--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraapp/generic/src/CamMemoryMonitor.cpp Thu Jan 07 16:18:56 2010 +0200
@@ -0,0 +1,288 @@
+/*
+* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Class that monitors free memory and attempts to free it if necessary
+*
+*/
+
+#include "CamMemoryMonitor.h"
+
+
+#include <hal.h>
+#include <hal_data.h>
+#include <AknGlobalNote.h>
+#include <StringLoader.h>
+#include <vgacamsettings.rsg>
+#include "CamAppUi.h"
+#include "CamAppController.h"
+#include "camlogging.h"
+
+
+const static TInt KMemoryCheckInterval = 10*1000*1000;
+const static TInt KNeededMemoryLevel = 20*1024*1024;
+const static TInt KCriticalMemoryLevel = 18*1024*1024;
+
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::NewL
+// ---------------------------------------------------------------------------
+//
+CCamMemoryMonitor* CCamMemoryMonitor::NewL(CCamAppUi* aAppUi, CCamAppController* aController)
+ {
+ CCamMemoryMonitor* self = new (ELeave) CCamMemoryMonitor( aAppUi, aController );
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ CleanupStack::Pop(); // self;
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::~CCamMemoryMonitor
+// ---------------------------------------------------------------------------
+//
+CCamMemoryMonitor::~CCamMemoryMonitor()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::~CCamMemoryMonitor") )
+ if ( iMemoryCheckTimer )
+ {
+ iMemoryCheckTimer->Cancel();
+ delete iMemoryCheckTimer;
+ }
+ PRINT( _L("Camera <= CCamMemoryMonitor::~CCamMemoryMonitor") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::StartMonitoring
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::StartMonitoring( TInt aLimit, TInt aRequestAmount )
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::StartMonitoring") )
+ if ( !iMemoryCheckTimer->IsActive() )
+ {
+ iLimit = aLimit;
+ iRequestAmount = aRequestAmount;
+ iMemoryCheckTimer->Start( KMemoryCheckInterval, KMemoryCheckInterval,
+ TCallBack( MemoryCheck, this ) );
+ }
+ PRINT( _L("Camera <= CCamMemoryMonitor::StartMonitoring") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::StartMonitoring
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::StartMonitoring()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::StartMonitoring") )
+ if ( !iMemoryCheckTimer->IsActive() )
+ {
+ iMemoryCheckTimer->Start( KMemoryCheckInterval, KMemoryCheckInterval,
+ TCallBack( MemoryCheck, this ) );
+ }
+ PRINT( _L("Camera <= CCamMemoryMonitor::StartMonitoring") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::StopMonitoring
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::StopMonitoring()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::StopMonitoring") )
+ iMemoryCheckTimer->Cancel();
+ PRINT( _L("Camera <= CCamMemoryMonitor::StopMonitoring") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::CheckAndRequestMemoryL
+// ---------------------------------------------------------------------------
+//
+TInt CCamMemoryMonitor::CheckAndRequestMemoryL( TInt aLimit, TInt aRequestAmount, TBool aShowNote )
+ {
+
+ PRINT( _L("Camera => CCamMemoryMonitor::CheckAndRequestMemoryL") )
+ if ( IsActive() )
+ {
+ return KErrNone;
+ }
+
+ TInt memoryLeft = 0;
+ TInt errorCode = KErrNone;
+ HAL::Get( HALData::EMemoryRAMFree, memoryLeft );
+ if ( memoryLeft < aLimit )
+ {
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckAndRequestMemoryL memory below limit, requesting") )
+ HBufC* freeMemText = NULL;
+ CAknGlobalNote* note = NULL;
+ TInt noteId = 0;
+ if ( aShowNote )
+ {
+
+ freeMemText = StringLoader::LoadL( R_NOTE_TEXT_FREE_MEMORY );
+ CleanupStack::PushL( freeMemText );
+ // show error note
+ note = CAknGlobalNote::NewL();
+ CleanupStack::PushL( note );
+
+ note->SetTextProcessing( ETrue );
+ note->SetPriority(CActive::EPriorityHigh);
+ noteId = note->ShowNoteL(EAknGlobalWaitNote, *freeMemText);
+ }
+
+ User::LeaveIfError( iOomMonitor.Connect() );
+
+ errorCode = iOomMonitor.RequestFreeMemory( aRequestAmount );
+ if ( errorCode != KErrNone )
+ {
+ // try one more time
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckAndRequestMemoryL request returned with error, let's try one more time") )
+ errorCode = iOomMonitor.RequestFreeMemory( aRequestAmount );
+ }
+ iOomMonitor.Close();
+
+
+ if ( aShowNote )
+ {
+ note->CancelNoteL(noteId);
+ CleanupStack::PopAndDestroy( 2 ); // freeMemText & note
+ }
+ }
+
+ PRINT1( _L("Camera <= CCamMemoryMonitor::CheckAndRequestMemoryL returning %d"), errorCode )
+ return errorCode;
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::CheckAndRequestMemoryL
+// ---------------------------------------------------------------------------
+//
+TInt CCamMemoryMonitor::CheckAndRequestMemoryL( TBool aShowNote )
+ {
+ return CheckAndRequestMemoryL( KCriticalMemoryLevel, KNeededMemoryLevel, aShowNote );
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::RunL
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::RunL()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::RunL") )
+ iOomMonitor.Close();
+ PRINT( _L("Camera <= CCamMemoryMonitor::RunL") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::DoCancel
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::DoCancel()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::DoCancel") )
+ if ( IsActive() )
+ {
+ iOomMonitor.CancelRequestFreeMemory();
+ iOomMonitor.Close();
+ }
+ PRINT( _L("Camera <= CCamMemoryMonitor::DoCancel") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::CCamMemoryMonitor
+// ---------------------------------------------------------------------------
+//
+CCamMemoryMonitor::CCamMemoryMonitor(CCamAppUi* aAppUi, CCamAppController* aController)
+: CActive( CActive::EPriorityIdle ),
+ iLimit( KCriticalMemoryLevel ), iRequestAmount( KNeededMemoryLevel ),
+ iAppUi( aAppUi ), iController( aController )
+
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::CCamMemoryMonitor") )
+ CActiveScheduler::Add(this);
+ PRINT( _L("Camera <= CCamMemoryMonitor::CCamMemoryMonitor") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::ConstructL()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::ConstructL") )
+ iMemoryCheckTimer = CPeriodic::New( CActive::EPriorityIdle );
+ PRINT( _L("Camera <= CCamMemoryMonitor::ConstructL") )
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::MemoryCheck
+// ---------------------------------------------------------------------------
+//
+TInt CCamMemoryMonitor::MemoryCheck( TAny* aPtr )
+ {
+
+ PRINT( _L("Camera => CCamMemoryMonitor::MemoryCheck") )
+ CCamMemoryMonitor* self = static_cast<CCamMemoryMonitor*>( aPtr );
+
+ self->CheckMemory();
+
+ PRINT( _L("Camera <= CCamMemoryMonitor::MemoryCheck") )
+ return KErrNone;
+ }
+
+// ---------------------------------------------------------------------------
+// CCamMemoryMonitor::CheckMemory
+// ---------------------------------------------------------------------------
+//
+void CCamMemoryMonitor::CheckMemory()
+ {
+ PRINT( _L("Camera => CCamMemoryMonitor::CheckMemory") )
+ if ( IsActive() )
+ {
+ PRINT( _L("Camera <= CCamMemoryMonitor::CheckMemory already requesting memory") )
+ return;
+ }
+
+ if ( iAppUi->CurrentViewState() == ECamViewStatePreCapture &&
+ iController->CurrentOperation() == ECamNoOperation &&
+ !iAppUi->AppInBackground( EFalse ) )
+ {
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory checking memory") )
+ TInt memoryLeft = 0;
+ HAL::Get( HALData::EMemoryRAMFree, memoryLeft );
+ if ( memoryLeft < iLimit )
+ {
+ TInt err = iOomMonitor.Connect();
+ if ( !err )
+ {
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory requesting memory") )
+ iOomMonitor.RequestFreeMemory( iRequestAmount, iStatus );
+ SetActive();
+ }
+ else
+ {
+ PRINT1( _L("Camera <> CCamMemoryMonitor::CheckMemory failed to connect to OoMMonitor err=%d"), err )
+ }
+ }
+ else
+ {
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory no need for memory request") )
+ }
+ }
+ else
+ {
+ PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory not in correct state, not checking memory") )
+ }
+
+ PRINT( _L("Camera <= CCamMemoryMonitor::CheckMemory") )
+ }