Struct PvCounters 

pub struct PvCounters {
    pub events_received: AtomicU64,
    pub events_stored: AtomicU64,
    pub first_event_unix_secs: AtomicI64,
    pub buffer_overflow_drops: AtomicU64,
    pub timestamp_drops: AtomicU64,
    pub type_change_drops: AtomicU64,
    pub disconnect_count: AtomicU64,
    pub last_disconnect_unix_secs: AtomicI64,
    pub transient_error_count: AtomicU64,
    pub latest_observed_dbr: AtomicI32,
}

Per-PV diagnostic counters for the BPL drop / rate / connection reports. All counts are monotonic across the PV’s lifetime; the rate handlers compute deltas against first_event_unix_secs.

Tracked here (not in ConnectionInfo) so they survive transient disconnects and are read lock-free from the report endpoints.

Fields

events_received: AtomicU64

Total events produced by monitor/scan, including those that later got dropped before write.

events_stored: AtomicU64

Total events successfully written to storage.

first_event_unix_secs: AtomicI64

Unix-epoch seconds of the first event we ever saw for this PV. 0 = “no event yet” (i64 because Atomic<Option<…>> doesn’t exist).

buffer_overflow_drops: AtomicU64

Number of events the bounded sample channel rejected (write loop falling behind producer). Surfaces as getDroppedEventsBufferOverflowReport.

timestamp_drops: AtomicU64

Number of events whose timestamp went backwards relative to the previously-stored event. Java archiver’s DroppedEventsTimestampReport.

type_change_drops: AtomicU64

Number of events whose runtime DBR type didn’t match the PvRecord’s stored type — the engine drops these because mixing types in one PB partition would corrupt downstream readers.

disconnect_count: AtomicU64

Number of disconnect transitions seen on this PV’s CA channel. LostConnectionsReport.

last_disconnect_unix_secs: AtomicI64

Last unix-epoch seconds of disconnect transition.

transient_error_count: AtomicU64

Number of transient subscribe / monitor-recv / scan-read errors (Java parity 8fe73eb). Distinct from disconnect_count — these are recoverable per-attempt failures rather than confirmed link drops.

latest_observed_dbr: AtomicI32

Latest DBR type observed from CA that did not match the archive-time recorded type (Java parity 9f2234f). -1 = no mismatch ever seen.

Trait Implementations

impl Debug for PvCounters

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

Formats the value using the given formatter.

impl Default for PvCounters

fn default() -> Self

Returns the “default value” for a type.

impl From<&PvCounters> for PvCountersSnapshot

fn from(c: &PvCounters) -> Self

Converts to this type from the input type.