Purpose
Used to lock records or files.
Arguments
Argument | Input/Output | Value |
CODE | Input | 5 |
| Output | unchanged |
BFS | Input | BFS List |
| Output | unchanged |
HANDLE | Input | file handle |
| Output | unchanged |
NAME | Input | record key, if a record is being locked. Null, if a file is being locked. |
| Output | unchanged |
FMC | Input | lock type |
| Output | unchanged |
RECORD | Input | null |
| Output | lock semaphore |
STATUS | Input | unassigned |
| Output | returns true if lock successful |
The MFS should not alter the semaphore returned in the RECORD argument. This information is used by the system to set lock information stored internally in the system.
Called by
BASIC+ LOCK statement
