usbengines/usbwatcher/src/usbwatcher.cpp
author Pat Downey <patd@symbian.org>
Fri, 04 Jun 2010 10:27:39 +0100
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/*
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* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Entry point for UsbWatcher
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*
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*/
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#include <c32comm.h>
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#include "cusbwatcher.h"
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#include "cusbwatcherscheduler.h"
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#include "cusbwatcherserver.h"
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#include "usbwatchershared.h"
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// LITERALS
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_LIT( KUsbWatcherName, "UsbWatcher" );
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// LOCAL FUNCTION PROTOTYPES
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static void StartUsbWatcherL();
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// ============================= LOCAL FUNCTIONS ==============================
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// ----------------------------------------------------------------------------
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// Entry-point for the USB Watcher.
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// ----------------------------------------------------------------------------
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//
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TInt E32Main()
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    {
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    LOG_FUNC
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    // rename the thread so it is easy to find the panic application
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    TInt ret = User::RenameThread( KUsbWatcherName );
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    if( KErrNone != ret ) // Not fatal
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        {
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        LOG1( "ERROR: User::RenameThread = %d", ret );
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        }
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    __UHEAP_MARK;
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    // create clean-up stack
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    CTrapCleanup* cleanup = CTrapCleanup::New();
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    TRAP( ret, StartUsbWatcherL() );
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    if ( KErrAlreadyExists == ret )
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        {
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        LOG( "UsbWatcher is already running." );
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        }
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    else if ( KErrNone != ret )
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        {
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        LOG1( "ERROR: StartUsbWatcherL = %d", ret );
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        }
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    delete cleanup; // destroy clean-up stack
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    __UHEAP_MARKEND;
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    LOG1( "E32Main = %d", ret );
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    return ret;
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    }
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// ----------------------------------------------------------------------------
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// Constructs and installs the active scheduler, constructs USB Watcher's
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// objects.
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// ----------------------------------------------------------------------------
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//
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static void StartUsbWatcherL()
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    {
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    LOG_FUNC
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    LOG( "Starting USB Watcher..." );
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    LOG( "Create CUsbWatcherScheduler..." );
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    // Construct and install the active scheduler
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    CUsbWatcherScheduler *myScheduler = CUsbWatcherScheduler::NewL();
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    // Push onto the cleanup stack
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    CleanupStack::PushL( myScheduler );
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    LOG( "Install ActiveScheduler..." );
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    // Install as the active scheduler
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    CActiveScheduler::Install( myScheduler );
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    CUsbWatcherServer* usbwatcher;
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    LOG( "Create CUsbWatcherServer..." );
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    usbwatcher = CUsbWatcherServer::NewLC();
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    RProcess::Rendezvous(KErrNone);
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    LOG( "Set server..." );
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	myScheduler->SetServer( *usbwatcher );
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    LOG( "Start Active scheduler..." );
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    CActiveScheduler::Start();
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    LOG( "Cleanup CUsbWatcherServer and CUsbWatcherScheduler ..." );
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    CleanupStack::PopAndDestroy( 2, myScheduler ); //usbwatcher, myScheduler
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    }
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// End of file