USE PROC command: Difference between revisions

From m204wiki
Jump to navigation Jump to search
mNo edit summary
Line 58: Line 58:


==Usage==
==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.  
Because the <var>USE PROC</var> command manipulates temporary procedures, calling it from within a temporary procedure cannot always be permitted. You cannot issue a <var>USE PROC</var> command where it would manipulate the calling procedure or any procedure on the active <var>INCLUDE</var> chain. Attempts to do so are prevented, the transaction is cancelled, and following message is displayed.  
<p class="code">M204:2478: 'USE PROC' REJECTED, WOULD OVERWRITE CURRENTLY ACTIVE PROC.
<p class="code">M204:2478: 'USE PROC' REJECTED, WOULD OVERWRITE CURRENTLY ACTIVE PROC.
</p>
</p>
<p>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 $BLDPROC, the following message is issued: </p>
<p>
Temporary procedures are stored in CCATEMP. If an additional CCAPTEMP page is required to process a <var>$BLDPROC</var> 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 <var>$BLDPROC</var>, the following message is issued: </p>
<p class="code">*** CANCELLING REQUEST: M204.0441: CCATEMP FULL: "USE PROCEDURE" COMMAND
<p class="code">*** CANCELLING REQUEST: M204.0441: CCATEMP FULL: "USE PROCEDURE" COMMAND
</p>
</p>
==Examples==
==Examples==
====Inserting a new procedure====
====Inserting a new procedure====
<p>In the following example you have five procedures: </p>
<p>
In the following example you have five procedures: </p>
<p class="code">PROC = 0 = 'A'
<p class="code">PROC = 0 = 'A'
PROC = -1 = 'B'
PROC = -1 = 'B'
Line 73: Line 77:
PROC = -4 = 'E'
PROC = -4 = 'E'
</p>
</p>
<p>Insert a new procedure at Procedure -1 and shift the lower level procedures down one: </p>
<p>
Insert a new procedure at Procedure -1 and shift the lower level procedures down one: </p>
<p class="code">USE PROC -1 I
<p class="code">USE PROC -1 I
</p>
</p>
<p>Result: </p>
<p>
Result: </p>
<p class="code">PROC = 0 = 'A'
<p class="code">PROC = 0 = 'A'
PROC = -1 = 'New_procedure'
PROC = -1 = 'New_procedure'
Line 83: Line 89:
PROC = -4 = 'D'
PROC = -4 = 'D'
</p>
</p>
<p>The procedures lower than -1 shift down one, a new procedure replaces Procedure -1, the original Procedure -3 overlays the original Procedure -4. </p>
<p>
The procedures lower than -1 shift down one, a new procedure replaces Procedure -1, the original Procedure -3 overlays the original Procedure -4. </p>
 
====Shifting down a procedure====
====Shifting down a procedure====
<p>You have the following procedures: </p>
<p>
You have the following procedures: </p>
<p class="code">PROC = 0 = 'A'
<p class="code">PROC = 0 = 'A'
PROC = -1 = 'B'
PROC = -1 = 'B'
Line 92: Line 101:
PROC = -4 = [no procedure exists]
PROC = -4 = [no procedure exists]
</p>
</p>
<p>Shift the procedures down and replace procedure -1: </p>
<p>
Shift the procedures down and replace procedure -1: </p>
<p class="code">USE PROC -1 S
<p class="code">USE PROC -1 S
</p>
</p>
<p>Result: </p>
<p>
Result: </p>
<p class="code">PROC = 0 = [no procedure exists]
<p class="code">PROC = 0 = [no procedure exists]
PROC = -1 = 'New_procedure'
PROC = -1 = 'New_procedure'
Line 102: Line 113:
PROC = -4 = [no procedure exists]
PROC = -4 = [no procedure exists]
</p>
</p>
<p>The procedures shift down one; a new procedure replaces Procedure -1; Procedure 0 is empty because Procedure -4, which was empty, overlays Procedure 0.</p>
<p>
The procedures shift down one; a new procedure replaces Procedure -1; Procedure 0 is empty because Procedure -4, which was empty, overlays Procedure 0.</p>
 
[[Category: General user commands]]
[[Category: General user commands]]
[[Category:Commands]]
[[Category:Commands]]

Revision as of 18:18, 16 April 2014

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.