Struct ProcessSnapshot 

pub struct ProcessSnapshot {
    pub changed_fields: Vec<(String, EpicsValue, EventMask)>,
}

Snapshot of changes from a process cycle, used for notify outside lock.

Fields

changed_fields: Vec<(String, EpicsValue, EventMask)>

(field, value, mask) — every posted field carries its own DBE_* posting mask, mirroring C’s per-field db_post_events(prec, &field, mask). One process cycle posts different classes per field: a deadband-gated readback narrows to the deadbands that actually crossed (MDEL → DBE_VALUE, ADEL → DBE_LOG; motorRecord.cc monitor() 3477-3507, aiRecord.c monitor()), while a change-detected auxiliary field posts DBE_VALUE | DBE_LOG (motorRecord.cc 3522-3645 DBE_VAL_LOG; calcRecord.c:420). A single record-wide mask collapses that granularity — an archive-only deadband crossing would wrongly reach DBE_VALUE subscribers whenever any other field changed in the same pass.

Implementations

impl ProcessSnapshot

pub fn published_mask(&self) -> EventMask

The union of every DBE_* class this cycle actually published — the port’s answer to “what did db_post_events send for this record”.

A field carrying an empty mask is not posted at all (RecordInstance::notify_from_snapshot skips it), so an empty union means the cycle published nothing and no monitor of any class fired.