52 lines
2.2 KiB
HTML
52 lines
2.2 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>Thread ID vs. Pthread Handle (pthread_t)</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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<!-- NETMG2 SCRIPT A converted by B2H R4.1 (346) (CMS) by HOLTJM at -->
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<!-- RCHVMW2 on 29 Jan 1999 at 10:01:37 -->
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<!--File Edited November 2001 -->
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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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<h2>Thread ID vs. Pthread Handle (pthread_t)</h2>
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<p>In many threads implementations, the pthread_t abstract type is implemented
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as an integer (4 byte) thread ID. In the iSeries implementation of Pthreads, the
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thread ID is a 64-bit integral value and the pthread_t is an abstraction
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(structure) that contains that value and others. This abstraction helps to
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allow the implementation to scale to thousands of threads in a process.</p>
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<p>Do not allow your program to rely on the internal structure or size of the
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pthread_t in a non-portable fashion, such as comparisons of thread IDs. For
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portable comparison, use the pthread_equal() API. This documentation
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occasionally refers to the pthread_t as a Pthread handle to try to prevent the
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misconception that it represents a single integer value.</p>
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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">
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<a href="rzah4mst.htm">Pthread APIs</a> |
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<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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