Example usage for java.lang Thread yield

Introduction

In this page you can find the example usage for java.lang Thread yield.

Prototype

public static native void yield();

Source Link

Document

A hint to the scheduler that the current thread is willing to yield its current use of a processor.

Usage

From source file:Main.java

@Override
public void run() {
    try {//from   w w  w. ja  v a 2  s  . com
        while (true) {
            queue.take();
            System.out.println("Took item " + m_count.incrementAndGet());
            final long start = System.currentTimeMillis();
            while ((System.currentTimeMillis() - start) < 100) {
                Thread.yield(); // Spin wait
            }
        }
    } catch (Exception ex) {
        System.out.println("Interrupted. Count: " + m_count.get());
    }
}

From source file:com.auditbucket.helper.DeadlockRetry.java

public static Command execute(Command command, String block, int maxRetry) throws DatagioException {
    // Deadlock re-try fun
    int retryCount = 0;
    while (retryCount < maxRetry) {
        try {/*  ww  w  .ja  v  a 2  s .c o  m*/
            return command.execute();
        } catch (RuntimeException re) {
            // ToDo: Exceptions getting wrapped in a JedisException. Can't directly catch the DDE hence the instanceof check
            if (re.getCause() instanceof NotFoundException || re.getCause() instanceof DeadlockDetectedException
                    || re.getCause() instanceof InvalidDataAccessResourceUsageException
                    || re.getCause() instanceof DataRetrievalFailureException) {
                logger.debug("Deadlock Detected. Entering retry [{}]", block);
                Thread.yield();
                retryCount++;
                if (retryCount == maxRetry) {
                    // http://www.slideshare.net/neo4j/zephyr-neo4jgraphconnect-2013short
                    logger.error("Deadlock retries exceeded in [{}]", block);
                    throw (re);
                }
            } else {
                logger.error("DeadlockRetry error could not be handled {}", re.getMessage());
                throw (re);
            }
        }
    }
    return null;
}

From source file:com.thoughtworks.go.plugin.infra.monitor.AbstractDefaultPluginJarLocationMonitorTest.java

protected void waitAMoment() throws InterruptedException {
    Thread.yield();
    Thread.sleep(2000);
}

From source file:org.apache.streams.util.ComponentUtils.java

/**
 * Certain types of queues will return null when calling {@link java.util.Queue#poll()} due to many factors depending
 * on the type of queue.  <code>pollWhileNotEmpty</code> will poll the queue until an item from the queue is returned
 * or the queue is empty.  If the queue is empty it will return NULL.
 * @param queue//from  w  w  w  .j  a  v a  2  s.c  o  m
 * @param <T>
 * @return
 */
public static <T> T pollWhileNotEmpty(Queue<T> queue) {
    T item = queue.poll();
    while (!queue.isEmpty() && item == null) {
        Thread.yield();
        item = queue.poll();
    }
    return item;
}

From source file:Main.java

/**
 * Compute e^x to a given scale.//from w w w. j a v  a  2s.  c o m
 * Break x into its whole and fraction parts and
 * compute (e^(1 + fraction/whole))^whole using Taylor's formula.
 * @param x the value of x
 * @param scale the desired scale of the result
 * @return the result value
 */
public static BigDecimal exp(BigDecimal x, int scale) {
    // e^0 = 1
    if (x.signum() == 0) {
        return BigDecimal.valueOf(1);
    }

    // If x is negative, return 1/(e^-x).
    else if (x.signum() == -1) {
        return BigDecimal.valueOf(1).divide(exp(x.negate(), scale), scale, BigDecimal.ROUND_HALF_EVEN);
    }

    // Compute the whole part of x.
    BigDecimal xWhole = x.setScale(0, BigDecimal.ROUND_DOWN);

    // If there isn't a whole part, compute and return e^x.
    if (xWhole.signum() == 0)
        return expTaylor(x, scale);

    // Compute the fraction part of x.
    BigDecimal xFraction = x.subtract(xWhole);

    // z = 1 + fraction/whole
    BigDecimal z = BigDecimal.valueOf(1).add(xFraction.divide(xWhole, scale, BigDecimal.ROUND_HALF_EVEN));

    // t = e^z
    BigDecimal t = expTaylor(z, scale);

    BigDecimal maxLong = BigDecimal.valueOf(Long.MAX_VALUE);
    BigDecimal result = BigDecimal.valueOf(1);

    // Compute and return t^whole using intPower().
    // If whole > Long.MAX_VALUE, then first compute products
    // of e^Long.MAX_VALUE.
    while (xWhole.compareTo(maxLong) >= 0) {
        result = result.multiply(intPower(t, Long.MAX_VALUE, scale)).setScale(scale,
                BigDecimal.ROUND_HALF_EVEN);
        xWhole = xWhole.subtract(maxLong);

        Thread.yield();
    }
    return result.multiply(intPower(t, xWhole.longValue(), scale)).setScale(scale, BigDecimal.ROUND_HALF_EVEN);
}

From source file:org.sipfoundry.sipxconfig.common.BackgroundTaskQueue.java

/**
 * This is one of the methods that can be used to actively wait till queue is empty Do not use
 * it unless you need it in testing./*from   w  w w . j a  v a  2  s .  c o m*/
 */
public void yieldTillEmpty() {
    Runnable sentinel = new Runnable() {
        public void run() {
            // do nothing
        }
    };
    m_queue.add(sentinel);
    while (!m_queue.isEmpty()) {
        Thread.yield();
    }
}

From source file:MainClass.java

public void run() {

    try {/*w  ww.j ava 2s .  c om*/
        BufferedReader userInput = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            if (stopped)
                return;
            String theLine = userInput.readLine();
            if (theLine.equals("."))
                break;
            byte[] data = theLine.getBytes();
            DatagramPacket output = new DatagramPacket(data, data.length, server, port);
            socket.send(output);
            Thread.yield();
        }
    } catch (IOException ex) {
        System.err.println(ex);
    }
}

From source file:com.ottogroup.bi.asap.component.strategy.YieldMessageWaitStrategy.java

/**
 * @see com.mnxfst.distos.strategy.MessageWaitStrategy#waitFor()
 */
public void waitFor() throws InterruptedException {
    Thread.yield();
}

From source file:com.thoughtworks.go.plugin.infra.monitor.AbstractDefaultPluginJarLocationMonitorTest.java

protected void waitUntilNextRun(DefaultPluginJarLocationMonitor monitor) throws InterruptedException {
    long previousRun = monitor.getLastRun();
    int numberOfTries = 0;
    while (previousRun >= monitor.getLastRun() && numberOfTries < NO_OF_TRIES_TO_CHECK_MONITOR_RUN) {
        Thread.yield();
        Thread.sleep(500);//www.ja v  a2 s  .  c om
        numberOfTries++;
    }
    if (numberOfTries >= NO_OF_TRIES_TO_CHECK_MONITOR_RUN) {
        throw new RuntimeException("Number of tries exceeded, but monitor thread hasn't run yet");
    }
}

From source file:org.apache.streams.util.ComponentUtils.java

public static String pollUntilStringNotEmpty(Queue queue) {

    String result = null;//from w w  w.  ja v a 2  s .  c o m
    do {
        synchronized (ComponentUtils.class) {
            try {
                result = (String) queue.remove();
            } catch (Exception e) {
            }
        }
        Thread.yield();
    } while (result == null && !StringUtils.isNotEmpty(result));

    return result;
}