Java Code Examples for java.util.concurrent.locks.ReentrantReadWriteLock

The following examples show how to use java.util.concurrent.locks.ReentrantReadWriteLock. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: neoscada   Source File: HiveCommon.java    License: Eclipse Public License 1.0 6 votes vote down vote up
public HiveCommon ()
{
    final ReentrantReadWriteLock itemMapLock = new ReentrantReadWriteLock ( Boolean.getBoolean ( "org.eclipse.scada.da.server.common.fairItemMapLock" ) );

    this.itemMapReadLock = itemMapLock.readLock ();
    this.itemMapWriteLock = itemMapLock.writeLock ();

    this.subscriptionValidator = new SubscriptionValidator<String> () {

        @Override
        public boolean validate ( final SubscriptionListener<String> listener, final String topic )
        {
            return validateItem ( topic );
        }
    };
}
 
Example 2
Source Project: buffer-trigger   Source File: SimpleBufferTrigger.java    License: Artistic License 2.0 6 votes vote down vote up
SimpleBufferTrigger(SimpleBufferTriggerBuilder<E, C> builder) {
    this.queueAdder = builder.queueAdder;
    this.bufferFactory = builder.bufferFactory;
    this.consumer = builder.consumer;
    this.exceptionHandler = builder.exceptionHandler;
    this.maxBufferCount = builder.maxBufferCount;
    this.rejectHandler = builder.rejectHandler;
    this.buffer.set(this.bufferFactory.get());
    if (!builder.disableSwitchLock) {
        ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
        readLock = lock.readLock();
        writeLock = lock.writeLock();
        writeCondition = writeLock.newCondition();
    } else {
        readLock = null;
        writeLock = null;
        writeCondition = null;
    }
    builder.scheduledExecutorService.schedule(
            new TriggerRunnable(builder.scheduledExecutorService, builder.triggerStrategy),
            DEFAULT_NEXT_TRIGGER_PERIOD, MILLISECONDS);
}
 
Example 3
Source Project: scava   Source File: StorageDirect2.java    License: Eclipse Public License 2.0 6 votes vote down vote up
public StorageDirect2(Volume.Factory volFac, boolean readOnly) {
    this.readOnly = readOnly;

    locks = new ReentrantReadWriteLock[CONCURRENCY_FACTOR];
    for(int i=0;i<locks.length;i++) locks[i] = new ReentrantReadWriteLock();
    freeSpaceLock = new ReentrantLock();

    index = volFac.createIndexVolume();
    phys = volFac.createPhysVolume();
    if(index.isEmpty()){
        createStructure();
    }else{
        checkHeaders();
    }

}
 
Example 4
Source Project: Aceso   Source File: AbstractPatchesLoaderImpl.java    License: Apache License 2.0 6 votes vote down vote up
@Override
public boolean load() {
    try {
        InstantFixClassMap.setClassLoader(getClass().getClassLoader());
        HashMap<Integer, ReadWriteLock> lockMap = new HashMap<>();
        HashMap<Integer, String> classIndexMap = new HashMap<>();
        String[] patchedClasses = getPatchedClasses();
        int[] patchedClassIndexes = getPatchedClassIndexes();
        if (patchedClasses.length != patchedClassIndexes.length) {
            throw new IllegalArgumentException("patchedClasses's len is " + patchedClasses.length + ", but patchedClassIndexs's len is " + patchedClassIndexes.length);
        }
        for (int i = 0; i < patchedClasses.length; i++) {
            String className = patchedClasses[i];
            int classIndex = patchedClassIndexes[i];
            lockMap.put(classIndex, new ReentrantReadWriteLock());
            classIndexMap.put(classIndex, className);
            Log.i(TAG, String.format("patched %s", className));
        }
        InstantFixClassMap.setAtomMap(new InstantFixClassMap.AtomMap(classIndexMap, lockMap));
    } catch (Throwable e) {
        e.printStackTrace();
        return false;
    }
    return true;
}
 
Example 5
Source Project: hypergraphdb   Source File: WeakRefAtomCache.java    License: Apache License 2.0 6 votes vote down vote up
private void reset()
{
    graph = null;
    incidenceCache = null;
    liveHandles = null;
    liveHandlesTx = null;
    atoms = null;
    atomsTx = null;
    frozenAtoms = null;
    coldAtoms = new ColdAtoms();
    gcLock = new ReentrantReadWriteLock();
    refQueue = new ReferenceQueue<Object>();
    cleanupThread = null;
    cleanupTxConfig = new HGTransactionConfig();
    phantomQueuePollInterval = DEFAULT_PHANTOM_QUEUE_POLL_INTERVAL;
    closing = false;
}
 
Example 6
Source Project: incubator-tez   Source File: TaskImpl.java    License: Apache License 2.0 6 votes vote down vote up
public TaskImpl(TezVertexID vertexId, int taskIndex,
    EventHandler eventHandler, Configuration conf,
    TaskAttemptListener taskAttemptListener,
    Clock clock, TaskHeartbeatHandler thh, AppContext appContext,
    boolean leafVertex, Resource resource,
    ContainerContext containerContext) {
  this.conf = conf;
  this.clock = clock;
  ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
  readLock = readWriteLock.readLock();
  writeLock = readWriteLock.writeLock();
  this.attempts = Collections.emptyMap();
  // TODO Avoid reading this from configuration for each task.
  maxFailedAttempts = this.conf.getInt(TezConfiguration.TEZ_AM_TASK_MAX_FAILED_ATTEMPTS,
                            TezConfiguration.TEZ_AM_TASK_MAX_FAILED_ATTEMPTS_DEFAULT);
  taskId = TezTaskID.getInstance(vertexId, taskIndex);
  this.taskAttemptListener = taskAttemptListener;
  this.taskHeartbeatHandler = thh;
  this.eventHandler = eventHandler;
  this.appContext = appContext;

  this.leafVertex = leafVertex;
  this.taskResource = resource;
  this.containerContext = containerContext;
  stateMachine = stateMachineFactory.make(this);
}
 
Example 7
Source Project: bt   Source File: PeerExchangePeerSourceFactory.java    License: Apache License 2.0 6 votes vote down vote up
@Inject
public PeerExchangePeerSourceFactory(EventSource eventSource,
                                     IRuntimeLifecycleBinder lifecycleBinder,
                                     PeerExchangeConfig config) {
    this.peerSources = new ConcurrentHashMap<>();
    this.peerEvents = new ConcurrentHashMap<>();
    this.rwLock = new ReentrantReadWriteLock();
    this.peers = ConcurrentHashMap.newKeySet();
    this.lastSentPEXMessage = new ConcurrentHashMap<>();
    if (config.getMaxMessageInterval().compareTo(config.getMinMessageInterval()) < 0) {
        throw new IllegalArgumentException("Max message interval is greater than min interval");
    }
    this.minMessageInterval = config.getMinMessageInterval();
    this.maxMessageInterval = config.getMaxMessageInterval();
    this.minEventsPerMessage = config.getMinEventsPerMessage();
    this.maxEventsPerMessage = config.getMaxEventsPerMessage();

    eventSource.onPeerConnected(e -> onPeerConnected(e.getConnectionKey()))
            .onPeerDisconnected(e -> onPeerDisconnected(e.getConnectionKey()));

    ScheduledExecutorService executor =
            Executors.newSingleThreadScheduledExecutor(r -> new Thread(r, "bt.peerexchange.cleaner"));
    lifecycleBinder.onStartup("Schedule periodic cleanup of PEX messages", () -> executor.scheduleAtFixedRate(
            new Cleaner(), CLEANER_INTERVAL.toMillis(), CLEANER_INTERVAL.toMillis(), TimeUnit.MILLISECONDS));
    lifecycleBinder.onShutdown("Shutdown PEX cleanup scheduler", executor::shutdownNow);
}
 
Example 8
Source Project: hollow   Source File: HollowConsumer.java    License: Apache License 2.0 6 votes vote down vote up
protected  <B extends Builder<B>> HollowConsumer(B builder) {
    // duplicated with HollowConsumer(...) constructor above. We cannot chain constructor calls because that
    // constructor subscribes to the announcement watcher and we have more setup to do first
    this.metrics = new HollowConsumerMetrics();
    this.updater = new HollowClientUpdater(builder.blobRetriever,
            builder.refreshListeners,
            builder.apiFactory,
            builder.doubleSnapshotConfig,
            builder.hashCodeFinder,
            builder.objectLongevityConfig,
            builder.objectLongevityDetector,
            metrics,
            builder.metricsCollector);
    updater.setFilter(builder.typeFilter);
    this.announcementWatcher = builder.announcementWatcher;
    this.refreshExecutor = builder.refreshExecutor;
    this.refreshLock = new ReentrantReadWriteLock();
    if (announcementWatcher != null)
        announcementWatcher.subscribeToUpdates(this);
}
 
Example 9
Source Project: tajo   Source File: QueryInProgress.java    License: Apache License 2.0 6 votes vote down vote up
public QueryInProgress(
    TajoMaster.MasterContext masterContext,
    Session session,
    QueryContext queryContext,
    QueryId queryId, String sql, String jsonExpr, LogicalRootNode plan) {

  this.masterContext = masterContext;
  this.session = session;
  this.queryId = queryId;
  this.plan = plan;

  queryInfo = new QueryInfo(queryId, queryContext, sql, jsonExpr);
  queryInfo.setStartTime(System.currentTimeMillis());

  rpcParams = RpcParameterFactory.get(masterContext.getConf());

  ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
  this.readLock = readWriteLock.readLock();
  this.writeLock = readWriteLock.writeLock();
}
 
Example 10
Source Project: hbase   Source File: Segment.java    License: Apache License 2.0 6 votes vote down vote up
protected Segment(CellComparator comparator, List<ImmutableSegment> segments,
    TimeRangeTracker trt) {
  long dataSize = 0;
  long heapSize = 0;
  long OffHeapSize = 0;
  int cellsCount = 0;
  for (Segment segment : segments) {
    MemStoreSize memStoreSize = segment.getMemStoreSize();
    dataSize += memStoreSize.getDataSize();
    heapSize += memStoreSize.getHeapSize();
    OffHeapSize += memStoreSize.getOffHeapSize();
    cellsCount += memStoreSize.getCellsCount();
  }
  this.comparator = comparator;
  this.updatesLock = new ReentrantReadWriteLock();
  // Do we need to be thread safe always? What if ImmutableSegment?
  // DITTO for the TimeRangeTracker below.
  this.memStoreSizing = new ThreadSafeMemStoreSizing(dataSize, heapSize, OffHeapSize, cellsCount);
  this.timeRangeTracker = trt;
}
 
Example 11
Source Project: blazingcache   Source File: LocalLockManager.java    License: Apache License 2.0 6 votes vote down vote up
private ReentrantReadWriteLock returnLockForKey(String key) throws IllegalStateException {
    ReentrantReadWriteLock lock;
    generalLock.lock();
    try {
        lock = liveLocks.get(key);
        if (lock == null) {
            LOGGER.log(Level.SEVERE, "no lock object exists for key {0}", key);
            throw new IllegalStateException("no lock object exists for key " + key);
        }
        int actualCount = locksCounter.get(key).decrementAndGet();
        if (actualCount == 0) {
            liveLocks.remove(key);
            locksCounter.remove(key);
        }
    } finally {
        generalLock.unlock();
    }
    return lock;
}
 
Example 12
@Override
protected void configure()
{
    bind(String.class).annotatedWith(Names.named(CoreModule.MODULE_NAME))
        .toInstance(LinStor.SATELLITE_MODULE);

    bind(ReadWriteLock.class).annotatedWith(Names.named(STLT_CONF_LOCK))
        .toInstance(new ReentrantReadWriteLock(true));

    bind(ControllerPeerConnector.class).to(ControllerPeerConnectorImpl.class);
    // bind(UpdateMonitor.class).to(UpdateMonitorImpl.class);
    // bind(DeviceManager.class).to(DeviceManagerImpl.class);
    // install(new FactoryModuleBuilder()
    //    .implement(DeviceManagerImpl.DeviceHandlerInvocation.class,
    //       DeviceManagerImpl.DeviceHandlerInvocation.class)
    //    .build(DeviceManagerImpl.DeviceHandlerInvocationFactory.class));

    bind(Path.class).annotatedWith(Names.named(DRBD_CONFIG_PATH)).toInstance(
        FileSystems.getDefault().getPath(CoreModule.CONFIG_PATH)
    );
}
 
Example 13
Source Project: gemfirexd-oss   Source File: SortedOplogSetImpl.java    License: Apache License 2.0 6 votes vote down vote up
public SortedOplogSetImpl(final SortedOplogFactory factory, Executor exec, Compactor ctor) throws IOException {
  this.factory = factory;
  this.flusher = new AbortableTaskService(exec);
  this.compactor = ctor;
  
  rwlock = new ReentrantReadWriteLock();
  bufferCount = new AtomicInteger(0);
  unflushed = new ArrayDeque<SortedBuffer<Integer>>();
  current = new AtomicReference<SortedBuffer<Integer>>(
      new SortedBuffer<Integer>(factory.getConfiguration(), 0));
  
  logger = ComponentLogWriter.getSoplogLogWriter(factory.getConfiguration().getName(), LogService.logger());
  if (logger.fineEnabled()) {
    logger.fine("Creating soplog set");
  }
}
 
Example 14
Source Project: openjdk-jdk8u   Source File: Repository.java    License: GNU General Public License v2.0 5 votes vote down vote up
/**
 * Construct a new repository with the given default domain.
 */
public Repository(String domain, boolean fairLock) {
    lock = new ReentrantReadWriteLock(fairLock);

    domainTb = new HashMap<String,Map<String,NamedObject>>(5);

    if (domain != null && domain.length() != 0)
        this.domain = domain.intern(); // we use == domain later on...
    else
        this.domain = ServiceName.DOMAIN;

    // Creates a new hashtable for the default domain
    domainTb.put(this.domain, new HashMap<String,NamedObject>());
}
 
Example 15
Source Project: mapleLemon   Source File: MapleMap.java    License: GNU General Public License v2.0 5 votes vote down vote up
public List<MapleReactor> getAllReactorsThreadsafe() {
    ArrayList ret = new ArrayList();
    ((ReentrantReadWriteLock) this.mapobjectlocks.get(MapleMapObjectType.REACTOR)).readLock().lock();
    try {
        for (MapleMapObject mmo : mapobjects.get(MapleMapObjectType.REACTOR).values()) {
            ret.add((MapleReactor) mmo);
        }
    } finally {
        ((ReentrantReadWriteLock) this.mapobjectlocks.get(MapleMapObjectType.REACTOR)).readLock().unlock();
    }
    return ret;
}
 
Example 16
Source Project: bitcoin-verde   Source File: StratumMineBlockTaskBuilderCore.java    License: MIT License 5 votes vote down vote up
public StratumMineBlockTaskBuilderCore(final Integer totalExtraNonceByteCount, final TransactionDeflater transactionDeflater) {
    _totalExtraNonceByteCount = totalExtraNonceByteCount;
    _transactionDeflater = transactionDeflater;

    final ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock();
    _prototypeBlockReadLock = readWriteLock.readLock();
    _prototypeBlockWriteLock = readWriteLock.writeLock();

    _initPrototypeBlock();
}
 
Example 17
Source Project: flink   Source File: AbstractBlobCache.java    License: Apache License 2.0 5 votes vote down vote up
public AbstractBlobCache(
		final Configuration blobClientConfig,
		final BlobView blobView,
		final Logger logger,
		@Nullable final InetSocketAddress serverAddress) throws IOException {

	this.log = checkNotNull(logger);
	this.blobClientConfig = checkNotNull(blobClientConfig);
	this.blobView = checkNotNull(blobView);
	this.readWriteLock = new ReentrantReadWriteLock();

	// configure and create the storage directory
	this.storageDir = BlobUtils.initLocalStorageDirectory(blobClientConfig);
	log.info("Created BLOB cache storage directory " + storageDir);

	// configure the number of fetch retries
	final int fetchRetries = blobClientConfig.getInteger(BlobServerOptions.FETCH_RETRIES);
	if (fetchRetries >= 0) {
		this.numFetchRetries = fetchRetries;
	} else {
		log.warn("Invalid value for {}. System will attempt no retries on failed fetch operations of BLOBs.",
			BlobServerOptions.FETCH_RETRIES.key());
		this.numFetchRetries = 0;
	}

	// Add shutdown hook to delete storage directory
	shutdownHook = ShutdownHookUtil.addShutdownHook(this, getClass().getSimpleName(), log);

	this.serverAddress = serverAddress;
}
 
Example 18
Source Project: joal   Source File: BandwidthDispatcher.java    License: Apache License 2.0 5 votes vote down vote up
public BandwidthDispatcher(final int threadPauseInterval, final RandomSpeedProvider randomSpeedProvider) {
    this.threadPauseInterval = threadPauseInterval;
    this.torrentsSeedStats = new HashMap<>();
    this.speedMap = new HashMap<>();
    this.lock = new ReentrantReadWriteLock();


    this.weightHolder = new WeightHolder<>(new PeersAwareWeightCalculator());
    this.randomSpeedProvider = randomSpeedProvider;
}
 
Example 19
Source Project: dble   Source File: PhysicalDataHost.java    License: GNU General Public License v2.0 5 votes vote down vote up
public String switchMaster(String writeHost, boolean syncWriteConf) {
    final ReentrantReadWriteLock lock = DbleServer.getInstance().getConfig().getLock();
    lock.readLock().lock();
    adjustLock.writeLock().lock();
    try {
        HaConfigManager.getInstance().updateConfDataHost(createSwitchSnapshot(writeHost), syncWriteConf);

        PhysicalDataSource newWriteHost = allSourceMap.get(writeHost);
        writeSource.setReadNode(true);
        //close all old master connection ,so that new write query would not put into the old writeHost
        writeSource.clearCons("ha command switch datasource");
        if (!newWriteHost.isDisabled()) {
            GetAndSyncDataSourceKeyVariables task = new GetAndSyncDataSourceKeyVariables(newWriteHost, true);
            KeyVariables variables = task.call();
            if (variables != null) {
                newWriteHost.setReadOnly(variables.isReadOnly());
            } else {
                LOGGER.warn(" GetAndSyncDataSourceKeyVariables failed, set newWriteHost ReadOnly");
                newWriteHost.setReadOnly(true);
            }
        }
        newWriteHost.setReadNode(false);
        writeSource = newWriteHost;
        return this.getClusterHaJson();
    } catch (Exception e) {
        LOGGER.warn("switchMaster Exception ", e);
        throw e;
    } finally {
        lock.readLock().unlock();
        adjustLock.writeLock().unlock();
    }
}
 
Example 20
Source Project: incubator-retired-blur   Source File: ThriftCacheServer.java    License: Apache License 2.0 5 votes vote down vote up
private Lock getOrCreateLock(ThriftCacheKey<?> key) {
  Lock lock = _lockMap.get(key);
  if (lock == null) {
    Lock nLock = new ReentrantReadWriteLock().writeLock();
    Lock pLock = _lockMap.putIfAbsent(key, new InternalLock(nLock, _lockMap, key));
    if (pLock == null) {
      return nLock;
    } else {
      return pLock;
    }
  } else {
    return lock;
  }
}
 
Example 21
Source Project: strongbox   Source File: FileTest.java    License: Apache License 2.0 5 votes vote down vote up
@Test
public void file_try_with_resources() {
    String path = "test.sbx";
    SecretIdentifier secretIdentifier1 = new SecretIdentifier("MySecret");
    long version1 = 1;
    State state1 = State.ENABLED;
    byte[] payload = Encoder.asUTF8("encryptedPayload");
    RawSecretEntry entry1 = new RawSecretEntry(secretIdentifier1, version1, state1, Optional.empty(), Optional.empty(), payload);

    SecretIdentifier secretIdentifier2 = new SecretIdentifier("MySecret2");
    long version2 = 2;
    Optional<ZonedDateTime> notBeforeValue = Optional.of(ZonedDateTime.of(2016, 5, 4, 2, 0 ,0, 0, ZoneId.of("UTC")));
    RawSecretEntry entry2 = new RawSecretEntry(secretIdentifier2, version2, state1, notBeforeValue, Optional.empty(), payload);

    try (File store = new File(new java.io.File(path), new DummyEncryptor(), new FileEncryptionContext(group), new ReentrantReadWriteLock())) {
        if (store.exists()) {
            store.delete();
        }
        store.create(entry1);
        store.create(entry2);
    } // auto closeable should write the results to disk when exiting the try clause, and thus be readable in the next section

    try (File file = new File(new java.io.File(path), new DummyEncryptor(), new FileEncryptionContext(group), new ReentrantReadWriteLock())) {
        List<RawSecretEntry> list = file.stream().toList();
        boolean t = list.get(1).equals(entry2);
        assertThat(list, containsInAnyOrder(entry1, entry2));
    }

    java.io.File f = new java.io.File(path);
    if (!f.delete()) {
        throw new UnexpectedStateException(path, "EXISTS", "DELETED", "File store deletion failed");
    }
}
 
Example 22
Source Project: moleculer-java   Source File: NodeDescriptor.java    License: MIT License 5 votes vote down vote up
public NodeDescriptor(String nodeID, boolean preferHostname, boolean local) {

		// Init final properties
		this.nodeID = nodeID;
		this.preferHostname = preferHostname;
		this.local = local;

		// Init locks
		ReentrantReadWriteLock lock = new ReentrantReadWriteLock(false);
		readLock = lock.readLock();
		writeLock = lock.writeLock();
	}
 
Example 23
Source Project: jdk1.8-source-analysis   Source File: Repository.java    License: Apache License 2.0 5 votes vote down vote up
/**
 * Construct a new repository with the given default domain.
 */
public Repository(String domain, boolean fairLock) {
    lock = new ReentrantReadWriteLock(fairLock);

    domainTb = new HashMap<String,Map<String,NamedObject>>(5);

    if (domain != null && domain.length() != 0)
        this.domain = domain.intern(); // we use == domain later on...
    else
        this.domain = ServiceName.DOMAIN;

    // Creates a new hashtable for the default domain
    domainTb.put(this.domain, new HashMap<String,NamedObject>());
}
 
Example 24
Source Project: incubator-tajo   Source File: Worker.java    License: Apache License 2.0 5 votes vote down vote up
public Worker(TajoRMContext rmContext, WorkerResource resource) {
  this.rmContext = rmContext;

  this.lastHeartbeatTime = System.currentTimeMillis();
  this.resource = resource;

  ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
  this.readLock = lock.readLock();
  this.writeLock = lock.writeLock();
}
 
Example 25
Source Project: hop   Source File: BaseTransform.java    License: Apache License 2.0 5 votes vote down vote up
/**
 * Adds the result file.
 *
 * @param resultFile the result file
 */
public void addResultFile( ResultFile resultFile ) {
  ReentrantReadWriteLock.WriteLock lock = resultFilesLock.writeLock();
  lock.lock();
  try {
    resultFiles.put( resultFile.getFile().toString(), resultFile );
  } finally {
    lock.unlock();
  }
}
 
Example 26
/**
 * Creates a new {@link ResettingExponentiallyDecayingReservoir}.
 *
 * @param size  the number of samples to keep in the sampling reservoir
 * @param alpha the exponential decay factor; the higher this is, the more biased the reservoir
 *              will be towards newer values
 * @param clock the clock used to timestamp samples and track rescaling
 */
public ResettingExponentiallyDecayingReservoir(int size, double alpha, Clock clock) {
    this.values = new ConcurrentSkipListMap<Double, WeightedSample>();
    this.lock = new ReentrantReadWriteLock();
    this.alpha = alpha;
    this.size = size;
    this.clock = clock;
    this.count = new AtomicLong(0);
    this.startTime = currentTimeInSeconds();
    this.nextScaleTime = new AtomicLong(clock.getTick() + RESCALE_THRESHOLD);
}
 
Example 27
Source Project: APICloud-Studio   Source File: Index.java    License: GNU General Public License v3.0 5 votes vote down vote up
/**
 * Index
 * 
 * @param containerURI
 * @param reuseExistingFile
 * @throws IOException
 */
protected Index(URI containerURI, boolean reuseExistingFile) throws IOException
{
	this.containerURI = containerURI;

	this.memoryIndex = new MemoryIndex();
	this.monitor = new ReentrantReadWriteLock();

	// Convert to a filename we can use for the actual index on disk
	IPath diskIndexPath = computeIndexLocation(containerURI);
	if (diskIndexPath == null)
	{
		return;
	}
	String diskIndexPathString = (diskIndexPath.getDevice() == null) ? diskIndexPath.toString() : diskIndexPath
			.toOSString();
	this.enterWrite();
	try
	{
		this.diskIndex = new DiskIndex(diskIndexPathString);
		this.diskIndex.initialize(reuseExistingFile);
	}
	finally
	{
		this.exitWrite();
	}
}
 
Example 28
/**
 * Create a new instance
 * @param stopper the cancellation criterion
 */
public StoppableReentrantReadWriteLock(CancelCriterion stopper) {
  Assert.assertTrue(stopper != null);
  ReadWriteLock lock = new ReentrantReadWriteLock();
  this.readLock = new StoppableReadLock(lock, stopper);
  this.writeLock = new StoppableWriteLock(lock, stopper);
}
 
Example 29
Source Project: datacollector   Source File: StatsInfo.java    License: Apache License 2.0 5 votes vote down vote up
/**
 * @param extensions Immutable list of callbacks to extend stats behavior.
 */
public StatsInfo(List<AbstractStatsExtension> extensions) {
  rwLock = new ReentrantReadWriteLock(true);
  doWithLock(() -> {
    collectedStats = new ArrayList<>();
    extensions.stream().forEach(e -> e.setStatsInfo(this));
    activeStats = new ActiveStats(extensions.stream().map(AbstractStatsExtension::snapshotAndPopulateStatsInfo).collect(Collectors.toList()));
    activeStats.setStatsInfo(this);
  }, true);
}
 
Example 30
Source Project: triplea   Source File: GameData.java    License: GNU General Public License v3.0 5 votes vote down vote up
private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
  // The process of deserializing makes use of this lock,
  // we'll get an NPE if we don't set this field here already.
  readWriteLock = new ReentrantReadWriteLock();
  in.defaultReadObject();
  gameDataEventListeners = new GameDataEventListeners();
}