diff -r 000000000000 -r 1e05558e2206 usbengines/usbwatcher/src/cusbdevconstarter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbengines/usbwatcher/src/cusbdevconstarter.cpp	Thu Dec 17 09:14:30 2009 +0200
@@ -0,0 +1,201 @@
+/*
+* Copyright (c) 2007-2009 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:  Implement class CUsbDevConStarter
+*
+*/
+
+
+#include "cusbdevconstarter.h"
+#include "debug.h"
+
+_LIT16( KUsbDevConPath, "z:\\sys\\bin\\usbdevcon.exe" );
+_LIT16( KUsbDevConParams, "" );
+
+
+// ======== MEMBER FUNCTIONS ========
+
+// ----------------------------------------------------------------------------
+// NewL
+// ----------------------------------------------------------------------------
+//
+CUsbDevConStarter* CUsbDevConStarter::NewL()
+    {
+    LOG_FUNC
+
+    CUsbDevConStarter* self = new ( ELeave ) CUsbDevConStarter();
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// ----------------------------------------------------------------------------
+// Destructor
+// ----------------------------------------------------------------------------
+//
+CUsbDevConStarter::~CUsbDevConStarter()
+    {
+    LOG_FUNC
+
+    Cancel();
+    }
+
+// ----------------------------------------------------------------------------
+// Start usbdevcon process unless it is already running.
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::Start()
+    {
+    LOG_FUNC
+
+    iStarted = ETrue;
+    if ( EIdle == iState )
+        {
+        TInt err = iProcess.Create( KUsbDevConPath, KUsbDevConParams );
+        if ( KErrNone == err )
+            {
+            //start process and wait until it is constructed
+            iProcess.Resume();
+            iState = EWaitingRendezvous;
+            iProcess.Rendezvous( iStatus );
+            SetActive();
+            }
+        else
+            {
+            //error in starting, no restarting needed
+            iStarted = EFalse;
+            LOG1( "ERROR: RProcess::Create = %d" ,  err );
+            }
+        }
+
+    }
+
+
+// ----------------------------------------------------------------------------
+// Logon to usbdevcon process for termination
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::Logon()
+    {
+    LOG_FUNC
+
+    iState = ERunning;
+
+    //request termination notify
+    iProcess.Logon( iStatus );
+    SetActive();
+    }
+
+
+// ----------------------------------------------------------------------------
+// StopRestarting prevents usbdevcon process restarting.
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::StopRestarting()
+    {
+    LOG_FUNC
+
+    iStarted = EFalse;
+    }
+
+// ----------------------------------------------------------------------------
+// RunL handles the process termination.
+// The process is restarted, if Stop has not been requested and it terminated
+// without error.
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::RunL()
+    {
+    LOG_FUNC
+
+    LOG2( "iStatus = %d, iState = %d", iStatus.Int(), iState );
+    switch( iState )
+        {
+        case EIdle:
+            {
+            break;
+            }
+        case EWaitingRendezvous:
+            {
+            Logon();
+            break;
+            }
+        case ERunning:
+            {
+            iState = EIdle;
+            iProcess.Close();
+
+            //Do not restart, if terminated with error.
+            if( iStarted && ( iStatus == KErrNone ) )
+                {
+                Start();
+                }
+            break;
+            }
+        default:
+            LOG( "Unhandled state" );
+			break;
+        }
+
+    }
+
+// ----------------------------------------------------------------------------
+// Log error, if RunL leaves. RunL should never leave.
+// ----------------------------------------------------------------------------
+//
+TInt CUsbDevConStarter::RunError( TInt aError )
+    {
+    LOG_FUNC
+
+    LOG1( "aError = %d", aError );
+    return KErrNone;
+    }
+
+// ----------------------------------------------------------------------------
+// DoCancel
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::DoCancel()
+    {
+    LOG_FUNC
+
+    iProcess.LogonCancel( iStatus );
+    iProcess.Close();
+    }
+
+// ----------------------------------------------------------------------------
+// Constructor
+// ----------------------------------------------------------------------------
+//
+CUsbDevConStarter::CUsbDevConStarter()
+    : CActive( EPriorityStandard )
+    , iStarted( EFalse )
+    , iState( EIdle )
+    {
+    LOG_FUNC
+
+    CActiveScheduler::Add( this );
+    }
+
+// ----------------------------------------------------------------------------
+// ConstructL
+// ----------------------------------------------------------------------------
+//
+void CUsbDevConStarter::ConstructL()
+    {
+    LOG_FUNC
+    //empty
+    }
+
+// End of file