/*

* Copyright (c) 2010 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:  OOM Monitor plug-in interface.

*

*/

#include <apgwgnam.h>

#include "oommonitorplugin.h"

#include "oommemorymonitor.h"

#include "OomTraces.h"

// TLS is used to store the CMemoryMonitor pointer, CMemoryMonitor

// being the main object in the OOM monitor thread. This allows

// plugins to access the CMemoryMonitor object easily.

EXPORT_C void SetMemoryMonitorTls(CMemoryMonitor* aMonitor)

    {

    FUNC_LOG;

    Dll::SetTls(aMonitor);

    }

CMemoryMonitor* MemoryMonitorTls()

    {

    FUNC_LOG;

    return static_cast<CMemoryMonitor*>(Dll::Tls());

    }

void OomMonitorPluginPanic(TOomMonitorPluginPanic aReason)

    {

    FUNC_LOG;

    _LIT(KCat, "OomMonitorPlugin");

    User::Panic(KCat, aReason);

    }

EXPORT_C COomMonitorPlugin::COomMonitorPlugin()

: iMemoryMonitor(MemoryMonitorTls())

    {

    FUNC_LOG;

    __ASSERT_ALWAYS(iMemoryMonitor, OomMonitorPluginPanic(EOomMonitorPluginPanic_PluginConstructedOutsideOomMonitorThread));

    }

EXPORT_C COomMonitorPlugin::~COomMonitorPlugin()

    {

    FUNC_LOG;

    }

EXPORT_C void COomMonitorPlugin::ConstructL()

    {

    FUNC_LOG;

    // CAppOomMonitorPlugin assumes ConstructL is empty

    }

EXPORT_C void COomMonitorPlugin::ExtensionInterface(TUid /*aInterfaceId*/, TAny*& /*aImplementaion*/)

    {

    FUNC_LOG;

    }

EXPORT_C RFs& COomMonitorPlugin::FsSession()

    {

    FUNC_LOG;

    return iMemoryMonitor->iFs;

    }

EXPORT_C RWsSession& COomMonitorPlugin::WsSession()

    {

    FUNC_LOG;

    return iMemoryMonitor->iWs;

    }

EXPORT_C void COomMonitorPluginV2::FreeRam()

    {

    // Note that OomMonitorV2 will not call this version of the function

    // so it does not need to be implemented in derived classes.

    }

EXPORT_C CAppOomMonitorPlugin* CAppOomMonitorPlugin::NewL(TUid aAppUid)

    {

    CAppOomMonitorPlugin* self = new(ELeave) CAppOomMonitorPlugin(aAppUid);

    // ConstructL() currently not needed

    return self;

    }

CAppOomMonitorPlugin::CAppOomMonitorPlugin(TUid aAppUid)

: iAppUid(aAppUid)

    {

    }

void CAppOomMonitorPlugin::FreeRam()

    {

    SendMessageToApp(KAppOomMonitor_FreeRam);

    }

void CAppOomMonitorPlugin::MemoryGood()

    {

    SendMessageToApp(KAppOomMonitor_MemoryGood);

    }

void CAppOomMonitorPlugin::SendMessageToApp(TInt aMessage)

    {

    RWsSession& ws = WsSession();

    TInt wgId = 0;

    do 

        {

        CApaWindowGroupName::FindByAppUid(iAppUid, ws, wgId);

        if (wgId>0)

            {

            TWsEvent event;

            event.SetType(aMessage);

            event.SetTimeNow();

            ws.SendEventToWindowGroup(wgId, event);

            }

        }

    while (wgId>0);

    }