LOCK

FUNCTION

This command restricts the use of a file, allowing access only by the task that issued the LOCK command.

SYNTAX

LOCK link-name
      [BUSY PROCESS IS procedure]
      [ERROR PROCESS IS procedure]

link-name the name of the link to be locked.

procedure the name of a procedure to perform.

NOTES

This command may only be applied to a link that has already been opened by the task and is not currently opened by another task.
The BUSY procedure is performed if a link is opened by another task.
The ERROR procedure is performed if an error is encountered while executing the command.
A locked link is released by the CLOSE or UNLOCK command, or by script termination.

EXAMPLES

LOCK 4SCUSFL
      BUSY PROCESS IS TRY-AGAIN
      ERROR PROCESS IS BAD-TRY

SEE ALSO

CLOSE, LN, OPEN, TERMINATE, UNLOCK