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.linkedin.pinot.controller.utils.SegmentMetadataMockUtils.java

public static SegmentMetadata mockSegmentMetadata(String tableName, String segmentName) {
    String uniqueNumericString = Long.toString(System.nanoTime());
    return mockSegmentMetadata(tableName, segmentName, 0, uniqueNumericString);
}

From source file:io.kahu.hawaii.util.call.statistics.RequestStatistic.java

public void startBackendRequest() {
    this.startCallNano = System.nanoTime();
}

From source file:Main.java

@Override
public String call() throws Exception {
    while (timeToLive <= System.nanoTime()) {
        // simulate work here
        Thread.sleep(500);/*from  w  w w.  ja  v  a2s.  com*/
    }
    final long end = System.nanoTime();
    return String.format("Finished Elapsed Time = %d, scheduled for %d",
            TimeUnit.NANOSECONDS.toMillis(timeToLive - end), this.duration);
}

From source file:tern.server.nodejs.NodejsTernHelper.java

public static JsonObject makeRequest(String baseURL, TernDoc doc, boolean silent,
        List<IInterceptor> interceptors, ITernServer server) throws IOException, TernException {
    TernQuery query = doc.getQuery();/*from   w ww . j a v  a 2 s . c o  m*/
    String methodName = query != null ? query.getLabel() : "";
    long startTime = 0;
    if (interceptors != null) {
        startTime = System.nanoTime();
        for (IInterceptor interceptor : interceptors) {
            interceptor.handleRequest(doc, server, methodName);
        }
    }
    HttpClient httpClient = new DefaultHttpClient();
    try {
        // Post JSON Tern doc
        HttpPost httpPost = createHttpPost(baseURL, doc);
        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity entity = httpResponse.getEntity();
        InputStream in = entity.getContent();
        // Check the status
        StatusLine statusLine = httpResponse.getStatusLine();
        int statusCode = statusLine.getStatusCode();
        if (statusCode != HttpStatus.SC_OK) {
            // node.js server throws error
            String message = IOUtils.toString(in);
            if (StringUtils.isEmpty(message)) {
                throw new TernException(statusLine.toString());
            }
            throw TernExceptionFactory.create(message);
        }

        try {
            JsonObject response = (JsonObject) Json.parse(new InputStreamReader(in, UTF_8));
            if (interceptors != null) {
                for (IInterceptor interceptor : interceptors) {
                    interceptor.handleResponse(response, server, methodName, getElapsedTimeInMs(startTime));
                }
            }
            return response;
        } catch (ParseException e) {
            throw new IOException(e);
        }
    } catch (Exception e) {
        if (interceptors != null) {
            for (IInterceptor interceptor : interceptors) {
                interceptor.handleError(e, server, methodName, getElapsedTimeInMs(startTime));
            }
        }
        if (e instanceof IOException) {
            throw (IOException) e;
        }
        if (e instanceof TernException) {
            throw (TernException) e;
        }
        throw new TernException(e);
    } finally {
        httpClient.getConnectionManager().shutdown();
    }
}

From source file:com.amazonaws.metrics.ServiceLatencyProvider.java

/**
 * Ends the timing.  Must not be called more than once.
 *//* w ww .  jav a2s  . c  o m*/
public ServiceLatencyProvider endTiming() {
    if (endNano != startNano) {
        throw new IllegalStateException();
    }
    endNano = System.nanoTime();
    return this;
}

From source file:com.heliosmi.portal.aspect.LoggingAspect.java

@Around("allBeans()")
public Object profiler(ProceedingJoinPoint pjp) throws Throwable {

    long start = System.nanoTime();
    String classMethodName = pjp.getTarget().getClass().getSimpleName() + "." + pjp.getSignature().getName();
    log.info(classMethodName + " - called with param(s) " + ToStringBuilder.reflectionToString(pjp.getArgs()));

    Object returnValue = null;//  ww w.j a v  a2s. c o m
    try {
        returnValue = pjp.proceed();
    } catch (Exception exception) {
        log.error(ToStringBuilder.reflectionToString(ExceptionUtils.getRootCause(exception)));
        log.error(ExceptionUtils.getStackTrace(exception));
        throw exception;
    }

    long end = System.nanoTime();
    log.info(classMethodName + " - finished. Took " + (end - start) + " milliseconds. ");

    return returnValue;
}

From source file:com.norconex.collector.http.delay.impl.CrawlerDelay.java

public void delay(long expectedDelayNanos, String url) {
    if (expectedDelayNanos <= 0) {
        return;/*from  w  ww  . j  a  v  a  2 s.c om*/
    }
    try {
        synchronized (lastHitEpochNanos) {
            while (sleeping) {
                Sleeper.sleepNanos(Math.min(TINY_SLEEP_MS, expectedDelayNanos));
            }
            sleeping = true;
        }
        delay(expectedDelayNanos, lastHitEpochNanos.longValue());
        lastHitEpochNanos.setValue(System.nanoTime());
    } finally {
        sleeping = false;
    }
}

From source file:io.kahu.hawaii.util.call.statistics.RequestStatistic.java

public void endBackendRequest() {
    this.endCallNano = System.nanoTime();
}

From source file:org.elasticsearch.logstash.Server.java

public void start() throws InterruptedException {

    long start = System.nanoTime();

    AtomicInteger counter = new AtomicInteger(1);

    for (int i = 0; i < messageCount; i++) {
        /* wait for input -- e.g. wait on a NETTY pipeline input */
        //        JokeResource jokeResource = restTemplate.getForObject("http://api.icndb.com/jokes/random", JokeResource.class);

        final String message = String.format("message: %d", counter.getAndIncrement());
        inputReactor.notify(Pipeline.Stage.input, Event.wrap(message));
    }//w w w  .  j a v a  2s .  c o  m

    latch.await();
    long elapsed = System.nanoTime() - start;

    System.out.println("Elapsed time: " + elapsed + "ns");
    System.out.println("Average pipeline process time per message: " + elapsed / messageCount + "ns");
}

From source file:com.temenos.interaction.loader.detector.DirectoryChangeActionNotifierTest.java

public static File createTempDirectory() throws IOException {
    final File temp;
    File tempDir = new File(System.getProperty("java.io.tmpdir"));
    temp = new File(tempDir, "test" + System.nanoTime());

    if (!(temp.mkdirs())) {
        throw new IOException("Could not create temporary test dir");
    }/*from w  ww.  java 2 s.c  o  m*/

    return (temp);
}