Guardian Procedure Calls Reference Manual

mode, the call either fails with file-system error 73 ("record is locked") or is placed in the
locking queue.
◦ Record pointers after LOCKREC
After a call to LOCKREC, the current-record, next-record, and end-of-file pointers remain
unchanged.
• Avoiding or resolving deadlocks
One way to avoid deadlock is to use one of the alternate locking modes that can be established
by SETMODE function 4. A common method of avoiding deadlock situations is to lock records
in some predetermined order. Deadlocks can be resolved if you lock records using a nowait
open and call AWAITIO with a timeout specified.
OSS Considerations
This procedure operates only on Guardian objects. If an OSS file is specified, error 2 occurs.
Related Programming Manual
For programming information about the LOCKREC file-procedure, see the Enscribe Programmer's
Guide and the Guardian Programmer's Guide.
778 Guardian Procedure Calls (L)