Struct tracing_core::span::Id

pub struct Id(_);

Identifies a span within the context of a subscriber.

They are generated by Subscribers for each span as it is created, by the new_span trait method. See the documentation for that method for more information on span ID generation.

Implementations

impl Id

pub fn from_u64(u: u64) -> Self

Constructs a new span ID from the given u64.

Note: Span IDs must be greater than zero.

Panics

• If the provided u64 is 0.

pub const fn from_non_zero_u64(id: NonZeroU64) -> Self

Constructs a new span ID from the given NonZeroU64.

Unlike Id::from_u64, this will never panic.

pub fn into_u64(&self) -> u64

Returns the span’s ID as a u64.

pub const fn into_non_zero_u64(&self) -> NonZeroU64

Returns the span’s ID as a NonZeroU64.

Trait Implementations

impl Clone for Id

fn clone(&self) -> Id

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Id

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> From<&'a Id> for Option<Id>

fn from(id: &'a Id) -> Self

Performs the conversion.

impl Hash for Id

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<Id> for Id

fn eq(&self, other: &Id) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Id) -> bool

This method tests for !=.

impl Eq for Id

impl StructuralEq for Id

impl StructuralPartialEq for Id