Example usage for java.util.concurrent.locks Lock lock

Introduction

In this page you can find the example usage for java.util.concurrent.locks Lock lock.

Prototype

lock

Source Link

Usage

From source file:com.cloudera.oryx.ml.serving.als.model.ALSServingModel.java

void setUserVector(String user, float[] vector) {
    Preconditions.checkNotNull(vector);//from   w w w. j av  a2  s. c o m
    Preconditions.checkArgument(vector.length == features);
    Lock lock = xLock.writeLock();
    lock.lock();
    try {
        if (X.put(user, vector) == null) {
            // User was actually new
            recentNewUsers.add(user);
        }
    } finally {
        lock.unlock();
    }
}

From source file:org.springframework.integration.redis.util.RedisLockRegistryTests.java

@Test
@RedisAvailable//ww  w .  ja va 2  s.c o m
public void testReentrantLock() throws Exception {
    RedisLockRegistry registry = new RedisLockRegistry(this.getConnectionFactoryForTest(), this.registryKey);
    for (int i = 0; i < 10; i++) {
        Lock lock1 = registry.obtain("foo");
        lock1.lock();
        try {
            Lock lock2 = registry.obtain("foo");
            assertSame(lock1, lock2);
            lock2.lock();
            try {
                // just get the lock
            } finally {
                lock2.unlock();
            }
        } finally {
            lock1.unlock();
        }
    }
    assertNull(TestUtils.getPropertyValue(registry, "hardThreadLocks", ThreadLocal.class).get());
}

From source file:com.cloudera.oryx.ml.serving.als.model.ALSServingModel.java

public Map<String, Integer> getItemCounts() {
    ObjIntMap<String> counts = HashObjIntMaps.newUpdatableMap();
    Lock lock = xLock.readLock();
    lock.lock();
    try {//from w  w  w  .j a va 2 s .  c o m
        for (Collection<String> ids : knownItems.values()) {
            synchronized (ids) {
                for (String id : ids) {
                    counts.addValue(id, 1);
                }
            }
        }
    } finally {
        lock.unlock();
    }
    return counts;
}

From source file:com.cloudera.oryx.ml.serving.als.model.ALSServingModel.java

public float[] getItemVector(String item) {
    int partition = partition(item);
    Lock lock = yLocks[partition].readLock();
    lock.lock();
    try {/*from  w  w  w. ja v a 2  s.c o  m*/
        return Y[partition].get(item);
    } finally {
        lock.unlock();
    }
}

From source file:org.apache.lucene.gdata.search.index.IndexController.java

private void createNewIndexerTask(final ServerBaseEntry entry, final IndexAction action) {
    checkDestroyed();/*from w  w  w .j  ava2 s .  com*/
    checkInitialized();
    String serviceName = entry.getServiceConfig().getName();
    if (LOG.isInfoEnabled())
        LOG.info("New Indexer Task submitted - Action: " + action + " for service: " + serviceName);
    ServiceIndex bean = this.indexerMap.get(serviceName);
    if (bean == null)
        throw new RuntimeException("no indexer for service " + serviceName + " registered");
    /*
     * lock on service to synchronize the event order. This lock has
     * fairness parameter set to true. Grant access to the longest waiting
     * thread. Using fairness is slower but is acceptable in this context
     */
    Lock lock = bean.getLock();
    lock.lock();
    try {
        IndexSchema schema = bean.getSchema();
        boolean commitAfter = bean.incrementActionAndReset(schema.getCommitAfterDocuments());
        IndexDocumentBuilder<IndexDocument> callable = new IndexDocumentBuilderTask<IndexDocument>(entry,
                bean.getSchema(), action, commitAfter, bean.getOptimize(schema.getOptimizeAfterCommit()));
        sumbitTask(callable, bean.getIndexer());
    } finally {
        /*
         * make sure to unlock
         */
        lock.unlock();
    }

}

From source file:org.springframework.integration.redis.util.RedisLockRegistryTests.java

@Test
@RedisAvailable//  w ww.  j av a2s .  c  o  m
public void testThreadLocalListLeaks() {
    RedisLockRegistry registry = new RedisLockRegistry(this.getConnectionFactoryForTest(), this.registryKey,
            100);
    registry.setUseWeakReferences(true);

    for (int i = 0; i < 10; i++) {
        registry.obtain("foo" + i);
    }
    assertNull(TestUtils.getPropertyValue(registry, "hardThreadLocks", ThreadLocal.class).get());

    for (int i = 0; i < 10; i++) {
        Lock lock = registry.obtain("foo" + i);
        lock.lock();
    }
    assertEquals(10,
            ((Collection<?>) TestUtils.getPropertyValue(registry, "hardThreadLocks", ThreadLocal.class).get())
                    .size());
    assertNull(TestUtils.getPropertyValue(registry, "weakThreadLocks", ThreadLocal.class).get());

    for (int i = 0; i < 10; i++) {
        Lock lock = registry.obtain("foo" + i);
        assertNotNull(TestUtils.getPropertyValue(lock, "thread", Thread.class));
        lock.unlock();
    }
    assertNull(TestUtils.getPropertyValue(registry, "hardThreadLocks", ThreadLocal.class).get());
}

From source file:com.cloudera.oryx.ml.serving.als.model.ALSServingModel.java

void setItemVector(String item, float[] vector) {
    Preconditions.checkNotNull(vector);/*  w  w w  . j  av  a 2  s  . c o  m*/
    Preconditions.checkArgument(vector.length == features);
    int partition = partition(item);
    Lock lock = yLocks[partition].writeLock();
    lock.lock();
    try {
        if (Y[partition].put(item, vector) == null) {
            // Item was actually new
            recentNewItems[partition].add(item);
        }
    } finally {
        lock.unlock();
    }
}

From source file:com.cloudera.oryx.ml.serving.als.model.ALSServingModel.java

public Collection<String> getAllItemIDs() {
    Collection<String> itemsList = new ArrayList<>();
    for (int partition = 0; partition < Y.length; partition++) {
        Lock lock = yLocks[partition].readLock();
        lock.lock();
        try {/*from  ww w  .  j ava 2 s. com*/
            itemsList.addAll(Y[partition].keySet());
        } finally {
            lock.unlock();
        }
    }
    return itemsList;
}

From source file:net.myrrix.online.ServerRecommender.java

private static FastIDSet getIDsFromKeys(FastByIDMap<float[]> map, Lock readLock, FastIDSet tagIDs) {
    readLock.lock();
    try {/*w w w.  ja  va2 s  .c  o  m*/
        FastIDSet ids = new FastIDSet(map.size());
        LongPrimitiveIterator it = map.keySetIterator();
        while (it.hasNext()) {
            long id = it.nextLong();
            if (!tagIDs.contains(id)) {
                ids.add(id);
            }
        }
        return ids;
    } finally {
        readLock.unlock();
    }
}

From source file:DemandCache.java

/**
 * @see java.util.Map#containsKey(java.lang.Object)
 *///from  w  w w .j  a  v a  2 s.c  om
public boolean containsKey(Object key) {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        return theCache.containsKey(key);
    } finally {
        lock.unlock();
    }
}