163 lines
4.9 KiB
HTML
163 lines
4.9 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>_SETSPP()--Set Space Pointer for i5/OS PASE</title>
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<!-- Begin Header Records -->
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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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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!-- Created by wrmadden on 03 Apr 2003 -->
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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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<!-- Java sync-link -->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>_SETSPPM()--Set Multiple Space Pointers for i5/OS PASE</h2>
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<div class="box" style="width: 70%;">
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<br>
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Syntax
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<pre>
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#include <as400_protos.h>
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void _SETSPPM(ILEpointer *const *<em>target</em>);
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</pre>
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Library: Standard C Library (libc.a)<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><strong>Note:</strong> This function can only be used in an i5/OS PASE
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program. See <a href="../rzalf/rzalfintro.htm">i5/OS PASE</a> for more
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information about creating i5/OS PASE programs.</p>
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<p>The _SETSPPM() function sets multiple tagged space pointers to the
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teraspace equivalents of i5/OS PASE memory addresses.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>target</strong></dt>
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<dd>(Input/Output) Pointer to a list of pointers (of type ILEpointer), with a null pointer marking the end of the list.
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_SETSPPM updates each ILEpointer with a tagged space pointer to the teraspace equivalent address of the i5/OS PASE memory address input through the <em>addr</em> field of the ILEpointer.
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</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p><strong>_SETSPPM</strong> requires no authority.</p>
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<br>
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<h3>Return Value</h3>
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<p><strong>_SETSPPM</strong> returns no function result.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>Any error is reported with an i5/OS exception message that the system
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converts to an i5/OS PASE signal. See <a href="pase_signals.htm">i5/OS PASE
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Signal Handling</a> for information about handling i5/OS exceptions.</p>
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<br>
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<h3>Usage Notes</h3>
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<ol>
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<li><strong>_SETSPPM</strong> returns a 16-byte null ILEpointer if the i5/OS PASE memory address is null (zero) or points to a location that cannot contain i5/OS PASE memory.
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i5/OS PASE memory is allocated from teraspace, but teraspace has a limited capacity smaller than
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64-bits, so i5/OS PASE can only provide addressability to a subset of a 64-bit address space.<br>
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<br>
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</li>
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<li><strong>_SETSPPM</strong> returns space pointers regardless
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of whether there is currently any memory at the i5/OS PASE addresses.<br>
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<br>
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</li>
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<li>A tagged space pointer to a teraspace location must only be used by the
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process that owns the teraspace, although the current system implementation
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does not reliably enforce this restriction. Applications must not assume that a
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process can reference memory in the teraspace of another process because future
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system implementations may make this impossible. Tagged space pointers to
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teraspace memory that were either inherited by the child process of a fork or
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stored in shared memory by another process should be considered unusable.<br>
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<br>
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</li>
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<li>Tagged (16-byte) pointers must not be stored in memory mapped from a
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bytestream file (by either mmap or shmat) although the current system
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implementation does not reliably enforce this restriction. Tagged pointers can
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be stored in shared memory objects (created by shmget and mapped by shmat), but
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a tagged space pointer to teraspace memory cannot be reliably used by a process
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other than the one that owns the teraspace.</li>
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</ol>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="pase__cvtspp.htm">_CVTSPP()--Convert Space Pointer for i5/OS
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PASE</a></li>
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<li><a href="pase__cvtts64.htm">_CVTTS64()--Convert Teraspace Address for i5/OS
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PASE</a></li>
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<li><a href="pase__getts64.htm">_GETTS64() and _GETTS64_SPP--Get Teraspace Address for i5/OS
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PASE</a></li>
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<li><a href="pase__getts64m.htm">_GETTS64M()--Get Multiple Teraspace Addresses for i5/OS
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PASE</a></li>
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<li><a href="pase__setspp.htm">_SETSPP() and _SETSPP_TS64()--Set Space Pointer for i5/OS
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PASE</a></li>
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</ul>
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<br>
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<hr>
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API introduced: V5R3
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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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"pase1.htm">i5/OS PASE APIs</a> | <a href="aplist.htm">APIs by category</a>
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</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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