130 lines
3.3 KiB
HTML
130 lines
3.3 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>rapi_getfd()--Get descriptor to wait on</title>
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Begin Header Records -->
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<!-- Created by John Hall for V5R1-->
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<!-- Change history: -->
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<!-- 030522 LESMITH: D3255.1 public authority should be *EXCLUDE-->
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<!-- Edited by Kersten Feb 02 -->
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<!-- End Header Records -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<a name="Top_Of_Page"></a>
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<!--Java sync-link-->
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<h2>rapi_getfd()--Get descriptor to wait on</h2>
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<div class="box" style="width: 60%;">
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<br>
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Syntax<br>
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<pre>
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#include <rapi.h>
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int rapi_getfd( rapi_sid_t SessID)
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</pre>
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<br>
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Service program name: QSYS/QTOQRAPI<br>
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<!-- iddvc RMBR -->
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<br>
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Default public authority: *EXCLUDE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>rapi_getfd()</strong> API returns the file descriptor associated
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with a successful <strong>rapi_session()</strong> call. This descriptor is
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valid until <strong>rapi_release()</strong> has been called. When a read event
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is signaled on this file descriptor, the application should
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use<strong>rapi_dispatch()</strong> to call the RAPI message-handling routine
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to handle the event.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong><em>SessID</em></strong></dt>
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<dd>(Input) Required<br>
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The session ID returned by a successful rapi_session() call.</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>None.</p>
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<br>
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<h3>Return Value</h3>
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<p>Returns a valid file descriptor if the SessID is valid.</p>
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<p>Returns -1 if the SessID is not valid.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>None.</p>
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<br>
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<h3>Usage Notes</h3>
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<p>The returned file descriptor can be used to wait on a select() or poll()
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call; it also can be used to wait on a select() call for a response from an API
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request. When the response is received, the <strong>rapi_dispatch()</strong>
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API can be used to call the RAPI message-handling routine defined in the
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<strong>rapi_session()</strong> call.</p>
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<br>
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<h3>Related Information</h3>
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<p>For a description of the RSVP protocol, see RFC 2205 on the RFC Pages for <a
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href="http://www.ietf.org/rfc.html">The Internet Engineering Task
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Force</a>.<img src="www.gif" alt="Link outside Information Center"></p>
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<p>Complete documentation of the RAPI APIs can be found at <a href=
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"http://www.opengroup.org/publications/catalog/c809.htm">The Open
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Group</a>.<img src="www.gif" alt="Link outside Information Center"></p>
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<br>
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<hr>
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API introduced: V5R1
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a> </td>
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</tr>
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</table></center>
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</body>
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</html>
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