128 lines
7.9 KiB
HTML
128 lines
7.9 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="Example: Watch exit program" />
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<meta name="abstract" content="This is sample code for a watch trace exit program. It is written in control language (CL)." />
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<meta name="description" content="This is sample code for a watch trace exit program. It is written in control language (CL)." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1997, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1997, 2006" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Watch exit program</title>
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</head>
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<body id="exitprogramexample"><a name="exitprogramexample"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Watch exit program</h1>
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<div><p><span>This is sample code for a watch trace exit
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program. It is written in control language (CL).</span></p>
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<div class="section"><div class="p">Use this exit program as a starting point to help you create your
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own watch trace program. You can modify the code to allow the program to perform
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additional function. Find out how you can <a href="rzakuextendwatchexitpgm.htm#extendwatchexitpgm">extend
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the capability of the watch function</a> using the watch exit program example. <div class="note"><span class="notetitle">Note:</span> By
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using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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<pre> /*********************************************************/
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/* THIS IS A SAMPLE CODE FOR WATCH FOR TRACE EVENT */
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/* FACILITY */
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/* */
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/* FUNCTION: WHEN THE TRACE OPTION SETTING PARAMETER */
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/* INDICATES THAT A MESSAGE ID MATCHED WITH THE ONE BEING*/
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/* WATCHED, THIS PROGRAM WILL PRINT THE HISTORY LOG AND */
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/* STOP THE TRACE COMMAND EXECUTION. OTHERWISE, THIS */
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/* WILL INDICATE TO CONTINUE WITH THE EXECUTION. */
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/* */
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/* NOTE: MYLIB/MYOBJECT IS A DATA AREA THAT IS */
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/* CONTINUOUSLY CHANGING DURING THE PROCESS. THE USER */
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/* WANTS TO DUMP IT PERIODICALLY TO CHECK HOW ITS */
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/* CONTENT IS CHANGING AND WHAT IS THE FINAL VALUE */
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/* WHEN THE WATCHED MESSAGE OCCURS. THIS DATA AREA */
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/* WILL BE DUMPED AT THE BEGINNING (*ON), WHEN THE */
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/* INTERVAL TIME ELAPSES (*INTVAL), AND WHEN THE */
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/* WATCHED MESSAGE OCCURS (*MSGID) */
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/* */
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/* THE FOLLOWING IS AN EXAMPLE OF THE WATCH FOR TRACE */
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/* EVENTS PARAMETERS, AS THEY WOULD BE SPECIFIED FOR A */
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/* TRACE COMMAND ISSUING THE CURRENT SAMPLE CODE: */
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/* */
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/* WCHMSG((CPF0001)) TRCPGM(MYLIB/WCHEXTP) TRCPGMITV(30) */
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/*********************************************************/
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PGM PARM(&TRCOPTSET &RESERVED &OUTPUT &COMPDATA)
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DCL VAR(&TRCOPTSET) TYPE(*CHAR) LEN(10) /* +
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Reason why the program was called */
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DCL VAR(&RESERVED) TYPE(*CHAR) LEN(10) /* This +
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parameter is only used of TRCTCPAPP +
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command and it is not relevant for Watch +
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for Trace Event Facility */
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DCL VAR(&OUTPUT) TYPE(*CHAR) LEN(10) /* +
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Indicates if watch facility should stop +
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or continue running */
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DCL VAR(&COMPDATA) TYPE(*CHAR) LEN(92) /* Not +
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needed for this sample */
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/*********************************************************/
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/* BEGIN OF PROGRAM PROCESSING */
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/*********************************************************/
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IF COND(&TRCOPTSET *EQ '*ON ') THEN(DO) +
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/* If the program was called at the +
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beginning of the processing. */
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/* This section is usually used to set up +
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the environment before the trace starts */
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DMPOBJ OBJ(MYLIB/MYOBJECT) OBJTYPE(*DTAARA) /* Dump +
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Object for problem determination */
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CHGVAR VAR(&OUTPUT) VALUE('*CONTINUE ') /* Let the +
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trace to continue running */
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ENDDO /* End if *ON */
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ELSE CMD(IF COND(&TRCOPTSET *EQ '*MSGID ') +
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THEN(DO)) /* If the message id matched */
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DSPLOG LOG(QHST) OUTPUT(*PRTSECLVL) /* Print the +
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History Log */
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DMPOBJ OBJ(MYLIB/MYOBJECT) OBJTYPE(*DTAARA) /* Dump +
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object for problem determination */
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CHGVAR VAR(&OUTPUT) VALUE('*STOP ') /* +
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Indicates Watch Facility to Stop */
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ENDDO /* End if *MSGID */
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ELSE CMD(IF COND(&TRCOPTSET *EQ '*INTVAL ') +
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THEN(DO)) /* If the exit program was +
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called because the interval +
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elapsed */
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/* This section is usually used to perform +
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tasks periodically. Like dumping objects, +
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checking conditions and optionally end +
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the watch facility */
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DMPOBJ OBJ(MYLIB/MYOBJECT) OBJTYPE(*DTAARA) /* Dump +
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object for problem determination */
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CHGVAR VAR(&OUTPUT) VALUE('*CONTINUE ') /* Let the +
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trace and the watch facility to continue +
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running */
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ENDDO /* End if *INTVAL */
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ELSE CMD(CHGVAR VAR(&OUTPUT) VALUE('*CONTINUE ')) +
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/* Otherwise, watch facility will +
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continue running */
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ENDPGM</pre>
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</div>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakuwatchexitpgmandexample.htm" title="You can specify exit programs in the trace program parameter to extend the capability of the watch function.">Example: Watch exit program</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzakuextendwatchexitpgm.htm" title="Using the example exit program as a starting point, you can modify the code to allow the program to perform additional function.">Extend the watch function using the watch exit program example</a></div>
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</div>
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</div>
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</body>
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</html>
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