Struct DevNullTracker 

pub struct DevNullTracker;

A tracker that does nothing.

This can be useful for benchmarks that want to have minimum overheads.

Trait Implementations

impl Track for DevNullTracker

fn unique_id(&self) -> Id

Allocate a new global ID

fn enabled_level(&self, _id: Id) -> Level

Determine the most verbose tracking level enabled for an entity.

fn monitoring_window_size_for(&self, _id: Id) -> Option<u64>

Return the monitoring window size if it is to be enabled. Entity looked up by its ID.

fn add_entity( &self, _id: Id, _entity_name: &str, _alternative_names: AlternativeNames<'_>, ) -> Level

Record an entity being created.

fn enter(&self, _id: Id, _obj: Id)

Track when an entity with the given ID arrives.

fn exit(&self, _id: Id, _obj: Id)

Track when an entity with the given ID leaves.

fn value(&self, _id: Id, _value: f64)

Track an entity setting a value.

fn begin_activity(&self, _activity: Id, _lane: Id, _name: &str)

Track the beginning of a named activity on a lane.

fn end_activity(&self, _activity: Id)

Track the end of the current activity on a lane.

fn add_to_group(&self, _activity: Id, _group_id: Id)

Track when an activity becomes a member of a group.

fn remove_from_group(&self, _activity: Id, _group_id: Id)

Track when an activity is no longer a member of a group.

fn capacity(&self, _id: Id, _capacity: Capacity)

Track the capacity available in an entity.

fn create_entity(&self, _created_by: Id, _id: Id, _name: &str)

Track when an entity with the given ID is created.

fn create_monitor(&self, _created_by: Id, _id: Id, _name: &str)

Track when a monitor with the given ID is created.

fn create_lane(&self, _created_by: Id, _id: Id, _name: &str)

Track when a lane with the given ID is created.

fn create_group(&self, _created_by: Id, _id: Id, _name: &str)

Track when a group with the given ID is created.

fn create_object( &self, _created_by: Id, _id: Id, _size: usize, _units: &str, _req_type: u8, _details: &str, )

Track when an object with the given ID is created.

fn destroy(&self, _id: Id, _obj: Id)

Track when an entity with the given ID is destroyed.

fn connect(&self, _connect_from: Id, _connect_to: Id)

Track when an entity is connected to another entity

fn log(&self, _id: Id, _level: Level, _msg: Arguments<'_>)

Track a log message of the given level.

fn time(&self, _set_by: Id, _time_ns: f64)

Advance the time to the time specified in ns.

fn shutdown(&self)

Perform any pre-exit shutdown/cleanup

fn is_entity_enabled(&self, id: Id, level: Level) -> bool

Determine whether tracking is enabled at a given level for an entity.