001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.classic.issue.lbclassic36;
015
016import java.text.SimpleDateFormat;
017import java.util.Date;
018
019//import org.joda.time.format.DateTimeFormat;
020//import org.joda.time.format.DateTimeFormatter;
021
022public class DateFormatPerf_Tapp {
023    public static final String ISO8601_PATTERN = "yyyy-MM-dd HH:mm:ss,SSS";
024    static final long NANOS_IN_ONE_SEC = 1000 * 1000 * 1000L;
025
026    static long RUN_LENGTH = 1000 * 1000;
027
028    public static void main(String[] args) {
029        for (int i = 0; i < 5; i++) {
030            doRawJoda();
031            doRawSDF();
032        }
033
034        print("Raw Joda:     ", doRawJoda());
035        print("Raw SDF:      ", doRawSDF());
036    }
037
038    static void print(String msg, double avg) {
039        System.out.println(msg + " average tick " + avg + " nanoseconds");
040    }
041
042    static double doRawJoda() {
043        // DateTimeFormatter jodaFormat = DateTimeFormat.forPattern(ISO8601_PATTERN);
044        @SuppressWarnings("unused")
045        long timeInMillis = new Date().getTime();
046        long start = System.nanoTime();
047        for (int i = 0; i < RUN_LENGTH; ++i) {
048            // jodaFormat.print(timeInMillis);
049        }
050        return (System.nanoTime() - start) * 1.0d / RUN_LENGTH;
051    }
052
053    static double doRawSDF() {
054        SimpleDateFormat simpleFormat = new SimpleDateFormat(ISO8601_PATTERN);
055        long timeInMillis = new Date().getTime();
056        long start = System.nanoTime();
057        for (int i = 0; i < RUN_LENGTH; ++i) {
058            simpleFormat.format(timeInMillis);
059        }
060        return (System.nanoTime() - start) * 1.0d / RUN_LENGTH;
061    }
062
063}