Struct tracing_core::subscriber::Interest
source · [−]pub struct Interest(_);
Expand description
Indicates a Subscriber
’s interest in a particular callsite.
Subscriber
s return an Interest
from their register_callsite
methods
in order to determine whether that span should be enabled or disabled.
Implementations
sourceimpl Interest
impl Interest
sourcepub fn never() -> Self
pub fn never() -> Self
Returns an Interest
indicating that the subscriber is never interested
in being notified about a callsite.
If all active subscribers are never()
interested in a callsite, it will
be completely disabled unless a new subscriber becomes active.
sourcepub fn sometimes() -> Self
pub fn sometimes() -> Self
Returns an Interest
indicating the subscriber is sometimes interested
in being notified about a callsite.
If all active subscribers are sometimes
or never
interested in a
callsite, the currently active subscriber will be asked to filter that
callsite every time it creates a span. This will be the case until a new
subscriber expresses that it is always
interested in the callsite.
sourcepub fn always() -> Self
pub fn always() -> Self
Returns an Interest
indicating the subscriber is always interested in
being notified about a callsite.
If any subscriber expresses that it is always()
interested in a given
callsite, then the callsite will always be enabled.
sourcepub fn is_never(&self) -> bool
pub fn is_never(&self) -> bool
Returns true
if the subscriber is never interested in being notified
about this callsite.
sourcepub fn is_sometimes(&self) -> bool
pub fn is_sometimes(&self) -> bool
Returns true
if the subscriber is sometimes interested in being notified
about this callsite.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Interest
impl Send for Interest
impl Sync for Interest
impl Unpin for Interest
impl UnwindSafe for Interest
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more