/*

* Copyright (c) 2004-2008 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: 

*

*/

using System;

using System.IO;

using System.Collections.Generic;

using System.Text;

using System.Threading;

using SymbianStructuresLib.Debug.Symbols;

using SymbianStructuresLib.Debug.Symbols.Interfaces;

using SymbianSymbolLib.SourceManagement.Source;

using SymbianSymbolLib.SourceManagement.Provisioning;

using SymbianUtils.FileTypes;

using SymbianUtils;

using SLPluginSymbol.Data;

using SLPluginSymbol.Reader;

using SLPluginSymbol.Utilities;

namespace SLPluginSymbol.Source

{

    internal class SymbolSource : SymSource

    {

        #region Constructors

        public SymbolSource( string aURI, SymSourceProvider aProvider )

            : base( aURI, aProvider )

        {

            iData = new SymbolFileData( this );

            //

            FindCollections();

        }

        #endregion

        #region API

        public SymbolFileData ExcavateData()

        {

            SymbolFileData ret = iData;

            iData = null;

            return ret;

        }

        #endregion

        #region From SymSource

        public override void Read( TSynchronicity aSynchronicity )

        {

            EnsureCollectionsAreFound();

            //

            base.Read( aSynchronicity );

        }

        #endregion

        #region Properties

        public new SymSourceProvider Provider

        {

            get

            {

                SymSourceProvider provider = (SymSourceProvider) base.Provider;

                return provider;

            }

        }

        #endregion

        #region Event handlers

        #endregion

        #region Internal constants

        #endregion

        #region Internal methods

        private void EnsureCollectionsAreFound()

        {

            System.Diagnostics.Debug.Assert( iFindCollectionsARE != null );

            using ( iFindCollectionsARE )

            {

                iFindCollectionsARE.WaitOne();

            }

            //

            iFindCollectionsARE = null;

        }

        private void FindCollections()

        {

            iFindCollectionsARE = new AutoResetEvent( false );

            //

            iData.Split( System.Environment.ProcessorCount );

            iData.DataPrepared += new SymbolFileData.DataPreparedHandler( SymbolFileData_DataPrepared );

            iData.FindCollections();

        }

        private void SymbolFileData_DataPrepared( SymbolFileData aData )

        {

            System.Diagnostics.Debug.Assert( iFindCollectionsARE != null );

            System.Diagnostics.Debug.Assert( base.HaveBeenDisposedOf == false );

            //

            lock ( iAutoResetEventLock )

            {

                iFindCollectionsARE.Set();

            }

        }

        #endregion

        #region From DisposableObject

        protected override void CleanupManagedResources()

        {

            try

            {

                base.CleanupManagedResources();

            }

            finally

            {

                if ( iFindCollectionsARE != null )

                {

                    iFindCollectionsARE.Close();

                    iFindCollectionsARE = null;

                }

            }

        }

        #endregion

        #region Data members

        private SymbolFileData iData;

        private object iAutoResetEventLock = new object();

        private AutoResetEvent iFindCollectionsARE = null;

        #endregion

    }

}