Examples of java.util.concurrent.atomic.AtomicBoolean.compareAndSet()

Class java.util.concurrent.atomic.AtomicBoolean

Examples of java.util.concurrent.atomic.AtomicBoolean.compareAndSet()

java.util.concurrent.atomic.AtomicBoolean.compareAndSet()
Atomically sets the value to the given updated value if the current value {@code ==} the expected value. @param expect the expected value @param update the new value @return {@code true} if successful. False return indicates thatthe actual value was not equal to the expected value.

                log.error("couldn't deliver OOB message " + msg, t);
            }
        }


        final AtomicBoolean processing=win.getProcessing();
        if(!processing.compareAndSet(false, true)) {
            return;
        }


        // try to remove (from the AckReceiverWindow) as many messages as possible as pass them up

View Full Code Here


        ReceiverEntry entry=recv_table.get(sender);
        Table<Message> win=entry != null? entry.received_msgs : null;
        if(win != null) {
            final AtomicBoolean processing=win.getProcessing();
            if(processing.compareAndSet(false, true)) {
                removeAndDeliver(processing, win, sender);
                sendAck(sender, win.getHighestDeliverable(), entry.recv_conn_id);
            }
        }
    }

View Full Code Here

        // Efficient way of checking whether another thread is already processing messages from 'sender'.
        // If that's the case, we return immediately and let the existing thread process our message
        // (https://jira.jboss.org/jira/browse/JGRP-829). Benefit: fewer threads blocked on the same lock, these threads
        // can be returned to the thread pool
        final AtomicBoolean processing=win.getProcessing();
        if(!processing.compareAndSet(false, true)) {
            return;
        }


        // Prevents concurrent passing up of messages by different threads (http://jira.jboss.com/jira/browse/JGRP-198);
        // this is all the more important once we have a threadless stack (http://jira.jboss.com/jira/browse/JGRP-181),

View Full Code Here

                return;
            }
        }


        final AtomicBoolean processing=win.getProcessing();
        if(!processing.compareAndSet(false, true)) {
            return;
        }


        // Try to remove (from the AckReceiverWindow) as many messages as possible as pass them up
        boolean released_processing=false;

View Full Code Here

    final Directory dir = newDirectory();
    final IndexWriter writer = new IndexWriter(dir,
        newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random())).setInfoStream(new InfoStream() {
        @Override
        public void message(String component, final String message) {
          if (message.startsWith("now flush at close") && thrown.compareAndSet(false, true)) {
            throw new OutOfMemoryError("fake OOME at " + message);
          }
        }


        @Override

View Full Code Here

                        LeaderLatch latch = new LeaderLatch(client, PATH_NAME);
                        try
                        {
                            latch.start();
                            Assert.assertTrue(latch.await(timing.forWaiting().seconds(), TimeUnit.SECONDS));
                            Assert.assertTrue(thereIsALeader.compareAndSet(false, true));
                            Thread.sleep((int)(10 * Math.random()));
                        }
                        finally
                        {
                            thereIsALeader.set(false);

View Full Code Here

                        {
                            InterProcessLock lock = makeLock(client);
                            lock.acquire();
                            try
                            {
                                if ( isFirst.compareAndSet(true, false) )
                                {
                                    timing.sleepABit();


                                    server.stop();
                                    Assert.assertTrue(timing.awaitLatch(latch));

View Full Code Here

                                semaphore.acquire();
                                mutex.acquire();
                                Assert.assertTrue(hasLock.compareAndSet(false, true));
                                try
                                {
                                    if ( isFirst.compareAndSet(true, false) )
                                    {
                                        semaphore.release(THREAD_QTY - 1);
                                        while ( semaphore.availablePermits() > 0 )
                                        {
                                            Thread.sleep(100);

View Full Code Here

                new Callable<Object>()
                {
                    @Override
                    public Object call() throws Exception
                    {
                        if ( firstTime.compareAndSet(true, false) )
                        {
                            try
                            {
                                client.getZooKeeper().create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
                            }

View Full Code Here

  boolean wasClosedHandlerCalled(HRegionInfo hri) {
    AtomicBoolean b = closedRegionHandlerCalled.get(hri);
    //compareAndSet to be sure that unit tests don't see stale values. Means,
    //we will return true exactly once unless the handler code resets to true
    //this value.
    return b == null ? false : b.compareAndSet(true, false);
  }


  //For unit tests only
  boolean wasOpenedHandlerCalled(HRegionInfo hri) {
    AtomicBoolean b = openedRegionHandlerCalled.get(hri);

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.