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1 /* |
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2 * Copyright (c) 2006 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: Low disk space watcher |
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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 <e32base.h> |
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20 #include <mpxlog.h> |
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21 #include "mpxdiskspacewatcher.h" |
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22 #include "mpxdiskspacewatcherobserver.h" |
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23 |
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24 // CONSTANTS |
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25 const TInt KLowDiskThreshold = 131072 * 4; // 128k *4 |
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26 |
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27 // --------------------------------------------------------------------------- |
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28 // Constructor |
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29 // --------------------------------------------------------------------------- |
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30 // |
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31 CMPXDiskSpaceWatcher::CMPXDiskSpaceWatcher( RFs& aFs, TInt aDrive, |
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32 MMPXDiskSpaceObserver& aObs ) |
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33 : CActive( CActive::EPriorityHigh ), |
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34 iFs( aFs ), |
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35 iDriveToMonitor( aDrive ), |
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36 iObs( aObs ) |
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37 |
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38 { |
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39 CActiveScheduler::Add( this ); |
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40 } |
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41 |
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42 |
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43 // --------------------------------------------------------------------------- |
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44 // ConstructL |
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45 // --------------------------------------------------------------------------- |
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46 // |
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47 void CMPXDiskSpaceWatcher::ConstructL() |
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48 { |
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49 } |
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50 |
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51 |
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52 // --------------------------------------------------------------------------- |
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53 // Two-Phased Constructor |
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54 // --------------------------------------------------------------------------- |
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55 // |
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56 CMPXDiskSpaceWatcher* CMPXDiskSpaceWatcher::NewL( RFs& aFs, TInt aDrive, |
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57 MMPXDiskSpaceObserver& aObs ) |
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58 { |
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59 CMPXDiskSpaceWatcher* self = new( ELeave ) CMPXDiskSpaceWatcher( aFs, |
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60 aDrive, |
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61 aObs ); |
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62 CleanupStack::PushL( self ); |
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63 self->ConstructL(); |
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64 CleanupStack::Pop( self ); |
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65 return self; |
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66 } |
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67 |
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68 // --------------------------------------------------------------------------- |
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69 // destructor |
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70 // --------------------------------------------------------------------------- |
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71 // |
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72 CMPXDiskSpaceWatcher::~CMPXDiskSpaceWatcher() |
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73 { |
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74 Cancel(); |
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75 } |
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76 |
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77 // --------------------------------------------------------------------------- |
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78 // Start the watcher |
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79 // --------------------------------------------------------------------------- |
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80 // |
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81 void CMPXDiskSpaceWatcher::StartL() |
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82 { |
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83 TVolumeInfo volInfo; |
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84 TInt err = iFs.Volume( volInfo, iDriveToMonitor ); |
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85 |
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86 // Only start if the disk is actually working |
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87 // |
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88 if (!IsActive() && err == KErrNone ) |
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89 { |
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90 MPX_DEBUG2("CMPXDiskSpaceWatcher::Start monitor drive %d", |
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91 iDriveToMonitor); |
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92 iFs.NotifyDiskSpace( KLowDiskThreshold, iDriveToMonitor, iStatus ); //lint !e747 |
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93 SetActive(); |
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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 // Check if the disk is low on memory |
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99 // --------------------------------------------------------------------------- |
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100 // |
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101 TBool CMPXDiskSpaceWatcher::IsLowOnDisk() |
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102 { |
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103 TVolumeInfo volInfo; |
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104 TInt err = iFs.Volume( volInfo, iDriveToMonitor ); |
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105 |
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106 MPX_DEBUG3("CMPXDiskSpaceWatcher::IsLowOnDisk disk %i free %i", |
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107 iDriveToMonitor, volInfo.iFree ); |
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108 |
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109 // Can only trust disk space amount if we could get volume info |
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110 // |
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111 if( (volInfo.iFree < KLowDiskThreshold) && err == KErrNone ) |
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112 { |
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113 MPX_DEBUG1("LOW DISK SPACE"); |
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114 return ETrue; |
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115 } |
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116 else |
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117 { |
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118 MPX_DEBUG1("DISK SPACE OK"); |
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119 return EFalse; |
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120 } |
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121 |
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122 } |
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123 |
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124 // --------------------------------------------------------------------------- |
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125 // Gets the currently monitored drive number |
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126 // --------------------------------------------------------------------------- |
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127 // |
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128 TInt CMPXDiskSpaceWatcher::CurrentDrive() |
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129 { |
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130 return iDriveToMonitor; |
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131 } |
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132 |
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133 // --------------------------------------------------------------------------- |
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134 // Cancel the disk notification |
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135 // --------------------------------------------------------------------------- |
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136 // |
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137 void CMPXDiskSpaceWatcher::DoCancel() |
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138 { |
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139 // Cancel the disk space monitoring |
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140 iFs.NotifyDiskSpaceCancel(); |
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141 } |
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142 |
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143 // --------------------------------------------------------------------------- |
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144 // Active Object callback |
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145 // --------------------------------------------------------------------------- |
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146 // |
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147 void CMPXDiskSpaceWatcher::RunL() |
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148 { |
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149 // Callback to observer about which drive is low on disk space |
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150 // |
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151 iObs.HandleLowDiskEvent( iDriveToMonitor ); |
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152 } |
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153 |
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154 // END OF FILE |