author | Simon Howkins <simonh@symbian.org> |
Thu, 18 Nov 2010 13:26:55 +0000 | |
branch | RCL_3 |
changeset 69 | 71775bb0f6c0 |
parent 9 | bee149131e4b |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Low disk space watcher |
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* |
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*/ |
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|
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|
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#include <e32base.h> |
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#include <mpxlog.h> |
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#include "mpxdiskspacewatcher.h" |
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#include "mpxdiskspacewatcherobserver.h" |
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|
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// CONSTANTS |
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const TInt KLowDiskThreshold = 131072 * 4; // 128k *4 |
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|
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// --------------------------------------------------------------------------- |
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// Constructor |
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// --------------------------------------------------------------------------- |
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// |
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CMPXDiskSpaceWatcher::CMPXDiskSpaceWatcher( RFs& aFs, TInt aDrive, |
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MMPXDiskSpaceObserver& aObs ) |
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: CActive( CActive::EPriorityHigh ), |
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iFs( aFs ), |
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iDriveToMonitor( aDrive ), |
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iObs( aObs ) |
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|
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{ |
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CActiveScheduler::Add( this ); |
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} |
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|
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// --------------------------------------------------------------------------- |
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// ConstructL |
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// --------------------------------------------------------------------------- |
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// |
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void CMPXDiskSpaceWatcher::ConstructL() |
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{ |
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} |
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// --------------------------------------------------------------------------- |
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// Two-Phased Constructor |
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// --------------------------------------------------------------------------- |
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// |
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CMPXDiskSpaceWatcher* CMPXDiskSpaceWatcher::NewL( RFs& aFs, TInt aDrive, |
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MMPXDiskSpaceObserver& aObs ) |
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{ |
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CMPXDiskSpaceWatcher* self = new( ELeave ) CMPXDiskSpaceWatcher( aFs, |
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aDrive, |
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aObs ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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// --------------------------------------------------------------------------- |
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// destructor |
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// --------------------------------------------------------------------------- |
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// |
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CMPXDiskSpaceWatcher::~CMPXDiskSpaceWatcher() |
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{ |
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Cancel(); |
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} |
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// --------------------------------------------------------------------------- |
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// Start the watcher |
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// --------------------------------------------------------------------------- |
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// |
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void CMPXDiskSpaceWatcher::StartL() |
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{ |
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TVolumeInfo volInfo; |
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TInt err = iFs.Volume( volInfo, iDriveToMonitor ); |
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|
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// Only start if the disk is actually working |
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// |
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if (!IsActive() && err == KErrNone ) |
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{ |
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MPX_DEBUG2("CMPXDiskSpaceWatcher::Start monitor drive %d", |
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iDriveToMonitor); |
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iFs.NotifyDiskSpace( KLowDiskThreshold, iDriveToMonitor, iStatus ); //lint !e747 |
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SetActive(); |
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} |
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} |
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// --------------------------------------------------------------------------- |
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// Check if the disk is low on memory |
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// --------------------------------------------------------------------------- |
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// |
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TBool CMPXDiskSpaceWatcher::IsLowOnDisk() |
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{ |
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TVolumeInfo volInfo; |
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TInt err = iFs.Volume( volInfo, iDriveToMonitor ); |
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MPX_DEBUG3("CMPXDiskSpaceWatcher::IsLowOnDisk disk %i free %i", |
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iDriveToMonitor, volInfo.iFree ); |
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// Can only trust disk space amount if we could get volume info |
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// |
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if( (volInfo.iFree < KLowDiskThreshold) && err == KErrNone ) |
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{ |
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MPX_DEBUG1("LOW DISK SPACE"); |
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return ETrue; |
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} |
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else |
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{ |
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MPX_DEBUG1("DISK SPACE OK"); |
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return EFalse; |
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} |
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|
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} |
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|
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// --------------------------------------------------------------------------- |
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// Gets the currently monitored drive number |
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// --------------------------------------------------------------------------- |
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// |
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TInt CMPXDiskSpaceWatcher::CurrentDrive() |
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{ |
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return iDriveToMonitor; |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Cancel the disk notification |
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// --------------------------------------------------------------------------- |
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// |
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void CMPXDiskSpaceWatcher::DoCancel() |
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{ |
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// Cancel the disk space monitoring |
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iFs.NotifyDiskSpaceCancel(); |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Active Object callback |
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// --------------------------------------------------------------------------- |
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// |
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void CMPXDiskSpaceWatcher::RunL() |
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{ |
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// Callback to observer about which drive is low on disk space |
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//Check whether the current disk is low on disk space in Mass Storage mode. |
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// |
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if (IsLowOnDisk()) |
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{ |
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iObs.HandleLowDiskEvent( iDriveToMonitor ); |
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} |
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} |
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|
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// END OF FILE |