69 lines
2.7 KiB
HTML
69 lines
2.7 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>Interprocess Communication (IPC) APIs</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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<!-- UNIX3 SCRIPT A converted by B2H R4.1 (346) (CMS) by V2DCIJB at -->
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<!-- RCHVMW2 on 1 Jun 1999 at 16:14:49 -->
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<!-- File restructured for V5R2 -->
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<!-- 050119 JETAYLOR repurposed for V5R4 -->
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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>Interprocess Communication (IPC) APIs</h2>
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<p>Interprocess communication (IPC) on i5/OS<SUP>(R)</SUP> is made up of five services
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divided into the two categories of identifier-based services and pointer-based
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services. The identifier-based IPC services consist of message queues,
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semaphore sets, and shared memory. The pointer-based services consist of
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unnamed and named semaphores. The basic purpose of these services is to provide
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i5/OS processes and threads with a way to communicate with each other through
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a set of standard APIs. These functions are based on the definitions in the
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Single UNIX<SUP>(R)</SUP> Specification.</p>
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<p>The Interprocess Communication APIs are divided into the following categories:</p>
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<ul>
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<li><a href="unix3a.htm">Identifier Based Services</a><br><br></li>
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<li><a href="unix3b.htm">Pointer Based Services (Named and
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Unnamed Semaphores)</a><br><br></li>
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<li><a href="unix3c.htm">IPC Object Management</a>
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</ul>
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<p><strong>Note:</strong> These functions use header (include) files from the
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library QSYSINC, which is optionally installable. Make sure QSYSINC is
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installed on your system before using any of the functions. See <a href=
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"unix13.htm">Header Files for UNIX-Type Functions</a> for the file and member
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name of each header file.</p>
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<br>
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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>
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</center>
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</body>
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</html>
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