Symbian3/PDK/Source/GUID-D542B24D-5A17-516C-85B0-66A5E8A97946.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 18:02:22 +0000
changeset 3 46218c8b8afa
parent 1 25a17d01db0c
child 5 f345bda72bc4
permissions -rw-r--r--
week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-D542B24D-5A17-516C-85B0-66A5E8A97946" xml:lang="en"><title>Exception
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handling</title><shortdesc>Description of the functions related to Exception handling.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>When an exception occurs, such as dividing by zero or an access violation,
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what happens depends on whether the thread has an exception handler. If a
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thread has no exception handler or has an exception handler which will not
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handle the type of exception identified by the <xref href="GUID-7AF19D5F-E146-3BFA-9741-58B12D4E85A8.dita"><apiname>TExcType</apiname></xref> enumeration,
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then the exception is passed to the Kernel for handling. The default action
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is to panic the offending thread. </p>
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<p>If a thread has an exception handler, then the handler is executed in the
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context of the thread on which the exception is raised; control returns to
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the point of exception. If a thread calls <codeph>RaiseException()</codeph> and
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there is no handler for that type of exception, then a <codeph>KERN-EXEC 3</codeph> panic
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is raised. </p>
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<p>The following functions are involved in exception handling: </p>
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<ul>
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<li id="GUID-4A9F7B75-D1EF-5558-A24C-8BB7F31C12DD"><p> <xref href="GUID-C197C9A7-EA05-3F24-9854-542E984C612D.dita#GUID-C197C9A7-EA05-3F24-9854-542E984C612D/GUID-E11E87FD-AFA4-353F-887B-EF36154E4B4E"><apiname>User::ExceptionHandler()</apiname></xref>  </p> </li>
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<li id="GUID-BCC7FD2E-BEC7-5397-9E24-D9BBBDC00FBE"><p> <xref href="GUID-C197C9A7-EA05-3F24-9854-542E984C612D.dita#GUID-C197C9A7-EA05-3F24-9854-542E984C612D/GUID-FDB3FF0D-705D-3EFE-9666-F26F7E390D54"><apiname>User::SetExceptionHandler()</apiname></xref>  </p> </li>
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<li id="GUID-3C307BB1-D42D-5227-986A-4DBB235AC2FA"><p> <xref href="GUID-C197C9A7-EA05-3F24-9854-542E984C612D.dita#GUID-C197C9A7-EA05-3F24-9854-542E984C612D/GUID-77B2CCE3-B8FB-331A-9E61-15B2040CEC70"><apiname>User::ModifyExceptionMask()</apiname></xref>  </p> </li>
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<li id="GUID-A42D397F-8D73-5A9D-98BE-9F7668A0C148"><p> <xref href="GUID-C197C9A7-EA05-3F24-9854-542E984C612D.dita#GUID-C197C9A7-EA05-3F24-9854-542E984C612D/GUID-6AB971F1-EE72-38E9-AA4A-9E0D8FACD4FE"><apiname>User::RaiseException()</apiname></xref>  </p> </li>
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<li id="GUID-02647535-1F99-557D-AEC9-B3687799E2C6"><p> <xref href="GUID-C197C9A7-EA05-3F24-9854-542E984C612D.dita#GUID-C197C9A7-EA05-3F24-9854-542E984C612D/GUID-3016380F-1101-395E-AEC8-1A1BA8DF3914"><apiname>User::IsExceptionHandled()</apiname></xref>  </p> </li>
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</ul>
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</conbody></concept>