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

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<title>Register Call Stack Entry Termination User Exit Procedure (CEERTX)
API</title>
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<h2>Register Call Stack Entry Termination User Exit Procedure (CEERTX) API</h2>
<div class="box" style="width: 60%;">
<br>
&nbsp;&nbsp;Required Parameter:<br>
<!-- iddvc RMBR -->
<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="30%">procedure</td>
<td align="left" valign="top" width="30%">Input</td>
<td align="left" valign="top" width="30%">RTX_ENTRY</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Omissible Parameter:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">2</td>
<td align="left" valign="top" width="30%">token</td>
<td align="left" valign="top" width="30%">Input</td>
<td align="left" valign="top" width="30%">POINTER</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">fc</td>
<td align="left" valign="top">Output</td>
<td align="left" valign="top">FEEDBACK</td>
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&nbsp;&nbsp;Service Program Name: QLEAWI<br>
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<br>
&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Threadsafe: Yes<br>
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<p>The Register Call Stack Entry Termination User Exit Procedure (CEERTX) API
registers a user-defined procedure that runs when the call stack entry for
which it is registered is ended by anything other than a return to the
caller.</p>
<!-- 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</h3>
<dl>
<dt><strong>procedure (input)</strong></dt>
<dd>An entry variable or constant for the procedure that is called if the call
stack entry is abnormally ended.</dd>
</dl>
<br>
<h3>Omissible Parameter</h3>
<dl>
<dt><strong>token (input)</strong></dt>
<dd>A pointer that is passed to <em>procedure</em>. If <em>token</em> is
omitted, a null pointer is passed to <em>procedure</em> when <em>procedure</em>
is called.<br>
<br>
</dd>
<dt><strong>fc (output)</strong></dt>
<dd>A 12-byte feedback code.</dd>
</dl>
<br>
<h3>Feedback Codes and Conditions</h3>
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<tr>
<td align="left" valign="top">CEE0000</td>
<td align="left" valign="top">The API completed successfully</td>
</tr>
<tr>
<td align="left" valign="top">Severity: 00</td>
<td align="left" valign="top">&nbsp;</td>
</tr>
<tr>
<td align="left" valign="top">CEE0256</td>
<td align="left" valign="top">Procedure already registered, registered
again</td>
</tr>
<tr>
<td align="left" valign="top">Severity: 10</td>
<td align="left" valign="top">&nbsp;</td>
</tr>
<tr>
<td align="left" valign="top">CEE0257</td>
<td align="left" valign="top">The procedure provided for &amp;1 is not
valid</td>
</tr>
<tr>
<td align="left" valign="top">Severity: 30</td>
<td align="left" valign="top">&nbsp;</td>
</tr>
<tr>
<td align="left" valign="top">CEE3103</td>
<td align="left" valign="top">Cannot allocate storage in &amp;1</td>
</tr>
<tr>
<td align="left" valign="top">Severity: 30</td>
<td align="left" valign="top">&nbsp;</td>
</tr>
<tr>
<td align="left" valign="top">CEE9902</td>
<td align="left" valign="top">Unexpected user error occurred in &amp;1</td>
</tr>
<tr>
<td align="left" valign="top">Severity: 30</td>
<td align="left" valign="top">&nbsp;</td>
</tr>
</table>
<br>
<h3>Usage Notes</h3>
<ul>
<li>
<p>Multiple user call stack entry termination user exit procedures can be
registered for each call stack entry.</p>
</li>
<li>
<p>Call stack entry termination user exit procedures run in first in/first out
(FIFO) order. If a procedure causes any of the following, the remaining
procedures are not run:</p>
<ul>
<li>
<p>The call to a call stack entry termination user exit procedure fails.</p>
</li>
<li>
<p>An exception is not handled.</p>
</li>
<li>
<p>Control has moved past the invocation of the call stack entry termination
user exit procedure. For example, the resume cursor has been moved, or an
out-of-scope jump, such as <em>longjmp()</em> in ILE C, has been used.</p>
</li>
</ul>
</li>
<li>
<p>The message CEE0257 occurs only if the pointer contained in the procedure
parameter is not a procedure pointer. This does not verify that a call through
that pointer will be successful. For example, the call may fail because the
activation group containing the procedure no longer exists.</p>
</li>
</ul>
<br>
<h3>Interface to the Call Stack Entry Termination User Exit Procedure</h3>
<p>The following is the interface to the call stack entry termination user exit
procedure registered by the CEERTX API. The procedure is coded as <strong>
termination_procedure</strong> with the following parameter.</p>
<br>
<div class="box" style="width: 60%;">
<br>
&nbsp;&nbsp;Required Parameter:<br>
<!-- iddvc RMBR -->
<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="30%">token</td>
<td align="left" valign="top" width="30">Input</td>
<td align="left" valign="top" width="30%">POINTER</td>
</tr>
</table>
<br>
</div>
<!-- Please NOTE: DO NOT DELETE THIS SECTION if this API has no authorities and locks. -->
<!-- Instead, use the commented out coding below to indicate NONE. -->
<h3>Authorities and Locks</h3>
<!-- Use this if there are no authorities and locks. -->
<p>None.</p>
<br>
<h3>Required Parameter</h3>
<dl>
<dt><strong>token (input)</strong></dt>
<dd>The user-supplied pointer passed on the call to CEERTX that registered the
call stack entry termination user exit procedure.</dd>
</dl>
<br>
<hr>
API introduced: V2R3
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