1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef CXEMEMORYMONITOR_H

    19 #define CXEMEMORYMONITOR_H

    20 

    21 #include <QObject>

    22 

    23 class CxeFeatureManager;

    24 class CxeMemoryMonitorPrivate;

    25 

    26 /*!

    27 * Memory monitor class.

    28 * Memory monitor requests a pre-defined value of startup memory

    29 * at the time it is created, and throws error if it cannot get

    30 * enough memory freed. After creating, it can be set to monitor

    31 * free memory and try to keep it above pre-defined level.

    32 * Pre-defined levels are read from Feature Manager.

    33 */

    34 class CxeMemoryMonitor : public QObject

    35 {

    36     Q_OBJECT

    37 

    38 public:

    39     explicit CxeMemoryMonitor(CxeFeatureManager &features);

    40     ~CxeMemoryMonitor();

    41 

    42 public:

    43     int free() const;

    44 

    45 public slots:

    46     void startMonitoring();

    47     void stopMonitoring();

    48 

    49 private:

    50     bool requestFreeMemory(int requiredFreeMemory);

    51 

    52 private:

    53     CxeMemoryMonitorPrivate *p;

    54 };

    55 

    56 #endif // CXEMEMORYMONITOR_H

    57