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8 <h1>examples/SysLibs/TaskSchedulerExample/taskscheduler.cpp</h1><a href="taskscheduler_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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9 <a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span> |
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10 <a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span> |
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11 <a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span> |
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12 <a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span> |
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13 <a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span> |
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14 <a name="l00007"></a>00007 <span class="comment">//</span> |
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15 <a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span> |
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16 <a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span> |
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17 <a name="l00010"></a>00010 <span class="comment">//</span> |
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18 <a name="l00011"></a>00011 <span class="comment">// Contributors:</span> |
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19 <a name="l00012"></a>00012 <span class="comment">//</span> |
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20 <a name="l00013"></a>00013 <span class="comment">// Description:</span> |
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21 <a name="l00014"></a>00014 <span class="comment">// This is simple example code that demonstrates the use of task scheduler. </span> |
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22 <a name="l00015"></a>00015 <span class="comment">// The code demonstrates how to,</span> |
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23 <a name="l00016"></a>00016 <span class="comment">// 1) Connect and register with the task scheduler</span> |
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24 <a name="l00017"></a>00017 <span class="comment">// 2) Create a persistent schedule</span> |
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25 <a name="l00018"></a>00018 <span class="comment">// 3) Add tasks to it</span> |
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26 <a name="l00019"></a>00019 <span class="comment">// 4) Execute the schedule</span> |
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27 <a name="l00020"></a>00020 <span class="comment">// 5) Delete the schedules and the tasks associated with them after</span> |
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28 <a name="l00021"></a>00021 <span class="comment">// verifying that they are the schedules created by us.</span> |
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29 <a name="l00022"></a>00022 <span class="comment">// 6) Create a transient schedule</span> |
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30 <a name="l00023"></a>00023 <span class="comment">// 7) Add task to the transient schedule, edit the schedule and execute it</span> |
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31 <a name="l00024"></a>00024 <span class="comment">//</span> |
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32 <a name="l00025"></a>00025 |
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33 <a name="l00026"></a>00026 |
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34 <a name="l00027"></a>00027 |
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35 <a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="taskscheduler_8h.html">taskscheduler.h</a>"</span> |
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36 <a name="l00032"></a>00032 <span class="preprocessor">#include <e32std.h></span> |
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37 <a name="l00033"></a>00033 <span class="preprocessor">#include <schinfo.h></span> |
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38 <a name="l00034"></a>00034 <span class="preprocessor">#include <e32base.h></span> |
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39 <a name="l00035"></a>00035 |
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40 <a name="l00036"></a>00036 _LIT(KTaskName,<span class="stringliteral">"MyTaskName\n"</span>); |
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41 <a name="l00037"></a>00037 |
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42 <a name="l00038"></a>00038 _LIT(KTitle, <span class="stringliteral">"Task Scheduler example"</span>); |
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43 <a name="l00039"></a>00039 _LIT(KTextPressAKey, <span class="stringliteral">"\nPress any key to step through the example\n"</span>); |
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44 <a name="l00040"></a>00040 _LIT(KExit,<span class="stringliteral">"\nPress any key to exit the application"</span>); |
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45 <a name="l00041"></a>00041 _LIT(KPressAKey,<span class="stringliteral">"\nPress any key to continue\n"</span>); |
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46 <a name="l00042"></a>00042 |
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47 <a name="l00043"></a>00043 _LIT(KConnect, <span class="stringliteral">"\nConnecting the client to the task scheduler server"</span>); |
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48 <a name="l00044"></a>00044 _LIT(KRegisterClient,<span class="stringliteral">"\nRegistering the client\n"</span>); |
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49 <a name="l00045"></a>00045 _LIT(KCreateSchedule,<span class="stringliteral">"Creating a persistent schedule\n"</span>); |
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50 <a name="l00046"></a>00046 _LIT(KCreateTask,<span class="stringliteral">"Creating task for the schedule\n"</span>); |
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51 <a name="l00047"></a>00047 |
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52 <a name="l00048"></a>00048 _LIT(KPersistentWait,<span class="stringliteral">"Waiting for the persistent task to complete. This will take 20 seconds\n"</span>); |
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53 <a name="l00049"></a>00049 _LIT(KDone,<span class="stringliteral">"Task complete \n"</span>); |
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54 <a name="l00050"></a>00050 _LIT(KTransientSchedule,<span class="stringliteral">"A transient schedule"</span>); |
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55 <a name="l00051"></a>00051 _LIT(KTransientWait,<span class="stringliteral">"Waiting for the transient task to complete. This will take 20 seconds\n"</span>); |
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56 <a name="l00052"></a>00052 |
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57 <a name="l00053"></a>00053 _LIT(KCreateTransient,<span class="stringliteral">"\nCreating a transient schedule with non-repeating task\n"</span>); |
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58 <a name="l00054"></a>00054 _LIT(KDeleteAllTasks,<span class="stringliteral">"\nDeleting all the persistent tasks scheduled by this exe"</span>); |
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59 <a name="l00055"></a>00055 _LIT(KDeleteAllSchedules,<span class="stringliteral">"\nDeleting all schedules created by this exe\n"</span>); |
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60 <a name="l00056"></a>00056 _LIT(KTask, <span class="stringliteral">"Number of task(s) scheduled by us is(are) %d\n"</span>); |
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61 <a name="l00057"></a>00057 _LIT(KExists, <span class="stringliteral">"The tasks scheduled exist\n"</span>); |
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62 <a name="l00058"></a>00058 _LIT(KOtherTask,<span class="stringliteral">"Error! Unexpected schedules not scheduled by this exe exist\n"</span>); |
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63 <a name="l00059"></a>00059 |
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64 <a name="l00064"></a><a class="code" href="class_c_task_schedule.html#d152b61017146041468ce89a4312ddf9">00064</a> <a class="code" href="class_c_task_schedule.html">CTaskSchedule</a>* <a class="code" href="class_c_task_schedule.html#d152b61017146041468ce89a4312ddf9">CTaskSchedule::NewLC</a>() |
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65 <a name="l00065"></a>00065 { |
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66 <a name="l00066"></a>00066 <a class="code" href="class_c_task_schedule.html">CTaskSchedule</a>* schedule = <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_task_schedule.html">CTaskSchedule</a>(); |
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67 <a name="l00067"></a>00067 CleanupStack::PushL(schedule); |
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68 <a name="l00068"></a>00068 schedule-><a class="code" href="class_c_task_schedule.html#05ad797c4ac25b60b42ae93b1c932830">ConstructL</a>(); |
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69 <a name="l00069"></a>00069 <span class="keywordflow">return</span> schedule; |
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70 <a name="l00070"></a>00070 } |
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71 <a name="l00071"></a>00071 |
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72 <a name="l00075"></a>00075 CTaskSchedule::CTaskSchedule() |
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73 <a name="l00076"></a>00076 { |
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74 <a name="l00077"></a>00077 } |
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75 <a name="l00078"></a>00078 |
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76 <a name="l00079"></a>00079 <span class="keywordtype">void</span> CTaskSchedule::ConstructL() |
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77 <a name="l00080"></a>00080 { |
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78 <a name="l00081"></a>00081 iConsole = Console::NewL(KTitle,TSize(KConsFullScreen,KConsFullScreen)); |
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79 <a name="l00082"></a>00082 iConsole->Printf (KTextPressAKey); |
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80 <a name="l00083"></a>00083 iConsole->Getch (); |
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81 <a name="l00084"></a>00084 } |
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82 <a name="l00085"></a>00085 |
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83 <a name="l00089"></a><a class="code" href="class_c_task_schedule.html#739ccbea3ef8f1dc76440e829f206fb6">00089</a> <a class="code" href="class_c_task_schedule.html#739ccbea3ef8f1dc76440e829f206fb6">CTaskSchedule::~CTaskSchedule</a>() |
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84 <a name="l00090"></a>00090 { |
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85 <a name="l00091"></a>00091 iScheduler.Close(); |
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86 <a name="l00092"></a>00092 iConsole->Printf(KExit); |
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87 <a name="l00093"></a>00093 iConsole->Getch(); |
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88 <a name="l00094"></a>00094 |
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89 <a name="l00095"></a>00095 <span class="keyword">delete</span> iConsole; |
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90 <a name="l00096"></a>00096 } |
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91 <a name="l00097"></a>00097 |
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92 <a name="l00104"></a><a class="code" href="class_c_task_schedule.html#c957da1838fe31cb3f7fe9f6a533f6c5">00104</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#c957da1838fe31cb3f7fe9f6a533f6c5">CTaskSchedule::ConnectAndRegisterL</a>() |
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93 <a name="l00105"></a>00105 { |
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94 <a name="l00106"></a>00106 |
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95 <a name="l00107"></a>00107 <span class="comment">// Connect to the scheduler server</span> |
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96 <a name="l00108"></a>00108 iConsole->Printf(KConnect); |
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97 <a name="l00109"></a>00109 User::LeaveIfError(iScheduler.Connect()); |
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98 <a name="l00110"></a>00110 |
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99 <a name="l00111"></a>00111 _LIT(KTaskExec,<span class="stringliteral">"Taskexecutor"</span>); |
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100 <a name="l00112"></a>00112 TFileName filename; |
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101 <a name="l00113"></a>00113 filename.Append(KTaskExec); |
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102 <a name="l00114"></a>00114 |
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103 <a name="l00115"></a>00115 <span class="comment">// Register with the scheduler</span> |
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104 <a name="l00116"></a>00116 iConsole->Printf(KRegisterClient); |
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105 <a name="l00117"></a>00117 |
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106 <a name="l00118"></a>00118 <span class="comment">// A priority value</span> |
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107 <a name="l00119"></a>00119 <span class="keyword">const</span> TInt priority = 3; |
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108 <a name="l00120"></a>00120 User::LeaveIfError(iScheduler.Register(filename, priority)); |
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109 <a name="l00121"></a>00121 |
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110 <a name="l00122"></a>00122 } |
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111 <a name="l00123"></a>00123 |
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112 <a name="l00130"></a><a class="code" href="class_c_task_schedule.html#5b7869136d2a8f1c625531ab1c12ef98">00130</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#5b7869136d2a8f1c625531ab1c12ef98">CTaskSchedule::PersistentScheduleL</a>() |
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113 <a name="l00131"></a>00131 { |
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114 <a name="l00132"></a>00132 |
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115 <a name="l00133"></a>00133 iConsole->Printf(KCreateSchedule); |
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116 <a name="l00134"></a>00134 TSchedulerItemRef scheduleHandle; |
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117 <a name="l00135"></a>00135 TTime time; |
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118 <a name="l00136"></a>00136 time.UniversalTime(); |
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119 <a name="l00137"></a>00137 |
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120 <a name="l00138"></a>00138 <span class="comment">// Assign an offset of 20 seconds. TTimeIntervalMinutes, </span> |
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121 <a name="l00139"></a>00139 <span class="comment">// TTimeIntervalHours etc can be used for longer offsets.</span> |
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122 <a name="l00140"></a>00140 time += TTimeIntervalSeconds(20);<span class="comment">// 20 secs in future</span> |
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123 <a name="l00141"></a>00141 |
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124 <a name="l00142"></a>00142 TTsTime time2 (time, ETrue); |
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125 <a name="l00143"></a>00143 |
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126 <a name="l00144"></a>00144 iConsole->Printf(KCreateTask); |
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127 <a name="l00145"></a>00145 <a class="code" href="class_c_task_schedule.html#c2ed627ab19ecc8d397b63ceacd6aaa4">CreatePersistentScheduleL</a>(scheduleHandle,time2); |
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128 <a name="l00146"></a>00146 |
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129 <a name="l00147"></a>00147 <span class="comment">// Create the task to be scheduled</span> |
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130 <a name="l00148"></a>00148 TTaskInfo taskInfo; |
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131 <a name="l00149"></a>00149 |
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132 <a name="l00150"></a>00150 <span class="keyword">const</span> TInt priority = 2; |
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133 <a name="l00151"></a>00151 <span class="keyword">const</span> TInt numberOfRepeats = 2; |
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134 <a name="l00152"></a>00152 <span class="comment">// Name of the task</span> |
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135 <a name="l00153"></a>00153 taskInfo.iName = KTaskName; |
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136 <a name="l00154"></a>00154 |
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137 <a name="l00155"></a>00155 <span class="comment">// Task priority set by the client. </span> |
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138 <a name="l00156"></a>00156 <span class="comment">// If the client has two tasks with different priorities, </span> |
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139 <a name="l00157"></a>00157 <span class="comment">// the task with the higher priority will be executed first.</span> |
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140 <a name="l00158"></a>00158 taskInfo.iPriority = priority; |
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141 <a name="l00159"></a>00159 |
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142 <a name="l00160"></a>00160 <span class="comment">// Task repeats twice</span> |
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143 <a name="l00161"></a>00161 taskInfo.iRepeat = numberOfRepeats; |
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144 <a name="l00162"></a>00162 |
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145 <a name="l00163"></a>00163 _LIT(KScheduleType,<span class="stringliteral">" persistent schedule"</span>); |
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146 <a name="l00164"></a>00164 <span class="keyword">const</span> TDesC* persistent = &KScheduleType; |
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147 <a name="l00165"></a>00165 HBufC* data = persistent->AllocLC(); |
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148 <a name="l00166"></a>00166 |
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149 <a name="l00167"></a>00167 <span class="comment">// Add the task</span> |
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150 <a name="l00168"></a>00168 User::LeaveIfError(iScheduler.ScheduleTask(taskInfo, *data, scheduleHandle.iHandle)); |
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151 <a name="l00169"></a>00169 |
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152 <a name="l00170"></a>00170 <span class="comment">// Wait for the entry to fire</span> |
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153 <a name="l00171"></a>00171 iConsole->Printf(KPersistentWait); |
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154 <a name="l00172"></a>00172 <span class="keyword">const</span> TInt twentySecs = 20000000; |
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155 <a name="l00173"></a>00173 User::After(twentySecs); <span class="comment">// pause for 20 seconds</span> |
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156 <a name="l00174"></a>00174 |
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157 <a name="l00175"></a>00175 <span class="comment">// Delete all the persistent schedules created</span> |
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158 <a name="l00176"></a>00176 <a class="code" href="class_c_task_schedule.html#0c3db205409436a0b47b3e11c9d3190f">DeleteSchedulesL</a>(scheduleHandle, EAllSchedules); |
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159 <a name="l00177"></a>00177 |
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160 <a name="l00178"></a>00178 CleanupStack::PopAndDestroy(1); <span class="comment">// data</span> |
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161 <a name="l00179"></a>00179 |
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162 <a name="l00180"></a>00180 } |
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163 <a name="l00181"></a>00181 |
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164 <a name="l00182"></a>00182 |
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165 <a name="l00197"></a><a class="code" href="class_c_task_schedule.html#c2ed627ab19ecc8d397b63ceacd6aaa4">00197</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#c2ed627ab19ecc8d397b63ceacd6aaa4">CTaskSchedule::CreatePersistentScheduleL</a>(TSchedulerItemRef& aRef, <span class="keyword">const</span> TTsTime& aStartTime) |
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166 <a name="l00198"></a>00198 { |
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167 <a name="l00199"></a>00199 CArrayFixFlat<TScheduleEntryInfo2>* cSchEntryInfoArray; |
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168 <a name="l00200"></a>00200 cSchEntryInfoArray = <span class="keyword">new</span> CArrayFixFlat<TScheduleEntryInfo2>(1); |
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169 <a name="l00201"></a>00201 CleanupStack::PushL(cSchEntryInfoArray); |
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170 <a name="l00202"></a>00202 |
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171 <a name="l00203"></a>00203 <span class="comment">// Create an hourly schedule with StartTime of aStartTime</span> |
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172 <a name="l00204"></a>00204 TScheduleEntryInfo2 entry1; |
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173 <a name="l00205"></a>00205 |
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174 <a name="l00206"></a>00206 <span class="comment">// Set the first instance when the entry will </span> |
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175 <a name="l00207"></a>00207 <span class="comment">// cause the execution of tasks. </span> |
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176 <a name="l00208"></a>00208 entry1.SetStartTime(aStartTime); |
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177 <a name="l00209"></a>00209 |
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178 <a name="l00210"></a>00210 <span class="comment">// Set the type of interval used between due times </span> |
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179 <a name="l00211"></a>00211 <span class="comment">// for the scheduled entry</span> |
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180 <a name="l00212"></a>00212 entry1.SetIntervalType(TIntervalType(EHourly)); |
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181 <a name="l00213"></a>00213 |
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182 <a name="l00214"></a>00214 <span class="comment">// Set the period for which the entry is valid. After 8 hours the </span> |
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183 <a name="l00215"></a>00215 <span class="comment">// tasks associated with the entry will not be eligible for execution.</span> |
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184 <a name="l00216"></a>00216 <span class="keyword">const</span> TInt eightHours = 480; <span class="comment">// in minutes </span> |
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185 <a name="l00217"></a>00217 entry1.SetValidityPeriod(TTimeIntervalMinutes (eightHours)); |
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186 <a name="l00218"></a>00218 |
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187 <a name="l00219"></a>00219 <span class="comment">// Set the interval between execution of tasks</span> |
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188 <a name="l00220"></a>00220 <span class="comment">// Here the interval is 1 hour because the interval type is hourly.</span> |
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189 <a name="l00221"></a>00221 <span class="keyword">const</span> TInt interval = 1; |
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190 <a name="l00222"></a>00222 entry1.SetInterval(interval); |
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191 <a name="l00223"></a>00223 |
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192 <a name="l00224"></a>00224 cSchEntryInfoArray->AppendL(entry1); |
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193 <a name="l00225"></a>00225 |
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194 <a name="l00226"></a>00226 User::LeaveIfError(iScheduler.CreatePersistentSchedule(aRef, *cSchEntryInfoArray)); |
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195 <a name="l00227"></a>00227 CleanupStack::PopAndDestroy(cSchEntryInfoArray); |
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196 <a name="l00228"></a>00228 |
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197 <a name="l00229"></a>00229 } |
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198 <a name="l00230"></a>00230 |
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199 <a name="l00231"></a>00231 |
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200 <a name="l00240"></a><a class="code" href="class_c_task_schedule.html#abfef5ace0331f83eb8cd4de511d3d7f">00240</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#abfef5ace0331f83eb8cd4de511d3d7f">CTaskSchedule::CreateTransientScheduleL</a>() |
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201 <a name="l00241"></a>00241 { |
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202 <a name="l00242"></a>00242 iConsole->ClearScreen(); |
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203 <a name="l00243"></a>00243 |
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204 <a name="l00244"></a>00244 TSchedulerItemRef ref; |
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205 <a name="l00245"></a>00245 CArrayFixFlat<TScheduleEntryInfo2>* cSchEntryInfoArray; |
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206 <a name="l00246"></a>00246 cSchEntryInfoArray = <span class="keyword">new</span> CArrayFixFlat<TScheduleEntryInfo2>(1); |
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207 <a name="l00247"></a>00247 |
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208 <a name="l00248"></a>00248 CleanupStack::PushL(cSchEntryInfoArray); |
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209 <a name="l00249"></a>00249 ref.iName = KTransientSchedule; |
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210 <a name="l00250"></a>00250 iConsole->Printf(KCreateTransient); |
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211 <a name="l00251"></a>00251 |
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212 <a name="l00252"></a>00252 <span class="comment">// Create a schedule entry</span> |
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213 <a name="l00253"></a>00253 TScheduleEntryInfo2 entry; |
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214 <a name="l00254"></a>00254 TTime now; |
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215 <a name="l00255"></a>00255 |
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216 <a name="l00256"></a>00256 <span class="comment">// Set the date and time of this TTime to the universal time. </span> |
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217 <a name="l00257"></a>00257 now.UniversalTime(); |
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218 <a name="l00258"></a>00258 |
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219 <a name="l00259"></a>00259 <span class="comment">// Assign an offset of 15 seconds. TTimeIntervalMinutes, </span> |
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220 <a name="l00260"></a>00260 <span class="comment">// TTimeIntervalHours etc can be used for longer offsets.</span> |
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221 <a name="l00261"></a>00261 TInt offset = 15; |
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222 <a name="l00262"></a>00262 now += TTimeIntervalSeconds(offset); |
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223 <a name="l00263"></a>00263 |
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224 <a name="l00264"></a>00264 <span class="comment">// Constructs a TTsTime with a TTime object. </span> |
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225 <a name="l00265"></a>00265 <span class="comment">// ETrue indicates that TTsTime is UTC based time</span> |
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226 <a name="l00266"></a>00266 TTsTime time (now, ETrue); |
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227 <a name="l00267"></a>00267 |
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228 <a name="l00268"></a>00268 <span class="comment">// Set the above time as the first time at which </span> |
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229 <a name="l00269"></a>00269 <span class="comment">// the entry will cause execution of tasks. </span> |
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230 <a name="l00270"></a>00270 entry.SetStartTime(time); |
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231 <a name="l00271"></a>00271 |
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232 <a name="l00272"></a>00272 <span class="comment">// Set the type of interval used between due times for scheduled entry</span> |
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233 <a name="l00273"></a>00273 entry.SetIntervalType(TIntervalType(EHourly)); |
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234 <a name="l00274"></a>00274 |
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235 <a name="l00275"></a>00275 <span class="comment">// Set the period for which the entry is valid. </span> |
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236 <a name="l00276"></a>00276 <span class="comment">// After 2 hours the tasks associated with the entry will not be eligible for execution </span> |
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237 <a name="l00277"></a>00277 TInt validity = 120; |
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238 <a name="l00278"></a>00278 entry.SetValidityPeriod(TTimeIntervalMinutes (validity)); |
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239 <a name="l00279"></a>00279 |
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240 <a name="l00280"></a>00280 <span class="comment">// Set the interval between execution of tasks</span> |
|
241 <a name="l00281"></a>00281 <span class="comment">// Here the interval is 1 hour because the interval type is hourly.</span> |
|
242 <a name="l00282"></a>00282 entry.SetInterval(1); |
|
243 <a name="l00283"></a>00283 cSchEntryInfoArray->AppendL(entry); |
|
244 <a name="l00284"></a>00284 |
|
245 <a name="l00285"></a>00285 <span class="comment">// Create a transient task to be scheduled</span> |
|
246 <a name="l00286"></a>00286 TTaskInfo taskInfo; |
|
247 <a name="l00287"></a>00287 <span class="comment">// Name of the task</span> |
|
248 <a name="l00288"></a>00288 taskInfo.iName = KTransientSchedule; |
|
249 <a name="l00289"></a>00289 <span class="comment">// Task id</span> |
|
250 <a name="l00290"></a>00290 <span class="keyword">const</span> TInt tId = 0; |
|
251 <a name="l00291"></a>00291 taskInfo.iTaskId = tId; |
|
252 <a name="l00292"></a>00292 |
|
253 <a name="l00293"></a>00293 <span class="comment">// The task repeats just once</span> |
|
254 <a name="l00294"></a>00294 <span class="keyword">const</span> TInt numberOfRepeats = 1; |
|
255 <a name="l00295"></a>00295 taskInfo.iRepeat = numberOfRepeats; |
|
256 <a name="l00296"></a>00296 |
|
257 <a name="l00297"></a>00297 <span class="comment">// Task priority set by the client. </span> |
|
258 <a name="l00298"></a>00298 <span class="comment">// Where a client has two tasks with different priorities, </span> |
|
259 <a name="l00299"></a>00299 <span class="comment">// the task with the higher priority will be executed first.</span> |
|
260 <a name="l00300"></a>00300 <span class="keyword">const</span> TInt priority = 2; |
|
261 <a name="l00301"></a>00301 taskInfo.iPriority = priority; |
|
262 <a name="l00302"></a>00302 |
|
263 <a name="l00303"></a>00303 _LIT(KScheduleType,<span class="stringliteral">" transient schedule"</span>); |
|
264 <a name="l00304"></a>00304 <span class="keyword">const</span> TDesC* <span class="keyword">transient</span> = &KScheduleType; |
|
265 <a name="l00305"></a>00305 HBufC* data = <span class="keyword">transient</span>->AllocLC(); |
|
266 <a name="l00306"></a>00306 |
|
267 <a name="l00307"></a>00307 <span class="comment">// Schedule the item</span> |
|
268 <a name="l00308"></a>00308 User::LeaveIfError(iScheduler.ScheduleTask(taskInfo, *data, ref, *cSchEntryInfoArray)); |
|
269 <a name="l00309"></a>00309 |
|
270 <a name="l00310"></a>00310 <span class="comment">// Change the start time and validity duration for the schedule</span> |
|
271 <a name="l00311"></a>00311 offset = 19; <span class="comment">// 19 seconds in future</span> |
|
272 <a name="l00312"></a>00312 now += TTimeIntervalSeconds(offset); |
|
273 <a name="l00313"></a>00313 TTsTime newTime (now, ETrue); |
|
274 <a name="l00314"></a>00314 entry.SetStartTime(newTime); |
|
275 <a name="l00315"></a>00315 validity = 300; |
|
276 <a name="l00316"></a>00316 entry.SetValidityPeriod(TTimeIntervalMinutes (validity)); |
|
277 <a name="l00317"></a>00317 cSchEntryInfoArray->AppendL(entry); |
|
278 <a name="l00318"></a>00318 |
|
279 <a name="l00319"></a>00319 <span class="comment">// Change the transient time based schedule</span> |
|
280 <a name="l00320"></a>00320 User::LeaveIfError(iScheduler.EditSchedule(ref.iHandle, *cSchEntryInfoArray)); |
|
281 <a name="l00321"></a>00321 |
|
282 <a name="l00322"></a>00322 CleanupStack::PopAndDestroy(2); <span class="comment">// data, CSchEntryInfoArray</span> |
|
283 <a name="l00323"></a>00323 |
|
284 <a name="l00324"></a>00324 <span class="comment">// Check if the tasks scheduled exist</span> |
|
285 <a name="l00325"></a>00325 TBool exists; |
|
286 <a name="l00326"></a>00326 <a class="code" href="class_c_task_schedule.html#3b047bd6e178cbc4964d69adb56e1945">DoesScheduledItemExistL</a>(ref, exists); |
|
287 <a name="l00327"></a>00327 <span class="keywordflow">if</span>(!exists) |
|
288 <a name="l00328"></a>00328 { |
|
289 <a name="l00329"></a>00329 User::Leave(KErrNotFound); |
|
290 <a name="l00330"></a>00330 } |
|
291 <a name="l00331"></a>00331 <span class="comment">// Wait for the task to fire and complete</span> |
|
292 <a name="l00332"></a>00332 iConsole->Printf(KTransientWait); |
|
293 <a name="l00333"></a>00333 <span class="keyword">const</span> TInt twentySecs = 20000000; |
|
294 <a name="l00334"></a>00334 User::After(twentySecs); <span class="comment">// pause for 20 seconds</span> |
|
295 <a name="l00335"></a>00335 |
|
296 <a name="l00336"></a>00336 iConsole->Printf(KDone); |
|
297 <a name="l00337"></a>00337 |
|
298 <a name="l00338"></a>00338 <span class="comment">// Transient schedules are deleted automatically once they are executed</span> |
|
299 <a name="l00339"></a>00339 <span class="comment">// i.e check for count to be zero in the function being called</span> |
|
300 <a name="l00340"></a>00340 <a class="code" href="class_c_task_schedule.html#3b047bd6e178cbc4964d69adb56e1945">DoesScheduledItemExistL</a>(ref, exists); |
|
301 <a name="l00341"></a>00341 <span class="keywordflow">if</span>(exists) |
|
302 <a name="l00342"></a>00342 { |
|
303 <a name="l00343"></a>00343 User::Leave(KErrGeneral); |
|
304 <a name="l00344"></a>00344 } |
|
305 <a name="l00345"></a>00345 } |
|
306 <a name="l00346"></a>00346 |
|
307 <a name="l00353"></a><a class="code" href="class_c_task_schedule.html#3b047bd6e178cbc4964d69adb56e1945">00353</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#3b047bd6e178cbc4964d69adb56e1945">CTaskSchedule::DoesScheduledItemExistL</a>(TSchedulerItemRef &aRef, TBool& aExists) |
|
308 <a name="l00354"></a>00354 <span class="comment">// Extract schedule references from the schedule server based on a filter.</span> |
|
309 <a name="l00355"></a>00355 { |
|
310 <a name="l00356"></a>00356 aExists = EFalse; |
|
311 <a name="l00357"></a>00357 CArrayFixFlat<TSchedulerItemRef>* CSchItemRefArray; |
|
312 <a name="l00358"></a>00358 |
|
313 <a name="l00359"></a>00359 CSchItemRefArray = <span class="keyword">new</span> CArrayFixFlat<TSchedulerItemRef>(3); |
|
314 <a name="l00360"></a>00360 CleanupStack::PushL(CSchItemRefArray); |
|
315 <a name="l00361"></a>00361 |
|
316 <a name="l00362"></a>00362 User::LeaveIfError(iScheduler.GetScheduleRefsL(*CSchItemRefArray, EAllSchedules)); |
|
317 <a name="l00363"></a>00363 |
|
318 <a name="l00364"></a>00364 TInt count = CSchItemRefArray->Count(); |
|
319 <a name="l00365"></a>00365 <span class="keywordflow">for</span>(TInt i = 0; i < count; i++) |
|
320 <a name="l00366"></a>00366 { |
|
321 <a name="l00367"></a>00367 <span class="comment">// Get a list of schedules created by this executable</span> |
|
322 <a name="l00368"></a>00368 <span class="keywordflow">if</span>(aRef.iHandle == (*CSchItemRefArray)[i].iHandle) |
|
323 <a name="l00369"></a>00369 { |
|
324 <a name="l00370"></a>00370 aExists = ETrue; |
|
325 <a name="l00371"></a>00371 iConsole->Printf(KExists); |
|
326 <a name="l00372"></a>00372 iConsole->Printf(KTask, count); |
|
327 <a name="l00373"></a>00373 } |
|
328 <a name="l00374"></a>00374 <span class="keywordflow">else</span> |
|
329 <a name="l00375"></a>00375 { |
|
330 <a name="l00376"></a>00376 iConsole->Printf(KOtherTask); |
|
331 <a name="l00377"></a>00377 } |
|
332 <a name="l00378"></a>00378 } |
|
333 <a name="l00379"></a>00379 |
|
334 <a name="l00380"></a>00380 CleanupStack::PopAndDestroy(); <span class="comment">// CSchItemRefArray</span> |
|
335 <a name="l00381"></a>00381 |
|
336 <a name="l00382"></a>00382 } |
|
337 <a name="l00383"></a>00383 |
|
338 <a name="l00395"></a><a class="code" href="class_c_task_schedule.html#0c3db205409436a0b47b3e11c9d3190f">00395</a> <span class="keywordtype">void</span> <a class="code" href="class_c_task_schedule.html#0c3db205409436a0b47b3e11c9d3190f">CTaskSchedule::DeleteSchedulesL</a>(TSchedulerItemRef &aRef, TScheduleFilter aFilter) |
|
339 <a name="l00396"></a>00396 { |
|
340 <a name="l00397"></a>00397 CArrayFixFlat<TSchedulerItemRef>* CSchItemRefArray; |
|
341 <a name="l00398"></a>00398 |
|
342 <a name="l00399"></a>00399 CSchItemRefArray = <span class="keyword">new</span> CArrayFixFlat<TSchedulerItemRef>(3); |
|
343 <a name="l00400"></a>00400 CleanupStack::PushL(CSchItemRefArray); |
|
344 <a name="l00401"></a>00401 |
|
345 <a name="l00402"></a>00402 User::LeaveIfError(iScheduler.GetScheduleRefsL(*CSchItemRefArray, aFilter)); |
|
346 <a name="l00403"></a>00403 |
|
347 <a name="l00404"></a>00404 TInt count = CSchItemRefArray->Count(); |
|
348 <a name="l00405"></a>00405 iConsole->Printf(KTask, count); |
|
349 <a name="l00406"></a>00406 |
|
350 <a name="l00407"></a>00407 <span class="keywordflow">for</span>(TInt i = 0; i < count; i++) |
|
351 <a name="l00408"></a>00408 { |
|
352 <a name="l00409"></a>00409 <span class="comment">// Check if the schedules are created by this exe or</span> |
|
353 <a name="l00410"></a>00410 <span class="comment">// some other exe</span> |
|
354 <a name="l00411"></a>00411 <span class="keywordflow">if</span>(aRef.iHandle == (*CSchItemRefArray)[i].iHandle) |
|
355 <a name="l00412"></a>00412 { |
|
356 <a name="l00413"></a>00413 <span class="comment">// Delete the tasks scheduled by us (this exe)</span> |
|
357 <a name="l00414"></a>00414 iConsole->Printf(KDeleteAllTasks); |
|
358 <a name="l00415"></a>00415 User::LeaveIfError(iScheduler.DeleteTask(aRef.iHandle)); |
|
359 <a name="l00416"></a>00416 <span class="comment">// Delete the schedules created by us (this exe)</span> |
|
360 <a name="l00417"></a>00417 iConsole->Printf(KDeleteAllSchedules); |
|
361 <a name="l00418"></a>00418 User::LeaveIfError(iScheduler.DeleteSchedule(aRef.iHandle)); |
|
362 <a name="l00419"></a>00419 |
|
363 <a name="l00420"></a>00420 iConsole->Printf(KPressAKey); |
|
364 <a name="l00421"></a>00421 iConsole->Getch(); |
|
365 <a name="l00422"></a>00422 |
|
366 <a name="l00423"></a>00423 } |
|
367 <a name="l00424"></a>00424 <span class="keywordflow">else</span> |
|
368 <a name="l00425"></a>00425 { |
|
369 <a name="l00426"></a>00426 <span class="comment">// Not deleting the tasks or schedules as,</span> |
|
370 <a name="l00427"></a>00427 <span class="comment">// they are not created by this exe</span> |
|
371 <a name="l00428"></a>00428 iConsole->Printf(KOtherTask); |
|
372 <a name="l00429"></a>00429 } |
|
373 <a name="l00430"></a>00430 } |
|
374 <a name="l00431"></a>00431 CleanupStack::PopAndDestroy(); <span class="comment">// CSchItemRefArray</span> |
|
375 <a name="l00432"></a>00432 |
|
376 <a name="l00433"></a>00433 } |
|
377 <a name="l00434"></a>00434 |
|
378 <a name="l00435"></a><a class="code" href="taskscheduler_8cpp.html#5fb473d4ee18739183215b04dcad6e12">00435</a> <span class="keywordtype">void</span> <a class="code" href="circularbuffer_8cpp.html#5fb473d4ee18739183215b04dcad6e12">MainL</a>() |
|
379 <a name="l00436"></a>00436 { |
|
380 <a name="l00437"></a>00437 <span class="comment">// Create an Active Scheduler to handle asychronous calls</span> |
|
381 <a name="l00438"></a>00438 CActiveScheduler* scheduler = <span class="keyword">new</span> (ELeave) CActiveScheduler; |
|
382 <a name="l00439"></a>00439 CleanupStack::PushL(scheduler); |
|
383 <a name="l00440"></a>00440 |
|
384 <a name="l00441"></a>00441 <span class="comment">// Install the active scheduler</span> |
|
385 <a name="l00442"></a>00442 CActiveScheduler::Install( scheduler ); |
|
386 <a name="l00443"></a>00443 <a class="code" href="class_c_task_schedule.html">CTaskSchedule</a>* app = <a class="code" href="class_c_task_schedule.html#d152b61017146041468ce89a4312ddf9">CTaskSchedule::NewLC</a>(); |
|
387 <a name="l00444"></a>00444 |
|
388 <a name="l00445"></a>00445 <span class="comment">// Connect and register with the task scheduler</span> |
|
389 <a name="l00446"></a>00446 app-><a class="code" href="class_c_task_schedule.html#c957da1838fe31cb3f7fe9f6a533f6c5">ConnectAndRegisterL</a>(); |
|
390 <a name="l00447"></a>00447 |
|
391 <a name="l00448"></a>00448 <span class="comment">// Create a persistent schedule and add tasks to it</span> |
|
392 <a name="l00449"></a>00449 app-><a class="code" href="class_c_task_schedule.html#5b7869136d2a8f1c625531ab1c12ef98">PersistentScheduleL</a>(); |
|
393 <a name="l00450"></a>00450 |
|
394 <a name="l00451"></a>00451 <span class="comment">// Create a transient schedule and add tasks to it</span> |
|
395 <a name="l00452"></a>00452 app-><a class="code" href="class_c_task_schedule.html#abfef5ace0331f83eb8cd4de511d3d7f">CreateTransientScheduleL</a>(); |
|
396 <a name="l00453"></a>00453 |
|
397 <a name="l00454"></a>00454 CleanupStack::PopAndDestroy(2); <span class="comment">// app, scheduler</span> |
|
398 <a name="l00455"></a>00455 |
|
399 <a name="l00456"></a>00456 } |
|
400 <a name="l00457"></a>00457 |
|
401 <a name="l00458"></a><a class="code" href="taskscheduler_8cpp.html#8b0fea7c5e4de0484888431020cf3ec9">00458</a> TInt <a class="code" href="dbllist_8cpp.html#0f358e9c4355138f629b8c4f37310295">E32Main</a>() |
|
402 <a name="l00459"></a>00459 { |
|
403 <a name="l00460"></a>00460 __UHEAP_MARK; |
|
404 <a name="l00461"></a>00461 CTrapCleanup* cleanup = CTrapCleanup::New(); |
|
405 <a name="l00462"></a>00462 <span class="keywordflow">if</span>(cleanup == NULL) |
|
406 <a name="l00463"></a>00463 { |
|
407 <a name="l00464"></a>00464 <span class="keywordflow">return</span> KErrNoMemory; |
|
408 <a name="l00465"></a>00465 } |
|
409 <a name="l00466"></a>00466 |
|
410 <a name="l00467"></a>00467 TRAPD(err, <a class="code" href="circularbuffer_8cpp.html#5fb473d4ee18739183215b04dcad6e12">MainL</a>()); |
|
411 <a name="l00468"></a>00468 <span class="keywordflow">if</span>(err != KErrNone) |
|
412 <a name="l00469"></a>00469 { |
|
413 <a name="l00470"></a>00470 User::Panic(_L(<span class="stringliteral">"Failed to complete"</span>),err); |
|
414 <a name="l00471"></a>00471 } |
|
415 <a name="l00472"></a>00472 <span class="keyword">delete</span> cleanup; |
|
416 <a name="l00473"></a>00473 |
|
417 <a name="l00474"></a>00474 __UHEAP_MARKEND; |
|
418 <a name="l00475"></a>00475 <span class="keywordflow">return</span> KErrNone; |
|
419 <a name="l00476"></a>00476 } |
|
420 </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 |
|
421 <a href="http://www.doxygen.org/index.html"> |
|
422 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.3 </small></address> |
|
423 </body> |
|
424 </html> |