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

java.util.concurrent.locks.Lock.lockInterruptibly()
Acquires the lock unless the current thread is {@linkplain Thread#interrupt interrupted}.
Acquires the lock if it is available and returns immediately.
If the lock is not available then the current thread becomes disabled for thread scheduling purposes and lies dormant until one of two things happens:
- The lock is acquired by the current thread; or
- Some other thread {@linkplain Thread#interrupt interrupts} thecurrent thread, and interruption of lock acquisition is supported.
If the current thread:
- has its interrupted status set on entry to this method; or
- is {@linkplain Thread#interrupt interrupted} while acquiring thelock, and interruption of lock acquisition is supported,
then {@link InterruptedException} is thrown and the current thread'sinterrupted status is cleared.
Implementation Considerations
The ability to interrupt a lock acquisition in some implementations may not be possible, and if possible may be an expensive operation. The programmer should be aware that this may be the case. An implementation should document when this is the case.
An implementation can favor responding to an interrupt over normal method return.
A {@code Lock} implementation may be able to detecterroneous use of the lock, such as an invocation that would cause deadlock, and may throw an (unchecked) exception in such circumstances. The circumstances and the exception type must be documented by that {@code Lock} implementation. @throws InterruptedException if the current thread isinterrupted while acquiring the lock (and interruption of lock acquisition is supported)

            errorFuture = testService.submit(new Callable<Void>() {
                @Override
                public Void call() throws Exception {
                    Lock secondLock = new ReentrantZkLock2(baseLockPath, zkSessionManager);
                    logger.debug("interruptible acquiring lock");
                    secondLock.lockInterruptibly();
                    logger.debug("acquired");
                    try {
                        latch.countDown();
                    } finally {
                        secondLock.unlock();

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    @Test(timeout = 1000l)
    public void testLockInterruptiblyWorksSameInstance() throws Exception{
        final CountDownLatch latch = new CountDownLatch(1);
        final Lock firstLock = new ReentrantZkLock2(baseLockPath, zkSessionManager);
        firstLock.lockInterruptibly();
        Future<Void>errorFuture;
        try{
            errorFuture = testService.submit(new Callable<Void>() {
                @Override
                public Void call() throws Exception {

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        try{
            errorFuture = testService.submit(new Callable<Void>() {
                @Override
                public Void call() throws Exception {
//                    Lock secondLock = new ReentrantZkLock(baseLockPath, commandExecutor);
                    firstLock.lockInterruptibly();
                    try {
                        latch.countDown();
                    } finally {
                        firstLock.unlock();
                    }

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                    Lock secondaryLock = new ReentrantZkLock2(baseLockPath, zkSessionManager);
                    boolean thrown = false;
                    try {
                        System.out.printf("%s: Attempting to acquire the lock interruptibly%n",Thread.currentThread().getName());
                        latch.await();
                        secondaryLock.lockInterruptibly();
                        fail("secondary Lock was acquired improperly!");
                    } catch (InterruptedException ie) {
                        System.out.printf("%s: Secondary lock threw an InterruptedException$n",Thread.currentThread().getName());
                        thrown = true;
                    } catch (BrokenBarrierException e) {

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                    Lock secondaryLock = new ReentrantZkLock2(baseLockPath, zkSessionManager);
                    boolean thrown = false;
                    try {
                        System.out.printf("%s: Attempting to acquire the lock interruptibly%n",Thread.currentThread().getName());
                        latch.await();
                        secondaryLock.lockInterruptibly();
                        fail("secondary Lock was acquired improperly!");
                    } catch (InterruptedException ie) {
                        System.out.printf("%s: Secondary lock threw an InterruptedException$n",Thread.currentThread().getName());
                        thrown = true;
                    } catch (BrokenBarrierException e) {

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    }


    @Test(timeout = 1000l)
    public void testLockInterruptiblyReentrant() throws Exception{
        Lock lock = new ReentrantZkLock2(baseLockPath,zkSessionManager);
        lock.lockInterruptibly();
        try{
            //try to enter the lock again
            lock.lockInterruptibly();
            //success! we're gravy
            lock.unlock();

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    public void testLockInterruptiblyReentrant() throws Exception{
        Lock lock = new ReentrantZkLock2(baseLockPath,zkSessionManager);
        lock.lockInterruptibly();
        try{
            //try to enter the lock again
            lock.lockInterruptibly();
            //success! we're gravy
            lock.unlock();
        }finally{
            lock.unlock();
        }

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        readLock.lock();
        Future<Void> writeFuture = testService.submit(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                Lock writeLock = rwLock.writeLock();
                writeLock.lockInterruptibly();
                try{
                    return null;
                }finally {
                    writeLock.unlock();
                }

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        If this mechanism is broken, then this test will fail
        */
        final ReentrantZkReadWriteLock2 rwLock = new ReentrantZkReadWriteLock2(baseLockPath, zkSessionManager);
        Lock readLock = rwLock.readLock();


        readLock.lockInterruptibly();
        Future<Void> writeFuture = testService.submit(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                Lock writeLock = rwLock.writeLock();
                writeLock.lockInterruptibly();

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        readLock.lockInterruptibly();
        Future<Void> writeFuture = testService.submit(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                Lock writeLock = rwLock.writeLock();
                writeLock.lockInterruptibly();
                try{
                    return null;
                }finally {
                    writeLock.unlock();
                }

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