Guardian Programming Reference Summary for pTAL and TAL

Procedure Calls Summary (R-Z)
Guardian Programming Reference Summary for pTAL and TAL—522631-001
8-5
READUPDATE[X]
Reads data from a disk or process file in anticipation of a subsequent write to the file.
READUPDATELOCK[X}
Locks, then reads the record from the current position in the file in the same manner as
the combination of LOCKREC and READUPDATE[X]. This procedure operates only
on Guardian objects.
CALL READUPDATE[X] ( filenum
,buffer
,read-count
,[ count-read ]
,[ tag ] );
filenum, INT:value input
buffer, output
INT:ref:* (Use with READUPDATE)
STRING .EXT:ref:* (Use with READUPDATEX)
read-count, INT:value input
count-read, output
INT:ref:1 (Use with READUPDATE)
INT .EXT:ref:1 (Use with READUPDATEX)
tag, INT(32):value input
< (CCL) An error occurred (call FILEINFO).
= (CCE) The READUPDATE[X] is successful.
> (CCG) A system message is received through $RECEIVE.
CALL READUPDATELOCK[X] ( filenum
,buffer
,read-count
,[ count-read ]
,[ tag ] );