1 /* |
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2 * Copyright (c) 2004 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: Performs disk space watching. |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <f32file.h> |
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20 |
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21 #include "irdebug.h" |
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22 #include "irdiskspacewatcher.h" |
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23 #include "irdiskspacesession.h" |
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24 |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // C++ default constructor can NOT contain any code, that might leave. |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 CIRDiskSpaceWatcher::CIRDiskSpaceWatcher( const TInt64& aCriticalLevel, |
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31 MIRDiskSpaceWatcherObserver& aDiskSpaceWatcherObserver ) : |
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32 iCriticalLevel( aCriticalLevel ), |
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33 iObserver ( aDiskSpaceWatcherObserver ) |
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34 { |
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35 } |
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36 |
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37 // --------------------------------------------------------------------------- |
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38 // EPOC default constructor can leave. |
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39 // --------------------------------------------------------------------------- |
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40 // |
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41 void CIRDiskSpaceWatcher::ConstructL() |
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42 { |
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43 User::LeaveIfError(iFs.Connect()); |
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44 } |
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45 |
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46 |
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47 // --------------------------------------------------------------------------- |
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48 // Two-phased constructor. |
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49 // --------------------------------------------------------------------------- |
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50 // |
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51 CIRDiskSpaceWatcher* CIRDiskSpaceWatcher::NewL( const TInt64& aCriticalLevel, |
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52 MIRDiskSpaceWatcherObserver& aDiskSpaceWatcherObserver ) |
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53 |
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54 { |
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55 CIRDiskSpaceWatcher* self = new( ELeave ) CIRDiskSpaceWatcher( aCriticalLevel, |
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56 aDiskSpaceWatcherObserver ); |
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57 |
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58 CleanupStack::PushL( self ); |
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59 self->ConstructL(); |
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60 CleanupStack::Pop(self); |
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61 |
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62 return self; |
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63 } |
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64 |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // Destructor |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 CIRDiskSpaceWatcher::~CIRDiskSpaceWatcher() |
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71 { |
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72 iDiskSpaceSessions.ResetAndDestroy(); |
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73 iDiskSpaceSessions.Close(); |
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74 iFs.Close(); |
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75 } |
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76 |
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77 |
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78 // --------------------------------------------------------------------------- |
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79 // Returns ETrue if below the critical level in defined disk, otherwise EFalse |
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80 // --------------------------------------------------------------------------- |
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81 // |
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82 TBool CIRDiskSpaceWatcher::IsBelowCriticalLevel( |
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83 const TDriveNumber& aDriveNumber ) const |
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84 { |
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85 TBool returnValue = EFalse; |
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86 |
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87 if ( iDiskSpaceSessions.Count() > 0 ) |
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88 { |
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89 CIRDiskSpaceSession* session = iDiskSpaceSessions[0]; |
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90 returnValue = session->IsBelowCriticalLevel( aDriveNumber ); |
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91 } |
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92 |
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93 return returnValue; |
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94 } |
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95 |
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96 |
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97 // --------------------------------------------------------------------------- |
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98 // CIRDiskSpaceWatcher::StartObservingDriveL |
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99 // --------------------------------------------------------------------------- |
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100 // |
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101 void CIRDiskSpaceWatcher::StartObservingDriveL( |
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102 const TDriveNumber& aDriveNumber ) |
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103 { |
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104 TBool found = EFalse; |
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105 |
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106 for ( TInt i = 0 ; i < iDiskSpaceSessions.Count() ; i++ ) |
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107 { |
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108 CIRDiskSpaceSession* session = iDiskSpaceSessions[i]; |
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109 if ( session->DriveNumber() == aDriveNumber ) |
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110 { |
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111 session->SetObserverCount( session->ObserverCount() + 1 ); |
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112 found = ETrue; |
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113 /*lint -save -e960 (Note -- Violates MISRA Required Rule 58, non-switch break used)*/ |
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114 break; |
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115 /*lint -restore*/ |
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116 } |
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117 } |
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118 if ( !found ) |
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119 { |
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120 CIRDiskSpaceSession* session = CIRDiskSpaceSession::NewL( *this, |
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121 aDriveNumber, iCriticalLevel, iFs ); |
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122 session->SetObserverCount( 1 ); |
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123 iDiskSpaceSessions.Append( session ); |
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124 } |
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125 } |
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126 |
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127 |
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128 // --------------------------------------------------------------------------- |
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129 // CIRDiskSpaceWatcher::StopObservingDrive |
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130 // --------------------------------------------------------------------------- |
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131 // |
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132 void CIRDiskSpaceWatcher::StopObservingDrive( |
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133 const TDriveNumber& aDriveNumber ) |
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134 { |
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135 for ( TInt i = 0 ; i < iDiskSpaceSessions.Count() ; i++ ) |
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136 { |
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137 CIRDiskSpaceSession* session = iDiskSpaceSessions[i]; |
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138 if ( session->DriveNumber() == aDriveNumber ) |
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139 { |
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140 session->SetObserverCount( session->ObserverCount() - 1 ); |
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141 if ( session->ObserverCount() == 0 ) |
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142 { |
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143 iDiskSpaceSessions.Remove( i ); |
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144 delete session; |
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145 session = NULL; |
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146 } |
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147 /*lint -save -e960 (Note -- Violates MISRA Required Rule 58, non-switch break used)*/ |
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148 break; |
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149 /*lint -restore*/ |
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150 } |
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151 } |
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152 |
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153 } |
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154 |
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155 |
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156 // --------------------------------------------------------------------------- |
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157 // From class MIRDiskSpaceWatcherObserver. |
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158 // CIRDiskSpaceWatcher::NotifyLowDiskSpaceL |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 void CIRDiskSpaceWatcher::NotifyLowDiskSpaceL() |
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162 { |
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163 IRRDEBUG2("CIRDiskSpaceWatcher::NotifyLowDiskSpaceL - Phone LOW MEMORY detected", KNullDesC); |
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164 iObserver.NotifyLowDiskSpaceL(); |
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165 } |
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