<T> for T where T: ?Sized, [src][+]

pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src][−]

Notable traits for &'_ mut F

impl<T> From<T> for T[src][+]

pub fn from(t: T) -> T[src][−]

impl<T, U> Into<U> for T where U: From<T>, [src][+]

pub fn into(self) -> U[src][−]

impl<F> IntoFuture for F where F: Future, [src][+]

type Output = <F as Future>::Output

type Future = F

pub fn into_future(self) -> <F as IntoFuture>::Future[src][−]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src][+]

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src][−]

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized, [src][+]

type Ok = T

type Error = E

pub fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>) -> Poll<<F as Future>::Output>[src][−]

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src][+]

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

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

Struct futures_util::task::LocalFutureObj[−][src]

`impl<'a, T> LocalFutureObj<'a, T>`[src][−]

`pub fn new<F>(f: F) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T; where F: 'a + UnsafeFutureObj<'a, T>,` [src][−]

`pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>ⓘNotable traits for FutureObj<'_, T> impl<'_, T> Future for FutureObj<'_, T> type Output = T;`[src][−]

`impl<'_, T> Debug for LocalFutureObj<'_, T>`[src][+]

`pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>`[src][−]

`impl<'_, T> Drop for LocalFutureObj<'_, T>`[src][+]

`pub fn drop(&mut self)`[src][−]

`impl<'a, F> From<Box<F, Global>> for LocalFutureObj<'a, ()> where F: 'a + Future<Output = ()>,` [src][+]

`pub fn from(boxed: Box<F, Global>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;`[src][−]

`impl<'a> From<Box<dyn Future<Output = ()> + 'a, Global>> for LocalFutureObj<'a, ()>`[src][+]

`pub fn from( boxed: Box<dyn Future<Output = ()> + 'a, Global> ) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;`[src][−]

`impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>`[src][+]

`pub fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;`[src][−]

`impl<'a, F> From<Pin<Box<F, Global>>> for LocalFutureObj<'a, ()> where F: 'a + Future<Output = ()>,` [src][+]

`pub fn from(boxed: Pin<Box<F, Global>>) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;`[src][−]

`impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a, Global>>> for LocalFutureObj<'a, ()>`[src][+]

`pub fn from( boxed: Pin<Box<dyn Future<Output = ()> + 'a, Global>> ) -> LocalFutureObj<'a, ()>ⓘNotable traits for LocalFutureObj<'_, T> impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;`[src][−]

`impl<'_, T> Future for LocalFutureObj<'_, T>`[src][+]

`type Output = T`

`pub fn poll( self: Pin<&mut LocalFutureObj<'_, T>>, cx: &mut Context<'_> ) -> Poll<T>`[src][−]

`impl<'_, T> Unpin for LocalFutureObj<'_, T>`[src]

`impl<'a, T> !RefUnwindSafe for LocalFutureObj<'a, T>`

`impl<'a, T> !Send for LocalFutureObj<'a, T>`

`impl<'a, T> !Sync for LocalFutureObj<'a, T>`

`impl<'a, T> !UnwindSafe for LocalFutureObj<'a, T>`

`impl<T> Any for T where T: 'static + ?Sized,` [src][+]

`pub fn type_id(&self) -> TypeId`[src][−]

`impl<T> Borrow<T> for T where T: ?Sized,` [src][+]

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src][−]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src][+]

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src][−]

`impl<T> From<T> for T`[src][+]

`pub fn from(t: T) -> T`[src][−]

`impl<T, U> Into<U> for T where U: From<T>,` [src][+]

`pub fn into(self) -> U`[src][−]

`impl<F> IntoFuture for F where F: Future,` [src][+]

`type Output = <F as Future>::Output`

`type Future = F`

`pub fn into_future(self) -> <F as IntoFuture>::Future`[src][−]

`impl<T, U> TryFrom<U> for T where U: Into<T>,` [src][+]

`type Error = Infallible`

`pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src][−]

`impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,` [src][+]

`type Ok = T`

`type Error = E`

`pub fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_> ) -> Poll<<F as Future>::Output>`[src][−]

`impl<T, U> TryInto<U> for T where U: TryFrom<T>,` [src][+]

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

`pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src][−]