Struct Id

pub struct Id(/* private fields */);

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) -> Id

Available on crate feature cpu_os_threads only.

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: NonZero<u64>) -> Id

Available on crate feature cpu_os_threads only.

Constructs a new span ID from the given NonZeroU64.

Unlike Id::from_u64, this will never panic.

pub fn into_u64(&self) -> u64

Available on crate feature cpu_os_threads only.

Returns the span’s ID as a u64.

pub const fn into_non_zero_u64(&self) -> NonZero<u64>

Available on crate feature cpu_os_threads only.

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<(), Error>

Formats the value using the given formatter.

impl Hash for Id

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Id

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Id

impl StructuralPartialEq for Id