--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memspy/Engine/Source/EventHandlers/MemSpyEngineMidwife.cpp	Tue Feb 02 01:57:15 2010 +0200
@@ -0,0 +1,163 @@
+/*
+* Copyright (c) 2009 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 <memspy/engine/memspyenginemidwife.h>
+
+// Driver includes
+#include <memspy/driver/memspydriverclient.h>
+#include <memspy/driver/memspydriverenumerationsshared.h>
+
+
+
+CMemSpyEngineMidwife::CMemSpyEngineMidwife( RMemSpyDriverClient& aDriver, TInt aPriority )
+:	CActive( aPriority ), iDriver( aDriver )
+	{
+	CActiveScheduler::Add( this );
+	}
+
+
+CMemSpyEngineMidwife::~CMemSpyEngineMidwife()
+	{
+	Cancel();
+    //
+    if ( iEventMonitorHandle != KNullHandle )
+        {
+        iDriver.EventMonitorClose( iEventMonitorHandle );
+        }
+    //
+    iObservers.Close();
+	}
+
+
+void CMemSpyEngineMidwife::ConstructL()
+	{
+    const TInt error = iDriver.EventMonitorOpen( iEventMonitorHandle );
+    User::LeaveIfError( error );
+    //
+	Request();
+	}
+
+
+CMemSpyEngineMidwife* CMemSpyEngineMidwife::NewL( RMemSpyDriverClient& aDriver, TInt aPriority )
+	{
+	CMemSpyEngineMidwife* self = new(ELeave) CMemSpyEngineMidwife( aDriver, aPriority );
+	CleanupStack::PushL( self );
+	self->ConstructL();
+	CleanupStack::Pop( self );
+	return self;
+	}
+
+
+void CMemSpyEngineMidwife::AddObserverL( MMemSpyEngineMidwifeObserver& aObserver )
+    {
+    RemoveObserver( aObserver );
+    iObservers.AppendL( &aObserver );
+    }
+
+
+void CMemSpyEngineMidwife::RemoveObserver( MMemSpyEngineMidwifeObserver& aObserver )
+    {
+    const TInt count = iObservers.Count();
+    for( TInt i=count-1; i>=0; i-- )
+        {
+        MMemSpyEngineMidwifeObserver* obs = iObservers[ i ];
+        if ( obs == &aObserver )
+            {
+            iObservers.Remove( i );
+            }
+        }
+    }
+
+
+void CMemSpyEngineMidwife::RunL()
+	{
+    const TUint notifiedId = iId;
+    const TInt typeAsInt = iStatus.Int();
+    User::LeaveIfError( typeAsInt );
+	Request();
+    //
+    const TMemSpyDriverEventType type = static_cast< TMemSpyDriverEventType >( typeAsInt );
+    switch( type )
+        {
+    case EMemSpyDriverEventTypeThreadCreate:
+        {
+        const TThreadId id( notifiedId );
+        NotifyThreadBornL( id );
+        break;
+        }
+    case EMemSpyDriverEventTypeProcessCreate:
+        {
+        const TProcessId id( notifiedId );
+        NotifyProcessBornL( id );
+        break;
+        }
+    default:
+        // Process removal not handled as not relevant
+        break;
+        }
+	}
+
+
+void CMemSpyEngineMidwife::DoCancel()
+	{
+	iDriver.EventMonitorNotifyCancel( iEventMonitorHandle );
+	}
+
+
+void CMemSpyEngineMidwife::Request()
+	{
+    Cancel();
+    iDriver.EventMonitorNotify( iEventMonitorHandle, iStatus, iId );
+	SetActive();
+	}
+
+
+void CMemSpyEngineMidwife::NotifyProcessBornL( const TProcessId& aId )
+    {
+    // NB: opening may fail - client's must tolerate this
+    RProcess process;
+    iDriver.OpenProcess( aId, process );
+    CleanupClosePushL( process );
+    //
+    const TInt count = iObservers.Count();
+    for( TInt i=0; i<count; i++ )
+        {
+        MMemSpyEngineMidwifeObserver* obs = iObservers[ i ];
+        TRAP_IGNORE( obs->ProcessIsBornL( aId, process ) );
+        }
+    //
+    CleanupStack::PopAndDestroy( &process );
+    }
+
+
+void CMemSpyEngineMidwife::NotifyThreadBornL( const TThreadId& aId )
+    {
+    // NB: opening may fail - client's must tolerate this
+    RThread thread;
+    iDriver.OpenThread( aId, thread );
+    CleanupClosePushL( thread );
+    //
+    const TInt count = iObservers.Count();
+    for( TInt i=0; i<count; i++ )
+        {
+        MMemSpyEngineMidwifeObserver* obs = iObservers[ i ];
+        TRAP_IGNORE( obs->ThreadIsBornL( aId, thread ) );
+        }
+    //
+    CleanupStack::PopAndDestroy( &thread );
+    }
+