sysresmonitoring/oommonitor/src/oomoutofmemorywatcher.cpp
branchRCL_3
changeset 1 0fdb7f6b0309
child 2 7645e9ce10dc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysresmonitoring/oommonitor/src/oomoutofmemorywatcher.cpp	Fri Feb 19 22:58:54 2010 +0200
@@ -0,0 +1,136 @@
+/*
+* Copyright (c) 2006 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:  Main classes for Out of Memory Monitor.
+*
+*/
+
+
+
+#include "oomoutofmemorywatcher.h"
+#include "oommemorymonitor.h"
+#include "oomtraces.h"
+
+// ======================================================================
+// class COutOfMemoryWatcher
+// - notifies when free memory crosses preset thresholds
+// ======================================================================
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+COutOfMemoryWatcher* COutOfMemoryWatcher::NewL(CMemoryMonitor& aMonitor, TInt aLowThreshold, TInt aGoodThreshold)
+    {
+    FUNC_LOG;
+
+    COutOfMemoryWatcher* self = new (ELeave) COutOfMemoryWatcher(aMonitor);
+    CleanupStack::PushL(self);
+    self->ConstructL(aLowThreshold, aGoodThreshold);
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+COutOfMemoryWatcher::~COutOfMemoryWatcher()
+    {
+    FUNC_LOG;
+
+    Cancel();
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+COutOfMemoryWatcher::COutOfMemoryWatcher(CMemoryMonitor& aMonitor)
+:   CActive(CActive::EPriorityStandard),
+    iLafShutdown(aMonitor)
+    {
+    FUNC_LOG;
+
+    CActiveScheduler::Add(this);
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+void COutOfMemoryWatcher::ConstructL(TInt aLowThreshold, TInt aGoodThreshold)
+    {
+    FUNC_LOG;
+
+    UserSvr::SetMemoryThresholds(aLowThreshold,aGoodThreshold);
+    User::LeaveIfError(iChangeNotifier.Create());
+    }
+
+void COutOfMemoryWatcher::UpdateThresholds(TInt aLowThreshold, TInt aGoodThreshold)
+    {
+    FUNC_LOG;
+
+    UserSvr::SetMemoryThresholds(aLowThreshold,aGoodThreshold);
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+void COutOfMemoryWatcher::Start()
+    {
+    FUNC_LOG;
+
+    if (!IsActive())
+        {
+        iChangeNotifier.Logon(iStatus);
+        SetActive();
+        }
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+void COutOfMemoryWatcher::DoCancel()
+    {
+    FUNC_LOG;
+
+    iChangeNotifier.LogonCancel();
+    }
+
+// ---------------------------------------------------------
+//
+// ---------------------------------------------------------
+//
+void COutOfMemoryWatcher::RunL()
+    {
+    FUNC_LOG;
+
+    TInt status = iStatus.Int();
+
+    if (status < 0)
+        {
+        User::Leave(status);
+        }
+
+    // Check for memory status change.
+    if (status & EChangesFreeMemory)
+        {
+        iLafShutdown.FreeMemThresholdCrossedL();
+        }
+
+    // We are not active until FreeMemThresholdCrossedL returns.
+    Start();
+    }