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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/taskexecutor_8cpp-source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 15:24:26 +0000
changeset 2 ebc84c812384
parent 1 25a17d01db0c
permissions -rw-r--r--
week 10 bug fix submission: Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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<title>TB10.1 Example Applications: examples/SysLibs/TaskSchedulerExample/taskexecutor.cpp Source File</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.5.3 -->
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<h1>examples/SysLibs/TaskSchedulerExample/taskexecutor.cpp</h1><a href="taskexecutor_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) 2007-2009 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 "Eclipse Public License v1.0"</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 "http://www.eclipse.org/legal/epl-v10.html".</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 is simple code that executes the task scheduled by the task scheduler. </span>
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<a name="l00015"></a>00015 <span class="comment">// The code also checks if the task requester has the required capability.</span>
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<a name="l00016"></a>00016 <span class="comment">// This window belongs to the task scheduled to execute by the main program. </span>
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<a name="l00017"></a>00017 <span class="comment">// It shows the details of the task information passed by the Task Scheduler </span>
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<a name="l00018"></a>00018 <span class="comment">// to the executed program. </span>
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<a name="l00019"></a>00019 <span class="comment">//</span>
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<a name="l00020"></a>00020
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<a name="l00021"></a>00021
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<a name="l00022"></a>00022
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<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;schtask.h&gt;</span>
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<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;e32cons.h&gt;</span>
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<a name="l00028"></a>00028
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<a name="l00029"></a>00029 _LIT(KTaskConsoleName, <span class="stringliteral">"TaskExecutor"</span>);
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<a name="l00030"></a>00030 _LIT(KContent,<span class="stringliteral">"\nContents of task file:\n"</span>);
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<a name="l00031"></a>00031 _LIT(KTask,<span class="stringliteral">"\nRunning task: %S"</span>);
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<a name="l00032"></a>00032 _LIT(KTaskData,<span class="stringliteral">"\nThis is the task data for a"</span>);
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<a name="l00033"></a>00033 _LIT(KTaskId,<span class="stringliteral">"\nThe task Id is: %d\n"</span>);
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<a name="l00034"></a>00034 _LIT(KValidity,<span class="stringliteral">"Task is valid until %S\n"</span>);
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<a name="l00035"></a>00035 _LIT(KDateString,<span class="stringliteral">"%H%:1%T %*E%*D%X%*N%Y %1 %2 %3"</span>);
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<a name="l00036"></a>00036 _LIT(KPressAnyKey,<span class="stringliteral">"Press any key to continue \n"</span>);
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<a name="l00037"></a>00037 _LIT(KAbort,<span class="stringliteral">"\nCapabilities of the task scheduler and the executor do not match. Task aborted\n"</span>);
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<a name="l00038"></a>00038 _LIT(KSidMismatch,<span class="stringliteral">"SID of the task executor is not same as that of the scheduler. Task aborted\n"</span>);
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<a name="l00039"></a>00039 <span class="comment">// Uid of the task requester</span>
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<a name="l00040"></a><a class="code" href="taskexecutor_8cpp.html#2e3e010e023b0fc2c3cc546eb1fb0bee">00040</a> <span class="keyword">const</span> TUint32 <a class="code" href="taskexecutor_8cpp.html#2e3e010e023b0fc2c3cc546eb1fb0bee">KTaskSchedulerSid</a> = 0xE80000B5;
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<a name="l00041"></a><a class="code" href="taskexecutor_8cpp.html#13329867681b6c957835919b2205d7ae">00041</a> <span class="keyword">const</span> TCapability <a class="code" href="taskexecutor_8cpp.html#13329867681b6c957835919b2205d7ae">KTaskCapability</a> = ECapabilityWriteDeviceData;
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<a name="l00042"></a>00042
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<a name="l00049"></a><a class="code" href="taskexecutor_8cpp.html#d51792a4c3cfb76bbbd1f61050928332">00049</a> <span class="keywordtype">void</span> <a class="code" href="taskexecutor_8cpp.html#d51792a4c3cfb76bbbd1f61050928332">TaskExecuteL</a>(RFile&amp; aTaskFile)
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<a name="l00050"></a>00050         {
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<a name="l00051"></a>00051         <span class="comment">// Construct console</span>
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<a name="l00052"></a>00052         CConsoleBase* <a class="code" href="dbllist_8cpp.html#d789d40251baeb2f60e118de4856583d">console</a> = Console::NewL(KTaskConsoleName, TSize(KConsFullScreen, KConsFullScreen));
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<a name="l00053"></a>00053         CleanupStack::PushL(console);
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<a name="l00054"></a>00054         console-&gt;Printf(KContent);
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<a name="l00055"></a>00055
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<a name="l00056"></a>00056         <span class="comment">// Open the filestore</span>
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<a name="l00057"></a>00057         CFileStore*     store = CDirectFileStore::FromLC(aTaskFile);<span class="comment">//pushes store onto CleanupStack</span>
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<a name="l00058"></a>00058         RStoreReadStream instream;
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<a name="l00059"></a>00059
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<a name="l00060"></a>00060         <span class="comment">// Open the file containing the store</span>
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<a name="l00061"></a>00061         instream.OpenLC(*store,store-&gt;Root());<span class="comment">//pushes instream onto CleanupStack</span>
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<a name="l00062"></a>00062
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<a name="l00063"></a>00063         <span class="comment">// Get task count</span>
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<a name="l00064"></a>00064         TInt count = instream.ReadInt32L();
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<a name="l00065"></a>00065         <span class="keywordflow">for</span> (TInt i=0;i&lt;count;i++)
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<a name="l00066"></a>00066                 {
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<a name="l00067"></a>00067                 CScheduledTask* task = CScheduledTask::NewLC(instream); <span class="comment">//pushes task onto CleanupStack</span>
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<a name="l00068"></a>00068
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<a name="l00069"></a>00069                 <span class="comment">// Check if this is the SID of task requester</span>
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<a name="l00070"></a>00070                 <span class="keywordflow">if</span>(task-&gt;SecurityInfo().iSecureId == <a class="code" href="taskexecutor_8cpp.html#2e3e010e023b0fc2c3cc546eb1fb0bee">KTaskSchedulerSid</a>)
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<a name="l00071"></a>00071                         {
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<a name="l00072"></a>00072
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<a name="l00073"></a>00073                         <span class="comment">// Check if the requester has the necessary capability to run </span>
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<a name="l00074"></a>00074                         <span class="comment">// the scheduled tasks.</span>
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<a name="l00075"></a>00075                         <span class="keywordflow">if</span>(task-&gt;SecurityInfo().iCaps.HasCapability(<a class="code" href="taskexecutor_8cpp.html#13329867681b6c957835919b2205d7ae">KTaskCapability</a>))
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<a name="l00076"></a>00076                                 {
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<a name="l00077"></a>00077                                 TBuf&lt;50&gt; buf;
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<a name="l00078"></a>00078                                 buf.Format(KTask, &amp;task-&gt;Info().iName);
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<a name="l00079"></a>00079                                 console-&gt;Printf(buf);
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<a name="l00080"></a>00080
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<a name="l00081"></a>00081                                 HBufC* data = <span class="keyword">const_cast&lt;</span>HBufC*<span class="keyword">&gt;</span>(&amp;(task-&gt;Data()));
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<a name="l00082"></a>00082
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<a name="l00083"></a>00083                                 console-&gt;Printf(KTaskData);
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<a name="l00084"></a>00084                                 console-&gt;Printf(*data);
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<a name="l00085"></a>00085
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<a name="l00086"></a>00086                                 console-&gt;Printf(KTaskId,task-&gt;Info().iTaskId);
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<a name="l00087"></a>00087
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<a name="l00088"></a>00088                                 <span class="comment">// Get the time when the task stops being valid</span>
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<a name="l00089"></a>00089                                 TTsTime tstime = task-&gt;ValidUntil();
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<a name="l00090"></a>00090                                 <span class="keyword">const</span> TTime time = tstime.GetLocalTime();
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<a name="l00091"></a>00091                                 TBuf&lt;30&gt; dateString;
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<a name="l00092"></a>00092                                 time.FormatL(dateString,(KDateString));
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<a name="l00093"></a>00093                                 console-&gt;Printf(KValidity, &amp;dateString);
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<a name="l00094"></a>00094                                 }
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<a name="l00095"></a>00095                         <span class="keywordflow">else</span>
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<a name="l00096"></a>00096                                 {
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<a name="l00097"></a>00097                                 console-&gt;Printf(KAbort);
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<a name="l00098"></a>00098                                 }
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<a name="l00099"></a>00099                         }
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<a name="l00100"></a>00100                 <span class="keywordflow">else</span>
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<a name="l00101"></a>00101                         {
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<a name="l00102"></a>00102                         console-&gt;Printf(KSidMismatch);
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<a name="l00103"></a>00103                         }
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<a name="l00104"></a>00104                 console-&gt;Printf(KPressAnyKey);
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<a name="l00105"></a>00105                 console-&gt;Getch();
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<a name="l00106"></a>00106
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<a name="l00107"></a>00107                 CleanupStack::PopAndDestroy(task);
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<a name="l00108"></a>00108
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<a name="l00109"></a>00109                 }
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<a name="l00110"></a>00110
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<a name="l00111"></a>00111         CleanupStack::PopAndDestroy(3); <span class="comment">// instream, store, console</span>
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<a name="l00112"></a>00112         }
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<a name="l00113"></a>00113
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<a name="l00114"></a>00114
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<a name="l00115"></a><a class="code" href="taskexecutor_8cpp.html#8d8d735ffff0047d4b49f80731f10a34">00115</a> TInt <a class="code" href="taskexecutor_8cpp.html#8d8d735ffff0047d4b49f80731f10a34">Execute</a>()
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<a name="l00116"></a>00116         {
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<a name="l00117"></a>00117         TInt err = KErrNoMemory;
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<a name="l00118"></a>00118         CTrapCleanup* cleanup = CTrapCleanup::New();
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<a name="l00119"></a>00119         <span class="keywordflow">if</span> (cleanup)
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<a name="l00120"></a>00120                 {
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<a name="l00121"></a>00121                 RFile file;
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<a name="l00122"></a>00122
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<a name="l00123"></a>00123                 <span class="comment">// Needs to be called early-on to allow the task scheduler server</span>
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<a name="l00124"></a>00124                 <span class="comment">// to adopt the already open task file from the task scheduler</span>
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<a name="l00125"></a>00125                 err = file.AdoptFromCreator(TScheduledTaskFile::FsHandleIndex(),
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<a name="l00126"></a>00126                                                                         TScheduledTaskFile::FileHandleIndex());
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<a name="l00127"></a>00127                 <span class="keywordflow">if</span> (err != KErrNone)
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<a name="l00128"></a>00128                         {
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<a name="l00129"></a>00129                         <span class="keywordflow">return</span> err;
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<a name="l00130"></a>00130                         }
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<a name="l00131"></a>00131
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<a name="l00132"></a>00132                 <span class="comment">// Execute </span>
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<a name="l00133"></a>00133                 TRAPD(err,<a class="code" href="taskexecutor_8cpp.html#d51792a4c3cfb76bbbd1f61050928332">TaskExecuteL</a>(file));
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<a name="l00134"></a>00134                 <span class="keywordflow">if</span>(err != KErrNone)
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<a name="l00135"></a>00135                         {
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<a name="l00136"></a>00136                         User::Panic(_L(<span class="stringliteral">"Failed to complete"</span>),err);
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<a name="l00137"></a>00137                         }
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<a name="l00138"></a>00138
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<a name="l00139"></a>00139                 <span class="comment">// Close the file</span>
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<a name="l00140"></a>00140                 file.Close();
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<a name="l00141"></a>00141                 <span class="keyword">delete</span> cleanup;
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<a name="l00142"></a>00142                 }
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<a name="l00143"></a>00143         <span class="keywordflow">return</span> err;
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<a name="l00144"></a>00144         }
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<a name="l00145"></a>00145
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<a name="l00146"></a>00146
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<a name="l00147"></a><a class="code" href="taskexecutor_8cpp.html#0f358e9c4355138f629b8c4f37310295">00147</a> GLDEF_C TInt <a class="code" href="dbllist_8cpp.html#0f358e9c4355138f629b8c4f37310295">E32Main</a>()
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<a name="l00148"></a>00148         {
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<a name="l00149"></a>00149         <span class="keywordflow">return</span> <a class="code" href="taskexecutor_8cpp.html#8d8d735ffff0047d4b49f80731f10a34">Execute</a>();
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<a name="l00150"></a>00150         }
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</pre></div><hr size="1"><address style="text-align: right;"><small>Generated on Thu Jan 21 10:33:01 2010 for TB10.1 Example Applications by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address>
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</body>
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</html>
FCL/sftools/depl/docscontent