Example usage for java.util.concurrent ScheduledFuture getDelay

Introduction

In this page you can find the example usage for java.util.concurrent ScheduledFuture getDelay.

Prototype

long getDelay(TimeUnit unit);

Source Link

Document

Returns the remaining delay associated with this object, in the given time unit.

Usage

From source file:com.bt.aloha.util.CollectionHelper.java

public static void destroy(ConcurrentMap<String, Map<String, Object>> transients, String classname) {
    log.debug(String.format("Destroy method called on collection: %s", classname));
    for (Map<String, Object> element : transients.values()) {
        ScheduledFuture<?> future = (ScheduledFuture<?>) element.get("future");
        if (future == null || future.isCancelled() || future.isDone())
            continue;
        if (future.getDelay(TimeUnit.MILLISECONDS) > ONE_HUNDRED) {
            future.cancel(true);/*from ww  w .ja v  a2  s.c o  m*/
            continue;
        }
        int counter = 0;
        while (!future.isDone() && counter++ < THREE) {
            try {
                log.debug("Waiting for future to get done for some call...");
                Thread.sleep(ONE_THOUSAND);
            } catch (InterruptedException e) {
                log.warn(e.getMessage());
                continue;
            }
        }
    }
}

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From source file:com.mgmtp.perfload.core.client.util.concurrent.DelayingExecutorServiceTest.java

@Test
public void testWithDelay() throws InterruptedException, BrokenBarrierException {
    DelayingExecutorService execSrv = new DelayingExecutorService();

    final StopWatch sw = new StopWatch();

    final CyclicBarrier stopBarrier = new CyclicBarrier(11, new Runnable() {
        @Override/*from   ww w .  j a va 2  s  .co m*/
        public void run() {
            sw.stop();
        }
    });

    sw.start();

    final long taskSleepMillis = 75L;
    long delayMultiplier = 50L;
    int loopMax = 10;

    for (int i = 0; i < loopMax; ++i) {
        Callable<Void> c = new Callable<Void>() {
            @Override
            public Void call() {
                try {
                    Thread.sleep(taskSleepMillis);
                    stopBarrier.await();
                } catch (Exception ex) {
                    throw new AssertionError(ex);
                }
                return null;
            }
        };

        long delay = delayMultiplier * i;

        ScheduledFuture<?> future = execSrv.schedule(c, delay, TimeUnit.MILLISECONDS);
        long actualDelay = future.getDelay(TimeUnit.MILLISECONDS);

        // compare with epsilon to make up for bad accuracy
        assertTrue(abs(delay - actualDelay) < EPSILON);
    }

    stopBarrier.await();

    long actualTime = sw.getTime();
    long expectedTime = delayMultiplier * (loopMax - 1) + taskSleepMillis;

    // compare with epsilon to make up for bad accuracy
    assertTrue(abs(actualTime - expectedTime) < EPSILON);
}

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From source file:com.mgmtp.perfload.core.client.util.concurrent.DelayingExecutorServiceTest.java

@Test
public void testWithoutDelay() throws InterruptedException, BrokenBarrierException {
    DelayingExecutorService execSrv = new DelayingExecutorService();

    final StopWatch sw = new StopWatch();

    final CyclicBarrier stopBarrier = new CyclicBarrier(11, new Runnable() {
        @Override/*w w w  .j  a v  a2 s . c  o  m*/
        public void run() {
            sw.stop();
        }
    });

    sw.start();

    for (int i = 0; i < 10; ++i) {
        Runnable r = new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(1L);
                    stopBarrier.await();
                } catch (Exception ex) {
                    throw new AssertionError(ex);
                }
            }
        };

        ScheduledFuture<?> future = execSrv.schedule(r, 0L, TimeUnit.NANOSECONDS);

        // compare with epsilon to make up for bad accuracy
        assertTrue(abs(future.getDelay(TimeUnit.MILLISECONDS)) < EPSILON);
    }

    stopBarrier.await();

    assertTrue(sw.getTime() < EPSILON);
}

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From source file:com.l2jfree.gameserver.gameobjects.L2Creature.java

/**
 * Disable this skill id for the duration of the delay in milliseconds.
 * //from w  ww  . j  a v  a2  s .c o m
 * @param skillId
 * @param delay in milliseconds
 * @return modified
 */
public boolean disableSkill(int skillId, int delay) {
    if (delay < 100)
        return false;

    if (_disabledSkills == null)
        _disabledSkills = new FastMap<Integer, ScheduledFuture<?>>();

    final ScheduledFuture<?> oldTask = _disabledSkills.get(skillId);

    if (oldTask != null) {
        if (oldTask.getDelay(TimeUnit.MILLISECONDS) + 50 >= delay)
            return false;

        oldTask.cancel(false);
    }

    _disabledSkills.put(skillId, ThreadPoolManager.getInstance().schedule(new EnableSkill(skillId), delay));
    return true;
}

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