Type Alias holochain::conductor::manager::ShutdownHandle
source · pub type ShutdownHandle = JoinHandle<()>;
Expand description
A future which awaits the completion of all managed tasks
Aliased Type§
struct ShutdownHandle { /* private fields */ }
Implementations§
source§impl<T> JoinHandle<T>
impl<T> JoinHandle<T>
sourcepub fn abort(&self)
pub fn abort(&self)
Abort the task associated with the handle.
Awaiting a cancelled task might complete as usual if the task was
already completed at the time it was cancelled, but most likely it
will fail with a cancelled JoinError
.
use tokio::time;
let mut handles = Vec::new();
handles.push(tokio::spawn(async {
time::sleep(time::Duration::from_secs(10)).await;
true
}));
handles.push(tokio::spawn(async {
time::sleep(time::Duration::from_secs(10)).await;
false
}));
for handle in &handles {
handle.abort();
}
for handle in handles {
assert!(handle.await.unwrap_err().is_cancelled());
}
sourcepub fn is_finished(&self) -> bool
pub fn is_finished(&self) -> bool
Checks if the task associated with this JoinHandle
has finished.
Please note that this method can return false
even if abort
has been
called on the task. This is because the cancellation process may take
some time, and this method does not return true
until it has
completed.
use tokio::time;
let handle1 = tokio::spawn(async {
// do some stuff here
});
let handle2 = tokio::spawn(async {
// do some other stuff here
time::sleep(time::Duration::from_secs(10)).await;
});
// Wait for the task to finish
handle2.abort();
time::sleep(time::Duration::from_secs(1)).await;
assert!(handle1.is_finished());
assert!(handle2.is_finished());
sourcepub fn abort_handle(&self) -> AbortHandle
pub fn abort_handle(&self) -> AbortHandle
Returns a new AbortHandle
that can be used to remotely abort this task.
Awaiting a task cancelled by the AbortHandle
might complete as usual if the task was
already completed at the time it was cancelled, but most likely it
will fail with a cancelled JoinError
.
use tokio::{time, task};
let mut handles = Vec::new();
handles.push(tokio::spawn(async {
time::sleep(time::Duration::from_secs(10)).await;
true
}));
handles.push(tokio::spawn(async {
time::sleep(time::Duration::from_secs(10)).await;
false
}));
let abort_handles: Vec<task::AbortHandle> = handles.iter().map(|h| h.abort_handle()).collect();
for handle in abort_handles {
handle.abort();
}
for handle in handles {
assert!(handle.await.unwrap_err().is_cancelled());
}