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11 <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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12 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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13 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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14 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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15 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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16 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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17 <a name="l00007"></a>00007 <span class="comment">//</span> |
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18 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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19 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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20 <a name="l00010"></a>00010 <span class="comment">//</span> |
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21 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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22 <a name="l00012"></a>00012 <span class="comment">//</span> |
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23 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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24 <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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25 <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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26 <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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27 <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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28 <a name="l00018"></a>00018 <span class="comment">// to the executed program. </span> |
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29 <a name="l00019"></a>00019 <span class="comment">//</span> |
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30 <a name="l00020"></a>00020 |
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31 <a name="l00021"></a>00021 |
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32 <a name="l00022"></a>00022 |
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33 <a name="l00026"></a>00026 <span class="preprocessor">#include <schtask.h></span> |
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34 <a name="l00027"></a>00027 <span class="preprocessor">#include <e32cons.h></span> |
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35 <a name="l00028"></a>00028 |
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36 <a name="l00029"></a>00029 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTaskConsoleName, <span class="stringliteral">"TaskExecutor"</span>); |
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37 <a name="l00030"></a>00030 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KContent,<span class="stringliteral">"\nContents of task file:\n"</span>); |
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38 <a name="l00031"></a>00031 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTask,<span class="stringliteral">"\nRunning task: %S"</span>); |
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39 <a name="l00032"></a>00032 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTaskData,<span class="stringliteral">"\nThis is the task data for a"</span>); |
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40 <a name="l00033"></a>00033 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTaskId,<span class="stringliteral">"\nThe task Id is: %d\n"</span>); |
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41 <a name="l00034"></a>00034 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KValidity,<span class="stringliteral">"Task is valid until %S\n"</span>); |
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42 <a name="l00035"></a>00035 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDateString,<span class="stringliteral">"%H%:1%T %*E%*D%X%*N%Y %1 %2 %3"</span>); |
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43 <a name="l00036"></a>00036 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPressAnyKey,<span class="stringliteral">"Press any key to continue \n"</span>); |
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44 <a name="l00037"></a>00037 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KAbort,<span class="stringliteral">"\nCapabilities of the task scheduler and the executor do not match. Task aborted\n"</span>); |
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45 <a name="l00038"></a>00038 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(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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46 <a name="l00039"></a>00039 <span class="comment">// Uid of the task requester</span> |
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47 <a name="l00040"></a>00040 <span class="keyword">const</span> TUint32 KTaskSchedulerSid = 0xE80000B5; |
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48 <a name="l00041"></a>00041 <span class="keyword">const</span> TCapability KTaskCapability = ECapabilityWriteDeviceData; |
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49 <a name="l00042"></a>00042 |
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50 <a name="l00049"></a><a class="code" href="taskexecutor_8cpp.html#ad51792a4c3cfb76bbbd1f61050928332">00049</a> <span class="keywordtype">void</span> <a class="code" href="taskexecutor_8cpp.html#ad51792a4c3cfb76bbbd1f61050928332">TaskExecuteL</a>(RFile& aTaskFile) |
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51 <a name="l00050"></a>00050 { |
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52 <a name="l00051"></a>00051 <span class="comment">// Construct console</span> |
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53 <a name="l00052"></a>00052 CConsoleBase* console = Console::NewL(KTaskConsoleName, TSize(KConsFullScreen, KConsFullScreen)); |
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54 <a name="l00053"></a>00053 CleanupStack::PushL(console); |
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55 <a name="l00054"></a>00054 console->Printf(KContent); |
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56 <a name="l00055"></a>00055 |
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57 <a name="l00056"></a>00056 <span class="comment">// Open the filestore</span> |
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58 <a name="l00057"></a>00057 CFileStore* store = CDirectFileStore::FromLC(aTaskFile);<span class="comment">//pushes store onto CleanupStack</span> |
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59 <a name="l00058"></a>00058 RStoreReadStream instream; |
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60 <a name="l00059"></a>00059 |
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61 <a name="l00060"></a>00060 <span class="comment">// Open the file containing the store</span> |
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62 <a name="l00061"></a>00061 instream.OpenLC(*store,store->Root());<span class="comment">//pushes instream onto CleanupStack</span> |
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63 <a name="l00062"></a>00062 |
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64 <a name="l00063"></a>00063 <span class="comment">// Get task count</span> |
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65 <a name="l00064"></a>00064 TInt count = instream.ReadInt32L(); |
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66 <a name="l00065"></a>00065 <span class="keywordflow">for</span> (TInt i=0;i<count;i++) |
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67 <a name="l00066"></a>00066 { |
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68 <a name="l00067"></a>00067 CScheduledTask* task = CScheduledTask::NewLC(instream); <span class="comment">//pushes task onto CleanupStack</span> |
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69 <a name="l00068"></a>00068 |
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70 <a name="l00069"></a>00069 <span class="comment">// Check if this is the SID of task requester</span> |
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71 <a name="l00070"></a>00070 <span class="keywordflow">if</span>(task->SecurityInfo().iSecureId == KTaskSchedulerSid) |
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72 <a name="l00071"></a>00071 { |
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73 <a name="l00072"></a>00072 |
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74 <a name="l00073"></a>00073 <span class="comment">// Check if the requester has the necessary capability to run </span> |
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75 <a name="l00074"></a>00074 <span class="comment">// the scheduled tasks.</span> |
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76 <a name="l00075"></a>00075 <span class="keywordflow">if</span>(task->SecurityInfo().iCaps.HasCapability(KTaskCapability)) |
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77 <a name="l00076"></a>00076 { |
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78 <a name="l00077"></a>00077 TBuf<50> buf; |
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79 <a name="l00078"></a>00078 buf.Format(KTask, &task->Info().iName); |
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80 <a name="l00079"></a>00079 console->Printf(buf); |
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81 <a name="l00080"></a>00080 |
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82 <a name="l00081"></a>00081 HBufC* data = <span class="keyword">const_cast<</span>HBufC*<span class="keyword">></span>(&(task->Data())); |
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83 <a name="l00082"></a>00082 |
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84 <a name="l00083"></a>00083 console->Printf(KTaskData); |
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85 <a name="l00084"></a>00084 console->Printf(*data); |
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86 <a name="l00085"></a>00085 |
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87 <a name="l00086"></a>00086 console->Printf(KTaskId,task->Info().iTaskId); |
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88 <a name="l00087"></a>00087 |
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89 <a name="l00088"></a>00088 <span class="comment">// Get the time when the task stops being valid</span> |
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90 <a name="l00089"></a>00089 TTsTime tstime = task->ValidUntil(); |
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91 <a name="l00090"></a>00090 <span class="keyword">const</span> TTime time = tstime.GetLocalTime(); |
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92 <a name="l00091"></a>00091 TBuf<30> dateString; |
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93 <a name="l00092"></a>00092 time.FormatL(dateString,(KDateString)); |
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94 <a name="l00093"></a>00093 console->Printf(KValidity, &dateString); |
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95 <a name="l00094"></a>00094 } |
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96 <a name="l00095"></a>00095 <span class="keywordflow">else</span> |
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97 <a name="l00096"></a>00096 { |
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98 <a name="l00097"></a>00097 console->Printf(KAbort); |
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99 <a name="l00098"></a>00098 } |
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100 <a name="l00099"></a>00099 } |
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101 <a name="l00100"></a>00100 <span class="keywordflow">else</span> |
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102 <a name="l00101"></a>00101 { |
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103 <a name="l00102"></a>00102 console->Printf(KSidMismatch); |
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104 <a name="l00103"></a>00103 } |
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105 <a name="l00104"></a>00104 console->Printf(KPressAnyKey); |
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106 <a name="l00105"></a>00105 console->Getch(); |
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107 <a name="l00106"></a>00106 |
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108 <a name="l00107"></a>00107 CleanupStack::PopAndDestroy(task); |
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109 <a name="l00108"></a>00108 |
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110 <a name="l00109"></a>00109 } |
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111 <a name="l00110"></a>00110 |
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112 <a name="l00111"></a>00111 CleanupStack::PopAndDestroy(3); <span class="comment">// instream, store, console</span> |
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113 <a name="l00112"></a>00112 } |
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114 <a name="l00113"></a>00113 |
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115 <a name="l00114"></a>00114 |
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116 <a name="l00115"></a>00115 TInt Execute() |
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117 <a name="l00116"></a>00116 { |
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118 <a name="l00117"></a>00117 TInt err = KErrNoMemory; |
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119 <a name="l00118"></a>00118 CTrapCleanup* cleanup = CTrapCleanup::New(); |
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120 <a name="l00119"></a>00119 <span class="keywordflow">if</span> (cleanup) |
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121 <a name="l00120"></a>00120 { |
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122 <a name="l00121"></a>00121 RFile file; |
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123 <a name="l00122"></a>00122 |
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124 <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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125 <a name="l00124"></a>00124 <span class="comment">// to adopt the already open task file from the task scheduler</span> |
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126 <a name="l00125"></a>00125 err = file.AdoptFromCreator(TScheduledTaskFile::FsHandleIndex(), |
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127 <a name="l00126"></a>00126 TScheduledTaskFile::FileHandleIndex()); |
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128 <a name="l00127"></a>00127 <span class="keywordflow">if</span> (err != KErrNone) |
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129 <a name="l00128"></a>00128 { |
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130 <a name="l00129"></a>00129 <span class="keywordflow">return</span> err; |
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131 <a name="l00130"></a>00130 } |
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132 <a name="l00131"></a>00131 |
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133 <a name="l00132"></a>00132 <span class="comment">// Execute </span> |
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134 <a name="l00133"></a>00133 TRAPD(err,<a class="code" href="taskexecutor_8cpp.html#ad51792a4c3cfb76bbbd1f61050928332">TaskExecuteL</a>(file)); |
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135 <a name="l00134"></a>00134 <span class="keywordflow">if</span>(err != KErrNone) |
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136 <a name="l00135"></a>00135 { |
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137 <a name="l00136"></a>00136 User::Panic(_L(<span class="stringliteral">"Failed to complete"</span>),err); |
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138 <a name="l00137"></a>00137 } |
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139 <a name="l00138"></a>00138 |
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140 <a name="l00139"></a>00139 <span class="comment">// Close the file</span> |
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141 <a name="l00140"></a>00140 file.Close(); |
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142 <a name="l00141"></a>00141 <span class="keyword">delete</span> cleanup; |
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143 <a name="l00142"></a>00142 } |
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144 <a name="l00143"></a>00143 <span class="keywordflow">return</span> err; |
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145 <a name="l00144"></a>00144 } |
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146 <a name="l00145"></a>00145 |
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147 <a name="l00146"></a>00146 |
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148 <a name="l00147"></a><a class="code" href="taskexecutor_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00147</a> GLDEF_C TInt E32Main() |
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149 <a name="l00148"></a>00148 { |
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150 <a name="l00149"></a>00149 <span class="keywordflow">return</span> Execute(); |
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151 <a name="l00150"></a>00150 } |
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152 </pre></div></div> |
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