[−][src]Trait futures::task::LocalSpawnExt
Extension trait for LocalSpawn
.
Provided methods
fn spawn_local<Fut>(&mut self, future: Fut) -> Result<(), SpawnError> where
Fut: Future<Output = ()> + 'static,
Fut: Future<Output = ()> + 'static,
Spawns a task that polls the given future with output ()
to
completion.
This method returns a Result
that contains a SpawnError
if
spawning fails.
You can use spawn_with_handle
if
you want to spawn a future with output other than ()
or if you want
to be able to await its completion.
Note this method will eventually be replaced with the upcoming
Spawn::spawn
method which will take a dyn Future
as input.
Technical limitations prevent Spawn::spawn
from being implemented
today. Feel free to use this method in the meantime.
#![feature(async_await, await_macro, futures_api)] use futures::executor::LocalPool; use futures::task::LocalSpawnExt; let executor = LocalPool::new(); let mut spawner = executor.spawner(); let future = async { /* ... */ }; spawner.spawn_local(future).unwrap();
fn spawn_local_with_handle<Fut>(
&mut self,
future: Fut
) -> Result<RemoteHandle<<Fut as Future>::Output>, SpawnError> where
Fut: Future + 'static,
&mut self,
future: Fut
) -> Result<RemoteHandle<<Fut as Future>::Output>, SpawnError> where
Fut: Future + 'static,
Spawns a task that polls the given future to completion and returns a future that resolves to the spawned future's output.
This method returns a Result
that contains a [RemoteHandle
], or, if
spawning fails, a SpawnError
. [RemoteHandle
] is a future that
resolves to the output of the spawned future.
#![feature(async_await, await_macro, futures_api)] use futures::executor::LocalPool; use futures::future; use futures::task::LocalSpawnExt; let mut executor = LocalPool::new(); let mut spawner = executor.spawner(); let future = future::ready(1); let join_handle_fut = spawner.spawn_local_with_handle(future).unwrap(); assert_eq!(executor.run_until(join_handle_fut), 1);
Implementors
impl<Sp> LocalSpawnExt for Sp where
Sp: LocalSpawn + ?Sized,
[src]
impl<Sp> LocalSpawnExt for Sp where
Sp: LocalSpawn + ?Sized,
fn spawn_local<Fut>(&mut self, future: Fut) -> Result<(), SpawnError> where | [src] |
fn spawn_local_with_handle<Fut>( | [src] |