Struct ManyRecordWriteGuard 

pub struct ManyRecordWriteGuard { /* private fields */ }

RAII guard for an ordered set of record advisory write gates — 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); held across the whole member loop. While alive, every plain CA/PVA write to any of those records — and every other multi-record transaction sharing any of them — blocks. !Send, exactly as RecordWriteGuard is.