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

Introduction

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

Prototype

public ReentrantReadWriteLock()

Source Link

Document

Creates a new ReentrantReadWriteLock with default (nonfair) ordering properties.

Usage

From source file:nl.basvanmarwijk.mylocations.viewcontroller.LocationItemDetailFragment.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    ReentrantReadWriteLock itemLock = new ReentrantReadWriteLock();
    itemReadLock = itemLock.readLock();/*from  w ww  . ja va2 s  .  c  o m*/
    itemWriteLock = itemLock.writeLock();

    // verkrijg de locatie item uit de database
    final Bundle args = getArguments();
    if (args.containsKey(ARG_ITEM_ID)) {
        final long id = args.getLong(ARG_ITEM_ID);

        DBManager dbManager = App.getDbManager();
        Location item = dbManager.getLocationById(id);
        mItem = item;
    }
}

From source file:org.apache.hadoop.hbase.quotas.FileArchiverNotifierImpl.java

public FileArchiverNotifierImpl(Connection conn, Configuration conf, FileSystem fs, TableName tn) {
    this.conn = conn;
    this.conf = conf;
    this.fs = fs;
    this.tn = tn;
    ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
    readLock = lock.readLock();/*from www. j  a  v a 2 s.  c om*/
    writeLock = lock.writeLock();
}

From source file:org.apache.tajo.master.QueryUnit.java

public QueryUnit(QueryUnitId id, boolean isLeafTask, EventHandler eventHandler) {
    this.taskId = id;
    this.eventHandler = eventHandler;
    this.isLeafTask = isLeafTask;
    scan = new ArrayList<ScanNode>();
    fetchMap = Maps.newHashMap();/*from w  w w  . ja  va  2 s .  co  m*/
    fragMap = Maps.newHashMap();
    partitions = new ArrayList<Partition>();
    attempts = Collections.emptyMap();
    lastAttemptId = -1;
    failedAttempts = 0;

    ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
    this.readLock = readWriteLock.readLock();
    this.writeLock = readWriteLock.writeLock();

    stateMachine = stateMachineFactory.make(this);
}

From source file:net.myrrix.online.generation.Generation.java

public Generation(FastByIDMap<FastIDSet> knownItemIDs, FastByIDMap<float[]> X, FastByIDMap<float[]> Y,
        FastIDSet itemTagIDs, FastIDSet userTagIDs, List<IDCluster> userClusters,
        List<IDCluster> itemClusters) {
    // knownItemIDs may be null, specially
    Preconditions.checkNotNull(X);//from ww w . j av  a2s  .co  m
    Preconditions.checkNotNull(Y);
    Preconditions.checkNotNull(itemTagIDs);
    Preconditions.checkNotNull(userTagIDs);
    Preconditions.checkNotNull(userClusters);
    Preconditions.checkNotNull(itemClusters);

    this.knownItemIDs = knownItemIDs;
    this.knownUserIDs = null; // Not used yet
    this.X = X;
    this.XTXsolver = null;
    this.Y = Y;
    this.YTYsolver = null;
    this.itemTagIDs = itemTagIDs;
    this.userTagIDs = userTagIDs;
    this.userClusters = userClusters;
    this.itemClusters = itemClusters;
    this.candidateFilter = null;
    this.xLock = new ReentrantReadWriteLock();
    this.yLock = new ReentrantReadWriteLock();
    this.knownItemLock = new ReentrantReadWriteLock();
    this.knownUserLock = null; // Not used yet
    this.userClustersLock = new ReentrantReadWriteLock();
    this.itemClustersLock = new ReentrantReadWriteLock();
    recomputeState();
}

From source file:org.apache.ambari.resource.statemachine.ClusterImpl.java

public ClusterImpl(Cluster cluster, int revision) throws IOException {
    ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
    this.readLock = readWriteLock.readLock();
    this.writeLock = readWriteLock.writeLock();
    this.stateMachine = stateMachineFactory.make(this);
    List<ServiceFSM> serviceImpls = new ArrayList<ServiceFSM>();
    for (String service : cluster.getClusterDefinition(revision).getEnabledServices()) {
        if (hasActiveRoles(cluster, service)) {
            ServiceImpl serviceImpl = new ServiceImpl(cluster.getComponentDefinition(service).getActiveRoles(),
                    this, service);

            serviceImpls.add(serviceImpl);
        }/*from  w  w w  .jav  a 2s .  co  m*/
    }
    this.cls = cluster;
    this.services = serviceImpls;
}

From source file:org.apache.hadoop.yarn.server.nodemanager.containermanager.application.ApplicationImpl.java

public ApplicationImpl(Dispatcher dispatcher, String user, ApplicationId appId, Credentials credentials,
        Context context, String userFolder, int x509Version, long jwtExpiration) {
    this.dispatcher = dispatcher;
    this.user = user;
    this.userFolder = userFolder;
    this.appId = appId;
    this.credentials = credentials;
    this.aclsManager = context.getApplicationACLsManager();
    this.context = context;
    this.x509Version = new AtomicInteger(x509Version);
    this.jwtExpiration = new AtomicLong(jwtExpiration);
    ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
    readLock = lock.readLock();/*from  w ww.ja  v  a2 s  . c  om*/
    writeLock = lock.writeLock();
    stateMachine = stateMachineFactory.make(this);
}

From source file:it.doqui.index.ecmengine.business.personalization.multirepository.node.index.AbstractReindexComponent.java

public AbstractReindexComponent() {
    shutdown = false;// w  ww.j  av a 2 s.  co  m
    indexerWriteLockMap = new HashMap<String, WriteLock>(
            RepositoryManager.getInstance().getRepositories().size());

    for (Repository repository : RepositoryManager.getInstance().getRepositories()) {
        ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock();

        indexerWriteLockMap.put(repository.getId(), readWriteLock.writeLock());
    }
}

From source file:org.apache.tajo.master.Query.java

public Query(final QueryContext context, final QueryId id, Clock clock, final long appSubmitTime,
        final String queryStr, final EventHandler eventHandler, final MasterPlan plan,
        final StorageManager sm) {
    this.context = context;
    this.conf = context.getConf();
    this.id = id;
    this.clock = clock;
    this.appSubmitTime = appSubmitTime;
    this.queryStr = queryStr;
    subqueries = Maps.newHashMap();/*from w w w . j a v a 2s  .c om*/
    this.eventHandler = eventHandler;
    this.plan = plan;
    this.sm = sm;
    cursor = new ExecutionBlockCursor(plan);

    ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
    this.readLock = readWriteLock.readLock();
    this.writeLock = readWriteLock.writeLock();

    stateMachine = stateMachineFactory.make(this);
}

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

/**
 * Creates an empty model.//  w ww  . j  av a 2  s  .c o m
 *
 * @param features number of features expected for user/item feature vectors
 * @param implicit whether model implements implicit feedback
 */
@SuppressWarnings("unchecked")
ALSServingModel(int features, boolean implicit) {
    Preconditions.checkArgument(features > 0);

    X = HashObjObjMaps.newMutableMap();
    Y = (ObjObjMap<String, float[]>[]) Array.newInstance(ObjObjMap.class, PARTITIONS);
    for (int i = 0; i < Y.length; i++) {
        Y[i] = HashObjObjMaps.newMutableMap();
    }

    recentNewUsers = new HashSet<>();
    recentNewItems = (Collection<String>[]) Array.newInstance(HashSet.class, PARTITIONS);
    for (int i = 0; i < recentNewItems.length; i++) {
        recentNewItems[i] = new HashSet<>();
    }

    knownItems = HashObjObjMaps.newMutableMap();

    xLock = new ReentrantReadWriteLock();
    yLocks = new ReentrantReadWriteLock[Y.length];
    for (int i = 0; i < yLocks.length; i++) {
        yLocks[i] = new ReentrantReadWriteLock();
    }

    this.features = features;
    this.implicit = implicit;
}

From source file:org.elasticsoftware.elasticactors.cluster.LocalActorSystemInstance.java

public LocalActorSystemInstance(PhysicalNode localNode, InternalActorSystems cluster,
        InternalActorSystemConfiguration configuration, NodeSelectorFactory nodeSelectorFactory) {
    this.configuration = configuration;
    this.nodeSelectorFactory = nodeSelectorFactory;
    this.cluster = cluster;
    this.shards = new ActorShard[configuration.getNumberOfShards()];
    this.shardLocks = new ReadWriteLock[shards.length];
    this.shardAdapters = new ActorShardAdapter[shards.length];
    for (int i = 0; i < shards.length; i++) {
        shardLocks[i] = new ReentrantReadWriteLock();
        shardAdapters[i] = new ActorShardAdapter(new ShardKey(configuration.getName(), i));
    }//w w w  . jav  a 2s . c  o m
    this.localNodeAdapter = new ActorNodeAdapter(new NodeKey(configuration.getName(), localNode.getId()));
}