Struct tracing_core::callsite::DefaultCallsite

pub struct DefaultCallsite {
    interest: AtomicU8,
    registration: AtomicU8,
    meta: &'static Metadata<'static>,
    next: AtomicPtr<Self>,
}

A default Callsite implementation.

Fields

interest: AtomicU8

registration: AtomicU8

meta: &'static Metadata<'static>

next: AtomicPtr<Self>

Implementations

impl DefaultCallsite

const UNREGISTERED: u8 = 0u8

const REGISTERING: u8 = 1u8

const REGISTERED: u8 = 2u8

const INTEREST_NEVER: u8 = 0u8

const INTEREST_SOMETIMES: u8 = 1u8

const INTEREST_ALWAYS: u8 = 2u8

pub const fn new(meta: &'static Metadata<'static>) -> Self

Returns a new DefaultCallsite with the specified Metadata.

pub fn register(&'static self) -> Interest

Registers this callsite with the global callsite registry.

If the callsite is already registered, this does nothing. When using DefaultCallsite, this method should be preferred over [tracing_core::callsite::register], as it ensures that the callsite is only registered a single time.

Other callsite implementations will generally ensure that callsites are not re-registered through another mechanism.

See the documentation on callsite registration for details on the global callsite registry.

pub fn interest(&'static self) -> Interest

Returns the callsite’s cached Interest, or registers it for the first time if it has not yet been registered.

Trait Implementations

impl Callsite for DefaultCallsite

fn set_interest(&self, interest: Interest)

Sets the Interest for this callsite.

fn metadata(&self) -> &Metadata<'static>

Returns the metadata associated with the callsite.

impl Debug for DefaultCallsite

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

Formats the value using the given formatter.