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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/producer_8cpp_source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 16:16:55 +0100
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/Base/IPC/condvar/condvarlocal/src/producer.cpp Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/Base/IPC/condvar/condvarlocal/src/producer.cpp</h1><a href="producer_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
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<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
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<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
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<a name="l00004"></a>00004 <span class="comment">// under the terms of &quot;Eclipse Public License v1.0&quot;</span>
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<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
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<a name="l00006"></a>00006 <span class="comment">// at the URL &quot;http://www.eclipse.org/legal/epl-v10.html&quot;.</span>
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<a name="l00007"></a>00007 <span class="comment">//</span>
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<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
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<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
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<a name="l00010"></a>00010 <span class="comment">//</span>
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<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
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<a name="l00012"></a>00012 <span class="comment">//</span>
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<a name="l00013"></a>00013 <span class="comment">// Description:</span>
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<a name="l00014"></a>00014 <span class="comment">// Contains the definition of member functions of the CProducer class.</span>
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<a name="l00015"></a>00015 <span class="comment">//</span>
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<a name="l00016"></a>00016
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<a name="l00017"></a>00017
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<a name="l00018"></a>00018
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<a name="l00023"></a>00023 <span class="preprocessor">#include &quot;<a class="code" href="producer_8h.html">producer.h</a>&quot;</span>
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<a name="l00024"></a>00024
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<a name="l00031"></a><a class="code" href="class_c_producer.html#a3897c9436f1aae1654b3ae1c5a4b6673">00031</a> <a class="code" href="class_c_producer.html">CProducer</a>* <a class="code" href="class_c_producer.html#a3897c9436f1aae1654b3ae1c5a4b6673">CProducer::NewL</a>(CConsoleBase* aConsole,<a class="code" href="class_c_queue.html">CQueue</a>* aTokens)
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<a name="l00032"></a>00032         {
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<a name="l00033"></a>00033         <a class="code" href="class_c_producer.html">CProducer</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave)<a class="code" href="class_c_producer.html">CProducer</a>;
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<a name="l00034"></a>00034         CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00035"></a>00035         <span class="keyword">self</span>-&gt;ConstructL(aConsole,aTokens);
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<a name="l00036"></a>00036         CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00037"></a>00037         <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00038"></a>00038         }
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<a name="l00039"></a>00039
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<a name="l00051"></a><a class="code" href="class_c_producer.html#a0040101a0f8608387a61d40dcd1df1e1">00051</a> <span class="keywordtype">void</span> <a class="code" href="class_c_producer.html#a0040101a0f8608387a61d40dcd1df1e1">CProducer::ConstructL</a>(CConsoleBase* aConsole,<a class="code" href="class_c_queue.html">CQueue</a>* aTokens)
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<a name="l00052"></a>00052         {
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<a name="l00053"></a>00053         iConsole = aConsole;
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<a name="l00054"></a>00054         iQueue = aTokens;
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056         <span class="comment">// Create an object of the CPeriodic class.</span>
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<a name="l00057"></a>00057         iPeriodicProd = <a class="code" href="class_c_producer.html#a3897c9436f1aae1654b3ae1c5a4b6673">CPeriodic::NewL</a>(CActive::EPriorityUserInput);
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<a name="l00058"></a>00058
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<a name="l00059"></a>00059         <span class="comment">// Create the producer thread.</span>
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<a name="l00060"></a>00060         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KProducer,<span class="stringliteral">&quot;ProducerThread&quot;</span>);
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<a name="l00061"></a>00061         User::LeaveIfError(iProdThread.Create(KProducer,<a class="code" href="class_c_producer.html#a1dc386d260d55e131f450a61553a49c7">ProdThreadFunc</a>,KDefaultStackSize,KMinHeapSize,256*KMinHeapSize,iQueue,EOwnerThread));
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<a name="l00062"></a>00062         iProdThread.SetPriority(EPriorityMore);
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064         <span class="comment">// The producer thread invokes the InsertFunction() function every two seconds.</span>
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<a name="l00065"></a>00065         <span class="comment">// Associate InsertFunction() as the call back function for the iPeriodicCons object.</span>
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<a name="l00066"></a>00066         iPeriodicProd-&gt;Start(0,3000000,TCallBack(<a class="code" href="class_c_producer.html#a2a8f3ef760142c8e424936df25c167d3">InsertFunction</a>,<span class="keyword">this</span>));
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<a name="l00067"></a>00067         }
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<a name="l00068"></a>00068
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<a name="l00072"></a>00072 CProducer::CProducer()
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<a name="l00073"></a>00073         {
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<a name="l00074"></a>00074         }
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<a name="l00075"></a>00075
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<a name="l00079"></a><a class="code" href="class_c_producer.html#a18ffcf23a5cb4d45b6e4ed9399b4c026">00079</a> <span class="keywordtype">void</span> <a class="code" href="class_c_producer.html#a18ffcf23a5cb4d45b6e4ed9399b4c026">CProducer::Display</a>()
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<a name="l00080"></a>00080         {
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<a name="l00081"></a>00081         RArray&lt;TInt&gt; array;
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<a name="l00082"></a>00082         <span class="comment">// Initialize the array.</span>
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<a name="l00083"></a>00083         <span class="comment">// The array reflects the contents of the CQueue queue.</span>
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<a name="l00084"></a>00084         iQueue-&gt;<a class="code" href="class_c_queue.html#ab4d7758aee550b3f77a800959979e9fd">GetTokens</a>(array);
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<a name="l00085"></a>00085         <span class="comment">// Print the array.</span>
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<a name="l00086"></a>00086         iConsole-&gt;Printf(KNewLine);
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<a name="l00087"></a>00087         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextQueue,<span class="stringliteral">&quot;Queue Contents:\n[  &quot;</span>);
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<a name="l00088"></a>00088         iConsole-&gt;Printf(KTextQueue);
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<a name="l00089"></a>00089
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<a name="l00090"></a>00090         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextIntFormat,<span class="stringliteral">&quot;%d  &quot;</span>);
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<a name="l00091"></a>00091
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<a name="l00092"></a>00092         <span class="keywordflow">for</span>(TInt ix = 0 ; ix &lt; array.Count() ; ix++)
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<a name="l00093"></a>00093                 {
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<a name="l00094"></a>00094                 iConsole-&gt;Printf(KTextIntFormat,array[ix]);
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<a name="l00095"></a>00095                 }
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<a name="l00096"></a>00096
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<a name="l00097"></a>00097         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextQueueEnd,<span class="stringliteral">&quot;]&quot;</span>);
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<a name="l00098"></a>00098         iConsole-&gt;Printf(KTextQueueEnd);
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<a name="l00099"></a>00099         iConsole-&gt;Printf(KNewLine);
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<a name="l00100"></a>00100         iConsole-&gt;Printf(KNewLine);
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<a name="l00101"></a>00101         array.Close();
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<a name="l00102"></a>00102         }
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<a name="l00103"></a>00103
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<a name="l00109"></a><a class="code" href="class_c_producer.html#a1dc386d260d55e131f450a61553a49c7">00109</a> TInt <a class="code" href="class_c_producer.html#a1dc386d260d55e131f450a61553a49c7">CProducer::ProdThreadFunc</a>(TAny* aPtr)
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<a name="l00110"></a>00110         {
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<a name="l00111"></a>00111         <span class="comment">// The while loop mechanism ensures that the thread performs the CQueue::Insert() operation each time RThread::Resume() is invoked on the thread handle.</span>
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<a name="l00112"></a>00112         <span class="keywordflow">while</span>(<span class="keyword">true</span>)
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<a name="l00113"></a>00113                 {
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<a name="l00114"></a>00114                 <a class="code" href="class_c_queue.html">CQueue</a>* ptr = (<a class="code" href="class_c_queue.html">CQueue</a>*)aPtr;
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<a name="l00115"></a>00115                 __ASSERT_ALWAYS(ptr,User::Panic(KTxtPanic,-1));
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<a name="l00116"></a>00116                 <span class="comment">// Insert a token into the queue.</span>
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<a name="l00117"></a>00117                 ptr-&gt;<a class="code" href="class_c_queue.html#acf8845b17955c6cf4e6b779630aa7f50">Insert</a>();
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<a name="l00118"></a>00118                 <span class="comment">// Suspend the thread.</span>
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<a name="l00119"></a>00119                 RThread().Suspend();
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<a name="l00120"></a>00120                 }
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<a name="l00121"></a>00121         <span class="keywordflow">return</span> KErrNone;
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<a name="l00122"></a>00122         }
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<a name="l00123"></a>00123
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<a name="l00127"></a><a class="code" href="class_c_producer.html#abcfcc99dcdc64e03c08243375822dcf0">00127</a> <span class="keywordtype">void</span> <a class="code" href="class_c_producer.html#abcfcc99dcdc64e03c08243375822dcf0">CProducer::ResumeProd</a>()
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<a name="l00128"></a>00128         {
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<a name="l00129"></a>00129         <span class="comment">// Call the RThread::Resume() function on the producer thread.</span>
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<a name="l00130"></a>00130         <span class="comment">// Control goes to the CProducer::ProdThreadFunc() function after this statement.</span>
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<a name="l00131"></a>00131         iProdThread.Resume();
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<a name="l00132"></a>00132         }
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<a name="l00133"></a>00133
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<a name="l00137"></a><a class="code" href="class_c_producer.html#a0d0ebcf368ff02703286cfae62965e8f">00137</a> <span class="keywordtype">void</span> <a class="code" href="class_c_producer.html#a0d0ebcf368ff02703286cfae62965e8f">CProducer::Produce</a>()
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<a name="l00138"></a>00138         {
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<a name="l00139"></a>00139         <span class="comment">// Call the CQueue::Insert() function.</span>
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<a name="l00140"></a>00140         iQueue-&gt;<a class="code" href="class_c_queue.html#acf8845b17955c6cf4e6b779630aa7f50">Insert</a>();
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<a name="l00141"></a>00141         }
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<a name="l00142"></a>00142
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<a name="l00146"></a><a class="code" href="class_c_producer.html#a8edcde2babed9948f65057d75e6b3899">00146</a> <a class="code" href="class_c_producer.html#a8edcde2babed9948f65057d75e6b3899">CProducer::~CProducer</a>()
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<a name="l00147"></a>00147         {
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<a name="l00148"></a>00148         iProdThread.Kill(KErrCancel);
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<a name="l00149"></a>00149         <span class="keyword">delete</span> iPeriodicProd;
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<a name="l00150"></a>00150         }
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<a name="l00151"></a>00151
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<a name="l00152"></a>00152
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<a name="l00158"></a><a class="code" href="class_c_producer.html#a2a8f3ef760142c8e424936df25c167d3">00158</a> TInt <a class="code" href="class_c_producer.html#a2a8f3ef760142c8e424936df25c167d3">CProducer::InsertFunction</a>(TAny* aPtr)
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<a name="l00159"></a>00159         {
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<a name="l00160"></a>00160         <a class="code" href="class_c_producer.html">CProducer</a>* ptr = <span class="keyword">static_cast&lt;</span><a class="code" href="class_c_producer.html">CProducer</a>*<span class="keyword">&gt;</span> (aPtr);
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<a name="l00161"></a>00161         __ASSERT_ALWAYS(ptr,User::Panic(KTxtPanic,-1));
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<a name="l00162"></a>00162         <span class="comment">// Invoke the RThread::Resume() function on the producer thread repeatedly.</span>
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<a name="l00163"></a>00163         ptr-&gt;<a class="code" href="class_c_producer.html#abcfcc99dcdc64e03c08243375822dcf0">ResumeProd</a>();
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<a name="l00164"></a>00164         <span class="keywordflow">return</span> KErrNone;
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<a name="l00165"></a>00165         }
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
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