Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/producer_8cpp_source.html
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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>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// Contains the definition of member functions of the CProducer class.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="producer_8h.html">producer.h</a>"</span>
<a name="l00024"></a>00024
<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)
<a name="l00032"></a>00032 {
<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>;
<a name="l00034"></a>00034 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00035"></a>00035 <span class="keyword">self</span>->ConstructL(aConsole,aTokens);
<a name="l00036"></a>00036 CleanupStack::Pop(<span class="keyword">self</span>);
<a name="l00037"></a>00037 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039
<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)
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 iConsole = aConsole;
<a name="l00054"></a>00054 iQueue = aTokens;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// Create an object of the CPeriodic class.</span>
<a name="l00057"></a>00057 iPeriodicProd = <a class="code" href="class_c_producer.html#a3897c9436f1aae1654b3ae1c5a4b6673">CPeriodic::NewL</a>(CActive::EPriorityUserInput);
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="comment">// Create the producer thread.</span>
<a name="l00060"></a>00060 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KProducer,<span class="stringliteral">"ProducerThread"</span>);
<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));
<a name="l00062"></a>00062 iProdThread.SetPriority(EPriorityMore);
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">// The producer thread invokes the InsertFunction() function every two seconds.</span>
<a name="l00065"></a>00065 <span class="comment">// Associate InsertFunction() as the call back function for the iPeriodicCons object.</span>
<a name="l00066"></a>00066 iPeriodicProd->Start(0,3000000,TCallBack(<a class="code" href="class_c_producer.html#a2a8f3ef760142c8e424936df25c167d3">InsertFunction</a>,<span class="keyword">this</span>));
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00072"></a>00072 CProducer::CProducer()
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<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>()
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 RArray<TInt> array;
<a name="l00082"></a>00082 <span class="comment">// Initialize the array.</span>
<a name="l00083"></a>00083 <span class="comment">// The array reflects the contents of the CQueue queue.</span>
<a name="l00084"></a>00084 iQueue-><a class="code" href="class_c_queue.html#ab4d7758aee550b3f77a800959979e9fd">GetTokens</a>(array);
<a name="l00085"></a>00085 <span class="comment">// Print the array.</span>
<a name="l00086"></a>00086 iConsole->Printf(KNewLine);
<a name="l00087"></a>00087 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextQueue,<span class="stringliteral">"Queue Contents:\n[ "</span>);
<a name="l00088"></a>00088 iConsole->Printf(KTextQueue);
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextIntFormat,<span class="stringliteral">"%d "</span>);
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordflow">for</span>(TInt ix = 0 ; ix < array.Count() ; ix++)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 iConsole->Printf(KTextIntFormat,array[ix]);
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTextQueueEnd,<span class="stringliteral">"]"</span>);
<a name="l00098"></a>00098 iConsole->Printf(KTextQueueEnd);
<a name="l00099"></a>00099 iConsole->Printf(KNewLine);
<a name="l00100"></a>00100 iConsole->Printf(KNewLine);
<a name="l00101"></a>00101 array.Close();
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103
<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)
<a name="l00110"></a>00110 {
<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>
<a name="l00112"></a>00112 <span class="keywordflow">while</span>(<span class="keyword">true</span>)
<a name="l00113"></a>00113 {
<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;
<a name="l00115"></a>00115 __ASSERT_ALWAYS(ptr,User::Panic(KTxtPanic,-1));
<a name="l00116"></a>00116 <span class="comment">// Insert a token into the queue.</span>
<a name="l00117"></a>00117 ptr-><a class="code" href="class_c_queue.html#acf8845b17955c6cf4e6b779630aa7f50">Insert</a>();
<a name="l00118"></a>00118 <span class="comment">// Suspend the thread.</span>
<a name="l00119"></a>00119 RThread().Suspend();
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 <span class="keywordflow">return</span> KErrNone;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123
<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>()
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 <span class="comment">// Call the RThread::Resume() function on the producer thread.</span>
<a name="l00130"></a>00130 <span class="comment">// Control goes to the CProducer::ProdThreadFunc() function after this statement.</span>
<a name="l00131"></a>00131 iProdThread.Resume();
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<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>()
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 <span class="comment">// Call the CQueue::Insert() function.</span>
<a name="l00140"></a>00140 iQueue-><a class="code" href="class_c_queue.html#acf8845b17955c6cf4e6b779630aa7f50">Insert</a>();
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<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>()
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 iProdThread.Kill(KErrCancel);
<a name="l00149"></a>00149 <span class="keyword">delete</span> iPeriodicProd;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a>00152
<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)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <a class="code" href="class_c_producer.html">CProducer</a>* ptr = <span class="keyword">static_cast<</span><a class="code" href="class_c_producer.html">CProducer</a>*<span class="keyword">></span> (aPtr);
<a name="l00161"></a>00161 __ASSERT_ALWAYS(ptr,User::Panic(KTxtPanic,-1));
<a name="l00162"></a>00162 <span class="comment">// Invoke the RThread::Resume() function on the producer thread repeatedly.</span>
<a name="l00163"></a>00163 ptr-><a class="code" href="class_c_producer.html#abcfcc99dcdc64e03c08243375822dcf0">ResumeProd</a>();
<a name="l00164"></a>00164 <span class="keywordflow">return</span> KErrNone;
<a name="l00165"></a>00165 }
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