Example usage for java.lang System nanoTime

Introduction

In this page you can find the example usage for java.lang System nanoTime.

Prototype

@HotSpotIntrinsicCandidate
public static native long nanoTime();

Source Link

Document

Returns the current value of the running Java Virtual Machine's high-resolution time source, in nanoseconds.

Usage

From source file:com.springsource.insight.plugin.apache.http.hc4.HttpPlaceholderRequestTest.java

@Test
public void testOnNoRequestValue() {
    assertSame(HttpPlaceholderRequest.PLACEHOLDER,
            HttpPlaceholderRequest.resolveHttpRequest("hello", Long.valueOf(System.nanoTime())));
}

From source file:me.j360.trace.server.brave.BootstrapTrace.java

private long microsSinceInit() {
    return (System.nanoTime() - startTick) / 1000;
}

From source file:eu.fbk.utils.analysis.stemmer.AbstractStemmer.java

/**
 * Stems a list of terms read from the specified reader.
 *
 * @param r the reader//from ww w .j  av a2s .  com
 */
public void process(Reader r) throws IOException {
    long begin = 0, end = 0, time = 0;
    int count = 0;
    LineNumberReader lnr = new LineNumberReader(r);
    String line = null;
    String s = null;
    while ((line = lnr.readLine()) != null) {
        begin = System.nanoTime();
        s = stem(line);
        end = System.nanoTime();
        time += end - begin;
        count++;
    } // end while
    lnr.close();
    logger.info(count + " total " + df.format(time) + " ns");
    logger.info("avg " + df.format((double) time / count) + " ns");
}

From source file:io.adeptj.runtime.tools.DefaultTemplateEngine.java

DefaultTemplateEngine() {
    long startTime = System.nanoTime();
    this.mustacheEngine = TemplateEngines.buildMustacheEngine();
    // Can't use the static LOGGER due to enum restriction.
    LoggerFactory.getLogger(DefaultTemplateEngine.class).info("MustacheEngine initialized in: [{}] ms!!",
            Times.elapsedMillis(startTime));
}

From source file:br.upe.ecomp.doss.algorithm.abc.ABC.java

/**
 * Each food source are initialized./*from   ww w. j  a va  2 s.c  om*/
 */
private void initializeFoodSource(int index) {

    MersenneTwister mt = new MersenneTwister(System.nanoTime());
    double randNumber;
    double fitness;
    double[] position = new double[dimensions];

    for (int i = 0; i < dimensions; i++) {
        randNumber = mt.nextDouble() * 32767 / ((double) 32767 + (double) 1);
        position[i] = randNumber
                * (getProblem().getUpperBound(dimensions) - getProblem().getLowerBound(dimensions))
                + getProblem().getLowerBound(dimensions);
    }

    fitness = getProblem().getFitness(position);
    foodSources[index] = new FoodSource(dimensions);
    foodSources[index].updateCurrentPosition(position, fitness);
    foodSources[index].updateBestPosition(position, fitness);
    foodSources[index].setCountStagnation(0);
}

From source file:com.flexive.shared.TimestampRecorder.java

/**
 * Resets the timer to begin recording.
 */
public void begin() {
    timestamps.clear();
    startNanos = System.nanoTime();
    totalNanos = 0;
}

From source file:de.zib.sfs.WrappedFSDataInputStream.java

@Override
public int read() throws IOException {
    long startTime = System.nanoTime();
    int result = this.in.read();
    String datanodeHostname = getDatanodeHostNameString();
    this.aggregator.aggregateReadDataOperationStatistics(OperationSource.SFS, OperationCategory.READ, startTime,
            System.nanoTime(), this.fd, result == -1 ? 0 : 1,
            this.hostname.equals(datanodeHostname) || "localhost".equals(datanodeHostname));
    return result;
}

From source file:com.amazonaws.util.TimingInfo.java

/**
 * Captures the current wall clock time (since epoch in millisecond)
 * and the current time (in nanosecond) used for timing measurement.
 * For more info, see:/*from  ww  w.  j a  v  a2 s. co m*/
 * https://blogs.oracle.com/dholmes/entry/inside_the_hotspot_vm_clocks
 */
public static TimingInfo startTiming() {
    return new TimingInfo(Long.valueOf(System.currentTimeMillis()), System.nanoTime(), null);
}

From source file:org.messic.server.api.randomlists.GenreRandomListPlugin.java

@Override
public RandomList getRandomList(User user) {
    List<MDOGenre> randomGenreList = daoGenre.getRandomGenre(user.getLogin(), 1);
    if (randomGenreList != null && randomGenreList.size() > 0) {
        List<MDOAlbum> albumList = daoAlbum.getAll(user.getLogin(), randomGenreList.get(0));

        RandomList rl = new RandomList("RandomListName-Genre", "RandomListTitle-Genre");
        rl.addDetail(randomGenreList.get(0).getName());

        for (int i = 0; i < albumList.size() && i < MAX_ELEMENTS; i++) {
            for (MDOSong mdoSong : albumList.get(i).getSongs()) {
                Song song = new Song(mdoSong, true, true);
                rl.addSong(song);//w  ww  .j a  v a  2s.  com
            }

        }

        long seed = System.nanoTime();
        if (rl.getSongs() != null) {
            Collections.shuffle(rl.getSongs(), new Random(seed));
        }
        return rl;
    }
    return null;
}

From source file:com.eviware.soapui.impl.wsdl.submit.transports.http.TimeablePostMethod.java

protected void writeRequest(HttpState arg0, HttpConnection arg1) throws IOException, HttpException {
    super.writeRequest(arg0, arg1);

    if (startTime == 0)
        startTime = System.nanoTime();
}