camerauis/cameraapp/generic/src/CamMemoryMonitor.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 16:18:56 +0200
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permissions -rw-r--r--
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/*
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* Copyright (c) 2007-2009 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:  Class that monitors free memory and attempts to free it if necessary
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*
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*/
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#include "CamMemoryMonitor.h"
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#include <hal.h>
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#include <hal_data.h>
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#include <AknGlobalNote.h>
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#include <StringLoader.h>
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#include <vgacamsettings.rsg>
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#include "CamAppUi.h"
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#include "CamAppController.h"
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#include "camlogging.h"
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const static TInt KMemoryCheckInterval = 10*1000*1000;
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const static TInt KNeededMemoryLevel = 20*1024*1024;
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const static TInt KCriticalMemoryLevel = 18*1024*1024;
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::NewL
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// ---------------------------------------------------------------------------
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//
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CCamMemoryMonitor* CCamMemoryMonitor::NewL(CCamAppUi* aAppUi, CCamAppController* aController)
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    {
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    CCamMemoryMonitor* self = new (ELeave) CCamMemoryMonitor( aAppUi, aController );
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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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// CCamMemoryMonitor::~CCamMemoryMonitor
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// ---------------------------------------------------------------------------
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//
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CCamMemoryMonitor::~CCamMemoryMonitor()
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::~CCamMemoryMonitor") )
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    if ( iMemoryCheckTimer )
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        {
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        iMemoryCheckTimer->Cancel();
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        delete iMemoryCheckTimer;
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        }
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    PRINT( _L("Camera <= CCamMemoryMonitor::~CCamMemoryMonitor") )
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    }
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::StartMonitoring
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// ---------------------------------------------------------------------------
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//
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void CCamMemoryMonitor::StartMonitoring( TInt aLimit, TInt aRequestAmount )
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::StartMonitoring") )
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    if ( !iMemoryCheckTimer->IsActive() )
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        {
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        iLimit = aLimit;
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        iRequestAmount = aRequestAmount;
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        iMemoryCheckTimer->Start( KMemoryCheckInterval, KMemoryCheckInterval,
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                              TCallBack( MemoryCheck, this ) );
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        }
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    PRINT( _L("Camera <= CCamMemoryMonitor::StartMonitoring") )
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    }
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::StartMonitoring
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// ---------------------------------------------------------------------------
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//
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void CCamMemoryMonitor::StartMonitoring()
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::StartMonitoring") )
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    if ( !iMemoryCheckTimer->IsActive() )
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        {
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        iMemoryCheckTimer->Start( KMemoryCheckInterval, KMemoryCheckInterval,
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                              TCallBack( MemoryCheck, this ) );
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        }
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    PRINT( _L("Camera <= CCamMemoryMonitor::StartMonitoring") )
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    }
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::StopMonitoring
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// ---------------------------------------------------------------------------
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//
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void CCamMemoryMonitor::StopMonitoring()
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::StopMonitoring") )
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    iMemoryCheckTimer->Cancel();
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    PRINT( _L("Camera <= CCamMemoryMonitor::StopMonitoring") )
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    }
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::CheckAndRequestMemoryL
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// ---------------------------------------------------------------------------
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//
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TInt CCamMemoryMonitor::CheckAndRequestMemoryL( TInt aLimit, TInt aRequestAmount, TBool aShowNote )
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::CheckAndRequestMemoryL") )
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    if ( IsActive() )
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    {
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        return KErrNone;
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parents:
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   118
    }
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parents:
diff changeset
   119
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   120
    TInt memoryLeft = 0;
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   121
    TInt errorCode = KErrNone;
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parents:
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   122
    HAL::Get( HALData::EMemoryRAMFree, memoryLeft );
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   123
    if ( memoryLeft < aLimit )
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parents:
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   124
        {
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   125
        PRINT( _L("Camera <> CCamMemoryMonitor::CheckAndRequestMemoryL memory below limit, requesting") )
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   126
        HBufC* freeMemText = NULL;
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   127
        CAknGlobalNote* note = NULL;
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        TInt noteId = 0;
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   129
        if ( aShowNote )
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parents:
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   130
            {
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   131
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   132
            freeMemText = StringLoader::LoadL( R_NOTE_TEXT_FREE_MEMORY );
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            CleanupStack::PushL( freeMemText );
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parents:
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   134
            // show error note
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   135
            note = CAknGlobalNote::NewL();
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parents:
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   136
            CleanupStack::PushL( note );
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   137
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   138
            note->SetTextProcessing( ETrue );
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   139
            note->SetPriority(CActive::EPriorityHigh);
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   140
            noteId = note->ShowNoteL(EAknGlobalWaitNote, *freeMemText);
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   141
            }
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   142
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   143
        User::LeaveIfError( iOomMonitor.Connect() );
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   144
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   145
        errorCode = iOomMonitor.RequestFreeMemory( aRequestAmount );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   146
        if ( errorCode != KErrNone )
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parents:
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   147
            {
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   148
            // try one more time
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   149
            PRINT( _L("Camera <> CCamMemoryMonitor::CheckAndRequestMemoryL request returned with error, let's try one more time") )
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parents:
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   150
            errorCode = iOomMonitor.RequestFreeMemory( aRequestAmount );
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   151
            }
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        iOomMonitor.Close();
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   153
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parents:
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   154
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   155
        if ( aShowNote )
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parents:
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   156
            {
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            note->CancelNoteL(noteId);
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parents:
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   158
            CleanupStack::PopAndDestroy( 2 ); // freeMemText & note
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parents:
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   159
            }
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parents:
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   160
        }
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parents:
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   161
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   162
    PRINT1( _L("Camera <= CCamMemoryMonitor::CheckAndRequestMemoryL returning %d"), errorCode )
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parents:
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   163
    return errorCode;
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parents:
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   164
    }
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parents:
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   165
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   166
// ---------------------------------------------------------------------------
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   167
// CCamMemoryMonitor::CheckAndRequestMemoryL
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   168
// ---------------------------------------------------------------------------
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   169
//
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   170
TInt CCamMemoryMonitor::CheckAndRequestMemoryL( TBool aShowNote )
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   171
    {
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   172
    return CheckAndRequestMemoryL( KCriticalMemoryLevel, KNeededMemoryLevel, aShowNote );
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   173
    }
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parents:
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   174
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// ---------------------------------------------------------------------------
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   176
// CCamMemoryMonitor::RunL
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   177
// ---------------------------------------------------------------------------
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   178
//
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   179
void CCamMemoryMonitor::RunL()
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   180
    {
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   181
    PRINT( _L("Camera => CCamMemoryMonitor::RunL") )
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   182
    iOomMonitor.Close();
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parents:
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   183
    PRINT( _L("Camera <= CCamMemoryMonitor::RunL") )
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parents:
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   184
    }
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parents:
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   185
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parents:
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   186
// ---------------------------------------------------------------------------
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parents:
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   187
// CCamMemoryMonitor::DoCancel
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parents:
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   188
// ---------------------------------------------------------------------------
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parents:
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   189
//
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parents:
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   190
void CCamMemoryMonitor::DoCancel()
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parents:
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   191
    {
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   192
    PRINT( _L("Camera => CCamMemoryMonitor::DoCancel") )
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parents:
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   193
    if ( IsActive() )
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parents:
diff changeset
   194
        {
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   195
        iOomMonitor.CancelRequestFreeMemory();
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parents:
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   196
        iOomMonitor.Close();
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parents:
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   197
        }
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parents:
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   198
    PRINT( _L("Camera <= CCamMemoryMonitor::DoCancel") )
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parents:
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   199
    }
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   200
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   201
// ---------------------------------------------------------------------------
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   202
// CCamMemoryMonitor::CCamMemoryMonitor
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parents:
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   203
// ---------------------------------------------------------------------------
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parents:
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   204
//
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   205
CCamMemoryMonitor::CCamMemoryMonitor(CCamAppUi* aAppUi, CCamAppController* aController)
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parents:
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   206
: CActive( CActive::EPriorityIdle ),
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   207
  iLimit( KCriticalMemoryLevel ), iRequestAmount( KNeededMemoryLevel ),
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parents:
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   208
  iAppUi( aAppUi ), iController( aController )
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parents:
diff changeset
   209
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parents:
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   210
    {
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parents:
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   211
    PRINT( _L("Camera => CCamMemoryMonitor::CCamMemoryMonitor") )
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parents:
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   212
    CActiveScheduler::Add(this);
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parents:
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   213
    PRINT( _L("Camera <= CCamMemoryMonitor::CCamMemoryMonitor") )
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parents:
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   214
    }
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parents:
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   215
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parents:
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   216
// ---------------------------------------------------------------------------
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parents:
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   217
// CCamMemoryMonitor::ConstructL
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parents:
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   218
// ---------------------------------------------------------------------------
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parents:
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   219
//
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   220
void CCamMemoryMonitor::ConstructL()
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parents:
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   221
    {
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   222
    PRINT( _L("Camera => CCamMemoryMonitor::ConstructL") )
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   223
    iMemoryCheckTimer = CPeriodic::New( CActive::EPriorityIdle );
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parents:
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   224
    PRINT( _L("Camera <= CCamMemoryMonitor::ConstructL") )
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parents:
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   225
    }
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parents:
diff changeset
   226
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parents:
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   227
// ---------------------------------------------------------------------------
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parents:
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   228
// CCamMemoryMonitor::MemoryCheck
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parents:
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   229
// ---------------------------------------------------------------------------
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parents:
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   230
//
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   231
TInt CCamMemoryMonitor::MemoryCheck( TAny* aPtr )
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parents:
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   232
    {
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parents:
diff changeset
   233
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parents:
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    PRINT( _L("Camera => CCamMemoryMonitor::MemoryCheck") )
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    CCamMemoryMonitor* self = static_cast<CCamMemoryMonitor*>( aPtr );
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    self->CheckMemory();
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    PRINT( _L("Camera <= CCamMemoryMonitor::MemoryCheck") )
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    return KErrNone;
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    }
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// ---------------------------------------------------------------------------
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// CCamMemoryMonitor::CheckMemory
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// ---------------------------------------------------------------------------
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//
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void CCamMemoryMonitor::CheckMemory()
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    {
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    PRINT( _L("Camera => CCamMemoryMonitor::CheckMemory") )
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    if ( IsActive() )
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        {
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        PRINT( _L("Camera <= CCamMemoryMonitor::CheckMemory already requesting memory") )
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        return;
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        }
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    if ( iAppUi->CurrentViewState() == ECamViewStatePreCapture &&
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         iController->CurrentOperation() == ECamNoOperation &&
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         !iAppUi->AppInBackground( EFalse ) )
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        {
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        PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory checking memory") )
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        TInt memoryLeft = 0;
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        HAL::Get( HALData::EMemoryRAMFree, memoryLeft );
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        if ( memoryLeft < iLimit )
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            {
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            TInt err =  iOomMonitor.Connect();
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            if ( !err )
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                {
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                PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory requesting memory") )
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                iOomMonitor.RequestFreeMemory( iRequestAmount, iStatus );
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                SetActive();
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                }
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            else
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                {
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                PRINT1( _L("Camera <> CCamMemoryMonitor::CheckMemory failed to connect to OoMMonitor err=%d"), err )
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                }
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            }
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        else
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            {
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            PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory no need for memory request") )
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            }
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        }
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    else
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        {
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        PRINT( _L("Camera <> CCamMemoryMonitor::CheckMemory not in correct state, not checking memory") )
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        }
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    PRINT( _L("Camera <= CCamMemoryMonitor::CheckMemory") )
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    }