<?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-1EDE641E-EF8C-542D-A7B3-7C496D41EF3D" xml:lang="en"><title>Thread+
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and Process ID</title><shortdesc>Each thread and process is allocated an ID which is unique across+
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all threads and processes.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>+
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<p> The ID is allocated when the thread or process is created. The main motivation+
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for the ID is to provide assistance for debuggers; it provides an easy way+
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to identify threads and processes.</p>+
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<p>In general, applications and servers can use IDs for thread and process+
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identification or, indeed, for whatever purpose that suits them.</p>+
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<p>While a thread ID is a property of the thread, it can be retrieved from+
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the thread by calling <xref href="GUID-B0E661BC-4058-3256-B9C3-5A4FD52F6DE5.dita#GUID-B0E661BC-4058-3256-B9C3-5A4FD52F6DE5/GUID-4B001A02-9F18-376E-868E-A2BB69637ED5"><apiname>RThread::Id()</apiname></xref>. The ID is encapsulated+
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by a <codeph>TThreadId</codeph> object that is returned by the function.</p>+
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<p>The <codeph>TThreadId</codeph> class provides <codeph>==</codeph> and <codeph>!=</codeph> operators+
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for comparing two thread IDs.</p>+
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<p>The process ID is similar; it can be retrieved from the process by calling <xref href="GUID-9DD1EA2B-DC59-315C-8E9C-CE6D9461B695.dita#GUID-9DD1EA2B-DC59-315C-8E9C-CE6D9461B695/GUID-F35D5AF1-46CC-3F24-AFE6-4539EE470E3D"><apiname>RProcess::Id()</apiname></xref>,+
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and is encapsulated by a <codeph>TProcessId</codeph> object returned by the+
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function.</p>+
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</conbody></concept>+
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