61 lines
2.5 KiB
HTML
61 lines
2.5 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>Mutexes can be named to aid in application debug</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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<!-- Change History: -->
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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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<!--End Header Records -->
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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>Mutexes can be named to aid in application debug</h2>
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<p>The i5/OS threads support of mutexes allows the application to name
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mutexes. Named mutexes can be used to aid in problem determination. The
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performance and behavioral characteristics of named mutexes are identicle to
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normal mutexes.</p>
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<p>When an application is using mutexes and has deadlocked, you may be able to
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determine which mutexes are being used by the application more easily if the
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mutexes being used are named.</p>
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<p>You can use the <strong>DSPJOB</strong> CL command to help debug the
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application. From <strong>DSPJOB</strong>, choose option <strong>19 - Display
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mutexes, if active</strong> or option <strong>20 - Display threads, if
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active</strong> to view the mutexes and threads being used by the
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application.</p>
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<p>See <a href="users_56.htm">pthread_mutexattr_setname_np()--Set Name in Mutex
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Attributes Object</a> and <a href="users_51.htm">
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pthread_mutexattr_getname_np()--Get Name from Mutex Attributes Object</a> if
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you would like to use named mutexes in your application.</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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