ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/xwchtcpe.htm

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<title>Trace Exit Program for Trace TCP/IP Application command</title>
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<h2>Trace Exit Program for Trace TCP/IP Application command</h2>
<div class="box" style="width: 60%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Trace option setting</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Char(10)</td>
</tr>
<tr>
<td align="center" valign="top">2</td>
<td align="left" valign="top">Application</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Char(10)</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">Error detected</td>
<td align="left" valign="top">Output</td>
<td align="left" valign="top">Char(10)</td>
</tr>
<tr>
<td align="center" valign="top">4</td>
<td align="left" valign="top">Comparison data<sup><a href=
"#note">1</a></sup></td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Char(*)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;QSYSINC/H member name: ESCWCHT<br>
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<br>
</div>
<p><strong><a name="note">Note 1</a>:</strong> Valid only when watch for trace
event facility is enabled (WCHMSG or WCHLICLOG parameters were specified)<br>
<br>
</p>
<p>The Trace TCP/IP Application (TRCTCPAPP) command has the capability to call a
user-written program, if specified in the TRCPGM parameter. This user written
program will be called in the following circumstances:</p>
<p>For SET(*ON), the trace program will be called:</p>
<ul>
<li>Before the application trace starts.</li>
<li>After the communications and Licensed Internal Code (LIC) traces, if requested, start.</li>
</ul>
<p>For SET(*OFF), the trace program will be called:</p>
<ul>
<li>Before the LIC traces, if requested, end.</li>
<li>After the communications trace, if requested, ends.</li>
<li>After the application trace ends.</li>
</ul>
<p>For SET(*END), the trace program will be called:</p>
<ul>
<li>After the LIC and communications traces, if requested, end.</li>
<li>After the application trace ends.</li>
</ul>
<p>Also, the Trace TCP/IP Application (TRCTCPAPP) command has the capability to
watch for a specific event and end the trace when this event occurs. An event
can be a message being sent to a specific message queue, history log or job
log; or a LIClog. If specified in the TRCPGM parameter, the watch for trace
event facility will call a user-written program at the moments specified in the
Trace option setting parameter.</p>
<p>See the online help for more information on the TRCTCPAPP command.<br>
</p>
<br>
<!-- Please NOTE: DO NOT DELETE THIS SECTION if this API has no authorities and locks. -->
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<h3>Authorities and Locks</h3>
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<p>None.</p>
<br>
<h3>Required Parameter Group</h3>
<dl>
<dt><strong>Trace option setting</strong></dt>
<dd>INPUT; CHAR(10)
<p>The reason indicating the moment at which the user-written program was
called. The possible values are:</p>
<table border>
<!-- cols="15 85" -->
<tr>
<td align="left" valign="top">*ON</td>
<td align="left" valign="top">- The collection of trace information is started,
or&nbsp;<br>
- The watch for trace facility is starting<sup>1</sup>.</td>
</tr>
<tr>
<td>*OFF</td>
<td>The collection of trace information is stopped and the trace information is
written to spooled printer files of the user.&nbsp;</td>
</tr>
<tr>
<td>*END</td>
<td>Tracing is ended and all trace information is deleted. No trace information
output is created.</td>
</tr>
<tr>
<td>*MSGID<sup>1</sup></td>
<td>A match on a message id specified on WCHMSG parameter occurred.</td>
</tr>
<tr>
<td align="left" valign="top">*LICLOG<sup>1</sup></td>
<td align="left" valign="top">A match on a LIC log specified on the WCHLICLOG
parameter occurred.</td>
</tr>
<tr>
<td>*CMPDATA<sup>1</sup></td>
<td>The major and minor code of a LIC log matched, but the comparison data did
not.</td>
</tr>
<tr>
<td>*INTVAL<sup>1</sup></td>
<td>The time interval specified on TRCPGMITV parameter is elapsed.</td>
</tr>
<tr>
<td>*WCHTIMO<sup>1</sup></td>
<td>The length of time to watch specified on WCHTIMO is elapsed.</td>
</tr>
</table>
<br>
</dd>
<dt><strong>Application.</strong></dt>
<dd>INPUT; CHAR(10)
<p>The possible values for the "Application" parameter are the same as the
values for the APP parameter on the TRCTCPAPP command. Ignored by watch for
trace event facility.<br>
<br>
</p>
</dd>
<dt><strong>Error detected</strong></dt>
<dd>OUTPUT; CHAR(10)
<p>Indicates if the trace event facility should stop or continue running, or if
an error on the user-written program was found. The possible values are:</p>
<ul>
<li>*CONTINUE<sup>1</sup> - The trace and the watch for trace event facility.</li>
<li>*STOP<sup>1</sup> - The trace and the watch for trace event facility will be ended.</li>
<li>*ERROR - Error detected by customer trace program.</li>
</ul>
<br>
</dd>
<dt><strong>Comparison data</strong></dt>
<dd>INPUT; CHAR(*)
<p>The format of the trace information depends on the Trace option setting
causing the exit program to be called. The format of the Comparison data is as
follows if the Trace option setting is *MSGID:</p>
<table border width="80%">
<tr>
<th align="center" valign="bottom" colspan="2">Offset</th>
<th align="left" valign="bottom" rowspan="2">Type</th>
<th align="left" valign="bottom" rowspan="2">Field</th>
</tr>
<tr>
<th align="center" valign="bottom">Dec</th>
<th align="center" valign="bottom">Hex</th>
</tr>
<tr>
<td align="center" valign="top" width="10%">0</td>
<td align="center" valign="top" width="10%">0</td>
<td align="left" valign="top" width="20%">BINARY(4)</td>
<td align="left" valign="top" width="60%">Length of trace information</td>
</tr>
<tr>
<td align="center" valign="top">4</td>
<td align="center" valign="top">4</td>
<td align="left" valign="top">CHAR(7)</td>
<td align="left" valign="top">Message ID</td>
</tr>
<tr>
<td align="center" valign="top">11</td>
<td align="center" valign="top">B</td>
<td align="left" valign="top">CHAR(9)</td>
<td align="left" valign="top">Reserved</td>
</tr>
<tr>
<td align="center" valign="top">20</td>
<td align="center" valign="top">14</td>
<td align="left" valign="top">BINARY(4)</td>
<td align="left" valign="top">Offset to comparison data</td>
</tr>
<tr>
<td align="center" valign="top">24</td>
<td align="center" valign="top">18</td>
<td align="left" valign="top">BINARY(4)</td>
<td align="left" valign="top">Length of comparison data</td>
</tr>
<tr>
<td align="center" valign="top">28</td>
<td align="center" valign="top">1C</td>
<td align="left" valign="top">CHAR(*)</td>
<td align="left" valign="top">Message comparison data</td>
</tr>
</table>
<br>
<p>The format of the Comparison data is as follows if the Trace option setting
is *LICLOG or *CMPDATA:</p>
<table border width="80%">
<tr>
<th align="center" valign="bottom" colspan="2">Offset</th>
<th align="left" valign="bottom" rowspan="2">Type</th>
<th align="left" valign="bottom" rowspan="2">Field</th>
</tr>
<tr>
<th align="center" valign="bottom">Dec</th>
<th align="center" valign="bottom">Hex</th>
</tr>
<tr>
<td align="center" valign="top" width="10%">0</td>
<td align="center" valign="top" width="10%">0</td>
<td align="left" valign="top" width="20%">BINARY(4)</td>
<td align="left" valign="top" width="60%">Length of trace information</td>
</tr>
<tr>
<td align="center" valign="top">4</td>
<td align="center" valign="top">4</td>
<td align="left" valign="top">CHAR(4)</td>
<td align="left" valign="top">LIC Log major code</td>
</tr>
<tr>
<td align="center" valign="top">8</td>
<td align="center" valign="top">8</td>
<td align="left" valign="top">CHAR(4)</td>
<td align="left" valign="top">LIC Log minor code</td>
</tr>
<tr>
<td align="center" valign="top">12</td>
<td align="center" valign="top">C</td>
<td align="left" valign="top">CHAR(8)</td>
<td align="left" valign="top">LIC Log identifier</td>
</tr>
<tr>
<td align="center" valign="top">20</td>
<td align="center" valign="top">14</td>
<td align="left" valign="top">BINARY(4)</td>
<td align="left" valign="top">Offset to comparison data</td>
</tr>
<tr>
<td align="center" valign="top">24</td>
<td align="center" valign="top">18</td>
<td align="left" valign="top">BINARY(4)</td>
<td align="left" valign="top">Length of comparison data</td>
</tr>
<tr>
<td align="center" valign="top">28</td>
<td align="center" valign="top">1C</td>
<td align="left" valign="top">CHAR(*)</td>
<td align="left" valign="top">LIC Log comparison data</td>
</tr>
</table>
<br>
<p>The format of the Comparison data is as follows if the Trace option setting
is *ON, *INTVAL or *WCHTIMO:</p>
<table border width="80%">
<tr>
<th align="center" valign="bottom" colspan="2">Offset</th>
<th align="left" valign="bottom" rowspan="2">Type</th>
<th align="left" valign="bottom" rowspan="2">Field</th>
</tr>
<tr>
<th align="center" valign="bottom">Dec</th>
<th align="center" valign="bottom">Hex</th>
</tr>
<tr>
<td align="center" valign="top" width="10%">0</td>
<td align="center" valign="top" width="10%">0</td>
<td align="left" valign="top" width="20%">BINARY(4)</td>
<td align="left" valign="top" width="60%">Length of trace information (always 4 at this
time)</td>
</tr>
</table>
</dd>
</dl>
<br>
<h3><a name="Header_9"></a>Field Descriptions</h3>
<p><strong>Length of trace information.&nbsp;</strong> The length of the
Comparison data parameter passed to the user-written exit program.</p>
<p><strong>Length of comparison data.&nbsp;</strong> The length of the user
specified text to be compared against the event data.</p>
<p><strong>LIC Log identifier.</strong> The LIC Log entry identifier of the
LIC Log that occurred.</p>
<p><strong>LIC Log major code.</strong> The major code of the LIC Log that
occurred.</p>
<p><strong>LIC Log minor code.</strong> The minor code of the LIC Log that
occurred.</p>
<p><strong>LIC Log comparison data.</strong> The user specified text string
used to compare against the entry data of the watched for log entry.</p>
<p><strong>Message ID.&nbsp;</strong> The identifier of the message that
occurred.</p>
<p><strong>Message comparison data.</strong> The user specified text string
used to compare against the entry data of the watched for message ID.</p>
<p><strong>Offset to comparison data.&nbsp;</strong> The offset to the field
that holds the comparison data.</p>
<br>
<h3>Related Information</h3>
<p>See the <a href="../cl/trctcpapp.htm">Trace TCP/IP Application</a> (TRCTCPAPP) command
for more information.</p>
<br>
<hr>
Exit program introduced: V5R3&nbsp;
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