61 lines
4.0 KiB
HTML
61 lines
4.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Exit points" />
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<meta name="abstract" content="The i5/OS registration facility allows you to define exit points for functions in an application and to register programs that run at those exit points." />
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<meta name="description" content="The i5/OS registration facility allows you to define exit points for functions in an application and to register programs that run at those exit points." />
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<meta name="DC.Relation" scheme="URI" content="rzahwsafco.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzahwevaco.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzahwdbcco.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Exit points</title>
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</head>
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<body id="rzahwexi-exico"><a name="rzahwexi-exico"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Exit points</h1>
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<div><p>The <span class="keyword">i5/OS™</span> registration
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facility allows you to define exit points for functions in an application
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and to register programs that run at those exit points.</p>
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<div class="section"><p>Some <span class="keyword">i5/OS</span> services
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also support the registration facility for registering exit programs. They
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have predefined exit points that are registered when those services are installed.
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The registration facility itself is threadsafe. You can use it to specify
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attributes of thread safety and multithreaded job actions for exit program
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entries.</p>
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</div>
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<div class="section"><p>Without careful evaluation, however, you should not consider existing
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exit programs to be threadsafe, even though you can call exit programs in
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a multithreaded job. The same restrictions apply to exit programs as to any
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other code that runs in a multithreaded job. For example, only exit programs
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written using a threadsafe Integrated Language Environment<sup>®</sup> (ILE)
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language that can be made threadsafe.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahwsafco.htm" title="A function is threadsafe if you can start it simultaneously in multiple threads within the same process. A function is threadsafe if and only if all the functions it calls are also threadsafe.">Thread safety</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzahwevaco.htm" title="When writing a multithreaded application, you should evaluate all the parts of the application and all the services that it uses for thread safety.">Existing application evaluation</a></div>
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<div><a href="rzahwdbcco.htm" title="You should consider these items when using databases in multithreaded programs.">Database considerations for multithreaded programming</a></div>
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</div>
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</div>
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</body>
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</html>
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