camerauis/cameraxui/cxengine/src/cxememorymonitorprivate.cpp
branchRCL_3
changeset 24 bac7acad7cb3
parent 23 61bc0f252b2b
child 25 2c87b2808fd7
--- a/camerauis/cameraxui/cxengine/src/cxememorymonitorprivate.cpp	Tue Aug 31 15:03:46 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,150 +0,0 @@
-/*
-* Copyright (c) 2009-2010 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:
-*
-*/
-
-#include "cxememorymonitorprivate.h"
-
-#ifdef Q_OS_SYMBIAN
-#include <hal.h>
-#endif // Q_OS_SYMBIAN
-
-#include "cxutils.h"
-#include "cxenamespace.h"
-#include "cxefeaturemanager.h"
-
-namespace
-{
-    const int FREEING_RETRIES = 2;
-    const int MONITORING_INTERVAL = 10*1000; // in milliseconds
-}
-
-/*!
-* Constructor
-*/
-CxeMemoryMonitorPrivate::CxeMemoryMonitorPrivate(CxeFeatureManager &features)
-    : mFeatures(features)
-{
-    CX_DEBUG_ENTER_FUNCTION();
-
-    mFeatures.configuredValues(CxeVariationKeys::FREE_MEMORY_LEVELS, mLevels);
-
-    CX_DEBUG(("CxeMemoryMonitorPrivate - trigger level: %d bytes", mLevels.value(Cxe::FreeMemoryTrigger)));
-    CX_DEBUG(("CxeMemoryMonitorPrivate - target level:  %d bytes", mLevels.value(Cxe::FreeMemoryTarget)));
-
-#ifdef Q_OS_SYMBIAN
-    // Request free memory as defined in Feature Manager.
-    // If we cannot have enough free memory, throw error.
-    bool ok = requestFreeMemory(mLevels.value(Cxe::FreeMemoryTarget));
-    qt_symbian_throwIfError(ok ? KErrNone : KErrNoMemory);
-#endif // Q_OS_SYMBIAN
-
-    CX_DEBUG_EXIT_FUNCTION();
-}
-
-/*!
-* Destructor
-*/
-CxeMemoryMonitorPrivate::~CxeMemoryMonitorPrivate()
-{
-    CX_DEBUG_ENTER_FUNCTION();
-    stopMonitoring();
-    CX_DEBUG_EXIT_FUNCTION();
-}
-
-
-/*!
-* Get the amount of free memory (RAM).
-* @return Free RAM in bytes.
-*/
-int CxeMemoryMonitorPrivate::free() const
-{
-#ifdef Q_OS_SYMBIAN
-    int ram(0);
-    HAL::Get(HALData::EMemoryRAMFree, ram);
-    return ram;
-#else
-    //!@todo: real implementation for desktop etc?
-    return 1024*1024*1024;
-#endif // Q_OS_SYMBIAN
-}
-
-
-/*!
-* Request to free memory (RAM) to achieve asked level.
-* @param required Required free memory after this call.
-* @return Was it possible to achieve the required level of free memory.
-*/
-bool CxeMemoryMonitorPrivate::requestFreeMemory(int required)
-{
-    CX_DEBUG_ENTER_FUNCTION();
-
-    if (free() < required) {
-#ifdef Q_OS_SYMBIAN
-    qt_symbian_throwIfError(mOomMonitor.Connect());
-
-    int i(0);
-    int status(KErrGeneral);
-    do {
-        status = mOomMonitor.RequestFreeMemory(required);
-    } while (status != KErrNone && ++i < FREEING_RETRIES);
-
-    mOomMonitor.Close();
-#endif // Q_OS_SYMBIAN
-    }
-
-    // If we have the free RAM we were asked for, all good.
-    bool ok = free() >= required;
-
-    CX_DEBUG_EXIT_FUNCTION();
-    return ok;
-}
-
-/*!
-* Start monitoring free memory.
-*/
-void CxeMemoryMonitorPrivate::startMonitoring()
-{
-    if (!mTimer.isActive()) {
-        connect(&mTimer, SIGNAL(timeout()), this, SLOT(checkMemory()), Qt::UniqueConnection);
-        mTimer.start(MONITORING_INTERVAL);
-    }
-}
-
-/*!
-* Stop monitoring free memory.
-*/
-void CxeMemoryMonitorPrivate::stopMonitoring()
-{
-    mTimer.stop();
-}
-
-/*!
-* Check free memory. Try to release memory if below trigger level.
-*/
-void CxeMemoryMonitorPrivate::checkMemory()
-{
-    CX_DEBUG_ENTER_FUNCTION();
-
-    if(free() < mLevels.value(Cxe::FreeMemoryTrigger)) {
-        // Memory too low, request more free memory.
-        CX_DEBUG(("[WARNING] CxeMemoryMonitorPrivate - memory low, requesting more.."));
-        requestFreeMemory(mLevels.value(Cxe::FreeMemoryTarget));
-    }
-    CX_DEBUG_EXIT_FUNCTION();
-}
-
-
-// end of file