Example usage for java.util.concurrent.locks ReentrantLock ReentrantLock

Introduction

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

Prototype

public ReentrantLock()

Source Link

Document

Creates an instance of ReentrantLock .

Usage

From source file:com.vmware.identity.session.Session.java

/**
 * Construct the object//from w  w w  .  ja  v a2s  .  c om
 *
 * @param principalId
 * @param expireDate
 * @param authnMethod
 * @throws NoSuchAlgorithmException
 */
public Session(PrincipalId principalId, Date expireDate, AuthnMethod authnMethod)
        throws NoSuchAlgorithmException {
    Validate.notNull(principalId);
    Validate.notNull(expireDate);

    SecureRandomIdentifierGenerator generator = new SecureRandomIdentifierGenerator();
    this.id = generator.generateIdentifier();
    this.principalId = principalId;
    this.expireDate = expireDate;
    this.authnMethod = authnMethod;
    this.participants = new HashMap<String, SessionParticipant>();
    this.participantsByUrl = new HashMap<String, SessionParticipant>();
    this.lock = new ReentrantLock();
    this.usingExtIDP = false;
    this.extIDPUsed = null;
    this.extIDPSessionID = null;
}

From source file:org.ops4j.pax.runner.platform.internal.Activator.java

/**
 * Creates a new activator.
 */
public Activator() {
    m_lock = new ReentrantLock();
}

From source file:com.greplin.zookeeper.RobustZooKeeper.java

public RobustZooKeeper(String ensembleAddresses) throws IOException {
    this.reconnectCount = new AtomicInteger(-1); // start at -1 so that the initial connection doesn't count
    this.shutdown = new AtomicBoolean(false);
    this.reconnectLock = new ReentrantLock();
    this.ensembleAddress = ensembleAddresses;
    this.client = null;
    clientNumber = INSTANCE_COUNTER.incrementAndGet();
}

From source file:ai.grakn.engine.tasks.manager.StandaloneTaskManager.java

public StandaloneTaskManager(EngineID engineId) {
    this.engineID = engineId;
    instantiatedTasks = new ConcurrentHashMap<>();
    stateStorage = new TaskStateInMemoryStore();
    stateUpdateLock = new ReentrantLock();

    ConfigProperties properties = ConfigProperties.getInstance();
    schedulingService = Executors.newScheduledThreadPool(1);
    executorService = Executors.newFixedThreadPool(properties.getAvailableThreads());
}

From source file:org.apache.zookeeper.MockZooKeeper.java

public static MockZooKeeper newInstance(ExecutorService executor, int readOpDelayMs) {
    try {//from ww  w. j ava2s.c om

        sun.reflect.ReflectionFactory rf = sun.reflect.ReflectionFactory.getReflectionFactory();
        Constructor objDef = Object.class.getDeclaredConstructor(new Class[0]);
        Constructor intConstr = rf.newConstructorForSerialization(MockZooKeeper.class, objDef);
        MockZooKeeper zk = MockZooKeeper.class.cast(intConstr.newInstance());
        zk.init(executor);
        zk.readOpDelayMs = readOpDelayMs;
        zk.mutex = new ReentrantLock();
        return zk;
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception e) {
        throw new IllegalStateException("Cannot create object", e);
    }
}

From source file:ai.grakn.engine.backgroundtasks.standalone.StandaloneTaskManager.java

private StandaloneTaskManager() {
    instantiatedTasks = new ConcurrentHashMap<>();
    stateStorage = InMemoryStateStorage.getInstance();
    stateUpdateLock = new ReentrantLock();

    ConfigProperties properties = ConfigProperties.getInstance();
    schedulingService = Executors.newScheduledThreadPool(1);
    executorService = Executors.newFixedThreadPool(properties.getAvailableThreads());
}

From source file:org.ut.biolab.medsavant.server.db.LockController.java

/**
 * Obtain a lock. If another thread already owns the lock, an exception will
 * be thrown./*from   ww  w .ja  v  a  2  s  .  co  m*/
 *
 * @param database The database with the project to be unlocked.
 * @param projectID The project ID to lock
 * @throws LockException
 */
public synchronized void requestLock(String database, int projectID) throws LockException {
    LOG.info("Server lock requested");
    Key key = new Key(database, projectID);
    ReentrantLock lock = locks.get(key);

    // create the lock if one doesn't exist for the project
    if (lock == null) {
        lock = new ReentrantLock();
        locks.put(key, lock);
    }

    // lock it down 
    // (if this thread owns the lock, call lock again which will increase the hold count)
    if (!lock.isLocked() || lock.isHeldByCurrentThread()) {
        lock.lock();
        LOG.info(String.format("Server locked - hold count %d", lock.getHoldCount()));
    } else {
        throw new LockException("Database is locked for changes");
    }
}

From source file:org.wso2.carbon.sequences.SequenceAdminUtil.java

public static Lock getLock() throws SequenceEditorException {
    Parameter p = ConfigHolder.getInstance().getAxisConfiguration()
            .getParameter(ServiceBusConstants.SYNAPSE_CONFIG_LOCK);
    if (p != null) {
        return (Lock) p.getValue();
    } else {/*from   w w  w .  ja  va  2  s. c  o  m*/
        log.warn(ServiceBusConstants.SYNAPSE_CONFIG_LOCK + " is null, Recreating a new lock");
        Lock lock = new ReentrantLock();
        try {
            ConfigHolder.getInstance().getAxisConfiguration()
                    .addParameter(ServiceBusConstants.SYNAPSE_CONFIG_LOCK, lock);
            return lock;
        } catch (AxisFault axisFault) {
            log.error("Error while setting " + ServiceBusConstants.SYNAPSE_CONFIG_LOCK);
        }
    }

    return null;
}

From source file:com.swissbit.homeautomation.asyncTask.AuthenticationAsync.java

/**
 *Constructor/*from w  w w.j a  va 2 s . c  o m*/
 */
public AuthenticationAsync(Context context, final String rid) {
    this.mainActivity = (MainActivity) context;
    this.mainActivityContext = context;
    this.rid = rid;
    subscriptionResponse = false;
    lock = new ReentrantLock();
    condition = lock.newCondition();
}

From source file:org.apache.marmotta.platform.core.startup.MarmottaStartupService.java

@PostConstruct
public void initialise() {
    lock = new ReentrantLock();
}