/*

* Copyright (c) 2009-2010 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:

*

*/

package com.nokia.mj.impl.utils;

import java.io.PrintStream;

import java.io.ByteArrayOutputStream;

import com.nokia.mj.impl.rt.support.Jvm;

import com.nokia.mj.impl.utils.Logger;

public final class DebugUtils

{

    static

    {

        try

        {

            Jvm.loadSystemLibrary("javautils");

        }

        {

        }

    }

    /**

     * Asks Vm to do thread dump if the dumping libraries are present.

     */

    public static void doThreadDump()

    {

        _doThreadDump();

    }

    /**

     * Closes the thread dumper thread.

     */

    public static void closeThreadDumper()

    {

        _closeThreadDumper();

    }

    public static String getStackTrace(Throwable t)

    {

        String res = null;

        if (t != null)

        {

            try 

            {

                ByteArrayOutputStream baos = new ByteArrayOutputStream();

                _getStackTrace(t, new PrintStream(baos));

                res = baos.toString();

            }

            catch (Throwable t2)

            {

                System.err.println("Failure in getting stack trace.");

                t2.printStackTrace();

            }

        }

        return res;

    }

    private static native void _getStackTrace(Throwable t, PrintStream printStream);

    private static native void _doThreadDump();

    private static native void _closeThreadDumper();

}