pub(super) struct ShutdownProbe(Option<Rc<RefCell<ButtonHandle>>>);Expand description
Convenient wrapper around an optional ButtonHandle that can be used to check whether a
dataflow is shutting down.
Instances created through the Default impl act as if the dataflow never shuts down.
Instances created through ShutdownProbe::new defer to the wrapped button.
Tuple Fields§
§0: Option<Rc<RefCell<ButtonHandle>>>Implementations§
Source§impl ShutdownProbe
impl ShutdownProbe
Sourcefn new(button: ButtonHandle) -> Self
fn new(button: ButtonHandle) -> Self
Construct a ShutdownProbe instance that defers to button.
Sourcepub(super) fn in_shutdown(&self) -> bool
pub(super) fn in_shutdown(&self) -> bool
Returns whether the dataflow is in the process of shutting down.
The result of this method is synchronized among workers: It only returns true once all
workers have dropped their shutdown token.
Sourcepub(super) fn in_local_shutdown(&self) -> bool
pub(super) fn in_local_shutdown(&self) -> bool
Returns whether the dataflow is in the process of shutting down on the current worker.
In contrast to ShutdownProbe::in_shutdown, this method returns true as soon as the
current worker has dropped its shutdown token, without waiting for other workers.
Trait Implementations§
Source§impl Clone for ShutdownProbe
impl Clone for ShutdownProbe
Source§fn clone(&self) -> ShutdownProbe
fn clone(&self) -> ShutdownProbe
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl Default for ShutdownProbe
impl Default for ShutdownProbe
Source§fn default() -> ShutdownProbe
fn default() -> ShutdownProbe
Returns the “default value” for a type. Read more
Auto Trait Implementations§
impl Freeze for ShutdownProbe
impl !RefUnwindSafe for ShutdownProbe
impl !Send for ShutdownProbe
impl !Sync for ShutdownProbe
impl Unpin for ShutdownProbe
impl !UnwindSafe for ShutdownProbe
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