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.amazonaws.mobile.client.AWSMobileClient.java

/**
 * Constructor invoked by getInstance./*  www  .j  ava  2  s. com*/
 *
 * @throws AssertionError when this is called with context more than once.
 */
private AWSMobileClient() {
    if (singleton != null) {
        throw new AssertionError();
    }
    this.clientMap = new LinkedHashMap<Class<? extends AWSConfigurable>, AWSConfigurable>();
    userpoolsLoginKey = "";
    mWaitForSignInLock = new ReentrantLock();
    mFederatedLoginsMap = new HashMap<String, String>();
    listeners = new ArrayList<UserStateListener>();
    showSignInLockObject = new Object();
    federateWithCognitoIdentityLockObject = new Object();
    showSignInWaitLatch = new CountDownLatch(1);
    initLockObject = new Object();
}

---

From source file:com.thoughtworks.studios.journey.JourneyService.java

private static Lock getWritingLock(String ns) {
    Lock lock = new ReentrantLock();
    Lock existingLock = writingLocks.putIfAbsent(ns, lock);
    if (existingLock != null) {
        lock = existingLock;/*from  w ww.j  av  a  2 s.c o m*/
    }
    return lock;
}

---

From source file:org.apache.lens.driver.hive.HiveDriver.java

/**
 * Instantiates a new hive driver./*from  w ww . ja  v a2  s .  c  o  m*/
 *
 * @throws LensException the lens exception
 */
public HiveDriver() throws LensException {
    this.sessionLock = new ReentrantLock();
    lensToHiveSession = new HashMap<>();
    opHandleToSession = new ConcurrentHashMap<>();
    orphanedHiveSessions = new ConcurrentLinkedQueue<>();
    resourcesAddedForSession = new HashMap<>();
    connectionExpiryThread.setDaemon(true);
    connectionExpiryThread.setName("HiveDriver-ConnectionExpiryThread");
    connectionExpiryThread.start();
    driverListeners = new ArrayList<LensEventListener<DriverEvent>>();
    log.info("Hive driver inited");
}

---

From source file:com.cyberway.issue.crawler.framework.CrawlController.java

/**
 * Starting from nothing, set up CrawlController and associated
 * classes to be ready for a first crawl.
 *
 * @param sH Settings handler.//  www . ja v  a 2  s.  c  om
 * @throws InitializationException
 */
public void initialize(SettingsHandler sH) throws InitializationException {
    sendCrawlStateChangeEvent(PREPARING, CrawlJob.STATUS_PREPARING);

    this.singleThreadLock = new ReentrantLock();
    this.settingsHandler = sH;
    installThreadContextSettingsHandler();
    this.order = settingsHandler.getOrder();
    this.order.setController(this);
    this.bigmaps = new Hashtable<String, CachedBdbMap<?, ?>>();
    sExit = "";
    this.manifest = new StringBuffer();
    String onFailMessage = "";
    try {
        onFailMessage = "You must set the User-Agent and From HTTP" + " header values to acceptable strings. \n"
                + " User-Agent: [software-name](+[info-url])[misc]\n" + " From: [email-address]\n";
        order.checkUserAgentAndFrom();

        onFailMessage = "Unable to setup disk";
        if (disk == null) {
            setupDisk();
        }

        onFailMessage = "Unable to create log file(s)";
        setupLogs();

        // Figure if we're to do a checkpoint restore. If so, get the
        // checkpointRecover instance and then put into place the old bdb
        // log files. If any of the log files already exist in target state
        // diretory, WE DO NOT OVERWRITE (Makes for faster recovery).
        // CrawlController checkpoint recovery code manages restoration of
        // the old StatisticsTracker, any BigMaps used by the Crawler and
        // the moving of bdb log files into place only. Other objects
        // interested in recovery need to ask if
        // CrawlController#isCheckpointRecover is set to figure if in
        // recovery and then take appropriate recovery action
        // (These objects can call CrawlController#getCheckpointRecover
        // to get the directory that might hold files/objects dropped
        // checkpointing).  Such objects will need to use a technique other
        // than object serialization restoring settings because they'll
        // have already been constructed when comes time for object to ask
        // if its to recover itself. See ARCWriterProcessor for example.
        onFailMessage = "Unable to test/run checkpoint recover";
        this.checkpointRecover = getCheckpointRecover();
        if (this.checkpointRecover == null) {
            this.checkpointer = new Checkpointer(this, this.checkpointsDisk);
        } else {
            setupCheckpointRecover();
        }

        onFailMessage = "Unable to setup bdb environment.";
        setupBdb();

        onFailMessage = "Unable to setup statistics";
        setupStatTracking();

        onFailMessage = "Unable to setup crawl modules";
        setupCrawlModules();
    } catch (Exception e) {
        String tmp = "On crawl: " + settingsHandler.getSettingsObject(null).getName() + " " + onFailMessage;
        LOGGER.log(Level.SEVERE, tmp, e);
        throw new InitializationException(tmp, e);
    }

    // force creation of DNS Cache now -- avoids CacheCleaner in toe-threads group
    // also cap size at 1 (we never wanta cached value; 0 is non-operative)
    Lookup.getDefaultCache(DClass.IN).setMaxEntries(1);
    //dns.getRecords("localhost", Type.A, DClass.IN);

    setupToePool();
    setThresholds();

    reserveMemory = new LinkedList<char[]>();
    for (int i = 1; i < RESERVE_BLOCKS; i++) {
        reserveMemory.add(new char[RESERVE_BLOCK_SIZE]);
    }
}

---

From source file:org.archive.crawler.framework.CrawlController.java

/**
 * Starting from nothing, set up CrawlController and associated
 * classes to be ready for a first crawl.
 *
 * @param sH Settings handler.//from   w  ww .j  ava 2s  .  c om
 * @throws InitializationException
 */
public void initialize(SettingsHandler sH) throws InitializationException {
    sendCrawlStateChangeEvent(PREPARING, CrawlJob.STATUS_PREPARING);

    this.singleThreadLock = new ReentrantLock();
    this.settingsHandler = sH;
    installThreadContextSettingsHandler();
    this.order = settingsHandler.getOrder();
    this.order.setController(this);
    this.bigmaps = new Hashtable<String, ObjectIdentityCache<?, ?>>();
    sExit = "";
    this.manifest = new StringBuffer();
    String onFailMessage = "";
    try {
        onFailMessage = "You must set the User-Agent and From HTTP" + " header values to acceptable strings. \n"
                + " User-Agent: [software-name](+[info-url])[misc]\n" + " From: [email-address]\n";
        order.checkUserAgentAndFrom();

        onFailMessage = "Unable to setup disk";
        if (disk == null) {
            setupDisk();
        }

        onFailMessage = "Unable to create log file(s)";
        setupLogs();

        // Figure if we're to do a checkpoint restore. If so, get the
        // checkpointRecover instance and then put into place the old bdb
        // log files. If any of the log files already exist in target state
        // diretory, WE DO NOT OVERWRITE (Makes for faster recovery).
        // CrawlController checkpoint recovery code manages restoration of
        // the old StatisticsTracker, any BigMaps used by the Crawler and
        // the moving of bdb log files into place only. Other objects
        // interested in recovery need to ask if
        // CrawlController#isCheckpointRecover is set to figure if in
        // recovery and then take appropriate recovery action
        // (These objects can call CrawlController#getCheckpointRecover
        // to get the directory that might hold files/objects dropped
        // checkpointing).  Such objects will need to use a technique other
        // than object serialization restoring settings because they'll
        // have already been constructed when comes time for object to ask
        // if its to recover itself. See ARCWriterProcessor for example.
        onFailMessage = "Unable to test/run checkpoint recover";
        this.checkpointRecover = getCheckpointRecover();
        if (this.checkpointRecover == null) {
            this.checkpointer = new Checkpointer(this, this.checkpointsDisk);
        } else {
            setupCheckpointRecover();
        }

        onFailMessage = "Unable to setup bdb environment.";
        setupBdb();

        onFailMessage = "Unable to setup statistics";
        setupStatTracking();

        onFailMessage = "Unable to setup crawl modules";
        setupCrawlModules();
    } catch (Exception e) {
        String tmp = "On crawl: " + settingsHandler.getSettingsObject(null).getName() + " " + onFailMessage;
        LOGGER.log(Level.SEVERE, tmp, e);
        throw new InitializationException(tmp, e);
    }

    // force creation of DNS Cache now -- avoids CacheCleaner in toe-threads group
    // also cap size at 1 (we never wanta cached value; 0 is non-operative)
    Lookup.getDefaultCache(DClass.IN).setMaxEntries(1);
    //dns.getRecords("localhost", Type.A, DClass.IN);

    loopingToes = new AtomicInteger(0);
    setupToePool();
    setThresholds();

    reserveMemory = new LinkedList<char[]>();
    for (int i = 1; i < RESERVE_BLOCKS; i++) {
        reserveMemory.add(new char[RESERVE_BLOCK_SIZE]);
    }
}

---

From source file:com.wooki.domain.biz.ChapterManagerImpl.java

private synchronized ReentrantLock getOrCreateLock(Long chapterId) {
    assert chapterId != null;

    if (locks.containsKey(chapterId)) {
        return locks.get(chapterId);
    }//from  w w w  .ja  v  a 2 s.  c o  m

    ReentrantLock lock = new ReentrantLock();
    locks.put(chapterId, lock);
    return lock;
}

---

From source file:org.exoplatform.social.core.storage.impl.ActivityStreamStorageImpl.java

@Override
public void updateCommenter(ProcessContext ctx) {
    final ReentrantLock lock = new ReentrantLock();

    try {/* w  ww . ja  v a2  s.  c  o m*/
        StreamProcessContext streamCtx = ObjectHelper.cast(StreamProcessContext.class, ctx);
        ExoSocialActivity activity = streamCtx.getActivity();
        Identity commenter = streamCtx.getIdentity();
        IdentityEntity identityEntity = identityStorage._findIdentityEntity(commenter.getProviderId(),
                commenter.getRemoteId());
        ActivityEntity activityEntity = _findById(ActivityEntity.class, activity.getId());
        //
        lock.lock();

        QueryResult<ActivityRef> got = getActivityRefs(identityEntity, activityEntity);
        ActivityRef activityRef = null;
        while (got.hasNext()) {
            activityRef = got.next();
            activityRef.setName("" + activity.getUpdated().getTime());
            activityRef.setLastUpdated(activity.getUpdated().getTime());
        }

        long oldUpdated = streamCtx.getOldLastUpdated();
        //activity's poster != comment's poster
        //don't have on My Activity stream
        boolean has = hasActivityRefs(identityEntity, activityEntity, ActivityRefType.MY_ACTIVITIES,
                oldUpdated);
        if (has == false) {
            manageRefList(new UpdateContext(commenter, null), activityEntity, ActivityRefType.MY_ACTIVITIES);
        }
        //post comment also put the activity on feed if have not any
        has = hasActivityRefs(identityEntity, activityEntity, ActivityRefType.FEED, oldUpdated);
        if (has == false) {
            manageRefList(new UpdateContext(commenter, null), activityEntity, ActivityRefType.FEED);
        }
        //create activityref for owner's activity
        createRefForPoster(activityEntity, oldUpdated);
    } catch (NodeNotFoundException ex) {
        LOG.warn("Probably was updated activity reference by another session");
        LOG.debug(ex.getMessage(), ex);
    } catch (ChromatticException ex) {
        Throwable throwable = ex.getCause();
        if (throwable instanceof ItemExistsException || throwable instanceof InvalidItemStateException
                || throwable instanceof PathNotFoundException) {
            LOG.warn("Probably was updated activity reference by another session");
            LOG.debug(ex.getMessage(), ex);
        } else {
            LOG.warn("Probably was updated activity reference by another session", ex);
            LOG.debug(ex.getMessage(), ex);
        }
    } finally {
        lock.unlock();
    }
}

---

From source file:com.epam.jdi.uitests.web.selenium.driver.SeleniumDriverFactory.java

public WebDriver getDriver(String driverName) {
    if (!drivers.keys().contains(driverName))
        if (drivers.isEmpty())
            registerDriver("DEFAULT DRIVER", getDefaultDriver());
        else//w w  w  .  j av a  2s  . co  m
            throw exception("Can't find driver with name '%s'", driverName);
    try {
        Lock lock = new ReentrantLock();
        lock.lock();
        if (runDrivers.get() == null || !runDrivers.get().keys().contains(driverName)) {
            MapArray<String, WebDriver> rDrivers = runDrivers.get();
            if (rDrivers == null)
                rDrivers = new MapArray<>();
            WebDriver resultDriver = webDriverSettings.apply(drivers.get(driverName).get());
            if (resultDriver == null)
                throw exception("Can't get WebDriver '%s'. This Driver name not registered", driverName);
            rDrivers.add(driverName, resultDriver);
            runDrivers.set(rDrivers);
        }
        WebDriver result = runDrivers.get().get(driverName);
        if (result.toString().contains("(null)")) {
            result = webDriverSettings.apply(drivers.get(driverName).get());
            runDrivers.get().update(driverName, result);
        }
        lock.unlock();
        return result;
    } catch (Exception ex) {
        throw exception("Can't get driver; Thread: " + currentThread().getId() + LINE_BREAK
                + format("Drivers: %s; Run: %s", drivers, runDrivers) + "Exception: " + ex.getMessage());
    }
}

---

From source file:com.opentech.camel.task.TaskDomainRuntime.java

/**
 * //from  w ww.ja  v a2 s . c  o m
 */
private void initializeDispatcher() {
    threadAvailableLock = new ReentrantLock();
    threadAvailableCondition = threadAvailableLock.newCondition();
    dispatcherThread = new Thread(new Runnable() {

        @Override
        public void run() {
            WrapedTask wt = null;
            ResourceHolder holder = null;
            logger.info(String.format("%s's runtime's dispacher started", taskDomain.getName()));
            while (!Thread.currentThread().isInterrupted()) {
                try {
                    wt = getResource().getQueue().take();
                    // XXX
                    wt.getResourceHolder().release();
                    while (null == (holder = takeThread())) {
                        try {
                            threadAvailableLock.lock();
                            threadAvailableCondition.await(1000, TimeUnit.MILLISECONDS);
                        } finally {
                            threadAvailableLock.unlock();
                        }
                    }
                    logger.debug(String.format("%s acquired one resource:%s", Thread.currentThread().getName(),
                            holder));
                    logger.debug(String.format("%s try to execute one task", Thread.currentThread().getName()));
                    wt.setResourceHolder(holder);
                    _execute(wt);
                } catch (InterruptedException e) {
                    logger.error(String.format("%s interrupted", Thread.currentThread().getName()), e);
                } catch (Throwable t) {
                    logger.error("Disptach one task failed", t);
                } finally {
                    // XXX
                }
            }
            logger.info(String.format("%s's runtime's dispacher stoped", taskDomain.getName()));
        }

    }, String.format("Task-Domain-Runtime-%s-Dispatcher-Thread", taskDomain.getName()));
    dispatcherThread.start();
}

---

From source file:org.wso2.andes.server.subscription.SubscriptionImpl.java

public SubscriptionImpl(AMQChannel channel, AMQProtocolSession protocolSession, AMQShortString consumerTag,
        FieldTable arguments, boolean noLocal, FlowCreditManager creditManager,
        ClientDeliveryMethod deliveryMethod, RecordDeliveryMethod recordMethod) throws AMQException {

    _channel = channel;//from   w  w  w. ja  v a  2  s . c o m
    _consumerTag = consumerTag;

    _creditManager = creditManager;
    creditManager.addStateListener(this);

    _noLocal = noLocal;

    _filters = FilterManagerFactory.createManager(arguments);

    _deliveryMethod = deliveryMethod;
    _recordMethod = recordMethod;

    _stateChangeLock = new ReentrantLock();

    if (arguments != null) {
        Object autoClose = arguments.get(AMQPFilterTypes.AUTO_CLOSE.getValue());
        if (autoClose != null) {
            _autoClose = (Boolean) autoClose;
        } else {
            _autoClose = false;
        }
    } else {
        _autoClose = false;
    }

}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• »