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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/circularbuffer_8cpp_source.html
author Dominic Pinkman <dominic.pinkman@nokia.com>
Fri, 13 Aug 2010 16:47:46 +0100
changeset 14 578be2adaf3e
parent 6 43e37759235e
permissions -rw-r--r--
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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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/BufsAndStrings/circularbufferexample/circularbuffer.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/BufsAndStrings/circularbufferexample/circularbuffer.cpp</h1><a href="circularbuffer_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">// This example program demonstrates the circular buffer API.</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="l00022"></a>00022 <span class="preprocessor">#include &quot;<a class="code" href="circularbuffer_8h.html">circularbuffer.h</a>&quot;</span>
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<a name="l00023"></a>00023
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<a name="l00024"></a>00024 <span class="comment">// Literals.</span>
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<a name="l00025"></a>00025 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPressAKey, <span class="stringliteral">&quot;\n\tPress any key to continue....&quot;</span>);
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<a name="l00026"></a>00026 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConstruct,<span class="stringliteral">&quot;\n\n ****Construct****&quot;</span>);
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<a name="l00027"></a>00027 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAdd,<span class="stringliteral">&quot;\n ****Add objects****\n&quot;</span>);
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<a name="l00028"></a>00028 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KNumberOfObjects,<span class="stringliteral">&quot;\nNumber of objects in the circular buffer: %d\n&quot;</span>);
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<a name="l00029"></a>00029 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddFailed,<span class="stringliteral">&quot;\nElement cannot be added because the circular buffer is full\n&quot;</span>);
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<a name="l00030"></a>00030 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KRemove,<span class="stringliteral">&quot;\n ****Remove objects****\n&quot;</span>);
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032
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<a name="l00036"></a><a class="code" href="class_t_my_class.html#a0cd85e121a9381570a6e661822e7f328">00036</a> <a class="code" href="class_t_my_class.html#a0cd85e121a9381570a6e661822e7f328">TMyClass::TMyClass</a>(){};
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<a name="l00040"></a><a class="code" href="class_t_my_class.html#a3e3f5a602a8be6eca1be2e6bc9287145">00040</a> <a class="code" href="class_t_my_class.html#a0cd85e121a9381570a6e661822e7f328">TMyClass::TMyClass</a>(<span class="keyword">const</span> TDesC&amp; aDes)
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<a name="l00041"></a>00041         {
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<a name="l00042"></a>00042         iBuf = aDes;
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<a name="l00043"></a>00043         }
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<a name="l00048"></a><a class="code" href="class_t_my_class.html#a748ac22426e7695ccfb1af1dd88c96a9">00048</a> <span class="keyword">const</span> TDesC&amp; <a class="code" href="class_t_my_class.html#a748ac22426e7695ccfb1af1dd88c96a9">TMyClass::GetBuf</a>()
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<a name="l00049"></a>00049         {
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<a name="l00050"></a>00050         <span class="keywordflow">return</span> iBuf;
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<a name="l00051"></a>00051         }
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<a name="l00056"></a><a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">00056</a> <span class="keywordtype">void</span> <a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">TMyClass::SetBuf</a>(<span class="keyword">const</span> TDesC&amp; aDes)
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<a name="l00057"></a>00057         {
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<a name="l00058"></a>00058         iBuf = aDes;
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<a name="l00059"></a>00059         }
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<a name="l00060"></a>00060
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<a name="l00064"></a>00064 CCircularBufferExample::CCircularBufferExample()
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<a name="l00065"></a>00065         {
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<a name="l00066"></a>00066         }
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<a name="l00067"></a>00067
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<a name="l00071"></a>00071 <span class="keywordtype">void</span> CCircularBufferExample::ConstructL()
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<a name="l00072"></a>00072         {
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<a name="l00073"></a>00073         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTitle, <span class="stringliteral">&quot;Circular Buffer Example&quot;</span> );
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<a name="l00074"></a>00074         iConsole = <a class="code" href="class_c_circular_buffer_example.html#adb5aee8a165729ff3c4a87fb5fc69426">Console::NewL</a>(KTitle, TSize(KConsFullScreen, KConsFullScreen));
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<a name="l00075"></a>00075
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<a name="l00076"></a>00076         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KWelcome, <span class="stringliteral">&quot;\n   Welcome to the circular buffer example application&quot;</span>);
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<a name="l00077"></a>00077         iConsole-&gt;Printf(KWelcome);
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<a name="l00078"></a>00078
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<a name="l00079"></a>00079         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPressAKeyMsg, <span class="stringliteral">&quot;\n\n Press any key to step through the example\n&quot;</span>);
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<a name="l00080"></a>00080         iConsole-&gt;Printf(KPressAKeyMsg );
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<a name="l00081"></a>00081         iConsole-&gt;Getch();
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<a name="l00082"></a>00082         }
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<a name="l00083"></a>00083
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<a name="l00087"></a><a class="code" href="class_c_circular_buffer_example.html#a186681cb1a9f422e1e00ce27d9bab8d1">00087</a> <a class="code" href="class_c_circular_buffer_example.html#a186681cb1a9f422e1e00ce27d9bab8d1">CCircularBufferExample::~CCircularBufferExample</a>()
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<a name="l00088"></a>00088         {
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<a name="l00089"></a>00089         <span class="keyword">delete</span> iConsole;
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<a name="l00090"></a>00090         }
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<a name="l00091"></a>00091
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<a name="l00097"></a><a class="code" href="class_c_circular_buffer_example.html#adb5aee8a165729ff3c4a87fb5fc69426">00097</a> <a class="code" href="class_c_circular_buffer_example.html">CCircularBufferExample</a>* <a class="code" href="class_c_circular_buffer_example.html#adb5aee8a165729ff3c4a87fb5fc69426">CCircularBufferExample::NewL</a>()
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<a name="l00098"></a>00098         {
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<a name="l00099"></a>00099         <a class="code" href="class_c_circular_buffer_example.html">CCircularBufferExample</a>* <span class="keyword">self</span>=<span class="keyword">new</span>(ELeave)<a class="code" href="class_c_circular_buffer_example.html">CCircularBufferExample</a>();
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<a name="l00100"></a>00100         CleanupStack::PushL(<span class="keyword">self</span>);
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<a name="l00101"></a>00101         <span class="keyword">self</span>-&gt;ConstructL();
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<a name="l00102"></a>00102         CleanupStack::Pop(<span class="keyword">self</span>);
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<a name="l00103"></a>00103         <span class="keywordflow">return</span> <span class="keyword">self</span>;
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<a name="l00104"></a>00104         }
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<a name="l00108"></a><a class="code" href="class_c_circular_buffer_example.html#aa197a8d4f8585a4277c286e02dc1d1ce">00108</a> <span class="keywordtype">void</span> <a class="code" href="class_c_circular_buffer_example.html#aa197a8d4f8585a4277c286e02dc1d1ce">CCircularBufferExample::CircularBufferOfIntsL</a>()
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<a name="l00109"></a>00109         {
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<a name="l00110"></a>00110         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCircularBufferForInt,<span class="stringliteral">&quot;\n *****Circular buffer for integers*****&quot;</span>);
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<a name="l00111"></a>00111         iConsole-&gt;Printf(KCircularBufferForInt);
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<a name="l00112"></a>00112
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<a name="l00113"></a>00113         <span class="comment">// Creates a circular buffer containing integers.</span>
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    90
 
<a name="l00114"></a>00114         CCirBuffer* circularBuffer = <span class="keyword">new</span>(ELeave)CCirBuffer;
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    91
 
<a name="l00115"></a>00115         <span class="comment">// Push the circular buffer onto the cleanup stack.</span>
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    92
 
<a name="l00116"></a>00116         CleanupStack::PushL(circularBuffer);
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    93
 
<a name="l00117"></a>00117         <span class="keyword">const</span> TInt KMaxElements = 4;
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    94
 
<a name="l00118"></a>00118         <span class="comment">// Sets the maximum capacity of this circular buffer.</span>
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    95
 
<a name="l00119"></a>00119         circularBuffer-&gt;SetLengthL(KMaxElements);  <span class="comment">// Maximum capacity is KMaxElements.</span>
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diff changeset 
    96
 
<a name="l00120"></a>00120
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    97
 
<a name="l00121"></a>00121         iConsole-&gt;Printf(KConstruct);
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    98
 
<a name="l00122"></a>00122         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConstructCircularBuffer, <span class="stringliteral">&quot;\n Construction of circular buffer containing integers is successful&quot;</span>);
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    99
 
<a name="l00123"></a>00123         iConsole-&gt;Printf(KConstructCircularBuffer);
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diff changeset 
   100
 
<a name="l00124"></a>00124
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   101
 
<a name="l00125"></a>00125
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   102
 
<a name="l00126"></a>00126         iConsole-&gt;Printf(KAdd);
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diff changeset 
   103
 
<a name="l00127"></a>00127         TUint element[6]= {1, 2, 3, 4, 5, 6};
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   104
 
<a name="l00128"></a>00128         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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diff changeset 
   105
 
<a name="l00129"></a>00129
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   106
 
<a name="l00130"></a>00130         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddedElements,<span class="stringliteral">&quot;Added Element: %d\n&quot;</span>);
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   107
 
<a name="l00131"></a>00131         TInt result=circularBuffer-&gt;Put(element[0]); <span class="comment">// Add integers to the circular buffer.</span>
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   108
 
<a name="l00132"></a>00132         User::LeaveIfError(result);
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   109
 
<a name="l00133"></a>00133         iConsole-&gt;Printf(KAddedElements,element[0]);
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   110
 
<a name="l00134"></a>00134         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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   111
 
<a name="l00135"></a>00135
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   112
 
<a name="l00136"></a>00136         <span class="comment">// Add multiple integers to the circular buffer.</span>
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   113
 
<a name="l00137"></a>00137         TUint numberOfObjects= 3;
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   114
 
<a name="l00138"></a>00138         <span class="keywordflow">for</span>(TUint index=1;index&lt;=numberOfObjects; index++)
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   115
 
<a name="l00139"></a>00139                 {
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   116
 
<a name="l00140"></a>00140                 result= circularBuffer-&gt;Put(element[index]);
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   117
 
<a name="l00141"></a>00141                 User::LeaveIfError(result);
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   118
 
<a name="l00142"></a>00142                 <span class="comment">// Print the element added to the circular buffer.</span>
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   119
 
<a name="l00143"></a>00143                 iConsole-&gt;Printf(KAddedElements,element[index]);
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   120
 
<a name="l00144"></a>00144                 iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00145"></a>00145                 }
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   122
 
<a name="l00146"></a>00146
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   123
 
<a name="l00147"></a>00147         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddIntegersToCircularBuffer,<span class="stringliteral">&quot;\nAdding integers to circular buffer is successful&quot;</span>);
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<a name="l00148"></a>00148         iConsole-&gt;Printf(KAddIntegersToCircularBuffer);
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   125
 
<a name="l00149"></a>00149
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   126
 
<a name="l00150"></a>00150         iConsole-&gt;Printf(KPressAKey);
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   127
 
<a name="l00151"></a>00151         iConsole-&gt;Getch();
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   128
 
<a name="l00152"></a>00152
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   129
 
<a name="l00153"></a>00153         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTryingAddToCircularBuffer,<span class="stringliteral">&quot;\nTrying to add when buffer is full.&quot;</span>);
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   130
 
<a name="l00154"></a>00154         iConsole-&gt;Printf(KTryingAddToCircularBuffer);
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   131
 
<a name="l00155"></a>00155         result=circularBuffer-&gt;Put(element[4]);
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   132
 
<a name="l00156"></a>00156         ASSERT(result == KErrGeneral);
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   133
 
<a name="l00157"></a>00157         iConsole-&gt;Printf(KAddFailed);
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diff changeset 
   134
 
<a name="l00158"></a>00158
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   135
 
<a name="l00159"></a>00159         <span class="comment">// Remove integers from circular buffer.</span>
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   136
 
<a name="l00160"></a>00160         iConsole-&gt;Printf(KRemove);
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   137
 
<a name="l00161"></a>00161         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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diff changeset 
   138
 
<a name="l00162"></a>00162
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   139
 
<a name="l00163"></a>00163         result = circularBuffer-&gt;Get();
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   140
 
<a name="l00164"></a>00164         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KElementRemoved,<span class="stringliteral">&quot;Removed Element: %d\n&quot;</span>);
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   141
 
<a name="l00165"></a>00165         User::LeaveIfError(result);
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   142
 
<a name="l00166"></a>00166         ASSERT( (TUint) result == element[0]);
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   143
 
<a name="l00167"></a>00167         <span class="comment">// Print the element removed from the circular buffer.</span>
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   144
 
<a name="l00168"></a>00168         iConsole-&gt;Printf(KElementRemoved, result);
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   145
 
<a name="l00169"></a>00169         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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diff changeset 
   146
 
<a name="l00170"></a>00170
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   147
 
<a name="l00171"></a>00171
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   148
 
<a name="l00172"></a>00172         result = circularBuffer-&gt;Get();
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   149
 
<a name="l00173"></a>00173         User::LeaveIfError(result);
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   150
 
<a name="l00174"></a>00174         ASSERT((TUint)result == element[1]);
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   151
 
<a name="l00175"></a>00175         <span class="comment">// Print the element removed from the circular buffer.</span>
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   152
 
<a name="l00176"></a>00176         iConsole-&gt;Printf(KElementRemoved, result);
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   153
 
<a name="l00177"></a>00177         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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   154
 
<a name="l00178"></a>00178
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   155
 
<a name="l00179"></a>00179         <span class="comment">//Add remaining elements from array to buffer.</span>
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   156
 
<a name="l00180"></a>00180         <span class="keywordflow">for</span>(TUint index=4;index&lt;=5; index++)
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   157
 
<a name="l00181"></a>00181                 {
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   158
 
<a name="l00182"></a>00182                 result= circularBuffer-&gt;Put(element[index]);
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   159
 
<a name="l00183"></a>00183                 User::LeaveIfError(result);
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   160
 
<a name="l00184"></a>00184                 iConsole-&gt;Printf(KAddedElements,element[index]);
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   161
 
<a name="l00185"></a>00185                 iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00186"></a>00186                 }
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   163
 
<a name="l00187"></a>00187         iConsole-&gt;Printf(KPressAKey);
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   164
 
<a name="l00188"></a>00188         iConsole-&gt;Getch();
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   165
 
<a name="l00189"></a>00189         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KNewLine,<span class="stringliteral">&quot;\n&quot;</span>);
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   166
 
<a name="l00190"></a>00190         iConsole-&gt;Printf(KNewLine);
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   167
 
<a name="l00191"></a>00191         <span class="comment">// Remove multiple integers from the circular buffer.</span>
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diff changeset 
   168
 
<a name="l00192"></a>00192         <span class="keywordflow">for</span>(TUint index=2;index&lt;=5; index++)
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   169
 
<a name="l00193"></a>00193                 {
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   170
 
<a name="l00194"></a>00194                 result= circularBuffer-&gt;Get();<span class="comment">// Removed integer is element[index].</span>
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   171
 
<a name="l00195"></a>00195                 User::LeaveIfError(result);
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   172
 
<a name="l00196"></a>00196                 ASSERT((TUint)result == element[index]);
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   173
 
<a name="l00197"></a>00197                 <span class="comment">// Print the elements removed from the circular buffer.</span>
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   174
 
<a name="l00198"></a>00198                 iConsole-&gt;Printf(KElementRemoved,result);
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   175
 
<a name="l00199"></a>00199                 iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00200"></a>00200                 }
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<a name="l00201"></a>00201
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<a name="l00202"></a>00202         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KRemoveIntegersFromCircularBuffer,<span class="stringliteral">&quot;\nRemoving integers from the circular buffer is successful&quot;</span>);
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   179
 
<a name="l00203"></a>00203         iConsole-&gt;Printf(KRemoveIntegersFromCircularBuffer);
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   180
 
<a name="l00204"></a>00204         iConsole-&gt;Printf(KPressAKey);
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   181
 
<a name="l00205"></a>00205         iConsole-&gt;Getch();
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   182
 
<a name="l00206"></a>00206
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   183
 
<a name="l00207"></a>00207         <span class="comment">//Pop the circular buffer off the cleanup stack and destroy it.</span>
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   184
 
<a name="l00208"></a>00208         CleanupStack::PopAndDestroy(circularBuffer);
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<a name="l00209"></a>00209         }
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   186
 
<a name="l00210"></a>00210
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   187
 
<a name="l00215"></a><a class="code" href="class_c_circular_buffer_example.html#a11ec0dc3b7d29955b891a8675bfeb555">00215</a> <span class="keywordtype">void</span> <a class="code" href="class_c_circular_buffer_example.html#a11ec0dc3b7d29955b891a8675bfeb555">CCircularBufferExample::CircularBufferOfMyObjectsL</a>()
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   188
 
<a name="l00216"></a>00216         {
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   189
 
<a name="l00217"></a>00217         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCircularBufferForMyObject,<span class="stringliteral">&quot;\n *****Circular buffer of objects of user defined class TMyClass*****&quot;</span>);
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   190
 
<a name="l00218"></a>00218         iConsole-&gt;Printf(KCircularBufferForMyObject);
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<a name="l00219"></a>00219
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<a name="l00220"></a>00220         <span class="comment">// Create a circular buffer containing instances of TMyClass.</span>
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<a name="l00221"></a>00221         CCirBuf&lt;TMyClass&gt;* circularBuffer=<span class="keyword">new</span>(ELeave) CCirBuf&lt;TMyClass&gt;;
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<a name="l00222"></a>00222         <span class="comment">// Push the circular buffer onto the cleanup stack.</span>
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<a name="l00223"></a>00223         CleanupStack::PushL(circularBuffer);
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   196
 
<a name="l00224"></a>00224         <span class="comment">// Set the maximum capacity of this circular buffer.</span>
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<a name="l00225"></a>00225         <span class="keyword">const</span> TInt KMaxElements = 4;
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<a name="l00226"></a>00226         circularBuffer-&gt;SetLengthL(KMaxElements); <span class="comment">// Maximum capacity is KMaxElements.</span>
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<a name="l00227"></a>00227         iConsole-&gt;Printf(KConstruct);
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<a name="l00228"></a>00228
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<a name="l00229"></a>00229         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConstructCircularBufferForMyObject, <span class="stringliteral">&quot;\n Construction of circular buffer of user defined class is successful\n&quot;</span>);
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<a name="l00230"></a>00230         iConsole-&gt;Printf(KConstructCircularBufferForMyObject);
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   203
 
<a name="l00231"></a>00231
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   204
 
<a name="l00232"></a>00232         iConsole-&gt;Printf(KAdd);
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<a name="l00233"></a>00233         <span class="comment">// Creates an array of object of TMyClass.      </span>
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<a name="l00234"></a>00234         <a class="code" href="class_t_my_class.html">TMyClass</a> myObjectsToAdd[6];
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<a name="l00235"></a>00235
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<a name="l00236"></a>00236         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer1,<span class="stringliteral">&quot;first&quot;</span>);
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<a name="l00237"></a>00237         myObjectsToAdd[0].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer1);
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<a name="l00238"></a>00238         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer2,<span class="stringliteral">&quot;second&quot;</span>);
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<a name="l00239"></a>00239         myObjectsToAdd[1].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer2);
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<a name="l00240"></a>00240         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer3,<span class="stringliteral">&quot;third&quot;</span>);
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<a name="l00241"></a>00241         myObjectsToAdd[2].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer3);
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<a name="l00242"></a>00242         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer4,<span class="stringliteral">&quot;fourth&quot;</span>);
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   215
 
<a name="l00243"></a>00243         myObjectsToAdd[3].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer4);
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<a name="l00244"></a>00244         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer5,<span class="stringliteral">&quot;fifth&quot;</span>);
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<a name="l00245"></a>00245         myObjectsToAdd[4].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer5);
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<a name="l00246"></a>00246         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer6,<span class="stringliteral">&quot;sixth&quot;</span>);
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<a name="l00247"></a>00247         myObjectsToAdd[5].<a class="code" href="class_t_my_class.html#aca6375111d2a8a4f8ee068e2d882ff40">SetBuf</a>(KBuffer6);
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<a name="l00248"></a>00248
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<a name="l00249"></a>00249         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddedMyObjectElements,<span class="stringliteral">&quot;\nTMyClass object added is: &quot;</span>);
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<a name="l00250"></a>00250         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPrintMsgFormat,<span class="stringliteral">&quot; \&quot;%S\&quot; &quot;</span>);
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   223
 
<a name="l00251"></a>00251
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   224
 
<a name="l00252"></a>00252         TInt result= circularBuffer-&gt;Add(&amp;myObjectsToAdd[0]); <span class="comment">// Add a TMyClass to the circular buffer.</span>
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<a name="l00253"></a>00253         User::LeaveIfError(result);
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<a name="l00254"></a>00254         ASSERT(result==1);
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<a name="l00255"></a>00255         iConsole-&gt;Printf(KAddedMyObjectElements);
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<a name="l00256"></a>00256         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[0].GetBuf()));
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<a name="l00257"></a>00257         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00258"></a>00258
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   231
 
<a name="l00259"></a>00259
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   232
 
<a name="l00260"></a>00260         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddedMultipleMyObjectElements,<span class="stringliteral">&quot;\nTMyClass objects added are : &quot;</span>);
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<a name="l00261"></a>00261         <span class="comment">// Add multiple TMyClasss to the circular buffer</span>
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   234
 
<a name="l00262"></a>00262         result= circularBuffer-&gt;Add(&amp;myObjectsToAdd[1], 3); <span class="comment">// Add three objects to circular buffer.</span>
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   235
 
<a name="l00263"></a>00263         User::LeaveIfError(result);
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   236
 
<a name="l00264"></a>00264         ASSERT(result == 3); <span class="comment">//Making sure 3 objects are added.</span>
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<a name="l00265"></a>00265         iConsole-&gt;Printf(KAddedMultipleMyObjectElements);
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   238
 
<a name="l00266"></a>00266         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[1].GetBuf()));
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   239
 
<a name="l00267"></a>00267         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[2].GetBuf()));
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   240
 
<a name="l00268"></a>00268         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[3].GetBuf()));
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   241
 
<a name="l00269"></a>00269         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00270"></a>00270
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<a name="l00271"></a>00271         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddMyObjectsToCircularBuffer,<span class="stringliteral">&quot;\nAdding objects of TMyClasss to circular buffer is successful&quot;</span>);
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   244
 
<a name="l00272"></a>00272         iConsole-&gt;Printf(KAddMyObjectsToCircularBuffer);
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   245
 
<a name="l00273"></a>00273         iConsole-&gt;Printf(KPressAKey);
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   246
 
<a name="l00274"></a>00274         iConsole-&gt;Getch();
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   247
 
<a name="l00275"></a>00275
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   248
 
<a name="l00276"></a>00276
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   249
 
<a name="l00277"></a>00277         <span class="comment">//Array to hold removed elements from circular buffer.</span>
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   250
 
<a name="l00278"></a>00278         <a class="code" href="class_t_my_class.html">TMyClass</a> myRemovedObjects[6];
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   251
 
<a name="l00279"></a>00279         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KRemovedMultipleMyObjectElements,<span class="stringliteral">&quot;\nTMyClass objects removed are: &quot;</span>);
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   252
 
<a name="l00280"></a>00280
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   253
 
<a name="l00281"></a>00281         <span class="comment">// Remove multiple TMyClasss from the circular buffer.</span>
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   254
 
<a name="l00282"></a>00282         result= circularBuffer-&gt;Remove(&amp;myRemovedObjects[0],2);
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<a name="l00283"></a>00283         ASSERT(result == 2);
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   256
 
<a name="l00284"></a>00284         iConsole-&gt;Printf(KRemovedMultipleMyObjectElements);
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   257
 
<a name="l00285"></a>00285         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[0].GetBuf()));
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<a name="l00286"></a>00286         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[1].GetBuf()));
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<a name="l00287"></a>00287         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00288"></a>00288
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<a name="l00289"></a>00289         <span class="comment">// Add two elements to circular buffer</span>
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   262
 
<a name="l00290"></a>00290         result= circularBuffer-&gt;Add(&amp;myObjectsToAdd[4],2);
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<a name="l00291"></a>00291         User::LeaveIfError(result);
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   264
 
<a name="l00292"></a>00292         ASSERT(result == 2);
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<a name="l00293"></a>00293         iConsole-&gt;Printf(KAddedMultipleMyObjectElements);
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   266
 
<a name="l00294"></a>00294         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[4].GetBuf()));
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   267
 
<a name="l00295"></a>00295         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myObjectsToAdd[5].GetBuf()));
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<a name="l00296"></a>00296         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00297"></a>00297
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<a name="l00298"></a>00298         <span class="comment">// Remove multiple TMyClasss from the circular buffer.</span>
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<a name="l00299"></a>00299         result= circularBuffer-&gt;Remove(&amp;myRemovedObjects[2],4);
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<a name="l00300"></a>00300         ASSERT(result == 4);
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<a name="l00301"></a>00301         iConsole-&gt;Printf(KRemovedMultipleMyObjectElements);
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<a name="l00302"></a>00302         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[2].GetBuf()));
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<a name="l00303"></a>00303         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[3].GetBuf()));
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<a name="l00304"></a>00304         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[4].GetBuf()));
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<a name="l00305"></a>00305         iConsole-&gt;Printf(KPrintMsgFormat,&amp;(myRemovedObjects[5].GetBuf()));
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<a name="l00306"></a>00306         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00307"></a>00307
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<a name="l00308"></a>00308         <span class="keywordflow">for</span>(TInt index=0;index&lt;6;index++)
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<a name="l00309"></a>00309                 {
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<a name="l00310"></a>00310                 <span class="comment">// The removed objects are same as added ones and are in order.</span>
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<a name="l00311"></a>00311                 ASSERT(myRemovedObjects[index].GetBuf() == myObjectsToAdd[index].GetBuf());
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<a name="l00312"></a>00312                 }
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<a name="l00313"></a>00313
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<a name="l00314"></a>00314         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KRemoveMyObjectsFromCircularBuffer,<span class="stringliteral">&quot;\nRemoving TMyClass objects from circular buffer is successful&quot;</span>);
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<a name="l00315"></a>00315         iConsole-&gt;Printf(KRemoveMyObjectsFromCircularBuffer);
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<a name="l00316"></a>00316         iConsole-&gt;Printf(KPressAKey);
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<a name="l00317"></a>00317         iConsole-&gt;Getch();
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<a name="l00318"></a>00318
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<a name="l00319"></a>00319         <span class="comment">//Pop the circular buffer off the cleanup stack and destroy it.</span>
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<a name="l00320"></a>00320         CleanupStack::PopAndDestroy(circularBuffer);
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<a name="l00321"></a>00321         }
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   294
 
<a name="l00322"></a>00322
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<a name="l00326"></a><a class="code" href="class_c_circular_buffer_example.html#ac317019ee3a32d5dcef6a90e5a52913c">00326</a> <span class="keywordtype">void</span> <a class="code" href="class_c_circular_buffer_example.html#ac317019ee3a32d5dcef6a90e5a52913c">CCircularBufferExample::CircularBufferOfRClasssL</a>()
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<a name="l00327"></a>00327         {
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<a name="l00328"></a>00328         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KCircularBufferForRBuf,<span class="stringliteral">&quot;\n *****Circular buffer of R Class*****&quot;</span>);
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<a name="l00329"></a>00329         iConsole-&gt;Printf(KCircularBufferForRBuf);
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<a name="l00330"></a>00330         <span class="comment">// Creates a circular buffer containing RBuf.</span>
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<a name="l00331"></a>00331         CCirBuf&lt;RBuf&gt;* circularBuffer=<span class="keyword">new</span>(ELeave)CCirBuf&lt;RBuf&gt;;
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<a name="l00332"></a>00332         <span class="comment">// Push the circular buffer onto the cleanup stack.</span>
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<a name="l00333"></a>00333         CleanupStack::PushL(circularBuffer);
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   303
 
<a name="l00334"></a>00334
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   304
 
<a name="l00335"></a>00335         <span class="keyword">const</span> TInt KMaxElements = 2;
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<a name="l00336"></a>00336         <span class="comment">// Sets the maximum capacity of this circular buffer.</span>
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<a name="l00337"></a>00337         circularBuffer-&gt;SetLengthL(KMaxElements);<span class="comment">// max capacity is KMaxElements</span>
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   307
 
<a name="l00338"></a>00338         iConsole-&gt;Printf(KConstruct);
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<a name="l00339"></a>00339         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KConstructCircularBufferForRBuf, <span class="stringliteral">&quot;\n Construction of circular buffer of R Class is successful&quot;</span>);
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<a name="l00340"></a>00340         iConsole-&gt;Printf(KConstructCircularBufferForRBuf);
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   310
 
<a name="l00341"></a>00341
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   311
 
<a name="l00342"></a>00342         RBuf bufToAdd1;
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<a name="l00343"></a>00343         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer1,<span class="stringliteral">&quot;11111&quot;</span>);
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<a name="l00344"></a>00344         <span class="comment">// Create an buffer descriptor and assign KBuffer1 data to the descriptor.</span>
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<a name="l00345"></a>00345         bufToAdd1.CreateL(KBuffer1);
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<a name="l00346"></a>00346
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   316
 
<a name="l00347"></a>00347         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00348"></a>00348
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<a name="l00349"></a>00349         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddedElements,<span class="stringliteral">&quot;Added Element: &quot;</span>);
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   319
 
<a name="l00350"></a>00350         iConsole-&gt;Printf(KAdd);
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   320
 
<a name="l00351"></a>00351         TInt result=circularBuffer-&gt;Add(&amp;bufToAdd1); <span class="comment">// Add a Rbuf object to the circular buffer.</span>
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   321
 
<a name="l00352"></a>00352         User::LeaveIfError(result);
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   322
 
<a name="l00353"></a>00353         ASSERT(result == 1);
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   323
 
<a name="l00354"></a>00354         iConsole-&gt;Printf(KAddedElements);
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   324
 
<a name="l00355"></a>00355         iConsole-&gt;Printf(bufToAdd1);
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   325
 
<a name="l00356"></a>00356         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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diff changeset 
   326
 
<a name="l00357"></a>00357
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<a name="l00358"></a>00358         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KBuffer2,<span class="stringliteral">&quot;22222&quot;</span>);
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   328
 
<a name="l00359"></a>00359         RBuf bufToAdd2;
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<a name="l00360"></a>00360         <span class="comment">// Create an buffer descriptor and assign KBuffer2 data to the descriptor.</span>
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   330
 
<a name="l00361"></a>00361         bufToAdd2.CreateL(KBuffer2);
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   331
 
<a name="l00362"></a>00362
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   332
 
<a name="l00363"></a>00363         result=circularBuffer-&gt;Add(&amp;bufToAdd2); <span class="comment">// Add a Rbuf object to the circular buffer.</span>
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<a name="l00364"></a>00364         User::LeaveIfError(result);
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<a name="l00365"></a>00365         ASSERT(result == 1);
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   335
 
<a name="l00366"></a>00366         iConsole-&gt;Printf(KAddedElements);
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   336
 
<a name="l00367"></a>00367         iConsole-&gt;Printf(bufToAdd2);
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   337
 
<a name="l00368"></a>00368         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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<a name="l00369"></a>00369
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   339
 
<a name="l00370"></a>00370         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAddRBufferToCircularBuffer,<span class="stringliteral">&quot;\nAdding to circular buffer of R Class is successful\n&quot;</span>);
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   340
 
<a name="l00371"></a>00371         iConsole-&gt;Printf(KAddRBufferToCircularBuffer);
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diff changeset 
   341
 
<a name="l00372"></a>00372
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diff changeset 
   342
 
<a name="l00373"></a>00373         RBuf bufToRemove;
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   343
 
<a name="l00374"></a>00374         iConsole-&gt;Printf(KRemove);
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<a name="l00375"></a>00375         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KElementRemoved,<span class="stringliteral">&quot;Removed Element: &quot;</span>);
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   345
 
<a name="l00376"></a>00376
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   346
 
<a name="l00377"></a>00377         result=circularBuffer-&gt;Remove(&amp;bufToRemove); <span class="comment">//bufToRemove will point to bufToAdd1 location.</span>
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   347
 
<a name="l00378"></a>00378         ASSERT(result == 1);
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   348
 
<a name="l00379"></a>00379         iConsole-&gt;Printf(KElementRemoved);
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   349
 
<a name="l00380"></a>00380         iConsole-&gt;Printf(bufToRemove);
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   350
 
<a name="l00381"></a>00381         iConsole-&gt;Printf(KNumberOfObjects, circularBuffer-&gt;Count());
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   351
 
<a name="l00382"></a>00382
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   352
 
<a name="l00383"></a>00383
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   353
 
<a name="l00384"></a>00384         bufToAdd2.Close();
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   354
 
<a name="l00385"></a>00385         bufToRemove.Close();
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   355
 
<a name="l00386"></a>00386         CleanupStack::PopAndDestroy(circularBuffer);
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   356
 
<a name="l00387"></a>00387         <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPressAnyKeyToExit,<span class="stringliteral">&quot;\nPress any key to exit &quot;</span>);
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   357
 
<a name="l00388"></a>00388         iConsole-&gt;Printf(KPressAnyKeyToExit);
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   358
 
<a name="l00389"></a>00389         iConsole-&gt;Getch();
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   359
 
<a name="l00390"></a>00390         }
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diff changeset 
   360
 
<a name="l00391"></a>00391
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parents:
diff changeset 
   361
 
<a name="l00392"></a>00392
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   362
 
<a name="l00393"></a>00393 <span class="keywordtype">void</span> MainL()
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   363
 
<a name="l00394"></a>00394         {
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diff changeset 
   364
 
<a name="l00395"></a>00395         <a class="code" href="class_c_circular_buffer_example.html">CCircularBufferExample</a>* app= <a class="code" href="class_c_circular_buffer_example.html#adb5aee8a165729ff3c4a87fb5fc69426">CCircularBufferExample::NewL</a>();
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diff changeset 
   365
 
<a name="l00396"></a>00396         CleanupStack::PushL(app);
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diff changeset 
   366
 
<a name="l00397"></a>00397
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<a name="l00398"></a>00398         <span class="comment">// Circular buffer containing integers.</span>
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   368
 
<a name="l00399"></a>00399         app-&gt;<a class="code" href="class_c_circular_buffer_example.html#aa197a8d4f8585a4277c286e02dc1d1ce">CircularBufferOfIntsL</a>();
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   369
 
<a name="l00400"></a>00400
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<a name="l00401"></a>00401         <span class="comment">// Circular buffer containing TMyClasss.</span>
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   371
 
<a name="l00402"></a>00402         app-&gt;<a class="code" href="class_c_circular_buffer_example.html#a11ec0dc3b7d29955b891a8675bfeb555">CircularBufferOfMyObjectsL</a>();
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   372
 
<a name="l00403"></a>00403
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<a name="l00404"></a>00404         <span class="comment">// Circular buffer containing RBuf </span>
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   374
 
<a name="l00405"></a>00405         app-&gt;<a class="code" href="class_c_circular_buffer_example.html#ac317019ee3a32d5dcef6a90e5a52913c">CircularBufferOfRClasssL</a>();
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   375
 
<a name="l00406"></a>00406         CleanupStack::PopAndDestroy(app);
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<a name="l00407"></a>00407         }
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<a name="l00408"></a>00408
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<a name="l00409"></a>00409 GLDEF_C TInt E32Main()
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<a name="l00410"></a>00410         {
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<a name="l00411"></a>00411         __UHEAP_MARK;
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<a name="l00412"></a>00412
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<a name="l00413"></a>00413         CTrapCleanup* cleanup = CTrapCleanup::New();
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<a name="l00414"></a>00414         <span class="keywordflow">if</span>(cleanup == NULL)
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<a name="l00415"></a>00415                 {
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<a name="l00416"></a>00416                 <span class="keywordflow">return</span> KErrNoMemory;
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<a name="l00417"></a>00417                 }
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<a name="l00418"></a>00418         TRAPD(err, MainL());
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<a name="l00419"></a>00419         <span class="keywordflow">if</span>(err !=KErrNone)
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<a name="l00420"></a>00420                 {
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<a name="l00421"></a>00421                 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFailed, <span class="stringliteral">&quot;\nFailed to complete&quot;</span>);
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<a name="l00422"></a>00422                 User::Panic(KFailed, err);
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<a name="l00423"></a>00423                 }
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<a name="l00424"></a>00424         <span class="keyword">delete</span> cleanup;
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<a name="l00425"></a>00425
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<a name="l00426"></a>00426         __UHEAP_MARKEND;
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<a name="l00427"></a>00427         <span class="keywordflow">return</span> KErrNone;
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<a name="l00428"></a>00428         }
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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>
MCL/sftools/depl/docscontent