Struct tracing::subscriber::NoSubscriber
source · [−]pub struct NoSubscriber(_);
Expand description
A no-op Subscriber
.
NoSubscriber
implements the Subscriber
trait by never being enabled,
never being interested in any callsite, and dropping all spans and events.
Implementations
sourceimpl NoSubscriber
impl NoSubscriber
sourcepub const fn new() -> NoSubscriber
pub const fn new() -> NoSubscriber
Returns a new NoSubscriber
.
Trait Implementations
sourceimpl Clone for NoSubscriber
impl Clone for NoSubscriber
sourcefn clone(&self) -> NoSubscriber
fn clone(&self) -> NoSubscriber
Returns a copy of the value. Read more
1.0.0const fn clone_from(&mut self, source: &Self)
const fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresourceimpl Debug for NoSubscriber
impl Debug for NoSubscriber
sourceimpl Default for NoSubscriber
impl Default for NoSubscriber
sourcefn default() -> NoSubscriber
fn default() -> NoSubscriber
Returns the “default value” for a type. Read more
sourceimpl Subscriber for NoSubscriber
impl Subscriber for NoSubscriber
sourcefn register_callsite(&self, &'static Metadata<'static>) -> Interest
fn register_callsite(&self, &'static Metadata<'static>) -> Interest
sourcefn new_span(&self, &Attributes<'_>) -> Id
fn new_span(&self, &Attributes<'_>) -> Id
sourcefn record_follows_from(&self, _span: &Id, _follows: &Id)
fn record_follows_from(&self, _span: &Id, _follows: &Id)
sourcefn on_register_dispatch(&self, subscriber: &Dispatch)
fn on_register_dispatch(&self, subscriber: &Dispatch)
sourcefn max_level_hint(&self) -> Option<LevelFilter>
fn max_level_hint(&self) -> Option<LevelFilter>
Returns the highest verbosity level that this
Subscriber
will
enable, or None
, if the subscriber does not implement level-based
filtering or chooses not to implement this method. Read moresourcefn event_enabled(&self, event: &Event<'_>) -> bool
fn event_enabled(&self, event: &Event<'_>) -> bool
sourcefn clone_span(&self, id: &Id) -> Id
fn clone_span(&self, id: &Id) -> Id
sourcefn drop_span(&self, _id: Id)
fn drop_span(&self, _id: Id)
👎Deprecated since 0.1.2: use
Subscriber::try_close
insteadThis method is deprecated. Read more
sourcefn current_span(&self) -> Current
fn current_span(&self) -> Current
Returns a type representing this subscriber’s view of the current span. Read more
sourceunsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>
unsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>
If
self
is the same type as the provided TypeId
, returns an untyped
*const
pointer to that type. Otherwise, returns None
. Read moreimpl Copy for NoSubscriber
Auto Trait Implementations
impl RefUnwindSafe for NoSubscriber
impl Send for NoSubscriber
impl Sync for NoSubscriber
impl Unpin for NoSubscriber
impl UnwindSafe for NoSubscriber
Blanket Implementations
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstablefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
impl<T> ToOwned for Twhere
T: Clone,
impl<T> ToOwned for Twhere
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
fn 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