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Adaptation/GUID-DC8D3736-EDCF-54CB-A614-2AAC4664F1CA.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
changeset 15 307f4279f433
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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-DC8D3736-EDCF-54CB-A614-2AAC4664F1CA" xml:lang="en"><title>Kernel-Side Services</title><shortdesc>This section describes how device drivers can use the services
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that the Kernel provides. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>The section begins with a discussion of the APIs for fundamental types
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such as buffers and arrays. Kernel side programs cannot use all of the same
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APIs as user-side programs, so you need to be aware of these restrictions,
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and the alternative APIs provided by the Kernel. </p>
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<p>The guide then discusses a number of idioms for communicating between different
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threads and processes, including Publish and Subscribe, Kernel-side messages,
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shared chunks, and environment slots. </p>
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<p>Some more advanced programming issues are then discussed, including how
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to design a device driver to behave correctly in a demand paged OS environment,
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in which client programs may not be continuously in memory, and how to integrate
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a device driver with system wide power resource management. </p>
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<p>The section ends with a discussion of how Kernel APIs encourage safe programming
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with the use of precondition checks. </p>
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</conbody></concept>
MCL/sftools/depl/docscontent