/*

* 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.Collections.Generic;

using System.Text;

using SymbianUtils.Utilities;

using CrashDebuggerLib.Structures.KernelObjects;

using CrashDebuggerLib.Structures.Common;

using CrashDebuggerLib.Structures.Process;

using CrashDebuggerLib.Structures.CodeSeg;

using CrashDebuggerLib.Structures.Register;

using SymbianStackLib.Engine;

using SymbianStackLib.Data.Output;

using SymbianStructuresLib.CodeSegments;

using SymbianStructuresLib.Debug.Symbols;

using SymbianStructuresLib.Arm.Registers;

using SymbianUtils.DataBuffer;

using SymbianUtils.DataBuffer.Entry;

using SymbianUtils.DataBuffer.Primer;

namespace CrashDebuggerLib.Structures.Thread

{

    public class ThreadStackData : CrashDebuggerAware

    {

        #region Constructors

        public ThreadStackData( CrashDebuggerInfo aCrashDebugger, ThreadStackInfo aInfo )

            : base( aCrashDebugger )

        {

            iInfo = aInfo;

            iStackBuilder = new ThreadStackBuilder( this);

        }

        #endregion

        #region API

        public void Add( uint aValue )

        {

            byte val = (byte) aValue;

            iDataSource.Add( val );

        }

        public void BuildCallStackSync()

        {

            if ( iStackBuilder.IsBusy )

            {

                // Wait for it

                while ( iStackBuilder.IsBusy )

                {

                    System.Threading.Thread.Sleep( 100 );

                }

            }

            else

            {

                iStackBuilder.BuildSync();

            }

        }

        public void BuildCallStackAsync()

        {

            if ( iStackBuilder.IsBusy )

            {

                throw new ArgumentException( "Stack builder is busy!" );

            }

            // Request call back when queue spot available. If it's the current

            // thread then we jump it to the start of the queue

            CrashDebugger.AsyncOperationManager.Queue( iStackBuilder, Info.Thread.IsCurrent );

        }

        #endregion

        #region String Conversion Support

        public string CallStackToString()

        {

            StringBuilder ret = new StringBuilder();

            //

            ret.Append( CallStackElements.ToString() );

            //

            return ret.ToString();

        }

        #endregion

        #region Properties

        public int Size

        {

            get { return iDataSource.Count; }

        }

        public StackOutputData CallStackElements

        {

            get

            {

                if ( !iStackBuilder.CallStackConstructed )

                {

                    BuildCallStackSync();

                }

                //

                return iStackBuilder.CallStackElements;

            }

        }

        #endregion

        #region Internal methods

        internal void SetStartingAddress( uint aAddress )

        {

            if ( iDataSource.AddressOffset == 0 )

            {

                iDataSource.AddressOffset = aAddress;

            }

        }

        internal DataBuffer Data

        {

            get { return iDataSource; }

        }

        internal ThreadStackInfo Info

        {

            get { return iInfo; }

        }

        internal DataBufferUint LastRawDataEntry

        {

            get

            {

                if ( Size < 4 )

                {

                    throw new ArgumentException();

                }

                //

                DataBufferUint ret = null;

                //

                foreach ( DataBufferUint entry in iDataSource.GetUintEnumerator() )

                {

                    // The enumerator works from bottom up, so just return the first one.

                    ret = entry;

                    break;

                }

                //

                return ret;

            }

        }

        #endregion

        #region Internal constants

        #endregion

        #region From System.Object

        public override string ToString()

        {

            return base.ToString();

        }

        #endregion

        #region Data members

        private readonly ThreadStackInfo iInfo;

        private readonly ThreadStackBuilder iStackBuilder;

        private DataBuffer iDataSource = new DataBuffer();

        private StackOutputData iDataOutput = new StackOutputData();

        #endregion

    }

}