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Symbian3/PDK/Source/GUID-092C18D4-A525-5562-9BF6-41435E400290.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 16 Jul 2010 17:23:46 +0100
changeset 12 80ef3a206772
parent 9 59758314f811
permissions -rw-r--r--
Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<?xml version="1.0" encoding="utf-8"?>
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- This component and the accompanying materials are made available under the terms of the License
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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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". -->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!-- Initial Contributors:
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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    Nokia Corporation - initial contribution.
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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Contributors:
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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-->
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<concept id="GUID-092C18D4-A525-5562-9BF6-41435E400290" xml:lang="en"><title>LibpThread Example - Using P.I.P.S OECORE </title><prolog><metadata><keywords/></metadata></prolog><conbody>
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<p>This example application shows, using a P.I.P.S. (P.I.P.S. Is POSIX
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on the Symbian platform) program, the use of the LibpThread library
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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to demonstrate simple multi-threading and synchronisation. </p>
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<p>The purpose is to create a basic multithreading example showing
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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the usage of the LibpThread APIs. This example also shows how multi-threading
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is used to achieve concurrency in tasks and sharing of resources. </p>
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80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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<section id="GUID-026FD8D6-6C4A-5958-B289-775D4AE1E756-GENID-1-12-1-14-1-1-5-1-3-1-11-1-7-1-2-3"><title>Download</title> <p>Click on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-84e8baf2-57f1-4255-aeb8-a6ed0ed2145e.zip" scope="external"> LibpThreadExample.zip</xref></p><p>Click: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-84e8baf2-57f1-4255-aeb8-a6ed0ed2145e.html" scope="peer">browse</xref> to view the example code. </p> </section>
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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<section id="GUID-7E7C4564-B10E-41F9-8A9D-D8A6C5E9C51C-GENID-1-12-1-14-1-1-5-1-3-1-11-1-7-1-2-4"><title>Description</title> <p>The following sections provide more information about the steps
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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that the example performs. </p> <p><b> Thread Synchronisation</b> </p> <p>The example creates three threads named ThreadOne, ThreadTwo
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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and ThreadThree. The threads write "One", "Two" and "Three" five times
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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in a text file. The text file, located in <filepath>epoc32\winscw\c\newfile.txt</filepath>, is used as a shared resource for all three threads. A mutex is
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used to ensure that first ThreadOne writes in the file, then ThreadTwo
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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and then ThreadThree. If the mutex is not used all the threads can
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simultaneously write in the file. This can be seen by commenting out <codeph>pthread_mutex_lock</codeph> and <codeph>pthread_mutex_unlock</codeph> in the code. </p> </section>
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<section id="GUID-236CB272-E196-4A61-B627-ACFFC4B37AA1"><title>Related
59758314f811 Week 23 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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APIs</title><p><xref href="GUID-94FEEC14-384E-364F-929F-0339FE559FB0.dita"><apiname>pthread_mutex_lock(pthread_mutex_t *)</apiname></xref> </p><p><xref href="GUID-E0AABD52-5A8F-3F49-A46D-5CE5BE975765.dita"><apiname>pthread_mutex_unlock(pthread_mutex_t *)</apiname></xref> </p><p><xref href="GUID-23868643-4C61-3661-843B-2D67C54CF163.dita"><apiname>pthread_join(pthread_t,void **)</apiname></xref></p><p><xref href="GUID-889CB456-6980-3B92-9350-0C6C8C9AC435.dita"><apiname>pthread_mutex_t</apiname></xref></p></section>
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80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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<section id="GUID-67A72761-1D92-46D1-B1C9-7455978BDE4E-GENID-1-12-1-14-1-1-5-1-3-1-11-1-7-1-2-6"><title>Build</title> <p>The Symbian build process describes how to build this example
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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application. </p> <p>The example builds an executable
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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called <filepath>LibpThreadExample.exe</filepath> in the standard
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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locations. </p> <p>To run the example, start <filepath>LibpThreadExample.exe</filepath> from the file system or from your IDE. After launching the executable,
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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depending on the emulator you are using, you may need to navigate
80ef3a206772 Week 28 contribution of PDK documentation content. See release notes for details. Fixes bugs Bug 1897, Bug 344, Bug 2681, Bug 463, Bug 1522.
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away from the application launcher or shell screen to view the console. </p> </section>
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25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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</conbody></concept>
FCL/sftools/depl/docscontent