Struct MetricsRegistry 

pub struct MetricsRegistry { /* private fields */ }

Global registry of named counters and histograms. Indexed by static string keys; lookups are O(log N) on a BTreeMap. Lock is only held during register/lookup, not during increment.

Implementations

impl MetricsRegistry

pub fn global() -> &'static Self

Process-wide registry. First access lazily initializes.

pub fn register_counter(&self, name: &'static str, c: &'static Counter)

Register a 'static counter so it shows up in snapshot(). Idempotent — re-registering with the same pointer is a no-op.

pub fn register_histogram(&self, name: &'static str, h: &'static Histogram)

pub fn snapshot(&self) -> Snapshot

Snapshot all metrics into a serializable map. Useful for dumping to a log / exporting to Prometheus.