68 lines
3.2 KiB
HTML
68 lines
3.2 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>Signals 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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<!-- RCHVMW2 on 29 Jan 1999 at 10:01:37 -->
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<!--File Edited November 2001 -->
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<!-- 031112 JETAYLOR replaced API and/or Exit listings with -->
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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>Signals APIs</h2>
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<p>Signal APIs can be used to manipulate signals in a threaded process. Signals
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can be sent to individual threads, the signal mask of a thread can be changed.
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When a signal is sent to a thread, the actions associated with the signal (such
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as stopping, continuing or terminating) <strong>never</strong> affect only the
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thread, all signal actions are defined to affect the process. When a signal
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handler is called, it is called in the thread that the signal was delivered
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to.</p>
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<p>Using signals correctly in a multithreaded process can be difficult. The
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recommended way to handle signals in a multithreaded process is to mask off all
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signals in all threads, then use the signals sigwait() API in a single thread
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to wait for any signal to be delivered to the process.</p>
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<p>For information about the examples included with the APIs, see the <a href=
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"users_g3.htm">information on the API examples</a>.</p>
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<p>The Signals APIs are:</p>
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<!-- ***** NOTE ***** Do not manually update text or links in this section. -->
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<!-- Updates made in this section *will* be overlaid by automated tools -->
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<!-- Notify User Technologies of needed updates to be made in XML for API finder.-->
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<!--***************API BEGIN PASTE***************-->
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<ul>
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<li><A HREF="users_95.htm">pthread_kill()</A> (Send Signal to Thread) requests that the signal sig be delivered to the specified thread.</li>
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<li><A HREF="users_96.htm">pthread_sigmask()</A> (Set or Get Signal Mask) examines or modifies the signal blocking mask for the current thread.</li>
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<li><A HREF="users_97.htm">pthread_signal_to_cancel_np()</A> (Convert Signals to Cancel Requests) causes a pthread_cancel() to be delivered to the target thread when the first signal specified in set arrives.</li>
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</ul>
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<!--***************API END PASTE***************-->
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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="rzah4mst.htm">Pthread APIs</a> | <a
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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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