Struct ManyRecordWriteGuard 

pub struct ManyRecordWriteGuard { /* private fields */ }

RAII guard for the lock sets of a declared record set — the DBManyLocker equivalent.

Acquired by PvDatabase::lock_records over every member record of a multi-record transaction (QSRV atomic group PUT/GET, pvalink atomic scan-on-update epoch) and held across the whole member loop. While alive, every plain write to any record of any of those sets blocks.