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:edu.internet2.middleware.shibboleth.common.relyingparty.provider.SAMLMDRelyingPartyConfigurationManager.java

/**
 * Gets the metadata provider used to lookup information about entities.
 * // www .  j  a  v  a  2s.  c o m
 * @return metadata provider used to lookup information about entities
 */
public MetadataProvider getMetadataProvider() {
    Lock readLock = getReadWriteLock().readLock();
    readLock.lock();
    try {
        return metadataProvider;
    } finally {
        readLock.unlock();
    }
}

From source file:org.mule.transport.ConcurrentWorkTracker.java

public void removeWork(Runnable work) {
    Lock lock = registryLock.writeLock();

    try {/*from w  w  w  .j  av a 2s. c  om*/
        if (logger.isDebugEnabled()) {
            logger.debug("Untracking work: " + work);
        }

        lock.lock();
        works.remove(work);
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#get(java.lang.Object)
 *//*  w  w  w  .j  av a  2s  .  c o m*/
public V get(Object key) {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        KeyedSoftReference<V> val = theCache.get(key);
        return val == null ? null : val.get();
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#clear()/*ww  w .j  a  v a  2  s .  c  o  m*/
 */
public void clear() {
    Lock lock = theLock.writeLock();
    lock.lock();
    try {
        theCache.clear();
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#containsKey(java.lang.Object)
 *//*from   ww w . j  ava 2 s . c o m*/
public boolean containsKey(Object key) {
    Lock lock = theLock.readLock();
    lock.lock();
    try {
        KeyedSoftReference<V> val = theCache.get(key);
        return val == null || val.isEnqueued();
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#remove(java.lang.Object)
 */// w w  w. j av a 2s.  com
public V remove(Object key) {
    Lock lock = theLock.writeLock();
    lock.lock();
    try {
        removeQueued();
        KeyedSoftReference<V> val = theCache.remove(key);
        return val == null ? null : val.get();
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#put(java.lang.Object, java.lang.Object)
 *//*from   ww w. j  a v a 2  s.com*/
public V put(K key, V value) {
    Lock lock = theLock.writeLock();
    lock.lock();
    try {
        removeQueued();
        KeyedSoftReference<V> val = theCache.get(key);
        theCache.put(key, new KeyedSoftReference<V>(key, value, theRefQueue));
        return val == null ? null : val.get();
    } finally {
        lock.unlock();
    }
}

From source file:SoftReferenceCache.java

/**
 * @see java.util.Map#putAll(java.util.Map)
 *//*  ww w  . j  a  v a2  s . c o m*/
public void putAll(Map<? extends K, ? extends V> m) {
    Lock lock = theLock.writeLock();
    lock.lock();
    try {
        removeQueued();
        for (java.util.Map.Entry<? extends K, ? extends V> entry : m.entrySet()) {
            theCache.put(entry.getKey(),
                    new KeyedSoftReference<V>(entry.getKey(), entry.getValue(), theRefQueue));
        }
    } finally {
        lock.unlock();
    }
}

From source file:edu.internet2.middleware.shibboleth.idp.profile.IdPProfileHandlerManager.java

/** {@inheritDoc} */
public ProfileHandler getProfileHandler(ServletRequest request) {
    ProfileHandler handler;/*from ww  w.  j  a  va 2s  .  co m*/

    String requestPath = ((HttpServletRequest) request).getPathInfo();
    log.debug("{}: Looking up profile handler for request path: {}", getId(), requestPath);

    Lock readLock = getReadWriteLock().readLock();
    readLock.lock();
    try {
        handler = profileHandlers.get(requestPath);
    } finally {
        readLock.unlock();
    }

    if (handler != null) {
        log.debug("{}: Located profile handler of the following type for the request path: {}", getId(),
                handler.getClass().getName());
    } else {
        log.debug("{}: No profile handler registered for request path {}", getId(), requestPath);
    }
    return handler;
}

From source file:com.ignorelist.kassandra.steam.scraper.FileCache.java

@Override
public InputStream get(String key, Callable<? extends InputStream> valueLoader) throws ExecutionException {
    InputStream inputStream = getIfPresent(key);
    if (null != inputStream) {
        return inputStream;
    }//  w ww. j  a v  a 2s .  c  o m
    final Lock writeLock = stripedLock.get(key).writeLock();
    writeLock.lock();
    try {
        inputStream = getIfPresentNonBlocking(key);
        if (null != inputStream) {
            return inputStream;
        }
        try {
            inputStream = valueLoader.call();
            try {
                putNonBlocking(key, inputStream);
                return getIfPresentNonBlocking(key);
            } catch (IOException ex) {
                Logger.getLogger(FileCache.class.getName()).log(Level.SEVERE, "failed to write cache file", ex);
                throw new ExecutionException("failed to load " + key, ex);
            }
        } catch (Exception e) {
            Logger.getLogger(FileCache.class.getName()).log(Level.SEVERE, null, e);
            throw new ExecutionException(e);
        }
    } finally {
        writeLock.unlock();
    }

}