Symbian3/SDK/Source/GUID-186B9876-2A08-5F23-BB49-49EC34C51507.dita
changeset 0 89d6a7a84779
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-186B9876-2A08-5F23-BB49-49EC34C51507.dita	Thu Jan 21 18:18:20 2010 +0000
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept xml:lang="en" id="GUID-186B9876-2A08-5F23-BB49-49EC34C51507"><title>Using Signals to Terminate Processes</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>A P.I.P.S. process can terminate another P.I.P.S process by sending a <codeph>SIGKILL</codeph> or a <codeph>SIGTERM</codeph> signal to it using <xref href="GUID-16DC4A9D-44BC-36E2-AB97-5E9E7521937D.dita"><apiname>kill()</apiname></xref> or <xref href="GUID-3C70BF0B-CD6E-3A30-A9E6-4CCF11D47EEC.dita"><apiname>sigqueue()</apiname></xref>. </p> <p> <codeph>SIGKILL</codeph> terminates a process without any notification. Typically it used by a parent process to manage its children, or by a system utility to terminate other applications. </p> <p> <b>Note:</b> Your process must have the <b>PowerMangement</b> capability to send a SIGKILL signal to another process. </p> <p> <codeph> SIGTERM</codeph> is a request for termination. The receiving process can choose to shutdown gracefully or ignore the request. The following example code demonstrates how you can handle a <codeph>SIGTERM</codeph> signal and shutdown a process: </p> <codeblock id="GUID-F07EC689-C3DD-51BF-BFA8-6A430D42814A" xml:space="preserve">#include &lt;signal.h&gt;
+#include &lt;stdio.h&gt;
+#include &lt;stdlib.h&gt;
+void sighandler(int signum)
+    {
+    if(signum == SIGTERM)
+        {
+        // Perform clean up
+        exit(-1);
+        }
+    else
+        printf(“Error: Unknown signal”);
+    }
+int main()
+    {
+    signal(SIGTERM,sighandler); // When SIGTERM arrives, invoke sighandler()
+    // program logic
+    return 0;
+    }</codeblock> </conbody><related-links><link href="GUID-66C1493D-5B85-558A-9A39-454E6EBA307B.dita"><linktext>Signal Emulation on Symbian
+                Platform</linktext> </link> <link href="GUID-E65D91AE-482F-5592-B83C-0F29126C2EFA.dita"><linktext>Using Signals to Handle Exceptions</linktext> </link> <link href="GUID-6CF8A41B-C2DD-5D57-A71D-6405CE08A06B.dita"><linktext>Using Signals to Handle Asynchronous
+                Events</linktext> </link> </related-links></concept>
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