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

Introduction

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

Prototype

void unlock();

Source Link

Document

Releases the lock.

Usage

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

public List<Pair<String, Double>> topN(final DoubleFunction<float[]> scoreFn, final int howMany,
        final Predicate<String> allowedPredicate) {

    List<Callable<Iterable<Pair<String, Double>>>> tasks = new ArrayList<>(Y.length);
    for (int partition = 0; partition < Y.length; partition++) {
        final int thePartition = partition;
        tasks.add(new LoggingCallable<Iterable<Pair<String, Double>>>() {
            @Override//from w ww .j a v  a  2  s  .com
            public Iterable<Pair<String, Double>> doCall() {
                Queue<Pair<String, Double>> topN = new PriorityQueue<>(howMany + 1,
                        PairComparators.<Double>bySecond());
                TopNConsumer topNProc = new TopNConsumer(topN, howMany, scoreFn, allowedPredicate);

                Lock lock = yLocks[thePartition].readLock();
                lock.lock();
                try {
                    Y[thePartition].forEach(topNProc);
                } finally {
                    lock.unlock();
                }
                // Ordering and excess items don't matter; will be merged and finally sorted later
                return topN;
            }
        });
    }

    List<Iterable<Pair<String, Double>>> iterables = new ArrayList<>();
    if (Y.length >= 2) {
        try {
            for (Future<Iterable<Pair<String, Double>>> future : executor.invokeAll(tasks)) {
                iterables.add(future.get());
            }
        } catch (InterruptedException e) {
            throw new IllegalStateException(e);
        } catch (ExecutionException e) {
            throw new IllegalStateException(e.getCause());
        }
    } else {
        try {
            iterables.add(tasks.get(0).call());
        } catch (Exception e) {
            throw new IllegalStateException(e);
        }
    }

    return Ordering.from(PairComparators.<Double>bySecond()).greatestOf(Iterables.concat(iterables), howMany);
}

From source file:com.mastfrog.netty.http.client.CookieStore.java

public void store(OutputStream out) throws IOException {
    ObjectMapper om = new ObjectMapper();
    Lock readLock = lock.readLock();
    List<DateCookie> cks = new ArrayList<>();
    readLock.lock();/* www.jav a2  s.  c om*/
    try {
        cks.addAll(cookies);
    } finally {
        readLock.unlock();
    }
    List<Map<String, Object>> list = new LinkedList<>();
    for (DateCookie ck : cks) {
        Map<String, Object> m = new HashMap<>();
        m.put("domain", ck.getDomain());
        m.put("maxAge", ck.getMaxAge());
        m.put("timestamp", ck.getTimestamp().getMillis());
        m.put("path", ck.getPath());
        m.put("name", ck.getName());
        m.put("value", ck.getValue());
        m.put("httpOnly", ck.isHttpOnly());
        m.put("secure", ck.isSecure());
        if (ck.getComment() != null) {
            m.put("comment", ck.getComment());
        }
        if (ck.getCommentUrl() != null) {
            m.put("commentUrl", ck.getCommentUrl());
        }
        if (ck.getPorts() != null && !ck.getPorts().isEmpty()) {
            m.put("ports", ck.getPorts().toArray(new Integer[0]));
        }
        list.add(m);
    }
    om.writeValue(out, list);
}

From source file:com.mastfrog.netty.http.client.CookieStore.java

@SuppressWarnings("unchecked")
public void read(InputStream in) throws IOException {
    ObjectMapper om = new ObjectMapper();
    List<Map<String, Object>> l = om.readValue(in, List.class);
    List<DateCookie> cks = new ArrayList<>();
    for (Map<String, Object> m : l) {
        String domain = (String) m.get("domain");
        Number maxAge = (Number) m.get("maxAge");
        Number timestamp = (Number) m.get("timestamp");
        String path = (String) m.get("path");
        String name = (String) m.get("name");
        String value = (String) m.get("value");
        Boolean httpOnly = (Boolean) m.get("httpOnly");
        Boolean secure = (Boolean) m.get("secure");
        String comment = (String) m.get("comment");
        String commentUrl = (String) m.get("commentUrl");
        List<Integer> ports = (List<Integer>) m.get("ports");
        DateTime ts = timestamp == null ? DateTime.now() : new DateTime(timestamp.longValue());
        DateCookie cookie = new DateCookie(new DefaultCookie(name, value), ts);
        if (cookie.isExpired()) {
            continue;
        }/*from  www.  j av a  2  s  .  c  om*/
        if (domain != null) {
            cookie.setDomain(domain);
        }
        if (maxAge != null) {
            cookie.setMaxAge(maxAge.longValue());
        }
        if (path != null) {
            cookie.setPath(path);
        }
        if (httpOnly != null) {
            cookie.setHttpOnly(httpOnly);
        }
        if (secure != null) {
            cookie.setSecure(secure);
        }
        if (comment != null) {
            cookie.setComment(comment);
        }
        if (commentUrl != null) {
            cookie.setCommentUrl(commentUrl);
        }
        if (ports != null) {
            cookie.setPorts(ports);
        }
        cks.add(cookie);
    }
    if (!cks.isEmpty()) {
        Lock writeLock = lock.writeLock();
        try {
            writeLock.lock();
            cookies.addAll(cks);
        } finally {
            writeLock.unlock();
        }
    }
}

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

void setItemVector(String item, float[] vector) {
    Preconditions.checkNotNull(vector);/*w  ww. j a  v 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:DemandCache.java

/**
 * @return The total size of the data in this cache, according to
 *         {@link Qualitizer#size(Object)}. This value will return the same as {@link #size()}
 *         if the qualitizer was not set in the constructor.
 *//* www  .  jav a 2 s .  c o  m*/
public float getTotalSize() {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        float ret = 0;
        for (CacheValue value : theCache.values())
            ret += theQualitizer.size(value.value);
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:org.apache.bookkeeper.bookie.EntryLogManagerForEntryLogPerLedger.java

@Override
void createNewLog(long ledgerId) throws IOException {
    Lock lock = getLock(ledgerId);
    lock.lock();/* w  w w .j  a va2  s  . co m*/
    try {
        super.createNewLog(ledgerId);
    } finally {
        lock.unlock();
    }
}

From source file:DemandCache.java

/**
 * @see java.util.Map#get(java.lang.Object)
 *//* ww w .j av  a2s .co  m*/
public V get(Object key) {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        CacheValue value = theCache.get(key);
        if (value == null)
            return null;
        _access(value, ACCESS_GET);
        return value.value;
    } finally {
        lock.unlock();
    }
}

From source file:DemandCache.java

/**
 * @return The average quality of the values in this cache, according to
 *         {@link Qualitizer#quality(Object)}. This value will return 1 if the qualitizer was
 *         not set in the constructor./* w w  w . j av a2  s  .  co  m*/
 */
public float getOverallQuality() {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        float ret = 0;
        for (CacheValue value : theCache.values())
            ret += theQualitizer.quality(value.value);
        return ret / theCache.size();
    } finally {
        lock.unlock();
    }
}

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

/**
 * Prunes the set of users in the model, by retaining only users that are expected to appear
 * in the upcoming model updates, or, that have arrived recently. This also clears the
 * recent known users data structure./*from  ww  w . ja  v  a  2 s .  c  o  m*/
 *
 * @param users users that should be retained, which are coming in the new model updates
 */
void pruneX(Collection<String> users) {
    // Keep all users in the new model, or, that have been added since last model
    Lock lock = xLock.writeLock();
    lock.lock();
    try {
        X.removeIf(new KeyOnlyBiPredicate<>(new AndPredicate<>(new NotContainsPredicate<>(users),
                new NotContainsPredicate<>(recentNewUsers))));
        recentNewUsers.clear();
    } finally {
        lock.unlock();
    }
}

From source file:org.archive.modules.recrawl.hbase.SingleHBaseTable.java

/**
 * close current connection and establish new connection.
 * fails silently if back-off period is in effect.
 *//*from   w w w  .j  a v  a 2s  . c o m*/
protected void reconnect(boolean onerror) throws IOException, InterruptedException {
    // avoid deadlock situation caused by attempting
    // to acquire write lock while holding read lock.
    // there'd be no real dead-lock now that timeout on write lock is implemented,
    // but it's nice to know there's a bug in locking.
    if (tableUseLock.getReadHoldCount() > 0) {
        LOG.warn("avoiding deadlock: reconnect() called by thread with read lock.");
        return;
    }
    Lock writeLock = tableUseLock.writeLock();
    if (!writeLock.tryLock(TRY_WRITE_LOCK_TIMEOUT, TimeUnit.SECONDS)) {
        LOG.warn("reconnect() could not acquire write lock on tableUseLock for " + TRY_WRITE_LOCK_TIMEOUT
                + "s, giving up.");
        return;
    }
    try {
        closeTable(table, onerror);
        openTable();
    } finally {
        writeLock.unlock();
    }
}