Struct EventMetadata

pub struct EventMetadata {
    pub ts: u64,
    pub tid: i64,
}

Metadata for an event, containing the timestamp and thread ID.

Fields

ts: u64

Timestamp of the event in nanoseconds since the UNIX epoch.

tid: i64

Thread ID of the event.

Implementations

impl EventMetadata

pub fn timestamp(&self) -> Option<SystemTime>

Return the timestamp of the event as an Option<SystemTime>.

If the timestamp is u64::MAX, it indicates that no timestamp was set, and None is returned.

pub fn write_header<W: Write>( &self, len: u32, event_type: u16, nparams: u32, writer: W, ) -> Result<()>

Write event header

To form a valid event, after calling this method, the caller must write out the payload at exactly len - 26 bytes, containing nparam lengths (as the proper type) and the parameter values themselves.

pub fn write_header_with_lengths<W: Write, L: Into<u32> + Copy, const N: usize>( &self, event_type: u16, lengths: [L; N], writer: W, ) -> Result<()>

Write event header and parameter lengths

To form a valid event, after calling this method, the caller must write out the payload for each parameter, lengths[i] bytes in length.

Trait Implementations

impl Clone for EventMetadata

fn clone(&self) -> EventMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EventMetadata

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

Formats the value using the given formatter.

impl Default for EventMetadata

fn default() -> Self

Returns the “default value” for a type.