USE PROC command

Summary

Privileges

Any user

Function

Model 204 can spool the USE data set output into a temporary user procedure. This option lets you save various system command outputs or program output into a temporary procedure.

Syntax

USE PROC number option

Where:

number

is the temporary procedure number (default = 0), for example, -1 or -2.

option

is HDRS, CC, A, I, R, or S (default = A). The following table describes these options. Note: The HDRS and/or CC options are specified in the command line before the other options. Spooling output to a temporary procedure Option Meaning Description HDRS Headers Allows the HDRCTL parameter and the SET HEADER and SET TRAILER statements to be recognized for the output. CC Carriage Control Inserts a one-byte carriage control character at the beginning of each line of output. If you specify the CC option, the maximum line length of lines output to the procedure is reduced by one, to a value of 254 bytes. A Append Adds the USE data output to the end of the current procedure. I Insert Shifts all procedures down one and creates a new one. Procedures closer to zero are not affected. (If you have procedures in zero to -10 positions and if you insert a procedure at -4 position, the current -4 through -10 must shift, but those in 0 to -3 positions are unmoved.) R Replace Deletes the old procedure and creates a new one. S Shift Shifts all procedures down one and creates a new one. Procedure 0 is overlaid by the lowest level procedure.

Usage

Because the USE PROC command manipulates temporary procedures, calling it from within a temporary procedure cannot always be permitted. You cannot issue a USE PROC command where it would manipulate the calling procedure or any procedure on the active INCLUDE chain. Attempts to do so are prevented, the transaction is cancelled, and following message is displayed.

M204:2478: 'USE PROC' REJECTED, WOULD OVERWRITE CURRENTLY ACTIVE PROC.

Temporary procedures are stored in CCATEMP. If an additional CCAPTEMP page is required to process a $BLDPROC call, but CCATEMP is full, then the request is cancelled and the entire temporary procedure is deleted. After the request is cancelled, the procedure does not contain everything up to the point of failure. In the event of CCATEMP filling while processing $BLDPROC, the following message is issued:

*** CANCELLING REQUEST: M204.0441: CCATEMP FULL: "USE PROCEDURE" COMMAND

Examples

Inserting a new procedure

In the following example you have five procedures:

PROC = 0 = 'A' PROC = -1 = 'B' PROC = -2 = 'C' PROC = -3 = 'D' PROC = -4 = 'E'

Insert a new procedure at Procedure -1 and shift the lower level procedures down one:

USE PROC -1 I

Result:

PROC = 0 = 'A' PROC = -1 = 'New_procedure' PROC = -2 = 'B' PROC = -3 = 'C' PROC = -4 = 'D'

The procedures lower than -1 shift down one, a new procedure replaces Procedure -1, the original Procedure -3 overlays the original Procedure -4.

Shifting down a procedure

You have the following procedures:

PROC = 0 = 'A' PROC = -1 = 'B' PROC = -2 = 'C' PROC = -3 = [no procedure exists] PROC = -4 = [no procedure exists]

Shift the procedures down and replace procedure -1:

USE PROC -1 S

Result:

PROC = 0 = [no procedure exists] PROC = -1 = 'New_procedure' PROC = -2 = 'B' PROC = -3 = 'C' PROC = -4 = [no procedure exists]

The procedures shift down one; a new procedure replaces Procedure -1; Procedure 0 is empty because Procedure -4, which was empty, overlays Procedure 0.