Examples of com.hazelcast.core.ILock

com.hazelcast.core.ILock
Distributed implementation of {@link Lock}. @see Lock


    @Test(timeout = 60000)
    public void testAwaitUntil_whenFail() throws InterruptedException {
        HazelcastInstance instance = createHazelcastInstance();


        final ILock lock = instance.getLock(randomString());
        final ICondition condition = lock.newCondition(randomString());


        lock.lock();


        Date date = new Date();
        date.setTime(System.currentTimeMillis() + 1000);
        assertFalse(condition.awaitUntil(date));
    }

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    @Test(timeout = 60000)
    public void testAwaitUntil_whenSuccess() throws InterruptedException {
        HazelcastInstance instance = createHazelcastInstance();


        final ILock lock = instance.getLock(randomString());
        final ICondition condition = lock.newCondition(randomString());
        final CountDownLatch latch = new CountDownLatch(1);


        new Thread(new Runnable() {
            @Override
            public void run() {
                lock.lock();
                try {
                    Date date = new Date();
                    date.setTime(System.currentTimeMillis() + 10000);
                    if (condition.awaitUntil(date)) {
                        latch.countDown();
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();


        sleepSeconds(1);
        lock.lock();
        condition.signal();
        lock.unlock();
    }

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    @Test(timeout = 60000)
    @Ignore
    public void testAwait_whenNegativeTimeout() throws InterruptedException {
        HazelcastInstance instance = createHazelcastInstance();


        final ILock lock = instance.getLock(randomString());
        final ICondition condition = lock.newCondition(randomString());


        lock.lock();


        assertFalse(condition.await(-1, TimeUnit.MILLISECONDS));
    }

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        final HazelcastInstance instance1 = nodeFactory.newHazelcastInstance();
        final HazelcastInstance instance2 = nodeFactory.newHazelcastInstance();
        final AtomicInteger signalCounter = new AtomicInteger(0);


        final String key = generateKeyOwnedBy(instance1);
        final ILock lock1 = instance1.getLock(key);
        final String conditionName = randomString();
        final ICondition condition1 = lock1.newCondition(conditionName);


        Thread t = new Thread(new Runnable() {
            public void run() {
                ILock lock = instance2.getLock(key);
                ICondition condition = lock.newCondition(conditionName);
                lock.lock();
                try {
                    condition.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } finally {
                    lock.unlock();
                }
                signalCounter.incrementAndGet();
            }
        });
        t.start();

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    @Test(timeout = 60000, expected = DistributedObjectDestroyedException.class)
    public void testDestroyLock_whenOtherWaitingOnConditionAwait() throws InterruptedException {
        final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
        final HazelcastInstance instance = nodeFactory.newHazelcastInstance();
        final ILock lock = instance.getLock(randomString());
        final ICondition condition = lock.newCondition("condition");
        final CountDownLatch latch = new CountDownLatch(1);


        new Thread(new Runnable() {
            public void run() {
                try {
                    latch.await(30, TimeUnit.SECONDS);
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                lock.destroy();
            }
        }).start();


        lock.lock();
        latch.countDown();
        condition.await();
        lock.unlock();
    }

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    public void testShutDownNode_whenOtherWaitingOnConditionAwait() throws InterruptedException {
        final TestHazelcastInstanceFactory nodeFactory = createHazelcastInstanceFactory(2);
        final HazelcastInstance instance = nodeFactory.newHazelcastInstance();
        nodeFactory.newHazelcastInstance();
        final String name = randomString();
        final ILock lock = instance.getLock(name);
        final ICondition condition = lock.newCondition("condition");
        final CountDownLatch latch = new CountDownLatch(1);


        new Thread(new Runnable() {
            public void run() {
                try {
                    latch.await(1, TimeUnit.MINUTES);
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                instance.shutdown();
            }
        }).start();


        lock.lock();
        try {
            latch.countDown();
            condition.await();
        } catch (InterruptedException e) {
        }
        lock.unlock();
    }

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        final HazelcastInstance keyOwner = nodeFactory.newHazelcastInstance();
        warmUpPartitions(instance, keyOwner);


        final String key = generateKeyOwnedBy(keyOwner);


        final ILock lock = instance.getLock(key);
        final ICondition condition = lock.newCondition(name);


        final CountDownLatch awaitLatch = new CountDownLatch(size);
        final CountDownLatch finalLatch = new CountDownLatch(size);
        for (int i = 0; i < size; i++) {
            new Thread(new Runnable() {
                public void run() {
                    lock.lock();
                    try {
                        awaitLatch.countDown();
                        condition.await();
                        if (lock.isLockedByCurrentThread()) {
                            count.incrementAndGet();
                        }
                    } catch (InterruptedException ignored) {
                    } finally {
                        lock.unlock();
                        finalLatch.countDown();
                    }


                }
            }).start();
        }


        ILock lock1 = keyOwner.getLock(key);
        ICondition condition1 = lock1.newCondition(name);
        awaitLatch.await(1, TimeUnit.MINUTES);
        lock1.lock();
        condition1.signalAll();
        lock1.unlock();
        keyOwner.shutdown();


        finalLatch.await(2, TimeUnit.MINUTES);
        assertEquals(size, count.get());
    }

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        ClientConfig clientConfig = new ClientConfig();
        clientConfig.getNetworkConfig().setRedoOperation(true);


        HazelcastInstance client = HazelcastClient.newHazelcastClient(clientConfig);
        final ILock lock = client.getLock("lock");


        for (int k = 0; k < 10; k++) {
            lock.lock();
            try {
                Thread.sleep(100);
            } finally {
                lock.unlock();
            }
        }


        lock.lock();
        hz1.shutdown();
        lock.unlock();
    }

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        for (int i = 0; i < tryCount; i++) {
            final HazelcastInstance instance = Hazelcast.newHazelcastInstance();
            final HazelcastInstance client = HazelcastClient.newHazelcastClient(clientConfig);


            final ILock lock = client.getLock("lock");
            assertTrue(lock.tryLock(1, TimeUnit.MINUTES));
            client.getLifecycleService().terminate(); //with client is dead, lock should be released.
            instance.getLifecycleService().terminate();
        }
    }

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com.hazelcast.concurrent.lock.LockTest

com.hazelcast.concurrent.lock.ProducerConsumerConditionStressTest

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