List of usage examples for java.util.concurrent.locks ReentrantReadWriteLock ReentrantReadWriteLock
public ReentrantReadWriteLock()
From source file:org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.QueueCapacities.java
public QueueCapacities(boolean isRoot) { ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); readLock = lock.readLock();//from w w w . ja v a 2 s .com writeLock = lock.writeLock(); capacitiesMap = new HashMap<String, Capacities>(); this.isRoot = isRoot; }
From source file:com.espertech.esper.multithread.TestMTIsolation.java
private void tryIsolated(int numThreads, int numLoops) throws Exception { Configuration config = SupportConfigFactory.getConfiguration(); config.getEngineDefaults().getViewResources().setShareViews(false); config.addEventType("SupportBean", SupportBean.class); EPServiceProvider engine = EPServiceProviderManager.getDefaultProvider(config); engine.initialize();//from w w w .j a va 2s . co m // execute ExecutorService threadPool = Executors.newFixedThreadPool(numThreads); Future future[] = new Future[numThreads]; ReentrantReadWriteLock sharedStartLock = new ReentrantReadWriteLock(); sharedStartLock.writeLock().lock(); for (int i = 0; i < numThreads; i++) { future[i] = threadPool.submit(new IsolateUnisolateCallable(i, engine, numLoops)); } Thread.sleep(100); sharedStartLock.writeLock().unlock(); threadPool.shutdown(); threadPool.awaitTermination(10, TimeUnit.SECONDS); for (int i = 0; i < numThreads; i++) { assertTrue((Boolean) future[i].get()); } }
From source file:org.alfresco.util.registry.NamedObjectRegistry.java
/** * Default constructor. The {@link #setStorageType(Class)} method must be called. *//*from w ww.ja v a 2 s . c o m*/ public NamedObjectRegistry() { ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); readLock = lock.readLock(); writeLock = lock.writeLock(); this.namePattern = null; // Deliberately null this.storageType = null; // Deliberately null this.objects = new HashMap<String, T>(13); }
From source file:org.alfresco.util.PathMapper.java
/** * Default constructor/*from w ww .ja v a 2s . co m*/ */ public PathMapper() { ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); readLock = lock.readLock(); writeLock = lock.writeLock(); pathMaps = new HashMap<String, Set<String>>(37); derivedPathMaps = new HashMap<String, Set<String>>(127); derivedPathMapsPartial = new HashMap<String, Set<String>>(127); }
From source file:com.espertech.esper.filter.FilterParamIndexCompare.java
public FilterParamIndexCompare(FilterSpecLookupable lookupable, FilterOperator filterOperator) { super(filterOperator, lookupable); constantsMap = new TreeMap<Object, EventEvaluator>(); constantsMapRWLock = new ReentrantReadWriteLock(); if ((filterOperator != FilterOperator.GREATER) && (filterOperator != FilterOperator.GREATER_OR_EQUAL) && (filterOperator != FilterOperator.LESS) && (filterOperator != FilterOperator.LESS_OR_EQUAL)) { throw new IllegalArgumentException("Invalid filter operator for index of " + filterOperator); }/*from www .j a v a 2 s . c o m*/ }
From source file:com.alibaba.zonda.logger.server.writer.OutputStreamManager.java
private OutputStreamManager(String baseDir) { this.lock = new ReentrantReadWriteLock(); this.baseDir = baseDir; this.osMap = new ConcurrentHashMap<String, LogOutputStream>(5); }
From source file:org.rhq.enterprise.server.util.concurrent.InventoryReportSerializer.java
public void lock(String agentName) { String msg = "tid=" + Thread.currentThread().getId() + "; agent=" + agentName; boolean debug = this.log.isDebugEnabled(); ReentrantReadWriteLock lock = null; logDebug(debug, msg, ": about to synchronize"); synchronized (this) { logDebug(debug, msg, ": synchronized"); lock = InventoryReportSerializer.locks.get(agentName); if (lock == null) { logDebug(debug, msg, ": creating new lock"); lock = new ReentrantReadWriteLock(); InventoryReportSerializer.locks.put(agentName, lock); }// w w w . ja v a 2 s . c o m } logDebug(debug, msg, ": acquiring write lock"); long start = System.currentTimeMillis(); lock.writeLock().lock(); long end = System.currentTimeMillis(); long duration = end - start; InventoryReportSerializer.lockTimes.put(agentName, Long.valueOf(end)); if (duration < 5000L) { logDebug(debug, msg, ": acquired write lock in millis=" + duration); } else { this.log.info(msg + ": acquired write lock in millis=" + duration); } return; }
From source file:org.apache.servicemix.jbi.cluster.engine.ClusterEndpointLoadTest.java
public void testLoadInOnly() throws Exception { createRoute(Transacted.Jms, true, false, true); final int nbThreads = 10; final int nbExchanges = 10; final ReadWriteLock lock = new ReentrantReadWriteLock(); final CountDownLatch latch = new CountDownLatch(nbThreads); final AtomicInteger id = new AtomicInteger(); lock.writeLock().lock();//from ww w. ja v a2 s . c om for (int i = 0; i < nbThreads; i++) { new Thread() { public void run() { Channel client = null; try { client = nmr1.createChannel(); lock.readLock().lock(); for (int i = 0; i < nbExchanges; i++) { Exchange exchange = client.createExchange(Pattern.InOnly); exchange.getIn() .setBody(new StringSource("<hello id='" + id.getAndIncrement() + "'/>")); exchange.setTarget(nmr1.getEndpointRegistry() .lookup(ServiceHelper.createMap(Endpoint.NAME, PROXY_ENDPOINT_NAME))); client.sendSync(exchange); assertEquals(Status.Done, exchange.getStatus()); } } catch (Exception e) { e.printStackTrace(); } finally { lock.readLock().unlock(); latch.countDown(); if (client != null) { client.close(); } } } }.start(); } long t0, t1; t0 = System.currentTimeMillis(); lock.writeLock().unlock(); latch.await(); receiver.assertExchangesReceived(nbThreads * nbExchanges, TIMEOUT); t1 = System.currentTimeMillis(); System.err.println("Elapsed time: " + (t1 - t0) + " ms"); System.err.println("Throuput: " + (nbThreads * nbExchanges * 1000 / (t1 - t0)) + " messages/sec"); }
From source file:org.rhq.enterprise.server.util.concurrent.AvailabilityReportSerializer.java
public void lock(String agentName) { String msg = "tid=" + Thread.currentThread().getId() + "; agent=" + agentName; boolean debug = this.log.isDebugEnabled(); ReentrantReadWriteLock lock = null; logDebug(debug, msg, ": about to synchronize"); synchronized (this) { logDebug(debug, msg, ": synchronized"); lock = AvailabilityReportSerializer.locks.get(agentName); if (lock == null) { logDebug(debug, msg, ": creating new lock"); lock = new ReentrantReadWriteLock(); AvailabilityReportSerializer.locks.put(agentName, lock); }//from ww w.j a v a2 s.c o m } logDebug(debug, msg, ": acquiring write lock"); long start = System.currentTimeMillis(); lock.writeLock().lock(); long end = System.currentTimeMillis(); long duration = end - start; AvailabilityReportSerializer.lockTimes.put(agentName, Long.valueOf(end)); if (duration < 5000L) { logDebug(debug, msg, ": acquired write lock in millis=" + duration); } else { this.log.info(msg + ": acquired write lock in millis=" + duration); } return; }
From source file:fm.last.moji.impl.MojiFileImpl.java
MojiFileImpl(String key, String domain, String storageClass, TrackerFactory trackerFactory,
HttpConnectionFactory httpFactory) {
this.key = key;
this.domain = domain;
this.storageClass = storageClass;
this.trackerFactory = trackerFactory;
this.httpFactory = httpFactory;
executor = new Executor(trackerFactory);
lock = new ReentrantReadWriteLock();
}