Examples of java.util.concurrent.locks.Lock.newCondition()

java.util.concurrent.locks.Lock.newCondition()

Returns a new {@link Condition} instance that is bound to this{@code Lock} instance.

Before waiting on the condition the lock must be held by the current thread. A call to {@link Condition#await()} will atomically release the lockbefore waiting and re-acquire the lock before the wait returns.

Implementation Considerations

The exact operation of the {@link Condition} instance depends onthe {@code Lock} implementation and must be documented by thatimplementation. @return A new {@link Condition} instance for this {@code Lock} instance @throws UnsupportedOperationException if this {@code Lock}implementation does not support conditions

    }


    @Test(timeout = 1500l)
    public void testConditionWaitsForSignalOtherClient() throws Exception{
        final Lock firstLock = new ReentrantZkLock(baseLockPath, zkSessionManager);
        final Condition firstCondition = firstLock.newCondition();


        firstLock.lock();
        //fire off a thread that will signal the main process thread
        Future<Void> errorFuture = testService.submit(new Callable<Void>() {
            @Override

            public Void call() throws Exception {
                final Lock otherClientLock;
                ZooKeeper newZk = newZooKeeper();
                try {
                    otherClientLock = new ReentrantZkLock(baseLockPath, new BaseZkSessionManager(newZk));
                    final Condition otherClientCondition = otherClientLock.newCondition();
                    otherClientLock.lock();
                    System.out.println("Lock acquired on second thread");
                    try {
                        otherClientCondition.signal();
                        System.out.println("Lock signalled on second thread");

    }


    @Test(timeout = 1000l)
    public void testConditionTimesOut() throws Exception{
        Lock firstLock = new ReentrantZkLock(baseLockPath,zkSessionManager);
        Condition firstCondition = firstLock.newCondition();


        firstLock.lock();
        boolean timedOut = firstCondition.await(250l, TimeUnit.MILLISECONDS);
        assertTrue("Condition did not time out!",!timedOut);
        firstLock.unlock();

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