pub struct TaskGroup {
inner: Arc<TaskGroupInner>,
}
Expand description
A group of task working together
Using this struct it is possible to spawn one or more main thread collaborating, which can cooperatively gracefully shut down, either due to external request, or failure of one of them.
Each thread should periodically check TaskHandle
or rely
on condition like channel disconnection to detect when it is time
to finish.
Fields§
§inner: Arc<TaskGroupInner>
Implementations§
source§impl TaskGroup
impl TaskGroup
pub fn new() -> Self
pub fn make_handle(&self) -> TaskHandle
sourcepub fn make_subgroup(&self) -> Self
pub fn make_subgroup(&self) -> Self
Create a sub-group
Task subgroup works like an independent TaskGroup
, but the parent
TaskGroup
will propagate the shut down signal to a sub-group.
In contrast to using the parent group directly, a subgroup allows
calling Self::join_all
and detecting any panics on just a
subset of tasks.
The code create a subgroup is responsible for calling
Self::join_all
. If it won’t, the parent subgroup will not
detect any panics in the tasks spawned by the subgroup.
sourcepub fn shutdown(&self)
pub fn shutdown(&self)
Tell all tasks in the group to shut down. This only initiates the shutdown process, it does not wait for the tasks to shut down.
sourcepub async fn shutdown_join_all(
self,
join_timeout: impl Into<Option<Duration>>,
) -> Result<(), Error>
pub async fn shutdown_join_all( self, join_timeout: impl Into<Option<Duration>>, ) -> Result<(), Error>
Tell all tasks in the group to shut down and wait for them to finish.
sourcepub fn install_kill_handler(&self)
pub fn install_kill_handler(&self)
Add a task to the group that waits for CTRL+C or SIGTERM, then tells the rest of the task group to shut down.
pub fn spawn<Fut, R>( &self, name: impl Into<String>, f: impl FnOnce(TaskHandle) -> Fut + MaybeSend + 'static, ) -> Receiver<R>
sourcepub fn spawn_cancellable<R>(
&self,
name: impl Into<String>,
future: impl Future<Output = R> + MaybeSend + 'static,
) -> Receiver<Result<R, ShuttingDownError>>where
R: MaybeSend + 'static,
pub fn spawn_cancellable<R>(
&self,
name: impl Into<String>,
future: impl Future<Output = R> + MaybeSend + 'static,
) -> Receiver<Result<R, ShuttingDownError>>where
R: MaybeSend + 'static,
Spawn a task that will get cancelled automatically on TaskGroup
shutdown.
pub async fn join_all(self, timeout: Option<Duration>) -> Result<(), Error>
pub fn join_all_inner<'life0, 'async_recursion>(
self,
deadline: Option<SystemTime>,
errors: &'life0 mut Vec<JoinError>,
) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_recursion>>where
'life0: 'async_recursion,
Trait Implementations§
Auto Trait Implementations§
impl Freeze for TaskGroup
impl !RefUnwindSafe for TaskGroup
impl Send for TaskGroup
impl Sync for TaskGroup
impl Unpin for TaskGroup
impl !UnwindSafe for TaskGroup
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