001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import com.liferay.portal.kernel.io.unsync.UnsyncStringWriter;
018    
019    import java.io.PrintWriter;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public class StackTraceUtil {
025    
026            public static String getStackTrace(Throwable t) {
027                    String stackTrace = null;
028    
029                    PrintWriter printWriter = null;
030    
031                    try {
032                            UnsyncStringWriter unsyncStringWriter = new UnsyncStringWriter();
033    
034                            printWriter = UnsyncPrintWriterPool.borrow(unsyncStringWriter);
035    
036                            t.printStackTrace(printWriter);
037    
038                            printWriter.flush();
039    
040                            stackTrace = unsyncStringWriter.toString();
041                    }
042                    finally {
043                            if (printWriter != null) {
044                                    printWriter.flush();
045                                    printWriter.close();
046                            }
047                    }
048    
049                    return stackTrace;
050            }
051    
052    }