1 /* |
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2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of a nested active object used to handle deletion |
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15 * of large number of messages by breaking them into smaller chunks |
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16 * |
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17 */ |
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18 |
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19 // Include Files |
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20 // |
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21 |
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22 |
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23 #include "nestedao.h" |
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24 #include "baseplugindelayedops.h" |
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25 #include "baseplugindelayedopsprivate.h" |
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26 |
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27 //Class CNestedAO |
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28 |
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29 // -------------------------------------------------------------------------- |
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30 // CNestedAO::NewL |
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31 // ------------ |
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32 CNestedAO* CNestedAO::NewL( MDeletionHandler& aDeletionHandler ) |
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33 { |
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34 CNestedAO* self = new(ELeave) CNestedAO( aDeletionHandler ); |
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35 CleanupStack::PushL( self ); |
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36 self->ConstructL(); |
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37 CleanupStack::Pop( self ); |
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38 return self; |
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39 } |
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40 // -------------------------------------------------------------------------- |
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41 // CNestedAO::CNestedAO |
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42 // ------------ |
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43 CNestedAO::CNestedAO( MDeletionHandler& aDeletionHandler ) |
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44 : CTimer( EPriorityIdle ), iDeletionHandler( aDeletionHandler ), iRc( KErrNone ) |
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45 { |
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46 } |
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47 // -------------------------------------------------------------------------- |
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48 // CNestedAO::ConstructL() |
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49 // ------------ |
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50 void CNestedAO::ConstructL() |
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51 { |
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52 CTimer::ConstructL(); |
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53 iNestedWait = new( ELeave ) CActiveSchedulerWait(); |
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54 CActiveScheduler::Add( this ); |
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55 } |
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56 // -------------------------------------------------------------------------- |
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57 // CNestedAO::~CNestedAO |
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58 // ------------ |
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59 CNestedAO::~CNestedAO() |
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60 { |
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61 Cancel(); |
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62 delete iNestedWait; |
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63 } |
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64 // -------------------------------------------------------------------------- |
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65 // CNestedAO::DeleteMessagesAsync |
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66 // Used to delete messages asynchronously |
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67 // Deleting a small number of messages at a time |
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68 // ------------ |
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69 void CNestedAO::DeleteMessagesAsync() |
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70 { |
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71 iDeletionIndex = 0; |
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72 After( KWaitIntervalInMicroSecs ); //to invoke RunL after 100 microseconds |
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73 iNestedWait->Start(); |
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74 } |
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75 // -------------------------------------------------------------------------- |
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76 // CNestedAO::DoCancel |
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77 // ------------ |
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78 void CNestedAO::DoCancel() |
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79 { |
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80 iRc = KErrCancel; |
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81 Stop(); |
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82 } |
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83 // -------------------------------------------------------------------------- |
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84 // CNestedAO::RunL |
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85 // ------------ |
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86 void CNestedAO::RunL() |
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87 { |
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88 iRc = iStatus.Int(); |
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89 if ( iStatus.Int() == KErrNone ) |
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90 { |
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91 TBool done = iDeletionHandler.DeleteMessagesInChunksL( iDeletionIndex ); |
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92 if( !done ) |
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93 { |
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94 //Increment deletionidex |
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95 iDeletionIndex+=KSizeOfChunk; |
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96 After( KWaitIntervalInMicroSecs ); |
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97 } |
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98 else |
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99 { |
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100 Stop(); |
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101 } |
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102 } |
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103 else |
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104 { |
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105 Stop(); |
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106 } |
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107 } |
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108 |
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109 // -------------------------------------------------------------------------- |
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110 // CNestedAO::Stop |
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111 // Stops the scheduler from running |
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112 // Called after all messages are processed |
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113 // or in error condition |
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114 // ------------ |
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115 void CNestedAO::Stop() |
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116 { |
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117 if( iNestedWait->IsStarted() ) |
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118 { |
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119 // Stop the nested active scheduler (flow-of-control will pick up immediately following the |
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120 // call to iWait.Start(). |
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121 iNestedWait->AsyncStop(); |
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122 } // end if |
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123 } |
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