Example usage for java.lang System nanoTime

List of usage examples for java.lang System nanoTime

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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:fm.last.peyote.cacti.hash.CactiHashKeyGenerator.java

protected String generateHash(String type) {
    String md5Hash = DigestUtils.md2Hex("peyote" + System.nanoTime());
    return "hash_" + type + getVersion() + md5Hash;
}

From source file:de.cebitec.mgx.seqstorage.ReaderFactoryTest.java

@Test
public void testFASTQGZReader() throws Exception {
    System.out.println("testFASTQGZReader");

    File temp = File.createTempFile("temp", Long.toString(System.nanoTime()));
    temp.delete();//w w  w  . j av a2 s. c o  m
    temp.mkdirs();

    File f1 = copyTestData(FastaReader.class, "de/cebitec/mgx/seqstorage/singleread.fq.gz", temp,
            "foo.fastq.gz");

    FactoryI<DNASequenceI> rf = new ReaderFactory();
    SeqReaderI<? extends DNASequenceI> reader = rf.<DNAQualitySequenceI>getReader(f1.getAbsolutePath());
    assertNotNull(reader);
    assertTrue(reader instanceof FASTQReader);

    assertTrue(reader.hasMoreElements());
    assertTrue(reader.hasQuality());
    DNASequenceI seq = reader.nextElement();
    assertNotNull(seq);
    assertNotNull(seq.getSequence());
    String nucl = new String(seq.getSequence());
    assertEquals("AAAAA", nucl);

    f1.delete();
    temp.delete();
}

From source file:com.protheos.graphstream.JSONReceiver.java

/**
 * //  w  ww .  ja  v a  2s . c  o m
 * @param host
 *            , the host of the Gephi server
 * @param port
 *            , the port of the Gephi server
 * @param workspace
 *            , the workspace name of the Gephi server
 */
public JSONReceiver(String host, int port, String workspace) {
    this.host = host;
    this.port = port;
    this.workspace = workspace;
    this.sourceId = String.format("<Gephi json stream %x>", System.nanoTime());
    this.debug = false;

    this.sourceTime = new SourceTime(this.sourceId);
    currentStream = new ThreadProxyPipe();
    init();
    start();
}

From source file:hu.vpmedia.media.red5.bwcheck.BandwidthDetection.java

/**
 * Handle callback from service call. // ww  w  . ja v  a 2  s . co  m
 */

public void resultReceived(IPendingServiceCall call) {
    Long now = new Long(System.nanoTime() / 1000000); //new Long(System.currentTimeMillis());
    this.pakRecv.add(now);
    Long timePassed = (now - this.beginningValues.get("time"));

    this.count++;

    log.info("count: " + count + " sent: " + sent + " timePassed: " + timePassed + " latency: " + latency);

    if (count == 1) {
        latency = Math.min(timePassed, 800);
        latency = Math.max(latency, 10);

        // We now have a latency figure so can start sending test data.
        // Second call.  1st packet sent
        pakSent.add(now);
        sent++;

        log.info("Sending First Payload at " + now);
        this.callBWCheck(this.client.getAttribute("payload"));

    }

    //To run a very quick test, uncomment the following if statement and comment out the next 3 if statements.

    /*
    else if (count == 2 && (timePassed < 2000)) {
    pakSent.add(now);
    sent++;
    cumLatency++;
    this.callBWCheck(this.client.getAttribute("payload"));
    }
    */

    //The following will progressivly increase the size of the packets been sent until 1 second has elapsed.
    else if ((count > 1 && count < 3) && (timePassed < 1000)) {
        pakSent.add(now);
        sent++;
        cumLatency++;
        log.info("Sending Second Payload at " + now);
        this.callBWCheck(this.client.getAttribute("payload_1"));
    } else if ((count >= 3 && count < 6) && (timePassed < 1000)) {
        pakSent.add(now);
        sent++;
        cumLatency++;
        log.info("Sending Third Payload at " + now);
        this.callBWCheck(this.client.getAttribute("payload_1"));
    }

    else if (count >= 6 && (timePassed < 1000)) {
        pakSent.add(now);
        sent++;
        cumLatency++;
        log.info("Sending Fourth Payload at " + now);
        this.callBWCheck(this.client.getAttribute("payload_2"));
    }

    //Time elapsed now do the calcs
    else if (sent == count) {
        // see if we need to normalize latency
        if (latency >= 100) {
            //make sure satelite and modem is detected properly
            if (pakRecv.get(1) - pakRecv.get(0) > 1000) {
                latency = 100;
            }
        }

        this.client.removeAttribute("payload");
        this.client.removeAttribute("payload_1");
        this.client.removeAttribute("payload_2");

        final IStreamCapableConnection endStats = this.getStats();
        deltaDown = (endStats.getWrittenBytes() - beginningValues.get("b_down")) * 8 / 1000; // bytes to kbits
        deltaTime = ((now - beginningValues.get("time")) - (latency * cumLatency)) / 1000; // total dl time - latency for each packet sent in secs
        if (Math.round(deltaTime) <= 0) {
            deltaTime = (now - beginningValues.get("time") + latency) / 1000;
        }
        kbitDown = Math.round(deltaDown / deltaTime); // kbits / sec

        if (kbitDown < 100)
            kbitDown = 100;

        log.info("onBWDone: kbitDown = " + kbitDown + ", deltaDown= " + deltaDown + ", deltaTime = " + deltaTime
                + ", latency = " + this.latency);

        this.callBWDone(this.kbitDown, this.deltaDown, this.deltaTime, this.latency);
    }

}

From source file:io.moquette.parser.netty.performance.PublishBomber.java

public void publishLoop(int messagesPerSecond, int numToSend) throws UnsupportedEncodingException {
    long pauseMicroseconds = (int) ((1.0 / messagesPerSecond) * 1000 * 1000);
    LOG.warn("PUB: Pause over the each message sent {} microsecs", pauseMicroseconds);

    LOG.info("PUB: publishing..");
    final long startTime = System.currentTimeMillis();

    //initialize the timer
    PlatformTimer timer = PlatformTimer.detect();
    for (int i = 0; i < numToSend; i++) {
        long nanos = System.nanoTime();
        byte[] rawContent = ("Hello world!!-" + nanos).getBytes(CharEncoding.UTF_8);
        ByteBuf payload = Unpooled.copiedBuffer(rawContent);

        MqttFixedHeader fixedHeader = new MqttFixedHeader(MqttMessageType.PUBLISH, false, MqttQoS.AT_MOST_ONCE,
                false, 0);/*from  w ww . ja v a 2  s  .  co  m*/
        MqttPublishVariableHeader varHeader = new MqttPublishVariableHeader("/topic", 0);
        MqttPublishMessage pubMessage = new MqttPublishMessage(fixedHeader, varHeader, payload);

        sendMessage(pubMessage);
        timer.sleep(pauseMicroseconds);
    }
    LOG.info("PUB: published in {} ms", System.currentTimeMillis() - startTime);
}

From source file:com.baidu.rigel.biplatform.ma.auth.resource.RandomValidateCode.java

/**
 * //w  ww.  j av  a  2 s .co m
 * @param request
 * @param response
 * @param cacheManagerForResource 
 */
public static void getRandcode(HttpServletRequest request, HttpServletResponse response,
        CacheManagerForResource cacheManagerForResource) {
    // BufferedImageImage,Image????
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
    Graphics g = image.getGraphics(); // ImageGraphics,?????
    g.fillRect(0, 0, width, height);
    g.setFont(new Font("Times New Roman", Font.ROMAN_BASELINE, 18));
    g.setColor(getRandColor(110, 133));
    // 
    for (int i = 0; i <= lineSize; i++) {
        drowLine(g);
    }
    // ?
    String randomString = "";
    for (int i = 1; i <= stringNum; i++) {
        randomString = drowString(g, randomString, i);
    }
    String key = null;
    if (request.getCookies() != null) {
        for (Cookie tmp : request.getCookies()) {
            if (tmp.getName().equals(Constants.RANDOMCODEKEY)) {
                key = tmp.getName();
                cacheManagerForResource.removeFromCache(key);
                break;
            }
        }
    }
    if (StringUtils.isEmpty(key)) {
        key = String.valueOf(System.nanoTime());
    }
    cacheManagerForResource.setToCache(key, randomString);
    final Cookie cookie = new Cookie(Constants.RANDOMCODEKEY, key);
    cookie.setPath(Constants.COOKIE_PATH);
    response.addCookie(cookie);
    g.dispose();
    try {
        ImageIO.write(image, "JPEG", response.getOutputStream()); // ??
    } catch (Exception e) {
        LOG.info(e.getMessage());
    }
}

From source file:fr.ybo.transportsbordeaux.tbcapi.Keolis.java

/**
 * @param <ObjetKeolis> type d'objet Keolis.
 * @param url           url./*w  ww.ja va 2s .  c  om*/
 * @param handler       handler.
 * @return liste d'objets Keolis.
 * @throws TbcErreurReseaux en cas d'erreur rseau.
 */
private <ObjetKeolis> List<ObjetKeolis> appelKeolis(String url, KeolisHandler<ObjetKeolis> handler)
        throws ErreurReseau {
    LOG_YBO.debug("Appel d'une API Keolis sur l'url '" + url + '\'');
    long startTime = System.nanoTime() / 1000;
    HttpClient httpClient = HttpUtils.getHttpClient();
    HttpUriRequest httpPost = new HttpPost(url);
    List<ObjetKeolis> answer;
    try {
        HttpResponse reponse = httpClient.execute(httpPost);
        ByteArrayOutputStream ostream = new ByteArrayOutputStream();
        if (reponse == null || reponse.getEntity() == null) {
            throw new ErreurReseau("Erreur lors de la rcupration de la rponse http");
        }
        reponse.getEntity().writeTo(ostream);
        String contenu = new String(ostream.toByteArray(), "ISO-8859-1");
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser parser = factory.newSAXParser();
        parser.parse(new ByteArrayInputStream(contenu.getBytes("UTF-8")), handler);
        answer = handler.getObjets();
    } catch (IOException socketException) {
        throw new ErreurReseau(socketException);
    } catch (SAXException saxException) {
        throw new ErreurReseau(saxException);
    } catch (ParserConfigurationException exception) {
        throw new KeolisException("Erreur lors de l'appel  l'API keolis", exception);
    }
    if (answer == null) {
        throw new ErreurReseau("Erreur dans la rponse donnes par Keolis.");
    }
    long elapsedTime = System.nanoTime() / 1000 - startTime;
    LOG_YBO.debug("Rponse de Keolis en " + elapsedTime + "s");
    return answer;
}

From source file:com.payu.ratel.client.RatelHessianProxyFactoryBean.java

private RemoteServiceCallEvent createServiceCallEvent(MethodInvocation invocation) {
    return new RemoteServiceCallEvent(ProcessContext.getInstance(), System.nanoTime(), this.getServiceUrl(),
            new ServiceCallInput(invocation.getMethod().getName(), invocation.getArguments(),
                    invocation.getMethod().getDeclaringClass()));
}

From source file:alluxio.util.FormatUtils.java

/**
 * Formats time elapsed since the given start time (in nanoseconds).
 *
 * @param startTimeNs start time in nanoseconds
 * @param message prefix for the message to be printed
 * @return formatted string with the elapsed time (in nanoseconds)
 *//*from   w  ww  . ja  v a2s.com*/
public static String formatTimeTakenNs(long startTimeNs, String message) {
    return message + " took " + (System.nanoTime() - startTimeNs) + " ns.";
}

From source file:oauth.signpost.impl.DefaultOAuthConsumer.java

private Map<String, String> buildOAuthParameterMap() {
    HashMap<String, String> map = new HashMap<String, String>();

    map.put(OAuth.OAUTH_CONSUMER_KEY, consumerKey);
    map.put(OAuth.OAUTH_SIGNATURE_METHOD, signatureMethod.toString());
    map.put(OAuth.OAUTH_TIMESTAMP, Long.toString(System.currentTimeMillis() / 1000L));
    map.put(OAuth.OAUTH_NONCE, Long.toString(System.nanoTime()));
    map.put(OAuth.OAUTH_VERSION, OAuth.VERSION_1_0);
    if (token != null) {
        map.put(OAuth.OAUTH_TOKEN, token);
    }//  w w  w .ja v  a 2  s .c o  m
    return map;
}