ijfx.core.timer.DefaultTimer.java Source code

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Here is the source code for ijfx.core.timer.DefaultTimer.java

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/*
This file is part of ImageJ FX.
    
ImageJ FX is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
ImageJ FX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with ImageJ FX.  If not, see <http://www.gnu.org/licenses/>. 
    
 Copyright 2015,2016 Cyril MONGIS, Michael Knop
       
 */
package ijfx.core.timer;

import ijfx.ui.main.ImageJFX;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import org.apache.commons.math3.stat.descriptive.SummaryStatistics;

/**
 *
 * @author Cyril MONGIS, 2016
 */
public class DefaultTimer implements Timer {

    Map<String, SummaryStatistics> stats = new HashMap<>();
    long start;
    long last;

    Logger logger = ImageJFX.getLogger();

    String id = "DefaultTimer";

    public DefaultTimer(String id) {
        this();
        this.id = id;
    }

    public DefaultTimer() {
        start();
    }

    @Override
    public Map<String, SummaryStatistics> getStats() {
        return stats;
    }

    @Override
    public SummaryStatistics getStats(String id) {
        stats.putIfAbsent(id, new SummaryStatistics());
        return stats.get(id);
    }

    public void start() {
        start = System.currentTimeMillis();
        last = System.currentTimeMillis();
    }

    public long now() {
        return System.currentTimeMillis();
    }

    @Override
    public long measure(String text) {
        long now = System.currentTimeMillis();
        long elapsed = (now - last);
        last = now;
        getStats(text).addValue(elapsed);
        return elapsed;
    }

    @Override
    public long elapsed(String text) {
        long elapsed = measure(text);
        logger.info(String.format("[%s] %s : %dms", id, text, elapsed));
        return elapsed;
    }

    protected String getLog(String id) {
        return new StringBuilder().append(getColumns()).append(getRow(id, getStats(id))).toString();

    }

    @Override
    public void logAll() {

        final StringBuilder builder = new StringBuilder().append(String.format("[%s]", id)).append(getColumns());
        stats.entrySet().stream().sequential().forEach(entry -> {
            String key = entry.getKey();
            SummaryStatistics value = entry.getValue();
            builder.append(getRow(key, value));
        });

        logger.fine(builder.toString());

    }

    @Override
    public void log(String id) {
        //logger.info("");
    }

    private static String COLUMNS = String.format("\n+--------------\n%30s | %8s | %8s | %8s\n+--------------\n",
            "Action", "Mean", "Std. Dev", "N");

    protected String getColumns() {
        return COLUMNS;
    }

    protected String getRow(String id, SummaryStatistics statics) {

        return String.format("%30s | %6.0fms | %6.0fms | %8d\n", id.length() > 22 ? id.substring(0, 21) : id,
                statics.getMean(), statics.getStandardDeviation(), statics.getN());

    }

    @Override
    public String getName() {
        return id;
    }

}