List of usage examples for java.util.concurrent.locks ReentrantLock ReentrantLock
public ReentrantLock()
From source file:org.apache.fop.fo.properties.PropertyCache.java
/** * Creates a new cache. The "org.apache.fop.fo.properties.use-cache" system * property is used to determine whether properties should actually be * cached or not. If not, then the {@link #fetch(Object)} method will simply * return its argument. To enable the cache, set this property to "true" * (case insensitive).// w w w. j av a 2 s.c om */ public PropertyCache() { boolean useCache; try { useCache = Boolean.valueOf(System.getProperty("org.apache.fop.fo.properties.use-cache", "true")) .booleanValue(); } catch (SecurityException e) { useCache = true; LOG.info("Unable to access org.apache.fop.fo.properties.use-cache" + " due to security restriction; defaulting to 'true'."); } if (useCache) { this.map = new ConcurrentHashMap<Integer, WeakReference<T>>(); this.putCounter = new AtomicInteger(); this.cleanupLock = new ReentrantLock(); this.hashCodeCollisionCounter = new AtomicInteger(); } else { this.map = null; this.putCounter = null; this.cleanupLock = null; this.hashCodeCollisionCounter = null; } this.useCache = useCache; }
From source file:example.pki.VaultPkiConfiguration.java
/** * Trivial local implementation suitable for our sample. The underlying {@link Lock} * should synchronize on a shared resource like Cluster Leader Election, a Redis Lock, * Zookeeper Lock, ...// w w w . j av a 2s .com * * @return */ @Bean public static SynchronizationProvider synchronizationProvider() { final Lock lock = new ReentrantLock(); return new SynchronizationProvider() { @Override public Lock getLock() { return lock; } }; }
From source file:org.wso2.carbon.mediation.initializer.AbstractServiceBusAdmin.java
protected Lock getLock() { Parameter p = getAxisConfig().getParameter(ServiceBusConstants.SYNAPSE_CONFIG_LOCK); if (p != null) { return (Lock) p.getValue(); } else {// ww w . j a v a 2 s . c o m log.warn(ServiceBusConstants.SYNAPSE_CONFIG_LOCK + " is null, Recreating a new lock"); Lock lock = new ReentrantLock(); try { getAxisConfig().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.magnet.mmx.server.plugin.mmxmgmt.wakeup.WakeupProcessorTest.java
@Test public void testWakeupProcess() { WakeupProcessor processor = new StubWakeupProcessor(new ReentrantLock()); processor.run();//from www. ja va2s. co m WakeupNotifier notifier = processor.getGCMWakeupNotifier(); int callCount = ((StubWakeupNotifier) notifier).callCount; assertEquals("Non matching call count", 4, callCount); WakeupEntityDAO dao = processor.getWakeupEntityDAO(); List<WakeupEntity> toProcess = dao.poll(10); assertTrue("We still have items to process which is not expected", toProcess.isEmpty()); }
From source file:nl.salp.warcraft4j.fileformat.dbc.DbcFile.java
/** * Create a new DBC file instance.//from w w w. ja v a2s.com * * @param filenameHash The hash of the DBC filename. * @param filename The name of the DBC file. * @param dataReaderSupplier Supplier for the data reader to be used for parsing the DBC file. * * @throws IllegalArgumentException When the name is invalid. */ public DbcFile(long filenameHash, String filename, Supplier<DataReader> dataReaderSupplier) throws IllegalArgumentException { if (dataReaderSupplier == null) { throw new IllegalArgumentException( format("Can't create a DbcFile instance for file %d (%s) without a data reader supplier.", filenameHash, filename)); } this.filenameHash = filenameHash; this.filename = filename; this.dataReaderSupplier = dataReaderSupplier; this.parseLock = new ReentrantLock(); }
From source file:org.apache.synapse.transport.nhttp.NhttpSharedOutputBuffer.java
@Deprecated public NhttpSharedOutputBuffer(final int buffersize, final IOControl ioctrl, final ByteBufferAllocator allocator) { super(buffersize, allocator); Args.notNull(ioctrl, "I/O content control"); this.ioctrl = ioctrl; this.lock = new ReentrantLock(); this.condition = this.lock.newCondition(); }
From source file:info.pancancer.arch3.worker.WorkerHeartbeat.java
@Override public void run() { Channel reportingChannel = null; try {// ww w .ja v a 2 s . c om try { reportingChannel = Utilities.setupExchange(settings, this.queueName); } catch (IOException | TimeoutException | AlreadyClosedException e) { LOG.error("Exception caught! Queue channel could not be opened, waiting. Exception is: " + e.getMessage(), e); // retry after a minute, do not die simply because the launcher is unavailable, it may come back Thread.sleep(Base.ONE_MINUTE_IN_MILLISECONDS); } } catch (InterruptedException e) { Thread.currentThread().interrupt(); LOG.info("Caught interrupt signal, heartbeat shutting down.", e); return; } LOG.info("starting heartbeat thread, will send heartbeat message ever " + secondsDelay + " seconds."); while (!Thread.interrupted()) { // byte[] stdOut = this.getMessageBody().getBytes(StandardCharsets.UTF_8); try { try { Status heartbeatStatus = new Status(); heartbeatStatus.setJobUuid(this.jobUuid); heartbeatStatus.setMessage("job is running; IP address: " + networkID); heartbeatStatus.setState(StatusState.RUNNING); heartbeatStatus.setType(Utilities.JOB_MESSAGE_TYPE); heartbeatStatus.setVmUuid(this.vmUuid); heartbeatStatus.setIpAddress(networkID); // String stdOut = this.statusSource.getStdOut(); Lock lock = new ReentrantLock(); lock.lock(); String stdOut = this.statusSource.getStdOut(stdoutSnipSize); String stdErr = this.statusSource.getStdErr(); lock.unlock(); heartbeatStatus.setStdout(stdOut); heartbeatStatus.setStderr(stdErr); String heartBeatMessage = heartbeatStatus.toJSON(); LOG.debug("Sending heartbeat message to " + queueName + ", with body: " + heartBeatMessage); reportingChannel.basicPublish(queueName, queueName, MessageProperties.PERSISTENT_TEXT_PLAIN, heartBeatMessage.getBytes(StandardCharsets.UTF_8)); reportingChannel.waitForConfirms(); Thread.sleep((long) (secondsDelay * MILLISECONDS_PER_SECOND)); } catch (IOException | AlreadyClosedException e) { LOG.error("IOException caught! Message may not have been published. Exception is: " + e.getMessage(), e); // retry after a minute, do not die simply because the launcher is unavailable, it may come back Thread.sleep(Base.ONE_MINUTE_IN_MILLISECONDS); } } catch (InterruptedException e) { LOG.info("Heartbeat shutting down."); if (reportingChannel.getConnection().isOpen()) { try { reportingChannel.getConnection().close(); } catch (IOException e1) { LOG.error("Error closing reportingChannel connection: " + e1.getMessage(), e1); } } if (reportingChannel.isOpen()) { try { reportingChannel.close(); } catch (IOException e1) { LOG.error("Error (IOException) closing reportingChannel: " + e1.getMessage(), e1); } catch (TimeoutException e1) { LOG.error("Error (TimeoutException) closing reportingChannel: " + e1.getMessage(), e1); } } LOG.debug("reporting channel open: " + reportingChannel.isOpen()); LOG.debug("reporting channel connection open: " + reportingChannel.getConnection().isOpen()); Thread.currentThread().interrupt(); } } }
From source file:JiraWebSession.java
public JiraWebSession(JiraClient client, String baseUrl) { this.client = client; this.baseUrl = baseUrl; this.secure = baseUrl.startsWith("https"); //$NON-NLS-1$ this.location = client.getLocation(); this.authenticationLock = new ReentrantLock(); }
From source file:org.apache.hadoop.net.unix.TestDomainSocketWatcher.java
@Test(timeout = 300000) public void testStress() throws Exception { final int SOCKET_NUM = 250; final ReentrantLock lock = new ReentrantLock(); final DomainSocketWatcher watcher = newDomainSocketWatcher(10000000); final ArrayList<DomainSocket[]> pairs = new ArrayList<DomainSocket[]>(); final AtomicInteger handled = new AtomicInteger(0); final Thread adderThread = new Thread(new Runnable() { @Override//from w w w . j a v a 2s. c o m public void run() { try { for (int i = 0; i < SOCKET_NUM; i++) { DomainSocket pair[] = DomainSocket.socketpair(); watcher.add(pair[1], new DomainSocketWatcher.Handler() { @Override public boolean handle(DomainSocket sock) { handled.incrementAndGet(); return true; } }); lock.lock(); try { pairs.add(pair); } finally { lock.unlock(); } } } catch (Throwable e) { LOG.error(e); throw new RuntimeException(e); } } }); final Thread removerThread = new Thread(new Runnable() { @Override public void run() { final Random random = new Random(); try { while (handled.get() != SOCKET_NUM) { lock.lock(); try { if (!pairs.isEmpty()) { int idx = random.nextInt(pairs.size()); DomainSocket pair[] = pairs.remove(idx); if (random.nextBoolean()) { pair[0].close(); } else { watcher.remove(pair[1]); } } } finally { lock.unlock(); } } } catch (Throwable e) { LOG.error(e); throw new RuntimeException(e); } } }); adderThread.start(); removerThread.start(); Uninterruptibles.joinUninterruptibly(adderThread); Uninterruptibles.joinUninterruptibly(removerThread); watcher.close(); }
From source file:org.gradle.process.internal.DefaultExecHandle.java
DefaultExecHandle(String displayName, File directory, String command, List<String> arguments,
Map<String, String> environment, OutputStream standardOutput, OutputStream errorOutput,
InputStream standardInput, List<ExecHandleListener> listeners) {
this.displayName = displayName;
this.directory = directory;
this.command = command;
this.arguments = arguments;
this.environment = environment;
this.standardOutput = standardOutput;
this.errorOutput = errorOutput;
this.standardInput = standardInput;
this.lock = new ReentrantLock();
this.stateChange = lock.newCondition();
this.state = ExecHandleState.INIT;
executor = new DefaultExecutorFactory().create(String.format("Run %s", displayName));
shutdownHookAction = new ExecHandleShutdownHookAction(this);
broadcast = new AsyncListenerBroadcast<ExecHandleListener>(ExecHandleListener.class, executor);
broadcast.addAll(listeners);/*www . j av a2 s . c o m*/
}